1 /*
2 * Copyright (c) 1996, 2011, 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 #ifdef HEADLESS
27 #error This file should not be included in headless library
28 #endif
29
30 #include "awt_p.h"
31 #include "java_awt_Component.h"
32 //#include "sun_awt_motif_MComponentPeer.h"
33
34 #include "awt_Component.h"
35
36
37 #include <jni.h>
38 #include <jni_util.h>
39 #include <jawt_md.h>
40
41 extern struct MComponentPeerIDs mComponentPeerIDs;
42 extern struct ComponentIDs componentIDs;
43 #ifndef XAWT
44 extern AwtGraphicsConfigDataPtr
45 getGraphicsConfigFromComponentPeer(JNIEnv *env, jobject this);
46 #endif
47
48 #ifdef XAWT
49 #include "awt_GraphicsEnv.h"
50 extern jfieldID windowID;
51 extern jfieldID targetID;
52 extern jfieldID graphicsConfigID;
53 extern jfieldID drawStateID;
54 extern struct X11GraphicsConfigIDs x11GraphicsConfigIDs;
55 #endif
56
57 /*
58 * Lock the surface of the target component for native rendering.
59 * When finished drawing, the surface must be unlocked with
60 * Unlock(). This function returns a bitmask with one or more of the
61 * following values:
62 *
63 * JAWT_LOCK_ERROR - When an error has occurred and the surface could not
64 * be locked.
65 *
66 * JAWT_LOCK_CLIP_CHANGED - When the clip region has changed.
67 *
68 * JAWT_LOCK_BOUNDS_CHANGED - When the bounds of the surface have changed.
69 *
70 * JAWT_LOCK_SURFACE_CHANGED - When the surface itself has changed
71 */
72 JNIEXPORT jint JNICALL awt_DrawingSurface_Lock(JAWT_DrawingSurface* ds)
73 {
74 JNIEnv* env;
75 jobject target, peer;
76 jclass componentClass;
77 jint drawState;
78
79 if (ds == NULL) {
80 #ifdef DEBUG
81 fprintf(stderr, "Drawing Surface is NULL\n");
82 #endif
83 return (jint)JAWT_LOCK_ERROR;
84 }
85 env = ds->env;
86 target = ds->target;
87
88 /* Make sure the target is a java.awt.Component */
89 componentClass = (*env)->FindClass(env, "java/awt/Component");
90 if (!(*env)->IsInstanceOf(env, target, componentClass)) {
91 #ifdef DEBUG
92 fprintf(stderr, "Target is not a component\n");
93 #endif
94 return (jint)JAWT_LOCK_ERROR;
95 }
96
97 if (!awtLockInited) {
98 return (jint)JAWT_LOCK_ERROR;
99 }
100 AWT_LOCK();
101
102 /* Get the peer of the target component */
103 peer = (*env)->GetObjectField(env, target, componentIDs.peer);
104 if (JNU_IsNull(env, peer)) {
105 #ifdef DEBUG
106 fprintf(stderr, "Component peer is NULL\n");
107 #endif
108 AWT_FLUSH_UNLOCK();
109 return (jint)JAWT_LOCK_ERROR;
110 }
111
112 #ifndef XAWT
113 drawState = (*env)->GetIntField(env, peer, mComponentPeerIDs.drawState);
114 (*env)->SetIntField(env, peer, mComponentPeerIDs.drawState, 0);
115 #else
116 drawState = (*env)->GetIntField(env, peer, drawStateID);
117 (*env)->SetIntField(env, peer, drawStateID, 0);
118 #endif
119 return drawState;
120 }
121
122 JNIEXPORT int32_t JNICALL
123 awt_GetColor(JAWT_DrawingSurface* ds, int32_t r, int32_t g, int32_t b)
124 {
125 JNIEnv* env;
126 jobject target, peer;
127 jclass componentClass;
128 AwtGraphicsConfigDataPtr adata;
129 int32_t result;
130 #ifdef XAWT
131 jobject gc_object;
132 #endif
133 if (ds == NULL) {
134 #ifdef DEBUG
135 fprintf(stderr, "Drawing Surface is NULL\n");
136 #endif
137 return (int32_t) 0;
138 }
139
140 env = ds->env;
141 target = ds->target;
142
143 /* Make sure the target is a java.awt.Component */
144 componentClass = (*env)->FindClass(env, "java/awt/Component");
145 if (!(*env)->IsInstanceOf(env, target, componentClass)) {
146 #ifdef DEBUG
147 fprintf(stderr, "DrawingSurface target must be a component\n");
148 #endif
149 return (int32_t) 0;
150 }
151
152 if (!awtLockInited) {
153 return (int32_t) 0;
154 }
155
156 AWT_LOCK();
157
158 /* Get the peer of the target component */
159 peer = (*env)->GetObjectField(env, target, componentIDs.peer);
160 if (JNU_IsNull(env, peer)) {
161 #ifdef DEBUG
162 fprintf(stderr, "Component peer is NULL\n");
163 #endif
164 AWT_UNLOCK();
165 return (int32_t) 0;
166 }
167 #ifndef XAWT
168 adata = getGraphicsConfigFromComponentPeer(env, peer);
169 #else
170 /* GraphicsConfiguration object of MComponentPeer */
171 gc_object = (*env)->GetObjectField(env, peer, graphicsConfigID);
172
173 if (gc_object != NULL) {
174 adata = (AwtGraphicsConfigDataPtr)
175 JNU_GetLongFieldAsPtr(env, gc_object,
176 x11GraphicsConfigIDs.aData);
177 } else {
178 adata = getDefaultConfig(DefaultScreen(awt_display));
179 }
180 #endif
181
182 result = adata->AwtColorMatch(r, g, b, adata);
183 AWT_UNLOCK();
184 return result;
185 }
186
187 /*
188 * Get the drawing surface info.
