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a09e091a JB |
1 | /****************************************************************************** |
2 | * | |
3 | * Copyright (c) 1994, 1995 Hewlett-Packard Company | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining | |
6 | * a copy of this software and associated documentation files (the | |
7 | * "Software"), to deal in the Software without restriction, including | |
8 | * without limitation the rights to use, copy, modify, merge, publish, | |
9 | * distribute, sublicense, and/or sell copies of the Software, and to | |
10 | * permit persons to whom the Software is furnished to do so, subject to | |
11 | * the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included | |
14 | * in all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
19 | * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM, | |
20 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
21 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR | |
22 | * THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Except as contained in this notice, the name of the Hewlett-Packard | |
25 | * Company shall not be used in advertising or otherwise to promote the | |
26 | * sale, use or other dealings in this Software without prior written | |
27 | * authorization from the Hewlett-Packard Company. | |
28 | * | |
29 | * DIX DBE code | |
30 | * | |
31 | *****************************************************************************/ | |
32 | ||
33 | /* INCLUDES */ | |
34 | ||
35 | #ifdef HAVE_DIX_CONFIG_H | |
36 | #include <dix-config.h> | |
37 | #endif | |
38 | ||
39 | #include <string.h> | |
40 | #include <stdint.h> | |
41 | #include <X11/X.h> | |
42 | #include <X11/Xproto.h> | |
43 | #include "scrnintstr.h" | |
44 | #include "extnsionst.h" | |
45 | #include "extinit.h" | |
46 | #include "gcstruct.h" | |
47 | #include "dixstruct.h" | |
48 | #define NEED_DBE_PROTOCOL | |
49 | #include "dbestruct.h" | |
50 | #include "midbe.h" | |
51 | #include "xace.h" | |
52 | ||
53 | /* GLOBALS */ | |
54 | ||
55 | /* These are globals for use by DDX */ | |
56 | DevPrivateKeyRec dbeScreenPrivKeyRec; | |
57 | DevPrivateKeyRec dbeWindowPrivKeyRec; | |
58 | ||
59 | /* These are globals for use by DDX */ | |
60 | RESTYPE dbeDrawableResType; | |
61 | RESTYPE dbeWindowPrivResType; | |
62 | ||
63 | /* Used to generate DBE's BadBuffer error. */ | |
64 | static int dbeErrorBase; | |
65 | ||
66 | /****************************************************************************** | |
67 | * | |
68 | * DBE DIX Procedure: DbeStubScreen | |
69 | * | |
70 | * Description: | |
71 | * | |
72 | * This is function stubs the function pointers in the given DBE screen | |
73 | * private and increments the number of stubbed screens. | |
74 | * | |
75 | *****************************************************************************/ | |
76 | ||
77 | static void | |
78 | DbeStubScreen(DbeScreenPrivPtr pDbeScreenPriv, int *nStubbedScreens) | |
79 | { | |
80 | /* Stub DIX. */ | |
81 | pDbeScreenPriv->SetupBackgroundPainter = NULL; | |
82 | ||
83 | /* Do not unwrap PositionWindow nor DestroyWindow. If the DDX | |
84 | * initialization function failed, we assume that it did not wrap | |
85 | * PositionWindow. Also, DestroyWindow is only wrapped if the DDX | |
86 | * initialization function succeeded. | |
87 | */ | |
88 | ||
89 | /* Stub DDX. */ | |
90 | pDbeScreenPriv->GetVisualInfo = NULL; | |
91 | pDbeScreenPriv->AllocBackBufferName = NULL; | |
92 | pDbeScreenPriv->SwapBuffers = NULL; | |
93 | pDbeScreenPriv->WinPrivDelete = NULL; | |
94 | ||
95 | (*nStubbedScreens)++; | |
96 | ||
97 | } /* DbeStubScreen() */ | |
98 | \f | |
99 | /****************************************************************************** | |
100 | * | |
101 | * DBE DIX Procedure: ProcDbeGetVersion | |
102 | * | |
103 | * Description: | |
104 | * | |
105 | * This function is for processing a DbeGetVersion request. | |
106 | * This request returns the major and minor version numbers of this | |
107 | * extension. | |
108 | * | |
109 | * Return Values: | |
110 | * | |
111 | * Success | |
112 | * | |
113 | *****************************************************************************/ | |
114 | ||
115 | static int | |
116 | ProcDbeGetVersion(ClientPtr client) | |
117 | { | |
118 | /* REQUEST(xDbeGetVersionReq); */ | |
119 | xDbeGetVersionReply rep = { | |
120 | .type = X_Reply, | |
121 | .sequenceNumber = client->sequence, | |
122 | .length = 0, | |
123 | .majorVersion = DBE_MAJOR_VERSION, | |
124 | .minorVersion = DBE_MINOR_VERSION | |
125 | }; | |
126 | ||
127 | REQUEST_SIZE_MATCH(xDbeGetVersionReq); | |
128 | ||
129 | if (client->swapped) { | |
130 | swaps(&rep.sequenceNumber); | |
131 | } | |
132 | ||
133 | WriteToClient(client, sizeof(xDbeGetVersionReply), &rep); | |
134 | ||
135 | return Success; | |
136 | ||
137 | } /* ProcDbeGetVersion() */ | |
138 | \f | |
139 | /****************************************************************************** | |
140 | * | |
141 | * DBE DIX Procedure: ProcDbeAllocateBackBufferName | |
142 | * | |
143 | * Description: | |
144 | * | |
145 | * This function is for processing a DbeAllocateBackBufferName request. | |
146 | * This request allocates a drawable ID used to refer to the back buffer | |
147 | * of a window. | |
148 | * | |
149 | * Return Values: | |
150 | * | |
151 | * BadAlloc - server can not allocate resources | |
152 | * BadIDChoice - id is out of range for client; id is already in use | |
153 | * BadMatch - window is not an InputOutput window; | |
154 | * visual of window is not on list returned by | |
155 | * DBEGetVisualInfo; | |
156 | * BadValue - invalid swap action is specified | |
157 | * BadWindow - window is not a valid window | |
158 | * Success | |
159 | * | |
160 | *****************************************************************************/ | |
161 | ||
162 | static int | |
163 | ProcDbeAllocateBackBufferName(ClientPtr client) | |
164 | { | |
165 | REQUEST(xDbeAllocateBackBufferNameReq); | |
166 | WindowPtr pWin; | |
167 | DbeScreenPrivPtr pDbeScreenPriv; | |
168 | DbeWindowPrivPtr pDbeWindowPriv; | |
169 | XdbeScreenVisualInfo scrVisInfo; | |
170 | register int i; | |
171 | Bool visualMatched = FALSE; | |
172 | xDbeSwapAction swapAction; | |
173 | VisualID visual; | |
174 | int status; | |
175 | int add_index; | |
176 | ||
177 | REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq); | |
178 | ||
179 | /* The window must be valid. */ | |
180 | status = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess); | |
181 | if (status != Success) | |
182 | return status; | |
183 | ||
184 | /* The window must be InputOutput. */ | |
