diff --git a/openlp/core/display/canvas.py b/openlp/core/display/canvas.py
new file mode 100644
index 000000000..1264f2f37
--- /dev/null
+++ b/openlp/core/display/canvas.py
@@ -0,0 +1,769 @@
+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
+
+###############################################################################
+# OpenLP - Open Source Lyrics Projection #
+# --------------------------------------------------------------------------- #
+# Copyright (c) 2008-2017 OpenLP Developers #
+# --------------------------------------------------------------------------- #
+# This program is free software; you can redistribute it and/or modify it #
+# under the terms of the GNU General Public License as published by the Free #
+# Software Foundation; version 2 of the License. #
+# #
+# This program is distributed in the hope that it will be useful, but WITHOUT #
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
+# more details. #
+# #
+# You should have received a copy of the GNU General Public License along #
+# with this program; if not, write to the Free Software Foundation, Inc., 59 #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
+###############################################################################
+"""
+The :mod:`canvas` module provides the functionality to display screens and play multimedia within OpenLP.
+
+Some of the code for this form is based on the examples at:
+
+* `http://www.steveheffernan.com/html5-video-player/demo-video-player.html`_
+* `http://html5demos.com/two-videos`_
+"""
+import html
+import json
+import logging
+import os
+
+from PyQt5 import QtCore, QtWidgets, QtGui, QtMultimedia, QtWebChannel, QtWebEngineWidgets
+
+from openlp.core.common import is_macosx, is_win
+from openlp.core.common.applocation import AppLocation
+from openlp.core.common.i18n import translate
+from openlp.core.common.mixins import LogMixin, RegistryProperties
+from openlp.core.common.path import path_to_str
+from openlp.core.common.registry import Registry
+from openlp.core.common.settings import Settings
+from openlp.core.display.webengine import WebEngineView
+from openlp.core.display.window import MediaWatcher
+from openlp.core.display.screens import ScreenList
+from openlp.core.lib import ServiceItem, ImageSource, build_html, expand_tags, image_to_byte
+from openlp.core.lib.theme import BackgroundType
+from openlp.core.ui import HideMode, AlertLocation, DisplayControllerType
+
+if is_macosx():
+ from ctypes import pythonapi, c_void_p, c_char_p, py_object
+
+ from sip import voidptr
+ from objc import objc_object
+ from AppKit import NSMainMenuWindowLevel, NSWindowCollectionBehaviorManaged
+
+log = logging.getLogger(__name__)
+
+OPAQUE_STYLESHEET = """
+QWidget {
+ border: 0px;
+ margin: 0px;
+ padding: 0px;
+}
+QGraphicsView {}
+"""
+TRANSPARENT_STYLESHEET = """
+QWidget {
+ border: 0px;
+ margin: 0px;
+ padding: 0px;
+}
+QGraphicsView {
+ background: transparent;
+ border: 0px;
+}
+"""
+
+
+class Canvas(QtWidgets.QGraphicsView):
+ """
+ This is a general display screen class. Here the general display settings will done. It will be used as
+ specialized classes by Main Display and Preview display.
+ """
+ def __init__(self, parent):
+ """
+ Constructor
+ """
+ self.is_live = False
+ if hasattr(parent, 'is_live') and parent.is_live:
+ self.is_live = True
+ if self.is_live:
+ self.parent = lambda: parent
+ super(Canvas, self).__init__()
+ self.controller = parent
+ self.screen = {}
+
+ def setup(self):
+ """
+ Set up and build the screen base
+ """
+ self.setGeometry(self.screen['size'])
+ #self.web_view = QtWebKitWidgets.QWebView(self)
+ #self.web_view.setGeometry(0, 0, self.screen['size'].width(), self.screen['size'].height())
+ #self.web_view.settings().setAttribute(QtWebKit.QWebSettings.PluginsEnabled, True)
+ #palette = self.web_view.palette()
+ #palette.setBrush(QtGui.QPalette.Base, QtCore.Qt.transparent)
+ #self.web_view.page().setPalette(palette)
+ #self.web_view.setAttribute(QtCore.Qt.WA_OpaquePaintEvent, False)
+ #self.page = self.web_view.page()
+ #self.frame = self.page.mainFrame()
+ #if self.is_live and log.getEffectiveLevel() == logging.DEBUG:
+ # self.web_view.settings().setAttribute(QtWebKit.QWebSettings.DeveloperExtrasEnabled, True)
+
+
+ self.webview = WebEngineView(self)
+ self.webview.setGeometry(0, 0, self.screen['size'].width(), self.screen['size'].height())
+ self.webview.settings().setAttribute(QtWebEngineWidgets.QWebEngineSettings.PluginsEnabled, True)
+ self.layout = QtWidgets.QVBoxLayout(self)
+ self.layout.setContentsMargins(0, 0, 0, 0)
+ self.layout.addWidget(self.webview)
+ self.webview.loadFinished.connect(self.after_loaded)
+ self.set_url(QtCore.QUrl('file://' + os.getcwd() + '/display.html'))
+ self.media_watcher = MediaWatcher(self)
+ self.channel = QtWebChannel.QWebChannel(self)
+ self.channel.registerObject('mediaWatcher', self.media_watcher)
+ self.webview.page().setWebChannel(self.channel)
+ self.webview.loadFinished.connect(self.is_web_loaded)
+
+ self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
+ self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
+
+ def resizeEvent(self, event):
+ """
+ React to resizing of this display
+
+ :param event: The event to be handled
+ """
+ if hasattr(self, 'web_view'):
+ self.web_view.setGeometry(0, 0, self.width(), self.height())
+
+ def is_web_loaded(self, field=None):
+ """
+ Called by webView event to show display is fully loaded
+ """
+ self.web_loaded = True
+
+ def set_url(self, url):
+ """
+ Set the URL of the webview
+ """
+ if not isinstance(url, QtCore.QUrl):
+ url = QtCore.QUrl(url)
+ self.webview.setUrl(url)
+
+ def set_html(self, html):
+ """
+ Set the html
+ """
+ self.webview.setHtml(html)
+
+ def after_loaded(self, state):
+ """
+ Add stuff after page initialisation
+ """
+ self.run_javascript('Display.init();')
+
+ def add_script_source(self, fname, source):
+ """
+ Add a script of source code
+ """
+ js = QtWebEngineWidgets.QWebEngineScript()
+ js.setSourceCode(source)
+ js.setName(fname)
+ js.setWorldId(QtWebEngineWidgets.QWebEngineScript.MainWorld)
+ self.webview.page().scripts().insert(js)
+
+ def add_script(self, fname):
+ """
+ Add a script to the page
+ """
+ js_file = QtCore.QFile(fname)
+ if not js_file.open(QtCore.QIODevice.ReadOnly):
+ log.warning('Could not open %s: %s', fname, js_file.errorString())
+ return
+ self.add_script_source(os.path.basename(fname), str(bytes(js_file.readAll()), 'utf-8'))
+
+ def run_javascript(self, script, is_sync=False):
+ """
+ Run some Javascript in the WebView
+
+ :param script: The script to run, a string
+ :param is_sync: Run the script synchronously. Defaults to False
+ """
+ if not is_sync:
+ self.webview.page().runJavaScript(script)
+ else:
+ self.__script_done = False
+ self.__script_result = None
+
+ def handle_result(result):
+ """
+ Handle the result from the asynchronous call
+ """
+ self.__script_done = True
+ self.__script_result = result
+
+ self.webview.page().runJavaScript(script, handle_result)
+ while not self.__script_done:
+ # TODO: Figure out how to break out of a potentially infinite loop
+ QtWidgets.QApplication.instance().processEvents()
+ return self.__script_result
+
+
+class MainCanvas(OpenLPMixin, Canvas, RegistryProperties):
+ """
+ This is the display screen as a specialized class from the Display class
+ """
+ def __init__(self, parent):
+ """
+ Constructor
+ """
+ super(MainCanvas, self).__init__(parent)
+ self.screens = ScreenList()
+ self.rebuild_css = False
+ self.hide_mode = None
+ self.override = {}
+ self.retranslateUi()
+ self.media_object = None
+ if self.is_live:
+ self.audio_player = AudioPlayer(self)
+ else:
+ self.audio_player = None
+ self.first_time = True
+ self.web_loaded = True
+ self.setStyleSheet(OPAQUE_STYLESHEET)
+ window_flags = QtCore.Qt.FramelessWindowHint | QtCore.Qt.Tool | QtCore.Qt.WindowStaysOnTopHint
+ if Settings().value('advanced/x11 bypass wm'):
+ window_flags |= QtCore.Qt.X11BypassWindowManagerHint
+ # TODO: The following combination of window_flags works correctly
+ # on Mac OS X. For next OpenLP version we should test it on other
+ # platforms. For OpenLP 2.0 keep it only for OS X to not cause any
+ # regressions on other platforms.
+ if is_macosx():
+ window_flags = QtCore.Qt.FramelessWindowHint | QtCore.Qt.Window | QtCore.Qt.NoDropShadowWindowHint
+ self.setWindowFlags(window_flags)
+ self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
+ self.set_transparency(False)
+ if is_macosx():
+ if self.is_live:
+ # Get a pointer to the underlying NSView
+ try:
+ nsview_pointer = self.winId().ascapsule()
+ except:
+ nsview_pointer = voidptr(self.winId()).ascapsule()
+ # Set PyCapsule name so pyobjc will accept it
+ pythonapi.PyCapsule_SetName.restype = c_void_p
+ pythonapi.PyCapsule_SetName.argtypes = [py_object, c_char_p]
+ pythonapi.PyCapsule_SetName(nsview_pointer, c_char_p(b"objc.__object__"))
+ # Covert the NSView pointer into a pyobjc NSView object
+ self.pyobjc_nsview = objc_object(cobject=nsview_pointer)
+ # Set the window level so that the MainCanvas is above the menu bar and dock
+ self.pyobjc_nsview.window().setLevel_(NSMainMenuWindowLevel + 2)
+ # Set the collection behavior so the window is visible when Mission Control is activated
+ self.pyobjc_nsview.window().setCollectionBehavior_(NSWindowCollectionBehaviorManaged)
+ if self.screens.current['primary']:
+ # Connect focusWindowChanged signal so we can change the window level when the display is not in
+ # focus on the primary screen
+ self.application.focusWindowChanged.connect(self.change_window_level)
+ if self.is_live:
+ Registry().register_function('live_display_hide', self.hide_display)
+ Registry().register_function('live_display_show', self.show_display)
+ Registry().register_function('update_display_css', self.css_changed)
+ self.close_display = False
+
+ def closeEvent(self, event):
+ """
+ Catch the close event, and check that the close event is triggered by OpenLP closing the display.
+ On Windows this event can be triggered by pressing ALT+F4, which we want to ignore.
+
+ :param event: The triggered event
+ """
+ if self.close_display:
+ super().closeEvent(event)
+ else:
+ event.ignore()
+
+ def close(self):
+ """
+ Remove registered function on close.
+ """
+ if self.is_live:
+ if is_macosx():
+ # Block signals so signal we are disconnecting can't get called while we disconnect it
+ self.blockSignals(True)
+ if self.screens.current['primary']:
+ self.application.focusWindowChanged.disconnect()
+ self.blockSignals(False)
+ Registry().remove_function('live_display_hide', self.hide_display)
+ Registry().remove_function('live_display_show', self.show_display)
+ Registry().remove_function('update_display_css', self.css_changed)
+ self.close_display = True
+ super().close()
+
+ def set_transparency(self, enabled):
+ """
+ Set the transparency of the window
+
+ :param enabled: Is transparency enabled
+ """
+ if enabled:
+ self.setAutoFillBackground(False)
+ self.setStyleSheet(TRANSPARENT_STYLESHEET)
+ else:
+ self.setAttribute(QtCore.Qt.WA_NoSystemBackground, False)
+ self.setStyleSheet(OPAQUE_STYLESHEET)
+ self.setAttribute(QtCore.Qt.WA_TranslucentBackground, enabled)
+ self.repaint()
+
+ def css_changed(self):
+ """
+ We need to rebuild the CSS on the live display.
+ """
+ for plugin in self.plugin_manager.plugins:
+ plugin.refresh_css(self.frame)
+
+ def retranslateUi(self):
+ """
+ Setup the interface translation strings.
+ """
+ self.setWindowTitle(translate('OpenLP.MainCanvas', 'OpenLP Display'))
+
+ def setup(self):
+ """
+ Set up and build the output screen
+ """
+ self.log_debug('Start MainCanvas setup (live = {islive})'.format(islive=self.is_live))
+ self.screen = self.screens.current
+ self.setVisible(False)
+ Canvas.setup(self)
+ if self.is_live:
+ # Build the initial frame.
+ background_color = QtGui.QColor()
+ background_color.setNamedColor(Settings().value('core/logo background color'))
+ if not background_color.isValid():
+ background_color = QtCore.Qt.white
+ image_file = path_to_str(Settings().value('core/logo file'))
+ splash_image = QtGui.QImage(image_file)
+ self.initial_fame = QtGui.QImage(
+ self.screen['size'].width(),
+ self.screen['size'].height(),
+ QtGui.QImage.Format_ARGB32_Premultiplied)
+ painter_image = QtGui.QPainter()
+ painter_image.begin(self.initial_fame)
+ painter_image.fillRect(self.initial_fame.rect(), background_color)
+ painter_image.drawImage(
+ (self.screen['size'].width() - splash_image.width()) // 2,
+ (self.screen['size'].height() - splash_image.height()) // 2,
+ splash_image)
+ service_item = ServiceItem()
+ service_item.bg_image_bytes = image_to_byte(self.initial_fame)
+ self.webview.setHtml(build_html(service_item, self.screen, self.is_live, None,
+ plugins=self.plugin_manager.plugins))
+ self._hide_mouse()
+
+ def text(self, slide, animate=True):
+ """
+ Add the slide text from slideController
+
+ :param slide: The slide text to be displayed
+ :param animate: Perform transitions if applicable when setting the text
+ """
+ # Wait for the webview to update before displaying text.
+ while not self.web_loaded:
+ self.application.process_events()
+ self.setGeometry(self.screen['size'])
+ json_verses = json.dumps(slide)
+ print(json_verses)
+ self.run_javascript('Display.setTextSlides({verses});'.format(verses=json_verses))
+ #if animate:
+ # # NOTE: Verify this works with ''.format()
+ # _text = slide.replace('\\', '\\\\').replace('\"', '\\\"')
+ # self.frame.runJavaScript('show_text("{text}")'.format(text=_text))
+ #else:
+ # # This exists for https://bugs.launchpad.net/openlp/+bug/1016843
+ # # For unknown reasons if evaluateJavaScript is called
+ # # from the themewizard, then it causes a crash on
+ # # Windows if there are many items in the service to re-render.
+ # # Setting the div elements direct seems to solve the issue
+ # self.frame.findFirstElement("#lyricsmain").setInnerXml(slide)
+
+ def alert(self, text, location):
+ """
+ Display an alert.
+
+ :param text: The text to be displayed.
+ :param location: Where on the screen is the text to be displayed
+ """
+ # First we convert <>& marks to html variants, then apply
+ # formattingtags, finally we double all backslashes for JavaScript.
+ text_prepared = expand_tags(html.escape(text)).replace('\\', '\\\\').replace('\"', '\\\"')
+ if self.height() != self.screen['size'].height() or not self.isVisible():
+ shrink = True
+ js = 'show_alert("{text}", "{top}")'.format(text=text_prepared, top='top')
+ else:
+ shrink = False
+ js = 'show_alert("{text}", "")'.format(text=text_prepared)
+ height = self.run_javascript(js)
+ if shrink:
+ if text:
+ alert_height = int(height)
+ self.resize(self.width(), alert_height)
+ self.setVisible(True)
+ if location == AlertLocation.Middle:
+ self.move(self.screen['size'].left(), (self.screen['size'].height() - alert_height) // 2)
+ elif location == AlertLocation.Bottom:
+ self.move(self.screen['size'].left(), self.screen['size'].height() - alert_height)
+ else:
+ self.setVisible(False)
+ self.setGeometry(self.screen['size'])
+
+ def direct_image(self, path, background):
+ """
+ API for replacement backgrounds so Images are added directly to cache.
+
+ :param path: Path to Image
+ :param background: The background color
+ """
+ self.image_manager.add_image(path, ImageSource.ImagePlugin, background)
+ if not hasattr(self, 'service_item'):
+ return False
+ self.override['image'] = path
+ self.override['theme'] = path_to_str(self.service_item.theme_data.background_filename)
+ self.image(path)
+ # Update the preview frame.
+ if self.is_live:
+ self.live_controller.update_preview()
+ return True
+
+ def image(self, path):
+ """
+ Add an image as the background. The image has already been added to the
+ cache.
+
+ :param path: The path to the image to be displayed. **Note**, the path is only passed to identify the image.
+ If the image has changed it has to be re-added to the image manager.
+ """
+ image = self.image_manager.get_image_bytes(path, ImageSource.ImagePlugin)
+ self.controller.media_controller.media_reset(self.controller)
+ self.display_image(image)
+
+ def display_image(self, image):
+ """
+ Display an image, as is.
+
+ :param image: The image to be displayed
+ """
+ self.setGeometry(self.screen['size'])
+ #if image:
+ # self.set_im
+ # js = 'show_image("data:image/png;base64,{image}");'.format(image=image)
+ #else:
+ # js = 'show_image("");'
+ #self.frame.evaluateJavaScript(js)
+ if not image['file'].startswith('file://'):
+ image['file'] = 'file://' + image['file']
+ json_images = json.dumps(images)
+ self.run_javascript('Display.setImageSlides({images});'.format(images=json_images))
+
+
+ def reset_image(self):
+ """
+ Reset the background image to the service item image. Used after the image plugin has changed the background.
+ """
+ if hasattr(self, 'service_item'):
+ self.display_image(self.service_item.bg_image_bytes)
+ else:
+ self.display_image(None)
+ # Update the preview frame.
+ if self.is_live:
+ self.live_controller.update_preview()
+ # clear the cache
+ self.override = {}
+
+ def preview(self):
+ """
+ Generates a preview of the image displayed.
+ """
+ was_visible = self.isVisible()
+ self.application.process_events()
+ # We must have a service item to preview.
+ if self.is_live and hasattr(self, 'service_item'):
+ # Wait for the fade to finish before geting the preview.
+ # Important otherwise preview will have incorrect text if at all!
+ if self.service_item.theme_data and self.service_item.theme_data.display_slide_transition:
+ while not self.run_javascript('show_text_completed()'):
+ self.application.process_events()
+ # Wait for the webview to update before getting the preview.
+ # Important otherwise first preview will miss the background !
+ while not self.web_loaded:
+ self.application.process_events()
+ # if was hidden keep it hidden
+ if self.is_live:
+ if self.hide_mode:
+ self.hide_display(self.hide_mode)
+ # Only continue if the visibility wasn't changed during method call.
+ elif was_visible == self.isVisible():
+ # Single screen active
+ if self.screens.display_count == 1:
+ # Only make visible if setting enabled.
+ if Settings().value('core/display on monitor'):
+ self.setVisible(True)
+ else:
+ self.setVisible(True)
+ return self.grab()
+
+ def build_html(self, service_item, image_path=''):
+ """
+ Store the service_item and build the new HTML from it. Add the HTML to the display
+
+ :param service_item: The Service item to be used
+ :param image_path: Where the image resides.
+ """
+ self.web_loaded = False
+ self.initial_fame = None
+ self.service_item = service_item
+ background = None
+ # We have an image override so keep the image till the theme changes.
+ if self.override:
+ # We have an video override so allow it to be stopped.
+ if 'video' in self.override:
+ Registry().execute('video_background_replaced')
+ self.override = {}
+ # We have a different theme.
+ elif self.override['theme'] != path_to_str(service_item.theme_data.background_filename):
+ Registry().execute('live_theme_changed')
+ self.override = {}
+ else:
+ # replace the background
+ background = self.image_manager.get_image_bytes(self.override['image'], ImageSource.ImagePlugin)
+ self.set_transparency(self.service_item.theme_data.background_type ==
+ BackgroundType.to_string(BackgroundType.Transparent))
+ image_bytes = None
+ if self.service_item.theme_data.background_type == 'image':
+ if self.service_item.theme_data.background_filename:
+ self.service_item.bg_image_bytes = self.image_manager.get_image_bytes(
+ path_to_str(self.service_item.theme_data.background_filename), ImageSource.Theme)
+ if image_path:
+ image_bytes = self.image_manager.get_image_bytes(image_path, ImageSource.ImagePlugin)
+ created_html = build_html(self.service_item, self.screen, self.is_live, background, image_bytes,
+ plugins=self.plugin_manager.plugins)
+ self.webview.setHtml(created_html)
+ if service_item.foot_text:
+ self.footer(service_item.foot_text)
+ # if was hidden keep it hidden
+ if self.hide_mode and self.is_live and not service_item.is_media():
+ if Settings().value('core/auto unblank'):
+ Registry().execute('slidecontroller_live_unblank')
+ else:
+ self.hide_display(self.hide_mode)
+ if self.service_item.theme_data.background_type == 'video' and self.is_live:
+ if self.service_item.theme_data.background_filename:
+ service_item = ServiceItem()
+ service_item.title = 'webkit'
+ service_item.processor = 'webkit'
+ path = os.path.join(str(AppLocation.get_section_data_path('themes')),
+ self.service_item.theme_data.theme_name)
+ service_item.add_from_command(path,
+ path_to_str(self.service_item.theme_data.background_filename),
+ ':/media/slidecontroller_multimedia.png')
+ self.media_controller.video(DisplayControllerType.Live, service_item, video_behind_text=True)
+ self._hide_mouse()
+
+ def footer(self, text):
+ """
+ Display the Footer
+
+ :param text: footer text to be displayed
+ """
+ js = 'show_footer(\'' + text.replace('\\', '\\\\').replace('\'', '\\\'') + '\')'
+ self.run_javascript(js)
+
+ def hide_display(self, mode=HideMode.Screen):
+ """
+ Hide the display by making all layers transparent Store the images so they can be replaced when required
+
+ :param mode: How the screen is to be hidden
+ """
+ self.log_debug('hide_display mode = {mode:d}'.format(mode=mode))
+ if self.screens.display_count == 1:
+ # Only make visible if setting enabled.
+ if not Settings().value('core/display on monitor'):
+ return
+ if mode == HideMode.Screen:
+ self.run_javascript('show_blank("desktop");')
+ self.setVisible(False)
+ elif mode == HideMode.Blank or self.initial_fame:
+ self.run_javascript('show_blank("black");')
+ else:
+ self.run_javascript('show_blank("theme");')
+ if mode != HideMode.Screen:
+ if self.isHidden():
+ self.setVisible(True)
+ self.webview.setVisible(True)
+ self.hide_mode = mode
+
+ def show_display(self):
+ """
+ Show the stored layers so the screen reappears as it was originally.
+ Make the stored images None to release memory.
+ """
+ if self.screens.display_count == 1:
+ # Only make visible if setting enabled.
+ if not Settings().value('core/display on monitor'):
+ return
+ self.run_javascript('show_blank("show");')
+ # Check if setting for hiding logo on startup is enabled.
+ # If it is, display should remain hidden, otherwise logo is shown. (from def setup)
+ if self.isHidden() and not Settings().value('core/logo hide on startup'):
+ self.setVisible(True)
+ self.hide_mode = None
+ # Trigger actions when display is active again.
+ if self.is_live:
+ Registry().execute('live_display_active')
+
+ def _hide_mouse(self):
+ """
+ Hide mouse cursor when moved over display.
+ """
+ if Settings().value('advanced/hide mouse'):
+ self.setCursor(QtCore.Qt.BlankCursor)
+ self.run_javascript('document.body.style.cursor = "none"')
+ else:
+ self.setCursor(QtCore.Qt.ArrowCursor)
+ self.run_javascript('document.body.style.cursor = "auto"')
+
+ def change_window_level(self, window):
+ """
+ Changes the display window level on Mac OS X so that the main window can be brought into focus but still allow
+ the main display to be above the menu bar and dock when it in focus.
+
+ :param window: Window from our application that focus changed to or None if outside our application
+ """
+ if is_macosx():
+ if window:
+ # Get different window ids' as int's
+ try:
+ window_id = window.winId().__int__()
+ main_window_id = self.main_window.winId().__int__()
+ self_id = self.winId().__int__()
+ except:
+ return
+ # If the passed window has the same id as our window make sure the display has the proper level and
+ # collection behavior.
+ if window_id == self_id:
+ self.pyobjc_nsview.window().setLevel_(NSMainMenuWindowLevel + 2)
+ self.pyobjc_nsview.window().setCollectionBehavior_(NSWindowCollectionBehaviorManaged)
+ # Else set the displays window level back to normal since we are trying to focus a window other than
+ # the display.
