1/*
2 * Copyright (c) 1999, 2013, 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 "X11SurfaceData.h"
27#include "GraphicsPrimitiveMgr.h"
28#include "Region.h"
29#include "Trace.h"
30
31/* Needed to define intptr_t */
32#include "gdefs.h"
33
34#include "jni_util.h"
35#include "jvm_md.h"
36#include "awt_Component.h"
37#include "awt_GraphicsEnv.h"
38
39#include <dlfcn.h>
40
41#ifndef HEADLESS
42
43/**
44 * This file contains support code for loops using the SurfaceData
45 * interface to talk to an X11 drawable from native code.
46 */
47
48typedef struct _X11RIPrivate {
49 jint lockType;
50 jint lockFlags;
51 XImage *img;
52 int x, y;
53} X11RIPrivate;
54
55#define XSD_MAX(a,b) ((a) > (b) ? (a) : (b))
56#define XSD_MIN(a,b) ((a) < (b) ? (a) : (b))
57
58static LockFunc X11SD_Lock;
59static GetRasInfoFunc X11SD_GetRasInfo;
60static UnlockFunc X11SD_Unlock;
61static DisposeFunc X11SD_Dispose;
62static GetPixmapBgFunc X11SD_GetPixmapWithBg;
63static ReleasePixmapBgFunc X11SD_ReleasePixmapWithBg;
64extern int XShmAttachXErrHandler(Display *display, XErrorEvent *xerr);
65extern AwtGraphicsConfigDataPtr
66 getGraphicsConfigFromComponentPeer(JNIEnv *env, jobject this);
67extern struct X11GraphicsConfigIDs x11GraphicsConfigIDs;
68
69static int X11SD_FindClip(SurfaceDataBounds *b, SurfaceDataBounds *bounds,
70 X11SDOps *xsdo);
71static int X11SD_ClipToRoot(SurfaceDataBounds *b, SurfaceDataBounds *bounds,
72 X11SDOps *xsdo);
73static void X11SD_SwapBytes(X11SDOps *xsdo, XImage *img, int depth, int bpp);
74static XImage * X11SD_GetImage(JNIEnv *env, X11SDOps *xsdo,
75 SurfaceDataBounds *bounds,
76 jint lockFlags);
77
78extern jfieldID validID;
79
80static int nativeByteOrder;
81static jclass xorCompClass;
82
83jint useMitShmExt = CANT_USE_MITSHM;
84jint useMitShmPixmaps = CANT_USE_MITSHM;
85jint forceSharedPixmaps = JNI_FALSE;
86
87#ifdef MITSHM
88int mitShmPermissionMask = MITSHM_PERM_OWNER;
89#endif
90
91/* Cached shared image, one for all surface datas. */
92static XImage * cachedXImage;
93
94#endif /* !HEADLESS */
95
96jboolean XShared_initIDs(JNIEnv *env, jboolean allowShmPixmaps)
97{
98#ifndef HEADLESS
99 union {
100 char c[4];
101 int i;
102 } endian;
103
104 endian.i = 0xff000000;
105 nativeByteOrder = (endian.c[0]) ? MSBFirst : LSBFirst;
106
107 cachedXImage = NULL;
108
109 if (sizeof(X11RIPrivate) > SD_RASINFO_PRIVATE_SIZE) {
110 JNU_ThrowInternalError(env, "Private RasInfo structure too large!");
111 return JNI_FALSE;
112 }
113
114#ifdef MITSHM
115 if (getenv("NO_AWT_MITSHM") == NULL &&
116 getenv("NO_J2D_MITSHM") == NULL) {
117 char * force;
118 char * permission = getenv("J2D_MITSHM_PERMISSION");
119 if (permission != NULL) {
120 if (strcmp(permission, "common") == 0) {
121 mitShmPermissionMask = MITSHM_PERM_COMMON;
122 }
123 }
124
125 TryInitMITShm(env, &useMitShmExt, &useMitShmPixmaps);
126
127 if(allowShmPixmaps) {
128 useMitShmPixmaps = (useMitShmPixmaps == CAN_USE_MITSHM);
129 force = getenv("J2D_PIXMAPS");
130 if (force != NULL) {
131 if (useMitShmPixmaps && (strcmp(force, "shared") == 0)) {
132 forceSharedPixmaps = JNI_TRUE;
133 } else if (strcmp(force, "server") == 0) {
134 useMitShmPixmaps = JNI_FALSE;
135 }
136 }
137 }else {
138 useMitShmPixmaps = JNI_FALSE;
139 }
140 }
141#endif /* MITSHM */
142
143#endif /* !HEADLESS */
144
145 return JNI_TRUE;
146}
147
148
149/*
150 * Class: sun_java2d_x11_X11SurfaceData
151 * Method: initIDs
152 * Signature: (Ljava/lang/Class;Z)V
153 */
154JNIEXPORT void JNICALL
155Java_sun_java2d_x11_X11SurfaceData_initIDs(JNIEnv *env, jclass xsd,
156 jclass XORComp)
157{
158#ifndef HEADLESS
159 if(XShared_initIDs(env, JNI_TRUE))
160 {
161 xorCompClass = (*env)->NewGlobalRef(env, XORComp);
162 }
163#endif /* !HEADLESS */
164}
165
166/*
167 * Class: sun_java2d_x11_X11SurfaceData
168 * Method: isDrawableValid
169 * Signature: ()Z
170 */
171JNIEXPORT jboolean JNICALL
172Java_sun_java2d_x11_XSurfaceData_isDrawableValid(JNIEnv *env, jobject this)
173{
174 jboolean ret = JNI_FALSE;
175
176#ifndef HEADLESS
177 X11SDOps *xsdo = X11SurfaceData_GetOps(env, this);
178
179 AWT_LOCK();
180 if (xsdo->drawable != 0 || X11SD_InitWindow(env, xsdo) == SD_SUCCESS) {
181 ret = JNI_TRUE;
182 }
183 AWT_UNLOCK();
184#endif /* !HEADLESS */
185
186 return ret;
187}
188
189/*
190 * Class: sun_java2d_x11_X11SurfaceData
191 * Method: isShmPMAvailable
192 * Signature: ()Z
193 */
194JNIEXPORT jboolean JNICALL
195Java_sun_java2d_x11_X11SurfaceData_isShmPMAvailable(JNIEnv *env, jobject this)
196{
197#if defined(HEADLESS) || !defined(MITSHM)
198 return JNI_FALSE;
199#else
200 return (jboolean)useMitShmPixmaps;
201#endif /* HEADLESS, MITSHM */
202}
203
204/*
205 * Class: sun_java2d_x11_X11SurfaceData
206 * Method: initOps
207 * Signature: (Ljava/lang/Object;I)V
208 */
209JNIEXPORT void JNICALL
210Java_sun_java2d_x11_XSurfaceData_initOps(JNIEnv *env, jobject xsd,
211 jobject peer,
212 jobject graphicsConfig, jint depth)
213{
214#ifndef HEADLESS
215 X11SDOps *xsdo = (X11SDOps*)SurfaceData_InitOps(env, xsd, sizeof(X11SDOps));
216 jboolean hasException;
217 if (xsdo == NULL) {
218 JNU_ThrowOutOfMemoryError(env, "Initialization of SurfaceData failed.");
219 return;
220 }
221 xsdo->sdOps.Lock = X11SD_Lock;
222 xsdo->sdOps.GetRasInfo = X11SD_GetRasInfo;
223 xsdo->sdOps.Unlock = X11SD_Unlock;
224 xsdo->sdOps.Dispose = X11SD_Dispose;
225 xsdo->GetPixmapWithBg = X11SD_GetPixmapWithBg;
