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Viewing changes to src/org/herac/tuxguitar/gui/editors/tab/CacheImage.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2008-06-19 00:30:30 UTC
  • mto: (5.1.2 sid)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20080619003030-h719szrhsngou7c6
Tags: upstream-1.0
Import upstream version 1.0

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src/org/herac/tuxguitar/gui/editors/tab/CacheImage.java
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package org.herac.tuxguitar.gui.editors.tab;
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import org.eclipse.swt.graphics.Device;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.graphics.Image;
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import org.eclipse.swt.graphics.Rectangle;
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public class CacheImage {
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        private Device device;
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        private Image cache;
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        private GC gc;
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        private int width;
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        private int height;
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        public CacheImage(Device device){
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                this(device,1,1);
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        }
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        public CacheImage(Device device,int width,int height){
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                this.device = device;
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                this.resizeCache(width,height);
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        }
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        private void resizeCache(int newWidth,int newHeight){
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                //solo si la medida es distinta
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                if(this.width != newWidth || this.height != newHeight){
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                        this.dispose();
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                        this.cache = new Image(this.device,newWidth,newHeight);                 
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                }
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                //si el area es igual al viejo solo limpio la imagen.
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                else{
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                        if(this.cache == null || this.cache.isDisposed()){
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                                this.cache = new Image(this.device,newWidth,newHeight); 
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                        }
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                        getGC().fillRectangle(new Rectangle(0,0,newWidth,newHeight));
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                }
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                this.width = newWidth;
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                this.height = newHeight;
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        }
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        public void setSize(int width,int height){
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                this.resizeCache(width,height);
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        }
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        public GC getGC(){
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                if(this.gc == null || this.gc.isDisposed()){
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                        this.gc = new GC(this.cache);
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                }
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                return gc;
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        }       
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        public void paintImage(GC gc,int x,int y){
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                gc.drawImage(this.cache,x,y);
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        }
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        public Image getImage(){
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                return this.cache;
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        }
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        public void dispose(){
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                if(cache != null && !cache.isDisposed()){
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                        cache.dispose();
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                }               
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                if(gc != null && !gc.isDisposed()){
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                        gc.dispose();
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                }
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        }
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        public boolean isDisposed(){
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                return (cache == null || cache.isDisposed());
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        }
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}