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This commit is contained in:
Andreas Preikschat 2010-10-24 18:18:01 +02:00
parent 8d82715924 98a5300068
commit b3ae89e045
9 changed files with 214 additions and 97 deletions
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1
openlp/core/lib/__init__.py
View File

@ -314,6 +314,7 @@ def expand_tags(text):
from spelltextedit import SpellTextEdit
from eventreceiver import Receiver
from imagemanager import ImageManager
from settingsmanager import SettingsManager
from plugin import PluginStatus, StringContent, Plugin
from pluginmanager import PluginManager

13
openlp/core/lib/htmlbuilder.py
View File

@ -90,16 +90,16 @@ body {
var transition = %s;
function show_video(state, path, volume, loop){
// Note, the preferred method for looping would be to use the
// Note, the preferred method for looping would be to use the
// video tag loop attribute.
// But QtWebKit doesn't support this. Neither does it support the
// onended event, hence the setInterval()
// In addition, setting the currentTime attribute to zero to restart
// the video raises an INDEX_SIZE_ERROR: DOM Exception 1
// To complicate it further, sometimes vid.currentTime stops
// To complicate it further, sometimes vid.currentTime stops
// slightly short of vid.duration and vid.ended is intermittent!
//
// Note, currently the background may go black between loops. Not
// Note, currently the background may go black between loops. Not
// desirable. Need to investigate using two <video>'s, and hiding/
// preloading one, and toggle between the two when looping.
@ -132,8 +132,8 @@ body {
vid.style.visibility = 'visible';
if(vid.looping){
video_timer = setInterval(
function() {
show_video('poll');
function() {
show_video('poll');
}, 200);
}
break;
@ -328,6 +328,7 @@ def build_html(item, screen, alert, islive):
height = screen[u'size'].height()
theme = item.themedata
webkitvers = webkit_version()
# Image generated and poked in
if item.bg_image_bytes:
image = u'src="data:image/png;base64,%s"' % item.bg_image_bytes
else:
@ -455,7 +456,7 @@ def build_lyrics_css(item, webkitvers):
if theme.display_outline and webkitvers < 534.3:
shadow = u'padding-left: %spx; padding-top: %spx;' % \
(int(theme.display_shadow_size) +
(int(theme.display_outline_size) * 2),
(int(theme.display_outline_size) * 2),
theme.display_shadow_size)
shadow += build_lyrics_outline_css(theme, True)
else:

158
openlp/core/lib/imagemanager.py Normal file
View File

@ -0,0 +1,158 @@
# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2010 Raoul Snyman #
# Portions copyright (c) 2008-2010 Tim Bentley, Jonathan Corwin, Michael #
# Gorven, Scott Guerrieri, Meinert Jordan, Andreas Preikschat, Christian #
# Richter, Philip Ridout, Maikel Stuivenberg, Martin Thompson, Jon Tibble, #
# Carsten Tinggaard, Frode Woldsund #
# --------------------------------------------------------------------------- #
# 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 #
###############################################################################
"""
Provides the store and management for Images automatically caching them and
resizing them when needed. Only one copy of each image is needed in the system.
A Thread is used to convert the image to a byte array so the user does not need
to wait for the conversion to happen.
"""
import logging
import os
import time
from PyQt4 import QtCore
from openlp.core.lib import resize_image, image_to_byte
log = logging.getLogger(__name__)
class ImageThread(QtCore.QThread):
"""
A special Qt thread class to speed up the display of text based frames.
This is threaded so it loads the frames in background
"""
def __init__(self, manager):
QtCore.QThread.__init__(self, None)
self.image_mamager = manager
def run(self):
"""
Run the thread.
"""
self.image_mamager.process()
class Image(object):
name = ''
path = ''
dirty = True
image = None
image_bytes = None
class ImageManager(QtCore.QObject):
"""
Image Manager handles the conversion and sizing of images.
"""
log.info(u'Image Manager loaded')
def __init__(self):
self._cache = {}
self._thread_running = False
self._cache_dirty = False
self.image_thread = ImageThread(self)
def update_display(self, width, height):
"""
Screen has changed size so rebuild the cache to new size
"""
log.debug(u'update_display')
self.width = width
self.height = height
# mark the images as dirty for a rebuild
for key in self._cache.keys():
image = self._cache[key]
image.dirty = True
fullpath = os.path.join(image.path, image.name)
image.image = resize_image(fullpath,
self.width, self.height)
self._cache_dirty = True
# only one thread please
if not self._thread_running:
self.image_thread.start()
def get_image(self, name):
"""
Return the Qimage from the cache
"""
log.debug(u'get_image %s' % name)
return self._cache[name].image
def get_image_bytes(self, name):
"""
Returns the byte string for an image
If not present wait for the background thread to process it.
"""
log.debug(u'get_image_bytes %s' % name)
if not self._cache[name].image_bytes:
while self._cache[name].dirty:
log.debug(u'get_image_bytes - waiting')
time.sleep(0.1)
return self._cache[name].image_bytes
def add_image(self, name, path):
"""
Add image to cache if it is not already there
"""
log.debug(u'add_image %s:%s' % (name, path))
if not name in self._cache:
image = Image()
image.name = name
image.path = path
image.image = resize_image(path,
self.width, self.height)
self._cache[name] = image
self._cache_dirty = True
# only one thread please
if not self._thread_running:
self.image_thread.start()
def process(self):
"""
Controls the processing called from a QThread
"""
log.debug(u'process - started')
self._thread_running = True
self.clean_cache()
# data loaded since we started ?
while self._cache_dirty:
log.debug(u'process - recycle')
self.clean_cache()
self._thread_running = False
log.debug(u'process - ended')
def clean_cache(self):
"""
Actually does the work.
"""
log.debug(u'clean_cache')
# we will clean the cache now
self._cache_dirty = False
for key in self._cache.keys():
image = self._cache[key]
if image.dirty:
image.image_bytes = image_to_byte(image.image)
image.dirty = False