+ else:
+ self.pyobjc_nsview.window().setLevel_(0)
+ self.pyobjc_nsview.window().setCollectionBehavior_(NSWindowCollectionBehaviorManaged)
+ # If we are trying to focus the main window raise it now to complete the focus change.
+ if window_id == main_window_id:
+ self.main_window.raise_()
+
+
+class AudioPlayer(LogMixin, QtCore.QObject):
+ """
+ This Class will play audio only allowing components to work with a soundtrack independent of the user interface.
+ """
+ position_changed = QtCore.pyqtSignal(int)
+
+ def __init__(self, parent):
+ """
+ The constructor for the display form.
+
+ :param parent: The parent widget.
+ """
+ super(AudioPlayer, self).__init__(parent)
+ self.player = QtMultimedia.QMediaPlayer()
+ self.playlist = QtMultimedia.QMediaPlaylist(self.player)
+ self.volume_slider = None
+ self.player.setPlaylist(self.playlist)
+ self.player.positionChanged.connect(self._on_position_changed)
+
+ def __del__(self):
+ """
+ Shutting down so clean up connections
+ """
+ self.stop()
+
+ def _on_position_changed(self, position):
+ """
+ Emit a signal when the position of the media player updates
+ """
+ self.position_changed.emit(position)
+
+ def set_volume_slider(self, slider):
+ """
+ Connect the volume slider to the media player
+ :param slider:
+ """
+ self.volume_slider = slider
+ self.volume_slider.setMinimum(0)
+ self.volume_slider.setMaximum(100)
+ self.volume_slider.setValue(self.player.volume())
+ self.volume_slider.valueChanged.connect(self.set_volume)
+
+ def set_volume(self, volume):
+ """
+ Set the volume of the media player
+
+ :param volume:
+ """
+ self.player.setVolume(volume)
+
+ def reset(self):
+ """
+ Reset the audio player, clearing the playlist and the queue.
+ """
+ self.stop()
+ self.playlist.clear()
+
+ def play(self):
+ """
+ We want to play the file so start it
+ """
+ self.player.play()
+
+ def pause(self):
+ """
+ Pause the Audio
+ """
+ self.player.pause()
+
+ def stop(self):
+ """
+ Stop the Audio and clean up
+ """
+ self.player.stop()
+
+ def add_to_playlist(self, file_names):
+ """
+ Add another file to the playlist.
+
+ :param file_names: A list with files to be added to the playlist.
+ """
+ if not isinstance(file_names, list):
+ file_names = [file_names]
+ for file_name in file_names:
+ self.playlist.addMedia(QtMultimedia.QMediaContent(QtCore.QUrl.fromLocalFile(str(file_name))))
+
+ def next(self):
+ """
+ Skip forward to the next track in the list
+ """
+ self.playlist.next()
+
+ def go_to(self, index):
+ """
+ Go to a particular track in the list
+
+ :param index: The track to go to
+ """
+ self.playlist.setCurrentIndex(index)
+ if self.player.state() == QtMultimedia.QMediaPlayer.PlayingState:
+ self.player.play()
diff --git a/openlp/core/display/html/black.css b/openlp/core/display/html/black.css
new file mode 100644
index 000000000..96e4fd480
--- /dev/null
+++ b/openlp/core/display/html/black.css
@@ -0,0 +1,292 @@
+/**
+ * Black theme for reveal.js. This is the opposite of the 'white' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+@import url(../../lib/font/source-sans-pro/source-sans-pro.css);
+section.has-light-background, section.has-light-background h1, section.has-light-background h2, section.has-light-background h3, section.has-light-background h4, section.has-light-background h5, section.has-light-background h6 {
+ color: #222; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+body {
+ background: #222;
+ background-color: #222; }
+
+.reveal {
+ font-family: "Source Sans Pro", Helvetica, sans-serif;
+ font-size: 42px;
+ font-weight: normal;
+ color: #fff; }
+
+::selection {
+ color: #fff;
+ background: #bee4fd;
+ text-shadow: none; }
+
+::-moz-selection {
+ color: #fff;
+ background: #bee4fd;
+ text-shadow: none; }
+
+.reveal .slides > section,
+.reveal .slides > section > section {
+ line-height: 1.3;
+ font-weight: inherit; }
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+ margin: 0 0 20px 0;
+ color: #fff;
+ font-family: "Source Sans Pro", Helvetica, sans-serif;
+ font-weight: 600;
+ line-height: 1.2;
+ letter-spacing: normal;
+ text-transform: uppercase;
+ text-shadow: none;
+ word-wrap: break-word; }
+
+.reveal h1 {
+ font-size: 2.5em; }
+
+.reveal h2 {
+ font-size: 1.6em; }
+
+.reveal h3 {
+ font-size: 1.3em; }
+
+.reveal h4 {
+ font-size: 1em; }
+
+.reveal h1 {
+ text-shadow: none; }
+
+/*********************************************
+ * OTHER
+ *********************************************/
+.reveal p {
+ margin: 20px 0;
+ line-height: 1.3; }
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+ max-width: 95%;
+ max-height: 95%; }
+
+.reveal strong,
+.reveal b {
+ font-weight: bold; }
+
+.reveal em {
+ font-style: italic; }
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+ display: inline-block;
+ text-align: left;
+ margin: 0 0 0 1em; }
+
+.reveal ol {
+ list-style-type: decimal; }
+
+.reveal ul {
+ list-style-type: disc; }
+
+.reveal ul ul {
+ list-style-type: square; }
+
+.reveal ul ul ul {
+ list-style-type: circle; }
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+ display: block;
+ margin-left: 40px; }
+
+.reveal dt {
+ font-weight: bold; }
+
+.reveal dd {
+ margin-left: 40px; }
+
+.reveal q,
+.reveal blockquote {
+ quotes: none; }
+
+.reveal blockquote {
+ display: block;
+ position: relative;
+ width: 70%;
+ margin: 20px auto;
+ padding: 5px;
+ font-style: italic;
+ background: rgba(255, 255, 255, 0.05);
+ box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.2); }
+
+.reveal blockquote p:first-child,
+.reveal blockquote p:last-child {
+ display: inline-block; }
+
+.reveal q {
+ font-style: italic; }
+
+.reveal pre {
+ display: block;
+ position: relative;
+ width: 90%;
+ margin: 20px auto;
+ text-align: left;
+ font-size: 0.55em;
+ font-family: monospace;
+ line-height: 1.2em;
+ word-wrap: break-word;
+ box-shadow: 0px 0px 6px rgba(0, 0, 0, 0.3); }
+
+.reveal code {
+ font-family: monospace; }
+
+.reveal pre code {
+ display: block;
+ padding: 5px;
+ overflow: auto;
+ max-height: 400px;
+ word-wrap: normal; }
+
+.reveal table {
+ margin: auto;
+ border-collapse: collapse;
+ border-spacing: 0; }
+
+.reveal table th {
+ font-weight: bold; }
+
+.reveal table th,
+.reveal table td {
+ text-align: left;
+ padding: 0.2em 0.5em 0.2em 0.5em;
+ border-bottom: 1px solid; }
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+ text-align: center; }
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+ text-align: right; }
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+ border-bottom: none; }
+
+.reveal sup {
+ vertical-align: super; }
+
+.reveal sub {
+ vertical-align: sub; }
+
+.reveal small {
+ display: inline-block;
+ font-size: 0.6em;
+ line-height: 1.2em;
+ vertical-align: top; }
+
+.reveal small * {
+ vertical-align: top; }
+
+/*********************************************
+ * LINKS
+ *********************************************/
+.reveal a {
+ color: #42affa;
+ text-decoration: none;
+ -webkit-transition: color .15s ease;
+ -moz-transition: color .15s ease;
+ transition: color .15s ease; }
+
+.reveal a:hover {
+ color: #8dcffc;
+ text-shadow: none;
+ border: none; }
+
+.reveal .roll span:after {
+ color: #fff;
+ background: #068de9; }
+
+/*********************************************
+ * IMAGES
+ *********************************************/
+.reveal section img {
+ margin: 15px 0px;
+ background: rgba(255, 255, 255, 0.12);
+ border: 4px solid #fff;
+ box-shadow: 0 0 10px rgba(0, 0, 0, 0.15); }
+
+.reveal section img.plain {
+ border: 0;
+ box-shadow: none; }
+
+.reveal a img {
+ -webkit-transition: all .15s linear;
+ -moz-transition: all .15s linear;
+ transition: all .15s linear; }
+
+.reveal a:hover img {
+ background: rgba(255, 255, 255, 0.2);
+ border-color: #42affa;
+ box-shadow: 0 0 20px rgba(0, 0, 0, 0.55); }
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+.reveal .controls .navigate-left,
+.reveal .controls .navigate-left.enabled {
+ border-right-color: #42affa; }
+
+.reveal .controls .navigate-right,
+.reveal .controls .navigate-right.enabled {
+ border-left-color: #42affa; }
+
+.reveal .controls .navigate-up,
+.reveal .controls .navigate-up.enabled {
+ border-bottom-color: #42affa; }
+
+.reveal .controls .navigate-down,
+.reveal .controls .navigate-down.enabled {
+ border-top-color: #42affa; }
+
+.reveal .controls .navigate-left.enabled:hover {
+ border-right-color: #8dcffc; }
+
+.reveal .controls .navigate-right.enabled:hover {
+ border-left-color: #8dcffc; }
+
+.reveal .controls .navigate-up.enabled:hover {
+ border-bottom-color: #8dcffc; }
+
+.reveal .controls .navigate-down.enabled:hover {
+ border-top-color: #8dcffc; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+ background: rgba(0, 0, 0, 0.2); }
+
+.reveal .progress span {
+ background: #42affa;
+ -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+ -moz-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+ transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
diff --git a/openlp/core/display/html/display.html b/openlp/core/display/html/display.html
new file mode 100644
index 000000000..8c05e434c
--- /dev/null
+++ b/openlp/core/display/html/display.html
@@ -0,0 +1,25 @@
+
+
+
+ Display Window
+
+
+
+
+
+
+
+
+
+
diff --git a/openlp/core/display/html/display.js b/openlp/core/display/html/display.js
new file mode 100644
index 000000000..4c85c5b70
--- /dev/null
+++ b/openlp/core/display/html/display.js
@@ -0,0 +1,629 @@
+/**
+ * display.js is the main Javascript file that is used to drive the display.
+ */
+/**
+ * Background type enumeration
+ */
+var BackgroundType = {
+ Transparent: "transparent",
+ Solid: "solid",
+ Gradient: "gradient",
+ Video: "video",
+ Image: "image"
+};
+/**
+ * Gradient type enumeration
+ */
+var GradientType = {
+ Horizontal: "horizontal",
+ LeftTop: "leftTop",
+ LeftBottom: "leftBottom",
+ Vertical: "vertical",
+ Circular: "circular"
+};
+/**
+ * Horizontal alignment enumeration
+ */
+var HorizontalAlign = {
+ Left: "left",
+ Right: "right",
+ Center: "center",
+ Justify: "justify"
+};
+/**
+ * Vertical alignment enumeration
+ */
+var VerticalAlign = {
+ Top: "top",
+ Middle: "middle",
+ Bottom: "bottom"
+};
+/**
+ * Audio state enumeration
+ */
+var AudioState = {
+ Playing: "playing",
+ Paused: "paused",
+ Stopped: "stopped"
+};
+/**
+ * Return an array of elements based on the selector query
+ * @param {string} selector - The selector to find elements
+ * @returns {array} An array of matching elements
+ */
+function $(selector) {
+ return Array.from(document.querySelectorAll(selector));
+}
+/**
+ * Build linear gradient CSS
+ * @private
+ * @param {string} startDir - Starting direction
+ * @param {string} endDir - Ending direction
+ * @param {string} startColor - The starting color
+ * @param {string} endColor - The ending color
+ * @returns {string} A string of the gradient CSS
+ */
+function _buildLinearGradient(startDir, endDir, startColor, endColor) {
+ return "-webkit-gradient(linear, " + startDir + ", " + endDir + ", from(" + startColor + "), to(" + endColor + ")) fixed";
+}
+/**
+ * Build radial gradient CSS
+ * @private
+ * @param {string} width - Width of the gradient
+ * @param {string} startColor - The starting color
+ * @param {string} endColor - The ending color
+ * @returns {string} A string of the gradient CSS
+ */
+function _buildRadialGradient(width, startColor, endColor) {
+ return "-webkit-gradient(radial, " + width + " 50%, 100, " + width + " 50%, " + width + ", from(" + startColor + "), to(" + endColor + ")) fixed";
+}
+/**
+ * Get a style value from an element (computed or manual)
+ * @private
+ * @param {Object} element - The element whose style we want
+ * @param {string} style - The name of the style we want
+ * @returns {(Number|string)} The style value (type depends on the style)
+ */
+function _getStyle(element, style) {
+ return document.defaultView.getComputedStyle(element).getPropertyValue(style);
+}
+/**
+ * Convert newlines to
tags
+ * @private
+ * @param {string} text - The text to parse
+ * @returns {string} The text now with
tags
+ */
+function _nl2br(text) {
+ return text.replace("\r\n", "\n").replace("\n", "
");
+}
+/**
+ * Prepare text by creating paragraphs and calling _nl2br to convert newlines to
tags
+ * @private
+ * @param {string} text - The text to parse
+ * @returns {string} The text now with and
tags
+ */
+function _prepareText(text) {
+ return "
" + _nl2br(text) + "
";
+}
+// An audio player with a play list
+var AudioPlayer = function (audioElement) {
+ this._audioElement = null;
+ this._eventListeners = {};
+ this._playlist = [];
+ this._currentTrack = null;
+ this._canRepeat = false;
+ this._state = AudioState.Stopped;
+ this.createAudioElement();
+};
+AudioPlayer.prototype._callListener = function (event) {
+ if (this._eventListeners.hasOwnProperty(event.type)) {
+ this._eventListeners[event.type].forEach(function (listener) {
+ listener(event);
+ });
+ }
+ else {
+ console.warn("Received unknown event \"" + event.type + "\", doing nothing.");
+ }
+};
+AudioPlayer.prototype.createAudioElement = function () {
+ this._audioElement = document.createElement("audio");
+ this._audioElement.addEventListener("ended", this.onEnded);
+ this._audioElement.addEventListener("ended", this._callListener);
+ this._audioElement.addEventListener("timeupdate", this._callListener);
+ this._audioElement.addEventListener("volumechange", this._callListener);
+ this._audioElement.addEventListener("durationchange", this._callListener);
+ this._audioElement.addEventListener("loadeddata", this._callListener);
+ document.addEventListener("complete", function(event) {
+ document.body.appendChild(this._audioElement);
+ });
+};
+AudioPlayer.prototype.addEventListener = function (eventType, listener) {
+ this._eventListeners[eventType] = this._eventListeners[eventType] || [];
+ this._eventListeners[eventType].push(listener);
+};
+AudioPlayer.prototype.onEnded = function (event) {
+ this.nextTrack();
+};
+AudioPlayer.prototype.setCanRepeat = function (canRepeat) {
+ this._canRepeat = canRepeat;
+};
+AudioPlayer.prototype.clearTracks = function () {
+ this._playlist = [];
+};
+AudioPlayer.prototype.addTrack = function (track) {
+ this._playlist.push(track);
+};
+AudioPlayer.prototype.nextTrack = function () {
+ if (!!this._currentTrack) {
+ var trackIndex = this._playlist.indexOf(this._currentTrack);
+ if ((trackIndex + 1 >= this._playlist.length) && this._canRepeat) {
+ this.play(this._playlist[0]);
+ }
+ else if (trackIndex + 1 < this._playlist.length) {
+ this.play(this._playlist[trackIndex + 1]);
+ }
+ else {
+ this.stop();
+ }
+ }
+ else if (this._playlist.length > 0) {
+ this.play(this._playlist[0]);
+ }
+ else {
+ console.warn("No tracks in playlist, doing nothing.");
+ }
+};
+AudioPlayer.prototype.play = function () {
+ if (arguments.length > 0) {
+ this._currentTrack = arguments[0];
+ this._audioElement.src = this._currentTrack;
+ this._audioElement.play();
+ this._state = AudioState.Playing;
+ }
+ else if (this._state == AudioState.Paused) {
+ this._audioElement.play();
+ this._state = AudioState.Playing;
+ }
+ else {
+ console.warn("No track currently paused and no track specified, doing nothing.");
+ }
+};
+AudioPlayer.prototype.pause = function () {
+ this._audioElement.pause();
+ this._state = AudioState.Paused;
+};
+AudioPlayer.prototype.stop = function () {
+ this._audioElement.pause();
+ this._audioElement.src = "";
+ this._state = AudioState.Stopped;
+};
+/**
+ * The Display object is what we use from OpenLP
+ */
+var Display = {
+ _slides: {},
+ _revealConfig: {
+ margin: 0.0,
+ minScale: 1.0,
+ maxScale: 1.0,
+ controls: false,
+ progress: false,
+ history: false,
+ overview: false,
+ center: false,
+ help: false,
+ transition: "slide",
+ backgroundTransition: "fade",
+ viewDistance: 9999,
+ width: "100%",
+ height: "100%"
+ },
+ /**
+ * Start up reveal and do any other initialisation
+ */
+ init: function () {
+ Reveal.initialize(this._revealConfig);
+ },
+ /**
+ * Reinitialise Reveal
+ */
+ reinit: function () {
+ Reveal.reinitialize();
+ },
+ /**
+ * Set the transition type
+ * @param {string} transitionType - Can be one of "none", "fade", "slide", "convex", "concave", "zoom"
+ */
+ setTransition: function (transitionType) {
+ Reveal.configure({"transition": transitionType});
+ },
+ /**
+ * Clear the current list of slides
+ */
+ clearSlides: function () {
+ $(".slides")[0].innerHTML = "";
+ this._slides = {};
+ },
+ /**
+ * Add a slides. If the slide exists but the HTML is different, update the slide.
+ * @param {string} verse - The verse number, e.g. "v1"
+ * @param {string} html - The HTML for the verse, e.g. "line1
line2"
+ * @param {bool} [reinit=true] - Re-initialize Reveal. Defaults to true.
+ */
+ addTextSlide: function (verse, text) {
+ var html = _prepareText(text);
+ if (this._slides.hasOwnProperty(verse)) {
+ var slide = $("#" + verse)[0];
+ if (slide.innerHTML != html) {
+ slide.innerHTML = html;
+ }
+ }
+ else {
+ var slidesDiv = $(".slides")[0];
+ var slide = document.createElement("section");
+ slide.setAttribute("id", verse);
+ slide.innerHTML = html;
+ slidesDiv.appendChild(slide);
+ var slides = $(".slides > section");
+ this._slides[verse] = slides.length - 1;
+ }
+ if ((arguments.length > 2) && (arguments[2] === true)) {
+ this.reinit();
+ }
+ else if (arguments.length == 2) {
+ this.reinit();
+ }
+ },
+ /**
+ * Set text slides.
+ * @param {Object[]} slides - A list of slides to add as JS objects: {"verse": "v1", "html": "line 1
line2"}
+ */
+ setTextSlides: function (slides) {
+ Display.clearSlides();
+ slides.forEach(function (slide) {
+ Display.addTextSlide(slide.verse, slide.text, false);
+ });
+ this.reinit();
+ },
+ /**
+ * Set image slides
+ * @param {Object[]} slides - A list of images to add as JS objects [{"file": "url/to/file"}]
+ */
+ setImageSlides: function (slides) {
+ var $this = this;
+ $this.clearSlides();
+ var slidesDiv = $(".slides")[0];
+ slides.forEach(function (slide, index) {
+ var section = document.createElement("section");
+ section.setAttribute("id", index);
+ section.setAttribute("data-background", "#000");
+ var img = document.createElement('img');
+ img.src = slide["file"];
+ img.setAttribute("style", "height: 100%; width: 100%;");
+ section.appendChild(img);
+ slidesDiv.appendChild(section);
+ $this._slides[index.toString()] = index;
+ });
+ this.reinit();
+ },
+ /**
+ * Set a video
+ * @param {Object} video - The video to show as a JS object: {"file": "url/to/file"}
+ */
+ setVideo: function (video) {
+ this.clearSlides();
+ var section = document.createElement("section");
+ section.setAttribute("data-background", "#000");
+ var videoElement = document.createElement("video");
+ videoElement.src = video["file"];
+ videoElement.preload = "auto";
+ videoElement.setAttribute("id", "video");
+ videoElement.setAttribute("style", "height: 100%; width: 100%;");
+ videoElement.autoplay = false;
+ // All the update methods below are Python functions, hence not camelCase
+ videoElement.addEventListener("durationchange", function (event) {
+ mediaWatcher.update_duration(event.target.duration);
+ });
+ videoElement.addEventListener("timeupdate", function (event) {
+ mediaWatcher.update_progress(event.target.currentTime);
+ });
+ videoElement.addEventListener("volumeupdate", function (event) {
+ mediaWatcher.update_volume(event.target.volume);
+ });
+ videoElement.addEventListener("ratechange", function (event) {
+ mediaWatcher.update_playback_rate(event.target.playbackRate);
+ });
+ videoElement.addEventListener("ended", function (event) {
+ mediaWatcher.has_ended(event.target.ended);
+ });
+ videoElement.addEventListener("muted", function (event) {
+ mediaWatcher.has_muted(event.target.muted);
+ });
+ section.appendChild(videoElement);
+ $(".slides")[0].appendChild(section);
+ this.reinit();
+ },
+ /**
+ * Play a video
+ */
+ playVideo: function () {
+ if ($("#video").length == 1) {
+ $("#video")[0].play();
+ }
+ },
+ /**
+ * Pause a video
+ */
+ pauseVideo: function () {
+ if ($("#video").length == 1) {
+ $("#video")[0].pause();
+ }
+ },
+ /**
+ * Stop a video
+ */
+ stopVideo: function () {
+ if ($("#video").length == 1) {
+ $("#video")[0].pause();
+ $("#video")[0].currentTime = 0.0;
+ }
+ },
+ /**
+ * Go to a particular time in a video
+ * @param seconds The position in seconds to seek to
+ */
+ seekVideo: function (seconds) {
+ if ($("#video").length == 1) {
+ $("#video")[0].currentTime = seconds;
+ }
+ },
+ /**
+ * Set the playback rate of a video
+ * @param rate A Double of the rate. 1.0 => 100% speed, 0.75 => 75% speed, 1.25 => 125% speed, etc.
+ */
+ setPlaybackRate: function (rate) {
+ if ($("#video").length == 1) {
+ $("#video")[0].playbackRate = rate;
+ }
+ },
+ /**
+ * Set the volume
+ * @param level The volume level from 0 to 100.
+ */
+ setVideoVolume: function (level) {
+ if ($("#video").length == 1) {
+ $("#video")[0].volume = level / 100.0;
+ }
+ },
+ /**
+ * Mute the volume
+ */
+ toggleVideoMute: function () {
+ if ($("#video").length == 1) {
+ $("#video")[0].muted = !$("#video")[0].muted;
+ }
+ },
+ /**
+ * Clear the background audio playlist
+ */
+ clearPlaylist: function () {
+ if ($("#background-audio").length == 1) {
+ var audio = $("#background-audio")[0];
+ /* audio.playList */
+ }
+ },
+ /**
+ * Add background audio
+ * @param files The list of files as objects in an array
+ */
+ addBackgroundAudio: function (files) {
+ },
+ /**
+ * Go to a slide.