185 | if (pWin->drawable.class != InputOutput) { | |
186 | return BadMatch; | |
187 | } | |
188 | ||
189 | /* The swap action must be valid. */ | |
190 | swapAction = stuff->swapAction; /* use local var for performance. */ | |
191 | if ((swapAction != XdbeUndefined) && | |
192 | (swapAction != XdbeBackground) && | |
193 | (swapAction != XdbeUntouched) && (swapAction != XdbeCopied)) { | |
194 | return BadValue; | |
195 | } | |
196 | ||
197 | /* The id must be in range and not already in use. */ | |
198 | LEGAL_NEW_RESOURCE(stuff->buffer, client); | |
199 | ||
200 | /* The visual of the window must be in the list returned by | |
201 | * GetVisualInfo. | |
202 | */ | |
203 | pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(pWin); | |
204 | if (!pDbeScreenPriv->GetVisualInfo) | |
205 | return BadMatch; /* screen doesn't support double buffering */ | |
206 | ||
207 | if (!(*pDbeScreenPriv->GetVisualInfo) (pWin->drawable.pScreen, &scrVisInfo)) { | |
208 | /* GetVisualInfo() failed to allocate visual info data. */ | |
209 | return BadAlloc; | |
210 | } | |
211 | ||
212 | /* See if the window's visual is on the list. */ | |
213 | visual = wVisual(pWin); | |
214 | for (i = 0; (i < scrVisInfo.count) && !visualMatched; i++) { | |
215 | if (scrVisInfo.visinfo[i].visual == visual) { | |
216 | visualMatched = TRUE; | |
217 | } | |
218 | } | |
219 | ||
220 | /* Free what was allocated by the GetVisualInfo() call above. */ | |
221 | free(scrVisInfo.visinfo); | |
222 | ||
223 | if (!visualMatched) { | |
224 | return BadMatch; | |
225 | } | |
226 | ||
227 | if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)) == NULL) { | |
228 | /* There is no buffer associated with the window. | |
229 | * Allocate a window priv. | |
230 | */ | |
231 | ||
232 | pDbeWindowPriv = calloc(1, sizeof(DbeWindowPrivRec)); | |
233 | if (!pDbeWindowPriv) | |
234 | return BadAlloc; | |
235 | ||
236 | /* Fill out window priv information. */ | |
237 | pDbeWindowPriv->pWindow = pWin; | |
238 | pDbeWindowPriv->width = pWin->drawable.width; | |
239 | pDbeWindowPriv->height = pWin->drawable.height; | |
240 | pDbeWindowPriv->x = pWin->drawable.x; | |
241 | pDbeWindowPriv->y = pWin->drawable.y; | |
242 | pDbeWindowPriv->nBufferIDs = 0; | |
243 | ||
244 | /* Set the buffer ID array pointer to the initial (static) array). */ | |
245 | pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs; | |
246 | ||
247 | /* Initialize the buffer ID list. */ | |
248 | pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS; | |
249 | pDbeWindowPriv->IDs[0] = stuff->buffer; | |
250 | ||
251 | add_index = 0; | |
252 | for (i = 0; i < DBE_INIT_MAX_IDS; i++) { | |
253 | pDbeWindowPriv->IDs[i] = DBE_FREE_ID_ELEMENT; | |
254 | } | |
255 | ||
256 | /* Actually connect the window priv to the window. */ | |
257 | dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, pDbeWindowPriv); | |
258 | ||
259 | } /* if -- There is no buffer associated with the window. */ | |
260 | ||
261 | else { | |
262 | /* A buffer is already associated with the window. | |
263 | * Add the new buffer ID to the array, reallocating the array memory | |
264 | * if necessary. | |
265 | */ | |
266 | ||
267 | /* Determine if there is a free element in the ID array. */ | |
268 | for (i = 0; i < pDbeWindowPriv->maxAvailableIDs; i++) { | |
269 | if (pDbeWindowPriv->IDs[i] == DBE_FREE_ID_ELEMENT) { | |
270 | /* There is still room in the ID array. */ | |
271 | break; | |
272 | } | |
273 | } | |
274 | ||
275 | if (i == pDbeWindowPriv->maxAvailableIDs) { | |
276 | /* No more room in the ID array -- reallocate another array. */ | |
277 | XID *pIDs; | |
278 | ||
279 | /* Setup an array pointer for the realloc operation below. */ | |
280 | if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS) { | |
281 | /* We will malloc a new array. */ | |
282 | pIDs = NULL; | |
283 | } | |
284 | else { | |
285 | /* We will realloc a new array. */ | |
286 | pIDs = pDbeWindowPriv->IDs; | |
287 | } | |
288 | ||
289 | /* malloc/realloc a new array and initialize all elements to 0. */ | |
290 | pDbeWindowPriv->IDs = (XID *) realloc(pIDs, | |
291 | (pDbeWindowPriv-> | |
292 | maxAvailableIDs + | |
293 | DBE_INCR_MAX_IDS) * | |
294 | sizeof(XID)); | |
295 | if (!pDbeWindowPriv->IDs) { | |
296 | return BadAlloc; | |
297 | } | |
298 | memset(&pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs], 0, | |
299 | (pDbeWindowPriv->maxAvailableIDs + DBE_INCR_MAX_IDS - | |
300 | pDbeWindowPriv->nBufferIDs) * sizeof(XID)); | |
301 | ||
302 | if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS) { | |
303 | /* We just went from using the initial (static) array to a | |
304 | * newly allocated array. Copy the IDs from the initial array | |
305 | * to the new array. | |
306 | */ | |
307 | memcpy(pDbeWindowPriv->IDs, pDbeWindowPriv->initIDs, | |
308 | DBE_INIT_MAX_IDS * sizeof(XID)); | |
309 | } | |
310 | ||
311 | pDbeWindowPriv->maxAvailableIDs += DBE_INCR_MAX_IDS; | |
312 | } | |
313 | ||
314 | add_index = i; | |
315 | ||
316 | } /* else -- A buffer is already associated with the window. */ | |
317 | ||
318 | /* Call the DDX routine to allocate the back buffer. */ | |
319 | status = (*pDbeScreenPriv->AllocBackBufferName) (pWin, stuff->buffer, | |
320 | stuff->swapAction); | |
321 | ||
322 | if (status == Success) { | |
323 | pDbeWindowPriv->IDs[add_index] = stuff->buffer; | |
324 | if (!AddResource(stuff->buffer, dbeWindowPrivResType, | |
325 | (pointer) pDbeWindowPriv)) { | |
326 | pDbeWindowPriv->IDs[add_index] = DBE_FREE_ID_ELEMENT; | |
327 | ||
328 | if (pDbeWindowPriv->nBufferIDs == 0) { | |
329 | status = BadAlloc; | |
330 | goto out_free; | |
331 | } | |
332 | } | |
333 | } | |
334 | else { | |
335 | /* The DDX buffer allocation routine failed for the first buffer of | |
336 | * this window. | |
337 | */ | |
338 | if (pDbeWindowPriv->nBufferIDs == 0) { | |
339 | goto out_free; | |
340 | } | |
341 | } | |
342 | ||
343 | /* Increment the number of buffers (XIDs) associated with this window. */ | |
344 | pDbeWindowPriv->nBufferIDs++; | |
345 | ||
346 | /* Set swap action on all calls. */ | |
347 | pDbeWindowPriv->swapAction = stuff->swapAction; | |
348 | ||
349 | return status; | |
350 | ||
351 | out_free: | |
352 | dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, NULL); | |
353 | free(pDbeWindowPriv); | |
354 | return status; | |
355 | ||
356 | } /* ProcDbeAllocateBackBufferName() */ | |
357 | \f | |
358 | /****************************************************************************** | |
359 | * | |
360 | * DBE DIX Procedure: ProcDbeDeallocateBackBufferName | |
361 | * | |
362 | * Description: | |
363 | * | |
