Source Code for Module flumotion.component.effects.colorbalance.admin_gtk

  1  # -*- Mode: Python -*- 
  2  # vi:si:et:sw=4:sts=4:ts=4 
  3  # 
  4  # Flumotion - a streaming media server 
  5  # Copyright (C) 2004,2005,2006,2007,2008 Fluendo, S.L. (www.fluendo.com). 
  6  # All rights reserved. 
  7   
  8  # This file may be distributed and/or modified under the terms of 
  9  # the GNU General Public License version 2 as published by 
 10  # the Free Software Foundation. 
 11  # This file is distributed without any warranty; without even the implied 
 12  # warranty of merchantability or fitness for a particular purpose. 
 13  # See "LICENSE.GPL" in the source distribution for more information. 
 14   
 15  # Licensees having purchased or holding a valid Flumotion Advanced 
 16  # Streaming Server license may use this file in accordance with the 
 17  # Flumotion Advanced Streaming Server Commercial License Agreement. 
 18  # See "LICENSE.Flumotion" in the source distribution for more information. 
 19   
 20  # Headers in this file shall remain intact. 
 21   
 22  from flumotion.component.base.effectsnode import EffectAdminGtkNode 
 23   
 24  __version__ = "$Rev: 6785 $" 
 25   
 26   
 27 -class ColorbalanceAdminGtkNode(EffectAdminGtkNode): 
 28      logCategory = 'colorbalance' 
 29   
 30      gladeFile = 'flumotion/component/effects/colorbalance/colorbalance.glade' 
 31   
 32      # FIXME: the scale and the spinbutton should just be using the same 
 33      # adjustment 
 34   
 35 -    def haveWidgetTree(self): 
 36          self.widget = self.wtree.get_widget('widget-colorbalance') 
 37          self._createUI() 
 38   
 39 -    def _createUI(self): 
 40          for k in 'Hue', 'Saturation', 'Brightness', 'Contrast': 
 41              lower = k.lower() 
 42              scale = self.wtree.get_widget('scale-%s' % lower) 
 43              spinbutton = self.wtree.get_widget('spinbutton-%s' % lower) 
 44   
 45              value = 0.0 
 46   
 47              scale.set_value(value) 
 48              spinbutton.set_value(value) 
 49   
 50              scale_change_id = scale.connect('value-changed', 
 51                  self.cb_colorbalance_change, k) 
 52              spinbutton_change_id = spinbutton.connect('value-changed', 
 53                  self.cb_colorbalance_change, k) 
 54   
 55              setattr(self, 'scale_%s' % lower, scale) 
 56              setattr(self, 'spinbutton_%s' % lower, spinbutton) 
 57              setattr(self, '%s_scale_change_id' % lower, scale_change_id) 
 58              setattr(self, '%s_spinbutton_change_id' % lower, spinbutton_change_id) 
 59   
 60 -    def cb_colorbalance_change(self, widget, label): 
 61          value = widget.get_value() 
 62          self.debug('changing colorbalance %s to %f' % (label, value)) 
 63          # we do a first propertyChanged so the spinbutton and scale are synced 
 64          self.propertyChanged(label, value) 
 65          self.debug('informing effect of change') 
 66   
 67          def errback(failure, label): 
 68              self.warning("Failure %s changing colorbalance %s: %s", 
 69                           failure.type, label, failure.getErrorMessage()) 
 70          def callback(result, label): 
 71              self.debug("remote replied colorbalance %s changed to %f", 
 72                         label, result) 
 73   
 74          d = self.effectCallRemote("setColorBalanceProperty", label, value) 
 75          d.addErrback(errback, label) 
 76          d.addCallback(callback, label) 
 77   
 78 -    def setUIState(self, state): 
 79          EffectAdminGtkNode.setUIState(self, state) 
 80          for k in 'Hue', 'Saturation', 'Brightness', 'Contrast': 
 81              self.propertyChanged(k, state.get('colorbalance-%s' % k)) 
 82   
 83 -    def stateSet(self, state, key, value): 
 84          if key.startswith('colorbalance-'): 
 85              key = key[len('colorbalance-'):] 
 86              self.propertyChanged(key, value) 
 87   
 88 -    def propertyChanged(self, name, value): 
 89          self.debug('syncing colorbance property %s to %f' % (name, value)) 
 90   
 91          lower = name.lower() 
 92          scale = getattr(self, 'scale_%s' % lower) 
 93          spinbutton = getattr(self, 'spinbutton_%s' % lower) 
 94          scale_change_id = getattr(self, '%s_scale_change_id' % lower) 
 95          spinbutton_change_id = getattr(self, '%s_spinbutton_change_id' % lower) 
 96   
 97          scale.handler_block(scale_change_id) 
 98          scale.set_value(value) 
 99          scale.handler_unblock(scale_change_id) 
100          spinbutton.handler_block(spinbutton_change_id) 
101          spinbutton.set_value(value) 
102          spinbutton.handler_unblock(spinbutton_change_id) 
103