+ * @param slide The slide number or name, e.g. "v1", 0
+ */
+ goToSlide: function (slide) {
+ Reveal.slide(this._slides[slide]);
+ },
+ /**
+ * Go to the next slide in the list
+ */
+ next: Reveal.next,
+ /**
+ * Go to the previous slide in the list
+ */
+ prev: Reveal.prev,
+ /**
+ * Blank the screen
+ */
+ blank: function () {
+ if (!Reveal.isPaused()) {
+ Reveal.togglePause();
+ }
+ // var slidesDiv = $(".slides")[0];
+ },
+ /**
+ * Blank to theme
+ */
+ theme: function () {
+ var slidesDiv = $(".slides")[0];
+ slidesDiv.style.visibility = "hidden";
+ if (Reveal.isPaused()) {
+ Reveal.togglePause();
+ }
+ },
+ /**
+ * Show the screen
+ */
+ show: function () {
+ var slidesDiv = $(".slides")[0];
+ slidesDiv.style.visibility = "visible";
+ if (Reveal.isPaused()) {
+ Reveal.togglePause();
+ }
+ },
+ /**
+ * Figure out how many lines can fit on a slide given the font size
+ * @param fontSize The font size in pts
+ */
+ calculateLineCount: function (fontSize) {
+ var p = $(".slides > section > p");
+ if (p.length == 0) {
+ this.addSlide("v1", "Arky arky");
+ p = $(".slides > section > p");
+ }
+ p = p[0];
+ p.style.fontSize = "" + fontSize + "pt";
+ var d = $(".slides")[0];
+ var lh = parseFloat(_getStyle(p, "line-height"));
+ var dh = parseFloat(_getStyle(d, "height"));
+ return Math.floor(dh / lh);
+ },
+ setTheme: function (theme) {
+ this._theme = theme;
+ var slidesDiv = $(".slides")
+ // Set the background
+ var globalBackground = $("#global-background")[0];
+ var backgroundStyle = {};
+ var backgroundHtml = "";
+ switch (theme.background_type) {
+ case BackgroundType.Transparent:
+ backgroundStyle["background"] = "transparent";
+ break;
+ case BackgroundType.Solid:
+ backgroundStyle["background"] = theme.background_color;
+ break;
+ case BackgroundType.Gradient:
+ switch (theme.background_direction) {
+ case GradientType.Horizontal:
+ backgroundStyle["background"] = _buildLinearGradient("left top", "left bottom",
+ theme.background_start_color,
+ theme.background_end_color);
+ break;
+ case GradientType.Vertical:
+ backgroundStyle["background"] = _buildLinearGradient("left top", "right top",
+ theme.background_start_color,
+ theme.background_end_color);
+ break;
+ case GradientType.LeftTop:
+ backgroundStyle["background"] = _buildLinearGradient("left top", "right bottom",
+ theme.background_start_color,
+ theme.background_end_color);
+ break;
+ case GradientType.LeftBottom:
+ backgroundStyle["background"] = _buildLinearGradient("left bottom", "right top",
+ theme.background_start_color,
+ theme.background_end_color);
+ break;
+ case GradientType.Circular:
+ backgroundStyle["background"] = _buildRadialGradient(window.innerWidth / 2, theme.background_start_color,
+ theme.background_end_color);
+ break;
+ default:
+ backgroundStyle["background"] = "#000";
+ }
+ break;
+ case BackgroundType.Image:
+ backgroundStyle["background-color"] = theme.background_border_color;
+ backgroundStyle["background-image"] = "url('file://" + theme.background_filename + "')";
+ backgroundStyle["background-size"] = "cover";
+ break;
+ case BackgroundType.Video:
+ backgroundStyle["background-color"] = theme.background_border_color;
+ backgroundHtml = "";
+ backgroundStyle["background-size"] = "cover";
+ break;
+ default:
+ backgroundStyle["background"] = "#000";
+ }
+ for (var key in backgroundStyle) {
+ if (backgroundStyle.hasOwnProperty(key)) {
+ globalBackground.style.setProperty(key, backgroundStyle[key]);
+ }
+ }
+ if (!!backgroundHtml) {
+ globalBackground.innerHTML = backgroundHtml;
+ }
+ // set up the main area
+ mainStyle = {
+ "word-wrap": "break-word",
+ /*"margin": "0",
+ "padding": "0"*/
+ };
+ if (!!theme.font_main_outline) {
+ mainStyle["-webkit-text-stroke"] = "" + (parseFloat(theme.font_main_outline_size) / 16.0) + "em " +
+ theme.font_main_outline_color;
+ mainStyle["-webkit-text-fill-color"] = theme.font_main_color;
+ }
+ mainStyle["font-family"] = theme.font_main_name;
+ mainStyle["font-size"] = "" + theme.font_main_size + "pt";
+ mainStyle["font-style"] = !!theme.font_main_italics ? "italic" : "";
+ mainStyle["font-weight"] = !!theme.font_main_bold ? "bold" : "";
+ mainStyle["color"] = theme.font_main_color;
+ mainStyle["line-height"] = "" + (100 + theme.font_main_line_adjustment) + "%";
+ mainStyle["text-align"] = theme.display_horizontal_align;
+ if (theme.display_horizontal_align != HorizontalAlign.Justify) {
+ mainStyle["white-space"] = "pre-wrap";
+ }
+ mainStyle["vertical-align"] = theme.display_vertical_align;
+ if (theme.hasOwnProperty('font_main_shadow_size')) {
+ mainStyle["text-shadow"] = theme.font_main_shadow_color + " " + theme.font_main_shadow_size + "px " +
+ theme.font_main_shadow_size + "px";
+ }
+ mainStyle["padding-bottom"] = theme.display_vertical_align == VerticalAlign.Bottom ? "0.5em" : "0";
+ mainStyle["padding-left"] = !!theme.font_main_outline ? "" + (theme.font_main_outline_size * 2) + "px" : "0";
+ // These need to be fixed, in the Python they use a width passed in as a parameter
+ mainStyle["position"] = "absolute";
+ mainStyle["width"] = "" + (window.innerWidth - (theme.font_main_outline_size * 4)) + "px";
+ mainStyle["height"] = "" + (window.innerHeight - (theme.font_main_outline_size * 4)) + "px";
+ mainStyle["left"] = "" + theme.font_main_x + "px";
+ mainStyle["top"] = "" + theme.font_main_y + "px";
+ var slidesDiv = $(".slides")[0];
+ for (var key in mainStyle) {
+ if (mainStyle.hasOwnProperty(key)) {
+ slidesDiv.style.setProperty(key, mainStyle[key]);
+ }
+ }
+ // Set up the footer
+ footerStyle = {
+ "text-align": "left"
+ };
+ footerStyle["position"] = "absolute";
+ footerStyle["left"] = "" + theme.font_footer_x + "px";
+ footerStyle["bottom"] = "" + (window.innerHeight - theme.font_footer_y - theme.font_footer_height) + "px";
+ footerStyle["width"] = "" + theme.font_footer_width + "px";
+ footerStyle["font-family"] = theme.font_footer_name;
+ footerStyle["font-size"] = "" + theme.font_footer_size + "pt";
+ footerStyle["color"] = theme.font_footer_color;
+ footerStyle["white-space"] = theme.font_footer_wrap ? "normal" : "nowrap";
+ var footer = $(".footer")[0];
+ for (var key in footerStyle) {
+ if (footerStyle.hasOwnProperty(key)) {
+ footer.style.setProperty(key, footerStyle[key]);
+ }
+ }
+ },
+ /**
+ * Return the video types supported by the video tag
+ */
+ getVideoTypes: function () {
+ var videoElement = document.createElement('video');
+ var videoTypes = [];
+ if (videoElement.canPlayType('video/mp4; codecs="mp4v.20.8"') == "probably" ||
+ videoElement.canPlayType('video/mp4; codecs="avc1.42E01E"') == "pobably" ||
+ videoElement.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"') == "probably") {
+ videoTypes.push(['video/mp4', '*.mp4']);
+ }
+ if (videoElement.canPlayType('video/ogg; codecs="theora"') == "probably") {
+ videoTypes.push(['video/ogg', '*.ogv']);
+ }
+ if (videoElement.canPlayType('video/webm; codecs="vp8, vorbis"') == "probably") {
+ videoTypes.push(['video/webm', '*.webm']);
+ }
+ return videoTypes;
+ }
+ }
+};
+new QWebChannel(qt.webChannelTransport, function (channel) {
+ window.mediaWatcher = channel.objects.mediaWatcher;
+});
diff --git a/openlp/core/display/html/reveal.css b/openlp/core/display/html/reveal.css
new file mode 100644
index 000000000..5f501b12c
--- /dev/null
+++ b/openlp/core/display/html/reveal.css
@@ -0,0 +1,1387 @@
+/*!
+ * reveal.js
+ * http://lab.hakim.se/reveal-js
+ * MIT licensed
+ *
+ * Copyright (C) 2017 Hakim El Hattab, http://hakim.se
+ */
+/*********************************************
+ * RESET STYLES
+ *********************************************/
+html, body, .reveal div, .reveal span, .reveal applet, .reveal object, .reveal iframe,
+.reveal h1, .reveal h2, .reveal h3, .reveal h4, .reveal h5, .reveal h6, .reveal p, .reveal blockquote, .reveal pre,
+.reveal a, .reveal abbr, .reveal acronym, .reveal address, .reveal big, .reveal cite, .reveal code,
+.reveal del, .reveal dfn, .reveal em, .reveal img, .reveal ins, .reveal kbd, .reveal q, .reveal s, .reveal samp,
+.reveal small, .reveal strike, .reveal strong, .reveal sub, .reveal sup, .reveal tt, .reveal var,
+.reveal b, .reveal u, .reveal center,
+.reveal dl, .reveal dt, .reveal dd, .reveal ol, .reveal ul, .reveal li,
+.reveal fieldset, .reveal form, .reveal label, .reveal legend,
+.reveal table, .reveal caption, .reveal tbody, .reveal tfoot, .reveal thead, .reveal tr, .reveal th, .reveal td,
+.reveal article, .reveal aside, .reveal canvas, .reveal details, .reveal embed,
+.reveal figure, .reveal figcaption, .reveal footer, .reveal header, .reveal hgroup,
+.reveal menu, .reveal nav, .reveal output, .reveal ruby, .reveal section, .reveal summary,
+.reveal time, .reveal mark, .reveal audio, .reveal video {
+ margin: 0;
+ padding: 0;
+ border: 0;
+ font-size: 100%;
+ font: inherit;
+ vertical-align: baseline; }
+
+.reveal article, .reveal aside, .reveal details, .reveal figcaption, .reveal figure,
+.reveal footer, .reveal header, .reveal hgroup, .reveal menu, .reveal nav, .reveal section {
+ display: block; }
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+html,
+body {
+ width: 100%;
+ height: 100%;
+ overflow: hidden; }
+
+body {
+ position: relative;
+ line-height: 1;
+ background-color: #fff;
+ color: #000; }
+
+/*********************************************
+ * VIEW FRAGMENTS
+ *********************************************/
+.reveal .slides section .fragment {
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transition: all .2s ease;
+ transition: all .2s ease; }
+ .reveal .slides section .fragment.visible {
+ opacity: 1;
+ visibility: inherit; }
+
+.reveal .slides section .fragment.grow {
+ opacity: 1;
+ visibility: inherit; }
+ .reveal .slides section .fragment.grow.visible {
+ -webkit-transform: scale(1.3);
+ transform: scale(1.3); }
+
+.reveal .slides section .fragment.shrink {
+ opacity: 1;
+ visibility: inherit; }
+ .reveal .slides section .fragment.shrink.visible {
+ -webkit-transform: scale(0.7);
+ transform: scale(0.7); }
+
+.reveal .slides section .fragment.zoom-in {
+ -webkit-transform: scale(0.1);
+ transform: scale(0.1); }
+ .reveal .slides section .fragment.zoom-in.visible {
+ -webkit-transform: none;
+ transform: none; }
+
+.reveal .slides section .fragment.fade-out {
+ opacity: 1;
+ visibility: inherit; }
+ .reveal .slides section .fragment.fade-out.visible {
+ opacity: 0;
+ visibility: hidden; }
+
+.reveal .slides section .fragment.semi-fade-out {
+ opacity: 1;
+ visibility: inherit; }
+ .reveal .slides section .fragment.semi-fade-out.visible {
+ opacity: 0.5;
+ visibility: inherit; }
+
+.reveal .slides section .fragment.strike {
+ opacity: 1;
+ visibility: inherit; }
+ .reveal .slides section .fragment.strike.visible {
+ text-decoration: line-through; }
+
+.reveal .slides section .fragment.fade-up {
+ -webkit-transform: translate(0, 20%);
+ transform: translate(0, 20%); }
+ .reveal .slides section .fragment.fade-up.visible {
+ -webkit-transform: translate(0, 0);
+ transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-down {
+ -webkit-transform: translate(0, -20%);
+ transform: translate(0, -20%); }
+ .reveal .slides section .fragment.fade-down.visible {
+ -webkit-transform: translate(0, 0);
+ transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-right {
+ -webkit-transform: translate(-20%, 0);
+ transform: translate(-20%, 0); }
+ .reveal .slides section .fragment.fade-right.visible {
+ -webkit-transform: translate(0, 0);
+ transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-left {
+ -webkit-transform: translate(20%, 0);
+ transform: translate(20%, 0); }
+ .reveal .slides section .fragment.fade-left.visible {
+ -webkit-transform: translate(0, 0);
+ transform: translate(0, 0); }
+
+.reveal .slides section .fragment.current-visible {
+ opacity: 0;
+ visibility: hidden; }
+ .reveal .slides section .fragment.current-visible.current-fragment {
+ opacity: 1;
+ visibility: inherit; }
+
+.reveal .slides section .fragment.highlight-red,
+.reveal .slides section .fragment.highlight-current-red,
+.reveal .slides section .fragment.highlight-green,
+.reveal .slides section .fragment.highlight-current-green,
+.reveal .slides section .fragment.highlight-blue,
+.reveal .slides section .fragment.highlight-current-blue {
+ opacity: 1;
+ visibility: inherit; }
+
+.reveal .slides section .fragment.highlight-red.visible {
+ color: #ff2c2d; }
+
+.reveal .slides section .fragment.highlight-green.visible {
+ color: #17ff2e; }
+
+.reveal .slides section .fragment.highlight-blue.visible {
+ color: #1b91ff; }
+
+.reveal .slides section .fragment.highlight-current-red.current-fragment {
+ color: #ff2c2d; }
+
+.reveal .slides section .fragment.highlight-current-green.current-fragment {
+ color: #17ff2e; }
+
+.reveal .slides section .fragment.highlight-current-blue.current-fragment {
+ color: #1b91ff; }
+
+/*********************************************
+ * DEFAULT ELEMENT STYLES
+ *********************************************/
+/* Fixes issue in Chrome where italic fonts did not appear when printing to PDF */
+.reveal:after {
+ content: '';
+ font-style: italic; }
+
+.reveal iframe {
+ z-index: 1; }
+
+/** Prevents layering issues in certain browser/transition combinations */
+.reveal a {
+ position: relative; }
+
+.reveal .stretch {
+ max-width: none;
+ max-height: none; }
+
+.reveal pre.stretch code {
+ height: 100%;
+ max-height: 100%;
+ box-sizing: border-box; }
+
+/*********************************************
+ * CONTROLS
+ *********************************************/
+.reveal .controls {
+ display: none;
+ position: fixed;
+ width: 110px;
+ height: 110px;
+ z-index: 30;
+ right: 10px;
+ bottom: 10px;
+ -webkit-user-select: none; }
+
+.reveal .controls button {
+ padding: 0;
+ position: absolute;
+ opacity: 0.05;
+ width: 0;
+ height: 0;
+ background-color: transparent;
+ border: 12px solid transparent;
+ -webkit-transform: scale(0.9999);
+ transform: scale(0.9999);
+ -webkit-transition: all 0.2s ease;
+ transition: all 0.2s ease;
+ -webkit-appearance: none;
+ -webkit-tap-highlight-color: transparent; }
+
+.reveal .controls .enabled {
+ opacity: 0.7;
+ cursor: pointer; }
+
+.reveal .controls .enabled:active {
+ margin-top: 1px; }
+
+.reveal .controls .navigate-left {
+ top: 42px;
+ border-right-width: 22px;
+ border-right-color: #000; }
+
+.reveal .controls .navigate-left.fragmented {
+ opacity: 0.3; }
+
+.reveal .controls .navigate-right {
+ left: 74px;
+ top: 42px;
+ border-left-width: 22px;
+ border-left-color: #000; }
+
+.reveal .controls .navigate-right.fragmented {
+ opacity: 0.3; }
+
+.reveal .controls .navigate-up {
+ left: 42px;
+ border-bottom-width: 22px;
+ border-bottom-color: #000; }
+
+.reveal .controls .navigate-up.fragmented {
+ opacity: 0.3; }
+
+.reveal .controls .navigate-down {
+ left: 42px;
+ top: 74px;
+ border-top-width: 22px;
+ border-top-color: #000; }
+
+.reveal .controls .navigate-down.fragmented {
+ opacity: 0.3; }
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+.reveal .progress {
+ position: fixed;
+ display: none;
+ height: 3px;
+ width: 100%;
+ bottom: 0;
+ left: 0;
+ z-index: 10;
+ background-color: rgba(0, 0, 0, 0.2); }
+
+.reveal .progress:after {
+ content: '';
+ display: block;
+ position: absolute;
+ height: 20px;
+ width: 100%;
+ top: -20px; }
+
+.reveal .progress span {
+ display: block;
+ height: 100%;
+ width: 0px;
+ background-color: #000;
+ -webkit-transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+ transition: width 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/*********************************************
+ * SLIDE NUMBER
+ *********************************************/
+.reveal .slide-number {
+ position: fixed;
+ display: block;
+ right: 8px;
+ bottom: 8px;
+ z-index: 31;
+ font-family: Helvetica, sans-serif;
+ font-size: 12px;
+ line-height: 1;
+ color: #fff;
+ background-color: rgba(0, 0, 0, 0.4);
+ padding: 5px; }
+
+.reveal .slide-number-delimiter {
+ margin: 0 3px; }
+
+/*********************************************
+ * SLIDES
+ *********************************************/
+.reveal {
+ position: relative;
+ width: 100%;
+ height: 100%;
+ overflow: hidden;
+ -ms-touch-action: none;
+ touch-action: none; }
+
+.reveal .slides {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ top: 0;
+ right: 0;
+ bottom: 0;
+ left: 0;
+ margin: auto;
+ pointer-events: none;
+ overflow: visible;
+ z-index: 1;
+ text-align: center;
+ -webkit-perspective: 600px;
+ perspective: 600px;
+ -webkit-perspective-origin: 50% 40%;
+ perspective-origin: 50% 40%; }
+
+.reveal .slides > section {
+ -ms-perspective: 600px; }
+
+.reveal .slides > section,
+.reveal .slides > section > section {
+ display: none;
+ position: absolute;
+ width: 100%;
+ padding: 20px 0px;
+ pointer-events: auto;
+ z-index: 10;
+ -webkit-transform-style: flat;
+ transform-style: flat;
+ -webkit-transition: -webkit-transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), -webkit-transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+ transition: transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"] .slides section {
+ -webkit-transition-duration: 400ms;
+ transition-duration: 400ms; }
+
+.reveal[data-transition-speed="slow"] .slides section {
+ -webkit-transition-duration: 1200ms;
+ transition-duration: 1200ms; }
+
+/* Slide-specific transition speed overrides */
+.reveal .slides section[data-transition-speed="fast"] {
+ -webkit-transition-duration: 400ms;
+ transition-duration: 400ms; }
+
+.reveal .slides section[data-transition-speed="slow"] {
+ -webkit-transition-duration: 1200ms;
+ transition-duration: 1200ms; }
+
+.reveal .slides > section.stack {
+ padding-top: 0;
+ padding-bottom: 0; }
+
+.reveal .slides > section.present,
+.reveal .slides > section > section.present {
+ display: block;
+ z-index: 11;
+ opacity: 1; }
+
+.reveal .slides > section:empty,
+.reveal .slides > section > section:empty,
+.reveal .slides > section[data-background-interactive],
+.reveal .slides > section > section[data-background-interactive] {
+ pointer-events: none; }
+
+.reveal.center,
+.reveal.center .slides,
+.reveal.center .slides section {
+ min-height: 0 !important; }
+
+/* Don't allow interaction with invisible slides */
+.reveal .slides > section.future,
+.reveal .slides > section > section.future,
+.reveal .slides > section.past,
+.reveal .slides > section > section.past {
+ pointer-events: none; }
+
+.reveal.overview .slides > section,
+.reveal.overview .slides > section > section {
+ pointer-events: auto; }
+
+.reveal .slides > section.past,
+.reveal .slides > section.future,
+.reveal .slides > section > section.past,
+.reveal .slides > section > section.future {
+ opacity: 0; }
+
+/*********************************************
+ * Mixins for readability of transitions
+ *********************************************/
+/*********************************************
+ * SLIDE TRANSITION
+ * Aliased 'linear' for backwards compatibility
+ *********************************************/
+.reveal.slide section {
+ -webkit-backface-visibility: hidden;
+ backface-visibility: hidden; }
+
+.reveal .slides > section[data-transition=slide].past,
+.reveal .slides > section[data-transition~=slide-out].past,
+.reveal.slide .slides > section:not([data-transition]).past {
+ -webkit-transform: translate(-150%, 0);
+ transform: translate(-150%, 0); }
+
+.reveal .slides > section[data-transition=slide].future,
+.reveal .slides > section[data-transition~=slide-in].future,
+.reveal.slide .slides > section:not([data-transition]).future {
+ -webkit-transform: translate(150%, 0);
+ transform: translate(150%, 0); }
+
+.reveal .slides > section > section[data-transition=slide].past,
+.reveal .slides > section > section[data-transition~=slide-out].past,
+.reveal.slide .slides > section > section:not([data-transition]).past {
+ -webkit-transform: translate(0, -150%);
+ transform: translate(0, -150%); }
+
+.reveal .slides > section > section[data-transition=slide].future,
+.reveal .slides > section > section[data-transition~=slide-in].future,
+.reveal.slide .slides > section > section:not([data-transition]).future {
+ -webkit-transform: translate(0, 150%);
+ transform: translate(0, 150%); }
+
+.reveal.linear section {
+ -webkit-backface-visibility: hidden;
+ backface-visibility: hidden; }
+
+.reveal .slides > section[data-transition=linear].past,
+.reveal .slides > section[data-transition~=linear-out].past,
+.reveal.linear .slides > section:not([data-transition]).past {
+ -webkit-transform: translate(-150%, 0);
+ transform: translate(-150%, 0); }
+
+.reveal .slides > section[data-transition=linear].future,
+.reveal .slides > section[data-transition~=linear-in].future,
+.reveal.linear .slides > section:not([data-transition]).future {
+ -webkit-transform: translate(150%, 0);
+ transform: translate(150%, 0); }
+
+.reveal .slides > section > section[data-transition=linear].past,
+.reveal .slides > section > section[data-transition~=linear-out].past,
+.reveal.linear .slides > section > section:not([data-transition]).past {
+ -webkit-transform: translate(0, -150%);
+ transform: translate(0, -150%); }
+
+.reveal .slides > section > section[data-transition=linear].future,
+.reveal .slides > section > section[data-transition~=linear-in].future,
+.reveal.linear .slides > section > section:not([data-transition]).future {
+ -webkit-transform: translate(0, 150%);
+ transform: translate(0, 150%); }
+
+/*********************************************
+ * CONVEX TRANSITION
+ * Aliased 'default' for backwards compatibility
+ *********************************************/
+.reveal .slides section[data-transition=default].stack,
+.reveal.default .slides section.stack {
+ -webkit-transform-style: preserve-3d;
+ transform-style: preserve-3d; }
+
+.reveal .slides > section[data-transition=default].past,
+.reveal .slides > section[data-transition~=default-out].past,
+.reveal.default .slides > section:not([data-transition]).past {
+ -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); }
+
+.reveal .slides > section[data-transition=default].future,
+.reveal .slides > section[data-transition~=default-in].future,
+.reveal.default .slides > section:not([data-transition]).future {
+ -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+ transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); }
+
+.reveal .slides > section > section[data-transition=default].past,
+.reveal .slides > section > section[data-transition~=default-out].past,
+.reveal.default .slides > section > section:not([data-transition]).past {
+ -webkit-transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0);
+ transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); }
+
+.reveal .slides > section > section[data-transition=default].future,
