2010-03-21 23:58:01 +00:00
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# -*- coding: utf-8 -*-
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2008-12-01 13:15:31 +00:00
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# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
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2009-07-14 13:51:27 +00:00
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2009-09-08 19:58:05 +00:00
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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2010-12-26 11:04:47 +00:00
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# Copyright (c) 2008-2011 Raoul Snyman #
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2011-05-26 16:25:54 +00:00
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# Portions copyright (c) 2008-2011 Tim Bentley, Gerald Britton, Jonathan #
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# Corwin, Michael Gorven, Scott Guerrieri, Matthias Hub, Meinert Jordan, #
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2011-05-26 17:11:22 +00:00
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# Armin Köhler, Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias #
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2011-06-12 16:02:52 +00:00
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# Põldaru, Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith, #
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2011-06-12 15:41:01 +00:00
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# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Frode Woldsund #
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2009-09-08 19:58:05 +00:00
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# --------------------------------------------------------------------------- #
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# This program is free software; you can redistribute it and/or modify it #
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# under the terms of the GNU General Public License as published by the Free #
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# Software Foundation; version 2 of the License. #
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# #
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# This program is distributed in the hope that it will be useful, but WITHOUT #
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
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# more details. #
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# #
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# You should have received a copy of the GNU General Public License along #
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# with this program; if not, write to the Free Software Foundation, Inc., 59 #
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# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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###############################################################################
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2009-05-11 05:09:43 +00:00
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2011-03-28 18:12:46 +00:00
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import logging
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2011-08-20 11:45:06 +00:00
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from PyQt4 import QtGui, QtCore, QtWebKit
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2011-03-28 18:12:46 +00:00
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2011-05-05 11:51:47 +00:00
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from openlp.core.lib import ServiceItem, expand_tags, \
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2011-03-28 18:12:46 +00:00
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build_lyrics_format_css, build_lyrics_outline_css, Receiver, \
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2011-11-02 20:27:53 +00:00
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ItemCapabilities, FormattingTags
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2011-03-28 18:12:46 +00:00
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from openlp.core.lib.theme import ThemeLevel
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2011-05-04 17:31:02 +00:00
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from openlp.core.ui import MainDisplay, ScreenList
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2011-03-28 18:12:46 +00:00
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log = logging.getLogger(__name__)
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VERSE = u'The Lord said to {r}Noah{/r}: \n' \
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'There\'s gonna be a {su}floody{/su}, {sb}floody{/sb}\n' \
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'The Lord said to {g}Noah{/g}:\n' \
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'There\'s gonna be a {st}floody{/st}, {it}floody{/it}\n' \
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'Get those children out of the muddy, muddy \n' \
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'{r}C{/r}{b}h{/b}{bl}i{/bl}{y}l{/y}{g}d{/g}{pk}' \
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'r{/pk}{o}e{/o}{pp}n{/pp} of the Lord\n'
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2011-09-26 18:48:47 +00:00
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VERSE_FOR_LINE_COUNT = u'\n'.join(map(unicode, xrange(50)))
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2011-03-28 18:12:46 +00:00
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FOOTER = [u'Arky Arky (Unknown)', u'Public Domain', u'CCLI 123456']
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class Renderer(object):
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"""
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Class to pull all Renderer interactions into one place. The plugins will
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call helper methods to do the rendering but this class will provide
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display defense code.
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"""
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2011-03-28 18:56:39 +00:00
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log.info(u'Renderer Loaded')
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2011-03-28 18:12:46 +00:00
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2011-10-24 20:04:29 +00:00
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def __init__(self, imageManager, themeManager):
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2011-03-28 18:12:46 +00:00
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"""
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2011-10-16 14:40:46 +00:00
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Initialise the renderer.
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2011-05-07 20:55:11 +00:00
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2011-06-23 13:32:32 +00:00
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``imageManager``
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2011-10-16 14:40:46 +00:00
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A imageManager instance which takes care of e. g. caching and resizing
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2011-05-07 20:55:11 +00:00
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images.
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2011-06-27 11:51:25 +00:00
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``themeManager``
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2011-10-16 14:40:46 +00:00
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The themeManager instance, used to get the current theme details.
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2011-03-28 18:12:46 +00:00
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"""
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2011-06-01 07:38:19 +00:00
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log.debug(u'Initialisation started')
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2011-06-27 11:51:25 +00:00
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self.themeManager = themeManager
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2011-06-23 13:32:32 +00:00
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self.imageManager = imageManager
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2011-05-05 11:51:47 +00:00
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self.screens = ScreenList.get_instance()
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2011-03-28 18:12:46 +00:00
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self.service_theme = u''
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self.theme_level = u''
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self.override_background = None
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self.theme_data = None
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2011-05-05 11:51:47 +00:00
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self.bg_frame = None
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2011-03-28 18:12:46 +00:00
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self.force_page = False
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2011-10-24 20:04:29 +00:00
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self.display = MainDisplay(None, self.imageManager, False, self)
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2011-05-05 11:51:47 +00:00
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self.display.setup()
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2011-03-28 18:12:46 +00:00
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def update_display(self):
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"""
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2011-10-16 14:40:46 +00:00
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Updates the renderer's information about the current screen.
