コード例 #1
0
    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;
    }
コード例 #2
0
  @Override
  public final Component getTreeCellRendererComponent(
      JTree tree,
      Object value,
      boolean selected,
      boolean expanded,
      boolean leaf,
      int row,
      boolean hasFocus) {
    myTree = tree;

    clear();

    mySelected = selected;
    myFocusedCalculated = false;

    // We paint background if and only if tree path is selected and tree has focus.
    // If path is selected and tree is not focused then we just paint focused border.
    if (UIUtil.isFullRowSelectionLAF()) {
      setBackground(selected ? UIUtil.getTreeSelectionBackground() : null);
    } else if (WideSelectionTreeUI.isWideSelection(tree)) {
      setPaintFocusBorder(false);
      if (selected) {
        setBackground(
            hasFocus
                ? UIUtil.getTreeSelectionBackground()
                : UIUtil.getTreeUnfocusedSelectionBackground());
      }
    } else if (selected) {
      setPaintFocusBorder(true);
      if (isFocused()) {
        setBackground(UIUtil.getTreeSelectionBackground());
      } else {
        setBackground(null);
      }
    } else {
      setBackground(null);
    }

    if (value instanceof LoadingNode) {
      setForeground(JBColor.GRAY);
      setIcon(LOADING_NODE_ICON);
    } else {
      setForeground(tree.getForeground());
      setIcon(null);
    }

    if (UIUtil.isUnderGTKLookAndFeel()) {
      super.setOpaque(false); // avoid nasty background
      super.setIconOpaque(false);
    } else if (UIUtil.isUnderNimbusLookAndFeel() && selected && hasFocus) {
      super.setOpaque(false); // avoid erasing Nimbus focus frame
      super.setIconOpaque(false);
    } else if (WideSelectionTreeUI.isWideSelection(tree)) {
      super.setOpaque(false); // avoid erasing Nimbus focus frame
      super.setIconOpaque(false);
    } else {
      super.setOpaque(
          myOpaque
              || selected && hasFocus
              || selected && isFocused()); // draw selection background even for non-opaque tree
    }

    if (tree.getUI() instanceof WideSelectionTreeUI && UIUtil.isUnderAquaBasedLookAndFeel()) {
      setMyBorder(null);
      setIpad(new Insets(0, 2, 0, 2));
    }

    customizeCellRenderer(tree, value, selected, expanded, leaf, row, hasFocus);

    return this;
  }