+.reveal .slides > section > section[data-transition~=default-in].future,
+.reveal.default .slides > section > section:not([data-transition]).future {
+ -webkit-transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0);
+ transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); }
+
+.reveal .slides section[data-transition=convex].stack,
+.reveal.convex .slides section.stack {
+ -webkit-transform-style: preserve-3d;
+ transform-style: preserve-3d; }
+
+.reveal .slides > section[data-transition=convex].past,
+.reveal .slides > section[data-transition~=convex-out].past,
+.reveal.convex .slides > section:not([data-transition]).past {
+ -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); }
+
+.reveal .slides > section[data-transition=convex].future,
+.reveal .slides > section[data-transition~=convex-in].future,
+.reveal.convex .slides > section:not([data-transition]).future {
+ -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+ transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); }
+
+.reveal .slides > section > section[data-transition=convex].past,
+.reveal .slides > section > section[data-transition~=convex-out].past,
+.reveal.convex .slides > section > section:not([data-transition]).past {
+ -webkit-transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0);
+ transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0); }
+
+.reveal .slides > section > section[data-transition=convex].future,
+.reveal .slides > section > section[data-transition~=convex-in].future,
+.reveal.convex .slides > section > section:not([data-transition]).future {
+ -webkit-transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0);
+ transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0); }
+
+/*********************************************
+ * CONCAVE TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=concave].stack,
+.reveal.concave .slides section.stack {
+ -webkit-transform-style: preserve-3d;
+ transform-style: preserve-3d; }
+
+.reveal .slides > section[data-transition=concave].past,
+.reveal .slides > section[data-transition~=concave-out].past,
+.reveal.concave .slides > section:not([data-transition]).past {
+ -webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+ transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); }
+
+.reveal .slides > section[data-transition=concave].future,
+.reveal .slides > section[data-transition~=concave-in].future,
+.reveal.concave .slides > section:not([data-transition]).future {
+ -webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+ transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); }
+
+.reveal .slides > section > section[data-transition=concave].past,
+.reveal .slides > section > section[data-transition~=concave-out].past,
+.reveal.concave .slides > section > section:not([data-transition]).past {
+ -webkit-transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0);
+ transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0); }
+
+.reveal .slides > section > section[data-transition=concave].future,
+.reveal .slides > section > section[data-transition~=concave-in].future,
+.reveal.concave .slides > section > section:not([data-transition]).future {
+ -webkit-transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0);
+ transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0); }
+
+/*********************************************
+ * ZOOM TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=zoom],
+.reveal.zoom .slides section:not([data-transition]) {
+ -webkit-transition-timing-function: ease;
+ transition-timing-function: ease; }
+
+.reveal .slides > section[data-transition=zoom].past,
+.reveal .slides > section[data-transition~=zoom-out].past,
+.reveal.zoom .slides > section:not([data-transition]).past {
+ visibility: hidden;
+ -webkit-transform: scale(16);
+ transform: scale(16); }
+
+.reveal .slides > section[data-transition=zoom].future,
+.reveal .slides > section[data-transition~=zoom-in].future,
+.reveal.zoom .slides > section:not([data-transition]).future {
+ visibility: hidden;
+ -webkit-transform: scale(0.2);
+ transform: scale(0.2); }
+
+.reveal .slides > section > section[data-transition=zoom].past,
+.reveal .slides > section > section[data-transition~=zoom-out].past,
+.reveal.zoom .slides > section > section:not([data-transition]).past {
+ -webkit-transform: translate(0, -150%);
+ transform: translate(0, -150%); }
+
+.reveal .slides > section > section[data-transition=zoom].future,
+.reveal .slides > section > section[data-transition~=zoom-in].future,
+.reveal.zoom .slides > section > section:not([data-transition]).future {
+ -webkit-transform: translate(0, 150%);
+ transform: translate(0, 150%); }
+
+/*********************************************
+ * CUBE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+.reveal.cube .slides {
+ -webkit-perspective: 1300px;
+ perspective: 1300px; }
+
+.reveal.cube .slides section {
+ padding: 30px;
+ min-height: 700px;
+ -webkit-backface-visibility: hidden;
+ backface-visibility: hidden;
+ box-sizing: border-box;
+ -webkit-transform-style: preserve-3d;
+ transform-style: preserve-3d; }
+
+.reveal.center.cube .slides section {
+ min-height: 0; }
+
+.reveal.cube .slides section:not(.stack):before {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 100%;
+ height: 100%;
+ left: 0;
+ top: 0;
+ background: rgba(0, 0, 0, 0.1);
+ border-radius: 4px;
+ -webkit-transform: translateZ(-20px);
+ transform: translateZ(-20px); }
+
+.reveal.cube .slides section:not(.stack):after {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 90%;
+ height: 30px;
+ left: 5%;
+ bottom: 0;
+ background: none;
+ z-index: 1;
+ border-radius: 4px;
+ box-shadow: 0px 95px 25px rgba(0, 0, 0, 0.2);
+ -webkit-transform: translateZ(-90px) rotateX(65deg);
+ transform: translateZ(-90px) rotateX(65deg); }
+
+.reveal.cube .slides > section.stack {
+ padding: 0;
+ background: none; }
+
+.reveal.cube .slides > section.past {
+ -webkit-transform-origin: 100% 0%;
+ transform-origin: 100% 0%;
+ -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg);
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg); }
+
+.reveal.cube .slides > section.future {
+ -webkit-transform-origin: 0% 0%;
+ transform-origin: 0% 0%;
+ -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg);
+ transform: translate3d(100%, 0, 0) rotateY(90deg); }
+
+.reveal.cube .slides > section > section.past {
+ -webkit-transform-origin: 0% 100%;
+ transform-origin: 0% 100%;
+ -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg);
+ transform: translate3d(0, -100%, 0) rotateX(90deg); }
+
+.reveal.cube .slides > section > section.future {
+ -webkit-transform-origin: 0% 0%;
+ transform-origin: 0% 0%;
+ -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg);
+ transform: translate3d(0, 100%, 0) rotateX(-90deg); }
+
+/*********************************************
+ * PAGE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+.reveal.page .slides {
+ -webkit-perspective-origin: 0% 50%;
+ perspective-origin: 0% 50%;
+ -webkit-perspective: 3000px;
+ perspective: 3000px; }
+
+.reveal.page .slides section {
+ padding: 30px;
+ min-height: 700px;
+ box-sizing: border-box;
+ -webkit-transform-style: preserve-3d;
+ transform-style: preserve-3d; }
+
+.reveal.page .slides section.past {
+ z-index: 12; }
+
+.reveal.page .slides section:not(.stack):before {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 100%;
+ height: 100%;
+ left: 0;
+ top: 0;
+ background: rgba(0, 0, 0, 0.1);
+ -webkit-transform: translateZ(-20px);
+ transform: translateZ(-20px); }
+
+.reveal.page .slides section:not(.stack):after {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 90%;
+ height: 30px;
+ left: 5%;
+ bottom: 0;
+ background: none;
+ z-index: 1;
+ border-radius: 4px;
+ box-shadow: 0px 95px 25px rgba(0, 0, 0, 0.2);
+ -webkit-transform: translateZ(-90px) rotateX(65deg); }
+
+.reveal.page .slides > section.stack {
+ padding: 0;
+ background: none; }
+
+.reveal.page .slides > section.past {
+ -webkit-transform-origin: 0% 0%;
+ transform-origin: 0% 0%;
+ -webkit-transform: translate3d(-40%, 0, 0) rotateY(-80deg);
+ transform: translate3d(-40%, 0, 0) rotateY(-80deg); }
+
+.reveal.page .slides > section.future {
+ -webkit-transform-origin: 100% 0%;
+ transform-origin: 100% 0%;
+ -webkit-transform: translate3d(0, 0, 0);
+ transform: translate3d(0, 0, 0); }
+
+.reveal.page .slides > section > section.past {
+ -webkit-transform-origin: 0% 0%;
+ transform-origin: 0% 0%;
+ -webkit-transform: translate3d(0, -40%, 0) rotateX(80deg);
+ transform: translate3d(0, -40%, 0) rotateX(80deg); }
+
+.reveal.page .slides > section > section.future {
+ -webkit-transform-origin: 0% 100%;
+ transform-origin: 0% 100%;
+ -webkit-transform: translate3d(0, 0, 0);
+ transform: translate3d(0, 0, 0); }
+
+/*********************************************
+ * FADE TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=fade],
+.reveal.fade .slides section:not([data-transition]),
+.reveal.fade .slides > section > section:not([data-transition]) {
+ -webkit-transform: none;
+ transform: none;
+ -webkit-transition: opacity 0.5s;
+ transition: opacity 0.5s; }
+
+.reveal.fade.overview .slides section,
+.reveal.fade.overview .slides > section > section {
+ -webkit-transition: none;
+ transition: none; }
+
+/*********************************************
+ * NO TRANSITION
+ *********************************************/
+.reveal .slides section[data-transition=none],
+.reveal.none .slides section:not([data-transition]) {
+ -webkit-transform: none;
+ transform: none;
+ -webkit-transition: none;
+ transition: none; }
+
+/*********************************************
+ * PAUSED MODE
+ *********************************************/
+.reveal .pause-overlay {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ background: black;
+ visibility: hidden;
+ opacity: 0;
+ z-index: 100;
+ -webkit-transition: all 1s ease;
+ transition: all 1s ease; }
+
+.reveal.paused .pause-overlay {
+ visibility: visible;
+ opacity: 1; }
+
+/*********************************************
+ * FALLBACK
+ *********************************************/
+.no-transforms {
+ overflow-y: auto; }
+
+.no-transforms .reveal .slides {
+ position: relative;
+ width: 80%;
+ height: auto !important;
+ top: 0;
+ left: 50%;
+ margin: 0;
+ text-align: center; }
+
+.no-transforms .reveal .controls,
+.no-transforms .reveal .progress {
+ display: none !important; }
+
+.no-transforms .reveal .slides section {
+ display: block !important;
+ opacity: 1 !important;
+ position: relative !important;
+ height: auto;
+ min-height: 0;
+ top: 0;
+ left: -50%;
+ margin: 70px 0;
+ -webkit-transform: none;
+ transform: none; }
+
+.no-transforms .reveal .slides section section {
+ left: 0; }
+
+.reveal .no-transition,
+.reveal .no-transition * {
+ -webkit-transition: none !important;
+ transition: none !important; }
+
+/*********************************************
+ * PER-SLIDE BACKGROUNDS
+ *********************************************/
+.reveal .backgrounds {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ top: 0;
+ left: 0;
+ -webkit-perspective: 600px;
+ perspective: 600px; }
+
+.reveal .slide-background {
+ display: none;
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ opacity: 0;
+ visibility: hidden;
+ overflow: hidden;
+ background-color: transparent;
+ background-position: 50% 50%;
+ background-repeat: no-repeat;
+ background-size: cover;
+ -webkit-transition: all 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
+ transition: all 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
+
+.reveal .slide-background.stack {
+ display: block; }
+
+.reveal .slide-background.present {
+ opacity: 1;
+ visibility: visible;
+ z-index: 2; }
+
+.print-pdf .reveal .slide-background {
+ opacity: 1 !important;
+ visibility: visible !important; }
+
+/* Video backgrounds */
+.reveal .slide-background video {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ max-width: none;
+ max-height: none;
+ top: 0;
+ left: 0;
+ -o-object-fit: cover;
+ object-fit: cover; }
+
+.reveal .slide-background[data-background-size="contain"] video {
+ -o-object-fit: contain;
+ object-fit: contain; }
+
+/* Immediate transition style */
+.reveal[data-background-transition=none] > .backgrounds .slide-background,
+.reveal > .backgrounds .slide-background[data-background-transition=none] {
+ -webkit-transition: none;
+ transition: none; }
+
+/* Slide */
+.reveal[data-background-transition=slide] > .backgrounds .slide-background,
+.reveal > .backgrounds .slide-background[data-background-transition=slide] {
+ opacity: 1;
+ -webkit-backface-visibility: hidden;
+ backface-visibility: hidden; }
+
+.reveal[data-background-transition=slide] > .backgrounds .slide-background.past,
+.reveal > .backgrounds .slide-background.past[data-background-transition=slide] {
+ -webkit-transform: translate(-100%, 0);
+ transform: translate(-100%, 0); }
+
+.reveal[data-background-transition=slide] > .backgrounds .slide-background.future,
+.reveal > .backgrounds .slide-background.future[data-background-transition=slide] {
+ -webkit-transform: translate(100%, 0);
+ transform: translate(100%, 0); }
+
+.reveal[data-background-transition=slide] > .backgrounds .slide-background > .slide-background.past,
+.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=slide] {
+ -webkit-transform: translate(0, -100%);
+ transform: translate(0, -100%); }
+
+.reveal[data-background-transition=slide] > .backgrounds .slide-background > .slide-background.future,
+.reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=slide] {
+ -webkit-transform: translate(0, 100%);
+ transform: translate(0, 100%); }
+
+/* Convex */
+.reveal[data-background-transition=convex] > .backgrounds .slide-background.past,
+.reveal > .backgrounds .slide-background.past[data-background-transition=convex] {
+ opacity: 0;
+ -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0); }
+
+.reveal[data-background-transition=convex] > .backgrounds .slide-background.future,
+.reveal > .backgrounds .slide-background.future[data-background-transition=convex] {
+ opacity: 0;
+ -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+ transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0); }
+
+.reveal[data-background-transition=convex] > .backgrounds .slide-background > .slide-background.past,
+.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=convex] {
+ opacity: 0;
+ -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0);
+ transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0); }
+
+.reveal[data-background-transition=convex] > .backgrounds .slide-background > .slide-background.future,
+.reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=convex] {
+ opacity: 0;
+ -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0);
+ transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0); }
+
+/* Concave */
+.reveal[data-background-transition=concave] > .backgrounds .slide-background.past,
+.reveal > .backgrounds .slide-background.past[data-background-transition=concave] {
+ opacity: 0;
+ -webkit-transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+ transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0); }
+
+.reveal[data-background-transition=concave] > .backgrounds .slide-background.future,
+.reveal > .backgrounds .slide-background.future[data-background-transition=concave] {
+ opacity: 0;
+ -webkit-transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+ transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0); }
+
+.reveal[data-background-transition=concave] > .backgrounds .slide-background > .slide-background.past,
+.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=concave] {
+ opacity: 0;
+ -webkit-transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, -100%, 0);
+ transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, -100%, 0); }
+
+.reveal[data-background-transition=concave] > .backgrounds .slide-background > .slide-background.future,
+.reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=concave] {
+ opacity: 0;
+ -webkit-transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 100%, 0);
+ transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 100%, 0); }
+
+/* Zoom */
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background,
+.reveal > .backgrounds .slide-background[data-background-transition=zoom] {
+ -webkit-transition-timing-function: ease;
+ transition-timing-function: ease; }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background.past,
+.reveal > .backgrounds .slide-background.past[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transform: scale(16);
+ transform: scale(16); }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background.future,
+.reveal > .backgrounds .slide-background.future[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transform: scale(0.2);
+ transform: scale(0.2); }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background > .slide-background.past,
+.reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transform: scale(16);
+ transform: scale(16); }
+
+.reveal[data-background-transition=zoom] > .backgrounds .slide-background > .slide-background.future,
+.reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transform: scale(0.2);
+ transform: scale(0.2); }
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"] > .backgrounds .slide-background {
+ -webkit-transition-duration: 400ms;
+ transition-duration: 400ms; }
+
+.reveal[data-transition-speed="slow"] > .backgrounds .slide-background {
+ -webkit-transition-duration: 1200ms;
+ transition-duration: 1200ms; }
+
+/*********************************************
+ * OVERVIEW
+ *********************************************/
+.reveal.overview {
+ -webkit-perspective-origin: 50% 50%;
+ perspective-origin: 50% 50%;
+ -webkit-perspective: 700px;
+ perspective: 700px; }
+ .reveal.overview .slides {
+ -moz-transform-style: preserve-3d; }
+ .reveal.overview .slides section {
+ height: 100%;
+ top: 0 !important;
+ opacity: 1 !important;
+ overflow: hidden;
+ visibility: visible !important;
+ cursor: pointer;
+ box-sizing: border-box; }
+ .reveal.overview .slides section:hover,
+ .reveal.overview .slides section.present {
+ outline: 10px solid rgba(150, 150, 150, 0.4);
+ outline-offset: 10px; }
+ .reveal.overview .slides section .fragment {
+ opacity: 1;
+ -webkit-transition: none;
+ transition: none; }
+ .reveal.overview .slides section:after,
+ .reveal.overview .slides section:before {
+ display: none !important; }
+ .reveal.overview .slides > section.stack {
+ padding: 0;
+ top: 0 !important;
+ background: none;
+ outline: none;
+ overflow: visible; }
+ .reveal.overview .backgrounds {
+ -webkit-perspective: inherit;
+ perspective: inherit;
+ -moz-transform-style: preserve-3d; }
+ .reveal.overview .backgrounds .slide-background {
+ opacity: 1;
+ visibility: visible;
+ outline: 10px solid rgba(150, 150, 150, 0.1);
+ outline-offset: 10px; }
+ .reveal.overview .backgrounds .slide-background.stack {
+ overflow: visible; }
+
+.reveal.overview .slides section,
+.reveal.overview-deactivating .slides section {
+ -webkit-transition: none;
+ transition: none; }
+
+.reveal.overview .backgrounds .slide-background,
+.reveal.overview-deactivating .backgrounds .slide-background {
+ -webkit-transition: none;
+ transition: none; }
+
+/*********************************************
+ * RTL SUPPORT
+ *********************************************/
+.reveal.rtl .slides,
+.reveal.rtl .slides h1,
+.reveal.rtl .slides h2,
+.reveal.rtl .slides h3,
+.reveal.rtl .slides h4,
+.reveal.rtl .slides h5,
+.reveal.rtl .slides h6 {
+ direction: rtl;
+ font-family: sans-serif; }
+
+.reveal.rtl pre,
+.reveal.rtl code {
+ direction: ltr; }
+
+.reveal.rtl ol,
+.reveal.rtl ul {
+ text-align: right; }
+
+.reveal.rtl .progress span {
+ float: right; }
+
+/*********************************************
+ * PARALLAX BACKGROUND
+ *********************************************/
+.reveal.has-parallax-background .backgrounds {
+ -webkit-transition: all 0.8s ease;
+ transition: all 0.8s ease; }
+
+/* Global transition speed settings */
+.reveal.has-parallax-background[data-transition-speed="fast"] .backgrounds {
+ -webkit-transition-duration: 400ms;
+ transition-duration: 400ms; }
+
+.reveal.has-parallax-background[data-transition-speed="slow"] .backgrounds {
+ -webkit-transition-duration: 1200ms;
+ transition-duration: 1200ms; }
+
+/*********************************************
+ * LINK PREVIEW OVERLAY
+ *********************************************/
+.reveal .overlay {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ z-index: 1000;
+ background: rgba(0, 0, 0, 0.9);
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transition: all 0.3s ease;
+ transition: all 0.3s ease; }
+
+.reveal .overlay.visible {
+ opacity: 1;
+ visibility: visible; }
+
+.reveal .overlay .spinner {
+ position: absolute;
+ display: block;
+ top: 50%;
+ left: 50%;
+ width: 32px;
+ height: 32px;
+ margin: -16px 0 0 -16px;
+ z-index: 10;
