| 1 | /* |
| 2 | * Copyright 2001-2004 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 | * Authors: |
| 30 | * Kevin E. Martin <kem@redhat.com> |
| 31 | * |
| 32 | */ |
| 33 | |
| 34 | /** \file |
| 35 | * This file provides support for GCs. */ |
| 36 | |
| 37 | #ifdef HAVE_DMX_CONFIG_H |
| 38 | #include <dmx-config.h> |
| 39 | #endif |
| 40 | |
| 41 | #include "dmx.h" |
| 42 | #include "dmxsync.h" |
| 43 | #include "dmxgc.h" |
| 44 | #include "dmxgcops.h" |
| 45 | #include "dmxpixmap.h" |
| 46 | #include "dmxfont.h" |
| 47 | |
| 48 | #include "gcstruct.h" |
| 49 | #include "pixmapstr.h" |
| 50 | #include "migc.h" |
| 51 | |
| 52 | static GCFuncs dmxGCFuncs = { |
| 53 | dmxValidateGC, |
| 54 | dmxChangeGC, |
| 55 | dmxCopyGC, |
| 56 | dmxDestroyGC, |
| 57 | dmxChangeClip, |
| 58 | dmxDestroyClip, |
| 59 | dmxCopyClip, |
| 60 | }; |
| 61 | |
| 62 | static GCOps dmxGCOps = { |
| 63 | dmxFillSpans, |
| 64 | dmxSetSpans, |
| 65 | dmxPutImage, |
| 66 | dmxCopyArea, |
| 67 | dmxCopyPlane, |
| 68 | dmxPolyPoint, |
| 69 | dmxPolylines, |
| 70 | dmxPolySegment, |
| 71 | dmxPolyRectangle, |
| 72 | dmxPolyArc, |
| 73 | dmxFillPolygon, |
| 74 | dmxPolyFillRect, |
| 75 | dmxPolyFillArc, |
| 76 | dmxPolyText8, |
| 77 | dmxPolyText16, |
| 78 | dmxImageText8, |
| 79 | dmxImageText16, |
| 80 | dmxImageGlyphBlt, |
| 81 | dmxPolyGlyphBlt, |
| 82 | dmxPushPixels |
| 83 | }; |
| 84 | |
| 85 | /** Initialize the GC on \a pScreen */ |
| 86 | Bool |
| 87 | dmxInitGC(ScreenPtr pScreen) |
| 88 | { |
| 89 | if (!dixRegisterPrivateKey |
| 90 | (&dmxGCPrivateKeyRec, PRIVATE_GC, sizeof(dmxGCPrivRec))) |
| 91 | return FALSE; |
| 92 | return TRUE; |
| 93 | } |
| 94 | |
| 95 | /** Create the GC on the back-end server. */ |
| 96 | void |
| 97 | dmxBECreateGC(ScreenPtr pScreen, GCPtr pGC) |
| 98 | { |
| 99 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 100 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 101 | int i; |
| 102 | |
| 103 | for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) { |
| 104 | if (pGC->depth == dmxScreen->bePixmapFormats[i].depth) { |
| 105 | unsigned long mask; |
| 106 | XGCValues gcvals; |
| 107 | |
| 108 | mask = GCGraphicsExposures; |
| 109 | gcvals.graphics_exposures = FALSE; |
| 110 | |
| 111 | /* Create GC in the back-end servers */ |
| 112 | pGCPriv->gc = XCreateGC(dmxScreen->beDisplay, |
| 113 | dmxScreen->scrnDefDrawables[i], |
| 114 | mask, &gcvals); |
| 115 | break; |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /** Create a graphics context on the back-end server associated /a pGC's |
| 121 | * screen. */ |
| 122 | Bool |
| 123 | dmxCreateGC(GCPtr pGC) |
| 124 | { |
| 125 | ScreenPtr pScreen = pGC->pScreen; |
| 126 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 127 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 128 | Bool ret; |
| 129 | |
| 130 | DMX_UNWRAP(CreateGC, dmxScreen, pScreen); |
| 131 | if ((ret = pScreen->CreateGC(pGC))) { |
| 132 | /* Save the old funcs */ |
| 133 | pGCPriv->funcs = pGC->funcs; |
| 134 | pGCPriv->ops = NULL; |
| 135 | |
| 136 | pGC->funcs = &dmxGCFuncs; |
| 137 | |
| 138 | if (dmxScreen->beDisplay) { |
| 139 | dmxBECreateGC(pScreen, pGC); |
| 140 | } |
| 141 | else { |
| 142 | pGCPriv->gc = NULL; |
| 143 | } |
| 144 | |
| 145 | /* Check for "magic special case" |
| 146 | * 1. see CreateGC in dix/gc.c for more info |
| 147 | * 2. see dmxChangeGC for more info |
| 148 | */ |
| 149 | pGCPriv->msc = (!pGC->tileIsPixel && !pGC->tile.pixmap); |
| 150 | } |
| 151 | DMX_WRAP(CreateGC, dmxCreateGC, dmxScreen, pScreen); |
| 152 | |
| 153 | return ret; |
| 154 | } |
| 155 | |
| 156 | /** Validate a graphics context, \a pGC, locally in the DMX server and |
| 157 | * recompute the composite clip, if necessary. */ |
| 158 | void |
| 159 | dmxValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable) |
| 160 | { |
| 161 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 162 | |
| 163 | DMX_GC_FUNC_PROLOGUE(pGC); |
| 164 | #if 0 |
| 165 | pGC->funcs->ValidateGC(pGC, changes, pDrawable); |
| 166 | #endif |
| 167 | |
| 168 | if (pDrawable->type == DRAWABLE_WINDOW || |
