| /* |
| * Copyright 2000-2012 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.ide.dnd.aware; |
| |
| import com.intellij.ide.dnd.DnDAware; |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.openapi.util.SystemInfo; |
| import com.intellij.ui.treeStructure.Tree; |
| import com.intellij.util.ui.JBSwingUtilities; |
| import com.intellij.util.ui.UIUtil; |
| import com.intellij.util.ui.tree.TreeUtil; |
| import com.intellij.util.ui.tree.WideSelectionTreeUI; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| import javax.swing.plaf.TreeUI; |
| import javax.swing.tree.TreeModel; |
| import javax.swing.tree.TreeNode; |
| import javax.swing.tree.TreePath; |
| import java.awt.*; |
| import java.awt.event.MouseEvent; |
| import java.awt.image.BufferedImage; |
| |
| public class DnDAwareTree extends Tree implements DnDAware { |
| public DnDAwareTree() { |
| } |
| |
| public DnDAwareTree(final TreeModel treemodel) { |
| super(treemodel); |
| } |
| |
| public DnDAwareTree(final TreeNode root) { |
| super(root); |
| } |
| |
| @Override |
| public void processMouseEvent(final MouseEvent e) { |
| //todo [kirillk] to delegate this to DnDEnabler |
| if (getToolTipText() == null && e.getID() == MouseEvent.MOUSE_ENTERED) return; |
| super.processMouseEvent(e); |
| } |
| |
| @Override |
| protected void processMouseMotionEvent(MouseEvent e) { |
| if (SystemInfo.isMac && JBSwingUtilities.isRightMouseButton(e) && e.getID() == MouseEvent.MOUSE_DRAGGED) return; |
| super.processMouseMotionEvent(e); |
| } |
| |
| @Override |
| public final boolean isOverSelection(final Point point) { |
| final TreeUI ui = getUI(); |
| final TreePath path = ui instanceof WideSelectionTreeUI && ((WideSelectionTreeUI)ui).isWideSelection() |
| ? getClosestPathForLocation(point.x, point.y) : getPathForLocation(point.x, point.y); |
| if (path == null) return false; |
| return isPathSelected(path); |
| } |
| |
| @Override |
| public void dropSelectionButUnderPoint(final Point point) { |
| TreeUtil.dropSelectionButUnderPoint(this, point); |
| } |
| |
| @Override |
| @NotNull |
| public final JComponent getComponent() { |
| return this; |
| } |
| |
| public static Pair<Image, Point> getDragImage(Tree dndAwareTree, @NotNull TreePath path, Point dragOrigin) { |
| int row = dndAwareTree.getRowForPath(path); |
| Component comp = dndAwareTree.getCellRenderer().getTreeCellRendererComponent(dndAwareTree, path.getLastPathComponent(), false, true, true, row, false); |
| return createDragImage(dndAwareTree, comp, dragOrigin, true); |
| } |
| |
| public static Pair<Image, Point> getDragImage(Tree dndAwareTree, final String text, Point dragOrigin) { |
| return createDragImage(dndAwareTree, new JLabel(text), dragOrigin, false); |
| } |
| |
| private static Pair<Image, Point> createDragImage(final Tree tree, final Component c, Point dragOrigin, boolean adjustToPathUnderDragOrigin) { |
| if (c instanceof JComponent) { |
| ((JComponent)c).setOpaque(true); |
| } |
| |
| c.setForeground(tree.getForeground()); |
| c.setBackground(tree.getBackground()); |
| c.setFont(tree.getFont()); |
| c.setSize(c.getPreferredSize()); |
| final BufferedImage image = UIUtil.createImage(c.getWidth(), c.getHeight(), BufferedImage.TYPE_INT_ARGB); |
| Graphics2D g2 = (Graphics2D)image.getGraphics(); |
| g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.7f)); |
| c.paint(g2); |
| g2.dispose(); |
| |
| Point point = new Point(-image.getWidth(null) / 2, -image.getHeight(null) / 2); |
| |
| if (adjustToPathUnderDragOrigin) { |
| TreePath path = tree.getPathForLocation(dragOrigin.x, dragOrigin.y); |
| if (path != null) { |
| Rectangle bounds = tree.getPathBounds(path); |
| point = new Point(bounds.x - dragOrigin.x, bounds.y - dragOrigin.y); |
| } |
| } |
| |
| return new Pair<Image, Point>(image, point); |
| } |
| |
| |
| } |