226 xsdo->ReleasePixmapWithBg = X11SD_ReleasePixmapWithBg;
227 if (peer != NULL) {
228 xsdo->drawable = JNU_CallMethodByName(env, &hasException, peer, "getWindow", "()J").j;
229 if (hasException) {
230 return;
231 }
232 } else {
233 xsdo->drawable = 0;
234 }
235 xsdo->depth = depth;
236 xsdo->isPixmap = JNI_FALSE;
237 xsdo->bitmask = 0;
238 xsdo->bgPixel = 0;
239 xsdo->isBgInitialized = JNI_FALSE;
240#ifdef MITSHM
241 xsdo->shmPMData.shmSegInfo = NULL;
242 xsdo->shmPMData.xRequestSent = JNI_FALSE;
243 xsdo->shmPMData.pmSize = 0;
244 xsdo->shmPMData.usingShmPixmap = JNI_FALSE;
245 xsdo->shmPMData.pixmap = 0;
246 xsdo->shmPMData.shmPixmap = 0;
247 xsdo->shmPMData.numBltsSinceRead = 0;
248 xsdo->shmPMData.pixelsReadSinceBlt = 0;
249 xsdo->shmPMData.numBltsThreshold = 2;
250#endif /* MITSHM */
251
252 xsdo->configData = (AwtGraphicsConfigDataPtr)
253 JNU_GetLongFieldAsPtr(env,
254 graphicsConfig,
255 x11GraphicsConfigIDs.aData);
256 if (xsdo->configData == NULL) {
257 JNU_ThrowNullPointerException(env,
258 "Native GraphicsConfig data block missing");
259 return;
260 }
261 if (depth > 12) {
262 xsdo->pixelmask = (xsdo->configData->awt_visInfo.red_mask |
263 xsdo->configData->awt_visInfo.green_mask |
264 xsdo->configData->awt_visInfo.blue_mask);
265 } else if (depth == 12) {
266 xsdo->pixelmask = 0xfff;
267 } else {
268 xsdo->pixelmask = 0xff;
269 }
270
271 xsdo->xrPic = None;
272#endif /* !HEADLESS */
273}
274
275/*
276 * Class: sun_java2d_x11_X11SurfaceData
277 * Method: flushNativeSurface
278 * Signature: ()V
279 */
280JNIEXPORT void JNICALL
281Java_sun_java2d_x11_XSurfaceData_flushNativeSurface(JNIEnv *env, jobject xsd)
282{
283#ifndef HEADLESS
284 SurfaceDataOps *ops = SurfaceData_GetOps(env, xsd);
285
286 if (ops != NULL) {
287 X11SD_Dispose(env, ops);
288 }
289#endif /* !HEADLESS */
290}
291
292
293JNIEXPORT X11SDOps * JNICALL
294X11SurfaceData_GetOps(JNIEnv *env, jobject sData)
295{
296#ifdef HEADLESS
297 return NULL;
298#else
299 SurfaceDataOps *ops = SurfaceData_GetOps(env, sData);
300 if (ops != NULL && ops->Lock != X11SD_Lock) {
301 SurfaceData_ThrowInvalidPipeException(env, "not an X11 SurfaceData");
302 ops = NULL;
303 }
304 return (X11SDOps *) ops;
305#endif /* !HEADLESS */
306}
307
308/*
309 * Method for disposing X11SD-specific data
310 */
311static void
312X11SD_Dispose(JNIEnv *env, SurfaceDataOps *ops)
313{
314#ifndef HEADLESS
315 /* ops is assumed non-null as it is checked in SurfaceData_DisposeOps */
316 X11SDOps * xsdo = (X11SDOps*)ops;
317
318 AWT_LOCK();
319
320 xsdo->invalid = JNI_TRUE;
321
322 if (xsdo->xrPic != None) {
323 XRenderFreePicture(awt_display, xsdo->xrPic);
324 xsdo->xrPic = None;
325 }
326
327 if (xsdo->isPixmap == JNI_TRUE && xsdo->drawable != 0) {
328#ifdef MITSHM
329 if (xsdo->shmPMData.shmSegInfo != NULL) {
330 X11SD_DropSharedSegment(xsdo->shmPMData.shmSegInfo);
331 xsdo->shmPMData.shmSegInfo = NULL;
332 }
333 if (xsdo->shmPMData.pixmap) {
334 XFreePixmap(awt_display, xsdo->shmPMData.pixmap);
335 xsdo->shmPMData.pixmap = 0;
336 }
337 if (xsdo->shmPMData.shmPixmap) {
338 XFreePixmap(awt_display, xsdo->shmPMData.shmPixmap);
339 xsdo->shmPMData.shmPixmap = 0;
340 }
341#else
342 XFreePixmap(awt_display, xsdo->drawable);
343#endif /* MITSHM */
344 xsdo->drawable = 0;
345 }
346 if (xsdo->bitmask != 0) {
347 XFreePixmap(awt_display, xsdo->bitmask);
348 xsdo->bitmask = 0;
349 }
350 if (xsdo->javaGC != NULL) {
351 XFreeGC(awt_display, xsdo->javaGC);
352 xsdo->javaGC = NULL;
353 }
354 if (xsdo->cachedGC != NULL) {
355 XFreeGC(awt_display, xsdo->cachedGC);
356 xsdo->cachedGC = NULL;
357 }
358
359 if(xsdo->xrPic != None) {
360 XRenderFreePicture(awt_display, xsdo->xrPic);
361 }
362
363 AWT_UNLOCK();
364#endif /* !HEADLESS */
365}
366/*
367 * Class: sun_java2d_x11_X11SurfaceData
368 * Method: setInvalid
369 * Signature: ()V
370 */
371JNIEXPORT void JNICALL
372Java_sun_java2d_x11_XSurfaceData_setInvalid(JNIEnv *env, jobject xsd)
373{
374#ifndef HEADLESS
375 X11SDOps *xsdo = (X11SDOps *) SurfaceData_GetOps(env, xsd);
376
377 if (xsdo != NULL) {
378 xsdo->invalid = JNI_TRUE;
379 }
380#endif /* !HEADLESS */
381}
382
383
384jboolean XShared_initSurface(JNIEnv *env, X11SDOps *xsdo, jint depth, jint width, jint height, jlong drawable)
385{
386#ifndef HEADLESS
387
388 if (drawable != (jlong)0) {
389 /* Double-buffering */
390 xsdo->drawable = drawable;
391 xsdo->isPixmap = JNI_FALSE;
392 } else {
393 /*
394 * width , height must be nonzero otherwise XCreatePixmap
395 * generates BadValue in error_handler
396 */
397 if (width <= 0 || height <= 0 || width > 32767 || height > 32767) {
398 JNU_ThrowOutOfMemoryError(env,
399 "Can't create offscreen surface");
400 return JNI_FALSE;
401 }
402 xsdo->isPixmap = JNI_TRUE;
403
404 xsdo->pmWidth = width;
405 xsdo->pmHeight = height;
406
407#ifdef MITSHM
408 xsdo->shmPMData.pmSize = width * height * depth;
409 xsdo->shmPMData.pixelsReadThreshold = width * height / 8;
410 if (forceSharedPixmaps) {
411 AWT_LOCK();
412 xsdo->drawable = X11SD_CreateSharedPixmap(xsdo);
413 AWT_UNLOCK();
414 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE);
415 if (xsdo->drawable) {
416 xsdo->shmPMData.usingShmPixmap = JNI_TRUE;
417 xsdo->shmPMData.shmPixmap = xsdo->drawable;
418 return JNI_TRUE;
419 }
420 }
421#endif /* MITSHM */
422
423 AWT_LOCK();
424 xsdo->drawable =
425 XCreatePixmap(awt_display,
426 RootWindow(awt_display,