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2011-03-28 18:12:46 +00:00
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"""
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log.debug(u'Update Display')
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2011-08-05 08:43:32 +00:00
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self._calculate_default()
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2011-06-08 21:39:07 +00:00
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if self.display:
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self.display.close()
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2011-10-26 20:11:15 +00:00
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self.display = MainDisplay(None, self.imageManager, False, self)
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2011-03-28 18:12:46 +00:00
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self.display.setup()
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self.bg_frame = None
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self.theme_data = None
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def set_global_theme(self, global_theme, theme_level=ThemeLevel.Global):
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"""
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Set the global-level theme and the theme level.
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``global_theme``
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The global-level theme to be set.
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``theme_level``
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2011-06-13 09:47:18 +00:00
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Defaults to ``ThemeLevel.Global``. The theme level, can be
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2011-03-28 18:12:46 +00:00
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``ThemeLevel.Global``, ``ThemeLevel.Service`` or
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``ThemeLevel.Song``.
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"""
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self.global_theme = global_theme
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self.theme_level = theme_level
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self.global_theme_data = \
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2011-06-27 11:51:25 +00:00
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self.themeManager.getThemeData(self.global_theme)
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2011-03-28 18:12:46 +00:00
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self.theme_data = None
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def set_service_theme(self, service_theme):
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"""
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Set the service-level theme.
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``service_theme``
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The service-level theme to be set.
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"""
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self.service_theme = service_theme
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self.theme_data = None
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2011-04-03 06:19:03 +00:00
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def set_override_theme(self, override_theme, override_levels=False):
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2011-03-28 18:12:46 +00:00
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"""
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Set the appropriate theme depending on the theme level.
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Called by the service item when building a display frame
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``theme``
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The name of the song-level theme. None means the service
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item wants to use the given value.
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2011-04-01 04:48:09 +00:00
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``override_levels``
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2011-03-28 18:12:46 +00:00
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Used to force the theme data passed in to be used.
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"""
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2011-04-03 06:19:03 +00:00
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log.debug(u'set override theme to %s', override_theme)
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2011-03-28 18:12:46 +00:00
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theme_level = self.theme_level
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2011-04-01 04:48:09 +00:00
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if override_levels:
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2011-03-28 18:12:46 +00:00
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theme_level = ThemeLevel.Song
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if theme_level == ThemeLevel.Global:
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2011-04-03 06:19:03 +00:00
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theme = self.global_theme
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2011-03-28 18:12:46 +00:00
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elif theme_level == ThemeLevel.Service:
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if self.service_theme == u'':
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2011-04-03 06:19:03 +00:00
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theme = self.global_theme
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2011-03-28 18:12:46 +00:00
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else:
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2011-04-03 06:19:03 +00:00
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theme = self.service_theme
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2011-03-28 18:12:46 +00:00
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else:
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# Images have a theme of -1
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2011-04-03 06:19:03 +00:00
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if override_theme and override_theme != -1:
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theme = override_theme
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2011-03-28 18:12:46 +00:00
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elif theme_level == ThemeLevel.Song or \
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theme_level == ThemeLevel.Service:
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if self.service_theme == u'':
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2011-04-03 06:19:03 +00:00
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theme = self.global_theme
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2011-03-28 18:12:46 +00:00
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else:
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2011-04-03 06:19:03 +00:00
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theme = self.service_theme
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2011-03-28 18:12:46 +00:00
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else:
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2011-04-03 06:19:03 +00:00
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theme = self.global_theme
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log.debug(u'theme is now %s', theme)
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2011-03-28 18:12:46 +00:00
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# Force the theme to be the one passed in.
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2011-04-01 04:48:09 +00:00
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if override_levels:
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2011-04-03 06:19:03 +00:00
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self.theme_data = override_theme
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2011-03-28 18:12:46 +00:00
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else:
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2011-06-27 11:51:25 +00:00
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self.theme_data = self.themeManager.getThemeData(theme)
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2011-08-05 08:43:32 +00:00
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self._calculate_default()
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2011-03-28 18:12:46 +00:00
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self._build_text_rectangle(self.theme_data)
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2011-05-15 13:42:12 +00:00
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# if No file do not update cache
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if self.theme_data.background_filename:
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2011-06-23 13:32:32 +00:00
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self.imageManager.add_image(self.theme_data.theme_name,
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2011-08-20 11:45:06 +00:00
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self.theme_data.background_filename, u'theme',
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QtGui.QColor(self.theme_data.background_border_color))
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2011-03-28 18:12:46 +00:00
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return self._rect, self._rect_footer
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def generate_preview(self, theme_data, force_page=False):
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"""
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Generate a preview of a theme.
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``theme_data``
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The theme to generated a preview for.
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``force_page``
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Flag to tell message lines per page need to be generated.