45
openlp/core/lib/renderer.py
View File

@ -51,11 +51,6 @@ class Renderer(object):
self._rect = None
self.theme_name = None
self._theme = None
self._bg_image_filename = None
self.frame = None
self.bg_frame = None
self.bg_image = None
self.bg_image_bytes = None
def set_theme(self, theme):
"""
@ -66,14 +61,7 @@ class Renderer(object):
"""
log.debug(u'set theme')
self._theme = theme
self.bg_frame = None
self.bg_image = None
self.bg_image_bytes = None
self._bg_image_filename = None
self.theme_name = theme.theme_name
if theme.background_type == u'image':
if theme.background_filename:
self._bg_image_filename = unicode(theme.background_filename)
def set_text_rectangle(self, rect_main, rect_footer):
"""
@ -105,39 +93,6 @@ class Renderer(object):
(build_lyrics_format_css(self._theme, self.page_width,
self.page_height), build_lyrics_outline_css(self._theme))
def set_frame_dest(self, frame_width, frame_height):
"""
Set the size of the slide.
``frame_width``
The width of the slide.
``frame_height``
The height of the slide.
"""
log.debug(u'set frame dest (frame) w %d h %d', frame_width,
frame_height)
self.frame = QtGui.QImage(frame_width, frame_height,
QtGui.QImage.Format_ARGB32_Premultiplied)
if self._bg_image_filename and not self.bg_image:
self.bg_image = resize_image(self._bg_image_filename,
self.frame.width(), self.frame.height())
if self._theme.background_type == u'image':
self.bg_frame = QtGui.QImage(self.frame.width(),
self.frame.height(),
QtGui.QImage.Format_ARGB32_Premultiplied)
painter = QtGui.QPainter()
painter.begin(self.bg_frame)
painter.fillRect(self.frame.rect(), QtCore.Qt.black)
if self.bg_image:
painter.drawImage(0, 0, self.bg_image)
painter.end()
self.bg_image_bytes = image_to_byte(self.bg_frame)
else:
self.bg_frame = None
self.bg_image_bytes = None
def format_slide(self, words, line_break):
"""
Figure out how much text can appear on a slide, using the current

11
openlp/core/lib/rendermanager.py
View File

@ -28,7 +28,7 @@ import logging
from PyQt4 import QtCore
from openlp.core.lib import Renderer, ThemeLevel, ServiceItem
from openlp.core.lib import Renderer, ThemeLevel, ServiceItem, ImageManager
from openlp.core.ui import MainDisplay
log = logging.getLogger(__name__)
@ -56,7 +56,9 @@ class RenderManager(object):
"""
log.debug(u'Initilisation started')
self.screens = screens
self.image_manager = ImageManager()
self.display = MainDisplay(self, screens, False)
self.display.imageManager = self.image_manager
self.display.setup()
self.theme_manager = theme_manager
self.renderer = Renderer()
@ -75,9 +77,11 @@ class RenderManager(object):
log.debug(u'Update Display')
self.calculate_default(self.screens.current[u'size'])
self.display = MainDisplay(self, self.screens, False)
self.display.imageManager = self.image_manager
self.display.setup()
self.renderer.bg_frame = None
self.themedata = None
self.image_manager.update_display(self.width, self.height)
def set_global_theme(self, global_theme, theme_level=ThemeLevel.Global):
"""
@ -153,7 +157,8 @@ class RenderManager(object):
self.calculate_default(self.screens.current[u'size'])
self.renderer.set_theme(self.themedata)
self.build_text_rectangle(self.themedata)
self.renderer.set_frame_dest(self.width, self.height)
self.image_manager.add_image(self.themedata.theme_name,
self.themedata.background_filename)
return self.renderer._rect, self.renderer._rect_footer
def build_text_rectangle(self, theme):
@ -211,7 +216,7 @@ class RenderManager(object):
serviceItem.raw_footer = footer
serviceItem.render(True)
self.display.buildHtml(serviceItem)
raw_html = serviceItem.get_rendered_frame(0)[1]
raw_html = serviceItem.get_rendered_frame(0)
preview = self.display.text(raw_html)
# Reset the real screen size for subsequent render requests
self.calculate_default(self.screens.current[u'size'])

