mirror of https://gitlab.com/openlp/openlp.git
260 lines
9.5 KiB
Python
260 lines
9.5 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2010 Raoul Snyman #
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# Portions copyright (c) 2008-2010 Tim Bentley, Jonathan Corwin, Michael #
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# Gorven, Scott Guerrieri, Maikel Stuivenberg, Martin Thompson, Jon Tibble, #
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# Carsten Tinggaard #
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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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import os
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import logging
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if os.name == u'nt':
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from win32com.client import Dispatch
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import _winreg
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import win32ui
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from presentationcontroller import PresentationController
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# PPT API documentation:
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# http://msdn.microsoft.com/en-us/library/aa269321(office.10).aspx
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class PowerpointController(PresentationController):
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"""
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Class to control interactions with PowerPoint Presentations
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It creates the runtime Environment , Loads the and Closes the Presentation
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As well as triggering the correct activities based on the users input
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"""
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global log
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log = logging.getLogger(u'PowerpointController')
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log.info(u'loaded')
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def __init__(self, plugin):
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"""
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Initialise the class
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"""
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log.debug(u'Initialising')
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PresentationController.__init__(self, plugin, u'Powerpoint')
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self.supports= [u'.ppt', u'.pps']
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self.process = None
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self.presentation = None
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def check_available(self):
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"""
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PowerPoint is able to run on this machine
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"""
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log.debug(u'check_available')
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if os.name == u'nt':
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try:
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_winreg.OpenKey(_winreg.HKEY_CLASSES_ROOT, u'PowerPoint.Application').Close()
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return True
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except:
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pass
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return False
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if os.name == u'nt':
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def start_process(self):
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"""
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Loads PowerPoint process
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"""
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self.process = Dispatch(u'PowerPoint.Application')
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self.process.Visible = True
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self.process.WindowState = 2
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def is_loaded(self):
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"""
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Returns true if a presentation is loaded
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"""
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try:
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if not self.process.Visible:
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return False
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if self.process.Windows.Count == 0:
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return False
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if self.process.Presentations.Count == 0:
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return False
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except:
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return False
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return True
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def kill(self):
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"""
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Called at system exit to clean up any running presentations
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"""
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if self.process is None:
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return
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try:
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self.process.Quit()
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except:
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pass
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self.process = None
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def load_presentation(self, presentation):
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"""
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Called when a presentation is added to the SlideController.
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It builds the environment, starts communcations with the background
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OpenOffice task started earlier. If OpenOffice is not present is is
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started. Once the environment is available the presentation is loaded
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and started.
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``presentation``
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The file name of the presentations to run.
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"""
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log.debug(u'LoadPresentation')
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self.store_filename(presentation)
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try:
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if not self.process.Visible:
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self.start_process()
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except:
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self.start_process()
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try:
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self.process.Presentations.Open(presentation, False, False, True)
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except:
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return
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self.presentation = self.process.Presentations(self.process.Presentations.Count)
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self.create_thumbnails()
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def create_thumbnails(self):
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"""
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Create the thumbnail images for the current presentation.
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Note an alternative and quicker method would be do
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self.presentation.Slides[n].Copy()
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thumbnail = QApplication.clipboard.image()
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But for now we want a physical file since it makes
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life easier elsewhere
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"""
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if self.check_thumbnails():
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return
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self.presentation.Export(os.path.join(self.thumbnailpath, '')
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, 'png', 600, 480)
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def close_presentation(self):
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"""
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Close presentation and clean up objects
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Triggerent by new object being added to SlideController orOpenLP
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being shut down
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"""
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if self.presentation == None:
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return
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try:
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self.presentation.Close()
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except:
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pass
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self.presentation = None
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def is_active(self):
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"""
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Returns true if a presentation is currently active
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"""
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if not self.is_loaded():
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return False
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try:
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if self.presentation.SlideShowWindow == None:
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return False
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if self.presentation.SlideShowWindow.View == None:
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return False
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except:
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return False
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return True
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def unblank_screen(self):
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"""
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Unblanks (restores) the presentationn
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"""
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self.presentation.SlideShowSettings.Run()
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self.presentation.SlideShowWindow.View.State = 1
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self.presentation.SlideShowWindow.Activate()
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def blank_screen(self):
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"""
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Blanks the screen
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"""
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self.presentation.SlideShowWindow.View.State = 3
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def stop_presentation(self):
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"""
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Stops the current presentation and hides the output
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"""
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self.presentation.SlideShowWindow.View.Exit()
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def start_presentation(self):
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"""
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Starts a presentation from the beginning
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"""
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#SlideShowWindow measures its size/position by points, not pixels
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try:
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dpi = win32ui.GetActiveWindow().GetDC().GetDeviceCaps(88)
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except:
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try:
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dpi = win32ui.GetForegroundWindow().GetDC().GetDeviceCaps(88)
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except:
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dpi = 96
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self.presentation.SlideShowSettings.Run()
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self.presentation.SlideShowWindow.View.GotoSlide(1)
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rendermanager = self.plugin.render_manager
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rect = rendermanager.screens.current[u'size']
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self.presentation.SlideShowWindow.Top = rect.y() * 72 / dpi
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self.presentation.SlideShowWindow.Height = rect.height() * 72 / dpi
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self.presentation.SlideShowWindow.Left = rect.x() * 72 / dpi
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self.presentation.SlideShowWindow.Width = rect.width() * 72 / dpi
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def get_slide_number(self):
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"""
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Returns the current slide number
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"""
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return self.presentation.SlideShowWindow.View.CurrentShowPosition
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def get_slide_count(self):
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"""
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Returns total number of slides
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"""
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return self.presentation.Slides.Count
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def goto_slide(self, slideno):
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"""
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Moves to a specific slide in the presentation
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"""
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self.presentation.SlideShowWindow.View.GotoSlide(slideno)
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def next_step(self):
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"""
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Triggers the next effect of slide on the running presentation
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"""
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self.presentation.SlideShowWindow.View.Next()
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def previous_step(self):
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"""
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Triggers the previous slide on the running presentation
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"""
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self.presentation.SlideShowWindow.View.Previous()
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def get_slide_preview_file(self, slide_no):
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"""
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Returns an image path containing a preview for the requested slide
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``slide_no``
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The slide an image is required for, starting at 1
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"""
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path = os.path.join(self.thumbnailpath,
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self.thumbnailprefix + unicode(slide_no) + u'.png')
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if os.path.isfile(path):
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return path
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else:
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return None
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