+ background-image: url(data:image/gif;base64,R0lGODlhIAAgAPMAAJmZmf%2F%2F%2F6%2Bvr8nJybW1tcDAwOjo6Nvb26ioqKOjo7Ozs%2FLy8vz8%2FAAAAAAAAAAAACH%2FC05FVFNDQVBFMi4wAwEAAAAh%2FhpDcmVhdGVkIHdpdGggYWpheGxvYWQuaW5mbwAh%2BQQJCgAAACwAAAAAIAAgAAAE5xDISWlhperN52JLhSSdRgwVo1ICQZRUsiwHpTJT4iowNS8vyW2icCF6k8HMMBkCEDskxTBDAZwuAkkqIfxIQyhBQBFvAQSDITM5VDW6XNE4KagNh6Bgwe60smQUB3d4Rz1ZBApnFASDd0hihh12BkE9kjAJVlycXIg7CQIFA6SlnJ87paqbSKiKoqusnbMdmDC2tXQlkUhziYtyWTxIfy6BE8WJt5YJvpJivxNaGmLHT0VnOgSYf0dZXS7APdpB309RnHOG5gDqXGLDaC457D1zZ%2FV%2FnmOM82XiHRLYKhKP1oZmADdEAAAh%2BQQJCgAAACwAAAAAIAAgAAAE6hDISWlZpOrNp1lGNRSdRpDUolIGw5RUYhhHukqFu8DsrEyqnWThGvAmhVlteBvojpTDDBUEIFwMFBRAmBkSgOrBFZogCASwBDEY%2FCZSg7GSE0gSCjQBMVG023xWBhklAnoEdhQEfyNqMIcKjhRsjEdnezB%2BA4k8gTwJhFuiW4dokXiloUepBAp5qaKpp6%2BHo7aWW54wl7obvEe0kRuoplCGepwSx2jJvqHEmGt6whJpGpfJCHmOoNHKaHx61WiSR92E4lbFoq%2BB6QDtuetcaBPnW6%2BO7wDHpIiK9SaVK5GgV543tzjgGcghAgAh%2BQQJCgAAACwAAAAAIAAgAAAE7hDISSkxpOrN5zFHNWRdhSiVoVLHspRUMoyUakyEe8PTPCATW9A14E0UvuAKMNAZKYUZCiBMuBakSQKG8G2FzUWox2AUtAQFcBKlVQoLgQReZhQlCIJesQXI5B0CBnUMOxMCenoCfTCEWBsJColTMANldx15BGs8B5wlCZ9Po6OJkwmRpnqkqnuSrayqfKmqpLajoiW5HJq7FL1Gr2mMMcKUMIiJgIemy7xZtJsTmsM4xHiKv5KMCXqfyUCJEonXPN2rAOIAmsfB3uPoAK%2B%2BG%2Bw48edZPK%2BM6hLJpQg484enXIdQFSS1u6UhksENEQAAIfkECQoAAAAsAAAAACAAIAAABOcQyEmpGKLqzWcZRVUQnZYg1aBSh2GUVEIQ2aQOE%2BG%2BcD4ntpWkZQj1JIiZIogDFFyHI0UxQwFugMSOFIPJftfVAEoZLBbcLEFhlQiqGp1Vd140AUklUN3eCA51C1EWMzMCezCBBmkxVIVHBWd3HHl9JQOIJSdSnJ0TDKChCwUJjoWMPaGqDKannasMo6WnM562R5YluZRwur0wpgqZE7NKUm%2BFNRPIhjBJxKZteWuIBMN4zRMIVIhffcgojwCF117i4nlLnY5ztRLsnOk%2BaV%2BoJY7V7m76PdkS4trKcdg0Zc0tTcKkRAAAIfkECQoAAAAsAAAAACAAIAAABO4QyEkpKqjqzScpRaVkXZWQEximw1BSCUEIlDohrft6cpKCk5xid5MNJTaAIkekKGQkWyKHkvhKsR7ARmitkAYDYRIbUQRQjWBwJRzChi9CRlBcY1UN4g0%2FVNB0AlcvcAYHRyZPdEQFYV8ccwR5HWxEJ02YmRMLnJ1xCYp0Y5idpQuhopmmC2KgojKasUQDk5BNAwwMOh2RtRq5uQuPZKGIJQIGwAwGf6I0JXMpC8C7kXWDBINFMxS4DKMAWVWAGYsAdNqW5uaRxkSKJOZKaU3tPOBZ4DuK2LATgJhkPJMgTwKCdFjyPHEnKxFCDhEAACH5BAkKAAAALAAAAAAgACAAAATzEMhJaVKp6s2nIkolIJ2WkBShpkVRWqqQrhLSEu9MZJKK9y1ZrqYK9WiClmvoUaF8gIQSNeF1Er4MNFn4SRSDARWroAIETg1iVwuHjYB1kYc1mwruwXKC9gmsJXliGxc%2BXiUCby9ydh1sOSdMkpMTBpaXBzsfhoc5l58Gm5yToAaZhaOUqjkDgCWNHAULCwOLaTmzswadEqggQwgHuQsHIoZCHQMMQgQGubVEcxOPFAcMDAYUA85eWARmfSRQCdcMe0zeP1AAygwLlJtPNAAL19DARdPzBOWSm1brJBi45soRAWQAAkrQIykShQ9wVhHCwCQCACH5BAkKAAAALAAAAAAgACAAAATrEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiRMDjI0Fd30%2FiI2UA5GSS5UDj2l6NoqgOgN4gksEBgYFf0FDqKgHnyZ9OX8HrgYHdHpcHQULXAS2qKpENRg7eAMLC7kTBaixUYFkKAzWAAnLC7FLVxLWDBLKCwaKTULgEwbLA4hJtOkSBNqITT3xEgfLpBtzE%2FjiuL04RGEBgwWhShRgQExHBAAh%2BQQJCgAAACwAAAAAIAAgAAAE7xDISWlSqerNpyJKhWRdlSAVoVLCWk6JKlAqAavhO9UkUHsqlE6CwO1cRdCQ8iEIfzFVTzLdRAmZX3I2SfZiCqGk5dTESJeaOAlClzsJsqwiJwiqnFrb2nS9kmIcgEsjQydLiIlHehhpejaIjzh9eomSjZR%2BipslWIRLAgMDOR2DOqKogTB9pCUJBagDBXR6XB0EBkIIsaRsGGMMAxoDBgYHTKJiUYEGDAzHC9EACcUGkIgFzgwZ0QsSBcXHiQvOwgDdEwfFs0sDzt4S6BK4xYjkDOzn0unFeBzOBijIm1Dgmg5YFQwsCMjp1oJ8LyIAACH5BAkKAAAALAAAAAAgACAAAATwEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiUd6GGl6NoiPOH16iZKNlH6KmyWFOggHhEEvAwwMA0N9GBsEC6amhnVcEwavDAazGwIDaH1ipaYLBUTCGgQDA8NdHz0FpqgTBwsLqAbWAAnIA4FWKdMLGdYGEgraigbT0OITBcg5QwPT4xLrROZL6AuQAPUS7bxLpoWidY0JtxLHKhwwMJBTHgPKdEQAACH5BAkKAAAALAAAAAAgACAAAATrEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiUd6GAULDJCRiXo1CpGXDJOUjY%2BYip9DhToJA4RBLwMLCwVDfRgbBAaqqoZ1XBMHswsHtxtFaH1iqaoGNgAIxRpbFAgfPQSqpbgGBqUD1wBXeCYp1AYZ19JJOYgH1KwA4UBvQwXUBxPqVD9L3sbp2BNk2xvvFPJd%2BMFCN6HAAIKgNggY0KtEBAAh%2BQQJCgAAACwAAAAAIAAgAAAE6BDISWlSqerNpyJKhWRdlSAVoVLCWk6JKlAqAavhO9UkUHsqlE6CwO1cRdCQ8iEIfzFVTzLdRAmZX3I2SfYIDMaAFdTESJeaEDAIMxYFqrOUaNW4E4ObYcCXaiBVEgULe0NJaxxtYksjh2NLkZISgDgJhHthkpU4mW6blRiYmZOlh4JWkDqILwUGBnE6TYEbCgevr0N1gH4At7gHiRpFaLNrrq8HNgAJA70AWxQIH1%2BvsYMDAzZQPC9VCNkDWUhGkuE5PxJNwiUK4UfLzOlD4WvzAHaoG9nxPi5d%2BjYUqfAhhykOFwJWiAAAIfkECQoAAAAsAAAAACAAIAAABPAQyElpUqnqzaciSoVkXVUMFaFSwlpOCcMYlErAavhOMnNLNo8KsZsMZItJEIDIFSkLGQoQTNhIsFehRww2CQLKF0tYGKYSg%2BygsZIuNqJksKgbfgIGepNo2cIUB3V1B3IvNiBYNQaDSTtfhhx0CwVPI0UJe0%2Bbm4g5VgcGoqOcnjmjqDSdnhgEoamcsZuXO1aWQy8KAwOAuTYYGwi7w5h%2BKr0SJ8MFihpNbx%2B4Erq7BYBuzsdiH1jCAzoSfl0rVirNbRXlBBlLX%2BBP0XJLAPGzTkAuAOqb0WT5AH7OcdCm5B8TgRwSRKIHQtaLCwg1RAAAOwAAAAAAAAAAAA%3D%3D);
+ visibility: visible;
+ opacity: 0.6;
+ -webkit-transition: all 0.3s ease;
+ transition: all 0.3s ease; }
+
+.reveal .overlay header {
+ position: absolute;
+ left: 0;
+ top: 0;
+ width: 100%;
+ height: 40px;
+ z-index: 2;
+ border-bottom: 1px solid #222; }
+
+.reveal .overlay header a {
+ display: inline-block;
+ width: 40px;
+ height: 40px;
+ line-height: 36px;
+ padding: 0 10px;
+ float: right;
+ opacity: 0.6;
+ box-sizing: border-box; }
+
+.reveal .overlay header a:hover {
+ opacity: 1; }
+
+.reveal .overlay header a .icon {
+ display: inline-block;
+ width: 20px;
+ height: 20px;
+ background-position: 50% 50%;
+ background-size: 100%;
+ background-repeat: no-repeat; }
+
+.reveal .overlay header a.close .icon {
+ background-image: url(data:image/png;base64,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); }
+
+.reveal .overlay header a.external .icon {
+ background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAcElEQVRYR+2WSQoAIQwEzf8f7XiOMkUQxUPlGkM3hVmiQfQR9GYnH1SsAQlI4DiBqkCMoNb9y2e90IAEJPAcgdznU9+engMaeJ7Azh5Y1U67gAho4DqBqmB1buAf0MB1AlVBek83ZPkmJMGc1wAR+AAqod/B97TRpQAAAABJRU5ErkJggg==); }
+
+.reveal .overlay .viewport {
+ position: absolute;
+ display: -webkit-box;
+ display: -webkit-flex;
+ display: -ms-flexbox;
+ display: flex;
+ top: 40px;
+ right: 0;
+ bottom: 0;
+ left: 0; }
+
+.reveal .overlay.overlay-preview .viewport iframe {
+ width: 100%;
+ height: 100%;
+ max-width: 100%;
+ max-height: 100%;
+ border: 0;
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transition: all 0.3s ease;
+ transition: all 0.3s ease; }
+
+.reveal .overlay.overlay-preview.loaded .viewport iframe {
+ opacity: 1;
+ visibility: visible; }
+
+.reveal .overlay.overlay-preview.loaded .viewport-inner {
+ position: absolute;
+ z-index: -1;
+ left: 0;
+ top: 45%;
+ width: 100%;
+ text-align: center;
+ letter-spacing: normal; }
+
+.reveal .overlay.overlay-preview .x-frame-error {
+ opacity: 0;
+ -webkit-transition: opacity 0.3s ease 0.3s;
+ transition: opacity 0.3s ease 0.3s; }
+
+.reveal .overlay.overlay-preview.loaded .x-frame-error {
+ opacity: 1; }
+
+.reveal .overlay.overlay-preview.loaded .spinner {
+ opacity: 0;
+ visibility: hidden;
+ -webkit-transform: scale(0.2);
+ transform: scale(0.2); }
+
+.reveal .overlay.overlay-help .viewport {
+ overflow: auto;
+ color: #fff; }
+
+.reveal .overlay.overlay-help .viewport .viewport-inner {
+ width: 600px;
+ margin: auto;
+ padding: 20px 20px 80px 20px;
+ text-align: center;
+ letter-spacing: normal; }
+
+.reveal .overlay.overlay-help .viewport .viewport-inner .title {
+ font-size: 20px; }
+
+.reveal .overlay.overlay-help .viewport .viewport-inner table {
+ border: 1px solid #fff;
+ border-collapse: collapse;
+ font-size: 16px; }
+
+.reveal .overlay.overlay-help .viewport .viewport-inner table th,
+.reveal .overlay.overlay-help .viewport .viewport-inner table td {
+ width: 200px;
+ padding: 14px;
+ border: 1px solid #fff;
+ vertical-align: middle; }
+
+.reveal .overlay.overlay-help .viewport .viewport-inner table th {
+ padding-top: 20px;
+ padding-bottom: 20px; }
+
+/*********************************************
+ * PLAYBACK COMPONENT
+ *********************************************/
+.reveal .playback {
+ position: fixed;
+ left: 15px;
+ bottom: 20px;
+ z-index: 30;
+ cursor: pointer;
+ -webkit-transition: all 400ms ease;
+ transition: all 400ms ease; }
+
+.reveal.overview .playback {
+ opacity: 0;
+ visibility: hidden; }
+
+/*********************************************
+ * ROLLING LINKS
+ *********************************************/
+.reveal .roll {
+ display: inline-block;
+ line-height: 1.2;
+ overflow: hidden;
+ vertical-align: top;
+ -webkit-perspective: 400px;
+ perspective: 400px;
+ -webkit-perspective-origin: 50% 50%;
+ perspective-origin: 50% 50%; }
+
+.reveal .roll:hover {
+ background: none;
+ text-shadow: none; }
+
+.reveal .roll span {
+ display: block;
+ position: relative;
+ padding: 0 2px;
+ pointer-events: none;
+ -webkit-transition: all 400ms ease;
+ transition: all 400ms ease;
+ -webkit-transform-origin: 50% 0%;
+ transform-origin: 50% 0%;
+ -webkit-transform-style: preserve-3d;
+ transform-style: preserve-3d;
+ -webkit-backface-visibility: hidden;
+ backface-visibility: hidden; }
+
+.reveal .roll:hover span {
+ background: rgba(0, 0, 0, 0.5);
+ -webkit-transform: translate3d(0px, 0px, -45px) rotateX(90deg);
+ transform: translate3d(0px, 0px, -45px) rotateX(90deg); }
+
+.reveal .roll span:after {
+ content: attr(data-title);
+ display: block;
+ position: absolute;
+ left: 0;
+ top: 0;
+ padding: 0 2px;
+ -webkit-backface-visibility: hidden;
+ backface-visibility: hidden;
+ -webkit-transform-origin: 50% 0%;
+ transform-origin: 50% 0%;
+ -webkit-transform: translate3d(0px, 110%, 0px) rotateX(-90deg);
+ transform: translate3d(0px, 110%, 0px) rotateX(-90deg); }
+
+/*********************************************
+ * SPEAKER NOTES
+ *********************************************/
+.reveal aside.notes {
+ display: none; }
+
+.reveal .speaker-notes {
+ display: none;
+ position: absolute;
+ width: 70%;
+ max-height: 15%;
+ left: 15%;
+ bottom: 26px;
+ padding: 10px;
+ z-index: 1;
+ font-size: 18px;
+ line-height: 1.4;
+ color: #fff;
+ background-color: rgba(0, 0, 0, 0.5);
+ overflow: auto;
+ box-sizing: border-box;
+ text-align: left;
+ font-family: Helvetica, sans-serif;
+ -webkit-overflow-scrolling: touch; }
+
+.reveal .speaker-notes.visible:not(:empty) {
+ display: block; }
+
+@media screen and (max-width: 1024px) {
+ .reveal .speaker-notes {
+ font-size: 14px; } }
+
+@media screen and (max-width: 600px) {
+ .reveal .speaker-notes {
+ width: 90%;
+ left: 5%; } }
+
+/*********************************************
+ * ZOOM PLUGIN
+ *********************************************/
+.zoomed .reveal *,
+.zoomed .reveal *:before,
+.zoomed .reveal *:after {
+ -webkit-backface-visibility: visible !important;
+ backface-visibility: visible !important; }
+
+.zoomed .reveal .progress,
+.zoomed .reveal .controls {
+ opacity: 0; }
+
+.zoomed .reveal .roll span {
+ background: none; }
+
+.zoomed .reveal .roll span:after {
+ visibility: hidden; }
diff --git a/openlp/core/display/html/reveal.js b/openlp/core/display/html/reveal.js
new file mode 100644
index 000000000..69aeb391b
--- /dev/null
+++ b/openlp/core/display/html/reveal.js
@@ -0,0 +1,5121 @@
+/*!
+ * reveal.js
+ * http://lab.hakim.se/reveal-js
+ * MIT licensed
+ *
+ * Copyright (C) 2017 Hakim El Hattab, http://hakim.se
+ */
+(function( root, factory ) {
+ if( typeof define === 'function' && define.amd ) {
+ // AMD. Register as an anonymous module.
+ define( function() {
+ root.Reveal = factory();
+ return root.Reveal;
+ } );
+ } else if( typeof exports === 'object' ) {
+ // Node. Does not work with strict CommonJS.
+ module.exports = factory();
+ } else {
+ // Browser globals.
+ root.Reveal = factory();
+ }
+}( this, function() {
+
+ 'use strict';
+
+ var Reveal;
+
+ // The reveal.js version
+ var VERSION = '3.5.0';
+
+ var SLIDES_SELECTOR = '.slides section',
+ HORIZONTAL_SLIDES_SELECTOR = '.slides>section',
+ VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section',
+ HOME_SLIDE_SELECTOR = '.slides>section:first-of-type',
+ UA = navigator.userAgent,
+
+ // Configuration defaults, can be overridden at initialization time
+ config = {
+
+ // The "normal" size of the presentation, aspect ratio will be preserved
+ // when the presentation is scaled to fit different resolutions
+ width: 960,
+ height: 700,
+
+ // Factor of the display size that should remain empty around the content
+ margin: 0.04,
+
+ // Bounds for smallest/largest possible scale to apply to content
+ minScale: 0.2,
+ maxScale: 2.0,
+
+ // Display controls in the bottom right corner
+ controls: true,
+
+ // Display a presentation progress bar
+ progress: true,
+
+ // Display the page number of the current slide
+ slideNumber: false,
+
+ // Determine which displays to show the slide number on
+ showSlideNumber: 'all',
+
+ // Push each slide change to the browser history
+ history: false,
+
+ // Enable keyboard shortcuts for navigation
+ keyboard: true,
+
+ // Optional function that blocks keyboard events when retuning false
+ keyboardCondition: null,
+
+ // Enable the slide overview mode
+ overview: true,
+
+ // Vertical centering of slides
+ center: true,
+
+ // Enables touch navigation on devices with touch input
+ touch: true,
+
+ // Loop the presentation
+ loop: false,
+
+ // Change the presentation direction to be RTL
+ rtl: false,
+
+ // Randomizes the order of slides each time the presentation loads
+ shuffle: false,
+
+ // Turns fragments on and off globally
+ fragments: true,
+
+ // Flags if the presentation is running in an embedded mode,
+ // i.e. contained within a limited portion of the screen
+ embedded: false,
+
+ // Flags if we should show a help overlay when the question-mark
+ // key is pressed
+ help: true,
+
+ // Flags if it should be possible to pause the presentation (blackout)
+ pause: true,
+
+ // Flags if speaker notes should be visible to all viewers
+ showNotes: false,
+
+ // Global override for autolaying embedded media (video/audio/iframe)
+ // - null: Media will only autoplay if data-autoplay is present
+ // - true: All media will autoplay, regardless of individual setting
+ // - false: No media will autoplay, regardless of individual setting
+ autoPlayMedia: null,
+
+ // Number of milliseconds between automatically proceeding to the
+ // next slide, disabled when set to 0, this value can be overwritten
+ // by using a data-autoslide attribute on your slides
+ autoSlide: 0,
+
+ // Stop auto-sliding after user input
+ autoSlideStoppable: true,
+
+ // Use this method for navigation when auto-sliding (defaults to navigateNext)
+ autoSlideMethod: null,
+
+ // Enable slide navigation via mouse wheel
+ mouseWheel: false,
+
+ // Apply a 3D roll to links on hover
+ rollingLinks: false,
+
+ // Hides the address bar on mobile devices
+ hideAddressBar: true,
+
+ // Opens links in an iframe preview overlay
+ previewLinks: false,
+
+ // Exposes the reveal.js API through window.postMessage
+ postMessage: true,
+
+ // Dispatches all reveal.js events to the parent window through postMessage
+ postMessageEvents: false,
+
+ // Focuses body when page changes visibility to ensure keyboard shortcuts work
+ focusBodyOnPageVisibilityChange: true,
+
+ // Transition style
+ transition: 'slide', // none/fade/slide/convex/concave/zoom
+
+ // Transition speed
+ transitionSpeed: 'default', // default/fast/slow
+
+ // Transition style for full page slide backgrounds
+ backgroundTransition: 'fade', // none/fade/slide/convex/concave/zoom
+
+ // Parallax background image
+ parallaxBackgroundImage: '', // CSS syntax, e.g. "a.jpg"
+
+ // Parallax background size
+ parallaxBackgroundSize: '', // CSS syntax, e.g. "3000px 2000px"
+
+ // Amount of pixels to move the parallax background per slide step
+ parallaxBackgroundHorizontal: null,
+ parallaxBackgroundVertical: null,
+
+ // The maximum number of pages a single slide can expand onto when printing
+ // to PDF, unlimited by default
+ pdfMaxPagesPerSlide: Number.POSITIVE_INFINITY,
+
+ // Offset used to reduce the height of content within exported PDF pages.
+ // This exists to account for environment differences based on how you
+ // print to PDF. CLI printing options, like phantomjs and wkpdf, can end
+ // on precisely the total height of the document whereas in-browser
+ // printing has to end one pixel before.
+ pdfPageHeightOffset: -1,
+
+ // Number of slides away from the current that are visible
+ viewDistance: 3,
+
+ // The display mode that will be used to show slides
+ display: 'block',
+
+ // Script dependencies to load
+ dependencies: []
+
+ },
+
+ // Flags if Reveal.initialize() has been called
+ initialized = false,
+
+ // Flags if reveal.js is loaded (has dispatched the 'ready' event)
+ loaded = false,
+
+ // Flags if the overview mode is currently active
+ overview = false,
+
+ // Holds the dimensions of our overview slides, including margins
+ overviewSlideWidth = null,
+ overviewSlideHeight = null,
+
+ // The horizontal and vertical index of the currently active slide
+ indexh,
+ indexv,
+
+ // The previous and current slide HTML elements
+ previousSlide,
+ currentSlide,
+
+ previousBackground,
+
+ // Slides may hold a data-state attribute which we pick up and apply
+ // as a class to the body. This list contains the combined state of
+ // all current slides.
+ state = [],
+
+ // The current scale of the presentation (see width/height config)
+ scale = 1,
+
+ // CSS transform that is currently applied to the slides container,
+ // split into two groups
+ slidesTransform = { layout: '', overview: '' },
+
+ // Cached references to DOM elements
+ dom = {},
+
+ // Features supported by the browser, see #checkCapabilities()
+ features = {},
+
+ // Client is a mobile device, see #checkCapabilities()
+ isMobileDevice,
+
+ // Client is a desktop Chrome, see #checkCapabilities()
+ isChrome,
+
+ // Throttles mouse wheel navigation
+ lastMouseWheelStep = 0,
+
+ // Delays updates to the URL due to a Chrome thumbnailer bug
+ writeURLTimeout = 0,
+
+ // Flags if the interaction event listeners are bound
+ eventsAreBound = false,
+
+ // The current auto-slide duration
+ autoSlide = 0,
+
+ // Auto slide properties
+ autoSlidePlayer,
+ autoSlideTimeout = 0,
+ autoSlideStartTime = -1,
+ autoSlidePaused = false,
+
+ // Holds information about the currently ongoing touch input
+ touch = {
+ startX: 0,
+ startY: 0,
+ startSpan: 0,
+ startCount: 0,
+ captured: false,
+ threshold: 40
+ },
+
+ // Holds information about the keyboard shortcuts
+ keyboardShortcuts = {
+ 'N , SPACE': 'Next slide',
+ 'P': 'Previous slide',
+ '← , H': 'Navigate left',
+ '→ , L': 'Navigate right',
+ '↑ , K': 'Navigate up',
+ '↓ , J': 'Navigate down',
+ 'Home': 'First slide',
+ 'End': 'Last slide',
+ 'B , .': 'Pause',
+ 'F': 'Fullscreen',
+ 'ESC, O': 'Slide overview'
+ };
+
+ /**
+ * Starts up the presentation if the client is capable.
+ */
+ function initialize( options ) {
+
+ // Make sure we only initialize once
+ if( initialized === true ) return;
+
+ initialized = true;
+
+ checkCapabilities();
+
+ if( !features.transforms2d && !features.transforms3d ) {
+ document.body.setAttribute( 'class', 'no-transforms' );
+
+ // Since JS won't be running any further, we load all lazy
+ // loading elements upfront
+ var images = toArray( document.getElementsByTagName( 'img' ) ),
+ iframes = toArray( document.getElementsByTagName( 'iframe' ) );
+
+ var lazyLoadable = images.concat( iframes );
+
+ for( var i = 0, len = lazyLoadable.length; i < len; i++ ) {
+ var element = lazyLoadable[i];
+ if( element.getAttribute( 'data-src' ) ) {
+ element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
+ element.removeAttribute( 'data-src' );
+ }
+ }
+
+ // If the browser doesn't support core features we won't be
+ // using JavaScript to control the presentation
+ return;
+ }
+
+ // Cache references to key DOM elements
+ dom.wrapper = document.querySelector( '.reveal' );
+ dom.slides = document.querySelector( '.reveal .slides' );
+
+ // Force a layout when the whole page, incl fonts, has loaded
+ window.addEventListener( 'load', layout, false );
+
+ var query = Reveal.getQueryHash();
+
+ // Do not accept new dependencies via query config to avoid
+ // the potential of malicious script injection
+ if( typeof query['dependencies'] !== 'undefined' ) delete query['dependencies'];
+
+ // Copy options over to our config object
+ extend( config, options );
+ extend( config, query );
+
+ // Hide the address bar in mobile browsers
+ hideAddressBar();
+
+ // Loads the dependencies and continues to #start() once done
+ load();
+
+ }
+
+ /**
+ * Restarts up the presentation if the client is capable.
+ */
+ function reinitialize() {
+ initialized = false;
+ initialize(config);
+ }
+
+ /**
+ * Inspect the client to see what it's capable of, this
+ * should only happens once per runtime.
+ */
+ function checkCapabilities() {
+
+ isMobileDevice = /(iphone|ipod|ipad|android)/gi.test( UA );
+ isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
+
+ var testElement = document.createElement( 'div' );
+
+ features.transforms3d = 'WebkitPerspective' in testElement.style ||
+ 'MozPerspective' in testElement.style ||
+ 'msPerspective' in testElement.style ||
+ 'OPerspective' in testElement.style ||
+ 'perspective' in testElement.style;
+
+ features.transforms2d = 'WebkitTransform' in testElement.style ||
+ 'MozTransform' in testElement.style ||
+ 'msTransform' in testElement.style ||
+ 'OTransform' in testElement.style ||
+ 'transform' in testElement.style;
+
+ features.requestAnimationFrameMethod = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame;
+ features.requestAnimationFrame = typeof features.requestAnimationFrameMethod === 'function';
+
+ features.canvas = !!document.createElement( 'canvas' ).getContext;
+
+ // Transitions in the overview are disabled in desktop and
+ // Safari due to lag
+ features.overviewTransitions = !/Version\/[\d\.]+.*Safari/.test( UA );
+
+ // Flags if we should use zoom instead of transform to scale
+ // up slides. Zoom produces crisper results but has a lot of
+ // xbrowser quirks so we only use it in whitelsited browsers.
+ features.zoom = 'zoom' in testElement.style && !isMobileDevice &&
+ ( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) );
+
+ }
+
+ /**
+ * Loads the dependencies of reveal.js. Dependencies are
+ * defined via the configuration option 'dependencies'
+ * and will be loaded prior to starting/binding reveal.js.
+ * Some dependencies may have an 'async' flag, if so they
+ * will load after reveal.js has been started up.
+ */
+ function load() {
+
+ var scripts = [],
+ scriptsAsync = [],
+ scriptsToPreload = 0;
+
+ // Called once synchronous scripts finish loading
+ function proceed() {
+ if( scriptsAsync.length ) {
+ // Load asynchronous scripts
+ head.js.apply( null, scriptsAsync );
+ }
+
+ start();
+ }
+
+ function loadScript( s ) {
+ head.ready( s.src.match( /([\w\d_\-]*)\.?js$|[^\\\/]*$/i )[0], function() {
+ // Extension may contain callback functions
+ if( typeof s.callback === 'function' ) {
+ s.callback.apply( this );
+ }
+
+ if( --scriptsToPreload === 0 ) {
+ proceed();
+ }
+ });
+ }
+
+ for( var i = 0, len = config.dependencies.length; i < len; i++ ) {
+ var s = config.dependencies[i];
+
+ // Load if there's no condition or the condition is truthy
+ if( !s.condition || s.condition() ) {
+ if( s.async ) {
+ scriptsAsync.push( s.src );
+ }
+ else {
+ scripts.push( s.src );
+ }
+
+ loadScript( s );
+ }
+ }
+
+ if( scripts.length ) {
+ scriptsToPreload = scripts.length;
+
+ // Load synchronous scripts
+ head.js.apply( null, scripts );
+ }
+ else {
+ proceed();
+ }
+
+ }
+
+ /**
+ * Starts up reveal.js by binding input events and navigating
+ * to the current URL deeplink if there is one.
+ */
+ function start() {
+
+ // Make sure we've got all the DOM elements we need
+ setupDOM();
+
+ // Listen to messages posted to this window
+ setupPostMessage();
+
+ // Prevent the slides from being scrolled out of view
+ setupScrollPrevention();
+
+ // Resets all vertical slides so that only the first is visible
+ resetVerticalSlides();
+
+ // Updates the presentation to match the current configuration values
+ configure();
+
+ // Read the initial hash
+ readURL();
+
+ // Update all backgrounds
+ updateBackground( true );
+
+ // Notify listeners that the presentation is ready but use a 1ms
+ // timeout to ensure it's not fired synchronously after #initialize()
+ setTimeout( function() {
+ // Enable transitions now that we're loaded
+ dom.slides.classList.remove( 'no-transition' );
+
+ loaded = true;
+
+ dom.wrapper.classList.add( 'ready' );
+
+ dispatchEvent( 'ready', {
+ 'indexh': indexh,
+ 'indexv': indexv,
+ 'currentSlide': currentSlide
+ } );
+ }, 1 );
+
+ // Special setup and config is required when printing to PDF
+ if( isPrintingPDF() ) {
+ removeEventListeners();
+
+ // The document needs to have loaded for the PDF layout
+ // measurements to be accurate
+ if( document.readyState === 'complete' ) {
+ setupPDF();
+ }
+ else {
+ window.addEventListener( 'load', setupPDF );
+ }
+ }
+
+ }
+
+ /**
+ * Finds and stores references to DOM elements which are
+ * required by the presentation. If a required element is
+ * not found, it is created.