364 | * This function is for processing a DbeDeallocateBackBufferName request. | |
365 | * This request frees a drawable ID that was obtained by a | |
366 | * DbeAllocateBackBufferName request. | |
367 | * | |
368 | * Return Values: | |
369 | * | |
370 | * BadBuffer - buffer to deallocate is not associated with a window | |
371 | * Success | |
372 | * | |
373 | *****************************************************************************/ | |
374 | ||
375 | static int | |
376 | ProcDbeDeallocateBackBufferName(ClientPtr client) | |
377 | { | |
378 | REQUEST(xDbeDeallocateBackBufferNameReq); | |
379 | DbeWindowPrivPtr pDbeWindowPriv; | |
380 | int rc, i; | |
381 | pointer val; | |
382 | ||
383 | REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq); | |
384 | ||
385 | /* Buffer name must be valid */ | |
386 | rc = dixLookupResourceByType((pointer *) &pDbeWindowPriv, stuff->buffer, | |
387 | dbeWindowPrivResType, client, | |
388 | DixDestroyAccess); | |
389 | if (rc != Success) | |
390 | return rc; | |
391 | ||
392 | rc = dixLookupResourceByType(&val, stuff->buffer, dbeDrawableResType, | |
393 | client, DixDestroyAccess); | |
394 | if (rc != Success) | |
395 | return rc; | |
396 | ||
397 | /* Make sure that the id is valid for the window. | |
398 | * This is paranoid code since we already looked up the ID by type | |
399 | * above. | |
400 | */ | |
401 | ||
402 | for (i = 0; i < pDbeWindowPriv->nBufferIDs; i++) { | |
403 | /* Loop through the ID list to find the ID. */ | |
404 | if (pDbeWindowPriv->IDs[i] == stuff->buffer) { | |
405 | break; | |
406 | } | |
407 | } | |
408 | ||
409 | if (i == pDbeWindowPriv->nBufferIDs) { | |
410 | /* We did not find the ID in the ID list. */ | |
411 | client->errorValue = stuff->buffer; | |
412 | return dbeErrorBase + DbeBadBuffer; | |
413 | } | |
414 | ||
415 | FreeResource(stuff->buffer, RT_NONE); | |
416 | ||
417 | return Success; | |
418 | ||
419 | } /* ProcDbeDeallocateBackBufferName() */ | |
420 | \f | |
421 | /****************************************************************************** | |
422 | * | |
423 | * DBE DIX Procedure: ProcDbeSwapBuffers | |
424 | * | |
425 | * Description: | |
426 | * | |
427 | * This function is for processing a DbeSwapBuffers request. | |
428 | * This request swaps the buffers for all windows listed, applying the | |
429 | * appropriate swap action for each window. | |
430 | * | |
431 | * Return Values: | |
432 | * | |
433 | * BadAlloc - local allocation failed; this return value is not defined | |
434 | * by the protocol | |
435 | * BadMatch - a window in request is not double-buffered; a window in | |
436 | * request is listed more than once | |
437 | * BadValue - invalid swap action is specified; no swap action is | |
438 | * specified | |
439 | * BadWindow - a window in request is not valid | |
440 | * Success | |
441 | * | |
442 | *****************************************************************************/ | |
443 | ||
444 | static int | |
445 | ProcDbeSwapBuffers(ClientPtr client) | |
446 | { | |
447 | REQUEST(xDbeSwapBuffersReq); | |
448 | WindowPtr pWin; | |
449 | DbeScreenPrivPtr pDbeScreenPriv; | |
450 | DbeSwapInfoPtr swapInfo; | |
451 | xDbeSwapInfo *dbeSwapInfo; | |
452 | int error; | |
453 | register int i, j; | |
454 | int nStuff; | |
455 | ||
456 | REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq); | |
457 | nStuff = stuff->n; /* use local variable for performance. */ | |
458 | ||
459 | if (nStuff == 0) { | |
460 | return Success; | |
461 | } | |
462 | ||
463 | if (nStuff > UINT32_MAX / sizeof(DbeSwapInfoRec)) | |
464 | return BadAlloc; | |
465 | ||
466 | /* Get to the swap info appended to the end of the request. */ | |
467 | dbeSwapInfo = (xDbeSwapInfo *) &stuff[1]; | |
468 | ||
469 | /* Allocate array to record swap information. */ | |
470 | swapInfo = (DbeSwapInfoPtr) malloc(nStuff * sizeof(DbeSwapInfoRec)); | |
471 | if (swapInfo == NULL) { | |
472 | return BadAlloc; | |
473 | } | |
474 | ||
475 | for (i = 0; i < nStuff; i++) { | |
476 | /* Check all windows to swap. */ | |
477 | ||
478 | /* Each window must be a valid window - BadWindow. */ | |
479 | error = dixLookupWindow(&pWin, dbeSwapInfo[i].window, client, | |
480 | DixWriteAccess); | |
481 | if (error != Success) { | |
482 | free(swapInfo); | |
483 | return error; | |
484 | } | |
485 | ||
486 | /* Each window must be double-buffered - BadMatch. */ | |
487 | if (DBE_WINDOW_PRIV(pWin) == NULL) { | |
488 | free(swapInfo); | |
489 | return BadMatch; | |
490 | } | |
491 | ||
492 | /* Each window must only be specified once - BadMatch. */ | |
493 | for (j = i + 1; j < nStuff; j++) { | |
494 | if (dbeSwapInfo[i].window == dbeSwapInfo[j].window) { | |
495 | free(swapInfo); | |
496 | return BadMatch; | |
497 | } | |
498 | } | |
499 | ||
500 | /* Each swap action must be valid - BadValue. */ | |
501 | if ((dbeSwapInfo[i].swapAction != XdbeUndefined) && | |
502 | (dbeSwapInfo[i].swapAction != XdbeBackground) && | |
503 | (dbeSwapInfo[i].swapAction != XdbeUntouched) && | |
504 | (dbeSwapInfo[i].swapAction != XdbeCopied)) { | |
505 | free(swapInfo); | |
506 | return BadValue; | |
507 | } | |
508 | ||
509 | /* Everything checks out OK. Fill in the swap info array. */ | |
510 | swapInfo[i].pWindow = pWin; | |
511 | swapInfo[i].swapAction = dbeSwapInfo[i].swapAction; | |
512 | ||
513 | } /* for (i = 0; i < nStuff; i++) */ | |
514 | ||
515 | /* Call the DDX routine to perform the swap(s). The DDX routine should | |
516 | * scan the swap list (swap info), swap any buffers that it knows how to | |
517 | * handle, delete them from the list, and update nStuff to indicate how | |
518 | * many windows it did not handle. | |
519 | * | |
520 | * This scheme allows a range of sophistication in the DDX SwapBuffers() | |
521 | * implementation. Naive implementations could just swap the first buffer | |
522 | * in the list, move the last buffer to the front, decrement nStuff, and | |
523 | * return. The next level of sophistication could be to scan the whole | |
524 | * list for windows on the same screen. Up another level, the DDX routine | |
525 | * could deal with cross-screen synchronization. | |
526 | */ | |
527 | ||
528 | while (nStuff > 0) { | |
529 | pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(swapInfo[0].pWindow); | |
530 | error = (*pDbeScreenPriv->SwapBuffers) (client, &nStuff, swapInfo); | |
531 | if (error != Success) { | |
532 | free(swapInfo); | |
533 | return error; | |
534 | } | |
535 | } | |
536 | ||
537 | free(swapInfo); | |
538 | return Success; | |
539 | ||
540 | } /* ProcDbeSwapBuffers() */ | |
541 | \f | |
542 | /****************************************************************************** | |
