File indexing completed on 2024-12-01 12:33:49

 /*
     Large image displaying library.
 
     Copyright (C) 2004 Maks Orlovich (maksim@kde.org)
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
     in the Software without restriction, including without limitation the rights
     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     copies of the Software, and to permit persons to whom the Software is
     furnished to do so, subject to the following conditions:
 
     The above copyright notice and this permission notice shall be included in
     all copies or substantial portions of the Software.
 
     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
     AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
 #ifndef ANIM_PROVIDER_H
 #define ANIM_PROVIDER_H
 
 #include <khtml_settings.h>
 
 class QPainter;
 
 namespace khtmlImLoad
 {
 
 class PixmapPlane;
 class Image;
 
 /**
  A base class for animation support. This should be implemented by decoders
  wishing to implement animation. When this is installed, paint events
  for the image are redirected here.
 */
 class AnimProvider
 {
 protected:
     PixmapPlane *frame0;
     PixmapPlane *curFrame;
     Image       *image;
     bool         shouldSwitchFrame; //Set by AnimTimer
     KHTMLSettings::KAnimationAdvice animationAdvice;
 
     void nextFrame(); //Helper that goes to next frame or wraps around
 public:
     AnimProvider(PixmapPlane *plane, Image *img): frame0(plane), curFrame(plane),
         image(img), shouldSwitchFrame(false),
         animationAdvice(KHTMLSettings::KAnimationEnabled)
     {}
 
     void switchFrame();
 
     virtual ~AnimProvider();
 
     //Must be implemented to create animation provider for the given
     //plane describing the same animation
     virtual AnimProvider *clone(PixmapPlane *newParentPlane) = 0;
 
     //Must be implemented to paint the given region. Note that clipping to the
     //overall canvas will be performed already
     virtual void paint(int dx, int dy, QPainter *p, int sx, int sy, int width, int height) = 0;
 
     /**
      Enables or disables animations
     */
     void setShowAnimations(KHTMLSettings::KAnimationAdvice);
 };
 
 }
 
 #endif