| /* |
| * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.apple.laf; |
| |
| import java.awt.*; |
| import java.awt.event.MouseEvent; |
| |
| import javax.swing.*; |
| import javax.swing.plaf.ComponentUI; |
| import javax.swing.plaf.basic.BasicPopupMenuUI; |
| |
| public class AquaPopupMenuUI extends BasicPopupMenuUI { |
| public static ComponentUI createUI(final JComponent x) { |
| return new AquaPopupMenuUI(); |
| } |
| |
| public boolean isPopupTrigger(final MouseEvent e) { |
| // Use the awt popup trigger code since this only runs on our OS! |
| return e.isPopupTrigger(); |
| } |
| |
| @Override |
| public void paint(final Graphics g, final JComponent c) { |
| if (!(g instanceof Graphics2D)) { |
| super.paint(g, c); |
| return; |
| } |
| |
| if (!(PopupFactory.getSharedInstance() instanceof ScreenPopupFactory)) { |
| super.paint(g, c); |
| return; |
| } |
| |
| // round off and put back edges in a new Graphics |
| final Graphics2D g2d = (Graphics2D)g.create(); |
| final Rectangle popupBounds = popupMenu.getBounds(); // NB: origin is still at 0,0 |
| paintRoundRect(g2d, popupBounds); |
| clipEdges(g2d, popupBounds); |
| g2d.dispose(); |
| |
| // if any subsequent drawing occurs over these corners, the window is square again |
| super.paint(g, c); |
| } |
| |
| protected void paintRoundRect(final Graphics2D g2d, final Rectangle popupBounds) { |
| // setup the graphics context to blast alpha for every primitive we draw |
| g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); |
| g2d.setComposite(AlphaComposite.Clear); |
| |
| // draw the 3px round-rect line around the outer bounds of the window, |
| // this gives the appearance of rounded corners |
| g2d.setStroke(new BasicStroke(3.0f)); |
| g2d.drawRoundRect(-2, -2, popupBounds.width + 3, popupBounds.height + 3, 12, 12); |
| } |
| |
| static final int OVERLAP_SLACK = 10; |
| protected void clipEdges(final Graphics2D g2d, final Rectangle popupBounds) { |
| final Component invoker = popupMenu.getInvoker(); |
| if (!(invoker instanceof JMenu)) return; // only point corners originating from menu items |
| |
| final Rectangle invokerBounds = invoker.getBounds(); |
| |
| // only get location on screen when necessary |
| invokerBounds.setLocation(invoker.getLocationOnScreen()); |
| popupBounds.setLocation(popupMenu.getLocationOnScreen()); |
| |
| final Point invokerCenter = new Point((int)invokerBounds.getCenterX(), (int)invokerBounds.getCenterY()); |
| if (popupBounds.contains(invokerCenter)) { |
| // invoker is "behind" the popup, no corners should be pointed |
| return; |
| } |
| |
| // blast opaque background over the corners we want to "put back" |
| g2d.setComposite(AlphaComposite.SrcOver); |
| g2d.setColor(popupMenu.getBackground()); |
| |
| final Point popupCenter = new Point((int)popupBounds.getCenterX(), (int)popupBounds.getCenterY()); |
| final boolean invokerMidpointAbovePopupMidpoint = invokerCenter.y <= popupCenter.y; |
| |
| if (invokerBounds.x + invokerBounds.width < popupBounds.x + OVERLAP_SLACK) { |
| // popup is far right of invoker |
| if (invokerMidpointAbovePopupMidpoint) { |
| // point upper left corner, most common case |
| g2d.fillRect(-2, -2, 8, 8); |
| return; |
| } |
| // point lower left corner |
| g2d.fillRect(-2, popupBounds.height - 6, 8, 8); |
| return; |
| } |
| |
| if (popupBounds.x + popupBounds.width < invokerBounds.x + OVERLAP_SLACK) { |
| // popup is far left of invoker |
| if (invokerMidpointAbovePopupMidpoint) { |
| // point upper right corner |
| g2d.fillRect(popupBounds.width - 6, -2, 8, 8); |
| return; |
| } |
| // point lower right corner |
| g2d.fillRect(popupBounds.width - 6, popupBounds.height - 6, 8, 8); |
| return; |
| } |
| |
| // popup is neither "far right" or "far left" of it's invoker |
| if (invokerBounds.y + invokerBounds.height < popupBounds.y + OVERLAP_SLACK) { |
| // popup is "middle" below it's invoker, |
| // this is probably the "connected" case where both upper corners should touch |
| g2d.fillRect(-2, -2, popupBounds.width + 4, 8); |
| return; |
| } |
| |
| // if none of these cases match...don't make any corners pointed |
| } |
| } |