543 | * | |
544 | * DBE DIX Procedure: ProcDbeGetVisualInfo | |
545 | * | |
546 | * Description: | |
547 | * | |
548 | * This function is for processing a ProcDbeGetVisualInfo request. | |
549 | * This request returns information about which visuals support | |
550 | * double buffering. | |
551 | * | |
552 | * Return Values: | |
553 | * | |
554 | * BadDrawable - value in screen specifiers is not a valid drawable | |
555 | * Success | |
556 | * | |
557 | *****************************************************************************/ | |
558 | ||
559 | static int | |
560 | ProcDbeGetVisualInfo(ClientPtr client) | |
561 | { | |
562 | REQUEST(xDbeGetVisualInfoReq); | |
563 | DbeScreenPrivPtr pDbeScreenPriv; | |
564 | xDbeGetVisualInfoReply rep; | |
565 | Drawable *drawables; | |
566 | DrawablePtr *pDrawables = NULL; | |
567 | register int i, j, rc; | |
568 | register int count; /* number of visual infos in reply */ | |
569 | register int length; /* length of reply */ | |
570 | ScreenPtr pScreen; | |
571 | XdbeScreenVisualInfo *pScrVisInfo; | |
572 | ||
573 | REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq); | |
574 | ||
575 | if (stuff->n > UINT32_MAX / sizeof(DrawablePtr)) | |
576 | return BadAlloc; | |
577 | /* Make sure any specified drawables are valid. */ | |
578 | if (stuff->n != 0) { | |
579 | if (!(pDrawables = (DrawablePtr *) malloc(stuff->n * | |
580 | sizeof(DrawablePtr)))) { | |
581 | return BadAlloc; | |
582 | } | |
583 | ||
584 | drawables = (Drawable *) &stuff[1]; | |
585 | ||
586 | for (i = 0; i < stuff->n; i++) { | |
587 | rc = dixLookupDrawable(pDrawables + i, drawables[i], client, 0, | |
588 | DixGetAttrAccess); | |
589 | if (rc != Success) { | |
590 | free(pDrawables); | |
591 | return rc; | |
592 | } | |
593 | } | |
594 | } | |
595 | ||
596 | count = (stuff->n == 0) ? screenInfo.numScreens : stuff->n; | |
597 | if (!(pScrVisInfo = calloc(count, sizeof(XdbeScreenVisualInfo)))) { | |
598 | free(pDrawables); | |
599 | ||
600 | return BadAlloc; | |
601 | } | |
602 | ||
603 | length = 0; | |
604 | ||
605 | for (i = 0; i < count; i++) { | |
606 | pScreen = (stuff->n == 0) ? screenInfo.screens[i] : | |
607 | pDrawables[i]->pScreen; | |
608 | pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen); | |
609 | ||
610 | rc = XaceHook(XACE_SCREEN_ACCESS, client, pScreen, DixGetAttrAccess); | |
611 | if (rc != Success) | |
612 | goto freeScrVisInfo; | |
613 | ||
614 | if (!(*pDbeScreenPriv->GetVisualInfo) (pScreen, &pScrVisInfo[i])) { | |
615 | /* We failed to alloc pScrVisInfo[i].visinfo. */ | |
616 | rc = BadAlloc; | |
617 | ||
618 | /* Free visinfos that we allocated for previous screen infos. */ | |
619 | goto freeScrVisInfo; | |
620 | } | |
621 | ||
622 | /* Account for n, number of xDbeVisInfo items in list. */ | |
623 | length += sizeof(CARD32); | |
624 | ||
625 | /* Account for n xDbeVisInfo items */ | |
626 | length += pScrVisInfo[i].count * sizeof(xDbeVisInfo); | |
627 | } | |
628 | ||
629 | rep = (xDbeGetVisualInfoReply) { | |
630 | .type = X_Reply, | |
631 | .sequenceNumber = client->sequence, | |
632 | .length = bytes_to_int32(length), | |
633 | .m = count | |
634 | }; | |
635 | ||
636 | if (client->swapped) { | |
637 | swaps(&rep.sequenceNumber); | |
638 | swapl(&rep.length); | |
639 | swapl(&rep.m); | |
640 | } | |
641 | ||
642 | /* Send off reply. */ | |
643 | WriteToClient(client, sizeof(xDbeGetVisualInfoReply), &rep); | |
644 | ||
645 | for (i = 0; i < count; i++) { | |
646 | CARD32 data32; | |
647 | ||
648 | /* For each screen in the reply, send off the visual info */ | |
649 | ||
650 | /* Send off number of visuals. */ | |
651 | data32 = (CARD32) pScrVisInfo[i].count; | |
652 | ||
653 | if (client->swapped) { | |
654 | swapl(&data32); | |
655 | } | |
656 | ||
657 | WriteToClient(client, sizeof(CARD32), &data32); | |
658 | ||
659 | /* Now send off visual info items. */ | |
660 | for (j = 0; j < pScrVisInfo[i].count; j++) { | |
661 | xDbeVisInfo visInfo; | |
662 | ||
663 | /* Copy the data in the client data structure to a protocol | |
664 | * data structure. We will send data to the client from the | |
665 | * protocol data structure. | |
666 | */ | |
667 | ||
668 | visInfo.visualID = (CARD32) pScrVisInfo[i].visinfo[j].visual; | |
669 | visInfo.depth = (CARD8) pScrVisInfo[i].visinfo[j].depth; | |
670 | visInfo.perfLevel = (CARD8) pScrVisInfo[i].visinfo[j].perflevel; | |
671 | ||
672 | if (client->swapped) { | |
673 | swapl(&visInfo.visualID); | |
674 | ||
675 | /* We do not need to swap depth and perfLevel since they are | |
676 | * already 1 byte quantities. | |
677 | */ | |
678 | } | |
679 | ||
680 | /* Write visualID(32), depth(8), perfLevel(8), and pad(16). */ | |
681 | WriteToClient(client, 2 * sizeof(CARD32), &visInfo.visualID); | |
682 | } | |
683 | } | |
684 | ||
685 | rc = Success; | |
686 | ||
687 | freeScrVisInfo: | |
688 | /* Clean up memory. */ | |
689 | for (i = 0; i < count; i++) { | |
690 | free(pScrVisInfo[i].visinfo); | |
691 | } | |
692 | free(pScrVisInfo); | |
693 | ||
694 | free(pDrawables); | |
695 | ||
696 | return rc; | |
697 | ||
698 | } /* ProcDbeGetVisualInfo() */ | |
699 | \f | |
700 | /****************************************************************************** | |
701 | * | |
702 | * DBE DIX Procedure: ProcDbeGetbackBufferAttributes | |
703 | * | |
704 | * Description: | |
705 | * | |
706 | * This function is for processing a ProcDbeGetbackBufferAttributes | |
707 | * request. This request returns information about a back buffer. | |
708 | * | |
709 | * Return Values: | |
710 | * | |
711 | * Success | |
712 | * | |
713 | *****************************************************************************/ | |
714 | ||
715 | static int | |
716 | ProcDbeGetBackBufferAttributes(ClientPtr client) | |
717 | { | |
718 | REQUEST(xDbeGetBackBufferAttributesReq); | |
719 | xDbeGetBackBufferAttributesReply rep = { | |
720 | .type = X_Reply, | |
721 | .sequenceNumber = client->sequence, | |
722 | .length = 0 | |
723 | }; | |
724 | DbeWindowPrivPtr pDbeWindowPriv; | |
725 | int rc; | |
726 | ||
727 | REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq); | |
728 | ||
729 | rc = dixLookupResourceByType((pointer *) &pDbeWindowPriv, stuff->buffer, | |
730 | dbeWindowPrivResType, client, | |
731 | DixGetAttrAccess); | |
732 | if (rc == Success) { | |
733 | rep.attributes = pDbeWindowPriv->pWindow->drawable.id; | |
734 | } | |
735 | else { | |
736 | rep.attributes = None; | |
737 | } | |
738 | ||
739 | if (client->swapped) { | |
740 | swaps(&rep.sequenceNumber); | |
741 | swapl(&rep.length); | |
742 | swapl(&rep.attributes); | |
743 | } | |
744 | ||
