| 1 | /* |
| 2 | * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. |
| 3 | * |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining |
| 7 | * a copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation on the rights to use, copy, modify, merge, |
| 10 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, |
| 12 | * subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial |
| 16 | * portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 21 | * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS |
| 22 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 23 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 25 | * SOFTWARE. |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * Author: |
| 30 | * Rickard E. (Rik) Faith <faith@redhat.com> |
| 31 | * Kevin E. Martin <kem@redhat.com> |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | /** \file |
| 36 | * This file provides the only interface to the X server extension support |
| 37 | * in programs/Xserver/Xext. Those programs should only include dmxext.h |
| 38 | */ |
| 39 | |
| 40 | #ifdef HAVE_DMX_CONFIG_H |
| 41 | #include <dmx-config.h> |
| 42 | #endif |
| 43 | |
| 44 | #include <stdlib.h> |
| 45 | |
| 46 | #include "dmx.h" |
| 47 | #include "dmxinit.h" |
| 48 | #include "dmxextension.h" |
| 49 | #include "dmxwindow.h" |
| 50 | #include "dmxcb.h" |
| 51 | #include "dmxcursor.h" |
| 52 | #include "dmxpixmap.h" |
| 53 | #include "dmxgc.h" |
| 54 | #include "dmxfont.h" |
| 55 | #include "dmxcmap.h" |
| 56 | #include "dmxpict.h" |
| 57 | #include "dmxinput.h" |
| 58 | #include "dmxsync.h" |
| 59 | #include "dmxscrinit.h" |
| 60 | #include "input/dmxinputinit.h" |
| 61 | |
| 62 | #include "windowstr.h" |
| 63 | #include "inputstr.h" /* For DeviceIntRec */ |
| 64 | #include <X11/extensions/dmxproto.h> /* For DMX_BAD_* */ |
| 65 | #include "cursorstr.h" |
| 66 | |
| 67 | /* The default font is declared in dix/globals.c, but is not included in |
| 68 | * _any_ header files. */ |
| 69 | extern FontPtr defaultFont; |
| 70 | |
| 71 | /* Hack to get Present to build (present requires RandR) */ |
| 72 | RESTYPE RRCrtcType; |
| 73 | |
| 74 | /** This routine provides information to the DMX protocol extension |
| 75 | * about a particular screen. */ |
| 76 | Bool |
| 77 | dmxGetScreenAttributes(int physical, DMXScreenAttributesPtr attr) |
| 78 | { |
| 79 | DMXScreenInfo *dmxScreen; |
| 80 | |
| 81 | if (physical < 0 || physical >= dmxNumScreens) |
| 82 | return FALSE; |
| 83 | |
| 84 | dmxScreen = &dmxScreens[physical]; |
| 85 | attr->displayName = dmxScreen->name; |
| 86 | #ifdef PANORAMIX |
| 87 | attr->logicalScreen = noPanoramiXExtension ? dmxScreen->index : 0; |
| 88 | #else |
| 89 | attr->logicalScreen = dmxScreen->index; |
| 90 | #endif |
| 91 | |
| 92 | attr->screenWindowWidth = dmxScreen->scrnWidth; |
| 93 | attr->screenWindowHeight = dmxScreen->scrnHeight; |
| 94 | attr->screenWindowXoffset = dmxScreen->scrnX; |
| 95 | attr->screenWindowYoffset = dmxScreen->scrnY; |
| 96 | |
| 97 | attr->rootWindowWidth = dmxScreen->rootWidth; |
| 98 | attr->rootWindowHeight = dmxScreen->rootHeight; |
| 99 | attr->rootWindowXoffset = dmxScreen->rootX; |
| 100 | attr->rootWindowYoffset = dmxScreen->rootY; |
| 101 | |
| 102 | attr->rootWindowXorigin = dmxScreen->rootXOrigin; |
| 103 | attr->rootWindowYorigin = dmxScreen->rootYOrigin; |
| 104 | |
| 105 | return TRUE; |
| 106 | } |
| 107 | |
| 108 | /** This routine provides information to the DMX protocol extension |
| 109 | * about a particular window. */ |
| 110 | Bool |
| 111 | dmxGetWindowAttributes(WindowPtr pWindow, DMXWindowAttributesPtr attr) |
| 112 | { |
| 113 | dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pWindow); |
| 114 | |
| 115 | attr->screen = pWindow->drawable.pScreen->myNum; |
| 116 | attr->window = pWinPriv->window; |
| 117 | |
| 118 | attr->pos.x = pWindow->drawable.x; |
| 119 | attr->pos.y = pWindow->drawable.y; |
| 120 | attr->pos.width = pWindow->drawable.width; |
| 121 | attr->pos.height = pWindow->drawable.height; |
| 122 | |
| 123 | if (!pWinPriv->window || pWinPriv->offscreen) { |
| 124 | attr->vis.x = 0; |
| 125 | attr->vis.y = 0; |
| 126 | attr->vis.height = 0; |
| 127 | attr->vis.width = 0; |
| 128 | return pWinPriv->window ? TRUE : FALSE; |
| 129 | } |
| 130 | |
| 131 | /* Compute display-relative coordinates */ |
| 132 | attr->vis.x = pWindow->drawable.x; |
| 133 | attr->vis.y = pWindow->drawable.y; |
| 134 | attr->vis.width = pWindow->drawable.width; |
| 135 | attr->vis.height = pWindow->drawable.height; |
| 136 | |
| 137 | if (attr->pos.x < 0) { |
| 138 | attr->vis.x -= attr->pos.x; |
| 139 | attr->vis.width = attr->pos.x + attr->pos.width - attr->vis.x; |
| 140 | } |
| 141 | if (attr->pos.x + attr->pos.width > pWindow->drawable.pScreen->width) { |
| 142 | if (attr->pos.x < 0) |
| 143 | attr->vis.width = pWindow->drawable.pScreen->width; |
| 144 | else |
| 145 | attr->vis.width = pWindow->drawable.pScreen->width - attr->pos.x; |
| 146 | } |
| 147 | if (attr->pos.y < 0) { |
| 148 | attr->vis.y -= attr->pos.y; |
| 149 | attr->vis.height = attr->pos.y + attr->pos.height - attr->vis.y; |
| 150 | } |
| 151 | if (attr->pos.y + attr->pos.height > pWindow->drawable.pScreen->height) { |
| 152 | if (attr->pos.y < 0) |
| 153 | attr->vis.height = pWindow->drawable.pScreen->height; |
| 154 | else |
| 155 | attr->vis.height = pWindow->drawable.pScreen->height - attr->pos.y; |
| 156 | } |
| 157 | |
| 158 | /* Convert to window-relative coordinates */ |
| 159 | attr->vis.x -= attr->pos.x; |
| 160 | attr->vis.y -= attr->pos.y; |
| 161 | |
| 162 | return TRUE; |
| 163 | } |
| 164 | |
| 165 | void |
| 166 | dmxGetDesktopAttributes(DMXDesktopAttributesPtr attr) |
| 167 | { |
| 168 | attr->width = dmxGlobalWidth; |
| 169 | attr->height = dmxGlobalHeight; |
| 170 | attr->shiftX = 0; /* NOTE: The upper left hand corner of */ |
| 171 | attr->shiftY = 0; /* the desktop is always <0,0>. */ |
| 172 | } |
| 173 | |
| 174 | /** Return the total number of devices, not just #dmxNumInputs. The |
| 175 | * number returned should be the same as that returned by |
| 176 | * XListInputDevices. */ |
| 177 | int |
| 178 | dmxGetInputCount(void) |
| 179 | { |
| 180 | int i, total; |
| 181 | |
| 182 | for (total = i = 0; i < dmxNumInputs; i++) |
| 183 | total += dmxInputs[i].numDevs; |
| 184 | return total; |
| 185 | } |
| 186 | |
| 187 | /** Return information about the device with id = \a deviceId. This |
| 188 | * information is primarily for the #ProcDMXGetInputAttributes() |
| 189 | * function, which does not have access to the appropriate data |
| 190 | * structure. */ |
| 191 | int |
| 192 | dmxGetInputAttributes(int deviceId, DMXInputAttributesPtr attr) |
| 193 | { |
| 194 | int i, j; |
| 195 | DMXInputInfo *dmxInput; |
| 196 | |
| 197 | if (deviceId < 0) |
| 198 | return -1; |
| 199 | for (i = 0; i < dmxNumInputs; i++) { |
| 200 | dmxInput = &dmxInputs[i]; |
| 201 | for (j = 0; j < dmxInput->numDevs; j++) { |
| 202 | DMXLocalInputInfoPtr dmxLocal = dmxInput->devs[j]; |
| 203 | |
| 204 | if (deviceId != dmxLocal->pDevice->id) |
| 205 | continue; |
| 206 | attr->isCore = ! !dmxLocal->isCore; |
| 207 | attr->sendsCore = ! !dmxLocal->sendsCore; |
| 208 | attr->detached = ! !dmxInput->detached; |
| 209 | attr->physicalScreen = -1; |
| 210 | attr->physicalId = -1; |
| 211 | attr->name = NULL; |
| 212 | switch (dmxLocal->extType) { |
| 213 | case DMX_LOCAL_TYPE_LOCAL: |
| 214 | attr->inputType = 0; |
| 215 | break; |
| 216 | case DMX_LOCAL_TYPE_CONSOLE: |
| 217 | attr->inputType = 1; |
| 218 | attr->name = dmxInput->name; |
| 219 | attr->physicalId = dmxLocal->deviceId; |
| 220 | break; |
| 221 | case DMX_LOCAL_TYPE_BACKEND: |
| 222 | case DMX_LOCAL_TYPE_COMMON: |
| 223 | attr->inputType = 2; |
| 224 | attr->physicalScreen = dmxInput->scrnIdx; |
| 225 | attr->name = dmxInput->name; |
| 226 | attr->physicalId = dmxLocal->deviceId; |
