1 /*
2 * Copyright (c) 1996, 2008, 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 #define _JNI_IMPLEMENTATION_
27
28 #include "awt.h"
29 #include "awt_DrawingSurface.h"
30 #include "awt_Component.h"
31
32 jclass jawtVImgClass;
33 jclass jawtComponentClass;
34 jfieldID jawtPDataID;
35 jfieldID jawtSDataID;
36 jfieldID jawtSMgrID;
37
38
39 /* DSI */
40
41 jint JAWTDrawingSurfaceInfo::Init(JAWTDrawingSurface* parent)
42 {
43 TRY;
44
45 JNIEnv* env = parent->env;
46 jobject target = parent->target;
47 if (JNU_IsNull(env, target)) {
48 DTRACE_PRINTLN("NULL target");
49 return JAWT_LOCK_ERROR;
50 }
51 HWND newHwnd = AwtComponent::GetHWnd(env, target);
52 if (!::IsWindow(newHwnd)) {
53 DTRACE_PRINTLN("Bad HWND");
54 return JAWT_LOCK_ERROR;
55 }
56 jint retval = 0;
57 platformInfo = this;
58 ds = parent;
59 bounds.x = env->GetIntField(target, AwtComponent::xID);
60 bounds.y = env->GetIntField(target, AwtComponent::yID);
61 bounds.width = env->GetIntField(target, AwtComponent::widthID);
62 bounds.height = env->GetIntField(target, AwtComponent::heightID);
63 if (hwnd != newHwnd) {
64 if (hwnd != NULL) {
65 ::ReleaseDC(hwnd, hdc);
66 retval = JAWT_LOCK_SURFACE_CHANGED;
67 }
68 hwnd = newHwnd;
69 hdc = ::GetDCEx(hwnd, NULL, DCX_CACHE|DCX_CLIPCHILDREN|DCX_CLIPSIBLINGS);
70 }
71 clipSize = 1;
72 clip = &bounds;
73 int screen = AwtWin32GraphicsDevice::DeviceIndexForWindow(hwnd);
74 hpalette = AwtWin32GraphicsDevice::GetPalette(screen);
75
76 return retval;
77
78 CATCH_BAD_ALLOC_RET(JAWT_LOCK_ERROR);
79 }
80
81 jint JAWTOffscreenDrawingSurfaceInfo::Init(JAWTOffscreenDrawingSurface* parent)
82 {
83 TRY;
84
85 return JAWT_LOCK_ERROR;
86
87 CATCH_BAD_ALLOC_RET(JAWT_LOCK_ERROR);
88 }
89
90 /* Drawing Surface */
91
92 JAWTDrawingSurface::JAWTDrawingSurface(JNIEnv* pEnv, jobject rTarget)
93 {
94 TRY_NO_VERIFY;
95
96 env = pEnv;
97 target = env->NewGlobalRef(rTarget);
98 Lock = LockSurface;
99 GetDrawingSurfaceInfo = GetDSI;
100 FreeDrawingSurfaceInfo = FreeDSI;
101 Unlock = UnlockSurface;
102 info.hwnd = NULL;
103 info.hdc = NULL;
104 info.hpalette = NULL;
105
106 CATCH_BAD_ALLOC;
107 }
108
109 JAWTDrawingSurface::~JAWTDrawingSurface()
110 {
111 TRY_NO_VERIFY;
112
113 env->DeleteGlobalRef(target);
114
115 CATCH_BAD_ALLOC;
116 }
117
118 JAWT_DrawingSurfaceInfo* JNICALL JAWTDrawingSurface::GetDSI
119 (JAWT_DrawingSurface* ds)
120 {
121 TRY;
122
123 if (ds == NULL) {
124 DTRACE_PRINTLN("Drawing Surface is NULL");
125 return NULL;
126 }
127 JAWTDrawingSurface* pds = static_cast<JAWTDrawingSurface*>(ds);
128 return &(pds->info);
129
130 CATCH_BAD_ALLOC_RET(NULL);
131 }
132
133 void JNICALL JAWTDrawingSurface::FreeDSI
134 (JAWT_DrawingSurfaceInfo* dsi)
135 {
136 TRY_NO_VERIFY;
137
138 DASSERTMSG(dsi != NULL, "Drawing Surface Info is NULL\n");
139
140 JAWTDrawingSurfaceInfo* jdsi = static_cast<JAWTDrawingSurfaceInfo*>(dsi);
141
142 ::ReleaseDC(jdsi->hwnd, jdsi->hdc);
143
144 CATCH_BAD_ALLOC;
145 }
146
147 jint JNICALL JAWTDrawingSurface::LockSurface
