Source Code for Module camelot.camelot.view.controls.animation

  1  #  ================================================================================== 
  2  # 
  3  #  Copyright (C) 2007-2008 Conceptive Engineering bvba. All rights reserved. 
  4  #  www.conceptive.be / project-camelot@conceptive.be 
  5  # 
  6  #  This file is part of the Camelot Library. 
  7  # 
  8  #  This file may be used under the terms of the GNU General Public 
  9  #  License version 2.0 as published by the Free Software Foundation 
 10  #  and appearing in the file LICENSE.GPL included in the packaging of 
 11  #  this file.  Please review the following information to ensure GNU 
 12  #  General Public Licensing requirements will be met: 
 13  #  http://www.trolltech.com/products/qt/opensource.html 
 14  # 
 15  #  If you are unsure which license is appropriate for your use, please 
 16  #  review the following information: 
 17  #  http://www.trolltech.com/products/qt/licensing.html or contact 
 18  #  project-camelot@conceptive.be. 
 19  # 
 20  #  This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE 
 21  #  WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 
 22  # 
 23  #  For use of this library in commercial applications, please contact 
 24  #  project-camelot@conceptive.be 
 25  # 
 26  #  ================================================================================== 
 27   
 28  import logging 
 29   
 30  logger = logging.getLogger('animation') 
 31   
 32  from PyQt4 import QtGui 
 33  from PyQt4 import QtCore 
 34  from PyQt4.QtCore import Qt 
 35   
 36  from camelot.view import art 
 37   
 38 -class MovieWidget(QtGui.QLabel): 
 39    """Simulates a QMovie using a QLabel""" 
 40   
 41 -  def __init__(self, icons, parent=None): 
 42      logger.debug('creating movie widget') 
 43      super(MovieWidget, self).__init__(parent) 
 44      self.current_frame = 0 
 45      self.last_frame = len(icons) - 1 
 46      self.pixmaps = self._create_pixmaps(icons) 
 47      self.started = False 
 48   
 49 -  def _create_pixmaps(self, icons): 
 50      result = [] 
 51      for ic in icons: 
 52        px = QtGui.QPixmap(ic) 
 53        # scale to 16 x 16 
 54        #px = px.scaled(16, 16, Qt.KeepAspectRatio) 
 55        result.append(px) 
 56      return result 
 57   
 58 -  def startMovie(self): 
 59  #    logger.debug('movie started') 
 60  #    if self.started: 
 61  #      return 
 62  #    self.timerId = self.startTimer(80) # 80 milliseconds 
 63  #    self.started = True 
 64  #@attention: movie stuff was turned off, because it seems to crash the application sometimes, 
 65  #            according to google this could be a bug in QT 4.4, VLC seems to suffer the same 
 66  #            problem 
 67      pass 
 68   
 69 -  def stopMovie(self): 
 70  #    logger.debug('movie stopped') 
 71  #    if self.started: 
 72  #      self.killTimer(self.timerId) 
 73  #      self.started = False 
 74      pass 
 75   
 76 -  def timerEvent(self, event): 
 77      #logger.debug('changing movie frame') 
 78      self.setPixmap(self.pixmaps[self.current_frame]) 
 79      self.current_frame += 1 
 80      if self.current_frame > self.last_frame: 
 81        self.current_frame = 0 
 82   
 83 -class Throbber(MovieWidget): 
 84    """Spinning widget subclassing MovieWidget""" 
 85     
 86 -  def __init__(self, parent): 
 87      logger.debug('creating throbber') 
 88   
 89      icons = [art.file_('Throbber-small-anim1.png'),  
 90               art.file_('Throbber-small-anim2.png'), 
 91               art.file_('Throbber-small-anim3.png'), 
 92               art.file_('Throbber-small-anim4.png'), 
 93               art.file_('Throbber-small-anim5.png'), 
 94               art.file_('Throbber-small-anim6.png'), 
 95               art.file_('Throbber-small-anim7.png'), 
 96               art.file_('Throbber-small-anim8.png')] 
 97   
 98      super(Throbber, self).__init__(icons, parent) 
 99       
100      self.idle_pixmap = QtGui.QPixmap(art.file_('Throbber-small.png')) 
101      self._idle_state() 
102      parent.resize(parent.size()) 
103   
104 -  def _idle_state(self): 
105      self.setPixmap(self.idle_pixmap) 
106   
107 -  def process_working(self): 
108      logger.debug('Process is working') 
109      self.startMovie() 
110   
111 -  def process_idle(self): 
112      logger.debug('Process is idle') 
113      self.stopMovie() 
114      self._idle_state() 
115