SWT小技巧

1. Composite背景渐变:

   composite_main.addPaintListener(new PaintListener(){
   			@Override
   			public void paintControl(PaintEvent arg0) {
   				Rectangle rectangle = composite_main.getClientArea();
   				image = image == null ? new Image(display,1,Math.max(1, rectangle.height)): image;
   				GC gc_main = new GC(image);
   				gc_main.setBackground(SWTResourceManager.getColor(199, 215, 238));
   				gc_main.setForeground(SWTResourceManager.getColor(213, 231, 245));
   				gc_main.fillGradientRectangle(composite_main.getClientArea().x, composite_main.getClientArea().y, composite_main.getClientArea().width,composite_main.getClientArea().height,true);
   				gc_main.dispose();
   				composite_main.setBackgroundImage(image);//
   			}
   		});

    
2. Composite上控件背景颜色透明:

   composite_main.setBackgroundMode(SWT.INHERIT_FORCE);

    
3. Composite画圆角矩形:

   container.addPaintListener(new PaintListener(){
   			@Override
   			public void paintControl(PaintEvent arg0) {
   				
   				GC gc_container_1 = new GC(container);
   				Color color_1 = new Color(Display.getDefault(),141,177,227);
   				gc_container_1.setForeground(color_1);
   				gc_container_1.setLineWidth(1);
   				gc_container_1.drawRoundRectangle(2,2,x-20,isButtonBar == true?y-89:y-75,7,7);
   				gc_container_1.dispose();
   }
   });

    
4. CLable背景颜色渐变:

label.setBackground(new Color[]{SWTResourceManager.getColor(207, 225, 245),SWTResourceManager.getColor(202, 225, 245)},new int[] {100}, true);

5.   Composite背景渐变(随窗口大小而变)

infoComposite.addPaintListener(new PaintListener() {
			private Image image_info_bg;
			@Override
			public void paintControl(PaintEvent arg0) {
				Point point = infoComposite.getSize();
				if(image_info_bg == null || image_info_bg.getBounds().height != point.y){
					if(image_info_bg!=null&&!image_info_bg.isDisposed())
						image_info_bg.dispose();
					image_info_bg = new Image(infoComposite.getDisplay(),1,point.y);
				}
				GC gc_main = new GC(image_info_bg);
				gc_main.setForeground(SWTResourceManager.getColor(120, 157, 210));
				gc_main.setBackground(SWTResourceManager.getColor(66, 108, 180));
				gc_main.fillGradientRectangle(infoComposite.getClientArea().x, infoComposite.getClientArea().y, infoComposite.getClientArea().width,infoComposite.getClientArea().height,true);
				gc_main.dispose();
				infoComposite.setBackgroundImage(image_info_bg);
			}
		
		});

 

 

评论

1 楼 naughty610 2010-02-17