| 227 | break; |
| 228 | } |
| 229 | return 0; /* Success */ |
| 230 | } |
| 231 | } |
| 232 | return -1; /* Failure */ |
| 233 | } |
| 234 | |
| 235 | /** Reinitialized the cursor boundaries. */ |
| 236 | static void |
| 237 | dmxAdjustCursorBoundaries(void) |
| 238 | { |
| 239 | int i; |
| 240 | |
| 241 | dmxReInitOrigins(); |
| 242 | dmxInitOverlap(); |
| 243 | dmxComputeWidthHeight(DMX_NO_RECOMPUTE_BOUNDING_BOX); |
| 244 | dmxConnectionBlockCallback(); |
| 245 | for (i = 0; i < dmxNumInputs; i++) { |
| 246 | DMXInputInfo *dmxInput = &dmxInputs[i]; |
| 247 | |
| 248 | if (!dmxInput->detached) |
| 249 | dmxInputReInit(dmxInput); |
| 250 | } |
| 251 | |
| 252 | dmxCheckCursor(); |
| 253 | |
| 254 | for (i = 0; i < dmxNumInputs; i++) { |
| 255 | DMXInputInfo *dmxInput = &dmxInputs[i]; |
| 256 | |
| 257 | if (!dmxInput->detached) |
| 258 | dmxInputLateReInit(dmxInput); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | /** Add an input with the specified attributes. If the input is added, |
| 263 | * the physical id is returned in \a deviceId. */ |
| 264 | int |
| 265 | dmxAddInput(DMXInputAttributesPtr attr, int *id) |
| 266 | { |
| 267 | int retcode = BadValue; |
| 268 | |
| 269 | if (attr->inputType == 1) /* console */ |
| 270 | retcode = dmxInputAttachConsole(attr->name, attr->sendsCore, id); |
| 271 | else if (attr->inputType == 2) /* backend */ |
| 272 | retcode = dmxInputAttachBackend(attr->physicalScreen, |
| 273 | attr->sendsCore, id); |
| 274 | |
| 275 | if (retcode == Success) { |
| 276 | /* Adjust the cursor boundaries */ |
| 277 | dmxAdjustCursorBoundaries(); |
| 278 | |
| 279 | /* Force completion of the changes */ |
| 280 | dmxSync(NULL, TRUE); |
| 281 | } |
| 282 | |
| 283 | return retcode; |
| 284 | } |
| 285 | |
| 286 | /** Remove the input with physical id \a id. */ |
| 287 | int |
| 288 | dmxRemoveInput(int id) |
| 289 | { |
| 290 | return dmxInputDetachId(id); |
| 291 | } |
| 292 | |
| 293 | /** Return the value of #dmxNumScreens -- the total number of backend |
| 294 | * screens in use (these are logical screens and may be larger than the |
| 295 | * number of backend displays). */ |
| 296 | unsigned long |
| 297 | dmxGetNumScreens(void) |
| 298 | { |
| 299 | return dmxNumScreens; |
| 300 | } |
| 301 | |
| 302 | /** Make sure that #dmxCreateAndRealizeWindow has been called for \a |
| 303 | * pWindow. */ |
| 304 | void |
| 305 | dmxForceWindowCreation(WindowPtr pWindow) |
| 306 | { |
| 307 | dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pWindow); |
| 308 | |
| 309 | if (!pWinPriv->window) |
| 310 | dmxCreateAndRealizeWindow(pWindow, TRUE); |
| 311 | } |
| 312 | |
| 313 | /** Flush pending syncs for all screens. */ |
| 314 | void |
| 315 | dmxFlushPendingSyncs(void) |
| 316 | { |
| 317 | dmxSync(NULL, TRUE); |
| 318 | } |
| 319 | |
| 320 | /** Update DMX's screen resources to match those of the newly moved |
| 321 | * and/or resized "root" window. */ |
| 322 | void |
| 323 | dmxUpdateScreenResources(ScreenPtr pScreen, int x, int y, int w, int h) |
| 324 | { |
| 325 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 326 | WindowPtr pRoot = pScreen->root; |
| 327 | WindowPtr pChild; |
| 328 | Bool anyMarked = FALSE; |
| 329 | |
| 330 | /* Handle special case where width and/or height are zero */ |
| 331 | if (w == 0 || h == 0) { |
| 332 | w = 1; |
| 333 | h = 1; |
| 334 | } |
| 335 | |
| 336 | /* Change screen size */ |
| 337 | pScreen->width = w; |
| 338 | pScreen->height = h; |
| 339 | |
| 340 | /* Reset the root window's drawable's size */ |
| 341 | pRoot->drawable.width = w; |
| 342 | pRoot->drawable.height = h; |
| 343 | |
| 344 | /* Set the root window's new winSize and borderSize */ |
| 345 | pRoot->winSize.extents.x1 = 0; |
| 346 | pRoot->winSize.extents.y1 = 0; |
| 347 | pRoot->winSize.extents.x2 = w; |
| 348 | pRoot->winSize.extents.y2 = h; |
| 349 | |
| 350 | pRoot->borderSize.extents.x1 = 0; |
| 351 | pRoot->borderSize.extents.y1 = 0; |
| 352 | pRoot->borderSize.extents.x2 = w; |
| 353 | pRoot->borderSize.extents.y2 = h; |
| 354 | |
| 355 | /* Recompute this screen's mmWidth & mmHeight */ |
| 356 | pScreen->mmWidth = |
| 357 | (w * 254 + dmxScreen->beXDPI * 5) / (dmxScreen->beXDPI * 10); |
| 358 | pScreen->mmHeight = |
| 359 | (h * 254 + dmxScreen->beYDPI * 5) / (dmxScreen->beYDPI * 10); |
| 360 | |
| 361 | /* Recompute this screen's window's clip rects as follows: */ |
| 362 | /* 1. Mark all of root's children's windows */ |
| 363 | for (pChild = pRoot->firstChild; pChild; pChild = pChild->nextSib) |
| 364 | anyMarked |= pScreen->MarkOverlappedWindows(pChild, pChild, |
| 365 | (WindowPtr *) NULL); |
| 366 | |
| 367 | /* 2. Set the root window's borderClip */ |
| 368 | pRoot->borderClip.extents.x1 = 0; |
| 369 | pRoot->borderClip.extents.y1 = 0; |
| 370 | pRoot->borderClip.extents.x2 = w; |
| 371 | pRoot->borderClip.extents.y2 = h; |
| 372 | |
| 373 | /* 3. Set the root window's clipList */ |
| 374 | if (anyMarked) { |
| 375 | /* If any windows have been marked, set the root window's |
| 376 | * clipList to be broken since it will be recalculated in |
| 377 | * ValidateTree() |
| 378 | */ |
| 379 | RegionBreak(&pRoot->clipList); |
| 380 | } |
| 381 | else { |
| 382 | /* Otherwise, we just set it directly since there are no |
| 383 | * windows visible on this screen |
| 384 | */ |
| 385 | pRoot->clipList.extents.x1 = 0; |
| 386 | pRoot->clipList.extents.y1 = 0; |
| 387 | pRoot->clipList.extents.x2 = w; |
| 388 | pRoot->clipList.extents.y2 = h; |
| 389 | } |
| 390 | |
| 391 | /* 4. Revalidate all clip rects and generate expose events */ |
| 392 | if (anyMarked) { |
| 393 | pScreen->ValidateTree(pRoot, NULL, VTBroken); |
| 394 | pScreen->HandleExposures(pRoot); |
| 395 | if (pScreen->PostValidateTree) |
| 396 | pScreen->PostValidateTree(pRoot, NULL, VTBroken); |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | #ifdef PANORAMIX |
| 401 | #include "panoramiXsrv.h" |
| 402 | |
| 403 | /** Change the "screen" window attributes by resizing the actual window |
| 404 | * on the back-end display (if necessary). */ |
| 405 | static void |
| 406 | dmxConfigureScreenWindow(int idx, int x, int y, int w, int h) |
| 407 | { |
| 408 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 409 | ScreenPtr pScreen = screenInfo.screens[idx]; |
| 410 | |
| 411 | /* Resize "screen" window */ |
| 412 | if (dmxScreen->scrnX != x || |
| 413 | dmxScreen->scrnY != y || |
| 414 | dmxScreen->scrnWidth != w || dmxScreen->scrnHeight != h) { |
| 415 | dmxResizeScreenWindow(pScreen, x, y, w, h); |
| 416 | } |
| 417 | |
| 418 | /* Change "screen" window values */ |
| 419 | dmxScreen->scrnX = x; |
| 420 | dmxScreen->scrnY = y; |
| 421 | dmxScreen->scrnWidth = w; |
| 422 | dmxScreen->scrnHeight = h; |
| 423 | } |
| 424 | |
| 425 | /** Change the "root" window position and size by resizing the actual |
| 426 | * window on the back-end display (if necessary) and updating all of |
| 427 | * DMX's resources by calling #dmxUpdateScreenResources. */ |
| 428 | static void |
| 429 | dmxConfigureRootWindow(int idx, int x, int y, int w, int h) |
| 430 | { |
| 431 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 432 | WindowPtr pRoot = screenInfo.screens[idx]->root; |
| 433 | |
| 434 | /* NOTE: Either this function or the ones that it calls must handle |
| 435 | * the case where w == 0 || h == 0. Currently, the functions that |
| 436 | * this one calls handle that case. */ |
| 437 | |
| 438 | /* 1. Resize "root" window */ |
| 439 | if (dmxScreen->rootX != x || |
| 440 | dmxScreen->rootY != y || |
| 441 | dmxScreen->rootWidth != w || dmxScreen->rootHeight != h) { |
| 442 | dmxResizeRootWindow(pRoot, x, y, w, h); |
| 443 | } |
| 444 | |
| 445 | /* 2. Update all of the screen's resources associated with this root |
| 446 | * window */ |
| 447 | if (dmxScreen->rootWidth != w || dmxScreen->rootHeight != h) { |
