snippet10.java

对于可视的桌面开发系统的一些详细的设计资料

package org.eclipse.swt.snippets;


import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet10 {
	public static void main(String[] args) {
		final Display display = new Display();
		final Shell shell = new Shell(display);
		//设置shell窗口标题
		shell.setText("高级图形技术");
		
		//获得系统字体数据
		FontData fd = shell.getFont().getFontData()[0];
		//建立字体对象
		final Font font = new Font(display, fd.getName(), 20, SWT.BOLD | SWT.ITALIC);
		final Image image = new Image(display, 640, 480);
		final Rectangle rect = image.getBounds();
		GC gc = new GC(image);
		gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
		gc.fillOval(rect.x, rect.y, rect.width, rect.height);
		gc.dispose();
		shell.addListener(SWT.Paint, new Listener() {
			public void handleEvent(Event event) {
				GC gc = event.gc;				
				Transform tr = new Transform(display);
				tr.translate(10, 120);
				tr.rotate(-30);
				gc.drawImage(image, 0, 0, rect.width, rect.height, 0, 0, rect.width / 2, rect.height / 2);
				gc.setAlpha(100);
				gc.setTransform(tr);
				Path path = new Path(display);
				path.addString("Eclipse SWT/JFace", 0, 0, font);
				gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
				gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE));
				gc.fillPath(path);
				gc.drawPath(path);
				tr.dispose();
				path.dispose();
			}			
		});
		shell.setSize(shell.computeSize(rect.width/2 , rect.height/2 ));
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
		image.dispose();
		font.dispose();
		display.dispose();
	}
}