189 * The value returned may be cached, but the values may change if
190 * additional calls to Lock() or Unlock() are made.
191 * Lock() must be called before this can return a valid value.
192 * Returns NULL if an error has occurred.
193 * When finished with the returned value, FreeDrawingSurfaceInfo must be
194 * called.
195 */
196 JNIEXPORT JAWT_DrawingSurfaceInfo* JNICALL
197 awt_DrawingSurface_GetDrawingSurfaceInfo(JAWT_DrawingSurface* ds)
198 {
199 JNIEnv* env;
200 jobject target, peer;
201 jclass componentClass;
202 JAWT_X11DrawingSurfaceInfo* px;
203 JAWT_DrawingSurfaceInfo* p;
204 #ifndef XAWT
205 struct ComponentData *cdata;
206 #endif
207 XWindowAttributes attrs;
208
209 if (ds == NULL) {
210 #ifdef DEBUG
211 fprintf(stderr, "Drawing Surface is NULL\n");
212 #endif
213 return NULL;
214 }
215
216 env = ds->env;
217 target = ds->target;
218
219 /* Make sure the target is a java.awt.Component */
220 componentClass = (*env)->FindClass(env, "java/awt/Component");
221 if (!(*env)->IsInstanceOf(env, target, componentClass)) {
222 #ifdef DEBUG
223 fprintf(stderr, "DrawingSurface target must be a component\n");
224 #endif
225 return NULL;
226 }
227
228 if (!awtLockInited) {
229 return NULL;
230 }
231
232 AWT_LOCK();
233
234 /* Get the peer of the target component */
235 peer = (*env)->GetObjectField(env, target, componentIDs.peer);
236 if (JNU_IsNull(env, peer)) {
237 #ifdef DEBUG
238 fprintf(stderr, "Component peer is NULL\n");
239 #endif
240 AWT_UNLOCK();
241 return NULL;
242 }
243
244 #ifndef XAWT
245 /* Get the component data from the peer */
246 cdata = (struct ComponentData *)
247 JNU_GetLongFieldAsPtr(env, peer, mComponentPeerIDs.pData);
248 if (cdata == NULL) {
249 #ifdef DEBUG
250 fprintf(stderr, "Component data is NULL\n");
251 #endif
252 AWT_UNLOCK();
253 return NULL;
254 }
255 #endif
256
257 AWT_UNLOCK();
258
259 /* Allocate platform-specific data */
260 px = (JAWT_X11DrawingSurfaceInfo*)
261 malloc(sizeof(JAWT_X11DrawingSurfaceInfo));
262
263 /* Set drawable and display */
264 #ifndef XAWT
265 px->drawable = XtWindow(cdata->widget);
266 #else
267 px->drawable = (*env)->GetLongField(env, peer, windowID);
268 #endif
269 px->display = awt_display;
270
271 /* Get window attributes to set other values */
272 XGetWindowAttributes(awt_display, (Window)(px->drawable), &attrs);
273
274 /* Set the other values */
275 px->visualID = XVisualIDFromVisual(attrs.visual);
276 px->colormapID = attrs.colormap;
277 px->depth = attrs.depth;
278 px->GetAWTColor = awt_GetColor;
279
280 /* Allocate and initialize platform-independent data */
281 p = (JAWT_DrawingSurfaceInfo*)malloc(sizeof(JAWT_DrawingSurfaceInfo));
282 p->platformInfo = px;
283 p->ds = ds;
284 p->bounds.x = (*env)->GetIntField(env, target, componentIDs.x);
285 p->bounds.y = (*env)->GetIntField(env, target, componentIDs.y);
286 p->bounds.width = (*env)->GetIntField(env, target, componentIDs.width);
287 p->bounds.height = (*env)->GetIntField(env, target, componentIDs.height);
288 p->clipSize = 1;
289 p->clip = &(p->bounds);
290
291 /* Return our new structure */
292 return p;
293 }
294
295 /*
296 * Free the drawing surface info.