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"""
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log.debug(u'generate preview')
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# save value for use in format_slide
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self.force_page = force_page
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# set the default image size for previews
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2011-08-05 08:43:32 +00:00
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self._calculate_default()
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2011-03-28 18:12:46 +00:00
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# build a service item to generate preview
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serviceItem = ServiceItem()
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serviceItem.theme = theme_data
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if self.force_page:
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# make big page for theme edit dialog to get line count
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2011-09-26 18:26:13 +00:00
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serviceItem.add_from_text(u'', VERSE_FOR_LINE_COUNT)
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2011-03-28 18:12:46 +00:00
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else:
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2011-06-23 13:32:32 +00:00
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self.imageManager.del_image(theme_data.theme_name)
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2011-05-11 22:32:25 +00:00
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serviceItem.add_from_text(u'', VERSE)
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2011-03-29 16:25:48 +00:00
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serviceItem.renderer = self
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2011-03-28 18:12:46 +00:00
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serviceItem.raw_footer = FOOTER
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serviceItem.render(True)
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if not self.force_page:
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self.display.buildHtml(serviceItem)
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raw_html = serviceItem.get_rendered_frame(0)
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2011-10-03 17:27:34 +00:00
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self.display.text(raw_html)
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preview = self.display.preview()
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2011-03-28 18:12:46 +00:00
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# Reset the real screen size for subsequent render requests
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2011-08-05 08:43:32 +00:00
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self._calculate_default()
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2011-03-28 18:12:46 +00:00
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return preview
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2011-06-13 09:47:18 +00:00
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self.force_page = False
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2011-03-28 18:12:46 +00:00
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2011-06-13 08:16:50 +00:00
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def format_slide(self, text, item):
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2011-03-28 18:12:46 +00:00
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"""
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Calculate how much text can fit on a slide.
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2011-04-03 06:19:03 +00:00
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``text``
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2011-03-28 18:12:46 +00:00
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The words to go on the slides.
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2011-06-13 08:16:50 +00:00
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``item``
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2011-06-13 09:47:18 +00:00
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The :class:`~openlp.core.lib.serviceitem.ServiceItem` item object.
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2011-03-28 18:12:46 +00:00
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"""
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log.debug(u'format slide')
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2011-06-13 08:16:50 +00:00
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# Add line endings after each line of text used for bibles.
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2011-07-16 09:00:30 +00:00
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line_end = u'<br>'
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2011-06-13 08:16:50 +00:00
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if item.is_capable(ItemCapabilities.NoLineBreaks):
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line_end = u' '
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2011-06-13 11:26:06 +00:00
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# Bibles
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2011-08-31 07:49:57 +00:00
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if item.is_capable(ItemCapabilities.CanWordSplit):
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2011-08-05 08:10:53 +00:00
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pages = self._paginate_slide_words(text.split(u'\n'), line_end)
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2011-09-24 12:54:27 +00:00
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# Songs and Custom
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elif item.is_capable(ItemCapabilities.CanSoftBreak):
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pages = []
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2011-09-26 16:25:22 +00:00
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if u'[---]' in text:
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2011-08-28 15:53:27 +00:00
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while True:
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2011-08-30 13:35:06 +00:00
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slides = text.split(u'\n[---]\n', 2)
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# If there are (at least) two occurrences of [---] we use
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2011-08-30 15:12:16 +00:00
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# the first two slides (and neglect the last for now).
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2011-08-30 13:35:06 +00:00
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if len(slides) == 3:
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html_text = expand_tags(u'\n'.join(slides[:2]))
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# We check both slides to determine if the virtual break is
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2011-08-30 15:12:16 +00:00
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# needed (there is only one virtual break).
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2011-08-30 13:35:06 +00:00
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else:
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html_text = expand_tags(u'\n'.join(slides))
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2011-08-28 15:53:27 +00:00
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html_text = html_text.replace(u'\n', u'<br>')
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if self._text_fits_on_slide(html_text):
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2011-08-28 16:04:18 +00:00
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# The first two virtual slides fit (as a whole) on one
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2011-08-30 15:12:16 +00:00
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# slide. Replace the first occurrence of [---].
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2011-08-30 13:35:06 +00:00
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text = text.replace(u'\n[---]', u'', 1)
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2011-08-28 15:53:27 +00:00
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else:
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2011-08-30 15:15:39 +00:00
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# The first virtual slide fits, which means we have to
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# render the first virtual slide.
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text_contains_break = u'[---]' in text
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if text_contains_break:
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2011-11-02 18:58:46 +00:00
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try:
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text_to_render, text = \
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text.split(u'\n[---]\n', 1)
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except:
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text_to_render = text.split(u'\n[---]\n')[0]
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text = u''
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2011-08-23 19:57:29 +00:00
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else:
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2011-08-30 15:12:16 +00:00
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text_to_render = text
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text = u''
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lines = text_to_render.strip(u'\n').split(u'\n')
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slides = self._paginate_slide(lines, line_end)
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if len(slides) > 1 and text:
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2011-08-30 15:15:39 +00:00
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# Add all slides apart from the last one the list.