745 | WriteToClient(client, sizeof(xDbeGetBackBufferAttributesReply), &rep); | |
746 | return Success; | |
747 | ||
748 | } /* ProcDbeGetbackBufferAttributes() */ | |
749 | \f | |
750 | /****************************************************************************** | |
751 | * | |
752 | * DBE DIX Procedure: ProcDbeDispatch | |
753 | * | |
754 | * Description: | |
755 | * | |
756 | * This function dispatches DBE requests. | |
757 | * | |
758 | *****************************************************************************/ | |
759 | ||
760 | static int | |
761 | ProcDbeDispatch(ClientPtr client) | |
762 | { | |
763 | REQUEST(xReq); | |
764 | ||
765 | switch (stuff->data) { | |
766 | case X_DbeGetVersion: | |
767 | return (ProcDbeGetVersion(client)); | |
768 | ||
769 | case X_DbeAllocateBackBufferName: | |
770 | return (ProcDbeAllocateBackBufferName(client)); | |
771 | ||
772 | case X_DbeDeallocateBackBufferName: | |
773 | return (ProcDbeDeallocateBackBufferName(client)); | |
774 | ||
775 | case X_DbeSwapBuffers: | |
776 | return (ProcDbeSwapBuffers(client)); | |
777 | ||
778 | case X_DbeBeginIdiom: | |
779 | return Success; | |
780 | ||
781 | case X_DbeEndIdiom: | |
782 | return Success; | |
783 | ||
784 | case X_DbeGetVisualInfo: | |
785 | return (ProcDbeGetVisualInfo(client)); | |
786 | ||
787 | case X_DbeGetBackBufferAttributes: | |
788 | return (ProcDbeGetBackBufferAttributes(client)); | |
789 | ||
790 | default: | |
791 | return BadRequest; | |
792 | } | |
793 | ||
794 | } /* ProcDbeDispatch() */ | |
795 | \f | |
796 | /****************************************************************************** | |
797 | * | |
798 | * DBE DIX Procedure: SProcDbeGetVersion | |
799 | * | |
800 | * Description: | |
801 | * | |
802 | * This function is for processing a DbeGetVersion request on a swapped | |
803 | * server. This request returns the major and minor version numbers of | |
804 | * this extension. | |
805 | * | |
806 | * Return Values: | |
807 | * | |
808 | * Success | |
809 | * | |
810 | *****************************************************************************/ | |
811 | ||
812 | static int | |
813 | SProcDbeGetVersion(ClientPtr client) | |
814 | { | |
815 | REQUEST(xDbeGetVersionReq); | |
816 | ||
817 | swaps(&stuff->length); | |
818 | return (ProcDbeGetVersion(client)); | |
819 | ||
820 | } /* SProcDbeGetVersion() */ | |
821 | \f | |
822 | /****************************************************************************** | |
823 | * | |
824 | * DBE DIX Procedure: SProcDbeAllocateBackBufferName | |
825 | * | |
826 | * Description: | |
827 | * | |
828 | * This function is for processing a DbeAllocateBackBufferName request on | |
829 | * a swapped server. This request allocates a drawable ID used to refer | |
830 | * to the back buffer of a window. | |
831 | * | |
832 | * Return Values: | |
833 | * | |
834 | * BadAlloc - server can not allocate resources | |
835 | * BadIDChoice - id is out of range for client; id is already in use | |
836 | * BadMatch - window is not an InputOutput window; | |
837 | * visual of window is not on list returned by | |
838 | * DBEGetVisualInfo; | |
839 | * BadValue - invalid swap action is specified | |
840 | * BadWindow - window is not a valid window | |
841 | * Success | |
842 | * | |
843 | *****************************************************************************/ | |
844 | ||
845 | static int | |
846 | SProcDbeAllocateBackBufferName(ClientPtr client) | |
847 | { | |
848 | REQUEST(xDbeAllocateBackBufferNameReq); | |
849 | ||
850 | swaps(&stuff->length); | |
851 | REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq); | |
852 | ||
853 | swapl(&stuff->window); | |
854 | swapl(&stuff->buffer); | |
855 | /* stuff->swapAction is a byte. We do not need to swap this field. */ | |
856 | ||
857 | return (ProcDbeAllocateBackBufferName(client)); | |
858 | ||
859 | } /* SProcDbeAllocateBackBufferName() */ | |
860 | \f | |
861 | /****************************************************************************** | |
862 | * | |
863 | * DBE DIX Procedure: SProcDbeDeallocateBackBufferName | |
864 | * | |
865 | * Description: | |
866 | * | |
867 | * This function is for processing a DbeDeallocateBackBufferName request | |
868 | * on a swapped server. This request frees a drawable ID that was | |
869 | * obtained by a DbeAllocateBackBufferName request. | |
870 | * | |
871 | * Return Values: | |
872 | * | |
873 | * BadBuffer - buffer to deallocate is not associated with a window | |
874 | * Success | |
875 | * | |
876 | *****************************************************************************/ | |
877 | ||
878 | static int | |
879 | SProcDbeDeallocateBackBufferName(ClientPtr client) | |
880 | { | |
881 | REQUEST(xDbeDeallocateBackBufferNameReq); | |
882 | ||
883 | swaps(&stuff->length); | |
884 | REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq); | |
885 | ||
886 | swapl(&stuff->buffer); | |
887 | ||
888 | return (ProcDbeDeallocateBackBufferName(client)); | |
889 | ||
890 | } /* SProcDbeDeallocateBackBufferName() */ | |
891 | \f | |
892 | /****************************************************************************** | |
893 | * | |
894 | * DBE DIX Procedure: SProcDbeSwapBuffers | |
895 | * | |
896 | * Description: | |
897 | * | |
898 | * This function is for processing a DbeSwapBuffers request on a swapped | |
899 | * server. This request swaps the buffers for all windows listed, | |
900 | * applying the appropriate swap action for each window. | |
901 | * | |
902 | * Return Values: | |
903 | * | |
904 | * BadMatch - a window in request is not double-buffered; a window in | |
905 | * request is listed more than once; all windows in request do | |
906 | * not have the same root | |
907 | * BadValue - invalid swap action is specified | |
908 | * BadWindow - a window in request is not valid | |
909 | * Success | |
910 | * | |
911 | *****************************************************************************/ | |
912 | ||
913 | static int | |
914 | SProcDbeSwapBuffers(ClientPtr client) | |
915 | { | |
916 | REQUEST(xDbeSwapBuffersReq); | |
917 | register int i; | |
918 | xDbeSwapInfo *pSwapInfo; | |
919 | ||
920 | swaps(&stuff->length); | |
921 | REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq); | |
922 | ||
923 | swapl(&stuff->n); | |
924 | ||
925 | if (stuff->n != 0) { | |
926 | pSwapInfo = (xDbeSwapInfo *) stuff + 1; | |
927 | ||
928 | /* The swap info following the fix part of this request is a window(32) | |
929 | * followed by a 1 byte swap action and then 3 pad bytes. We only need | |
930 | * to swap the window information. | |
931 | */ | |
932 | for (i = 0; i < stuff->n; i++) { | |
