private static void drawSelection(JTree tree, Graphics g, final int width) {
   int y = 0;
   final int[] rows = tree.getSelectionRows();
   final int height = tree.getRowHeight();
   for (int row : rows) {
     final TreeCellRenderer renderer = tree.getCellRenderer();
     final Object value = tree.getPathForRow(row).getLastPathComponent();
     if (value == null) continue;
     final Component component =
         renderer.getTreeCellRendererComponent(tree, value, false, false, false, row, false);
     if (component.getFont() == null) {
       component.setFont(tree.getFont());
     }
     g.translate(0, y);
     component.setBounds(0, 0, width, height);
     boolean wasOpaque = false;
     if (component instanceof JComponent) {
       final JComponent j = (JComponent) component;
       if (j.isOpaque()) wasOpaque = true;
       j.setOpaque(false);
     }
     component.paint(g);
     if (wasOpaque) {
       ((JComponent) component).setOpaque(true);
     }
     y += height;
     g.translate(0, -y);
   }
 }
예제 #2
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 // {{{ parseHighlightStyle()
 SyntaxStyle parseHighlightStyle(String style) {
   Font f = (resultTree != null) ? resultTree.getFont() : UIManager.getFont("Tree.font");
   SyntaxStyle s;
   try {
     s = SyntaxUtilities.parseStyle(style, f.getFamily(), f.getSize(), true, null);
   } catch (Exception e) {
     style = "color:#000000";
     s = SyntaxUtilities.parseStyle(style, f.getFamily(), f.getSize(), true);
   }
   return s;
 } // }}}
    public static Image createImage(final JTree tree) {
      final TreeSelectionModel model = tree.getSelectionModel();
      final TreePath[] paths = model.getSelectionPaths();

      int count = 0;
      final List<ChangesBrowserNode> nodes = new ArrayList<ChangesBrowserNode>();
      for (final TreePath path : paths) {
        final ChangesBrowserNode node = (ChangesBrowserNode) path.getLastPathComponent();
        if (!node.isLeaf()) {
          nodes.add(node);
          count += node.getCount();
        }
      }

      for (TreePath path : paths) {
        final ChangesBrowserNode element = (ChangesBrowserNode) path.getLastPathComponent();
        boolean child = false;
        for (final ChangesBrowserNode node : nodes) {
          if (node.isNodeChild(element)) {
            child = true;
            break;
          }
        }

        if (!child) {
          if (element.isLeaf()) count++;
        } else if (!element.isLeaf()) {
          count -= element.getCount();
        }
      }

      final JLabel label = new JLabel(VcsBundle.message("changes.view.dnd.label", count));
      label.setOpaque(true);
      label.setForeground(tree.getForeground());
      label.setBackground(tree.getBackground());
      label.setFont(tree.getFont());
      label.setSize(label.getPreferredSize());
      final BufferedImage image =
          new BufferedImage(label.getWidth(), label.getHeight(), BufferedImage.TYPE_INT_ARGB);

      Graphics2D g2 = (Graphics2D) image.getGraphics();
      g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.7f));
      label.paint(g2);
      g2.dispose();

      return image;
    }