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2011-08-30 15:12:16 +00:00
|
|
|
pages.extend(slides[:-1])
|
|
|
|
if text_contains_break:
|
|
|
|
text = slides[-1] + u'\n[---]\n' + text
|
2011-08-28 17:46:52 +00:00
|
|
|
else:
|
2011-08-30 15:12:16 +00:00
|
|
|
text = slides[-1] + u'\n'+ text
|
|
|
|
text = text.replace(u'<br>', u'\n')
|
|
|
|
else:
|
|
|
|
pages.extend(slides)
|
2011-08-28 15:53:27 +00:00
|
|
|
if u'[---]' not in text:
|
2011-08-29 20:56:07 +00:00
|
|
|
lines = text.strip(u'\n').split(u'\n')
|
2011-06-13 11:26:06 +00:00
|
|
|
pages.extend(self._paginate_slide(lines, line_end))
|
2011-08-28 15:53:27 +00:00
|
|
|
break
|
2011-09-24 12:54:27 +00:00
|
|
|
else:
|
|
|
|
# Clean up line endings.
|
|
|
|
pages = self._paginate_slide(text.split(u'\n'), line_end)
|
2011-09-26 16:57:32 +00:00
|
|
|
else:
|
|
|
|
pages = self._paginate_slide(text.split(u'\n'), line_end)
|
2011-06-13 09:05:22 +00:00
|
|
|
new_pages = []
|
|
|
|
for page in pages:
|
2011-07-16 09:00:30 +00:00
|
|
|
while page.endswith(u'<br>'):
|
|
|
|
page = page[:-4]
|
2011-06-13 09:05:22 +00:00
|
|
|
new_pages.append(page)
|
|
|
|
return new_pages
|
2011-03-28 18:12:46 +00:00
|
|
|
|
2011-08-05 08:43:32 +00:00
|
|
|
def _calculate_default(self):
|
2011-03-28 18:12:46 +00:00
|
|
|
"""
|
|
|
|
Calculate the default dimentions of the screen.
|
|
|
|
"""
|
2011-08-05 08:47:31 +00:00
|
|
|
screen_size = self.screens.current[u'size']
|
|
|
|
self.width = screen_size.width()
|
|
|
|
self.height = screen_size.height()
|
2011-03-28 18:12:46 +00:00
|
|
|
self.screen_ratio = float(self.height) / float(self.width)
|
2011-08-05 08:47:31 +00:00
|
|
|
log.debug(u'_calculate default %s, %f' % (screen_size,
|
|
|
|
self.screen_ratio))
|
2011-03-28 18:12:46 +00:00
|
|
|
# 90% is start of footer
|
|
|
|
self.footer_start = int(self.height * 0.90)
|
|
|
|
|
|
|
|
def _build_text_rectangle(self, theme):
|
|
|
|
"""
|
|
|
|
Builds a text block using the settings in ``theme``
|
|
|
|
and the size of the display screen.height.
|
2011-04-25 06:44:04 +00:00
|
|
|
Note the system has a 10 pixel border round the screen
|
2011-03-28 18:12:46 +00:00
|
|
|
|
|
|
|
``theme``
|
|
|
|
The theme to build a text block for.
|
|
|
|
"""
|
|
|
|
log.debug(u'_build_text_rectangle')
|
2011-09-28 17:39:26 +00:00
|
|
|
main_rect = self.get_main_rectangle(theme)
|
2011-10-12 04:51:03 +00:00
|
|
|
footer_rect = self.get_footer_rectangle(theme)
|
2011-09-28 17:39:26 +00:00
|
|
|
self._set_text_rectangle(main_rect, footer_rect)
|
|
|
|
|
|
|
|
def get_main_rectangle(self, theme):
|
|
|
|
"""
|
2011-10-03 16:53:54 +00:00
|
|
|
Calculates the placement and size of the main rectangle.
|
2011-09-28 17:39:26 +00:00
|
|
|
|
|
|
|
``theme``
|
|
|
|
The theme information
|
|
|
|
"""
|
2011-03-28 18:12:46 +00:00
|
|
|
if not theme.font_main_override:
|
2011-09-28 17:39:26 +00:00
|
|
|
return QtCore.QRect(10, 0, self.width - 20, self.footer_start)
|
2011-03-28 18:12:46 +00:00
|
|
|
else:
|
2011-09-28 17:39:26 +00:00
|
|
|
return QtCore.QRect(theme.font_main_x, theme.font_main_y,
|
2011-03-28 18:12:46 +00:00
|
|
|
theme.font_main_width - 1, theme.font_main_height - 1)
|
2011-09-28 17:39:26 +00:00
|
|
|
|
|
|
|
def get_footer_rectangle(self, theme):
|
|
|
|
"""
|
2011-10-03 16:53:54 +00:00
|
|
|
Calculates the placement and size of the footer rectangle.
|
2011-09-28 17:39:26 +00:00
|
|
|
|
|
|
|
``theme``
|
|
|
|
The theme information
|
|
|
|
"""
|
2011-03-28 18:12:46 +00:00
|
|
|
if not theme.font_footer_override:
|
2011-09-28 17:39:26 +00:00
|
|
|
return QtCore.QRect(10, self.footer_start, self.width - 20,
|
2011-03-28 18:12:46 +00:00
|
|
|
self.height - self.footer_start)
|
|
|
|
else:
|
2011-09-28 17:39:26 +00:00
|
|
|
return QtCore.QRect(theme.font_footer_x,
|
2011-03-28 18:12:46 +00:00
|
|
|
theme.font_footer_y, theme.font_footer_width - 1,
|
|
|
|
theme.font_footer_height - 1)
|
|
|
|
|
|
|
|
def _set_text_rectangle(self, rect_main, rect_footer):
|
|
|
|
"""
|
|
|
|
Sets the rectangle within which text should be rendered.