148 (JAWT_DrawingSurface* ds)
149 {
150 TRY;
151
152 if (ds == NULL) {
153 DTRACE_PRINTLN("Drawing Surface is NULL");
154 return JAWT_LOCK_ERROR;
155 }
156 JAWTDrawingSurface* pds = static_cast<JAWTDrawingSurface*>(ds);
157 jint val = pds->info.Init(pds);
158 if ((val & JAWT_LOCK_ERROR) != 0) {
159 return val;
160 }
161 val = AwtComponent::GetDrawState(pds->info.hwnd);
162 AwtComponent::SetDrawState(pds->info.hwnd, 0);
163 return val;
164
165 CATCH_BAD_ALLOC_RET(JAWT_LOCK_ERROR);
166 }
167
168 void JNICALL JAWTDrawingSurface::UnlockSurface
169 (JAWT_DrawingSurface* ds)
170 {
171 TRY_NO_VERIFY;
172
173 if (ds == NULL) {
174 DTRACE_PRINTLN("Drawing Surface is NULL");
175 return;
176 }
177 JAWTDrawingSurface* pds = static_cast<JAWTDrawingSurface*>(ds);
178
179 CATCH_BAD_ALLOC;
180 }
181
182 JAWTOffscreenDrawingSurface::JAWTOffscreenDrawingSurface(JNIEnv* pEnv,
183 jobject rTarget)
184 {
185 TRY_NO_VERIFY;
186 env = pEnv;
187 target = env->NewGlobalRef(rTarget);
188 Lock = LockSurface;
189 GetDrawingSurfaceInfo = GetDSI;
190 FreeDrawingSurfaceInfo = FreeDSI;
191 Unlock = UnlockSurface;
192 info.dxSurface = NULL;
193 info.dx7Surface = NULL;
194
195 CATCH_BAD_ALLOC;
196 }
197
198 JAWTOffscreenDrawingSurface::~JAWTOffscreenDrawingSurface()
199 {
200 env->DeleteGlobalRef(target);
201 }
202
203 JAWT_DrawingSurfaceInfo* JNICALL JAWTOffscreenDrawingSurface::GetDSI
204 (JAWT_DrawingSurface* ds)
205 {
206 TRY;
207
208 if (ds == NULL) {
209 DTRACE_PRINTLN("Drawing Surface is NULL");
210 return NULL;
211 }
212 JAWTOffscreenDrawingSurface* pds =
213 static_cast<JAWTOffscreenDrawingSurface*>(ds);
214 return &(pds->info);
215
216 CATCH_BAD_ALLOC_RET(NULL);
217 }
218
219 void JNICALL JAWTOffscreenDrawingSurface::FreeDSI
220 (JAWT_DrawingSurfaceInfo* dsi)
221 {
222 }
223
224 jint JNICALL JAWTOffscreenDrawingSurface::LockSurface
225 (JAWT_DrawingSurface* ds)
226 {
227 return JAWT_LOCK_ERROR;
228 }
229
230 void JNICALL JAWTOffscreenDrawingSurface::UnlockSurface
231 (JAWT_DrawingSurface* ds)
232 {
233 }
234
235 /* C exports */
236
237 extern "C" JNIEXPORT JAWT_DrawingSurface* JNICALL DSGetDrawingSurface
238 (JNIEnv* env, jobject target)
239 {
240 TRY;
241
242 // See if the target component is a java.awt.Component
243 if (env->IsInstanceOf(target, jawtComponentClass)) {
244 return new JAWTDrawingSurface(env, target);
245 }
246
247 DTRACE_PRINTLN("GetDrawingSurface target must be a Component");
248 return NULL;
249
250 CATCH_BAD_ALLOC_RET(NULL);
251 }
252
253 extern "C" JNIEXPORT void JNICALL DSFreeDrawingSurface
254 (JAWT_DrawingSurface* ds)
255 {
256 TRY_NO_VERIFY;
257
258 if (ds == NULL) {
259 DTRACE_PRINTLN("Drawing Surface is NULL");
260 }
261 delete static_cast<JAWTDrawingSurface*>(ds);
262
263 CATCH_BAD_ALLOC;
264 }
265
266 extern "C" JNIEXPORT void JNICALL DSLockAWT(JNIEnv* env)
267 {
268 // Do nothing on Windows
269 }
270
271 extern "C" JNIEXPORT void JNICALL DSUnlockAWT(JNIEnv* env)
272 {
273 // Do nothing on Windows
274 }