| 448 | dmxUpdateScreenResources(screenInfo.screens[idx], x, y, w, h); |
| 449 | } |
| 450 | |
| 451 | /* Change "root" window values */ |
| 452 | dmxScreen->rootX = x; |
| 453 | dmxScreen->rootY = y; |
| 454 | dmxScreen->rootWidth = w; |
| 455 | dmxScreen->rootHeight = h; |
| 456 | } |
| 457 | |
| 458 | /** Change the "root" window's origin by updating DMX's internal data |
| 459 | * structures (dix and Xinerama) to use the new origin and adjust the |
| 460 | * positions of windows that overlap this "root" window. */ |
| 461 | static void |
| 462 | dmxSetRootWindowOrigin(int idx, int x, int y) |
| 463 | { |
| 464 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 465 | ScreenPtr pScreen = screenInfo.screens[idx]; |
| 466 | WindowPtr pRoot = pScreen->root; |
| 467 | WindowPtr pChild; |
| 468 | int xoff; |
| 469 | int yoff; |
| 470 | |
| 471 | /* Change "root" window's origin */ |
| 472 | dmxScreen->rootXOrigin = x; |
| 473 | dmxScreen->rootYOrigin = y; |
| 474 | |
| 475 | /* Compute offsets here in case <x,y> has been changed above */ |
| 476 | xoff = x - pScreen->x; |
| 477 | yoff = y - pScreen->y; |
| 478 | |
| 479 | /* Adjust the root window's position */ |
| 480 | pScreen->x = dmxScreen->rootXOrigin; |
| 481 | pScreen->y = dmxScreen->rootYOrigin; |
| 482 | |
| 483 | /* Recalculate the Xinerama regions and data structs */ |
| 484 | XineramaReinitData(); |
| 485 | |
| 486 | /* Adjust each of the root window's children */ |
| 487 | if (!idx) |
| 488 | ReinitializeRootWindow(screenInfo.screens[0]->root, xoff, yoff); |
| 489 | pChild = pRoot->firstChild; |
| 490 | while (pChild) { |
| 491 | /* Adjust child window's position */ |
| 492 | pScreen->MoveWindow(pChild, |
| 493 | pChild->origin.x - wBorderWidth(pChild) - xoff, |
| 494 | pChild->origin.y - wBorderWidth(pChild) - yoff, |
| 495 | pChild->nextSib, VTMove); |
| 496 | |
| 497 | /* Note that the call to MoveWindow will eventually call |
| 498 | * dmxPositionWindow which will automatically create a |
| 499 | * window if it is now exposed on screen (for lazy window |
| 500 | * creation optimization) and it will properly set the |
| 501 | * offscreen flag. |
| 502 | */ |
| 503 | |
| 504 | pChild = pChild->nextSib; |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | /** Configure the attributes of each "screen" and "root" window. */ |
| 509 | int |
| 510 | dmxConfigureScreenWindows(int nscreens, |
| 511 | CARD32 *screens, |
| 512 | DMXScreenAttributesPtr attribs, int *errorScreen) |
| 513 | { |
| 514 | int i; |
| 515 | |
| 516 | for (i = 0; i < nscreens; i++) { |
| 517 | DMXScreenAttributesPtr attr = &attribs[i]; |
| 518 | int idx = screens[i]; |
| 519 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 520 | |
| 521 | if (errorScreen) |
| 522 | *errorScreen = i; |
| 523 | |
| 524 | if (!dmxScreen->beDisplay) |
| 525 | return DMX_BAD_VALUE; |
| 526 | |
| 527 | /* Check for illegal values */ |
| 528 | if (idx < 0 || idx >= dmxNumScreens) |
| 529 | return BadValue; |
| 530 | |
| 531 | /* The "screen" and "root" windows must have valid sizes */ |
| 532 | if (attr->screenWindowWidth <= 0 || attr->screenWindowHeight <= 0 || |
| 533 | attr->rootWindowWidth < 0 || attr->rootWindowHeight < 0) |
| 534 | return DMX_BAD_VALUE; |
| 535 | |
| 536 | /* The "screen" window must fit entirely within the BE display */ |
| 537 | if (attr->screenWindowXoffset < 0 || |
| 538 | attr->screenWindowYoffset < 0 || |
| 539 | attr->screenWindowXoffset |
| 540 | + attr->screenWindowWidth > (unsigned) dmxScreen->beWidth || |
| 541 | attr->screenWindowYoffset |
| 542 | + attr->screenWindowHeight > (unsigned) dmxScreen->beHeight) |
| 543 | return DMX_BAD_VALUE; |
| 544 | |
| 545 | /* The "root" window must fit entirely within the "screen" window */ |
| 546 | if (attr->rootWindowXoffset < 0 || |
| 547 | attr->rootWindowYoffset < 0 || |
| 548 | attr->rootWindowXoffset |
| 549 | + attr->rootWindowWidth > attr->screenWindowWidth || |
| 550 | attr->rootWindowYoffset |
| 551 | + attr->rootWindowHeight > attr->screenWindowHeight) |
| 552 | return DMX_BAD_VALUE; |
| 553 | |
| 554 | /* The "root" window must not expose unaddressable coordinates */ |
| 555 | if (attr->rootWindowXorigin < 0 || |
| 556 | attr->rootWindowYorigin < 0 || |
| 557 | attr->rootWindowXorigin + attr->rootWindowWidth > 32767 || |
| 558 | attr->rootWindowYorigin + attr->rootWindowHeight > 32767) |
| 559 | return DMX_BAD_VALUE; |
| 560 | |
| 561 | /* The "root" window must fit within the global bounding box */ |
| 562 | if (attr->rootWindowXorigin |
| 563 | + attr->rootWindowWidth > (unsigned) dmxGlobalWidth || |
| 564 | attr->rootWindowYorigin |
| 565 | + attr->rootWindowHeight > (unsigned) dmxGlobalHeight) |
| 566 | return DMX_BAD_VALUE; |
| 567 | |
| 568 | /* FIXME: Handle the rest of the illegal value checking */ |
| 569 | } |
| 570 | |
| 571 | /* No illegal values found */ |
| 572 | if (errorScreen) |
| 573 | *errorScreen = 0; |
| 574 | |
| 575 | for (i = 0; i < nscreens; i++) { |
| 576 | DMXScreenAttributesPtr attr = &attribs[i]; |
| 577 | int idx = screens[i]; |
| 578 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 579 | |
| 580 | dmxLog(dmxInfo, "Changing screen #%d attributes " |
| 581 | "from %dx%d+%d+%d %dx%d+%d+%d +%d+%d " |
| 582 | "to %dx%d+%d+%d %dx%d+%d+%d +%d+%d\n", |
| 583 | idx, |
| 584 | dmxScreen->scrnWidth, dmxScreen->scrnHeight, |
| 585 | dmxScreen->scrnX, dmxScreen->scrnY, |
| 586 | dmxScreen->rootWidth, dmxScreen->rootHeight, |
| 587 | dmxScreen->rootX, dmxScreen->rootY, |
| 588 | dmxScreen->rootXOrigin, dmxScreen->rootYOrigin, |
| 589 | attr->screenWindowWidth, attr->screenWindowHeight, |
| 590 | attr->screenWindowXoffset, attr->screenWindowYoffset, |
| 591 | attr->rootWindowWidth, attr->rootWindowHeight, |
| 592 | attr->rootWindowXoffset, attr->rootWindowYoffset, |
| 593 | attr->rootWindowXorigin, attr->rootWindowYorigin); |
| 594 | |
| 595 | /* Configure "screen" window */ |
| 596 | dmxConfigureScreenWindow(idx, |
| 597 | attr->screenWindowXoffset, |
| 598 | attr->screenWindowYoffset, |
| 599 | attr->screenWindowWidth, |
| 600 | attr->screenWindowHeight); |
| 601 | |
| 602 | /* Configure "root" window */ |
| 603 | dmxConfigureRootWindow(idx, |
| 604 | attr->rootWindowXoffset, |
| 605 | attr->rootWindowYoffset, |
| 606 | attr->rootWindowWidth, attr->rootWindowHeight); |
| 607 | |
| 608 | /* Set "root" window's origin */ |
| 609 | dmxSetRootWindowOrigin(idx, |
| 610 | attr->rootWindowXorigin, |
| 611 | attr->rootWindowYorigin); |
| 612 | } |
| 613 | |
| 614 | /* Adjust the cursor boundaries */ |
| 615 | dmxAdjustCursorBoundaries(); |
| 616 | |
| 617 | /* Force completion of the changes */ |
| 618 | dmxSync(NULL, TRUE); |
| 619 | |
| 620 | return Success; |
| 621 | } |
| 622 | |
| 623 | /** Configure the attributes of the global desktop. */ |
| 624 | int |
| 625 | dmxConfigureDesktop(DMXDesktopAttributesPtr attribs) |
| 626 | { |
| 627 | if (attribs->width <= 0 || attribs->width >= 32767 || |
| 628 | attribs->height <= 0 || attribs->height >= 32767) |
| 629 | return DMX_BAD_VALUE; |
| 630 | |
| 631 | /* If the desktop is shrinking, adjust the "root" windows on each |
| 632 | * "screen" window to only show the visible desktop. Also, handle |
| 633 | * the special case where the desktop shrinks such that the it no |
| 634 | * longer overlaps an portion of a "screen" window. */ |
| 635 | if (attribs->width < dmxGlobalWidth || attribs->height < dmxGlobalHeight) { |
| 636 | int i; |
| 637 | |
| 638 | for (i = 0; i < dmxNumScreens; i++) { |
| 639 | DMXScreenInfo *dmxScreen = &dmxScreens[i]; |
| 640 | |
| 641 | if (dmxScreen->rootXOrigin |
| 642 | + dmxScreen->rootWidth > attribs->width || |
| 643 | dmxScreen->rootYOrigin |
| 644 | + dmxScreen->rootHeight > attribs->height) { |
| 645 | int w, h; |
| 646 | |
| 647 | if ((w = attribs->width - dmxScreen->rootXOrigin) < 0) |
| 648 | w = 0; |
| 649 | if ((h = attribs->height - dmxScreen->rootYOrigin) < 0) |