|
|
|
|
|
|
|
|
``rect_main``
|
|
|
|
The main text block.
|
|
|
|
|
|
|
|
``rect_footer``
|
|
|
|
The footer text block.
|
|
|
|
"""
|
2011-06-06 17:35:47 +00:00
|
|
|
log.debug(u'_set_text_rectangle %s , %s' % (rect_main, rect_footer))
|
2011-03-28 18:12:46 +00:00
|
|
|
self._rect = rect_main
|
|
|
|
self._rect_footer = rect_footer
|
|
|
|
self.page_width = self._rect.width()
|
|
|
|
self.page_height = self._rect.height()
|
|
|
|
if self.theme_data.font_main_shadow:
|
|
|
|
self.page_width -= int(self.theme_data.font_main_shadow_size)
|
|
|
|
self.page_height -= int(self.theme_data.font_main_shadow_size)
|
|
|
|
self.web = QtWebKit.QWebView()
|
|
|
|
self.web.setVisible(False)
|
|
|
|
self.web.resize(self.page_width, self.page_height)
|
|
|
|
self.web_frame = self.web.page().mainFrame()
|
|
|
|
# Adjust width and height to account for shadow. outline done in css
|
2011-07-30 06:33:51 +00:00
|
|
|
html = u"""<!DOCTYPE html><html><head><script>
|
|
|
|
function show_text(newtext) {
|
|
|
|
var main = document.getElementById('main');
|
|
|
|
main.innerHTML = newtext;
|
2011-08-05 08:10:53 +00:00
|
|
|
// We need to be sure that the page is loaded, that is why we
|
|
|
|
// return the element's height (even though we do not use the
|
|
|
|
// returned value).
|
|
|
|
return main.offsetHeight;
|
2011-07-30 06:33:51 +00:00
|
|
|
}
|
2011-08-05 07:41:20 +00:00
|
|
|
</script><style>*{margin: 0; padding: 0; border: 0;}
|
|
|
|
#main {position: absolute; top: 0px; %s %s}</style></head><body>
|
2011-07-30 06:33:51 +00:00
|
|
|
<div id="main"></div></body></html>""" % \
|
2011-03-28 18:12:46 +00:00
|
|
|
(build_lyrics_format_css(self.theme_data, self.page_width,
|
|
|
|
self.page_height), build_lyrics_outline_css(self.theme_data))
|
2011-07-30 06:33:51 +00:00
|
|
|
self.web.setHtml(html)
|
2011-03-28 18:12:46 +00:00
|
|
|
|
2011-06-13 08:16:50 +00:00
|
|
|
def _paginate_slide(self, lines, line_end):
|
2011-03-28 18:12:46 +00:00
|
|
|
"""
|
|
|
|
Figure out how much text can appear on a slide, using the current
|
|
|
|
theme settings.
|
2011-08-05 08:10:53 +00:00
|
|
|
**Note:** The smallest possible "unit" of text for a slide is one line.
|
|
|
|
If the line is too long it will be cut off when displayed.
|
2011-03-28 18:12:46 +00:00
|
|
|
|
|
|
|
``lines``
|
2011-06-13 08:16:50 +00:00
|
|
|
The text to be fitted on the slide split into lines.
|
2011-03-28 18:12:46 +00:00
|
|
|
|
2011-06-13 08:16:50 +00:00
|
|
|
``line_end``
|
2011-07-16 09:00:30 +00:00
|
|
|
The text added after each line. Either ``u' '`` or ``u'<br>``.
|
2011-03-28 18:12:46 +00:00
|
|
|
"""
|
2011-04-26 17:03:19 +00:00
|
|
|
log.debug(u'_paginate_slide - Start')
|
2011-03-28 18:12:46 +00:00
|
|
|
formatted = []
|
2011-06-12 19:27:19 +00:00
|
|
|
previous_html = u''
|
|
|
|
previous_raw = u''
|
2011-07-16 09:00:30 +00:00
|
|
|
separator = u'<br>'
|
2011-06-12 19:27:19 +00:00
|
|
|
html_lines = map(expand_tags, lines)
|
2011-06-12 18:38:04 +00:00
|
|
|
# Text too long so go to next page.
|
2011-08-26 15:22:57 +00:00
|
|
|
if not self._text_fits_on_slide(separator.join(html_lines)):
|
2011-06-13 08:16:50 +00:00
|
|
|
html_text, previous_raw = self._binary_chop(formatted,
|
2011-06-13 11:20:47 +00:00
|
|
|
previous_html, previous_raw, html_lines, lines, separator, u'')
|
2011-06-12 18:38:04 +00:00
|
|
|
else:
|
2011-06-13 11:20:47 +00:00
|
|
|
previous_raw = separator.join(lines)
|
2011-06-12 19:27:19 +00:00
|
|
|
if previous_raw:
|
|
|
|
formatted.append(previous_raw)
|
2011-04-26 17:03:19 +00:00
|
|
|
log.debug(u'_paginate_slide - End')
|
2011-03-28 18:12:46 +00:00
|
|
|
return formatted
|
|
|
|
|
2011-08-05 08:10:53 +00:00
|
|
|
def _paginate_slide_words(self, lines, line_end):
|
2011-04-01 04:48:09 +00:00
|
|
|
"""
|
|
|
|
Figure out how much text can appear on a slide, using the current
|
2011-08-05 08:10:53 +00:00
|
|
|
theme settings.
