如何在Java中制作圆形图像标签？

Question

如何在Java中制作圆形图像标签？

这样做。.嘿，伙计们。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

我想制作圆形图像标签，但我不能

请帮我...

Answer 1

我认为您应该更改钉子，而不是尝试修改组件的输出，而是修改输入...

这一切都这样做，是将圆形（基于alpha的）掩码应用于另一个图像

    BufferedImage master = ImageIO.read(new File("/Volumes/Disk02/Dropbox/MegaTokyo/thumnails/megatokyo_omnibus_1_3_cover_by_fredrin-d4oupef.jpg"));

    int diameter = Math.min(master.getWidth(), master.getHeight());
    BufferedImage mask = new BufferedImage(master.getWidth(), master.getHeight(), BufferedImage.TYPE_INT_ARGB);

    Graphics2D g2d = mask.createGraphics();
    applyQualityRenderingHints(g2d);
    g2d.fillOval(0, 0, diameter - 1, diameter - 1);
    g2d.dispose();

    BufferedImage masked = new BufferedImage(diameter, diameter, BufferedImage.TYPE_INT_ARGB);
    g2d = masked.createGraphics();
    applyQualityRenderingHints(g2d);
    int x = (diameter - master.getWidth()) / 2;
    int y = (diameter - master.getHeight()) / 2;
    g2d.drawImage(master, x, y, null);
    g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.DST_IN));
    g2d.drawImage(mask, 0, 0, null);
    g2d.dispose();

    JOptionPane.showMessageDialog(null, new JLabel(new ImageIcon(masked)));

的好处，您可以得到软剪辑（哪个setClip不提供）以及不要与组件的现有剪辑形状混乱

，applyqualityRenderingHints ...

public static void applyQualityRenderingHints(Graphics2D g2d) {

    g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
    g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
    g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);

}

Answer 2

转到博客niceApplication1.blogspot.com，然后下载新的NICE应用程序1 Home Somendous，然后在提取后转到Dist文件夹并打开Java Jar nice Application 1，然后拿Jar nice_application_1_files，然后仅在某些中转换您的方法节省空间的行。

在JAR仅在您的文件位置添加以下方法和调用方法之后。

导入nice_application_1.icon;

private void addicon（）抛出java.lang.nullpointerexception，ioexception {

    Icon test = new Icon("C:\\Image.jpg");

    String nice = test.icon();

    BufferedImage Appli1 = test.Application1;

    jToggleButton0.setIcon(new ImageIcon(Appli1));

}

//圆形形状图标，您可以与上述方法一起使用。

上面的示例，使用jbutton如果需要在弹出窗口中，请键入Joptionpane.showmessageDialog（null，new Jlabel（new Imageicon（Appli1）））;

下载罐子后，您还可以获得更多优势。

Answer 3

您可以使用区域类创建剪辑区域：

BufferedImage image = ImageIO.read(new File("..."));
Area clip = new Area( new Rectangle(0, 0, image.getWidth(), image.getHeight()) );
Area oval = new Area( new Ellipse2D.Double(0, 0, image.getWidth() - 1, image.getHeight() - 1) );
clip.subtract( oval );
Graphics g2d = image.createGraphics();
g2d.setClip( clip );
g2d.setColor( Color.BLACK );
g2d.fillRect(0, 0, image.getWidth(), image.getHeight());
JOptionPane.showMessageDialog(null, new JLabel(new ImageIcon(image)));