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  • 图片特效

    水印:

    public void paint(Graphics g) {
    // TODO 自动生成的方法存根
    Graphics2D g2=(Graphics2D)g;
    URL url=paint.class.getResource("qq.jpg");
    Image img=Toolkit.getDefaultToolkit().getImage(url);
    g2.drawImage(img, 0, 0, 400, 400, this);
    int x=100;
    int y=100;
    String str=new String("mafeng");

    Font font =new Font("华文行楷",Font.BOLD,72);
    g2.setFont(font);
    AlphaComposite al=AlphaComposite.SrcOver.derive(0.3f);
    g2.setComposite(al);
    g2.setColor(color);
    g2.drawString(str, x, y);
    System.out.println("456");

    }

    纹理填充特效:

    public void paint(Graphics g) {
    // TODO 自动生成的方法存根

    BufferedImage bi=new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2=bi.createGraphics();
    g2.setColor(Color.blue);
    g2.fillOval(0, 0, 90, 90);

    g2.setColor(Color.yellow);
    g2.fillRect(70, 70, 80, 80);
    Rectangle2D rect=new Rectangle2D.Float(10,10,20,20);
    TexturePaint te=new TexturePaint(bi, rect);
    Graphics2D gb2=(Graphics2D)g;
    gb2.setPaint(te);
    gb2.fillRect(0, 0, 400, 400);

    }

    图片半透明特效:

    和水印原理是一样的

    AlphaComposite al=AlphaComposite.SrcOver.derive(0.3f);
    g2.setComposite(al);

    以椭圆形显示图象:

    public void paint(Graphics g) {
    // TODO 自动生成的方法存根

    Graphics2D g2=(Graphics2D)g;
    URL url=paint.class.getResource("qq.jpg");
    Image img=Toolkit.getDefaultToolkit().getImage(url);
    g2.drawImage(img, 0, 0, 400, 400, this);
    Rectangle2D.Float rect=new Rectangle2D.Float(0, 0, 400, 400);
    Ellipse2D.Float ell=new Ellipse2D.Float(20, 20, 300, 250);
    Area area1=new Area(rect);
    Area area2=new Area(ell);
    area1.subtract(area2);
    g2.fill(area1);

    }

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  • 原文地址:https://www.cnblogs.com/mafeng/p/4461683.html
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