|
|
|
|
**Note:** The smallest possible "unit" of text for a slide is one word.
|
|
|
|
If one line is too long it will be processed word by word. This is
|
|
|
|
sometimes need for **bible** verses.
|
2011-04-01 04:48:09 +00:00
|
|
|
|
2011-08-05 08:10:53 +00:00
|
|
|
``lines``
|
|
|
|
The text to be fitted on the slide split into lines.
|
2011-04-03 06:19:03 +00:00
|
|
|
|
2011-06-13 08:16:50 +00:00
|
|
|
``line_end``
|
2011-07-16 09:00:30 +00:00
|
|
|
The text added after each line. Either ``u' '`` or ``u'<br>``.
|
2011-08-05 08:10:53 +00:00
|
|
|
This is needed for **bibles**.
|
2011-04-01 04:48:09 +00:00
|
|
|
"""
|
2011-04-26 17:03:19 +00:00
|
|
|
log.debug(u'_paginate_slide_words - Start')
|
2011-04-01 04:48:09 +00:00
|
|
|
formatted = []
|
2011-04-26 17:03:19 +00:00
|
|
|
previous_html = u''
|
|
|
|
previous_raw = u''
|
2011-04-01 04:48:09 +00:00
|
|
|
for line in lines:
|
2011-05-23 17:28:52 +00:00
|
|
|
line = line.strip()
|
2011-06-13 09:05:22 +00:00
|
|
|
html_line = expand_tags(line)
|
2011-05-23 18:41:49 +00:00
|
|
|
# Text too long so go to next page.
|
2011-08-26 15:22:57 +00:00
|
|
|
if not self._text_fits_on_slide(previous_html + html_line):
|
2011-04-28 06:44:48 +00:00
|
|
|
# Check if there was a verse before the current one and append
|
|
|
|
# it, when it fits on the page.
|
|
|
|
if previous_html:
|
2011-08-26 15:22:57 +00:00
|
|
|
if self._text_fits_on_slide(previous_html):
|
2011-04-28 06:44:48 +00:00
|
|
|
formatted.append(previous_raw)
|
|
|
|
previous_html = u''
|
|
|
|
previous_raw = u''
|
|
|
|
# Now check if the current verse will fit, if it does
|
|
|
|
# not we have to start to process the verse word by
|
|
|
|
# word.
|
2011-08-26 15:22:57 +00:00
|
|
|
if self._text_fits_on_slide(html_line):
|
2011-06-13 09:05:22 +00:00
|
|
|
previous_html = html_line + line_end
|
2011-04-28 06:44:48 +00:00
|
|
|
previous_raw = line + line_end
|
|
|
|
continue
|
2011-06-13 09:05:22 +00:00
|
|
|
# Figure out how many words of the line will fit on screen as
|
|
|
|
# the line will not fit as a whole.
|
2011-05-23 17:28:52 +00:00
|
|
|
raw_words = self._words_split(line)
|
2011-06-13 11:20:47 +00:00
|
|
|
html_words = map(expand_tags, raw_words)
|
2011-06-13 08:16:50 +00:00
|
|
|
previous_html, previous_raw = self._binary_chop(
|
2011-06-12 19:27:19 +00:00
|
|
|
formatted, previous_html, previous_raw, html_words,
|
2011-06-13 11:20:47 +00:00
|
|
|
raw_words, u' ', line_end)
|
2011-04-09 08:11:46 +00:00
|
|
|
else:
|
2011-06-13 09:05:22 +00:00
|
|
|
previous_html += html_line + line_end
|
2011-04-26 17:03:19 +00:00
|
|
|
previous_raw += line + line_end
|
|
|
|
formatted.append(previous_raw)
|
|
|
|
log.debug(u'_paginate_slide_words - End')
|
2011-04-01 04:48:09 +00:00
|
|
|
return formatted
|
|
|
|
|
2011-09-18 10:26:47 +00:00
|
|
|
def _get_start_tags(self, raw_text):
|
|
|
|
"""
|
|
|
|
Tests the given text for not closed formatting tags and returns a tuple
|
2011-09-19 16:00:27 +00:00
|
|
|
consisting of three unicode strings::
|
2011-09-18 10:26:47 +00:00
|
|
|
|
2011-09-19 16:13:38 +00:00
|
|
|
(u'{st}{r}Text text text{/r}{/st}', u'{st}{r}', u'<strong>
|
2011-09-19 16:00:27 +00:00
|
|
|
<span style="-webkit-text-fill-color:red">')
|
2011-09-18 10:26:47 +00:00
|
|
|
|
2011-09-19 16:00:27 +00:00
|
|
|
The first unicode string is the text, with correct closing tags. The
|
|
|
|
second unicode string are OpenLP's opening formatting tags and the third
|
|
|
|
unicode string the html opening formatting tags.