| 650 | h = 0; |
| 651 | if (w > dmxScreen->scrnWidth) |
| 652 | w = dmxScreen->scrnWidth; |
| 653 | if (h > dmxScreen->scrnHeight) |
| 654 | h = dmxScreen->scrnHeight; |
| 655 | if (w > dmxScreen->rootWidth) |
| 656 | w = dmxScreen->rootWidth; |
| 657 | if (h > dmxScreen->rootHeight) |
| 658 | h = dmxScreen->rootHeight; |
| 659 | dmxConfigureRootWindow(i, |
| 660 | dmxScreen->rootX, |
| 661 | dmxScreen->rootY, w, h); |
| 662 | } |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | /* Set the global width/height */ |
| 667 | dmxSetWidthHeight(attribs->width, attribs->height); |
| 668 | |
| 669 | /* Handle shift[XY] changes */ |
| 670 | if (attribs->shiftX || attribs->shiftY) { |
| 671 | int i; |
| 672 | |
| 673 | for (i = 0; i < dmxNumScreens; i++) { |
| 674 | ScreenPtr pScreen = screenInfo.screens[i]; |
| 675 | WindowPtr pChild = pScreen->root->firstChild; |
| 676 | |
| 677 | while (pChild) { |
| 678 | /* Adjust child window's position */ |
| 679 | pScreen->MoveWindow(pChild, |
| 680 | pChild->origin.x - wBorderWidth(pChild) |
| 681 | - attribs->shiftX, |
| 682 | pChild->origin.y - wBorderWidth(pChild) |
| 683 | - attribs->shiftY, pChild->nextSib, VTMove); |
| 684 | |
| 685 | /* Note that the call to MoveWindow will eventually call |
| 686 | * dmxPositionWindow which will automatically create a |
| 687 | * window if it is now exposed on screen (for lazy |
| 688 | * window creation optimization) and it will properly |
| 689 | * set the offscreen flag. |
| 690 | */ |
| 691 | |
| 692 | pChild = pChild->nextSib; |
| 693 | } |
| 694 | } |
| 695 | } |
| 696 | |
| 697 | /* Update connection block, Xinerama, etc. -- these appears to |
| 698 | * already be handled in dmxConnectionBlockCallback(), which is |
| 699 | * called from dmxAdjustCursorBoundaries() [below]. */ |
| 700 | |
| 701 | /* Adjust the cursor boundaries */ |
| 702 | dmxAdjustCursorBoundaries(); |
| 703 | |
| 704 | /* Force completion of the changes */ |
| 705 | dmxSync(NULL, TRUE); |
| 706 | |
| 707 | return Success; |
| 708 | } |
| 709 | #endif |
| 710 | |
| 711 | /** Create the scratch GCs per depth. */ |
| 712 | static void |
| 713 | dmxBECreateScratchGCs(int scrnNum) |
| 714 | { |
| 715 | ScreenPtr pScreen = screenInfo.screens[scrnNum]; |
| 716 | GCPtr *ppGC = pScreen->GCperDepth; |
| 717 | int i; |
| 718 | |
| 719 | for (i = 0; i <= pScreen->numDepths; i++) |
| 720 | dmxBECreateGC(pScreen, ppGC[i]); |
| 721 | } |
| 722 | |
| 723 | #ifdef PANORAMIX |
| 724 | static Bool FoundPixImage; |
| 725 | |
| 726 | /** Search the Xinerama XRT_PIXMAP resources for the pixmap that needs |
| 727 | * to have its image restored. When it is found, see if there is |
| 728 | * another screen with the same image. If so, copy the pixmap image |
| 729 | * from the existing screen to the newly created pixmap. */ |
| 730 | static void |
| 731 | dmxBERestorePixmapImage(pointer value, XID id, RESTYPE type, pointer p) |
| 732 | { |
| 733 | if ((type & TypeMask) == (XRT_PIXMAP & TypeMask)) { |
| 734 | PixmapPtr pDst = (PixmapPtr) p; |
| 735 | int idx = pDst->drawable.pScreen->myNum; |
| 736 | PanoramiXRes *pXinPix = (PanoramiXRes *) value; |
| 737 | PixmapPtr pPix; |
| 738 | int i; |
| 739 | |
| 740 | dixLookupResourceByType((pointer *) &pPix, pXinPix->info[idx].id, |
| 741 | RT_PIXMAP, NullClient, DixUnknownAccess); |
| 742 | if (pPix != pDst) |
| 743 | return; /* Not a match.... Next! */ |
| 744 | |
| 745 | FOR_NSCREENS(i) { |
| 746 | PixmapPtr pSrc; |
| 747 | dmxPixPrivPtr pSrcPriv = NULL; |
| 748 | |
| 749 | if (i == idx) |
| 750 | continue; /* Self replication is bad */ |
| 751 | |
| 752 | dixLookupResourceByType((pointer *) &pSrc, pXinPix->info[i].id, |
| 753 | RT_PIXMAP, NullClient, DixUnknownAccess); |
| 754 | pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc); |
| 755 | if (pSrcPriv->pixmap) { |
| 756 | DMXScreenInfo *dmxSrcScreen = &dmxScreens[i]; |
| 757 | DMXScreenInfo *dmxDstScreen = &dmxScreens[idx]; |
| 758 | dmxPixPrivPtr pDstPriv = DMX_GET_PIXMAP_PRIV(pDst); |
| 759 | XImage *img; |
| 760 | int j; |
| 761 | XlibGC gc = NULL; |
| 762 | |
| 763 | /* This should never happen, but just in case.... */ |
| 764 | if (pSrc->drawable.width != pDst->drawable.width || |
| 765 | pSrc->drawable.height != pDst->drawable.height) |
| 766 | return; |
| 767 | |
| 768 | /* Copy from src pixmap to dst pixmap */ |
| 769 | img = XGetImage(dmxSrcScreen->beDisplay, |
| 770 | pSrcPriv->pixmap, |
| 771 | 0, 0, |
| 772 | pSrc->drawable.width, pSrc->drawable.height, |
| 773 | -1, ZPixmap); |
| 774 | |
| 775 | for (j = 0; j < dmxDstScreen->beNumPixmapFormats; j++) { |
| 776 | if (dmxDstScreen->bePixmapFormats[j].depth == img->depth) { |
| 777 | unsigned long m; |
| 778 | XGCValues v; |
| 779 | |
| 780 | m = GCFunction | GCPlaneMask | GCClipMask; |
| 781 | v.function = GXcopy; |
| 782 | v.plane_mask = AllPlanes; |
| 783 | v.clip_mask = None; |
| 784 | |
| 785 | gc = XCreateGC(dmxDstScreen->beDisplay, |
| 786 | dmxDstScreen->scrnDefDrawables[j], |
| 787 | m, &v); |
| 788 | break; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | if (gc) { |
| 793 | XPutImage(dmxDstScreen->beDisplay, |
| 794 | pDstPriv->pixmap, |
| 795 | gc, img, 0, 0, 0, 0, |
| 796 | pDst->drawable.width, pDst->drawable.height); |
| 797 | XFreeGC(dmxDstScreen->beDisplay, gc); |
| 798 | FoundPixImage = True; |
| 799 | } |
| 800 | else { |
| 801 | dmxLog(dmxWarning, "Could not create GC\n"); |
| 802 | } |
| 803 | |
| 804 | XDestroyImage(img); |
| 805 | return; |
| 806 | } |
| 807 | } |
| 808 | } |
| 809 | } |
| 810 | #endif |
| 811 | |
| 812 | /** Restore the pixmap image either from another screen or from an image |
| 813 | * that was saved when the screen was previously detached. */ |
| 814 | static void |
| 815 | dmxBERestorePixmap(PixmapPtr pPixmap) |
| 816 | { |
| 817 | #ifdef PANORAMIX |
| 818 | int i; |
| 819 | |
| 820 | /* If Xinerama is not active, there's nothing we can do (see comment |
| 821 | * in #else below for more info). */ |
| 822 | if (noPanoramiXExtension) { |
| 823 | dmxLog(dmxWarning, "Cannot restore pixmap image\n"); |
| 824 | return; |
| 825 | } |
| 826 | |
| 827 | FoundPixImage = False; |
| 828 | for (i = currentMaxClients; --i >= 0;) |
| 829 | if (clients[i]) |
| 830 | FindAllClientResources(clients[i], dmxBERestorePixmapImage, |
| 831 | (pointer) pPixmap); |
| 832 | |
| 833 | /* No corresponding pixmap image was found on other screens, so we |
| 834 | * need to copy it from the saved image when the screen was detached |
| 835 | * (if available). */ |
| 836 | if (!FoundPixImage) { |
| 837 | dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap); |
| 838 | |
| 839 | if (pPixPriv->detachedImage) { |
| 840 | ScreenPtr pScreen = pPixmap->drawable.pScreen; |
| 841 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 842 | XlibGC gc = NULL; |
| 843 | |
| 844 | for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) { |
| 845 | if (dmxScreen->bePixmapFormats[i].depth == |
| 846 | pPixPriv->detachedImage->depth) { |
| 847 | unsigned long m; |
| 848 | XGCValues v; |
| 849 | |
| 850 | m = GCFunction | GCPlaneMask | GCClipMask; |
| 851 | v.function = GXcopy; |
| 852 | v.plane_mask = AllPlanes; |
| 853 | v.clip_mask = None; |
| 854 | |
| 855 | gc = XCreateGC(dmxScreen->beDisplay, |
| 856 | dmxScreen->scrnDefDrawables[i], m, &v); |
| 857 | break; |
| 858 | } |
| 859 | } |
| 860 | |
| 861 | if (gc) { |
| 862 | XPutImage(dmxScreen->beDisplay, |
| 863 | pPixPriv->pixmap, |
| 864 | gc, |
| 865 | pPixPriv->detachedImage, |
| 866 | 0, 0, 0, 0, |
| 867 | pPixmap->drawable.width, pPixmap->drawable.height); |
| 868 | XFreeGC(dmxScreen->beDisplay, gc); |
| 869 | } |
| 870 | else { |
| 871 | dmxLog(dmxWarning, "Cannot restore pixmap image\n"); |
| 872 | } |
| 873 | |
| 874 | XDestroyImage(pPixPriv->detachedImage); |
| 875 | pPixPriv->detachedImage = NULL; |
| 876 | } |
| 877 | else { |