30
openlp/core/lib/serviceitem.py
View File

@ -30,7 +30,6 @@ type and capability of an item.
import logging
import os
import time
import uuid
from PyQt4 import QtGui
@ -160,12 +159,10 @@ class ServiceItem(object):
theme = self.theme
self.main, self.footer = \
self.render_manager.set_override_theme(theme, useOverride)
self.bg_image_bytes = self.render_manager.renderer.bg_image_bytes
self.themedata = self.render_manager.renderer._theme
if self.service_item_type == ServiceItemType.Text:
log.debug(u'Formatting slides')
for slide in self._raw_frames:
before = time.time()
formatted = self.render_manager \
.format_slide(slide[u'raw_slide'], line_break)
for page in formatted:
@ -174,12 +171,8 @@ class ServiceItem(object):
u'text': clean_tags(page.rstrip()),
u'html': expand_tags(page.rstrip()),
u'verseTag': slide[u'verseTag'] })
log.log(15, u'Formatting took %4s' % (time.time() - before))
elif self.service_item_type == ServiceItemType.Image:
for slide in self._raw_frames:
slide[u'image'] = resize_image(slide[u'image'],
self.render_manager.width, self.render_manager.height)
elif self.service_item_type == ServiceItemType.Command:
elif self.service_item_type == ServiceItemType.Image or \
self.service_item_type == ServiceItemType.Command:
pass
else:
log.error(u'Invalid value renderer :%s' % self.service_item_type)
@ -192,7 +185,7 @@ class ServiceItem(object):
else:
self.foot_text = u'%s<br>%s' % (self.foot_text, foot)
def add_from_image(self, path, title, image):
def add_from_image(self, path, title):
"""
Add an image slide to the service item.
@ -201,13 +194,11 @@ class ServiceItem(object):
``title``
A title for the slide in the service item.
``image``
The actual image file name.
"""
self.service_item_type = ServiceItemType.Image
self._raw_frames.append(
{u'title': title, u'image': image, u'path': path})
{u'title': title, u'path': path})
self.render_manager.image_manager.add_image(title, path)
self._new_item()
def add_from_text(self, title, raw_slide, verse_tag=None):
@ -241,7 +232,7 @@ class ServiceItem(object):
"""
self.service_item_type = ServiceItemType.Command
self._raw_frames.append(
{u'title': file_name, u'image': image, u'path': path})
{u'title': file_name, u'image':image, u'path': path})
self._new_item()
def get_service_repr(self):
@ -310,8 +301,7 @@ class ServiceItem(object):
elif self.service_item_type == ServiceItemType.Image:
for text_image in serviceitem[u'serviceitem'][u'data']:
filename = os.path.join(path, text_image)
real_image = QtGui.QImage(unicode(filename))
self.add_from_image(path, text_image, real_image)
self.add_from_image(filename, text_image)
elif self.service_item_type == ServiceItemType.Command:
for text_image in serviceitem[u'serviceitem'][u'data']:
filename = os.path.join(path, text_image[u'title'])
@ -387,9 +377,11 @@ class ServiceItem(object):
renders it if required.
"""
if self.service_item_type == ServiceItemType.Text:
return None, self._display_frames[row][u'html'].split(u'\n')[0]
return self._display_frames[row][u'html'].split(u'\n')[0]
elif self.service_item_type == ServiceItemType.Image:
return self._raw_frames[row][u'title']
else:
return self._raw_frames[row][u'image'], u''
return self._raw_frames[row][u'image']
def get_frame_title(self, row=0):
"""

