1 /*
2 * Copyright (c) 1999, 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
26 #include "awt.h"
27 #include <sun_awt_Win32GraphicsConfig.h>
28 #include "awt_Win32GraphicsConfig.h"
29 #include "awt_Canvas.h"
30 #include "awt_Win32GraphicsDevice.h"
31 #include "Devices.h"
32
33 //Info for building a ColorModel
34 #include "java_awt_image_DataBuffer.h"
35
36
37 //Local utility functions
38 static int shiftToMask(int numBits, int shift);
39
40 /*
41 * AwtWin32GraphicsConfig fields
42 */
43
44 jfieldID AwtWin32GraphicsConfig::win32GCVisualID;
45
46 /*
47 * Class: sun_awt_Win32GraphicsConfig
48 * Method: initIDs
49 * Signature: ()V
50 */
51
52 JNIEXPORT void JNICALL
Java_sun_awt_Win32GraphicsConfig_initIDs(JNIEnv * env,jclass thisCls)53 Java_sun_awt_Win32GraphicsConfig_initIDs
54 (JNIEnv *env, jclass thisCls)
55 {
56 TRY;
57 AwtWin32GraphicsConfig::win32GCVisualID = env->GetFieldID(thisCls,
58 "visual", "I");
59 DASSERT(AwtWin32GraphicsConfig::win32GCVisualID);
60 CATCH_BAD_ALLOC;
61 }
62
63 /*
64 * shiftToMask:
65 * This function converts between cXXXBits and cXXXShift
66 * fields in the Windows GDI PIXELFORMATDESCRIPTOR and the mask
67 * fields passed to the DirectColorModel constructor.
68 */
shiftToMask(int numBits,int shift)69 inline int shiftToMask(int numBits, int shift) {
70 int mask = 0xFFFFFFFF;
71
72 //Shift in numBits 0s
73 mask = mask << numBits;
74 mask = ~mask;
75 //shift left by value of shift
76 mask = mask << shift;
77 return mask;
78 }
79
80 /*
81 * Class: sun_awt_Win32GraphicsConfig
82 * Method: getBounds
83 * Signature: ()Ljava/awt/Rectangle
84 */
85 JNIEXPORT jobject JNICALL
Java_sun_awt_Win32GraphicsConfig_getBounds(JNIEnv * env,jobject thisobj,jint screen)86 Java_sun_awt_Win32GraphicsConfig_getBounds(JNIEnv *env, jobject thisobj,
87 jint screen)
88 {
89 jclass clazz;
90 jmethodID mid;
91 jobject bounds = NULL;
92
93 clazz = env->FindClass("java/awt/Rectangle");
94 CHECK_NULL_RETURN(clazz, NULL);
95 mid = env->GetMethodID(clazz, "<init>", "(IIII)V");
96 if (mid != 0) {
97 RECT rRW = {0, 0, 0, 0};
98 if (TRUE == MonitorBounds(AwtWin32GraphicsDevice::GetMonitor(screen), &rRW)) {
99 bounds = env->NewObject(clazz, mid,
100 rRW.left, rRW.top,
101 rRW.right - rRW.left,
102 rRW.bottom - rRW.top);
103 }
104 else {
105 // 4910760 - don't return a null bounds, return the bounds of the
106 // primary screen
107 bounds = env->NewObject(clazz, mid,
108 0, 0,
109 ::GetSystemMetrics(SM_CXSCREEN),
110 ::GetSystemMetrics(SM_CYSCREEN));
111 }
112 if (safe_ExceptionOccurred(env)) {
113 return 0;
114 }
115 }
116 return bounds;
117 }
118