427 xsdo->configData->awt_visInfo.screen),
428 width, height, depth);
429 AWT_UNLOCK();
430 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE);
431#ifdef MITSHM
432 xsdo->shmPMData.usingShmPixmap = JNI_FALSE;
433 xsdo->shmPMData.pixmap = xsdo->drawable;
434#endif /* MITSHM */
435 }
436 if (xsdo->drawable == 0) {
437 JNU_ThrowOutOfMemoryError(env,
438 "Can't create offscreen surface");
439 return JNI_FALSE;
440 }
441
442#endif /* !HEADLESS */
443 return JNI_TRUE;
444}
445
446
447/*
448 * Class: sun_java2d_x11_X11SurfaceData
449 * Method: initSurface
450 * Signature: ()V
451 */
452JNIEXPORT void JNICALL
453Java_sun_java2d_x11_X11SurfaceData_initSurface(JNIEnv *env, jclass xsd,
454 jint depth,
455 jint width, jint height,
456 jlong drawable)
457{
458#ifndef HEADLESS
459 X11SDOps *xsdo = X11SurfaceData_GetOps(env, xsd);
460 if (xsdo == NULL) {
461 return;
462 }
463
464 if (xsdo->configData->awt_cmap == (Colormap)NULL) {
465 awtJNI_CreateColorData(env, xsdo->configData, 1);
466 JNU_CHECK_EXCEPTION(env);
467 }
468 /* color_data will be initialized in awtJNI_CreateColorData for
469 8-bit visuals */
470 xsdo->cData = xsdo->configData->color_data;
471
472 XShared_initSurface(env, xsdo, depth, width, height, drawable);
473 xsdo->xrPic = None;
474#endif /* !HEADLESS */
475}
476
477#ifndef HEADLESS
478
479#ifdef MITSHM
480
481void X11SD_DropSharedSegment(XShmSegmentInfo *shminfo)
482{
483 if (shminfo != NULL) {
484 XShmDetach(awt_display, shminfo);
485 shmdt(shminfo->shmaddr);
486/* REMIND: we don't need shmctl(shminfo->shmid, IPC_RMID, 0); here. */
487/* Check X11SD_CreateSharedImage() for the explanation */
488 }
489}
490
491XImage* X11SD_CreateSharedImage(X11SDOps *xsdo,
492 jint width, jint height)
493{
494 XImage *img = NULL;
495 XShmSegmentInfo *shminfo;
496
497 shminfo = malloc(sizeof(XShmSegmentInfo));
498 if (shminfo == NULL) {
499 return NULL;
500 }
501 memset(shminfo, 0, sizeof(XShmSegmentInfo));
502
503 img = XShmCreateImage(awt_display, xsdo->configData->awt_visInfo.visual,
504 xsdo->depth, ZPixmap, NULL, shminfo,
505 width, height);
506 if (img == NULL) {
507 free((void *)shminfo);
508 return NULL;
509 }
510 shminfo->shmid =
511 shmget(IPC_PRIVATE, height * img->bytes_per_line,
512 IPC_CREAT|mitShmPermissionMask);
513 if (shminfo->shmid < 0) {
514 J2dRlsTraceLn1(J2D_TRACE_ERROR,
515 "X11SD_SetupSharedSegment shmget has failed: %s",
516 strerror(errno));
517 free((void *)shminfo);
518 XDestroyImage(img);
519 return NULL;
520 }
521
522 shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
523 if (shminfo->shmaddr == ((char *) -1)) {
524 shmctl(shminfo->shmid, IPC_RMID, 0);
525 J2dRlsTraceLn1(J2D_TRACE_ERROR,
526 "X11SD_SetupSharedSegment shmat has failed: %s",
527 strerror(errno));
528 free((void *)shminfo);
529 XDestroyImage(img);
530 return NULL;
531 }
532
533 shminfo->readOnly = False;
534
535 resetXShmAttachFailed();
536 EXEC_WITH_XERROR_HANDLER(XShmAttachXErrHandler,
537 XShmAttach(awt_display, shminfo));
538
539 /*
540 * Once the XSync round trip has finished then we
541 * can get rid of the id so that this segment does not stick
542 * around after we go away, holding system resources.
543 */
544 shmctl(shminfo->shmid, IPC_RMID, 0);
545
546 if (isXShmAttachFailed() == JNI_TRUE) {
547 J2dRlsTraceLn1(J2D_TRACE_ERROR,
548 "X11SD_SetupSharedSegment XShmAttach has failed: %s",
549 strerror(errno));
550 shmdt(shminfo->shmaddr);
551 free((void *)shminfo);
552 XDestroyImage(img);
553 return NULL;
554 }
555
556 img->data = shminfo->shmaddr;
557 img->obdata = (char *)shminfo;
558
559 return img;
560}
561
562XImage* X11SD_GetSharedImage(X11SDOps *xsdo, jint width, jint height,
563 jint maxWidth, jint maxHeight, jboolean readBits)
564{
565 XImage * retImage = NULL;
566 if (cachedXImage != NULL &&
567 X11SD_CachedXImageFits(width, height, maxWidth, maxHeight,
568 xsdo->depth, readBits)) {
569 /* sync so previous data gets flushed */
570 XSync(awt_display, False);
571 retImage = cachedXImage;
572 cachedXImage = (XImage *)NULL;
573 } else if (width * height * xsdo->depth > 0x10000) {
574 retImage = X11SD_CreateSharedImage(xsdo, width, height);
575 }
576 return retImage;
577}
578
579Drawable X11SD_CreateSharedPixmap(X11SDOps *xsdo)
580{
581 XShmSegmentInfo *shminfo;
582 XImage *img = NULL;
583 Drawable pixmap;
584 int scan;
585 int width = xsdo->pmWidth;
586 int height = xsdo->pmHeight;
587
588 if (xsdo->shmPMData.pmSize < 0x10000) {
589 /* only use shared mem pixmaps for relatively big images */
590 return 0;
591 }
592
593 /* need to create shared(!) image to get bytes_per_line */
594 img = X11SD_CreateSharedImage(xsdo, width, height);
595 if (img == NULL) {
596 return 0;
597 }
598 scan = img->bytes_per_line;
599 shminfo = (XShmSegmentInfo*)img->obdata;
600 XFree(img);
601
602 pixmap =
603 XShmCreatePixmap(awt_display,
604 RootWindow(awt_display,
605 xsdo->configData->awt_visInfo.screen),
606 shminfo->shmaddr, shminfo,
607 width, height, xsdo->depth);
608 if (pixmap == 0) {
609 X11SD_DropSharedSegment(shminfo);
610 return 0;
611 }
612
613 xsdo->shmPMData.shmSegInfo = shminfo;
614 xsdo->shmPMData.bytesPerLine = scan;
615 return pixmap;
616}
617
618void X11SD_PuntPixmap(X11SDOps *xsdo, jint width, jint height)
619{
620
621 if (useMitShmPixmaps != CAN_USE_MITSHM || forceSharedPixmaps) {
622 return;
623 }
624
625 /* we wouldn't be here if it's a shared pixmap, so no check
626 * for !usingShmPixmap.
