svgimagecanvas.java

j2me手机应用开发环境下的svg动画程序

/*
 *
 * Copyright © 2007 Sun Microsystems, Inc. All rights reserved.
 * Use is subject to license terms.
 */
package com.sun.perseus.demo;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
import javax.microedition.m2g.SVGImage;
import javax.microedition.m2g.ScalableGraphics;


class SVGImageCanvas extends Canvas {
    /**
     * The SVGImage painted by the canvas.
     */
    protected SVGImage svgImage;

    /**
     * The ScalableGraphics used to paint into the midp
     * Graphics instance.
     */
    protected ScalableGraphics sg = ScalableGraphics.createInstance();

    /**
     * @param svgImage the SVGImage this canvas should paint.
     */
    protected SVGImageCanvas(final SVGImage svgImage) {
        this.svgImage = svgImage;
    }

    public void paint(Graphics g) {
        g.setColor(255, 255, 255);
        g.fillRect(0, 0, getWidth(), getHeight());
        sg.bindTarget(g);
        svgImage.setViewportWidth(getWidth());
        svgImage.setViewportHeight(getHeight());
        sg.render(0, 0, svgImage);
        sg.releaseTarget();
    }
}