933 | swapl(&pSwapInfo->window); | |
934 | } | |
935 | } | |
936 | ||
937 | return (ProcDbeSwapBuffers(client)); | |
938 | ||
939 | } /* SProcDbeSwapBuffers() */ | |
940 | \f | |
941 | /****************************************************************************** | |
942 | * | |
943 | * DBE DIX Procedure: SProcDbeGetVisualInfo | |
944 | * | |
945 | * Description: | |
946 | * | |
947 | * This function is for processing a ProcDbeGetVisualInfo request on a | |
948 | * swapped server. This request returns information about which visuals | |
949 | * support double buffering. | |
950 | * | |
951 | * Return Values: | |
952 | * | |
953 | * BadDrawable - value in screen specifiers is not a valid drawable | |
954 | * Success | |
955 | * | |
956 | *****************************************************************************/ | |
957 | ||
958 | static int | |
959 | SProcDbeGetVisualInfo(ClientPtr client) | |
960 | { | |
961 | REQUEST(xDbeGetVisualInfoReq); | |
962 | ||
963 | swaps(&stuff->length); | |
964 | REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq); | |
965 | ||
966 | swapl(&stuff->n); | |
967 | SwapRestL(stuff); | |
968 | ||
969 | return (ProcDbeGetVisualInfo(client)); | |
970 | ||
971 | } /* SProcDbeGetVisualInfo() */ | |
972 | \f | |
973 | /****************************************************************************** | |
974 | * | |
975 | * DBE DIX Procedure: SProcDbeGetbackBufferAttributes | |
976 | * | |
977 | * Description: | |
978 | * | |
979 | * This function is for processing a ProcDbeGetbackBufferAttributes | |
980 | * request on a swapped server. This request returns information about a | |
981 | * back buffer. | |
982 | * | |
983 | * Return Values: | |
984 | * | |
985 | * Success | |
986 | * | |
987 | *****************************************************************************/ | |
988 | ||
989 | static int | |
990 | SProcDbeGetBackBufferAttributes(ClientPtr client) | |
991 | { | |
992 | REQUEST(xDbeGetBackBufferAttributesReq); | |
993 | ||
994 | swaps(&stuff->length); | |
995 | REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq); | |
996 | ||
997 | swapl(&stuff->buffer); | |
998 | ||
999 | return (ProcDbeGetBackBufferAttributes(client)); | |
1000 | ||
1001 | } /* SProcDbeGetBackBufferAttributes() */ | |
1002 | \f | |
1003 | /****************************************************************************** | |
1004 | * | |
1005 | * DBE DIX Procedure: SProcDbeDispatch | |
1006 | * | |
1007 | * Description: | |
1008 | * | |
1009 | * This function dispatches DBE requests on a swapped server. | |
1010 | * | |
1011 | *****************************************************************************/ | |
1012 | ||
1013 | static int | |
1014 | SProcDbeDispatch(ClientPtr client) | |
1015 | { | |
1016 | REQUEST(xReq); | |
1017 | ||
1018 | switch (stuff->data) { | |
1019 | case X_DbeGetVersion: | |
1020 | return (SProcDbeGetVersion(client)); | |
1021 | ||
1022 | case X_DbeAllocateBackBufferName: | |
1023 | return (SProcDbeAllocateBackBufferName(client)); | |
1024 | ||
1025 | case X_DbeDeallocateBackBufferName: | |
1026 | return (SProcDbeDeallocateBackBufferName(client)); | |
1027 | ||
1028 | case X_DbeSwapBuffers: | |
1029 | return (SProcDbeSwapBuffers(client)); | |
1030 | ||
1031 | case X_DbeBeginIdiom: | |
1032 | return Success; | |
1033 | ||
1034 | case X_DbeEndIdiom: | |
1035 | return Success; | |
1036 | ||
1037 | case X_DbeGetVisualInfo: | |
1038 | return (SProcDbeGetVisualInfo(client)); | |
1039 | ||
1040 | case X_DbeGetBackBufferAttributes: | |
1041 | return (SProcDbeGetBackBufferAttributes(client)); | |
1042 | ||
1043 | default: | |
1044 | return BadRequest; | |
1045 | } | |
1046 | ||
1047 | } /* SProcDbeDispatch() */ | |
1048 | \f | |
1049 | /****************************************************************************** | |
1050 | * | |
1051 | * DBE DIX Procedure: DbeSetupBackgroundPainter | |
1052 | * | |
1053 | * Description: | |
1054 | * | |
1055 | * This function sets up pGC to clear pixmaps. | |
1056 | * | |
1057 | * Return Values: | |
1058 | * | |
1059 | * TRUE - setup was successful | |
1060 | * FALSE - the window's background state is NONE | |
1061 | * | |
1062 | *****************************************************************************/ | |
1063 | ||
1064 | static Bool | |
1065 | DbeSetupBackgroundPainter(WindowPtr pWin, GCPtr pGC) | |
1066 | { | |
1067 | ChangeGCVal gcvalues[4]; | |
1068 | int ts_x_origin, ts_y_origin; | |
1069 | PixUnion background; | |
1070 | int backgroundState; | |
1071 | Mask gcmask; | |
1072 | ||
1073 | /* First take care of any ParentRelative stuff by altering the | |
1074 | * tile/stipple origin to match the coordinates of the upper-left | |
1075 | * corner of the first ancestor without a ParentRelative background. | |
1076 | * This coordinate is, of course, negative. | |
1077 | */ | |
1078 | ts_x_origin = ts_y_origin = 0; | |
1079 | while (pWin->backgroundState == ParentRelative) { | |
1080 | ts_x_origin -= pWin->origin.x; | |
1081 | ts_y_origin -= pWin->origin.y; | |
1082 | ||
1083 | pWin = pWin->parent; | |
1084 | } | |
1085 | backgroundState = pWin->backgroundState; | |
1086 | background = pWin->background; | |
1087 | ||
1088 | switch (backgroundState) { | |
1089 | case BackgroundPixel: | |
1090 | gcvalues[0].val = background.pixel; | |
1091 | gcvalues[1].val = FillSolid; | |
1092 | gcmask = GCForeground | GCFillStyle; | |
1093 | break; | |
1094 | ||
1095 | case BackgroundPixmap: | |
1096 | gcvalues[0].val = FillTiled; | |
1097 | gcvalues[1].ptr = background.pixmap; | |
1098 | gcvalues[2].val = ts_x_origin; | |
1099 | gcvalues[3].val = ts_y_origin; | |
1100 | gcmask = GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin; | |
1101 | break; | |
1102 | ||
1103 | default: | |
1104 | /* pWin->backgroundState == None */ | |
1105 | return FALSE; | |
1106 | } | |
1107 | ||
1108 | return ChangeGC(NullClient, pGC, gcmask, gcvalues) == 0; | |
1109 | } /* DbeSetupBackgroundPainter() */ | |
1110 | \f | |
1111 | /****************************************************************************** | |
1112 | * | |
1113 | * DBE DIX Procedure: DbeDrawableDelete | |
1114 | * | |
1115 | * Description: | |
1116 | * | |
1117 | * This is the resource delete function for dbeDrawableResType. | |
1118 | * It is registered when the drawable resource type is created in | |
1119 | * DbeExtensionInit(). | |
1120 | * | |
1121 | * To make resource deletion simple, we do not do anything in this function | |
1122 | * and leave all resource deleteion to DbeWindowPrivDelete(), which will | |
1123 | * eventually be called or already has been called. Deletion functions are | |