| 878 | dmxLog(dmxWarning, "Cannot restore pixmap image\n"); |
| 879 | } |
| 880 | } |
| 881 | #else |
| 882 | /* If Xinerama is not enabled, then there is no other copy of the |
| 883 | * pixmap image that we can restore. Saving all pixmap data is not |
| 884 | * a feasible option since there is no mechanism for updating pixmap |
| 885 | * data when a screen is detached, which means that the data that |
| 886 | * was previously saved would most likely be out of date. */ |
| 887 | dmxLog(dmxWarning, "Cannot restore pixmap image\n"); |
| 888 | return; |
| 889 | #endif |
| 890 | } |
| 891 | |
| 892 | /** Create resources on the back-end server. This function is called |
| 893 | * from #dmxAttachScreen() via the dix layer's FindAllResources |
| 894 | * function. It walks all resources, compares them to the screen |
| 895 | * number passed in as \a n and calls the appropriate DMX function to |
| 896 | * create the associated resource on the back-end server. */ |
| 897 | static void |
| 898 | dmxBECreateResources(pointer value, XID id, RESTYPE type, pointer n) |
| 899 | { |
| 900 | int scrnNum = (uintptr_t) n; |
| 901 | ScreenPtr pScreen = screenInfo.screens[scrnNum]; |
| 902 | |
| 903 | if ((type & TypeMask) == (RT_WINDOW & TypeMask)) { |
| 904 | /* Window resources are created below in dmxBECreateWindowTree */ |
| 905 | } |
| 906 | else if ((type & TypeMask) == (RT_PIXMAP & TypeMask)) { |
| 907 | PixmapPtr pPix = value; |
| 908 | |
| 909 | if (pPix->drawable.pScreen->myNum == scrnNum) { |
| 910 | dmxBECreatePixmap(pPix); |
| 911 | dmxBERestorePixmap(pPix); |
| 912 | } |
| 913 | } |
| 914 | else if ((type & TypeMask) == (RT_GC & TypeMask)) { |
| 915 | GCPtr pGC = value; |
| 916 | |
| 917 | if (pGC->pScreen->myNum == scrnNum) { |
| 918 | /* Create the GC on the back-end server */ |
| 919 | dmxBECreateGC(pScreen, pGC); |
| 920 | /* Create any pixmaps associated with this GC */ |
| 921 | if (!pGC->tileIsPixel) { |
| 922 | dmxBECreatePixmap(pGC->tile.pixmap); |
| 923 | dmxBERestorePixmap(pGC->tile.pixmap); |
| 924 | } |
| 925 | if (pGC->stipple != pScreen->PixmapPerDepth[0]) { |
| 926 | dmxBECreatePixmap(pGC->stipple); |
| 927 | dmxBERestorePixmap(pGC->stipple); |
| 928 | } |
| 929 | if (pGC->font != defaultFont) { |
| 930 | (void) dmxBELoadFont(pScreen, pGC->font); |
| 931 | } |
| 932 | /* Update the GC on the back-end server */ |
| 933 | dmxChangeGC(pGC, -1L); |
| 934 | } |
| 935 | } |
| 936 | else if ((type & TypeMask) == (RT_FONT & TypeMask)) { |
| 937 | (void) dmxBELoadFont(pScreen, (FontPtr) value); |
| 938 | } |
| 939 | else if ((type & TypeMask) == (RT_CURSOR & TypeMask)) { |
| 940 | dmxBECreateCursor(pScreen, (CursorPtr) value); |
| 941 | } |
| 942 | else if ((type & TypeMask) == (RT_COLORMAP & TypeMask)) { |
| 943 | ColormapPtr pCmap = value; |
| 944 | |
| 945 | if (pCmap->pScreen->myNum == scrnNum) |
| 946 | (void) dmxBECreateColormap((ColormapPtr) value); |
| 947 | #if 0 |
| 948 | /* TODO: Recreate Picture and GlyphSet resources */ |
| 949 | } |
| 950 | else if ((type & TypeMask) == (PictureType & TypeMask)) { |
| 951 | /* Picture resources are created when windows are created */ |
| 952 | } |
| 953 | else if ((type & TypeMask) == (GlyphSetType & TypeMask)) { |
| 954 | dmxBEFreeGlyphSet(pScreen, (GlyphSetPtr) value); |
| 955 | #endif |
| 956 | } |
| 957 | else { |
| 958 | /* Other resource types??? */ |
| 959 | } |
| 960 | } |
| 961 | |
| 962 | /** Create window hierachy on back-end server. The window tree is |
| 963 | * created in a special order (bottom most subwindow first) so that the |
| 964 | * #dmxCreateNonRootWindow() function does not need to recursively call |
| 965 | * itself to create each window's parents. This is required so that we |
| 966 | * have the opportunity to create each window's border and background |
| 967 | * pixmaps (where appropriate) before the window is created. */ |
| 968 | static void |
| 969 | dmxBECreateWindowTree(int idx) |
| 970 | { |
| 971 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 972 | WindowPtr pRoot = screenInfo.screens[idx]->root; |
| 973 | dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pRoot); |
| 974 | WindowPtr pWin; |
| 975 | |
| 976 | /* Create the pixmaps associated with the root window */ |
| 977 | if (!pRoot->borderIsPixel) { |
| 978 | dmxBECreatePixmap(pRoot->border.pixmap); |
| 979 | dmxBERestorePixmap(pRoot->border.pixmap); |
| 980 | } |
| 981 | if (pRoot->backgroundState == BackgroundPixmap) { |
| 982 | dmxBECreatePixmap(pRoot->background.pixmap); |
| 983 | dmxBERestorePixmap(pRoot->background.pixmap); |
| 984 | } |
| 985 | |
| 986 | /* Create root window first */ |
| 987 | dmxScreen->rootWin = pWinPriv->window = dmxCreateRootWindow(pRoot); |
| 988 | XMapWindow(dmxScreen->beDisplay, dmxScreen->rootWin); |
| 989 | |
| 990 | pWin = pRoot->lastChild; |
| 991 | while (pWin) { |
| 992 | pWinPriv = DMX_GET_WINDOW_PRIV(pWin); |
| 993 | |
| 994 | /* Create the pixmaps regardless of whether or not the |
| 995 | * window is created or not due to lazy window creation. |
| 996 | */ |
| 997 | if (!pWin->borderIsPixel) { |
| 998 | dmxBECreatePixmap(pWin->border.pixmap); |
| 999 | dmxBERestorePixmap(pWin->border.pixmap); |
| 1000 | } |
| 1001 | if (pWin->backgroundState == BackgroundPixmap) { |
| 1002 | dmxBECreatePixmap(pWin->background.pixmap); |
| 1003 | dmxBERestorePixmap(pWin->background.pixmap); |
| 1004 | } |
| 1005 | |
| 1006 | /* Reset the window attributes */ |
| 1007 | dmxGetDefaultWindowAttributes(pWin, &pWinPriv->cmap, &pWinPriv->visual); |
| 1008 | |
| 1009 | /* Create the window */ |
| 1010 | if (pWinPriv->mapped && !pWinPriv->offscreen) |
| 1011 | dmxCreateAndRealizeWindow(pWin, TRUE); |
| 1012 | |
| 1013 | /* Next, create the bottom-most child */ |
| 1014 | if (pWin->lastChild) { |
| 1015 | pWin = pWin->lastChild; |
| 1016 | continue; |
| 1017 | } |
| 1018 | |
| 1019 | /* If the window has no children, move on to the next higher window */ |
| 1020 | while (!pWin->prevSib && (pWin != pRoot)) |
| 1021 | pWin = pWin->parent; |
| 1022 | |
| 1023 | if (pWin->prevSib) { |
| 1024 | pWin = pWin->prevSib; |
| 1025 | continue; |
| 1026 | } |
| 1027 | |
| 1028 | /* When we reach the root window, we are finished */ |
| 1029 | if (pWin == pRoot) |
| 1030 | break; |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | /* Refresh screen by generating exposure events for all windows */ |
| 1035 | static void |
| 1036 | dmxForceExposures(int idx) |
| 1037 | { |
| 1038 | ScreenPtr pScreen = screenInfo.screens[idx]; |
| 1039 | WindowPtr pRoot = pScreen->root; |
| 1040 | Bool anyMarked = FALSE; |
| 1041 | WindowPtr pChild; |
| 1042 | |
| 1043 | for (pChild = pRoot->firstChild; pChild; pChild = pChild->nextSib) |
| 1044 | anyMarked |= pScreen->MarkOverlappedWindows(pChild, pChild, |
| 1045 | (WindowPtr *) NULL); |
| 1046 | if (anyMarked) { |
| 1047 | /* If any windows have been marked, set the root window's |
| 1048 | * clipList to be broken since it will be recalculated in |
| 1049 | * ValidateTree() |
| 1050 | */ |
| 1051 | RegionBreak(&pRoot->clipList); |
| 1052 | pScreen->ValidateTree(pRoot, NULL, VTBroken); |
| 1053 | pScreen->HandleExposures(pRoot); |
| 1054 | if (pScreen->PostValidateTree) |
| 1055 | pScreen->PostValidateTree(pRoot, NULL, VTBroken); |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | /** Compare the new and old screens to see if they are compatible. */ |
| 1060 | static Bool |
| 1061 | dmxCompareScreens(DMXScreenInfo * new, DMXScreenInfo * old) |
| 1062 | { |
| 1063 | int i; |
| 1064 | |
| 1065 | if (new->beWidth != old->beWidth) |
| 1066 | return FALSE; |
| 1067 | if (new->beHeight != old->beHeight) |
| 1068 | return FALSE; |
| 1069 | if (new->beDepth != old->beDepth) |
| 1070 | return FALSE; |
| 1071 | if (new->beBPP != old->beBPP) |
| 1072 | return FALSE; |
| 1073 | |
| 1074 | if (new->beNumDepths != old->beNumDepths) |
| 1075 | return FALSE; |
| 1076 | for (i = 0; i < old->beNumDepths; i++) |
