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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).
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25 
26 package sun.awt.X11;
27 
28 import sun.awt.X11CustomCursor;
29 import 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 public class XCustomCursor extends X11CustomCursor {
39 
XCustomCursor(Image cursor, Point hotSpot, String name)40     public XCustomCursor(Image cursor, Point hotSpot, String name)
41       throws IndexOutOfBoundsException {
42         super(cursor, hotSpot, name);
43     }
44 
45     /**
46      * Returns the supported cursor size
47      */
getBestCursorSize(int preferredWidth, int preferredHeight)48     static Dimension getBestCursorSize(int preferredWidth, int preferredHeight) {
49 
50         // Fix for bug 4212593 The Toolkit.createCustomCursor does not
51         //                     check absence of the image of cursor
52         // We use XQueryBestCursor which accepts unsigned ints to obtain
53         // the largest cursor size that could be dislpayed
54         //Dimension d = new Dimension(Math.abs(preferredWidth), Math.abs(preferredHeight));
55         Dimension d;
56 
57         XToolkit.awtLock();
58         try {
59             long display = XToolkit.getDisplay();
60             long root_window = XlibWrapper.RootWindow(display,
61                     XlibWrapper.DefaultScreen(display));
62 
63             XlibWrapper.XQueryBestCursor(display,root_window, Math.abs(preferredWidth),Math.abs(preferredHeight),XlibWrapper.larg1,XlibWrapper.larg2);
64             d = new Dimension(XlibWrapper.unsafe.getInt(XlibWrapper.larg1),XlibWrapper.unsafe.getInt(XlibWrapper.larg2));
65         }
66         finally {
67             XToolkit.awtUnlock();
68         }
69         return d;
70     }
71 
createCursor(byte[] xorMask, byte[] andMask, int width, int height, int fcolor, int bcolor, int xHotSpot, int yHotSpot)72     protected void createCursor(byte[] xorMask, byte[] andMask,
73                                 int width, int height,
74                                 int fcolor, int bcolor,
75                                 int xHotSpot, int yHotSpot)
76     {
77         XToolkit.awtLock();
78         try {
79             long display = XToolkit.getDisplay();
80             long root_window = XlibWrapper.RootWindow(display,
81                     XlibWrapper.DefaultScreen(display));
82 
83             long colormap = XToolkit.getDefaultXColormap();
84             XColor fore_color = new XColor();
85 
86             fore_color.set_flags((byte) (XConstants.DoRed | XConstants.DoGreen | XConstants.DoBlue));
87             fore_color.set_red((short)(((fcolor >> 16) & 0x000000ff) << 8));
88             fore_color.set_green((short) (((fcolor >> 8) & 0x000000ff) << 8));
89             fore_color.set_blue((short)(((fcolor >> 0) & 0x000000ff) << 8));
90 
91             XlibWrapper.XAllocColor(display,colormap,fore_color.pData);
92 
93 
94             XColor back_color = new XColor();
95             back_color.set_flags((byte) (XConstants.DoRed | XConstants.DoGreen | XConstants.DoBlue));
96 
97             back_color.set_red((short) (((bcolor >> 16) & 0x000000ff) << 8));
98             back_color.set_green((short) (((bcolor >> 8) & 0x000000ff) << 8));
99             back_color.set_blue((short) (((bcolor >> 0) & 0x000000ff) << 8));
100 
101             XlibWrapper.XAllocColor(display,colormap,back_color.pData);
102 
103 
104             long nativeXorMask = Native.toData(xorMask);
105             long source = XlibWrapper.XCreateBitmapFromData(display,root_window,nativeXorMask,width,height);
106 
107             long nativeAndMask = Native.toData(andMask);
108             long mask =  XlibWrapper.XCreateBitmapFromData(display,root_window,nativeAndMask,width,height);
109 
110             long cursor = XlibWrapper.XCreatePixmapCursor(display,source,mask,fore_color.pData,back_color.pData,xHotSpot,yHotSpot);
111 
112             XlibWrapper.unsafe.freeMemory(nativeXorMask);
113             XlibWrapper.unsafe.freeMemory(nativeAndMask);
114             XlibWrapper.XFreePixmap(display,source);
115             XlibWrapper.XFreePixmap(display,mask);
116             back_color.dispose();
117             fore_color.dispose();
118 
119             XGlobalCursorManager.setPData(this,cursor);
120         }
121         finally {
122             XToolkit.awtUnlock();
123         }
124 
125     }
126 }
127