297 */
298 JNIEXPORT void JNICALL
299 awt_DrawingSurface_FreeDrawingSurfaceInfo(JAWT_DrawingSurfaceInfo* dsi)
300 {
301 if (dsi == NULL ) {
302 #ifdef DEBUG
303 fprintf(stderr, "Drawing Surface Info is NULL\n");
304 #endif
305 return;
306 }
307 free(dsi->platformInfo);
308 free(dsi);
309 }
310
311 /*
312 * Unlock the drawing surface of the target component for native rendering.
313 */
314 JNIEXPORT void JNICALL awt_DrawingSurface_Unlock(JAWT_DrawingSurface* ds)
315 {
316 JNIEnv* env;
317 if (ds == NULL) {
318 #ifdef DEBUG
319 fprintf(stderr, "Drawing Surface is NULL\n");
320 #endif
321 return;
322 }
323 env = ds->env;
324 AWT_FLUSH_UNLOCK();
325 }
326
327 JNIEXPORT JAWT_DrawingSurface* JNICALL
328 awt_GetDrawingSurface(JNIEnv* env, jobject target)
329 {
330 jclass componentClass;
331 JAWT_DrawingSurface* p;
332
333 /* Make sure the target component is a java.awt.Component */
334 componentClass = (*env)->FindClass(env, "java/awt/Component");
335 if (!(*env)->IsInstanceOf(env, target, componentClass)) {
336 #ifdef DEBUG
337 fprintf(stderr,
338 "GetDrawingSurface target must be a java.awt.Component\n");
339 #endif
340 return NULL;
341 }
342
343 p = (JAWT_DrawingSurface*)malloc(sizeof(JAWT_DrawingSurface));
344 p->env = env;
345 p->target = (*env)->NewGlobalRef(env, target);
346 p->Lock = awt_DrawingSurface_Lock;
347 p->GetDrawingSurfaceInfo = awt_DrawingSurface_GetDrawingSurfaceInfo;
348 p->FreeDrawingSurfaceInfo = awt_DrawingSurface_FreeDrawingSurfaceInfo;
349 p->Unlock = awt_DrawingSurface_Unlock;
350 return p;
351 }
352
353 JNIEXPORT void JNICALL
354 awt_FreeDrawingSurface(JAWT_DrawingSurface* ds)
355 {
356 JNIEnv* env;
357
358 if (ds == NULL ) {
359 #ifdef DEBUG
360 fprintf(stderr, "Drawing Surface is NULL\n");
361 #endif
362 return;
363 }
364 env = ds->env;
365 (*env)->DeleteGlobalRef(env, ds->target);
366 free(ds);
367 }
368
369 JNIEXPORT void JNICALL
370 awt_Lock(JNIEnv* env)
371 {
372 if (awtLockInited) {
373 AWT_LOCK();
374 }
375 }
376
377 JNIEXPORT void JNICALL
378 awt_Unlock(JNIEnv* env)
379 {
380 if (awtLockInited) {
381 AWT_FLUSH_UNLOCK();
382 }
383 }
384
385 JNIEXPORT jobject JNICALL
386 awt_GetComponent(JNIEnv* env, void* platformInfo)
387 {
388 Window window = (Window)platformInfo;
389 Widget widget = NULL;
390 jobject peer = NULL;
391 jobject target = NULL;
392
393 AWT_LOCK();
394
395 #ifndef XAWT
396 if (window != None) {
397 widget = XtWindowToWidget(awt_display, window);
398 }
399
400 if (widget != NULL) {
401 XtVaGetValues (widget, XmNuserData, &peer, NULL);
402 }
403
404 if (peer != NULL) {
405 target = (*env)->GetObjectField(env, peer, mComponentPeerIDs.target);
406 }
407 #else
408 target = (*env)->GetObjectField(env, peer, targetID);
409 #endif
410
411 if (target == NULL) {
412 JNU_ThrowNullPointerException(env, "NullPointerException");
413 AWT_UNLOCK();
414 return (jobject)NULL;
415 }
416
417
418 AWT_UNLOCK();
419
420 return target;
421 }