|
2011-09-18 10:26:47 +00:00
|
|
|
|
|
|
|
``raw_text``
|
|
|
|
The text to test. The text must **not** contain html tags, only
|
2011-09-19 16:00:27 +00:00
|
|
|
OpenLP formatting tags are allowed::
|
|
|
|
|
|
|
|
{st}{r}Text text text
|
2011-09-18 10:26:47 +00:00
|
|
|
"""
|
|
|
|
raw_tags = []
|
|
|
|
html_tags = []
|
2011-09-06 11:56:52 +00:00
|
|
|
for tag in FormattingTags.get_html_tags():
|
2011-09-18 10:26:47 +00:00
|
|
|
if tag[u'start tag'] == u'{br}':
|
2011-09-06 11:56:52 +00:00
|
|
|
continue
|
2011-09-20 15:50:43 +00:00
|
|
|
if raw_text.count(tag[u'start tag']) != \
|
|
|
|
raw_text.count(tag[u'end tag']):
|
2011-09-18 10:26:47 +00:00
|
|
|
raw_tags.append(
|
2011-09-19 16:00:27 +00:00
|
|
|
(raw_text.find(tag[u'start tag']), tag[u'start tag'],
|
|
|
|
tag[u'end tag']))
|
2011-09-18 10:26:47 +00:00
|
|
|
html_tags.append(
|
2011-09-19 16:00:27 +00:00
|
|
|
(raw_text.find(tag[u'start tag']), tag[u'start html']))
|
2011-09-18 10:26:47 +00:00
|
|
|
# Sort the lists, so that the tags which were opened first on the first
|
|
|
|
# slide (the text we are checking) will be opened first on the next
|
|
|
|
# slide as well.
|
2011-09-19 16:00:27 +00:00
|
|
|
raw_tags.sort(key=lambda tag: tag[0])
|
|
|
|
html_tags.sort(key=lambda tag: tag[0])
|
|
|
|
# Create a list with closing tags for the raw_text.
|
|
|
|
end_tags = [tag[2] for tag in raw_tags]
|
|
|
|
end_tags.reverse()
|
2011-09-18 10:26:47 +00:00
|
|
|
# Remove the indexes.
|
2011-09-19 16:00:27 +00:00
|
|
|
raw_tags = [tag[1] for tag in raw_tags]
|
|
|
|
html_tags = [tag[1] for tag in html_tags]
|
|
|
|
return raw_text + u''.join(end_tags), u''.join(raw_tags), \
|
|
|
|
u''.join(html_tags)
|
2011-09-06 11:56:52 +00:00
|
|
|
|
2011-06-12 19:27:19 +00:00
|
|
|
def _binary_chop(self, formatted, previous_html, previous_raw, html_list,
|
2011-06-13 11:20:47 +00:00
|
|
|
raw_list, separator, line_end):
|
2011-06-12 18:38:04 +00:00
|
|
|
"""
|
2011-06-13 12:59:52 +00:00
|
|
|
This implements the binary chop algorithm for faster rendering. This
|
|
|
|
algorithm works line based (line by line) and word based (word by word).
|
2011-06-13 14:36:18 +00:00
|
|
|
It is assumed that this method is **only** called, when the lines/words
|
2011-06-23 14:34:43 +00:00
|
|
|
to be rendered do **not** fit as a whole.
|
2011-06-12 18:38:04 +00:00
|
|
|
|
|
|
|
``formatted``
|
2011-06-13 12:59:52 +00:00
|
|
|
The list to append any slides.
|
2011-06-12 18:38:04 +00:00
|
|
|
|
|
|
|
``previous_html``
|
|
|
|
The html text which is know to fit on a slide, but is not yet added
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2011-06-12 19:27:19 +00:00
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to the list of slides. (unicode string)
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2011-06-12 18:38:04 +00:00
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``previous_raw``
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2011-07-30 07:19:16 +00:00
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The raw text (with formatting tags) which is know to fit on a slide,
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2011-06-12 19:27:19 +00:00
|
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but is not yet added to the list of slides. (unicode string)
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``html_list``
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2011-06-13 12:59:52 +00:00
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The elements which do not fit on a slide and needs to be processed
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2011-06-13 09:47:18 +00:00
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using the binary chop. The text contains html.
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2011-06-12 18:38:04 +00:00
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2011-06-12 19:27:19 +00:00
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``raw_list``
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2011-06-13 12:59:52 +00:00
|
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The elements which do not fit on a slide and needs to be processed
|
2011-07-30 07:19:16 +00:00
|
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|
using the binary chop. The elements can contain formatting tags.
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2011-06-12 18:38:04 +00:00
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2011-06-13 11:20:47 +00:00
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``separator``
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2011-07-16 09:00:30 +00:00
|
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The separator for the elements. For lines this is ``u'<br>'`` and
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2011-06-23 14:34:43 +00:00
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for words this is ``u' '``.
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2011-06-13 11:20:47 +00:00
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2011-06-12 18:38:04 +00:00
|
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``line_end``
|
2011-06-13 11:20:47 +00:00
|
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|
The text added after each "element line". Either ``u' '`` or
|
2011-07-16 09:00:30 +00:00
|
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|
``u'<br>``. This is needed for bibles.
