1/*
2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package sun.awt.X11;
27
28import sun.awt.X11CustomCursor;
29import java.awt.*;
30
31/**
32 * A class to encapsulate a custom image-based cursor.
33 *
34 * @see Component#setCursor
35 * @author      Thomas Ball
36 * @author      Bino George
37 */
38@SuppressWarnings("serial") // JDK-implementation class
39public class XCustomCursor extends X11CustomCursor {
40
41    public XCustomCursor(Image cursor, Point hotSpot, String name)
42      throws IndexOutOfBoundsException {
43        super(cursor, hotSpot, name);
44    }
45
46    /**
47     * Returns the supported cursor size
48     */
49    static Dimension getBestCursorSize(int preferredWidth, int preferredHeight) {
50
51        // Fix for bug 4212593 The Toolkit.createCustomCursor does not
52        //                     check absence of the image of cursor
53        // We use XQueryBestCursor which accepts unsigned ints to obtain
54        // the largest cursor size that could be dislpayed
55        //Dimension d = new Dimension(Math.abs(preferredWidth), Math.abs(preferredHeight));
56        Dimension d;
57
58        XToolkit.awtLock();
59        try {
60            long display = XToolkit.getDisplay();
61            long root_window = XlibWrapper.RootWindow(display,
62                    XlibWrapper.DefaultScreen(display));
63
64            XlibWrapper.XQueryBestCursor(display,root_window, Math.abs(preferredWidth),Math.abs(preferredHeight),XlibWrapper.larg1,XlibWrapper.larg2);
65            d = new Dimension(XlibWrapper.unsafe.getInt(XlibWrapper.larg1),XlibWrapper.unsafe.getInt(XlibWrapper.larg2));
66        }
67        finally {
68            XToolkit.awtUnlock();
69        }
70        return d;
71    }
72
73    protected void createCursor(byte[] xorMask, byte[] andMask,
74                                int width, int height,
75                                int fcolor, int bcolor,
76                                int xHotSpot, int yHotSpot)
77    {
78        XToolkit.awtLock();
79        try {
80            long display = XToolkit.getDisplay();
81            long root_window = XlibWrapper.RootWindow(display,
82                    XlibWrapper.DefaultScreen(display));
83
84            long colormap = XToolkit.getDefaultXColormap();
85            XColor fore_color = new XColor();
86
87            fore_color.set_flags((byte) (XConstants.DoRed | XConstants.DoGreen | XConstants.DoBlue));
88            fore_color.set_red((short)(((fcolor >> 16) & 0x000000ff) << 8));
89            fore_color.set_green((short) (((fcolor >> 8) & 0x000000ff) << 8));
90            fore_color.set_blue((short)(((fcolor >> 0) & 0x000000ff) << 8));
91
92            XlibWrapper.XAllocColor(display,colormap,fore_color.pData);
93
94
95            XColor back_color = new XColor();
96            back_color.set_flags((byte) (XConstants.DoRed | XConstants.DoGreen | XConstants.DoBlue));
97
98            back_color.set_red((short) (((bcolor >> 16) & 0x000000ff) << 8));
99            back_color.set_green((short) (((bcolor >> 8) & 0x000000ff) << 8));
100            back_color.set_blue((short) (((bcolor >> 0) & 0x000000ff) << 8));
101
102            XlibWrapper.XAllocColor(display,colormap,back_color.pData);
103
104
105            long nativeXorMask = Native.toData(xorMask);
106            long source = XlibWrapper.XCreateBitmapFromData(display,root_window,nativeXorMask,width,height);
107
108            long nativeAndMask = Native.toData(andMask);
109            long mask =  XlibWrapper.XCreateBitmapFromData(display,root_window,nativeAndMask,width,height);
110
111            long cursor = XlibWrapper.XCreatePixmapCursor(display,source,mask,fore_color.pData,back_color.pData,xHotSpot,yHotSpot);
112
113            XlibWrapper.unsafe.freeMemory(nativeXorMask);
114            XlibWrapper.unsafe.freeMemory(nativeAndMask);
115            XlibWrapper.XFreePixmap(display,source);
116            XlibWrapper.XFreePixmap(display,mask);
117            back_color.dispose();
118            fore_color.dispose();
119
120            XGlobalCursorManager.setPData(this,cursor);
121        }
122        finally {
123            XToolkit.awtUnlock();
124        }
125
126    }
127}
128