1124 | * not guaranteed to be called in any particular order. | |
1125 | * | |
1126 | *****************************************************************************/ | |
1127 | static int | |
1128 | DbeDrawableDelete(pointer pDrawable, XID id) | |
1129 | { | |
1130 | return Success; | |
1131 | ||
1132 | } /* DbeDrawableDelete() */ | |
1133 | \f | |
1134 | /****************************************************************************** | |
1135 | * | |
1136 | * DBE DIX Procedure: DbeWindowPrivDelete | |
1137 | * | |
1138 | * Description: | |
1139 | * | |
1140 | * This is the resource delete function for dbeWindowPrivResType. | |
1141 | * It is registered when the drawable resource type is created in | |
1142 | * DbeExtensionInit(). | |
1143 | * | |
1144 | *****************************************************************************/ | |
1145 | static int | |
1146 | DbeWindowPrivDelete(pointer pDbeWinPriv, XID id) | |
1147 | { | |
1148 | DbeScreenPrivPtr pDbeScreenPriv; | |
1149 | DbeWindowPrivPtr pDbeWindowPriv = (DbeWindowPrivPtr) pDbeWinPriv; | |
1150 | int i; | |
1151 | ||
1152 | /* | |
1153 | ************************************************************************** | |
1154 | ** Remove the buffer ID from the ID array. | |
1155 | ************************************************************************** | |
1156 | */ | |
1157 | ||
1158 | /* Find the ID in the ID array. */ | |
1159 | i = 0; | |
1160 | while ((i < pDbeWindowPriv->nBufferIDs) && (pDbeWindowPriv->IDs[i] != id)) { | |
1161 | i++; | |
1162 | } | |
1163 | ||
1164 | if (i == pDbeWindowPriv->nBufferIDs) { | |
1165 | /* We did not find the ID in the array. We should never get here. */ | |
1166 | return BadValue; | |
1167 | } | |
1168 | ||
1169 | /* Remove the ID from the array. */ | |
1170 | ||
1171 | if (i < (pDbeWindowPriv->nBufferIDs - 1)) { | |
1172 | /* Compress the buffer ID array, overwriting the ID in the process. */ | |
1173 | memmove(&pDbeWindowPriv->IDs[i], &pDbeWindowPriv->IDs[i + 1], | |
1174 | (pDbeWindowPriv->nBufferIDs - i - 1) * sizeof(XID)); | |
1175 | } | |
1176 | else { | |
1177 | /* We are removing the last ID in the array, in which case, the | |
1178 | * assignement below is all that we need to do. | |
1179 | */ | |
1180 | } | |
1181 | pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs - 1] = DBE_FREE_ID_ELEMENT; | |
1182 | ||
1183 | pDbeWindowPriv->nBufferIDs--; | |
1184 | ||
1185 | /* If an extended array was allocated, then check to see if the remaining | |
1186 | * buffer IDs will fit in the static array. | |
1187 | */ | |
1188 | ||
1189 | if ((pDbeWindowPriv->maxAvailableIDs > DBE_INIT_MAX_IDS) && | |
1190 | (pDbeWindowPriv->nBufferIDs == DBE_INIT_MAX_IDS)) { | |
1191 | /* Copy the IDs back into the static array. */ | |
1192 | memcpy(pDbeWindowPriv->initIDs, pDbeWindowPriv->IDs, | |
1193 | DBE_INIT_MAX_IDS * sizeof(XID)); | |
1194 | ||
1195 | /* Free the extended array; use the static array. */ | |
1196 | free(pDbeWindowPriv->IDs); | |
1197 | pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs; | |
1198 | pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS; | |
1199 | } | |
1200 | ||
1201 | /* | |
1202 | ************************************************************************** | |
1203 | ** Perform DDX level tasks. | |
1204 | ************************************************************************** | |
1205 | */ | |
1206 | ||
1207 | pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW_PRIV((DbeWindowPrivPtr) | |
1208 | pDbeWindowPriv); | |
1209 | (*pDbeScreenPriv->WinPrivDelete) ((DbeWindowPrivPtr) pDbeWindowPriv, id); | |
1210 | ||
1211 | /* | |
1212 | ************************************************************************** | |
1213 | ** Perform miscellaneous tasks if this is the last buffer associated | |
1214 | ** with the window. | |
1215 | ************************************************************************** | |
1216 | */ | |
1217 | ||
1218 | if (pDbeWindowPriv->nBufferIDs == 0) { | |
1219 | /* Reset the DBE window priv pointer. */ | |
1220 | dixSetPrivate(&pDbeWindowPriv->pWindow->devPrivates, dbeWindowPrivKey, | |
1221 | NULL); | |
1222 | ||
1223 | /* We are done with the window priv. */ | |
1224 | free(pDbeWindowPriv); | |
1225 | } | |
1226 | ||
1227 | return Success; | |
1228 | ||
1229 | } /* DbeWindowPrivDelete() */ | |
1230 | \f | |
1231 | /****************************************************************************** | |
1232 | * | |
1233 | * DBE DIX Procedure: DbeResetProc | |
1234 | * | |
1235 | * Description: | |
1236 | * | |
1237 | * This routine is called at the end of every server generation. | |
1238 | * It deallocates any memory reserved for the extension and performs any | |
1239 | * other tasks related to shutting down the extension. | |
1240 | * | |
1241 | *****************************************************************************/ | |
1242 | static void | |
1243 | DbeResetProc(ExtensionEntry * extEntry) | |
1244 | { | |
1245 | int i; | |
1246 | ScreenPtr pScreen; | |
1247 | DbeScreenPrivPtr pDbeScreenPriv; | |
1248 | ||
1249 | for (i = 0; i < screenInfo.numScreens; i++) { | |
1250 | pScreen = screenInfo.screens[i]; | |
1251 | pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen); | |
1252 | ||
1253 | if (pDbeScreenPriv) { | |
1254 | /* Unwrap DestroyWindow, which was wrapped in DbeExtensionInit(). */ | |
1255 | pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow; | |
1256 | pScreen->PositionWindow = pDbeScreenPriv->PositionWindow; | |
1257 | free(pDbeScreenPriv); | |
1258 | } | |
1259 | } | |
1260 | } /* DbeResetProc() */ | |
1261 | \f | |
1262 | /****************************************************************************** | |
1263 | * | |
1264 | * DBE DIX Procedure: DbeDestroyWindow | |
1265 | * | |
1266 | * Description: | |
1267 | * | |
1268 | * This is the wrapper for pScreen->DestroyWindow. | |
1269 | * This function frees buffer resources for a window before it is | |
1270 | * destroyed. | |
1271 | * | |
1272 | *****************************************************************************/ | |
1273 | ||
1274 | static Bool | |
1275 | DbeDestroyWindow(WindowPtr pWin) | |
1276 | { | |
1277 | DbeScreenPrivPtr pDbeScreenPriv; | |
1278 | DbeWindowPrivPtr pDbeWindowPriv; | |
1279 | ScreenPtr pScreen; | |
1280 | Bool ret; | |
1281 | ||
1282 | /* | |
1283 | ************************************************************************** | |
1284 | ** 1. Unwrap the member routine. | |
1285 | ************************************************************************** | |
1286 | */ | |
1287 | ||
1288 | pScreen = pWin->drawable.pScreen; | |
1289 | pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen); | |
