javax.swing.JLabel#paint ( )源码实例Demo

下面列出了javax.swing.JLabel#paint ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： openjdk-jdk9 文件： bug6302464.java

private static HashSet getAntialiasedColors(Object aaHint, int lcdContrast) {

        JLabel label = new JLabel("ABCD");
        label.setSize(label.getPreferredSize());
        label.putClientProperty(KEY_TEXT_ANTIALIASING, aaHint);
        label.putClientProperty(KEY_TEXT_LCD_CONTRAST, lcdContrast);

        int w = label.getWidth();
        int h = label.getHeight();

        BufferedImage buffImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = buffImage.createGraphics();
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, w, h);
        label.paint(g);
        g.dispose();

        HashSet<Color> colors = new HashSet<>();

        for (int i = 0; i < w; i++) {
            for (int j = 0; j < h; j++) {
                Color color = new Color(buffImage.getRGB(i, j));
                colors.add(color);
            }
        }

        return colors;
    }

源代码2 项目： visualvm 文件： CategoryList.java

private static Icon centeredIcon(final Icon icon, final int width, final int height) {
    JLabel l = new JLabel(icon);
    l.setIconTextGap(0);
    l.setBorder(null);
    l.setSize(width, height);
    
    BufferedImage img = new BufferedImage(l.getWidth(), l.getHeight(), BufferedImage.TYPE_INT_ARGB);
    l.paint(img.getGraphics());
    
    return new ImageIcon(img);
}

源代码3 项目： nordpos 文件： ThumbNailBuilder.java

public Image getThumbNailText(Image img, String text) {

        img = getThumbNail(img);

        BufferedImage imgtext = new BufferedImage(img.getWidth(null), img.getHeight(null),  BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2d = imgtext.createGraphics();

        // The text
        JLabel label = new JLabel();
        label.setOpaque(false);
        label.setFont(label.getFont().deriveFont((float)m_font_size));
        //label.setText(text);
        label.setText("<html>" + text + "</html>");
        label.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        label.setVerticalAlignment(javax.swing.SwingConstants.TOP);
        Dimension d = label.getPreferredSize();
        //label.setBounds(0, 0, imgtext.getWidth(), d.height);
        label.setBounds(0, 0, imgtext.getWidth(), imgtext.getHeight());

        // The background
        Color c1 = new Color(0xff, 0xff, 0xff, 0x40);
        Color c2 = new Color(0xff, 0xff, 0xff, 0xd0);

//        Point2D center = new Point2D.Float(imgtext.getWidth() / 2, label.getHeight());
//        float radius = imgtext.getWidth() / 3;
//        float[] dist = {0.1f, 1.0f};
//        Color[] colors = {c2, c1};
//        Paint gpaint = new RadialGradientPaint(center, radius, dist, colors);
        Paint gpaint = new GradientPaint(new Point(0,0), c1, new Point(label.getWidth() / 2, 0), c2, true);

        g2d.drawImage(img, 0, 0, null);
        g2d.translate(0, imgtext.getHeight() - label.getHeight());
        g2d.setPaint(gpaint);
        g2d.fillRect(0 , 0, imgtext.getWidth(), label.getHeight());
        label.paint(g2d);

        g2d.dispose();

        return imgtext;
    }

源代码4 项目： netbeans 文件： DefaultOutlineCellRenderer.java

@Override
public void paintBorder(Component c, java.awt.Graphics g, int x, int y, int width, int height) {
    DefaultOutlineCellRenderer ren = (DefaultOutlineCellRenderer)
            ((JComponent) c).getClientProperty(DefaultOutlineCellRenderer.class);
    if (ren == null) {
        ren = (DefaultOutlineCellRenderer) c;
    }
    if (ren.isShowHandle() && !ren.isLeaf()) {
        Icon icon = ren.isExpanded() ? getExpandedIcon() : getCollapsedIcon();
        int iconY;
        int iconX = ren.getNestingDepth() * getNestingWidth();
        if (icon.getIconHeight() < height) {
            iconY = (height / 2) - (icon.getIconHeight() / 2);
        } else {
            iconY = 0;
        }
        if (isNimbus) {
            iconX += icon.getIconWidth()/3; // To look good
        }
        if (isGtk) {
            JLabel lbl = ren.isExpanded () ? lExpandedIcon : lCollapsedIcon;
            lbl.setSize (Math.max (getExpansionHandleWidth (), iconX + getExpansionHandleWidth ()), height);
            lbl.paint (g);
        } else {
            icon.paintIcon(c, g, iconX, iconY);
        }
    }
    JCheckBox chBox = ren.getCheckBox();
    if (chBox != null) {
        int chBoxX = getExpansionHandleWidth() + ren.getNestingDepth() * getNestingWidth();
        Rectangle bounds = chBox.getBounds();
        int chBoxY;
        if (bounds.getHeight() < height) {
            chBoxY = (height / 2) - (((int) bounds.getHeight()) / 2);
        } else {
            if (isNimbus) {
                chBoxY = 1;
            } else {
                chBoxY = 0;
            }
        }
        Dimension chDim = chBox.getSize();
        java.awt.Graphics gch = g.create(chBoxX, chBoxY, chDim.width, chDim.height);
        chBox.paint(gch);
    }
}