+ */
+ function setupDOM() {
+
+ // Prevent transitions while we're loading
+ dom.slides.classList.add( 'no-transition' );
+
+ // Background element
+ dom.background = createSingletonNode( dom.wrapper, 'div', 'backgrounds', null );
+
+ // Progress bar
+ dom.progress = createSingletonNode( dom.wrapper, 'div', 'progress', '' );
+ dom.progressbar = dom.progress.querySelector( 'span' );
+
+ // Arrow controls
+ createSingletonNode( dom.wrapper, 'aside', 'controls',
+ '' +
+ '' +
+ '' +
+ '' );
+
+ // Slide number
+ dom.slideNumber = createSingletonNode( dom.wrapper, 'div', 'slide-number', '' );
+
+ // Element containing notes that are visible to the audience
+ dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null );
+ dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' );
+ dom.speakerNotes.setAttribute( 'tabindex', '0' );
+
+ // Overlay graphic which is displayed during the paused mode
+ createSingletonNode( dom.wrapper, 'div', 'pause-overlay', null );
+
+ // Cache references to elements
+ dom.controls = document.querySelector( '.reveal .controls' );
+
+ dom.wrapper.setAttribute( 'role', 'application' );
+
+ // There can be multiple instances of controls throughout the page
+ dom.controlsLeft = toArray( document.querySelectorAll( '.navigate-left' ) );
+ dom.controlsRight = toArray( document.querySelectorAll( '.navigate-right' ) );
+ dom.controlsUp = toArray( document.querySelectorAll( '.navigate-up' ) );
+ dom.controlsDown = toArray( document.querySelectorAll( '.navigate-down' ) );
+ dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) );
+ dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) );
+
+ dom.statusDiv = createStatusDiv();
+ }
+
+ /**
+ * Creates a hidden div with role aria-live to announce the
+ * current slide content. Hide the div off-screen to make it
+ * available only to Assistive Technologies.
+ *
+ * @return {HTMLElement}
+ */
+ function createStatusDiv() {
+
+ var statusDiv = document.getElementById( 'aria-status-div' );
+ if( !statusDiv ) {
+ statusDiv = document.createElement( 'div' );
+ statusDiv.style.position = 'absolute';
+ statusDiv.style.height = '1px';
+ statusDiv.style.width = '1px';
+ statusDiv.style.overflow = 'hidden';
+ statusDiv.style.clip = 'rect( 1px, 1px, 1px, 1px )';
+ statusDiv.setAttribute( 'id', 'aria-status-div' );
+ statusDiv.setAttribute( 'aria-live', 'polite' );
+ statusDiv.setAttribute( 'aria-atomic','true' );
+ dom.wrapper.appendChild( statusDiv );
+ }
+ return statusDiv;
+
+ }
+
+ /**
+ * Converts the given HTML element into a string of text
+ * that can be announced to a screen reader. Hidden
+ * elements are excluded.
+ */
+ function getStatusText( node ) {
+
+ var text = '';
+
+ // Text node
+ if( node.nodeType === 3 ) {
+ text += node.textContent;
+ }
+ // Element node
+ else if( node.nodeType === 1 ) {
+
+ var isAriaHidden = node.getAttribute( 'aria-hidden' );
+ var isDisplayHidden = window.getComputedStyle( node )['display'] === 'none';
+ if( isAriaHidden !== 'true' && !isDisplayHidden ) {
+
+ toArray( node.childNodes ).forEach( function( child ) {
+ text += getStatusText( child );
+ } );
+
+ }
+
+ }
+
+ return text;
+
+ }
+
+ /**
+ * Configures the presentation for printing to a static
+ * PDF.
+ */
+ function setupPDF() {
+
+ var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight );
+
+ // Dimensions of the PDF pages
+ var pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ),
+ pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) );
+
+ // Dimensions of slides within the pages
+ var slideWidth = slideSize.width,
+ slideHeight = slideSize.height;
+
+ // Let the browser know what page size we want to print
+ injectStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0px;}' );
+
+ // Limit the size of certain elements to the dimensions of the slide
+ injectStyleSheet( '.reveal section>img, .reveal section>video, .reveal section>iframe{max-width: '+ slideWidth +'px; max-height:'+ slideHeight +'px}' );
+
+ document.body.classList.add( 'print-pdf' );
+ document.body.style.width = pageWidth + 'px';
+ document.body.style.height = pageHeight + 'px';
+
+ // Make sure stretch elements fit on slide
+ layoutSlideContents( slideWidth, slideHeight );
+
+ // Add each slide's index as attributes on itself, we need these
+ // indices to generate slide numbers below
+ toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) {
+ hslide.setAttribute( 'data-index-h', h );
+
+ if( hslide.classList.contains( 'stack' ) ) {
+ toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) {
+ vslide.setAttribute( 'data-index-h', h );
+ vslide.setAttribute( 'data-index-v', v );
+ } );
+ }
+ } );
+
+ // Slide and slide background layout
+ toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
+
+ // Vertical stacks are not centred since their section
+ // children will be
+ if( slide.classList.contains( 'stack' ) === false ) {
+ // Center the slide inside of the page, giving the slide some margin
+ var left = ( pageWidth - slideWidth ) / 2,
+ top = ( pageHeight - slideHeight ) / 2;
+
+ var contentHeight = slide.scrollHeight;
+ var numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 );
+
+ // Adhere to configured pages per slide limit
+ numberOfPages = Math.min( numberOfPages, config.pdfMaxPagesPerSlide );
+
+ // Center slides vertically
+ if( numberOfPages === 1 && config.center || slide.classList.contains( 'center' ) ) {
+ top = Math.max( ( pageHeight - contentHeight ) / 2, 0 );
+ }
+
+ // Wrap the slide in a page element and hide its overflow
+ // so that no page ever flows onto another
+ var page = document.createElement( 'div' );
+ page.className = 'pdf-page';
+ page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px';
+ slide.parentNode.insertBefore( page, slide );
+ page.appendChild( slide );
+
+ // Position the slide inside of the page
+ slide.style.left = left + 'px';
+ slide.style.top = top + 'px';
+ slide.style.width = slideWidth + 'px';
+
+ if( slide.slideBackgroundElement ) {
+ page.insertBefore( slide.slideBackgroundElement, slide );
+ }
+
+ // Inject notes if `showNotes` is enabled
+ if( config.showNotes ) {
+
+ // Are there notes for this slide?
+ var notes = getSlideNotes( slide );
+ if( notes ) {
+
+ var notesSpacing = 8;
+ var notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline';
+ var notesElement = document.createElement( 'div' );
+ notesElement.classList.add( 'speaker-notes' );
+ notesElement.classList.add( 'speaker-notes-pdf' );
+ notesElement.setAttribute( 'data-layout', notesLayout );
+ notesElement.innerHTML = notes;
+
+ if( notesLayout === 'separate-page' ) {
+ page.parentNode.insertBefore( notesElement, page.nextSibling );
+ }
+ else {
+ notesElement.style.left = notesSpacing + 'px';
+ notesElement.style.bottom = notesSpacing + 'px';
+ notesElement.style.width = ( pageWidth - notesSpacing*2 ) + 'px';
+ page.appendChild( notesElement );
+ }
+
+ }
+
+ }
+
+ // Inject slide numbers if `slideNumbers` are enabled
+ if( config.slideNumber && /all|print/i.test( config.showSlideNumber ) ) {
+ var slideNumberH = parseInt( slide.getAttribute( 'data-index-h' ), 10 ) + 1,
+ slideNumberV = parseInt( slide.getAttribute( 'data-index-v' ), 10 ) + 1;
+
+ var numberElement = document.createElement( 'div' );
+ numberElement.classList.add( 'slide-number' );
+ numberElement.classList.add( 'slide-number-pdf' );
+ numberElement.innerHTML = formatSlideNumber( slideNumberH, '.', slideNumberV );
+ page.appendChild( numberElement );
+ }
+ }
+
+ } );
+
+ // Show all fragments
+ toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' .fragment' ) ).forEach( function( fragment ) {
+ fragment.classList.add( 'visible' );
+ } );
+
+ // Notify subscribers that the PDF layout is good to go
+ dispatchEvent( 'pdf-ready' );
+
+ }
+
+ /**
+ * This is an unfortunate necessity. Some actions – such as
+ * an input field being focused in an iframe or using the
+ * keyboard to expand text selection beyond the bounds of
+ * a slide – can trigger our content to be pushed out of view.
+ * This scrolling can not be prevented by hiding overflow in
+ * CSS (we already do) so we have to resort to repeatedly
+ * checking if the slides have been offset :(
+ */
+ function setupScrollPrevention() {
+
+ setInterval( function() {
+ if( dom.wrapper.scrollTop !== 0 || dom.wrapper.scrollLeft !== 0 ) {
+ dom.wrapper.scrollTop = 0;
+ dom.wrapper.scrollLeft = 0;
+ }
+ }, 1000 );
+
+ }
+
+ /**
+ * Creates an HTML element and returns a reference to it.
+ * If the element already exists the existing instance will
+ * be returned.
+ *
+ * @param {HTMLElement} container
+ * @param {string} tagname
+ * @param {string} classname
+ * @param {string} innerHTML
+ *
+ * @return {HTMLElement}
+ */
+ function createSingletonNode( container, tagname, classname, innerHTML ) {
+
+ // Find all nodes matching the description
+ var nodes = container.querySelectorAll( '.' + classname );
+
+ // Check all matches to find one which is a direct child of
+ // the specified container
+ for( var i = 0; i < nodes.length; i++ ) {
+ var testNode = nodes[i];
+ if( testNode.parentNode === container ) {
+ return testNode;
+ }
+ }
+
+ // If no node was found, create it now
+ var node = document.createElement( tagname );
+ node.classList.add( classname );
+ if( typeof innerHTML === 'string' ) {
+ node.innerHTML = innerHTML;
+ }
+ container.appendChild( node );
+
+ return node;
+
+ }
+
+ /**
+ * Creates the slide background elements and appends them
+ * to the background container. One element is created per
+ * slide no matter if the given slide has visible background.
+ */
+ function createBackgrounds() {
+
+ var printMode = isPrintingPDF();
+
+ // Clear prior backgrounds
+ dom.background.innerHTML = '';
+ dom.background.classList.add( 'no-transition' );
+
+ // Iterate over all horizontal slides
+ toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) {
+
+ var backgroundStack = createBackground( slideh, dom.background );
+
+ // Iterate over all vertical slides
+ toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) {
+
+ createBackground( slidev, backgroundStack );
+
+ backgroundStack.classList.add( 'stack' );
+
+ } );
+
+ } );
+
+ // Add parallax background if specified
+ if( config.parallaxBackgroundImage ) {
+
+ dom.background.style.backgroundImage = 'url("' + config.parallaxBackgroundImage + '")';
+ dom.background.style.backgroundSize = config.parallaxBackgroundSize;
+
+ // Make sure the below properties are set on the element - these properties are
+ // needed for proper transitions to be set on the element via CSS. To remove
+ // annoying background slide-in effect when the presentation starts, apply
+ // these properties after short time delay
+ setTimeout( function() {
+ dom.wrapper.classList.add( 'has-parallax-background' );
+ }, 1 );
+
+ }
+ else {
+
+ dom.background.style.backgroundImage = '';
+ dom.wrapper.classList.remove( 'has-parallax-background' );
+
+ }
+
+ }
+
+ /**
+ * Creates a background for the given slide.
+ *
+ * @param {HTMLElement} slide
+ * @param {HTMLElement} container The element that the background
+ * should be appended to
+ * @return {HTMLElement} New background div
+ */
+ function createBackground( slide, container ) {
+
+ var data = {
+ background: slide.getAttribute( 'data-background' ),
+ backgroundSize: slide.getAttribute( 'data-background-size' ),
+ backgroundImage: slide.getAttribute( 'data-background-image' ),
+ backgroundVideo: slide.getAttribute( 'data-background-video' ),
+ backgroundIframe: slide.getAttribute( 'data-background-iframe' ),
+ backgroundColor: slide.getAttribute( 'data-background-color' ),
+ backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
+ backgroundPosition: slide.getAttribute( 'data-background-position' ),
+ backgroundTransition: slide.getAttribute( 'data-background-transition' )
+ };
+
+ var element = document.createElement( 'div' );
+
+ // Carry over custom classes from the slide to the background
+ element.className = 'slide-background ' + slide.className.replace( /present|past|future/, '' );
+
+ if( data.background ) {
+ // Auto-wrap image urls in url(...)
+ if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)([?#]|$)/gi.test( data.background ) ) {
+ slide.setAttribute( 'data-background-image', data.background );
+ }
+ else {
+ element.style.background = data.background;
+ }
+ }
+
+ // Create a hash for this combination of background settings.
+ // This is used to determine when two slide backgrounds are
+ // the same.
+ if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
+ element.setAttribute( 'data-background-hash', data.background +
+ data.backgroundSize +
+ data.backgroundImage +
+ data.backgroundVideo +
+ data.backgroundIframe +
+ data.backgroundColor +
+ data.backgroundRepeat +
+ data.backgroundPosition +
+ data.backgroundTransition );
+ }
+
+ // Additional and optional background properties
+ if( data.backgroundSize ) element.style.backgroundSize = data.backgroundSize;
+ if( data.backgroundSize ) element.setAttribute( 'data-background-size', data.backgroundSize );
+ if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor;
+ if( data.backgroundRepeat ) element.style.backgroundRepeat = data.backgroundRepeat;
+ if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition;
+ if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );
+
+ container.appendChild( element );
+
+ // If backgrounds are being recreated, clear old classes
+ slide.classList.remove( 'has-dark-background' );
+ slide.classList.remove( 'has-light-background' );
+
+ slide.slideBackgroundElement = element;
+
+ // If this slide has a background color, add a class that
+ // signals if it is light or dark. If the slide has no background
+ // color, no class will be set
+ var computedBackgroundStyle = window.getComputedStyle( element );
+ if( computedBackgroundStyle && computedBackgroundStyle.backgroundColor ) {
+ var rgb = colorToRgb( computedBackgroundStyle.backgroundColor );
+
+ // Ignore fully transparent backgrounds. Some browsers return
+ // rgba(0,0,0,0) when reading the computed background color of
+ // an element with no background
+ if( rgb && rgb.a !== 0 ) {
+ if( colorBrightness( computedBackgroundStyle.backgroundColor ) < 128 ) {
+ slide.classList.add( 'has-dark-background' );
+ }
+ else {
+ slide.classList.add( 'has-light-background' );
+ }
+ }
+ }
+
+ return element;
+
+ }
+
+ /**
+ * Registers a listener to postMessage events, this makes it
+ * possible to call all reveal.js API methods from another
+ * window. For example:
+ *
+ * revealWindow.postMessage( JSON.stringify({
+ * method: 'slide',
+ * args: [ 2 ]
+ * }), '*' );
+ */
+ function setupPostMessage() {
+
+ if( config.postMessage ) {
+ window.addEventListener( 'message', function ( event ) {
+ var data = event.data;
+
+ // Make sure we're dealing with JSON
+ if( typeof data === 'string' && data.charAt( 0 ) === '{' && data.charAt( data.length - 1 ) === '}' ) {
+ data = JSON.parse( data );
+
+ // Check if the requested method can be found
+ if( data.method && typeof Reveal[data.method] === 'function' ) {
+ Reveal[data.method].apply( Reveal, data.args );
+ }
+ }
+ }, false );
+ }
+
+ }
+
+ /**
+ * Applies the configuration settings from the config
+ * object. May be called multiple times.
+ *
+ * @param {object} options
+ */
+ function configure( options ) {
+
+ var numberOfSlides = dom.wrapper.querySelectorAll( SLIDES_SELECTOR ).length;
+
+ dom.wrapper.classList.remove( config.transition );
+
+ // New config options may be passed when this method
+ // is invoked through the API after initialization
+ if( typeof options === 'object' ) extend( config, options );
+
+ // Force linear transition based on browser capabilities
+ if( features.transforms3d === false ) config.transition = 'linear';
+
+ dom.wrapper.classList.add( config.transition );
+
+ dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed );
+ dom.wrapper.setAttribute( 'data-background-transition', config.backgroundTransition );
+
+ dom.controls.style.display = config.controls ? 'block' : 'none';
+ dom.progress.style.display = config.progress ? 'block' : 'none';
+
+ if( config.shuffle ) {
+ shuffle();
+ }
+
+ if( config.rtl ) {
+ dom.wrapper.classList.add( 'rtl' );
+ }
+ else {
+ dom.wrapper.classList.remove( 'rtl' );
+ }
+
+ if( config.center ) {
+ dom.wrapper.classList.add( 'center' );
+ }
+ else {
+ dom.wrapper.classList.remove( 'center' );
+ }
+
+ // Exit the paused mode if it was configured off
+ if( config.pause === false ) {
+ resume();
+ }
+
+ if( config.showNotes ) {
+ dom.speakerNotes.classList.add( 'visible' );
+ dom.speakerNotes.setAttribute( 'data-layout', typeof config.showNotes === 'string' ? config.showNotes : 'inline' );
+ }
+ else {
+ dom.speakerNotes.classList.remove( 'visible' );
+ }
+
+ if( config.mouseWheel ) {
+ document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
+ document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
+ }
+ else {
+ document.removeEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
+ document.removeEventListener( 'mousewheel', onDocumentMouseScroll, false );
+ }
+
+ // Rolling 3D links
+ if( config.rollingLinks ) {
+ enableRollingLinks();
+ }
+ else {
+ disableRollingLinks();
+ }
+
+ // Iframe link previews
+ if( config.previewLinks ) {
+ enablePreviewLinks();
+ disablePreviewLinks( '[data-preview-link=false]' );
+ }
+ else {
+ disablePreviewLinks();
+ enablePreviewLinks( '[data-preview-link]:not([data-preview-link=false])' );
+ }
+
+ // Remove existing auto-slide controls
+ if( autoSlidePlayer ) {
+ autoSlidePlayer.destroy();
+ autoSlidePlayer = null;
+ }
+
+ // Generate auto-slide controls if needed
+ if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable && features.canvas && features.requestAnimationFrame ) {
+ autoSlidePlayer = new Playback( dom.wrapper, function() {
+ return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 );
+ } );
+
+ autoSlidePlayer.on( 'click', onAutoSlidePlayerClick );
+ autoSlidePaused = false;
+ }
+
+ // When fragments are turned off they should be visible
+ if( config.fragments === false ) {
+ toArray( dom.slides.querySelectorAll( '.fragment' ) ).forEach( function( element ) {
+ element.classList.add( 'visible' );
+ element.classList.remove( 'current-fragment' );
+ } );
+ }
+
+ // Slide numbers
+ var slideNumberDisplay = 'none';
+ if( config.slideNumber && !isPrintingPDF() ) {
+ if( config.showSlideNumber === 'all' ) {
+ slideNumberDisplay = 'block';
+ }
+ else if( config.showSlideNumber === 'speaker' && isSpeakerNotes() ) {
+ slideNumberDisplay = 'block';
+ }
+ }
+
+ dom.slideNumber.style.display = slideNumberDisplay;
+
+ sync();
+
+ }
+
+ /**
+ * Binds all event listeners.
+ */
+ function addEventListeners() {
+
+ eventsAreBound = true;
+
+ window.addEventListener( 'hashchange', onWindowHashChange, false );
+ window.addEventListener( 'resize', onWindowResize, false );
+
+ if( config.touch ) {
+ dom.wrapper.addEventListener( 'touchstart', onTouchStart, false );
+ dom.wrapper.addEventListener( 'touchmove', onTouchMove, false );
+ dom.wrapper.addEventListener( 'touchend', onTouchEnd, false );
+
+ // Support pointer-style touch interaction as well
+ if( window.navigator.pointerEnabled ) {
+ // IE 11 uses un-prefixed version of pointer events
+ dom.wrapper.addEventListener( 'pointerdown', onPointerDown, false );
+ dom.wrapper.addEventListener( 'pointermove', onPointerMove, false );
+ dom.wrapper.addEventListener( 'pointerup', onPointerUp, false );
+ }
+ else if( window.navigator.msPointerEnabled ) {
+ // IE 10 uses prefixed version of pointer events
+ dom.wrapper.addEventListener( 'MSPointerDown', onPointerDown, false );
+ dom.wrapper.addEventListener( 'MSPointerMove', onPointerMove, false );
+ dom.wrapper.addEventListener( 'MSPointerUp', onPointerUp, false );
+ }
+ }
+
+ if( config.keyboard ) {
+ document.addEventListener( 'keydown', onDocumentKeyDown, false );
+ document.addEventListener( 'keypress', onDocumentKeyPress, false );
+ }
+
+ if( config.progress && dom.progress ) {
+ dom.progress.addEventListener( 'click', onProgressClicked, false );
+ }
+
+ if( config.focusBodyOnPageVisibilityChange ) {
+ var visibilityChange;
+
+ if( 'hidden' in document ) {
+ visibilityChange = 'visibilitychange';
+ }
+ else if( 'msHidden' in document ) {
+ visibilityChange = 'msvisibilitychange';
+ }
+ else if( 'webkitHidden' in document ) {
+ visibilityChange = 'webkitvisibilitychange';
+ }
+
+ if( visibilityChange ) {
+ document.addEventListener( visibilityChange, onPageVisibilityChange, false );
+ }
+ }
+
+ // Listen to both touch and click events, in case the device
+ // supports both
+ var pointerEvents = [ 'touchstart', 'click' ];
+
+ // Only support touch for Android, fixes double navigations in
+ // stock browser
+ if( UA.match( /android/gi ) ) {
+ pointerEvents = [ 'touchstart' ];
+ }
+
+ pointerEvents.forEach( function( eventName ) {
+ dom.controlsLeft.forEach( function( el ) { el.addEventListener( eventName, onNavigateLeftClicked, false ); } );
+ dom.controlsRight.forEach( function( el ) { el.addEventListener( eventName, onNavigateRightClicked, false ); } );
+ dom.controlsUp.forEach( function( el ) { el.addEventListener( eventName, onNavigateUpClicked, false ); } );
+ dom.controlsDown.forEach( function( el ) { el.addEventListener( eventName, onNavigateDownClicked, false ); } );
+ dom.controlsPrev.forEach( function( el ) { el.addEventListener( eventName, onNavigatePrevClicked, false ); } );
+ dom.controlsNext.forEach( function( el ) { el.addEventListener( eventName, onNavigateNextClicked, false ); } );
+ } );
+
+ }
+
+ /**
+ * Unbinds all event listeners.
+ */
+ function removeEventListeners() {
+
+ eventsAreBound = false;
+
+ document.removeEventListener( 'keydown', onDocumentKeyDown, false );
+ document.removeEventListener( 'keypress', onDocumentKeyPress, false );
+ window.removeEventListener( 'hashchange', onWindowHashChange, false );
+ window.removeEventListener( 'resize', onWindowResize, false );
+
+ dom.wrapper.removeEventListener( 'touchstart', onTouchStart, false );
+ dom.wrapper.removeEventListener( 'touchmove', onTouchMove, false );
+ dom.wrapper.removeEventListener( 'touchend', onTouchEnd, false );
+
+ // IE11
+ if( window.navigator.pointerEnabled ) {
+ dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, false );
+ dom.wrapper.removeEventListener( 'pointermove', onPointerMove, false );
+ dom.wrapper.removeEventListener( 'pointerup', onPointerUp, false );
+ }
+ // IE10
+ else if( window.navigator.msPointerEnabled ) {
+ dom.wrapper.removeEventListener( 'MSPointerDown', onPointerDown, false );
+ dom.wrapper.removeEventListener( 'MSPointerMove', onPointerMove, false );
+ dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, false );
+ }
+
+ if ( config.progress && dom.progress ) {
+ dom.progress.removeEventListener( 'click', onProgressClicked, false );
+ }
+
+ [ 'touchstart', 'click' ].forEach( function( eventName ) {
+ dom.controlsLeft.forEach( function( el ) { el.removeEventListener( eventName, onNavigateLeftClicked, false ); } );
+ dom.controlsRight.forEach( function( el ) { el.removeEventListener( eventName, onNavigateRightClicked, false ); } );
+ dom.controlsUp.forEach( function( el ) { el.removeEventListener( eventName, onNavigateUpClicked, false ); } );
+ dom.controlsDown.forEach( function( el ) { el.removeEventListener( eventName, onNavigateDownClicked, false ); } );
+ dom.controlsPrev.forEach( function( el ) { el.removeEventListener( eventName, onNavigatePrevClicked, false ); } );
+ dom.controlsNext.forEach( function( el ) { el.removeEventListener( eventName, onNavigateNextClicked, false ); } );
+ } );
+
+ }
+
+ /**
+ * Extend object a with the properties of object b.
+ * If there's a conflict, object b takes precedence.
+ *
+ * @param {object} a
+ * @param {object} b
+ */
+ function extend( a, b ) {
+
+ for( var i in b ) {
+ a[ i ] = b[ i ];
+ }
+
+ }
+
+ /**
+ * Converts the target object to an array.
+ *
+ * @param {object} o
+ * @return {object[]}
+ */
+ function toArray( o ) {
+
+ return Array.prototype.slice.call( o );
+
+ }
+
+ /**
+ * Utility for deserializing a value.
+ *
+ * @param {*} value
+ * @return {*}
+ */
+ function deserialize( value ) {
+
+ if( typeof value === 'string' ) {
+ if( value === 'null' ) return null;
+ else if( value === 'true' ) return true;
+ else if( value === 'false' ) return false;
+ else if( value.match( /^[\d\.]+$/ ) ) return parseFloat( value );
+ }
+
+ return value;
+
+ }
+
+ /**
+ * Measures the distance in pixels between point a
+ * and point b.
