1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.nativewindow.swt;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import org.eclipse.swt.graphics.GCData;
import org.eclipse.swt.widgets.Control;
import javax.media.nativewindow.NativeWindowException;
import com.jogamp.common.util.ReflectionUtil;
public class SWTMisc {
static final Method swt_control_internal_new_GC;
static final Method swt_control_internal_dispose_GC;
static final boolean swt_uses_long_handles;
static final Field swt_control_handle;
static final String str_internal_new_GC = "internal_new_GC";
static final String str_internal_dispose_GC = "internal_dispose_GC";
static final String str_handle = "handle";
static {
Method m=null;
try {
m = ReflectionUtil.getMethod(Control.class, str_internal_new_GC, new Class[] { GCData.class });
} catch (Exception ex) {
throw new NativeWindowException(ex);
}
swt_control_internal_new_GC = m;
boolean swt_uses_long_tmp = false;
try {
m = Control.class.getDeclaredMethod(str_internal_dispose_GC, new Class[] { int.class, GCData.class });
swt_uses_long_tmp = false;
} catch (NoSuchMethodException ex1) {
try {
m = Control.class.getDeclaredMethod(str_internal_dispose_GC, new Class[] { long.class, GCData.class });
swt_uses_long_tmp = true;
} catch (NoSuchMethodException ex2) {
throw new NativeWindowException("Neither 'int' nor 'long' variant of '"+str_internal_dispose_GC+"' exist", ex2);
}
}
swt_uses_long_handles = swt_uses_long_tmp;
swt_control_internal_dispose_GC = m;
Field f = null;
try {
f = Control.class.getField(str_handle);
} catch (Exception ex) {
throw new NativeWindowException(ex);
}
swt_control_handle = f;
}
public static boolean isUsingLongHandles() {
return swt_uses_long_handles;
}
public static long getHandle(Control swtControl) {
long h = 0;
try {
h = swt_control_handle.getLong(swtControl);
} catch (Exception ex) {
throw new NativeWindowException(ex);
}
return h;
}
public static long newGC(Control swtControl, GCData gcData) {
Object o = ReflectionUtil.callMethod(swtControl, swt_control_internal_new_GC, new Object[] { gcData });
if(o instanceof Number) {
return ((Number)o).longValue();
} else {
throw new InternalError("SWT internal_new_GC did not return int or long but "+o.getClass());
}
}
public static void disposeGC(Control swtControl, long gc, GCData gcData) {
if(swt_uses_long_handles) {
ReflectionUtil.callMethod(swtControl, swt_control_internal_dispose_GC, new Object[] { new Long(gc), gcData });
} else {
ReflectionUtil.callMethod(swtControl, swt_control_internal_dispose_GC, new Object[] { new Integer((int)gc), gcData });
}
}
}
|