627 */
628
629 xsdo->shmPMData.numBltsSinceRead = 0;
630
631 xsdo->shmPMData.pixelsReadSinceBlt += width * height;
632 if (xsdo->shmPMData.pixelsReadSinceBlt >
633 xsdo->shmPMData.pixelsReadThreshold) {
634 if (!xsdo->shmPMData.shmPixmap) {
635 xsdo->shmPMData.shmPixmap =
636 X11SD_CreateSharedPixmap(xsdo);
637 }
638 if (xsdo->shmPMData.shmPixmap) {
639 GC xgc = XCreateGC(awt_display, xsdo->shmPMData.shmPixmap, 0L, NULL);
640 if (xgc != NULL) {
641 xsdo->shmPMData.usingShmPixmap = JNI_TRUE;
642 xsdo->drawable = xsdo->shmPMData.shmPixmap;
643 XCopyArea(awt_display,
644 xsdo->shmPMData.pixmap, xsdo->drawable, xgc,
645 0, 0, xsdo->pmWidth, xsdo->pmHeight, 0, 0);
646 XSync(awt_display, False);
647 xsdo->shmPMData.xRequestSent = JNI_FALSE;
648 XFreeGC(awt_display, xgc);
649 }
650 }
651 }
652}
653
654void X11SD_UnPuntPixmap(X11SDOps *xsdo)
655{
656 if (useMitShmPixmaps != CAN_USE_MITSHM || forceSharedPixmaps) {
657 return;
658 }
659 xsdo->shmPMData.pixelsReadSinceBlt = 0;
660 if (xsdo->shmPMData.numBltsSinceRead >=
661 xsdo->shmPMData.numBltsThreshold)
662 {
663 if (xsdo->shmPMData.usingShmPixmap) {
664 if (!xsdo->shmPMData.pixmap) {
665 xsdo->shmPMData.pixmap =
666 XCreatePixmap(awt_display,
667 RootWindow(awt_display,
668 xsdo->configData->awt_visInfo.screen),
669 xsdo->pmWidth, xsdo->pmHeight, xsdo->depth);
670 }
671 if (xsdo->shmPMData.pixmap) {
672 GC xgc = XCreateGC(awt_display, xsdo->shmPMData.pixmap, 0L, NULL);
673 if (xgc != NULL) {
674 xsdo->drawable = xsdo->shmPMData.pixmap;
675 XCopyArea(awt_display,
676 xsdo->shmPMData.shmPixmap, xsdo->drawable, xgc,
677 0, 0, xsdo->pmWidth, xsdo->pmHeight, 0, 0);
678 XSync(awt_display, False);
679 XFreeGC(awt_display, xgc);
680 xsdo->shmPMData.xRequestSent = JNI_FALSE;
681 xsdo->shmPMData.usingShmPixmap = JNI_FALSE;
682 xsdo->shmPMData.numBltsThreshold *= 2;
683 }
684 }
685 }
686 } else {
687 xsdo->shmPMData.numBltsSinceRead++;
688 }
689}
690
691/**
692 * Determines if the cached image can be used for current operation.
693 * If the image is to be used to be read into by XShmGetImage,
694 * it must be close enough to avoid excessive reading from the screen;
695 * otherwise it should just be at least the size requested.
696 */
697jboolean X11SD_CachedXImageFits(jint width, jint height, jint maxWidth,
698 jint maxHeight, jint depth, jboolean readBits)
699{
700 /* we assume here that the cached image exists */
701 jint imgWidth = cachedXImage->width;
702 jint imgHeight = cachedXImage->height;
703
704 if (imgWidth < width || imgHeight < height || depth != cachedXImage->depth) {
705 /* doesn't fit if any of the cached image dimensions is smaller
706 or the depths are different */
707 return JNI_FALSE;
708 }
709
710 if (!readBits) {
711 /* Not reading from this image, so any image at least of the
712 size requested will do */
713 return JNI_TRUE;
714 }
715
716 if ((imgWidth < width + 64) && (imgHeight < height + 64)
717 && imgWidth <= maxWidth && imgHeight <= maxHeight)
718 {
719 /* Cached image's width/height shouldn't be more than 64 pixels
720 * larger than requested, because the region in XShmGetImage
721 * can't be specified and we don't want to read too much.
722 * Furthermore it has to be smaller than maxWidth/Height
723 * so drawables are not read out of bounds.