23
openlp/core/ui/maindisplay.py
View File

@ -225,7 +225,14 @@ class MainDisplay(DisplayWidget):
shrinkItem.resize(self.screen[u'size'].width(),
self.screen[u'size'].height())
def image(self, image):
def directImage(self, name, path):
"""
API for replacement backgrounds so Images are added directly to cache
"""
image = self.imageManager.add_image(name, path)
self.image(name)
def image(self, name):
"""
Add an image as the background. The image is converted to a
bytestream on route.
@ -234,25 +241,20 @@ class MainDisplay(DisplayWidget):
The Image to be displayed can be QImage or QPixmap
"""
log.debug(u'image to display')
if not isinstance(image, QtGui.QImage):
image = resize_image(image, self.screen[u'size'].width(),
self.screen[u'size'].height())
image = self.imageManager.get_image_bytes(name)
self.resetVideo()
self.displayImage(image)
# show screen
if self.isLive:
self.setVisible(True)
return self.preview()
def displayImage(self, image):
"""
Display an image, as is.
"""
if image:
if isinstance(image, QtGui.QImage):
js = u'show_image("data:image/png;base64,%s");' % \
image_to_byte(image)
else:
js = u'show_image("data:image/png;base64,%s");' % image
js = u'show_image("data:image/png;base64,%s");' % image
else:
js = u'show_image("");'
self.frame.evaluateJavaScript(js)
@ -399,6 +401,9 @@ class MainDisplay(DisplayWidget):
self.loaded = False
self.initialFrame = False
self.serviceItem = serviceItem
if self.serviceItem.themedata.background_filename:
self.serviceItem.bg_image_bytes = self.imageManager. \
get_image_bytes(self.serviceItem.themedata.theme_name)
html = build_html(self.serviceItem, self.screen, self.parent.alertTab,
self.isLive)
log.debug(u'buildHtml - pre setHtml')

24
openlp/core/ui/slidecontroller.py
View File

@ -26,6 +26,7 @@
import logging
import os
import time
from PyQt4 import QtCore, QtGui
from PyQt4.phonon import Phonon
@ -400,6 +401,7 @@ class SlideController(QtGui.QWidget):
log.debug(u'screenSizeChanged live = %s' % self.isLive)
# rebuild display as screen size changed
self.display = MainDisplay(self, self.screens, self.isLive)
self.display.imageManager = self.parent.RenderManager.image_manager
self.display.alertTab = self.alertTab
self.ratio = float(self.screens.current[u'size'].width()) / \
float(self.screens.current[u'size'].height())
@ -585,13 +587,14 @@ class SlideController(QtGui.QWidget):
label = QtGui.QLabel()
label.setMargin(4)
label.setScaledContents(True)
if isinstance(frame[u'image'], QtGui.QImage):
label.setPixmap(QtGui.QPixmap.fromImage(frame[u'image']))
else:
pixmap = resize_image(frame[u'image'],
if self.serviceItem.is_command():
image = resize_image(frame[u'image'],
self.parent.RenderManager.width,
self.parent.RenderManager.height)
label.setPixmap(QtGui.QPixmap.fromImage(pixmap))
else:
image = self.parent.RenderManager.image_manager. \
get_image(frame[u'title'])
label.setPixmap(QtGui.QPixmap.fromImage(image))
self.PreviewListWidget.setCellWidget(framenumber, 0, label)
slideHeight = width * self.parent.RenderManager.screen_ratio
row += 1
@ -782,15 +785,12 @@ class SlideController(QtGui.QWidget):
[self.serviceItem, self.isLive, row])
self.updatePreview()
else:
frame, raw_html = self.serviceItem.get_rendered_frame(row)
toDisplay = self.serviceItem.get_rendered_frame(row)
if self.serviceItem.is_text():
frame = self.display.text(raw_html)
frame = self.display.text(toDisplay)
else:
self.display.image(frame)
if isinstance(frame, QtGui.QImage):
self.SlidePreview.setPixmap(QtGui.QPixmap.fromImage(frame))
else:
self.SlidePreview.setPixmap(QtGui.QPixmap(frame))
frame = self.display.image(toDisplay)
self.SlidePreview.setPixmap(QtGui.QPixmap.fromImage(frame))
self.selectedRow = row
Receiver.send_message(u'slidecontroller_%s_changed' % self.typePrefix,
row)

6
openlp/plugins/images/lib/mediaitem.py
View File

@ -166,9 +166,8 @@ class ImageMediaItem(MediaManagerItem):
for item in items:
bitem = self.listView.item(item.row())
filename = unicode(bitem.data(QtCore.Qt.UserRole).toString())
frame = QtGui.QImage(unicode(filename))
(path, name) = os.path.split(filename)
service_item.add_from_image(path, name, frame)
service_item.add_from_image(filename, name)
return True
else:
return False
@ -185,7 +184,8 @@ class ImageMediaItem(MediaManagerItem):
for item in items:
bitem = self.listView.item(item.row())
filename = unicode(bitem.data(QtCore.Qt.UserRole).toString())
self.parent.liveController.display.image(filename)
(path, name) = os.path.split(filename)
self.parent.liveController.display.directImage(name, filename)
self.resetButton.setVisible(True)
def onPreviewClick(self):