| 1077 | if (new->beDepths[i] != old->beDepths[i]) |
| 1078 | return FALSE; |
| 1079 | |
| 1080 | if (new->beNumPixmapFormats != old->beNumPixmapFormats) |
| 1081 | return FALSE; |
| 1082 | for (i = 0; i < old->beNumPixmapFormats; i++) { |
| 1083 | if (new->bePixmapFormats[i].depth != old->bePixmapFormats[i].depth) |
| 1084 | return FALSE; |
| 1085 | if (new->bePixmapFormats[i].bits_per_pixel != |
| 1086 | old->bePixmapFormats[i].bits_per_pixel) |
| 1087 | return FALSE; |
| 1088 | if (new->bePixmapFormats[i].scanline_pad != |
| 1089 | old->bePixmapFormats[i].scanline_pad) |
| 1090 | return FALSE; |
| 1091 | } |
| 1092 | |
| 1093 | if (new->beNumVisuals != old->beNumVisuals) |
| 1094 | return FALSE; |
| 1095 | for (i = 0; i < old->beNumVisuals; i++) { |
| 1096 | if (new->beVisuals[i].visualid != old->beVisuals[i].visualid) |
| 1097 | return FALSE; |
| 1098 | if (new->beVisuals[i].screen != old->beVisuals[i].screen) |
| 1099 | return FALSE; |
| 1100 | if (new->beVisuals[i].depth != old->beVisuals[i].depth) |
| 1101 | return FALSE; |
| 1102 | if (new->beVisuals[i].class != old->beVisuals[i].class) |
| 1103 | return FALSE; |
| 1104 | if (new->beVisuals[i].red_mask != old->beVisuals[i].red_mask) |
| 1105 | return FALSE; |
| 1106 | if (new->beVisuals[i].green_mask != old->beVisuals[i].green_mask) |
| 1107 | return FALSE; |
| 1108 | if (new->beVisuals[i].blue_mask != old->beVisuals[i].blue_mask) |
| 1109 | return FALSE; |
| 1110 | if (new->beVisuals[i].colormap_size != old->beVisuals[i].colormap_size) |
| 1111 | return FALSE; |
| 1112 | if (new->beVisuals[i].bits_per_rgb != old->beVisuals[i].bits_per_rgb) |
| 1113 | return FALSE; |
| 1114 | } |
| 1115 | |
| 1116 | if (new->beDefVisualIndex != old->beDefVisualIndex) |
| 1117 | return FALSE; |
| 1118 | |
| 1119 | return TRUE; |
| 1120 | } |
| 1121 | |
| 1122 | /** Restore Render's picture */ |
| 1123 | static void |
| 1124 | dmxBERestoreRenderPict(pointer value, XID id, pointer n) |
| 1125 | { |
| 1126 | PicturePtr pPicture = value; /* The picture */ |
| 1127 | DrawablePtr pDraw = pPicture->pDrawable; /* The picture's drawable */ |
| 1128 | int scrnNum = (uintptr_t) n; |
| 1129 | |
| 1130 | if (pDraw->pScreen->myNum != scrnNum) { |
| 1131 | /* Picture not on the screen we are restoring */ |
| 1132 | return; |
| 1133 | } |
| 1134 | |
| 1135 | if (pDraw->type == DRAWABLE_PIXMAP) { |
| 1136 | PixmapPtr pPixmap = (PixmapPtr) pDraw; |
| 1137 | |
| 1138 | /* Create and restore the pixmap drawable */ |
| 1139 | dmxBECreatePixmap(pPixmap); |
| 1140 | dmxBERestorePixmap(pPixmap); |
| 1141 | } |
| 1142 | |
| 1143 | dmxBECreatePicture(pPicture); |
| 1144 | } |
| 1145 | |
| 1146 | /** Restore Render's glyphs */ |
| 1147 | static void |
| 1148 | dmxBERestoreRenderGlyph(pointer value, XID id, pointer n) |
| 1149 | { |
| 1150 | GlyphSetPtr glyphSet = value; |
| 1151 | int scrnNum = (uintptr_t) n; |
| 1152 | dmxGlyphPrivPtr glyphPriv = DMX_GET_GLYPH_PRIV(glyphSet); |
| 1153 | DMXScreenInfo *dmxScreen = &dmxScreens[scrnNum]; |
| 1154 | GlyphRefPtr table; |
| 1155 | char *images; |
| 1156 | Glyph *gids; |
| 1157 | XGlyphInfo *glyphs; |
| 1158 | char *pos; |
| 1159 | int beret; |
| 1160 | int len_images = 0; |
| 1161 | int i; |
| 1162 | int ctr; |
| 1163 | |
| 1164 | if (glyphPriv->glyphSets[scrnNum]) { |
| 1165 | /* Only restore glyphs on the screen we are attaching */ |
| 1166 | return; |
| 1167 | } |
| 1168 | |
| 1169 | /* First we must create the glyph set on the backend. */ |
| 1170 | if ((beret = dmxBECreateGlyphSet(scrnNum, glyphSet)) != Success) { |
| 1171 | dmxLog(dmxWarning, |
| 1172 | "\tdmxBERestoreRenderGlyph failed to create glyphset!\n"); |
| 1173 | return; |
| 1174 | } |
| 1175 | |
| 1176 | /* Now for the complex part, restore the glyph data */ |
| 1177 | table = glyphSet->hash.table; |
| 1178 | |
| 1179 | /* We need to know how much memory to allocate for this part */ |
| 1180 | for (i = 0; i < glyphSet->hash.hashSet->size; i++) { |
| 1181 | GlyphRefPtr gr = &table[i]; |
| 1182 | GlyphPtr gl = gr->glyph; |
| 1183 | |
| 1184 | if (!gl || gl == DeletedGlyph) |
| 1185 | continue; |
| 1186 | len_images += gl->size - sizeof(gl->info); |
| 1187 | } |
| 1188 | |
| 1189 | /* Now allocate the memory we need */ |
| 1190 | images = calloc(len_images, sizeof(char)); |
| 1191 | gids = malloc(glyphSet->hash.tableEntries * sizeof(Glyph)); |
| 1192 | glyphs = malloc(glyphSet->hash.tableEntries * sizeof(XGlyphInfo)); |
| 1193 | |
| 1194 | pos = images; |
| 1195 | ctr = 0; |
| 1196 | |
| 1197 | /* Fill the allocated memory with the proper data */ |
| 1198 | for (i = 0; i < glyphSet->hash.hashSet->size; i++) { |
| 1199 | GlyphRefPtr gr = &table[i]; |
| 1200 | GlyphPtr gl = gr->glyph; |
| 1201 | |
| 1202 | if (!gl || gl == DeletedGlyph) |
| 1203 | continue; |
| 1204 | |
| 1205 | /* First lets put the data into gids */ |
| 1206 | gids[ctr] = gr->signature; |
| 1207 | |
| 1208 | /* Next do the glyphs data structures */ |
| 1209 | glyphs[ctr].width = gl->info.width; |
| 1210 | glyphs[ctr].height = gl->info.height; |
| 1211 | glyphs[ctr].x = gl->info.x; |
| 1212 | glyphs[ctr].y = gl->info.y; |
| 1213 | glyphs[ctr].xOff = gl->info.xOff; |
| 1214 | glyphs[ctr].yOff = gl->info.yOff; |
| 1215 | |
| 1216 | /* Copy the images from the DIX's data into the buffer */ |
| 1217 | memcpy(pos, gl + 1, gl->size - sizeof(gl->info)); |
| 1218 | pos += gl->size - sizeof(gl->info); |
| 1219 | ctr++; |
| 1220 | } |
| 1221 | |
| 1222 | /* Now restore the glyph data */ |
| 1223 | XRenderAddGlyphs(dmxScreen->beDisplay, glyphPriv->glyphSets[scrnNum], |
| 1224 | gids, glyphs, glyphSet->hash.tableEntries, images, |
| 1225 | len_images); |
| 1226 | |
| 1227 | /* Clean up */ |
| 1228 | free(images); |
| 1229 | free(gids); |
| 1230 | free(glyphs); |
| 1231 | } |
| 1232 | |
| 1233 | /** Reattach previously detached back-end screen. */ |
| 1234 | int |
| 1235 | dmxAttachScreen(int idx, DMXScreenAttributesPtr attr) |
| 1236 | { |
| 1237 | ScreenPtr pScreen; |
| 1238 | DMXScreenInfo *dmxScreen; |
| 1239 | CARD32 scrnNum = idx; |
| 1240 | DMXScreenInfo oldDMXScreen; |
| 1241 | int i; |
| 1242 | |
| 1243 | /* Return failure if dynamic addition/removal of screens is disabled */ |
| 1244 | if (!dmxAddRemoveScreens) { |
| 1245 | dmxLog(dmxWarning, |
| 1246 | "Attempting to add a screen, but the AddRemoveScreen\n"); |
| 1247 | dmxLog(dmxWarning, |
| 1248 | "extension has not been enabled. To enable this extension\n"); |
| 1249 | dmxLog(dmxWarning, |
| 1250 | "add the \"-addremovescreens\" option either to the command\n"); |
| 1251 | dmxLog(dmxWarning, "line or in the configuration file.\n"); |
| 1252 | return 1; |
| 1253 | } |
| 1254 | |
| 1255 | /* Cannot add a screen that does not exist */ |
| 1256 | if (idx < 0 || idx >= dmxNumScreens) |
| 1257 | return 1; |
| 1258 | pScreen = screenInfo.screens[idx]; |
| 1259 | dmxScreen = &dmxScreens[idx]; |
| 1260 | |
| 1261 | /* Cannot attach to a screen that is already opened */ |
| 1262 | if (dmxScreen->beDisplay) { |
| 1263 | dmxLog(dmxWarning, |
| 1264 | "Attempting to add screen #%d but a screen already exists\n", |
| 1265 | idx); |
| 1266 | return 1; |
| 1267 | } |
| 1268 | |
| 1269 | dmxLogOutput(dmxScreen, "Attaching screen #%d\n", idx); |
| 1270 | |
| 1271 | /* Save old info */ |
| 1272 | oldDMXScreen = *dmxScreen; |
| 1273 | |
| 1274 | /* Copy the name to the new screen */ |
| 1275 | dmxScreen->name = strdup(attr->displayName); |
| 1276 | |
| 1277 | /* Open display and get all of the screen info */ |
| 1278 | if (!dmxOpenDisplay(dmxScreen)) { |
| 1279 | dmxLog(dmxWarning, |
| 1280 | "dmxOpenDisplay: Unable to open display %s\n", dmxScreen->name); |
| 1281 | |
| 1282 | /* Restore the old screen */ |
| 1283 | *dmxScreen = oldDMXScreen; |
| 1284 | return 1; |
| 1285 | } |
| 1286 | |
| 1287 | dmxSetErrorHandler(dmxScreen); |
| 1288 | dmxCheckForWM(dmxScreen); |
| 1289 | dmxGetScreenAttribs(dmxScreen); |