724 */
725 return JNI_TRUE;
726 }
727
728 return JNI_FALSE;
729}
730#endif /* MITSHM */
731
732jint X11SD_InitWindow(JNIEnv *env, X11SDOps *xsdo)
733{
734 if (xsdo->isPixmap == JNI_TRUE) {
735 return SD_FAILURE;
736 }
737 xsdo->cData = xsdo->configData->color_data;
738
739 return SD_SUCCESS;
740}
741
742static jint X11SD_Lock(JNIEnv *env,
743 SurfaceDataOps *ops,
744 SurfaceDataRasInfo *pRasInfo,
745 jint lockflags)
746{
747 X11SDOps *xsdo = (X11SDOps *) ops;
748 X11RIPrivate *xpriv = (X11RIPrivate *) &(pRasInfo->priv);
749 int ret = SD_SUCCESS;
750
751 AWT_LOCK();
752
753 if (xsdo->invalid) {
754 AWT_UNLOCK();
755 SurfaceData_ThrowInvalidPipeException(env, "bounds changed");
756 return SD_FAILURE;
757 }
758 xsdo->cData = xsdo->configData->color_data;
759 if (xsdo->drawable == 0 && X11SD_InitWindow(env, xsdo) == SD_FAILURE) {
760 AWT_UNLOCK();
761 return SD_FAILURE;
762 }
763 if ((lockflags & SD_LOCK_LUT) != 0 &&
764 (xsdo->cData == NULL ||
765 xsdo->cData->awt_icmLUT == NULL))
766 {
767 AWT_UNLOCK();
768 if (!(*env)->ExceptionCheck(env))
769 {
770 JNU_ThrowNullPointerException(env, "colormap lookup table");
771 }
772 return SD_FAILURE;
773 }
774 if ((lockflags & SD_LOCK_INVCOLOR) != 0 &&
775 (xsdo->cData == NULL ||
776 xsdo->cData->img_clr_tbl == NULL ||
777 xsdo->cData->img_oda_red == NULL ||
778 xsdo->cData->img_oda_green == NULL ||
779 xsdo->cData->img_oda_blue == NULL))
780 {
781 AWT_UNLOCK();
782 if (!(*env)->ExceptionCheck(env))
783 {
784 JNU_ThrowNullPointerException(env, "inverse colormap lookup table");
785 }
786 return SD_FAILURE;
787 }
788 if ((lockflags & SD_LOCK_INVGRAY) != 0 &&
789 (xsdo->cData == NULL ||
790 xsdo->cData->pGrayInverseLutData == NULL))
791 {
792 AWT_UNLOCK();
793 if (!(*env)->ExceptionCheck(env))
794 {
795 JNU_ThrowNullPointerException(env, "inverse gray lookup table");
796 }
797 return SD_FAILURE;
798 }
799 if (lockflags & SD_LOCK_RD_WR) {
800 if (lockflags & SD_LOCK_FASTEST) {
801 ret = SD_SLOWLOCK;
802 }
803 xpriv->lockType = X11SD_LOCK_BY_XIMAGE;
804 if (xsdo->isPixmap) {
805#ifdef MITSHM
806 if (xsdo->shmPMData.usingShmPixmap) {
807 xpriv->lockType = X11SD_LOCK_BY_SHMEM;
808 }
809#endif /* MITSHM */
810 if (pRasInfo->bounds.x1 < 0) {
811 pRasInfo->bounds.x1 = 0;
812 }
813 if (pRasInfo->bounds.y1 < 0) {
814 pRasInfo->bounds.y1 = 0;
815 }
816 if (pRasInfo->bounds.x2 > xsdo->pmWidth) {
817 pRasInfo->bounds.x2 = xsdo->pmWidth;
818 }
819 if (pRasInfo->bounds.y2 > xsdo->pmHeight) {
820 pRasInfo->bounds.y2 = xsdo->pmHeight;
821 }
822 }
823 } else {
824 /* They didn't lock for anything - we won't give them anything */
825 xpriv->lockType = X11SD_LOCK_BY_NULL;
826 }
827 xpriv->lockFlags = lockflags;
828 xpriv->img = NULL;
829
830 return ret;
831 /* AWT_UNLOCK() called in Unlock */
832}
833
834static void X11SD_GetRasInfo(JNIEnv *env,
835 SurfaceDataOps *ops,
836 SurfaceDataRasInfo *pRasInfo)
837{
838 X11SDOps *xsdo = (X11SDOps *) ops;
839 X11RIPrivate *xpriv = (X11RIPrivate *) &(pRasInfo->priv);
840 jint lockFlags = xpriv->lockFlags;
841 jint depth = xsdo->depth;
842 int mult = xsdo->configData->pixelStride;
843
844
845#ifdef MITSHM
846 if (xpriv->lockType == X11SD_LOCK_BY_SHMEM) {
847 if (xsdo->shmPMData.xRequestSent == JNI_TRUE) {
848 /* need to sync before using shared mem pixmap
849 if any x calls were issued for this pixmap */
850 XSync(awt_display, False);
851 xsdo->shmPMData.xRequestSent = JNI_FALSE;
852 }
853 xpriv->x = pRasInfo->bounds.x1;
854 xpriv->y = pRasInfo->bounds.y1;
855 pRasInfo->rasBase = xsdo->shmPMData.shmSegInfo->shmaddr;
856 pRasInfo->pixelStride = mult;
857 pRasInfo->pixelBitOffset = 0;
858 pRasInfo->scanStride = xsdo->shmPMData.bytesPerLine;
859 } else
860#endif /* MITSHM */
861 if (xpriv->lockType == X11SD_LOCK_BY_XIMAGE) {
862 int x, y, w, h;
863 x = pRasInfo->bounds.x1;
864 y = pRasInfo->bounds.y1;
865 w = pRasInfo->bounds.x2 - x;
866 h = pRasInfo->bounds.y2 - y;
867
868 xpriv->img = X11SD_GetImage(env, xsdo, &pRasInfo->bounds, lockFlags);
869 if (xpriv->img) {
870 int scan = xpriv->img->bytes_per_line;
871 xpriv->x = x;
872 xpriv->y = y;
873 pRasInfo->rasBase = xpriv->img->data - x * mult - y * scan;
874 pRasInfo->pixelStride = mult;
875 pRasInfo->pixelBitOffset = 0;
876 pRasInfo->scanStride = scan;
877 } else {
878 pRasInfo->rasBase = NULL;
879 pRasInfo->pixelStride = 0;
880 pRasInfo->pixelBitOffset = 0;
881 pRasInfo->scanStride = 0;
882 }
883 } else {
884 /* They didn't lock for anything - we won't give them anything */
885 pRasInfo->rasBase = NULL;
886 pRasInfo->pixelStride = 0;
887 pRasInfo->pixelBitOffset = 0;
888 pRasInfo->scanStride = 0;
889 }
890 if (lockFlags & SD_LOCK_LUT) {
891 pRasInfo->lutBase = (jint *) xsdo->cData->awt_icmLUT;
892 pRasInfo->lutSize = xsdo->cData->awt_numICMcolors;
893 } else {
894 pRasInfo->lutBase = NULL;
895 pRasInfo->lutSize = 0;
896 }
897 if (lockFlags & SD_LOCK_INVCOLOR) {
898 pRasInfo->invColorTable = xsdo->cData->img_clr_tbl;
899 pRasInfo->redErrTable = xsdo->cData->img_oda_red;
900 pRasInfo->grnErrTable = xsdo->cData->img_oda_green;
901 pRasInfo->bluErrTable = xsdo->cData->img_oda_blue;
902 } else {
903 pRasInfo->invColorTable = NULL;
904 pRasInfo->redErrTable = NULL;
905 pRasInfo->grnErrTable = NULL;
906 pRasInfo->bluErrTable = NULL;
907 }
908 if (lockFlags & SD_LOCK_INVGRAY) {
909 pRasInfo->invGrayTable = xsdo->cData->pGrayInverseLutData;
910 } else {
911 pRasInfo->invGrayTable = NULL;
912 }
913}
914
915static void X11SD_Unlock(JNIEnv *env,
916 SurfaceDataOps *ops,
917 SurfaceDataRasInfo *pRasInfo)
918{
919 X11SDOps *xsdo = (X11SDOps *) ops;
920 X11RIPrivate *xpriv = (X11RIPrivate *) &(pRasInfo->priv);
921
922 if (xpriv->lockType == X11SD_LOCK_BY_XIMAGE &&
923 xpriv->img != NULL)
924 {
925 if (xpriv->lockFlags & SD_LOCK_WRITE) {
