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);
}
}
@Override
public Font getFont() {
Font font = super.getFont();
// Cell renderers could have no parent and no explicit set font.
// Take tree font in this case.
if (font != null) return font;
JTree tree = getTree();
return tree != null ? tree.getFont() : null;
}
// {{{ 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;
} // }}}
private static int getTreeBaseline(JTree tree, int height) {
int rowHeight = tree.getRowHeight();
if (TREE_LABEL == null) {
TREE_LABEL = new JLabel("X");
TREE_LABEL.setIcon(UIManager.getIcon("Tree.closedIcon"));
}
JLabel label = TREE_LABEL;
label.setFont(tree.getFont());
if (rowHeight <= 0) {
rowHeight = label.getPreferredSize().height;
}
return getLabelBaseline(label, rowHeight) + tree.getInsets().top;
}
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;
}