+ *
+ * @param {object} a point with x/y properties
+ * @param {object} b point with x/y properties
+ *
+ * @return {number}
+ */
+ function distanceBetween( a, b ) {
+
+ var dx = a.x - b.x,
+ dy = a.y - b.y;
+
+ return Math.sqrt( dx*dx + dy*dy );
+
+ }
+
+ /**
+ * Applies a CSS transform to the target element.
+ *
+ * @param {HTMLElement} element
+ * @param {string} transform
+ */
+ function transformElement( element, transform ) {
+
+ element.style.WebkitTransform = transform;
+ element.style.MozTransform = transform;
+ element.style.msTransform = transform;
+ element.style.transform = transform;
+
+ }
+
+ /**
+ * Applies CSS transforms to the slides container. The container
+ * is transformed from two separate sources: layout and the overview
+ * mode.
+ *
+ * @param {object} transforms
+ */
+ function transformSlides( transforms ) {
+
+ // Pick up new transforms from arguments
+ if( typeof transforms.layout === 'string' ) slidesTransform.layout = transforms.layout;
+ if( typeof transforms.overview === 'string' ) slidesTransform.overview = transforms.overview;
+
+ // Apply the transforms to the slides container
+ if( slidesTransform.layout ) {
+ transformElement( dom.slides, slidesTransform.layout + ' ' + slidesTransform.overview );
+ }
+ else {
+ transformElement( dom.slides, slidesTransform.overview );
+ }
+
+ }
+
+ /**
+ * Injects the given CSS styles into the DOM.
+ *
+ * @param {string} value
+ */
+ function injectStyleSheet( value ) {
+
+ var tag = document.createElement( 'style' );
+ tag.type = 'text/css';
+ if( tag.styleSheet ) {
+ tag.styleSheet.cssText = value;
+ }
+ else {
+ tag.appendChild( document.createTextNode( value ) );
+ }
+ document.getElementsByTagName( 'head' )[0].appendChild( tag );
+
+ }
+
+ /**
+ * Find the closest parent that matches the given
+ * selector.
+ *
+ * @param {HTMLElement} target The child element
+ * @param {String} selector The CSS selector to match
+ * the parents against
+ *
+ * @return {HTMLElement} The matched parent or null
+ * if no matching parent was found
+ */
+ function closestParent( target, selector ) {
+
+ var parent = target.parentNode;
+
+ while( parent ) {
+
+ // There's some overhead doing this each time, we don't
+ // want to rewrite the element prototype but should still
+ // be enough to feature detect once at startup...
+ var matchesMethod = parent.matches || parent.matchesSelector || parent.msMatchesSelector;
+
+ // If we find a match, we're all set
+ if( matchesMethod && matchesMethod.call( parent, selector ) ) {
+ return parent;
+ }
+
+ // Keep searching
+ parent = parent.parentNode;
+
+ }
+
+ return null;
+
+ }
+
+ /**
+ * Converts various color input formats to an {r:0,g:0,b:0} object.
+ *
+ * @param {string} color The string representation of a color
+ * @example
+ * colorToRgb('#000');
+ * @example
+ * colorToRgb('#000000');
+ * @example
+ * colorToRgb('rgb(0,0,0)');
+ * @example
+ * colorToRgb('rgba(0,0,0)');
+ *
+ * @return {{r: number, g: number, b: number, [a]: number}|null}
+ */
+ function colorToRgb( color ) {
+
+ var hex3 = color.match( /^#([0-9a-f]{3})$/i );
+ if( hex3 && hex3[1] ) {
+ hex3 = hex3[1];
+ return {
+ r: parseInt( hex3.charAt( 0 ), 16 ) * 0x11,
+ g: parseInt( hex3.charAt( 1 ), 16 ) * 0x11,
+ b: parseInt( hex3.charAt( 2 ), 16 ) * 0x11
+ };
+ }
+
+ var hex6 = color.match( /^#([0-9a-f]{6})$/i );
+ if( hex6 && hex6[1] ) {
+ hex6 = hex6[1];
+ return {
+ r: parseInt( hex6.substr( 0, 2 ), 16 ),
+ g: parseInt( hex6.substr( 2, 2 ), 16 ),
+ b: parseInt( hex6.substr( 4, 2 ), 16 )
+ };
+ }
+
+ var rgb = color.match( /^rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/i );
+ if( rgb ) {
+ return {
+ r: parseInt( rgb[1], 10 ),
+ g: parseInt( rgb[2], 10 ),
+ b: parseInt( rgb[3], 10 )
+ };
+ }
+
+ var rgba = color.match( /^rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\,\s*([\d]+|[\d]*.[\d]+)\s*\)$/i );
+ if( rgba ) {
+ return {
+ r: parseInt( rgba[1], 10 ),
+ g: parseInt( rgba[2], 10 ),
+ b: parseInt( rgba[3], 10 ),
+ a: parseFloat( rgba[4] )
+ };
+ }
+
+ return null;
+
+ }
+
+ /**
+ * Calculates brightness on a scale of 0-255.
+ *
+ * @param {string} color See colorToRgb for supported formats.
+ * @see {@link colorToRgb}
+ */
+ function colorBrightness( color ) {
+
+ if( typeof color === 'string' ) color = colorToRgb( color );
+
+ if( color ) {
+ return ( color.r * 299 + color.g * 587 + color.b * 114 ) / 1000;
+ }
+
+ return null;
+
+ }
+
+ /**
+ * Returns the remaining height within the parent of the
+ * target element.
+ *
+ * remaining height = [ configured parent height ] - [ current parent height ]
+ *
+ * @param {HTMLElement} element
+ * @param {number} [height]
+ */
+ function getRemainingHeight( element, height ) {
+
+ height = height || 0;
+
+ if( element ) {
+ var newHeight, oldHeight = element.style.height;
+
+ // Change the .stretch element height to 0 in order find the height of all
+ // the other elements
+ element.style.height = '0px';
+ newHeight = height - element.parentNode.offsetHeight;
+
+ // Restore the old height, just in case
+ element.style.height = oldHeight + 'px';
+
+ return newHeight;
+ }
+
+ return height;
+
+ }
+
+ /**
+ * Checks if this instance is being used to print a PDF.
+ */
+ function isPrintingPDF() {
+
+ return ( /print-pdf/gi ).test( window.location.search );
+
+ }
+
+ /**
+ * Hides the address bar if we're on a mobile device.
+ */
+ function hideAddressBar() {
+
+ if( config.hideAddressBar && isMobileDevice ) {
+ // Events that should trigger the address bar to hide
+ window.addEventListener( 'load', removeAddressBar, false );
+ window.addEventListener( 'orientationchange', removeAddressBar, false );
+ }
+
+ }
+
+ /**
+ * Causes the address bar to hide on mobile devices,
+ * more vertical space ftw.
+ */
+ function removeAddressBar() {
+
+ setTimeout( function() {
+ window.scrollTo( 0, 1 );
+ }, 10 );
+
+ }
+
+ /**
+ * Dispatches an event of the specified type from the
+ * reveal DOM element.
+ */
+ function dispatchEvent( type, args ) {
+
+ var event = document.createEvent( 'HTMLEvents', 1, 2 );
+ event.initEvent( type, true, true );
+ extend( event, args );
+ dom.wrapper.dispatchEvent( event );
+
+ // If we're in an iframe, post each reveal.js event to the
+ // parent window. Used by the notes plugin
+ if( config.postMessageEvents && window.parent !== window.self ) {
+ window.parent.postMessage( JSON.stringify({ namespace: 'reveal', eventName: type, state: getState() }), '*' );
+ }
+
+ }
+
+ /**
+ * Wrap all links in 3D goodness.
+ */
+ function enableRollingLinks() {
+
+ if( features.transforms3d && !( 'msPerspective' in document.body.style ) ) {
+ var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a' );
+
+ for( var i = 0, len = anchors.length; i < len; i++ ) {
+ var anchor = anchors[i];
+
+ if( anchor.textContent && !anchor.querySelector( '*' ) && ( !anchor.className || !anchor.classList.contains( anchor, 'roll' ) ) ) {
+ var span = document.createElement('span');
+ span.setAttribute('data-title', anchor.text);
+ span.innerHTML = anchor.innerHTML;
+
+ anchor.classList.add( 'roll' );
+ anchor.innerHTML = '';
+ anchor.appendChild(span);
+ }
+ }
+ }
+
+ }
+
+ /**
+ * Unwrap all 3D links.
+ */
+ function disableRollingLinks() {
+
+ var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a.roll' );
+
+ for( var i = 0, len = anchors.length; i < len; i++ ) {
+ var anchor = anchors[i];
+ var span = anchor.querySelector( 'span' );
+
+ if( span ) {
+ anchor.classList.remove( 'roll' );
+ anchor.innerHTML = span.innerHTML;
+ }
+ }
+
+ }
+
+ /**
+ * Bind preview frame links.
+ *
+ * @param {string} [selector=a] - selector for anchors
+ */
+ function enablePreviewLinks( selector ) {
+
+ var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) );
+
+ anchors.forEach( function( element ) {
+ if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
+ element.addEventListener( 'click', onPreviewLinkClicked, false );
+ }
+ } );
+
+ }
+
+ /**
+ * Unbind preview frame links.
+ */
+ function disablePreviewLinks( selector ) {
+
+ var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) );
+
+ anchors.forEach( function( element ) {
+ if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
+ element.removeEventListener( 'click', onPreviewLinkClicked, false );
+ }
+ } );
+
+ }
+
+ /**
+ * Opens a preview window for the target URL.
+ *
+ * @param {string} url - url for preview iframe src
+ */
+ function showPreview( url ) {
+
+ closeOverlay();
+
+ dom.overlay = document.createElement( 'div' );
+ dom.overlay.classList.add( 'overlay' );
+ dom.overlay.classList.add( 'overlay-preview' );
+ dom.wrapper.appendChild( dom.overlay );
+
+ dom.overlay.innerHTML = [
+ '',
+ '',
+ '',
+ '',
+ '',
+ 'Unable to load iframe. This is likely due to the site\'s policy (x-frame-options).',
+ '',
+ '
'
+ ].join('');
+
+ dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', function( event ) {
+ dom.overlay.classList.add( 'loaded' );
+ }, false );
+
+ dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
+ closeOverlay();
+ event.preventDefault();
+ }, false );
+
+ dom.overlay.querySelector( '.external' ).addEventListener( 'click', function( event ) {
+ closeOverlay();
+ }, false );
+
+ setTimeout( function() {
+ dom.overlay.classList.add( 'visible' );
+ }, 1 );
+
+ }
+
+ /**
+ * Open or close help overlay window.
+ *
+ * @param {Boolean} [override] Flag which overrides the
+ * toggle logic and forcibly sets the desired state. True means
+ * help is open, false means it's closed.
+ */
+ function toggleHelp( override ){
+
+ if( typeof override === 'boolean' ) {
+ override ? showHelp() : closeOverlay();
+ }
+ else {
+ if( dom.overlay ) {
+ closeOverlay();
+ }
+ else {
+ showHelp();
+ }
+ }
+ }
+
+ /**
+ * Opens an overlay window with help material.
+ */
+ function showHelp() {
+
+ if( config.help ) {
+
+ closeOverlay();
+
+ dom.overlay = document.createElement( 'div' );
+ dom.overlay.classList.add( 'overlay' );
+ dom.overlay.classList.add( 'overlay-help' );
+ dom.wrapper.appendChild( dom.overlay );
+
+ var html = 'Keyboard Shortcuts
';
+
+ html += 'KEY | ACTION | ';
+ for( var key in keyboardShortcuts ) {
+ html += '' + key + ' | ' + keyboardShortcuts[ key ] + ' |
';
+ }
+
+ html += '
';
+
+ dom.overlay.innerHTML = [
+ '',
+ ''
+ ].join('');
+
+ dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
+ closeOverlay();
+ event.preventDefault();
+ }, false );
+
+ setTimeout( function() {
+ dom.overlay.classList.add( 'visible' );
+ }, 1 );
+
+ }
+
+ }
+
+ /**
+ * Closes any currently open overlay.
+ */
+ function closeOverlay() {
+
+ if( dom.overlay ) {
+ dom.overlay.parentNode.removeChild( dom.overlay );
+ dom.overlay = null;
+ }
+
+ }
+
+ /**
+ * Applies JavaScript-controlled layout rules to the
+ * presentation.
+ */
+ function layout() {
+
+ if( dom.wrapper && !isPrintingPDF() ) {
+
+ var size = getComputedSlideSize();
+
+ // Layout the contents of the slides
+ layoutSlideContents( config.width, config.height );
+
+ dom.slides.style.width = size.width + 'px';
+ dom.slides.style.height = size.height + 'px';
+
+ // Determine scale of content to fit within available space
+ scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height );
+
+ // Respect max/min scale settings
+ scale = Math.max( scale, config.minScale );
+ scale = Math.min( scale, config.maxScale );
+
+ // Don't apply any scaling styles if scale is 1
+ if( scale === 1 ) {
+ dom.slides.style.zoom = '';
+ dom.slides.style.left = '';
+ dom.slides.style.top = '';
+ dom.slides.style.bottom = '';
+ dom.slides.style.right = '';
+ transformSlides( { layout: '' } );
+ }
+ else {
+ // Prefer zoom for scaling up so that content remains crisp.
+ // Don't use zoom to scale down since that can lead to shifts
+ // in text layout/line breaks.
+ if( scale > 1 && features.zoom ) {
+ dom.slides.style.zoom = scale;
+ dom.slides.style.left = '';
+ dom.slides.style.top = '';
+ dom.slides.style.bottom = '';
+ dom.slides.style.right = '';
+ transformSlides( { layout: '' } );
+ }
+ // Apply scale transform as a fallback
+ else {
+ dom.slides.style.zoom = '';
+ dom.slides.style.left = '50%';
+ dom.slides.style.top = '50%';
+ dom.slides.style.bottom = 'auto';
+ dom.slides.style.right = 'auto';
+ transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } );
+ }
+ }
+
+ // Select all slides, vertical and horizontal
+ var slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) );
+
+ for( var i = 0, len = slides.length; i < len; i++ ) {
+ var slide = slides[ i ];
+
+ // Don't bother updating invisible slides
+ if( slide.style.display === 'none' ) {
+ continue;
+ }
+
+ if( config.center || slide.classList.contains( 'center' ) ) {
+ // Vertical stacks are not centred since their section
+ // children will be
+ if( slide.classList.contains( 'stack' ) ) {
+ slide.style.top = 0;
+ }
+ else {
+ slide.style.top = Math.max( ( size.height - slide.scrollHeight ) / 2, 0 ) + 'px';
+ }
+ }
+ else {
+ slide.style.top = '';
+ }
+
+ }
+
+ updateProgress();
+ updateParallax();
+
+ if( isOverview() ) {
+ updateOverview();
+ }
+
+ }
+
+ }
+
+ /**
+ * Applies layout logic to the contents of all slides in
+ * the presentation.
+ *
+ * @param {string|number} width
+ * @param {string|number} height
+ */
+ function layoutSlideContents( width, height ) {
+
+ // Handle sizing of elements with the 'stretch' class
+ toArray( dom.slides.querySelectorAll( 'section > .stretch' ) ).forEach( function( element ) {
+
+ // Determine how much vertical space we can use
+ var remainingHeight = getRemainingHeight( element, height );
+
+ // Consider the aspect ratio of media elements
+ if( /(img|video)/gi.test( element.nodeName ) ) {
+ var nw = element.naturalWidth || element.videoWidth,
+ nh = element.naturalHeight || element.videoHeight;
+
+ var es = Math.min( width / nw, remainingHeight / nh );
+
+ element.style.width = ( nw * es ) + 'px';
+ element.style.height = ( nh * es ) + 'px';
+
+ }
+ else {
+ element.style.width = width + 'px';
+ element.style.height = remainingHeight + 'px';
+ }
+
+ } );
+
+ }
+
+ /**
+ * Calculates the computed pixel size of our slides. These
+ * values are based on the width and height configuration
+ * options.
+ *
+ * @param {number} [presentationWidth=dom.wrapper.offsetWidth]
+ * @param {number} [presentationHeight=dom.wrapper.offsetHeight]
+ */
+ function getComputedSlideSize( presentationWidth, presentationHeight ) {
+
+ var size = {
+ // Slide size
+ width: config.width,
+ height: config.height,
+
+ // Presentation size
+ presentationWidth: presentationWidth || dom.wrapper.offsetWidth,
+ presentationHeight: presentationHeight || dom.wrapper.offsetHeight
+ };
+
+ // Reduce available space by margin
+ size.presentationWidth -= ( size.presentationWidth * config.margin );
+ size.presentationHeight -= ( size.presentationHeight * config.margin );
+
+ // Slide width may be a percentage of available width
+ if( typeof size.width === 'string' && /%$/.test( size.width ) ) {
+ size.width = parseInt( size.width, 10 ) / 100 * size.presentationWidth;
+ }
+
+ // Slide height may be a percentage of available height
+ if( typeof size.height === 'string' && /%$/.test( size.height ) ) {
+ size.height = parseInt( size.height, 10 ) / 100 * size.presentationHeight;
+ }
+
+ return size;
+
+ }
+
+ /**
+ * Stores the vertical index of a stack so that the same
+ * vertical slide can be selected when navigating to and
+ * from the stack.
+ *
+ * @param {HTMLElement} stack The vertical stack element
+ * @param {string|number} [v=0] Index to memorize
+ */
+ function setPreviousVerticalIndex( stack, v ) {
+
+ if( typeof stack === 'object' && typeof stack.setAttribute === 'function' ) {
+ stack.setAttribute( 'data-previous-indexv', v || 0 );
+ }
+
+ }
+
+ /**
+ * Retrieves the vertical index which was stored using
+ * #setPreviousVerticalIndex() or 0 if no previous index
+ * exists.
+ *
+ * @param {HTMLElement} stack The vertical stack element
+ */
+ function getPreviousVerticalIndex( stack ) {
+
+ if( typeof stack === 'object' && typeof stack.setAttribute === 'function' && stack.classList.contains( 'stack' ) ) {
+ // Prefer manually defined start-indexv
+ var attributeName = stack.hasAttribute( 'data-start-indexv' ) ? 'data-start-indexv' : 'data-previous-indexv';
+
+ return parseInt( stack.getAttribute( attributeName ) || 0, 10 );
+ }
+
+ return 0;
+
+ }
+
+ /**
+ * Displays the overview of slides (quick nav) by scaling
+ * down and arranging all slide elements.
+ */
+ function activateOverview() {
+
+ // Only proceed if enabled in config
+ if( config.overview && !isOverview() ) {
+
+ overview = true;
+
+ dom.wrapper.classList.add( 'overview' );
+ dom.wrapper.classList.remove( 'overview-deactivating' );
+
+ if( features.overviewTransitions ) {
+ setTimeout( function() {
+ dom.wrapper.classList.add( 'overview-animated' );
+ }, 1 );
+ }
+
+ // Don't auto-slide while in overview mode
+ cancelAutoSlide();
+
+ // Move the backgrounds element into the slide container to
+ // that the same scaling is applied
+ dom.slides.appendChild( dom.background );
+
+ // Clicking on an overview slide navigates to it
+ toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
+ if( !slide.classList.contains( 'stack' ) ) {
+ slide.addEventListener( 'click', onOverviewSlideClicked, true );
+ }
+ } );
+
+ // Calculate slide sizes
+ var margin = 70;
+ var slideSize = getComputedSlideSize();
+ overviewSlideWidth = slideSize.width + margin;
+ overviewSlideHeight = slideSize.height + margin;
+
+ // Reverse in RTL mode
+ if( config.rtl ) {
+ overviewSlideWidth = -overviewSlideWidth;
+ }
+
+ updateSlidesVisibility();
+ layoutOverview();
+ updateOverview();
+
+ layout();
+
+ // Notify observers of the overview showing
+ dispatchEvent( 'overviewshown', {
+ 'indexh': indexh,
+ 'indexv': indexv,
+ 'currentSlide': currentSlide
+ } );
+
+ }
+
+ }
+
+ /**
+ * Uses CSS transforms to position all slides in a grid for
+ * display inside of the overview mode.
+ */
+ function layoutOverview() {
+
+ // Layout slides
+ toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) {
+ hslide.setAttribute( 'data-index-h', h );
+ transformElement( hslide, 'translate3d(' + ( h * overviewSlideWidth ) + 'px, 0, 0)' );
+
+ if( hslide.classList.contains( 'stack' ) ) {
+
+ toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) {
+ vslide.setAttribute( 'data-index-h', h );
+ vslide.setAttribute( 'data-index-v', v );
+
+ transformElement( vslide, 'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' );
+ } );
+
+ }
+ } );
+
+ // Layout slide backgrounds
+ toArray( dom.background.childNodes ).forEach( function( hbackground, h ) {
+ transformElement( hbackground, 'translate3d(' + ( h * overviewSlideWidth ) + 'px, 0, 0)' );
+
+ toArray( hbackground.querySelectorAll( '.slide-background' ) ).forEach( function( vbackground, v ) {
+ transformElement( vbackground, 'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' );
+ } );
+ } );
+
+ }
+
+ /**
+ * Moves the overview viewport to the current slides.
+ * Called each time the current slide changes.
+ */
+ function updateOverview() {
+
+ var vmin = Math.min( window.innerWidth, window.innerHeight );
+ var scale = Math.max( vmin / 5, 150 ) / vmin;
+
+ transformSlides( {
+ overview: [
+ 'scale('+ scale +')',
+ 'translateX('+ ( -indexh * overviewSlideWidth ) +'px)',
+ 'translateY('+ ( -indexv * overviewSlideHeight ) +'px)'
+ ].join( ' ' )
+ } );
+
+ }
+
+ /**
+ * Exits the slide overview and enters the currently
+ * active slide.
+ */
+ function deactivateOverview() {
+
+ // Only proceed if enabled in config
+ if( config.overview ) {
+
+ overview = false;
+
+ dom.wrapper.classList.remove( 'overview' );
+ dom.wrapper.classList.remove( 'overview-animated' );
+
+ // Temporarily add a class so that transitions can do different things
+ // depending on whether they are exiting/entering overview, or just
+ // moving from slide to slide
+ dom.wrapper.classList.add( 'overview-deactivating' );
+
+ setTimeout( function () {
+ dom.wrapper.classList.remove( 'overview-deactivating' );
+ }, 1 );
+
+ // Move the background element back out
+ dom.wrapper.appendChild( dom.background );
+
+ // Clean up changes made to slides
+ toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
+ transformElement( slide, '' );
+
+ slide.removeEventListener( 'click', onOverviewSlideClicked, true );
+ } );
+
+ // Clean up changes made to backgrounds
+ toArray( dom.background.querySelectorAll( '.slide-background' ) ).forEach( function( background ) {
+ transformElement( background, '' );
+ } );
+
+ transformSlides( { overview: '' } );
+
+ slide( indexh, indexv );
+
+ layout();
+
+ cueAutoSlide();
+
+ // Notify observers of the overview hiding
+ dispatchEvent( 'overviewhidden', {
+ 'indexh': indexh,
+ 'indexv': indexv,
+ 'currentSlide': currentSlide
+ } );
+
+ }
+ }
+
+ /**
+ * Toggles the slide overview mode on and off.
+ *
+ * @param {Boolean} [override] Flag which overrides the
+ * toggle logic and forcibly sets the desired state. True means
+ * overview is open, false means it's closed.
+ */
+ function toggleOverview( override ) {
+
+ if( typeof override === 'boolean' ) {
+ override ? activateOverview() : deactivateOverview();
+ }
+ else {
+ isOverview() ? deactivateOverview() : activateOverview();
+ }
+
+ }
+
+ /**
+ * Checks if the overview is currently active.
+ *
+ * @return {Boolean} true if the overview is active,
+ * false otherwise
+ */
+ function isOverview() {
+
+ return overview;
+
+ }
+
+ /**
+ * Checks if the current or specified slide is vertical
+ * (nested within another slide).
+ *
+ * @param {HTMLElement} [slide=currentSlide] The slide to check
+ * orientation of
+ * @return {Boolean}
+ */
+ function isVerticalSlide( slide ) {
+
+ // Prefer slide argument, otherwise use current slide
+ slide = slide ? slide : currentSlide;
+
+ return slide && slide.parentNode && !!slide.parentNode.nodeName.match( /section/i );
+
+ }
+
+ /**
+ * Handling the fullscreen functionality via the fullscreen API
+ *
+ * @see http://fullscreen.spec.whatwg.org/
+ * @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
+ */
+ function enterFullscreen() {
+
+ var element = document.documentElement;
+
+ // Check which implementation is available
+ var requestMethod = element.requestFullscreen ||
+ element.webkitRequestFullscreen ||
+ element.webkitRequestFullScreen ||
+ element.mozRequestFullScreen ||
+ element.msRequestFullscreen;
+
+ if( requestMethod ) {
+ requestMethod.apply( element );
+ }
+
+ }
+
+ /**
+ * Enters the paused mode which fades everything on screen to
+ * black.
