| /* |
| * Copyright 1999-2004 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package sun.awt.motif; |
| |
| import java.awt.*; |
| import sun.awt.GlobalCursorManager; |
| import sun.awt.GlobalCursorManager.*; |
| |
| public final class MGlobalCursorManager extends GlobalCursorManager { |
| |
| static { |
| cacheInit(); |
| } |
| |
| private native static void cacheInit(); |
| |
| // cached nativeContainer |
| private Component nativeContainer; |
| |
| |
| /** |
| * The MGlobalCursorManager is a singleton. |
| */ |
| private static MGlobalCursorManager manager; |
| |
| |
| static GlobalCursorManager getCursorManager() { |
| if (manager == null) { |
| manager = new MGlobalCursorManager(); |
| } |
| return manager; |
| } |
| |
| /** |
| * Should be called in response to a native mouse enter or native mouse |
| * button released message. Should not be called during a mouse drag. |
| */ |
| static void nativeUpdateCursor(Component heavy) { |
| MGlobalCursorManager.getCursorManager().updateCursorLater(heavy); |
| } |
| |
| |
| protected void setCursor(Component comp, Cursor cursor, boolean useCache) { |
| if (comp == null) { |
| return; |
| } |
| |
| Cursor cur = useCache ? cursor : getCapableCursor(comp); |
| |
| Component nc = useCache ? nativeContainer : getNativeContainer(comp); |
| |
| // System.out.println(" set cursor="+cursor+" on "+comp+" new curs="+cur); |
| if (nc != null && nc.isDisplayable()) { |
| nativeContainer = nc; |
| ((MComponentPeer)nc.getPeer()).pSetCursor(cur); |
| } |
| } |
| |
| private Component getNativeContainer(Component comp) { |
| while (comp != null && comp.isLightweight()) { |
| comp = comp.getParent(); |
| } |
| return comp; |
| } |
| |
| protected native void getCursorPos(Point p); |
| protected native Component findHeavyweightUnderCursor(); |
| |
| /* |
| * two native methods to call corresponding methods in Container and |
| * Component |
| */ |
| protected native Component findComponentAt(Container con, int x, int y); |
| protected native Point getLocationOnScreen(Component com); |
| |
| protected Component findHeavyweightUnderCursor(boolean useCache) { |
| return findHeavyweightUnderCursor(); |
| } |
| |
| private Cursor getCapableCursor(Component comp) { |
| Component c = comp; |
| while ((c != null) && !(c instanceof Window) && |
| c.isEnabled() && c.isVisible() && c.isDisplayable()) { |
| c = c.getParent(); |
| } |
| if (c instanceof Window) { |
| return (c.isEnabled() && c.isVisible() && c.isDisplayable() && comp.isEnabled()) ? |
| comp.getCursor() : |
| Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR); |
| } else if (c == null) { |
| return null; |
| } |
| return getCapableCursor(c.getParent()); |
| } |
| } |