swt绘图练习

<pre name="code" class="java">public static void main(String[] args) {final Display display = Display.getDefault();final Shell shell = new Shell(display);shell.setSize(200, 200);shell.addPaintListener(new PaintListener() {public void paintControl(PaintEvent e) {GC gc = e.gc;Rectangle clientArea = shell.getClientArea();int width = clientArea.width;int height = clientArea.height;//gc.setClipping(20, 20, width-40, height-40);//剪切//gc.setBackground(display.getSystemColor(SWT.COLOR_CYAN));//设置背景色//gc.fillPolygon(new int[]{10,10,width,0,width/2,height});//填充多边形//gc.drawRectangle(10, 10, width-20, height-20);//绘制长方形//gc.drawRoundRectangle(5,5,90,45,25,15);//绘制圆角长方形//gc.drawOval(0, 0, width, height);//绘制圆形//gc.setLineStyle(SWT.LINE_DASHDOTDOT);//设置线的风格//gc.setLineWidth(3);//设置线的宽度//gc.drawArc(0, 0, width, height, 90, 200);//设置圆弧线//gc.drawText("hello", 5, 5);//绘制文本，识别制表符和换行符//Font font = new Font(display, "Arial", 20, 20);//gc.setFont(font);//设置字体//gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE));//设置前景色//gc.drawText("hello\tthere\nwide\tworld", 5, 25);//绘制文本，识别制表符和换行符//gc.drawString("hello\tthere\nwide\tworld", 5, 25);//绘制文本，不识别制表符和换行符//font.dispose();//图形填充//gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE)); //gc.fillPolygon(new int[] { 25,5,45,45,5,45 });//填充三角形//gc.fillRectangle(5,5,90,45);//填充矩形//gc.fillRoundRectangle(5,5,90,45,25,15);//填充圆角长方形//gc.fillOval(0, 0, width, height);//填充圆形//gc.fillArc(0, 0, width, height, 90, 200);//填充圆弧线//gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE)); //gc.setForeground(display.getSystemColor(SWT.COLOR_CYAN)); //gc.fillGradientRectangle(5,5,90,45,true);//渐变色填充矩形//XOR异或处理//gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE)); //gc.fillRectangle(5,5,90,45); //gc.setXORMode(true); //gc.setBackground(display.getSystemColor(SWT.COLOR_WHITE)); //gc.fillRectangle(20,20,50,50); //gc.setBackground(display.getSystemColor(SWT.COLOR_RED)); //gc.fillOval(80,20,50,50);Image image = new Image(display, "c:/xiaomi.PNG");Rectangle bounds = image.getBounds();gc.drawImage(image, bounds.x, bounds.y);//绘制图片}});shell.open();while(!shell.isDisposed()){if(!display.readAndDispatch()){display.sleep();}}display.dispose();}