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2011-06-12 18:38:04 +00:00
|
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"""
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smallest_index = 0
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2011-06-12 19:27:19 +00:00
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highest_index = len(html_list) - 1
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2011-06-12 18:38:04 +00:00
|
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index = int(highest_index / 2)
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|
|
|
while True:
|
2011-08-26 15:22:57 +00:00
|
|
|
if not self._text_fits_on_slide(
|
2011-07-30 06:33:51 +00:00
|
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|
previous_html + separator.join(html_list[:index + 1]).strip()):
|
2011-06-12 18:38:04 +00:00
|
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|
# We know that it does not fit, so change/calculate the
|
|
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|
# new index and highest_index accordingly.
|
|
|
|
highest_index = index
|
|
|
|
index = int(index - (index - smallest_index) / 2)
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else:
|
|
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|
smallest_index = index
|
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|
index = int(index + (highest_index - index) / 2)
|
|
|
|
# We found the number of words which will fit.
|
|
|
|
if smallest_index == index or highest_index == index:
|
|
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|
index = smallest_index
|
2011-09-06 11:56:52 +00:00
|
|
|
text = previous_raw.rstrip(u'<br>') + \
|
|
|
|
separator.join(raw_list[:index + 1])
|
2011-09-19 16:00:27 +00:00
|
|
|
text, raw_tags, html_tags = self._get_start_tags(text)
|
2011-09-06 11:56:52 +00:00
|
|
|
formatted.append(text)
|
2011-06-12 18:38:04 +00:00
|
|
|
previous_html = u''
|
|
|
|
previous_raw = u''
|
2011-06-13 08:16:50 +00:00
|
|
|
# Stop here as the theme line count was requested.
|
|
|
|
if self.force_page:
|
|
|
|
Receiver.send_message(u'theme_line_count', index + 1)
|
|
|
|
break
|
2011-06-12 18:38:04 +00:00
|
|
|
else:
|
|
|
|
continue
|
2011-06-13 12:59:52 +00:00
|
|
|
# Check if the remaining elements fit on the slide.
|
2011-08-26 15:22:57 +00:00
|
|
|
if self._text_fits_on_slide(
|
2011-09-06 11:56:52 +00:00
|
|
|
html_tags + separator.join(html_list[index + 1:]).strip()):
|
|
|
|
previous_html = html_tags + separator.join(
|
2011-06-13 11:20:47 +00:00
|
|
|
html_list[index + 1:]).strip() + line_end
|
2011-09-06 11:56:52 +00:00
|
|
|
previous_raw = raw_tags + separator.join(
|
2011-06-13 11:20:47 +00:00
|
|
|
raw_list[index + 1:]).strip() + line_end
|
2011-06-12 18:38:04 +00:00
|
|
|
break
|
|
|
|
else:
|
2011-06-13 12:59:52 +00:00
|
|
|
# The remaining elements do not fit, thus reset the indexes,
|
|
|
|
# create a new list and continue.
|
2011-06-12 19:27:19 +00:00
|
|
|
raw_list = raw_list[index + 1:]
|
2011-09-06 11:56:52 +00:00
|
|
|
raw_list[0] = raw_tags + raw_list[0]
|
2011-06-12 19:27:19 +00:00
|
|
|
html_list = html_list[index + 1:]
|
2011-09-06 11:56:52 +00:00
|
|
|
html_list[0] = html_tags + html_list[0]
|
2011-06-12 18:38:04 +00:00
|
|
|
smallest_index = 0
|
2011-06-12 19:27:19 +00:00
|
|
|
highest_index = len(html_list) - 1
|
2011-06-12 18:38:04 +00:00
|
|
|
index = int(highest_index / 2)
|
2011-06-13 08:16:50 +00:00
|
|
|
return previous_html, previous_raw
|
2011-06-12 18:38:04 +00:00
|
|
|
|
2011-07-30 06:33:51 +00:00
|
|
|
def _text_fits_on_slide(self, text):
|
|
|
|
"""
|
2011-08-05 08:10:53 +00:00
|
|
|
Checks if the given ``text`` fits on a slide. If it does ``True`` is
|
2011-07-30 06:33:51 +00:00
|
|
|
returned, otherwise ``False``.
|
|
|
|
|
|
|
|
``text``
|
2011-08-23 19:57:29 +00:00
|
|
|
The text to check. It may contain HTML tags.
|
2011-07-30 06:33:51 +00:00
|
|
|
"""
|
|
|
|
self.web_frame.evaluateJavaScript(u'show_text("%s")' %
|
|
|
|
text.replace(u'\\', u'\\\\').replace(u'\"', u'\\\"'))
|
2011-08-26 15:22:57 +00:00
|
|
|
return self.web_frame.contentsSize().height() <= self.page_height
|
2011-07-30 06:33:51 +00:00
|
|
|
|
2011-04-26 19:09:56 +00:00
|
|
|
def _words_split(self, line):
|
2011-03-28 18:12:46 +00:00
|
|
|
"""
|
|
|
|
Split the slide up by word so can wrap better
|
|
|
|
"""
|
2011-04-08 15:35:33 +00:00
|
|
|
# this parse we are to be wordy
|
2011-04-26 19:09:56 +00:00
|
|
|
line = line.replace(u'\n', u' ')
|
2011-06-13 11:20:47 +00:00
|
|
|
return line.split(u' ')
|