926 int x = xpriv->x;
927 int y = xpriv->y;
928 int w = pRasInfo->bounds.x2 - x;
929 int h = pRasInfo->bounds.y2 - y;
930 Drawable drawable = xsdo->drawable;
931 GC xgc = xsdo->cachedGC;
932 if (xgc == NULL) {
933 xsdo->cachedGC = xgc =
934 XCreateGC(awt_display, drawable, 0L, NULL);
935 }
936
937 if (xpriv->img->byte_order != nativeByteOrder) {
938 /* switching bytes back in 24 and 32 bpp cases. */
939 /* For 16 bit XLib will switch for us. */
940 if (xsdo->depth > 16) {
941 X11SD_SwapBytes(xsdo, xpriv->img, xsdo->depth,
942 xsdo->configData->awtImage->wsImageFormat.bits_per_pixel);
943 }
944 }
945
946#ifdef MITSHM
947 if (xpriv->img->obdata != NULL) {
948 XShmPutImage(awt_display, drawable, xgc,
949 xpriv->img, 0, 0, x, y, w, h, False);
950 XFlush(awt_display);
951 } else {
952 XPutImage(awt_display, drawable, xgc,
953 xpriv->img, 0, 0, x, y, w, h);
954 }
955 if (xsdo->shmPMData.usingShmPixmap) {
956 xsdo->shmPMData.xRequestSent = JNI_TRUE;
957 }
958#else
959 XPutImage(awt_display, drawable, xgc,
960 xpriv->img, 0, 0, x, y, w, h);
961#endif /* MITSHM */
962
963 }
964 X11SD_DisposeOrCacheXImage(xpriv->img);
965 xpriv->img = (XImage *)NULL;
966 }
967 /* the background pixel is not valid anymore */
968 if (xpriv->lockFlags & SD_LOCK_WRITE) {
969 xsdo->isBgInitialized = JNI_FALSE;
970 }
971 xpriv->lockType = X11SD_LOCK_UNLOCKED;
972 AWT_UNLOCK();
973}
974
975static int
976X11SD_ClipToRoot(SurfaceDataBounds *b, SurfaceDataBounds *bounds,
977 X11SDOps *xsdo)
978{
979 short x1=0, y1=0, x2=0, y2=0;
980 int tmpx, tmpy;
981 Window tmpchild;
982
983 Window window = (Window)(xsdo->drawable); /* is always a Window */
984 XWindowAttributes winAttr;
985
986 Status status = XGetWindowAttributes(awt_display, window, &winAttr);
987 if (status == 0) {
988 /* Failure, X window no longer valid. */
989 return FALSE;
990 }
991 if (!XTranslateCoordinates(awt_display, window,
992 RootWindowOfScreen(winAttr.screen),
993 0, 0, &tmpx, &tmpy, &tmpchild)) {
994 return FALSE;
995 }
996
997 x1 = -(x1 + tmpx);
998 y1 = -(y1 + tmpy);
999
1000 x2 = x1 + DisplayWidth(awt_display, xsdo->configData->awt_visInfo.screen);
1001 y2 = y1 + DisplayHeight(awt_display, xsdo->configData->awt_visInfo.screen);
1002
1003 x1 = XSD_MAX(bounds->x1, x1);
1004 y1 = XSD_MAX(bounds->y1, y1);
1005 x2 = XSD_MIN(bounds->x2, x2);
1006 y2 = XSD_MIN(bounds->y2, y2);
1007 if ((x1 >= x2) || (y1 >= y2)) {
1008 return FALSE;
1009 }
1010 b->x1 = x1;
1011 b->y1 = y1;
1012 b->x2 = x2;
1013 b->y2 = y2;
1014
1015 return TRUE;
1016}
1017
1018/*
1019 * x1, y1, x2, y2 - our rectangle in the coord system of
1020 * the widget
1021 * px1, xy1, px2, py2 - current parent rect coords in the
1022 * same system
1023 */
1024static int
1025X11SD_FindClip(SurfaceDataBounds *b, SurfaceDataBounds *bounds, X11SDOps *xsdo)
1026{
1027 return TRUE;
1028}
1029
1030static void
1031X11SD_SwapBytes(X11SDOps *xsdo, XImage * img, int depth, int bpp) {
1032 int lengthInBytes = img->height * img->bytes_per_line;
1033 int i;
1034
1035 switch (depth) {
1036 case 12:
1037 case 15:
1038 case 16:
1039 {
1040 /* AB -> BA */
1041 unsigned short *d = (unsigned short *)img->data;
1042 unsigned short t;
1043 for (i = 0; i < lengthInBytes/2; i++) {
1044 t = *d;
1045 *d++ = (t >> 8) | (t << 8);
1046 }
1047 img->byte_order = nativeByteOrder;
1048 img->bitmap_bit_order = nativeByteOrder;
1049 break;
1050 }
1051 case 24:
1052 {
1053 /* ABC -> CBA */
1054 if (bpp == 24) {
1055 // 4517321: Only swap if we have a "real" ThreeByteBgr
1056 // visual (denoted by a red_mask of 0xff). Due to ambiguity
1057 // in the X11 spec, it appears that the swap is not required
1058 // on Linux configurations that use 24 bits per pixel (denoted
1059 // by a red_mask of 0xff0000).
1060 if (xsdo->configData->awt_visInfo.red_mask == 0xff) {
1061 int scan = img->bytes_per_line;
1062 unsigned char *d = (unsigned char *) img->data;
1063 unsigned char *d1;
1064 unsigned int t;
1065 int j;
1066
1067 for (i = 0; i < img->height; i++, d += scan) {
1068 d1 = d;
1069 for (j = 0; j < img->width; j++, d1 += 3) {
1070 /* not obvious opt from XLib src */
1071 t = d1[0]; d1[0] = d1[2]; d1[2] = t;
1072 }
1073 }
1074 }
1075 break;
1076 }
1077 }
1078 /* FALL THROUGH for 32-bit case */
1079 case 32:
1080 {
1081 /* ABCD -> DCBA */
1082 unsigned int *d = (unsigned int *) img->data;
1083 unsigned int t;
1084 for (i = 0; i < lengthInBytes/4; i++) {
1085 t = *d;
1086 *d++ = ((t >> 24) |
1087 ((t >> 8) & 0xff00) |
1088 ((t & 0xff00) << 8) |
1089 (t << 24));
1090 }
1091 break;
1092 }
1093 }
1094}
1095
1096static XImage * X11SD_GetImage(JNIEnv *env, X11SDOps *xsdo,
1097 SurfaceDataBounds *bounds,
1098 jint lockFlags)
1099{
1100 int x, y, w, h, maxWidth, maxHeight;
1101 int scan;
1102 XImage * img = NULL;
1103 Drawable drawable;
1104 int depth = xsdo->depth;
1105 int mult = xsdo->configData->pixelStride;
1106 int pad = (mult == 3) ? 32 : mult * 8; // pad must be 8, 16, or 32
1107 jboolean readBits = lockFlags & SD_LOCK_NEED_PIXELS;
1108
1109 x = bounds->x1;
1110 y = bounds->y1;
1111 w = bounds->x2 - x;
1112 h = bounds->y2 - y;
1113
1114#ifdef MITSHM
1115 if (useMitShmExt == CAN_USE_MITSHM) {
1116 if (xsdo->isPixmap) {
1117 if (readBits) {
1118 X11SD_PuntPixmap(xsdo, w, h);
1119 }
1120 maxWidth = xsdo->pmWidth;
1121 maxHeight = xsdo->pmHeight;
1122 } else {
1123 XWindowAttributes winAttr;
1124 if (XGetWindowAttributes(awt_display,
1125 (Window) xsdo->drawable, &winAttr) != 0) {
1126 maxWidth = winAttr.width;
1127 maxHeight = winAttr.height;
1128 } else {
1129 /* XGWA failed which isn't a good thing. Defaulting to using
1130 * x,y means that after the subtraction of these we will use
1131 * w=0, h=0 which is a reasonable default on such a failure.