1290 | pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow; | |
1291 | ||
1292 | /* | |
1293 | ************************************************************************** | |
1294 | ** 2. Do any work necessary before the member routine is called. | |
1295 | ** | |
1296 | ** Call the window priv delete function for all buffer IDs associated | |
1297 | ** with this window. | |
1298 | ************************************************************************** | |
1299 | */ | |
1300 | ||
1301 | if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin))) { | |
1302 | while (pDbeWindowPriv) { | |
1303 | /* *DbeWinPrivDelete() will free the window private and set it to | |
1304 | * NULL if there are no more buffer IDs associated with this | |
1305 | * window. | |
1306 | */ | |
1307 | FreeResource(pDbeWindowPriv->IDs[0], RT_NONE); | |
1308 | pDbeWindowPriv = DBE_WINDOW_PRIV(pWin); | |
1309 | } | |
1310 | } | |
1311 | ||
1312 | /* | |
1313 | ************************************************************************** | |
1314 | ** 3. Call the member routine, saving its result if necessary. | |
1315 | ************************************************************************** | |
1316 | */ | |
1317 | ||
1318 | ret = (*pScreen->DestroyWindow) (pWin); | |
1319 | ||
1320 | /* | |
1321 | ************************************************************************** | |
1322 | ** 4. Rewrap the member routine, restoring the wrapper value first in case | |
1323 | ** the wrapper (or something that it wrapped) change this value. | |
1324 | ************************************************************************** | |
1325 | */ | |
1326 | ||
1327 | pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow; | |
1328 | pScreen->DestroyWindow = DbeDestroyWindow; | |
1329 | ||
1330 | /* | |
1331 | ************************************************************************** | |
1332 | ** 5. Do any work necessary after the member routine has been called. | |
1333 | ** | |
1334 | ** In this case we do not need to do anything. | |
1335 | ************************************************************************** | |
1336 | */ | |
1337 | ||
1338 | return ret; | |
1339 | ||
1340 | } /* DbeDestroyWindow() */ | |
1341 | \f | |
1342 | /****************************************************************************** | |
1343 | * | |
1344 | * DBE DIX Procedure: DbeExtensionInit | |
1345 | * | |
1346 | * Description: | |
1347 | * | |
1348 | * Called from InitExtensions in main() | |
1349 | * | |
1350 | *****************************************************************************/ | |
1351 | ||
1352 | void | |
1353 | DbeExtensionInit(void) | |
1354 | { | |
1355 | ExtensionEntry *extEntry; | |
1356 | register int i, j; | |
1357 | ScreenPtr pScreen = NULL; | |
1358 | DbeScreenPrivPtr pDbeScreenPriv; | |
1359 | int nStubbedScreens = 0; | |
1360 | Bool ddxInitSuccess; | |
1361 | ||
1362 | #ifdef PANORAMIX | |
1363 | if (!noPanoramiXExtension) | |
1364 | return; | |
1365 | #endif | |
1366 | ||
1367 | /* Create the resource types. */ | |
1368 | dbeDrawableResType = | |
1369 | CreateNewResourceType(DbeDrawableDelete, "dbeDrawable"); | |
1370 | if (!dbeDrawableResType) | |
1371 | return; | |
1372 | dbeDrawableResType |= RC_DRAWABLE; | |
1373 | ||
1374 | dbeWindowPrivResType = | |
1375 | CreateNewResourceType(DbeWindowPrivDelete, "dbeWindow"); | |
1376 | if (!dbeWindowPrivResType) | |
1377 | return; | |
1378 | ||
1379 | if (!dixRegisterPrivateKey(&dbeScreenPrivKeyRec, PRIVATE_SCREEN, 0)) | |
1380 | return; | |
1381 | ||
1382 | if (!dixRegisterPrivateKey(&dbeWindowPrivKeyRec, PRIVATE_WINDOW, 0)) | |
1383 | return; | |
1384 | ||
1385 | for (i = 0; i < screenInfo.numScreens; i++) { | |
1386 | /* For each screen, set up DBE screen privates and init DIX and DDX | |
1387 | * interface. | |
1388 | */ | |
1389 | ||
1390 | pScreen = screenInfo.screens[i]; | |
1391 | ||
1392 | if (!(pDbeScreenPriv = malloc(sizeof(DbeScreenPrivRec)))) { | |
1393 | /* If we can not alloc a window or screen private, | |
1394 | * then free any privates that we already alloc'ed and return | |
1395 | */ | |
1396 | ||
1397 | for (j = 0; j < i; j++) { | |
1398 | free(dixLookupPrivate(&screenInfo.screens[j]->devPrivates, | |
1399 | dbeScreenPrivKey)); | |
1400 | dixSetPrivate(&screenInfo.screens[j]->devPrivates, | |
1401 | dbeScreenPrivKey, NULL); | |
1402 | } | |
1403 | return; | |
1404 | } | |
1405 | ||
1406 | dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, pDbeScreenPriv); | |
1407 | ||
1408 | { | |
1409 | /* We don't have DDX support for DBE anymore */ | |
1410 | ||
1411 | #ifndef DISABLE_MI_DBE_BY_DEFAULT | |
1412 | /* Setup DIX. */ | |
1413 | pDbeScreenPriv->SetupBackgroundPainter = DbeSetupBackgroundPainter; | |
1414 | ||
1415 | /* Setup DDX. */ | |
1416 | ddxInitSuccess = miDbeInit(pScreen, pDbeScreenPriv); | |
1417 | ||
1418 | /* DDX DBE initialization may have the side affect of | |
1419 | * reallocating pDbeScreenPriv, so we need to update it. | |
1420 | */ | |
1421 | pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen); | |
1422 | ||
1423 | if (ddxInitSuccess) { | |
1424 | /* Wrap DestroyWindow. The DDX initialization function | |
1425 | * already wrapped PositionWindow for us. | |
1426 | */ | |
1427 | ||
1428 | pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow; | |
1429 | pScreen->DestroyWindow = DbeDestroyWindow; | |
1430 | } | |
1431 | else { | |
1432 | /* DDX initialization failed. Stub the screen. */ | |
1433 | DbeStubScreen(pDbeScreenPriv, &nStubbedScreens); | |
1434 | } | |
1435 | #else | |
1436 | DbeStubScreen(pDbeScreenPriv, &nStubbedScreens); | |
1437 | #endif | |
1438 | ||
1439 | } | |
1440 | ||
1441 | } /* for (i = 0; i < screenInfo.numScreens; i++) */ | |
1442 | ||
1443 | if (nStubbedScreens == screenInfo.numScreens) { | |
1444 | /* All screens stubbed. Clean up and return. */ | |
1445 | ||
1446 | for (i = 0; i < screenInfo.numScreens; i++) { | |
1447 | free(dixLookupPrivate(&screenInfo.screens[i]->devPrivates, | |
1448 | dbeScreenPrivKey)); | |
1449 | dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, NULL); | |
1450 | } | |
1451 | return; | |
1452 | } | |
1453 | ||
1454 | /* Now add the extension. */ | |
1455 | extEntry = AddExtension(DBE_PROTOCOL_NAME, DbeNumberEvents, | |
1456 | DbeNumberErrors, ProcDbeDispatch, SProcDbeDispatch, | |
1457 | DbeResetProc, StandardMinorOpcode); | |
1458 | ||
1459 | dbeErrorBase = extEntry->errorBase; | |
1460 | SetResourceTypeErrorValue(dbeWindowPrivResType, | |
1461 | dbeErrorBase + DbeBadBuffer); | |
1462 | SetResourceTypeErrorValue(dbeDrawableResType, dbeErrorBase + DbeBadBuffer); | |
1463 | ||
1464 | } /* DbeExtensionInit() */ |