| 1290 | |
| 1291 | if (!dmxGetVisualInfo(dmxScreen)) { |
| 1292 | dmxLog(dmxWarning, "dmxGetVisualInfo: No matching visuals found\n"); |
| 1293 | XFree(dmxScreen->beVisuals); |
| 1294 | XCloseDisplay(dmxScreen->beDisplay); |
| 1295 | |
| 1296 | /* Restore the old screen */ |
| 1297 | *dmxScreen = oldDMXScreen; |
| 1298 | return 1; |
| 1299 | } |
| 1300 | |
| 1301 | dmxGetColormaps(dmxScreen); |
| 1302 | dmxGetPixmapFormats(dmxScreen); |
| 1303 | |
| 1304 | /* Verify that the screen to be added has the same info as the |
| 1305 | * previously added screen. */ |
| 1306 | if (!dmxCompareScreens(dmxScreen, &oldDMXScreen)) { |
| 1307 | dmxLog(dmxWarning, |
| 1308 | "New screen data (%s) does not match previously\n", |
| 1309 | dmxScreen->name); |
| 1310 | dmxLog(dmxWarning, "attached screen data (%s)\n", oldDMXScreen.name); |
| 1311 | dmxLog(dmxWarning, |
| 1312 | "All data must match in order to attach to screen #%d\n", idx); |
| 1313 | XFree(dmxScreen->beVisuals); |
| 1314 | XFree(dmxScreen->beDepths); |
| 1315 | XFree(dmxScreen->bePixmapFormats); |
| 1316 | XCloseDisplay(dmxScreen->beDisplay); |
| 1317 | |
| 1318 | /* Restore the old screen */ |
| 1319 | *dmxScreen = oldDMXScreen; |
| 1320 | return 1; |
| 1321 | } |
| 1322 | |
| 1323 | /* Initialize the BE screen resources */ |
| 1324 | dmxBEScreenInit(screenInfo.screens[idx]); |
| 1325 | |
| 1326 | /* TODO: Handle GLX visual initialization. GLXProxy needs to be |
| 1327 | * updated to handle dynamic addition/removal of screens. */ |
| 1328 | |
| 1329 | /* Create default stipple */ |
| 1330 | dmxBECreatePixmap(pScreen->PixmapPerDepth[0]); |
| 1331 | dmxBERestorePixmap(pScreen->PixmapPerDepth[0]); |
| 1332 | |
| 1333 | /* Create the scratch GCs */ |
| 1334 | dmxBECreateScratchGCs(idx); |
| 1335 | |
| 1336 | /* Create the default font */ |
| 1337 | (void) dmxBELoadFont(pScreen, defaultFont); |
| 1338 | |
| 1339 | /* Create all resources that don't depend on windows */ |
| 1340 | for (i = currentMaxClients; --i >= 0;) |
| 1341 | if (clients[i]) |
| 1342 | FindAllClientResources(clients[i], dmxBECreateResources, |
| 1343 | (pointer) (uintptr_t) idx); |
| 1344 | |
| 1345 | /* Create window hierarchy (top down) */ |
| 1346 | dmxBECreateWindowTree(idx); |
| 1347 | |
| 1348 | /* Restore the picture state for RENDER */ |
| 1349 | for (i = currentMaxClients; --i >= 0;) |
| 1350 | if (clients[i]) |
| 1351 | FindClientResourcesByType(clients[i], PictureType, |
| 1352 | dmxBERestoreRenderPict, |
| 1353 | (pointer) (uintptr_t) idx); |
| 1354 | |
| 1355 | /* Restore the glyph state for RENDER */ |
| 1356 | for (i = currentMaxClients; --i >= 0;) |
| 1357 | if (clients[i]) |
| 1358 | FindClientResourcesByType(clients[i], GlyphSetType, |
| 1359 | dmxBERestoreRenderGlyph, |
| 1360 | (pointer) (uintptr_t) idx); |
| 1361 | |
| 1362 | /* Refresh screen by generating exposure events for all windows */ |
| 1363 | dmxForceExposures(idx); |
| 1364 | |
| 1365 | dmxSync(&dmxScreens[idx], TRUE); |
| 1366 | |
| 1367 | /* We used these to compare the old and new screens. They are no |
| 1368 | * longer needed since we have a newly attached screen, so we can |
| 1369 | * now free the old screen's resources. */ |
| 1370 | XFree(oldDMXScreen.beVisuals); |
| 1371 | XFree(oldDMXScreen.beDepths); |
| 1372 | XFree(oldDMXScreen.bePixmapFormats); |
| 1373 | /* TODO: should oldDMXScreen.name be freed?? */ |
| 1374 | |
| 1375 | #ifdef PANORAMIX |
| 1376 | if (!noPanoramiXExtension) |
| 1377 | return dmxConfigureScreenWindows(1, &scrnNum, attr, NULL); |
| 1378 | else |
| 1379 | #endif |
| 1380 | return 0; /* Success */ |
| 1381 | } |
| 1382 | |
| 1383 | /* |
| 1384 | * Resources that may have state on the BE server and need to be freed: |
| 1385 | * |
| 1386 | * RT_NONE |
| 1387 | * RT_WINDOW |
| 1388 | * RT_PIXMAP |
| 1389 | * RT_GC |
| 1390 | * RT_FONT |
| 1391 | * RT_CURSOR |
| 1392 | * RT_COLORMAP |
| 1393 | * RT_CMAPENTRY |
| 1394 | * RT_OTHERCLIENT |
| 1395 | * RT_PASSIVEGRAB |
| 1396 | * XRT_WINDOW |
| 1397 | * XRT_PIXMAP |
| 1398 | * XRT_GC |
| 1399 | * XRT_COLORMAP |
| 1400 | * XRT_PICTURE |
| 1401 | * PictureType |
| 1402 | * PictFormatType |
| 1403 | * GlyphSetType |
| 1404 | * ClientType |
| 1405 | * EventType |
| 1406 | * RT_INPUTCLIENT |
| 1407 | * XETrapType |
| 1408 | * RTCounter |
| 1409 | * RTAwait |
| 1410 | * RTAlarmClient |
| 1411 | * RT_XKBCLIENT |
| 1412 | * RTContext |
| 1413 | * TagResType |
| 1414 | * StalledResType |
| 1415 | * SecurityAuthorizationResType |
| 1416 | * RTEventClient |
| 1417 | * __glXContextRes |
| 1418 | * __glXClientRes |
| 1419 | * __glXPixmapRes |
| 1420 | * __glXWindowRes |
| 1421 | * __glXPbufferRes |
| 1422 | */ |
| 1423 | |
| 1424 | #ifdef PANORAMIX |
| 1425 | /** Search the Xinerama XRT_PIXMAP resources for the pixmap that needs |
| 1426 | * to have its image saved. */ |
| 1427 | static void |
| 1428 | dmxBEFindPixmapImage(pointer value, XID id, RESTYPE type, pointer p) |
| 1429 | { |
| 1430 | if ((type & TypeMask) == (XRT_PIXMAP & TypeMask)) { |
| 1431 | PixmapPtr pDst = (PixmapPtr) p; |
| 1432 | int idx = pDst->drawable.pScreen->myNum; |
| 1433 | PanoramiXRes *pXinPix = (PanoramiXRes *) value; |
| 1434 | PixmapPtr pPix; |
| 1435 | int i; |
| 1436 | |
| 1437 | dixLookupResourceByType((pointer *) &pPix, pXinPix->info[idx].id, |
| 1438 | RT_PIXMAP, NullClient, DixUnknownAccess); |
| 1439 | if (pPix != pDst) |
| 1440 | return; /* Not a match.... Next! */ |
| 1441 | |
| 1442 | FOR_NSCREENS(i) { |
| 1443 | PixmapPtr pSrc; |
| 1444 | dmxPixPrivPtr pSrcPriv = NULL; |
| 1445 | |
| 1446 | if (i == idx) |
| 1447 | continue; /* Self replication is bad */ |
| 1448 | |
| 1449 | dixLookupResourceByType((pointer *) &pSrc, pXinPix->info[i].id, |
| 1450 | RT_PIXMAP, NullClient, DixUnknownAccess); |
| 1451 | pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc); |
| 1452 | if (pSrcPriv->pixmap) { |
| 1453 | FoundPixImage = True; |
| 1454 | return; |
| 1455 | } |
| 1456 | } |
| 1457 | } |
| 1458 | } |
| 1459 | #endif |
| 1460 | |
| 1461 | /** Save the pixmap image only when there is not another screen with |
| 1462 | * that pixmap from which the image can be read when the screen is |
| 1463 | * reattached. To do this, we first try to find a pixmap on another |
| 1464 | * screen corresponding to the one we are trying to save. If we find |
| 1465 | * one, then we do not need to save the image data since during |
| 1466 | * reattachment, the image data can be read from that other pixmap. |
| 1467 | * However, if we do not find one, then we need to save the image data. |
| 1468 | * The common case for these are for the default stipple and root |
| 1469 | * tile. */ |
| 1470 | static void |
| 1471 | dmxBESavePixmap(PixmapPtr pPixmap) |
| 1472 | { |
| 1473 | #ifdef PANORAMIX |
| 1474 | int i; |
| 1475 | |
| 1476 | /* If Xinerama is not active, there's nothing we can do (see comment |
| 1477 | * in #else below for more info). */ |
| 1478 | if (noPanoramiXExtension) |
| 1479 | return; |
| 1480 | |
| 1481 | FoundPixImage = False; |
| 1482 | for (i = currentMaxClients; --i >= 0;) |
| 1483 | if (clients[i]) |
| 1484 | FindAllClientResources(clients[i], dmxBEFindPixmapImage, |
| 1485 | (pointer) pPixmap); |
| 1486 | |
| 1487 | /* Save the image only if there is no other screens that have a |
| 1488 | * pixmap that corresponds to the one we are trying to save. */ |
| 1489 | if (!FoundPixImage) { |
| 1490 | dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap); |
| 1491 | |
| 1492 | if (!pPixPriv->detachedImage) { |
| 1493 | ScreenPtr pScreen = pPixmap->drawable.pScreen; |
| 1494 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 1495 | |
| 1496 | pPixPriv->detachedImage = XGetImage(dmxScreen->beDisplay, |
| 1497 | pPixPriv->pixmap, |
| 1498 | 0, 0, |
| 1499 | pPixmap->drawable.width, |
| 1500 | pPixmap->drawable.height, |
| 1501 | -1, ZPixmap); |
| 1502 | if (!pPixPriv->detachedImage) |