1132 */
1133 maxWidth = x;
1134 maxHeight = y;
1135 }
1136 }
1137 maxWidth -= x;
1138 maxHeight -= y;
1139
1140 img = X11SD_GetSharedImage(xsdo, w, h, maxWidth, maxHeight, readBits);
1141 }
1142#endif /* MITSHM */
1143 drawable = xsdo->drawable;
1144
1145 if (readBits) {
1146#ifdef MITSHM
1147 if (img != NULL) {
1148 if (!XShmGetImage(awt_display, drawable, img, x, y, -1)) {
1149 X11SD_DisposeOrCacheXImage(img);
1150 img = NULL;
1151 }
1152 }
1153 if (img == NULL) {
1154 img = XGetImage(awt_display, drawable, x, y, w, h, -1, ZPixmap);
1155 if (img != NULL) {
1156 img->obdata = NULL;
1157 }
1158 }
1159#else
1160 img = XGetImage(awt_display, drawable, x, y, w, h, -1, ZPixmap);
1161#endif /* MITSHM */
1162 if (img == NULL) {
1163 SurfaceDataBounds temp;
1164 img = XCreateImage(awt_display,
1165 xsdo->configData->awt_visInfo.visual,
1166 depth, ZPixmap, 0, NULL, w, h, pad, 0);
1167 if (img == NULL) {
1168 return NULL;
1169 }
1170
1171 scan = img->bytes_per_line;
1172 img->data = malloc(h * scan);
1173 if (img->data == NULL) {
1174 XFree(img);
1175 return NULL;
1176 }
1177
1178 if (xsdo->isPixmap == JNI_FALSE &&
1179 X11SD_ClipToRoot(&temp, bounds, xsdo)) {
1180
1181 XImage * temp_image;
1182 temp_image = XGetImage(awt_display, drawable,
1183 temp.x1, temp.y1,
1184 temp.x2 - temp.x1,
1185 temp.y2 - temp.y1,
1186 -1, ZPixmap);
1187 if (temp_image == NULL) {
1188 XGrabServer(awt_display);
1189 if (X11SD_FindClip(&temp, bounds, xsdo)) {
1190 temp_image =
1191 XGetImage(awt_display, drawable,
1192 temp.x1, temp.y1,
1193 temp.x2 - temp.x1,
1194 temp.y2 - temp.y1,
1195 -1, ZPixmap);
1196 }
1197 XUngrabServer(awt_display);
1198 /* Workaround for bug 5039226 */
1199 XSync(awt_display, False);
1200 }
1201 if (temp_image != NULL) {
1202 int temp_scan, bytes_to_copy;
1203 char * img_addr, * temp_addr;
1204 int i;
1205
1206 img_addr = img->data +
1207 (temp.y1 - y) * scan + (temp.x1 - x) * mult;
1208 temp_scan = temp_image->bytes_per_line;
1209 temp_addr = temp_image->data;
1210 bytes_to_copy = (temp.x2 - temp.x1) * mult;
1211 for (i = temp.y1; i < temp.y2; i++) {
1212 memcpy(img_addr, temp_addr, bytes_to_copy);
1213 img_addr += scan;
1214 temp_addr += temp_scan;
1215 }
1216 XDestroyImage(temp_image);
1217 }
1218 }
1219 img->obdata = NULL;
1220 }
1221 if (depth > 8 && img->byte_order != nativeByteOrder) {
1222 X11SD_SwapBytes(xsdo, img, depth,
1223 xsdo->configData->awtImage->wsImageFormat.bits_per_pixel);
1224 }
1225 } else {
1226 /*
1227 * REMIND: This might be better to move to the Lock function
1228 * to avoid lengthy I/O pauses inside what may be a critical
1229 * section. This will be more critical when SD_LOCK_READ is
1230 * implemented. Another solution is to cache the pixels
1231 * to avoid reading for every operation.
1232 */
1233 if (img == NULL) {
1234 img = XCreateImage(awt_display,
1235 xsdo->configData->awt_visInfo.visual,
1236 depth, ZPixmap, 0, NULL, w, h, pad, 0);
1237 if (img == NULL) {
1238 return NULL;
1239 }
1240
1241 img->data = malloc(h * img->bytes_per_line);
1242 if (img->data == NULL) {
1243 XFree(img);
1244 return NULL;
1245 }
1246
1247 img->obdata = NULL;
1248
1249 if (img->byte_order != nativeByteOrder &&
1250 (depth == 15 || depth == 16 || depth == 12)) {
1251 /* bytes will be swapped by XLib. */
1252 img->byte_order = nativeByteOrder;
1253 img->bitmap_bit_order = nativeByteOrder;
1254 }
1255 }
1256 }
1257 return img;
1258}
1259
1260void X11SD_DisposeOrCacheXImage(XImage * image) {
1261 /* REMIND: might want to check if the new image worth caching. */
1262 /* Cache only shared images. Passed image is assumed to be non-null. */
1263 if (image->obdata != NULL) {
1264 if (cachedXImage != NULL) {
1265 X11SD_DisposeXImage(cachedXImage);
1266 }
1267 cachedXImage = image;
1268 } else {
1269 X11SD_DisposeXImage(image);
1270 }
1271}
1272
1273void X11SD_DisposeXImage(XImage * image) {
1274 if (image != NULL) {
1275#ifdef MITSHM
1276 if (image->obdata != NULL) {
1277 X11SD_DropSharedSegment((XShmSegmentInfo*)image->obdata);
1278 image->obdata = NULL;
1279 }
1280#endif /* MITSHM */
1281 XDestroyImage(image);
1282 }
1283}
1284
1285void
1286X11SD_DirectRenderNotify(JNIEnv *env, X11SDOps *xsdo)
1287{
1288#ifdef MITSHM
1289 if (xsdo->shmPMData.usingShmPixmap) {
1290 xsdo->shmPMData.xRequestSent = JNI_TRUE;
1291 }
1292#endif /* MITSHM */
1293 awt_output_flush();
1294}
1295
1296/*
1297 * Sets transparent pixels in the pixmap to
1298 * the specified solid background color and returns it.
1299 * Doesn't update source pixmap unless the color of the
1300 * transparent pixels is different from the specified color.
1301 *
1302 * Note: The AWT lock must be held by the current thread
1303 * while calling into this method.