+ */
+ function pause() {
+
+ if( config.pause ) {
+ var wasPaused = dom.wrapper.classList.contains( 'paused' );
+
+ cancelAutoSlide();
+ dom.wrapper.classList.add( 'paused' );
+
+ if( wasPaused === false ) {
+ dispatchEvent( 'paused' );
+ }
+ }
+
+ }
+
+ /**
+ * Exits from the paused mode.
+ */
+ function resume() {
+
+ var wasPaused = dom.wrapper.classList.contains( 'paused' );
+ dom.wrapper.classList.remove( 'paused' );
+
+ cueAutoSlide();
+
+ if( wasPaused ) {
+ dispatchEvent( 'resumed' );
+ }
+
+ }
+
+ /**
+ * Toggles the paused mode on and off.
+ */
+ function togglePause( override ) {
+
+ if( typeof override === 'boolean' ) {
+ override ? pause() : resume();
+ }
+ else {
+ isPaused() ? resume() : pause();
+ }
+
+ }
+
+ /**
+ * Checks if we are currently in the paused mode.
+ *
+ * @return {Boolean}
+ */
+ function isPaused() {
+
+ return dom.wrapper.classList.contains( 'paused' );
+
+ }
+
+ /**
+ * Toggles the auto slide mode on and off.
+ *
+ * @param {Boolean} [override] Flag which sets the desired state.
+ * True means autoplay starts, false means it stops.
+ */
+
+ function toggleAutoSlide( override ) {
+
+ if( typeof override === 'boolean' ) {
+ override ? resumeAutoSlide() : pauseAutoSlide();
+ }
+
+ else {
+ autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide();
+ }
+
+ }
+
+ /**
+ * Checks if the auto slide mode is currently on.
+ *
+ * @return {Boolean}
+ */
+ function isAutoSliding() {
+
+ return !!( autoSlide && !autoSlidePaused );
+
+ }
+
+ /**
+ * Steps from the current point in the presentation to the
+ * slide which matches the specified horizontal and vertical
+ * indices.
+ *
+ * @param {number} [h=indexh] Horizontal index of the target slide
+ * @param {number} [v=indexv] Vertical index of the target slide
+ * @param {number} [f] Index of a fragment within the
+ * target slide to activate
+ * @param {number} [o] Origin for use in multimaster environments
+ */
+ function slide( h, v, f, o ) {
+
+ // Remember where we were at before
+ previousSlide = currentSlide;
+
+ // Query all horizontal slides in the deck
+ var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
+
+ // Abort if there are no slides
+ if( horizontalSlides.length === 0 ) return;
+
+ // If no vertical index is specified and the upcoming slide is a
+ // stack, resume at its previous vertical index
+ if( v === undefined && !isOverview() ) {
+ v = getPreviousVerticalIndex( horizontalSlides[ h ] );
+ }
+
+ // If we were on a vertical stack, remember what vertical index
+ // it was on so we can resume at the same position when returning
+ if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) {
+ setPreviousVerticalIndex( previousSlide.parentNode, indexv );
+ }
+
+ // Remember the state before this slide
+ var stateBefore = state.concat();
+
+ // Reset the state array
+ state.length = 0;
+
+ var indexhBefore = indexh || 0,
+ indexvBefore = indexv || 0;
+
+ // Activate and transition to the new slide
+ indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h );
+ indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v );
+
+ // Update the visibility of slides now that the indices have changed
+ updateSlidesVisibility();
+
+ layout();
+
+ // Apply the new state
+ stateLoop: for( var i = 0, len = state.length; i < len; i++ ) {
+ // Check if this state existed on the previous slide. If it
+ // did, we will avoid adding it repeatedly
+ for( var j = 0; j < stateBefore.length; j++ ) {
+ if( stateBefore[j] === state[i] ) {
+ stateBefore.splice( j, 1 );
+ continue stateLoop;
+ }
+ }
+
+ document.documentElement.classList.add( state[i] );
+
+ // Dispatch custom event matching the state's name
+ dispatchEvent( state[i] );
+ }
+
+ // Clean up the remains of the previous state
+ while( stateBefore.length ) {
+ document.documentElement.classList.remove( stateBefore.pop() );
+ }
+
+ // Update the overview if it's currently active
+ if( isOverview() ) {
+ updateOverview();
+ }
+
+ // Find the current horizontal slide and any possible vertical slides
+ // within it
+ var currentHorizontalSlide = horizontalSlides[ indexh ],
+ currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' );
+
+ // Store references to the previous and current slides
+ currentSlide = currentVerticalSlides[ indexv ] || currentHorizontalSlide;
+
+ // Show fragment, if specified
+ if( typeof f !== 'undefined' ) {
+ navigateFragment( f );
+ }
+
+ // Dispatch an event if the slide changed
+ var slideChanged = ( indexh !== indexhBefore || indexv !== indexvBefore );
+ if( slideChanged ) {
+ dispatchEvent( 'slidechanged', {
+ 'indexh': indexh,
+ 'indexv': indexv,
+ 'previousSlide': previousSlide,
+ 'currentSlide': currentSlide,
+ 'origin': o
+ } );
+ }
+ else {
+ // Ensure that the previous slide is never the same as the current
+ previousSlide = null;
+ }
+
+ // Solves an edge case where the previous slide maintains the
+ // 'present' class when navigating between adjacent vertical
+ // stacks
+ if( previousSlide ) {
+ previousSlide.classList.remove( 'present' );
+ previousSlide.setAttribute( 'aria-hidden', 'true' );
+
+ // Reset all slides upon navigate to home
+ // Issue: #285
+ if ( dom.wrapper.querySelector( HOME_SLIDE_SELECTOR ).classList.contains( 'present' ) ) {
+ // Launch async task
+ setTimeout( function () {
+ var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i;
+ for( i in slides ) {
+ if( slides[i] ) {
+ // Reset stack
+ setPreviousVerticalIndex( slides[i], 0 );
+ }
+ }
+ }, 0 );
+ }
+ }
+
+ // Handle embedded content
+ if( slideChanged || !previousSlide ) {
+ stopEmbeddedContent( previousSlide );
+ startEmbeddedContent( currentSlide );
+ }
+
+ // Announce the current slide contents, for screen readers
+ dom.statusDiv.textContent = getStatusText( currentSlide );
+
+ updateControls();
+ updateProgress();
+ updateBackground();
+ updateParallax();
+ updateSlideNumber();
+ updateNotes();
+
+ // Update the URL hash
+ writeURL();
+
+ cueAutoSlide();
+
+ }
+
+ /**
+ * Syncs the presentation with the current DOM. Useful
+ * when new slides or control elements are added or when
+ * the configuration has changed.
+ */
+ function sync() {
+
+ // Subscribe to input
+ removeEventListeners();
+ addEventListeners();
+
+ // Force a layout to make sure the current config is accounted for
+ layout();
+
+ // Reflect the current autoSlide value
+ autoSlide = config.autoSlide;
+
+ // Start auto-sliding if it's enabled
+ cueAutoSlide();
+
+ // Re-create the slide backgrounds
+ createBackgrounds();
+
+ // Write the current hash to the URL
+ writeURL();
+
+ sortAllFragments();
+
+ updateControls();
+ updateProgress();
+ updateSlideNumber();
+ updateSlidesVisibility();
+ updateBackground( true );
+ updateNotes();
+
+ formatEmbeddedContent();
+
+ // Start or stop embedded content depending on global config
+ if( config.autoPlayMedia === false ) {
+ stopEmbeddedContent( currentSlide );
+ }
+ else {
+ startEmbeddedContent( currentSlide );
+ }
+
+ if( isOverview() ) {
+ layoutOverview();
+ }
+
+ }
+
+ /**
+ * Resets all vertical slides so that only the first
+ * is visible.
+ */
+ function resetVerticalSlides() {
+
+ var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
+ horizontalSlides.forEach( function( horizontalSlide ) {
+
+ var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) );
+ verticalSlides.forEach( function( verticalSlide, y ) {
+
+ if( y > 0 ) {
+ verticalSlide.classList.remove( 'present' );
+ verticalSlide.classList.remove( 'past' );
+ verticalSlide.classList.add( 'future' );
+ verticalSlide.setAttribute( 'aria-hidden', 'true' );
+ }
+
+ } );
+
+ } );
+
+ }
+
+ /**
+ * Sorts and formats all of fragments in the
+ * presentation.
+ */
+ function sortAllFragments() {
+
+ var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
+ horizontalSlides.forEach( function( horizontalSlide ) {
+
+ var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) );
+ verticalSlides.forEach( function( verticalSlide, y ) {
+
+ sortFragments( verticalSlide.querySelectorAll( '.fragment' ) );
+
+ } );
+
+ if( verticalSlides.length === 0 ) sortFragments( horizontalSlide.querySelectorAll( '.fragment' ) );
+
+ } );
+
+ }
+
+ /**
+ * Randomly shuffles all slides in the deck.
+ */
+ function shuffle() {
+
+ var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
+
+ slides.forEach( function( slide ) {
+
+ // Insert this slide next to another random slide. This may
+ // cause the slide to insert before itself but that's fine.
+ dom.slides.insertBefore( slide, slides[ Math.floor( Math.random() * slides.length ) ] );
+
+ } );
+
+ }
+
+ /**
+ * Updates one dimension of slides by showing the slide
+ * with the specified index.
+ *
+ * @param {string} selector A CSS selector that will fetch
+ * the group of slides we are working with
+ * @param {number} index The index of the slide that should be
+ * shown
+ *
+ * @return {number} The index of the slide that is now shown,
+ * might differ from the passed in index if it was out of
+ * bounds.
+ */
+ function updateSlides( selector, index ) {
+
+ // Select all slides and convert the NodeList result to
+ // an array
+ var slides = toArray( dom.wrapper.querySelectorAll( selector ) ),
+ slidesLength = slides.length;
+
+ var printMode = isPrintingPDF();
+
+ if( slidesLength ) {
+
+ // Should the index loop?
+ if( config.loop ) {
+ index %= slidesLength;
+
+ if( index < 0 ) {
+ index = slidesLength + index;
+ }
+ }
+
+ // Enforce max and minimum index bounds
+ index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
+
+ for( var i = 0; i < slidesLength; i++ ) {
+ var element = slides[i];
+
+ var reverse = config.rtl && !isVerticalSlide( element );
+
+ element.classList.remove( 'past' );
+ element.classList.remove( 'present' );
+ element.classList.remove( 'future' );
+
+ // http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute
+ element.setAttribute( 'hidden', '' );
+ element.setAttribute( 'aria-hidden', 'true' );
+
+ // If this element contains vertical slides
+ if( element.querySelector( 'section' ) ) {
+ element.classList.add( 'stack' );
+ }
+
+ // If we're printing static slides, all slides are "present"
+ if( printMode ) {
+ element.classList.add( 'present' );
+ continue;
+ }
+
+ if( i < index ) {
+ // Any element previous to index is given the 'past' class
+ element.classList.add( reverse ? 'future' : 'past' );
+
+ if( config.fragments ) {
+ var pastFragments = toArray( element.querySelectorAll( '.fragment' ) );
+
+ // Show all fragments on prior slides
+ while( pastFragments.length ) {
+ var pastFragment = pastFragments.pop();
+ pastFragment.classList.add( 'visible' );
+ pastFragment.classList.remove( 'current-fragment' );
+ }
+ }
+ }
+ else if( i > index ) {
+ // Any element subsequent to index is given the 'future' class
+ element.classList.add( reverse ? 'past' : 'future' );
+
+ if( config.fragments ) {
+ var futureFragments = toArray( element.querySelectorAll( '.fragment.visible' ) );
+
+ // No fragments in future slides should be visible ahead of time
+ while( futureFragments.length ) {
+ var futureFragment = futureFragments.pop();
+ futureFragment.classList.remove( 'visible' );
+ futureFragment.classList.remove( 'current-fragment' );
+ }
+ }
+ }
+ }
+
+ // Mark the current slide as present
+ slides[index].classList.add( 'present' );
+ slides[index].removeAttribute( 'hidden' );
+ slides[index].removeAttribute( 'aria-hidden' );
+
+ // If this slide has a state associated with it, add it
+ // onto the current state of the deck
+ var slideState = slides[index].getAttribute( 'data-state' );
+ if( slideState ) {
+ state = state.concat( slideState.split( ' ' ) );
+ }
+
+ }
+ else {
+ // Since there are no slides we can't be anywhere beyond the
+ // zeroth index
+ index = 0;
+ }
+
+ return index;
+
+ }
+
+ /**
+ * Optimization method; hide all slides that are far away
+ * from the present slide.
+ */
+ function updateSlidesVisibility() {
+
+ // Select all slides and convert the NodeList result to
+ // an array
+ var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ),
+ horizontalSlidesLength = horizontalSlides.length,
+ distanceX,
+ distanceY;
+
+ if( horizontalSlidesLength && typeof indexh !== 'undefined' ) {
+
+ // The number of steps away from the present slide that will
+ // be visible
+ var viewDistance = isOverview() ? 10 : config.viewDistance;
+
+ // Limit view distance on weaker devices
+ if( isMobileDevice ) {
+ viewDistance = isOverview() ? 6 : 2;
+ }
+
+ // All slides need to be visible when exporting to PDF
+ if( isPrintingPDF() ) {
+ viewDistance = Number.MAX_VALUE;
+ }
+
+ for( var x = 0; x < horizontalSlidesLength; x++ ) {
+ var horizontalSlide = horizontalSlides[x];
+
+ var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ),
+ verticalSlidesLength = verticalSlides.length;
+
+ // Determine how far away this slide is from the present
+ distanceX = Math.abs( ( indexh || 0 ) - x ) || 0;
+
+ // If the presentation is looped, distance should measure
+ // 1 between the first and last slides
+ if( config.loop ) {
+ distanceX = Math.abs( ( ( indexh || 0 ) - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0;
+ }
+
+ // Show the horizontal slide if it's within the view distance
+ if( distanceX < viewDistance ) {
+ showSlide( horizontalSlide );
+ }
+ else {
+ hideSlide( horizontalSlide );
+ }
+
+ if( verticalSlidesLength ) {
+
+ var oy = getPreviousVerticalIndex( horizontalSlide );
+
+ for( var y = 0; y < verticalSlidesLength; y++ ) {
+ var verticalSlide = verticalSlides[y];
+
+ distanceY = x === ( indexh || 0 ) ? Math.abs( ( indexv || 0 ) - y ) : Math.abs( y - oy );
+
+ if( distanceX + distanceY < viewDistance ) {
+ showSlide( verticalSlide );
+ }
+ else {
+ hideSlide( verticalSlide );
+ }
+ }
+
+ }
+ }
+
+ }
+
+ }
+
+ /**
+ * Pick up notes from the current slide and display them
+ * to the viewer.
+ *
+ * @see {@link config.showNotes}
+ */
+ function updateNotes() {
+
+ if( config.showNotes && dom.speakerNotes && currentSlide && !isPrintingPDF() ) {
+
+ dom.speakerNotes.innerHTML = getSlideNotes() || '';
+
+ }
+
+ }
+
+ /**
+ * Updates the progress bar to reflect the current slide.
+ */
+ function updateProgress() {
+
+ // Update progress if enabled
+ if( config.progress && dom.progressbar ) {
+
+ dom.progressbar.style.width = getProgress() * dom.wrapper.offsetWidth + 'px';
+
+ }
+
+ }
+
+ /**
+ * Updates the slide number div to reflect the current slide.
+ *
+ * The following slide number formats are available:
+ * "h.v": horizontal . vertical slide number (default)
+ * "h/v": horizontal / vertical slide number
+ * "c": flattened slide number
+ * "c/t": flattened slide number / total slides
+ */
+ function updateSlideNumber() {
+
+ // Update slide number if enabled
+ if( config.slideNumber && dom.slideNumber ) {
+
+ var value = [];
+ var format = 'h.v';
+
+ // Check if a custom number format is available
+ if( typeof config.slideNumber === 'string' ) {
+ format = config.slideNumber;
+ }
+
+ switch( format ) {
+ case 'c':
+ value.push( getSlidePastCount() + 1 );
+ break;
+ case 'c/t':
+ value.push( getSlidePastCount() + 1, '/', getTotalSlides() );
+ break;
+ case 'h/v':
+ value.push( indexh + 1 );
+ if( isVerticalSlide() ) value.push( '/', indexv + 1 );
+ break;
+ default:
+ value.push( indexh + 1 );
+ if( isVerticalSlide() ) value.push( '.', indexv + 1 );
+ }
+
+ dom.slideNumber.innerHTML = formatSlideNumber( value[0], value[1], value[2] );
+ }
+
+ }
+
+ /**
+ * Applies HTML formatting to a slide number before it's
+ * written to the DOM.
+ *
+ * @param {number} a Current slide
+ * @param {string} delimiter Character to separate slide numbers
+ * @param {(number|*)} b Total slides
+ * @return {string} HTML string fragment
+ */
+ function formatSlideNumber( a, delimiter, b ) {
+
+ if( typeof b === 'number' && !isNaN( b ) ) {
+ return ''+ a +'' +
+ ''+ delimiter +'' +
+ ''+ b +'';
+ }
+ else {
+ return ''+ a +'';
+ }
+
+ }
+
+ /**
+ * Updates the state of all control/navigation arrows.
+ */
+ function updateControls() {
+
+ var routes = availableRoutes();
+ var fragments = availableFragments();
+
+ // Remove the 'enabled' class from all directions
+ dom.controlsLeft.concat( dom.controlsRight )
+ .concat( dom.controlsUp )
+ .concat( dom.controlsDown )
+ .concat( dom.controlsPrev )
+ .concat( dom.controlsNext ).forEach( function( node ) {
+ node.classList.remove( 'enabled' );
+ node.classList.remove( 'fragmented' );
+
+ // Set 'disabled' attribute on all directions
+ node.setAttribute( 'disabled', 'disabled' );
+ } );
+
+ // Add the 'enabled' class to the available routes; remove 'disabled' attribute to enable buttons
+ if( routes.left ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.right ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.up ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.down ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+ // Prev/next buttons
+ if( routes.left || routes.up ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+ // Highlight fragment directions
+ if( currentSlide ) {
+
+ // Always apply fragment decorator to prev/next buttons
+ if( fragments.prev ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( fragments.next ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+
+ // Apply fragment decorators to directional buttons based on
+ // what slide axis they are in
+ if( isVerticalSlide( currentSlide ) ) {
+ if( fragments.prev ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( fragments.next ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ }
+ else {
+ if( fragments.prev ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ if( fragments.next ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
+ }
+
+ }
+
+ }
+
+ /**
+ * Updates the background elements to reflect the current
+ * slide.
+ *
+ * @param {boolean} includeAll If true, the backgrounds of
+ * all vertical slides (not just the present) will be updated.
+ */
+ function updateBackground( includeAll ) {
+
+ var currentBackground = null;
+
+ // Reverse past/future classes when in RTL mode
+ var horizontalPast = config.rtl ? 'future' : 'past',
+ horizontalFuture = config.rtl ? 'past' : 'future';
+
+ // Update the classes of all backgrounds to match the
+ // states of their slides (past/present/future)
+ toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) {
+
+ backgroundh.classList.remove( 'past' );
+ backgroundh.classList.remove( 'present' );
+ backgroundh.classList.remove( 'future' );
+
+ if( h < indexh ) {
+ backgroundh.classList.add( horizontalPast );
+ }
+ else if ( h > indexh ) {
+ backgroundh.classList.add( horizontalFuture );
+ }
+ else {
+ backgroundh.classList.add( 'present' );
+
+ // Store a reference to the current background element
+ currentBackground = backgroundh;
+ }
+
+ if( includeAll || h === indexh ) {
+ toArray( backgroundh.querySelectorAll( '.slide-background' ) ).forEach( function( backgroundv, v ) {
+
+ backgroundv.classList.remove( 'past' );
+ backgroundv.classList.remove( 'present' );
+ backgroundv.classList.remove( 'future' );
+
+ if( v < indexv ) {
+ backgroundv.classList.add( 'past' );
+ }
+ else if ( v > indexv ) {
+ backgroundv.classList.add( 'future' );
+ }
+ else {
+ backgroundv.classList.add( 'present' );
+
+ // Only if this is the present horizontal and vertical slide
+ if( h === indexh ) currentBackground = backgroundv;
+ }
+
+ } );
+ }
+
+ } );
+
+ // Stop content inside of previous backgrounds
+ if( previousBackground ) {
+
+ stopEmbeddedContent( previousBackground );
+
+ }
+
+ // Start content in the current background
+ if( currentBackground ) {
+
+ startEmbeddedContent( currentBackground );
+
+ var backgroundImageURL = currentBackground.style.backgroundImage || '';
+
+ // Restart GIFs (doesn't work in Firefox)
+ if( /\.gif/i.test( backgroundImageURL ) ) {
+ currentBackground.style.backgroundImage = '';
+ window.getComputedStyle( currentBackground ).opacity;
+ currentBackground.style.backgroundImage = backgroundImageURL;
+ }
+
+ // Don't transition between identical backgrounds. This
+ // prevents unwanted flicker.
+ var previousBackgroundHash = previousBackground ? previousBackground.getAttribute( 'data-background-hash' ) : null;
+ var currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' );
+ if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== previousBackground ) {
+ dom.background.classList.add( 'no-transition' );
+ }
+
+ previousBackground = currentBackground;
+
+ }
+
+ // If there's a background brightness flag for this slide,
+ // bubble it to the .reveal container
+ if( currentSlide ) {
+ [ 'has-light-background', 'has-dark-background' ].forEach( function( classToBubble ) {
+ if( currentSlide.classList.contains( classToBubble ) ) {
+ dom.wrapper.classList.add( classToBubble );
+ }
+ else {
+ dom.wrapper.classList.remove( classToBubble );
+ }
+ } );
+ }
+
+ // Allow the first background to apply without transition
+ setTimeout( function() {
+ dom.background.classList.remove( 'no-transition' );
+ }, 1 );
+
+ }
+
+ /**
+ * Updates the position of the parallax background based
+ * on the current slide index.
+ */
+ function updateParallax() {
+
+ if( config.parallaxBackgroundImage ) {
+
+ var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
+ verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
+
+ var backgroundSize = dom.background.style.backgroundSize.split( ' ' ),
+ backgroundWidth, backgroundHeight;
+
+ if( backgroundSize.length === 1 ) {
+ backgroundWidth = backgroundHeight = parseInt( backgroundSize[0], 10 );
+ }
+ else {
+ backgroundWidth = parseInt( backgroundSize[0], 10 );
+ backgroundHeight = parseInt( backgroundSize[1], 10 );
+ }
+
+ var slideWidth = dom.background.offsetWidth,
+ horizontalSlideCount = horizontalSlides.length,
+ horizontalOffsetMultiplier,
+ horizontalOffset;
+
+ if( typeof config.parallaxBackgroundHorizontal === 'number' ) {
+ horizontalOffsetMultiplier = config.parallaxBackgroundHorizontal;
+ }
+ else {
+ horizontalOffsetMultiplier = horizontalSlideCount > 1 ? ( backgroundWidth - slideWidth ) / ( horizontalSlideCount-1 ) : 0;
+ }
+
+ horizontalOffset = horizontalOffsetMultiplier * indexh * -1;
+
+ var slideHeight = dom.background.offsetHeight,
+ verticalSlideCount = verticalSlides.length,
+ verticalOffsetMultiplier,
+ verticalOffset;
+
+ if( typeof config.parallaxBackgroundVertical === 'number' ) {
+ verticalOffsetMultiplier = config.parallaxBackgroundVertical;
+ }
+ else {
+ verticalOffsetMultiplier = ( backgroundHeight - slideHeight ) / ( verticalSlideCount-1 );
+ }
+
+ verticalOffset = verticalSlideCount > 0 ? verticalOffsetMultiplier * indexv : 0;
+
+ dom.background.style.backgroundPosition = horizontalOffset + 'px ' + -verticalOffset + 'px';
+
+ }
+
+ }
+
+ /**
+ * Called when the given slide is within the configured view
+ * distance. Shows the slide element and loads any content
+ * that is set to load lazily (data-src).
+ *
+ * @param {HTMLElement} slide Slide to show
+ */
+ /**
+ * Called when the given slide is within the configured view
+ * distance. Shows the slide element and loads any content
+ * that is set to load lazily (data-src).
+ *
+ * @param {HTMLElement} slide Slide to show
+ */
+ function showSlide( slide ) {
+
+ // Show the slide element
+ slide.style.display = config.display;
+
+ // Media elements with data-src attributes
+ toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src]' ) ).forEach( function( element ) {
+ element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
+ element.removeAttribute( 'data-src' );
+ } );
+
+ // Media elements with