| 1503 | dmxLog(dmxWarning, "Cannot save pixmap image\n"); |
| 1504 | } |
| 1505 | } |
| 1506 | #else |
| 1507 | /* NOTE: The only time there is a pixmap on another screen that |
| 1508 | * corresponds to the one we are trying to save is when Xinerama is |
| 1509 | * active. Otherwise, the pixmap image data is only stored on a |
| 1510 | * single screen, which means that once it is detached, that data is |
| 1511 | * lost. We could save the data here, but then that would require |
| 1512 | * us to implement the ability for Xdmx to keep the pixmap up to |
| 1513 | * date while the screen is detached, which is beyond the scope of |
| 1514 | * the current project. */ |
| 1515 | return; |
| 1516 | #endif |
| 1517 | } |
| 1518 | |
| 1519 | /** Destroy resources on the back-end server. This function is called |
| 1520 | * from #dmxDetachScreen() via the dix layer's FindAllResources |
| 1521 | * function. It walks all resources, compares them to the screen |
| 1522 | * number passed in as \a n and calls the appropriate DMX function to |
| 1523 | * free the associated resource on the back-end server. */ |
| 1524 | static void |
| 1525 | dmxBEDestroyResources(pointer value, XID id, RESTYPE type, pointer n) |
| 1526 | { |
| 1527 | int scrnNum = (uintptr_t) n; |
| 1528 | ScreenPtr pScreen = screenInfo.screens[scrnNum]; |
| 1529 | |
| 1530 | if ((type & TypeMask) == (RT_WINDOW & TypeMask)) { |
| 1531 | /* Window resources are destroyed below in dmxBEDestroyWindowTree */ |
| 1532 | } |
| 1533 | else if ((type & TypeMask) == (RT_PIXMAP & TypeMask)) { |
| 1534 | PixmapPtr pPix = value; |
| 1535 | |
| 1536 | if (pPix->drawable.pScreen->myNum == scrnNum) { |
| 1537 | dmxBESavePixmap(pPix); |
| 1538 | dmxBEFreePixmap(pPix); |
| 1539 | } |
| 1540 | } |
| 1541 | else if ((type & TypeMask) == (RT_GC & TypeMask)) { |
| 1542 | GCPtr pGC = value; |
| 1543 | |
| 1544 | if (pGC->pScreen->myNum == scrnNum) |
| 1545 | dmxBEFreeGC(pGC); |
| 1546 | } |
| 1547 | else if ((type & TypeMask) == (RT_FONT & TypeMask)) { |
| 1548 | dmxBEFreeFont(pScreen, (FontPtr) value); |
| 1549 | } |
| 1550 | else if ((type & TypeMask) == (RT_CURSOR & TypeMask)) { |
| 1551 | dmxBEFreeCursor(pScreen, (CursorPtr) value); |
| 1552 | } |
| 1553 | else if ((type & TypeMask) == (RT_COLORMAP & TypeMask)) { |
| 1554 | ColormapPtr pCmap = value; |
| 1555 | |
| 1556 | if (pCmap->pScreen->myNum == scrnNum) |
| 1557 | dmxBEFreeColormap((ColormapPtr) value); |
| 1558 | } |
| 1559 | else if ((type & TypeMask) == (PictureType & TypeMask)) { |
| 1560 | PicturePtr pPict = value; |
| 1561 | |
| 1562 | if (pPict->pDrawable->pScreen->myNum == scrnNum) { |
| 1563 | /* Free the pixmaps on the backend if needed */ |
| 1564 | if (pPict->pDrawable->type == DRAWABLE_PIXMAP) { |
| 1565 | PixmapPtr pPixmap = (PixmapPtr) (pPict->pDrawable); |
| 1566 | |
| 1567 | dmxBESavePixmap(pPixmap); |
| 1568 | dmxBEFreePixmap(pPixmap); |
| 1569 | } |
| 1570 | dmxBEFreePicture((PicturePtr) value); |
| 1571 | } |
| 1572 | } |
| 1573 | else if ((type & TypeMask) == (GlyphSetType & TypeMask)) { |
| 1574 | dmxBEFreeGlyphSet(pScreen, (GlyphSetPtr) value); |
| 1575 | } |
| 1576 | else { |
| 1577 | /* Other resource types??? */ |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | /** Destroy the scratch GCs that are created per depth. */ |
| 1582 | static void |
| 1583 | dmxBEDestroyScratchGCs(int scrnNum) |
| 1584 | { |
| 1585 | ScreenPtr pScreen = screenInfo.screens[scrnNum]; |
| 1586 | GCPtr *ppGC = pScreen->GCperDepth; |
| 1587 | int i; |
| 1588 | |
| 1589 | for (i = 0; i <= pScreen->numDepths; i++) |
| 1590 | dmxBEFreeGC(ppGC[i]); |
| 1591 | } |
| 1592 | |
| 1593 | /** Destroy window hierachy on back-end server. To ensure that all |
| 1594 | * XDestroyWindow() calls succeed, they must be performed in a bottom |
| 1595 | * up order so that windows are not destroyed before their children. |
| 1596 | * XDestroyWindow(), which is called from #dmxBEDestroyWindow(), will |
| 1597 | * destroy a window as well as all of it's children. */ |
| 1598 | static void |
| 1599 | dmxBEDestroyWindowTree(int idx) |
| 1600 | { |
| 1601 | WindowPtr pWin = screenInfo.screens[idx]->root; |
| 1602 | WindowPtr pChild = pWin; |
| 1603 | |
| 1604 | while (1) { |
| 1605 | if (pChild->firstChild) { |
| 1606 | pChild = pChild->firstChild; |
| 1607 | continue; |
| 1608 | } |
| 1609 | |
| 1610 | /* Destroy the window */ |
| 1611 | dmxBEDestroyWindow(pChild); |
| 1612 | |
| 1613 | /* Make sure we destroy the window's border and background |
| 1614 | * pixmaps if they exist */ |
| 1615 | if (!pChild->borderIsPixel) { |
| 1616 | dmxBESavePixmap(pChild->border.pixmap); |
| 1617 | dmxBEFreePixmap(pChild->border.pixmap); |
| 1618 | } |
| 1619 | if (pChild->backgroundState == BackgroundPixmap) { |
| 1620 | dmxBESavePixmap(pChild->background.pixmap); |
| 1621 | dmxBEFreePixmap(pChild->background.pixmap); |
| 1622 | } |
| 1623 | |
| 1624 | while (!pChild->nextSib && (pChild != pWin)) { |
| 1625 | pChild = pChild->parent; |
| 1626 | dmxBEDestroyWindow(pChild); |
| 1627 | if (!pChild->borderIsPixel) { |
| 1628 | dmxBESavePixmap(pChild->border.pixmap); |
| 1629 | dmxBEFreePixmap(pChild->border.pixmap); |
| 1630 | } |
| 1631 | if (pChild->backgroundState == BackgroundPixmap) { |
| 1632 | dmxBESavePixmap(pChild->background.pixmap); |
| 1633 | dmxBEFreePixmap(pChild->background.pixmap); |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | if (pChild == pWin) |
| 1638 | break; |
| 1639 | |
| 1640 | pChild = pChild->nextSib; |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | /** Detach back-end screen. */ |
| 1645 | int |
| 1646 | dmxDetachScreen(int idx) |
| 1647 | { |
| 1648 | DMXScreenInfo *dmxScreen = &dmxScreens[idx]; |
| 1649 | int i; |
| 1650 | |
| 1651 | /* Return failure if dynamic addition/removal of screens is disabled */ |
| 1652 | if (!dmxAddRemoveScreens) { |
| 1653 | dmxLog(dmxWarning, |
| 1654 | "Attempting to remove a screen, but the AddRemoveScreen\n"); |
| 1655 | dmxLog(dmxWarning, |
| 1656 | "extension has not been enabled. To enable this extension\n"); |
| 1657 | dmxLog(dmxWarning, |
| 1658 | "add the \"-addremovescreens\" option either to the command\n"); |
| 1659 | dmxLog(dmxWarning, "line or in the configuration file.\n"); |
| 1660 | return 1; |
| 1661 | } |
| 1662 | |
| 1663 | /* Cannot remove a screen that does not exist */ |
| 1664 | if (idx < 0 || idx >= dmxNumScreens) |
| 1665 | return 1; |
| 1666 | |
| 1667 | /* Cannot detach from a screen that is not opened */ |
| 1668 | if (!dmxScreen->beDisplay) { |
| 1669 | dmxLog(dmxWarning, |
| 1670 | "Attempting to remove screen #%d but it has not been opened\n", |
| 1671 | idx); |
| 1672 | return 1; |
| 1673 | } |
| 1674 | |
| 1675 | dmxLogOutput(dmxScreen, "Detaching screen #%d\n", idx); |
| 1676 | |
| 1677 | /* Detach input */ |
| 1678 | dmxInputDetachAll(dmxScreen); |
| 1679 | |
| 1680 | /* Save all relevant state (TODO) */ |
| 1681 | |
| 1682 | /* Free all non-window resources related to this screen */ |
| 1683 | for (i = currentMaxClients; --i >= 0;) |
| 1684 | if (clients[i]) |
| 1685 | FindAllClientResources(clients[i], dmxBEDestroyResources, |
| 1686 | (pointer) (uintptr_t) idx); |
| 1687 | |
| 1688 | /* Free scratch GCs */ |
| 1689 | dmxBEDestroyScratchGCs(idx); |
| 1690 | |
| 1691 | /* Free window resources related to this screen */ |
| 1692 | dmxBEDestroyWindowTree(idx); |
| 1693 | |
| 1694 | /* Free default stipple */ |
| 1695 | dmxBESavePixmap(screenInfo.screens[idx]->PixmapPerDepth[0]); |
| 1696 | dmxBEFreePixmap(screenInfo.screens[idx]->PixmapPerDepth[0]); |
| 1697 | |
| 1698 | /* Free the remaining screen resources and close the screen */ |
| 1699 | dmxBECloseScreen(screenInfo.screens[idx]); |
| 1700 | |
| 1701 | /* Adjust the cursor boundaries (paints detached console window) */ |
| 1702 | dmxAdjustCursorBoundaries(); |
| 1703 | |
| 1704 | return 0; /* Success */ |
| 1705 | } |