1304 */
1305static Drawable
1306X11SD_GetPixmapWithBg(JNIEnv *env, X11SDOps *xsdo, jint pixel)
1307{
1308 /* assert AWT_CHECK_HAVE_LOCK(); */
1309
1310 if (xsdo->invalid) {
1311 AWT_UNLOCK();
1312 SurfaceData_ThrowInvalidPipeException(env, "bounds changed");
1313 return 0;
1314 }
1315
1316 /* the image doesn't have transparency, just return it */
1317 if (xsdo->bitmask == 0) {
1318 /* don't need to unlock here, the caller will unlock through
1319 the release call */
1320 return xsdo->drawable;
1321 }
1322
1323 /* Check if current color of the transparent pixels is different
1324 from the specified one */
1325 if (xsdo->isBgInitialized == JNI_FALSE || xsdo->bgPixel != pixel) {
1326 GC srcGC;
1327 GC bmGC;
1328
1329 if (xsdo->drawable == 0) {
1330 AWT_UNLOCK();
1331 return 0;
1332 }
1333
1334 bmGC = XCreateGC(awt_display, xsdo->bitmask, 0, NULL);
1335 if (bmGC == NULL) {
1336 AWT_UNLOCK();
1337 return 0;
1338 }
1339
1340 /* invert the bitmask */
1341 XSetFunction(awt_display, bmGC, GXxor);
1342 XSetForeground(awt_display, bmGC, 1);
1343 XFillRectangle(awt_display, xsdo->bitmask, bmGC,
1344 0, 0, xsdo->pmWidth, xsdo->pmHeight);
1345
1346 srcGC = XCreateGC(awt_display, xsdo->drawable, 0L, NULL);
1347 if (srcGC == NULL) {
1348 XFreeGC(awt_display, bmGC);
1349 AWT_UNLOCK();
1350 return 0;
1351 }
1352
1353 /* set transparent pixels in the source pm to the bg color */
1354 XSetClipMask(awt_display, srcGC, xsdo->bitmask);
1355 XSetForeground(awt_display, srcGC, pixel);
1356 XFillRectangle(awt_display, xsdo->drawable, srcGC,
1357 0, 0, xsdo->pmWidth, xsdo->pmHeight);
1358
1359 /* invert the mask back */
1360 XFillRectangle(awt_display, xsdo->bitmask, bmGC,
1361 0, 0, xsdo->pmWidth, xsdo->pmHeight);
1362
1363 XFreeGC(awt_display, bmGC);
1364 XFreeGC(awt_display, srcGC);
1365 xsdo->bgPixel = pixel;
1366 xsdo->isBgInitialized = JNI_TRUE;
1367 }
1368
1369 return xsdo->drawable;
1370}
1371
1372static void
1373X11SD_ReleasePixmapWithBg(JNIEnv *env, X11SDOps *xsdo)
1374{
1375#ifdef MITSHM
1376 if (xsdo->shmPMData.usingShmPixmap) {
1377 xsdo->shmPMData.xRequestSent = JNI_TRUE;
1378 }
1379#endif /* MITSHM */
1380}
1381
1382#endif /* !HEADLESS */
1383
1384/*
1385 * Class: sun_java2d_x11_X11SurfaceData
1386 * Method: XCreateGC
1387 * Signature: (I)J
1388 */
1389JNIEXPORT jlong JNICALL
1390Java_sun_java2d_x11_XSurfaceData_XCreateGC
1391 (JNIEnv *env, jclass xsd, jlong pXSData)
1392{
1393 jlong ret;
1394
1395#ifndef HEADLESS
1396 X11SDOps *xsdo;
1397
1398 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XCreateGC");
1399
1400 xsdo = (X11SDOps *) pXSData;
1401 if (xsdo == NULL) {
1402 return 0L;
1403 }
1404
1405 xsdo->javaGC = XCreateGC(awt_display, xsdo->drawable, 0, NULL);
1406 ret = (jlong) xsdo->javaGC;
1407#else /* !HEADLESS */
1408 ret = 0L;
1409#endif /* !HEADLESS */
1410
1411 return ret;
1412}
1413
1414/*
1415 * Class: sun_java2d_x11_X11SurfaceData
1416 * Method: XResetClip
1417 * Signature: (JIIIILsun/java2d/pipe/Region;)V
1418 */
1419JNIEXPORT void JNICALL
1420Java_sun_java2d_x11_XSurfaceData_XResetClip
1421 (JNIEnv *env, jclass xsd, jlong xgc)
1422{
1423#ifndef HEADLESS
1424 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XResetClip");
1425 XSetClipMask(awt_display, (GC) xgc, None);
1426#endif /* !HEADLESS */
1427}
1428
1429/*
1430 * Class: sun_java2d_x11_X11SurfaceData
1431 * Method: XSetClip
1432 * Signature: (JIIIILsun/java2d/pipe/Region;)V
1433 */
1434JNIEXPORT void JNICALL
1435Java_sun_java2d_x11_XSurfaceData_XSetClip
1436 (JNIEnv *env, jclass xsd, jlong xgc,
1437 jint x1, jint y1, jint x2, jint y2,
1438 jobject complexclip)
1439{
1440#ifndef HEADLESS
1441 int numrects;
1442 XRectangle rects[256];
1443 XRectangle *pRect = rects;
1444
1445 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetClip");
1446
1447 numrects = RegionToYXBandedRectangles(env,
1448 x1, y1, x2, y2, complexclip,
1449 &pRect, 256);
1450
1451 XSetClipRectangles(awt_display, (GC) xgc, 0, 0, pRect, numrects, YXBanded);
1452
1453 if (pRect != rects) {
1454 free(pRect);
1455 }
1456#endif /* !HEADLESS */
1457}
1458
1459/*
1460 * Class: sun_java2d_x11_X11SurfaceData
1461 * Method: XSetCopyMode
1462 * Signature: (J)V
1463 */
1464JNIEXPORT void JNICALL
1465Java_sun_java2d_x11_X11SurfaceData_XSetCopyMode
1466 (JNIEnv *env, jclass xsd, jlong xgc)
1467{
1468#ifndef HEADLESS
1469 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetCopyMode");
1470 XSetFunction(awt_display, (GC) xgc, GXcopy);
1471#endif /* !HEADLESS */
1472}
1473
1474/*
1475 * Class: sun_java2d_x11_X11SurfaceData
1476 * Method: XSetXorMode
1477 * Signature: (J)V
1478 */
1479JNIEXPORT void JNICALL
1480Java_sun_java2d_x11_X11SurfaceData_XSetXorMode
1481 (JNIEnv *env, jclass xr, jlong xgc)
1482{
1483#ifndef HEADLESS
1484 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetXorMode");
1485 XSetFunction(awt_display, (GC) xgc, GXxor);
1486#endif /* !HEADLESS */
1487}
1488
1489/*
1490 * Class: sun_java2d_x11_X11SurfaceData
1491 * Method: XSetForeground
1492 * Signature: (JI)V
1493 */
1494JNIEXPORT void JNICALL
1495Java_sun_java2d_x11_X11SurfaceData_XSetForeground
1496 (JNIEnv *env, jclass xsd, jlong xgc, jint pixel)
1497{
1498#ifndef HEADLESS
1499 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetForeground");
1500 XSetForeground(awt_display, (GC) xgc, pixel);
1501#endif /* !HEADLESS */
1502}
1503
1504/*
1505 * Class: sun_java2d_x11_X11SurfaceData
1506 * Method: XSetGraphicsExposures
1507 * Signature: (JZ)V
1508 */
1509JNIEXPORT void JNICALL
1510Java_sun_java2d_x11_XSurfaceData_XSetGraphicsExposures
1511 (JNIEnv *env, jclass xsd, jlong xgc, jboolean needExposures)
1512{
1513#ifndef HEADLESS
1514 J2dTraceLn(J2D_TRACE_INFO, "in X11SurfaceData_XSetGraphicsExposures");
1515 XSetGraphicsExposures(awt_display, (GC) xgc, needExposures ? True : False);
1516#endif /* !HEADLESS */
1517}
1518