| 169 | pDrawable->type == DRAWABLE_PIXMAP) { |
| 170 | /* Save the old ops, since we're about to change the ops in the |
| 171 | * epilogue. |
| 172 | */ |
| 173 | pGCPriv->ops = pGC->ops; |
| 174 | } |
| 175 | else { |
| 176 | pGCPriv->ops = NULL; |
| 177 | } |
| 178 | |
| 179 | /* If the client clip is different or moved OR the subwindowMode has |
| 180 | * changed OR the window's clip has changed since the last |
| 181 | * validation, then we need to recompute the composite clip. |
| 182 | */ |
| 183 | if ((changes & (GCClipXOrigin | |
| 184 | GCClipYOrigin | |
| 185 | GCClipMask | |
| 186 | GCSubwindowMode)) || |
| 187 | (pDrawable->serialNumber != |
| 188 | (pGC->serialNumber & DRAWABLE_SERIAL_BITS))) { |
| 189 | miComputeCompositeClip(pGC, pDrawable); |
| 190 | } |
| 191 | |
| 192 | DMX_GC_FUNC_EPILOGUE(pGC); |
| 193 | } |
| 194 | |
| 195 | /** Set the values in the graphics context on the back-end server |
| 196 | * associated with \a pGC's screen. */ |
| 197 | void |
| 198 | dmxChangeGC(GCPtr pGC, unsigned long mask) |
| 199 | { |
| 200 | ScreenPtr pScreen = pGC->pScreen; |
| 201 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 202 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 203 | XGCValues v; |
| 204 | |
| 205 | DMX_GC_FUNC_PROLOGUE(pGC); |
| 206 | #if 0 |
| 207 | pGC->funcs->ChangeGC(pGC, mask); |
| 208 | #endif |
| 209 | |
| 210 | /* Handle "magic special case" from CreateGC */ |
| 211 | if (pGCPriv->msc) { |
| 212 | /* The "magic special case" is used to handle the case where a |
| 213 | * foreground pixel is set when the GC is created so that a |
| 214 | * "pseudo default-tile" can be created and used in case the |
| 215 | * fillstyle was set to FillTiled. This specific case is tested |
| 216 | * in xtest (XCreateGC test #3). What has happened in dix by |
| 217 | * the time it reaches here is (1) the pGC->tile.pixel has been |
| 218 | * set to pGC->fgPixel and pGC->tileIsPixel is set, (2) if a |
| 219 | * tile has also been set, then pGC->tileIsPixel is unset and |
| 220 | * pGC->tile.pixmap is initialized; else, the default tile is |
| 221 | * created and pGC->tileIsPixel is unset and pGC->tile.pixmap is |
| 222 | * initialized to the "pseudo default-tile". In either case, |
| 223 | * pGC->tile.pixmap is set; however, in the "magic special case" |
| 224 | * the mask is not updated to allow us to detect that we should |
| 225 | * initialize the GCTile in the back-end server. Thus, we catch |
| 226 | * this case in dmxCreateGC and add GCTile to the mask here. |
| 227 | * Are there any cases that I've missed? |
| 228 | */ |
| 229 | |
| 230 | /* Make sure that the tile.pixmap is set, just in case the user |
| 231 | * set GCTile in the mask but forgot to set vals.pixmap |
| 232 | */ |
| 233 | if (pGC->tile.pixmap) |
| 234 | mask |= GCTile; |
| 235 | |
| 236 | /* This only happens once when the GC is created */ |
| 237 | pGCPriv->msc = FALSE; |
| 238 | } |
| 239 | |
| 240 | /* Update back-end server's gc */ |
| 241 | if (mask & GCFunction) |
| 242 | v.function = pGC->alu; |
| 243 | if (mask & GCPlaneMask) |
| 244 | v.plane_mask = pGC->planemask; |
| 245 | if (mask & GCForeground) |
| 246 | v.foreground = pGC->fgPixel; |
| 247 | if (mask & GCBackground) |
| 248 | v.background = pGC->bgPixel; |
| 249 | if (mask & GCLineWidth) |
| 250 | v.line_width = pGC->lineWidth; |
| 251 | if (mask & GCLineStyle) |
| 252 | v.line_style = pGC->lineStyle; |
| 253 | if (mask & GCCapStyle) |
| 254 | v.cap_style = pGC->capStyle; |
| 255 | if (mask & GCJoinStyle) |
| 256 | v.join_style = pGC->joinStyle; |
| 257 | if (mask & GCFillStyle) |
| 258 | v.fill_style = pGC->fillStyle; |
| 259 | if (mask & GCFillRule) |
| 260 | v.fill_rule = pGC->fillRule; |
| 261 | if (mask & GCTile) { |
| 262 | if (pGC->tileIsPixel) { |
| 263 | mask &= ~GCTile; |
| 264 | } |
| 265 | else { |
| 266 | dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pGC->tile.pixmap); |
| 267 | |
| 268 | v.tile = (Drawable) pPixPriv->pixmap; |
| 269 | } |
| 270 | } |
| 271 | if (mask & GCStipple) { |
| 272 | dmxPixPrivPtr pPixPriv = DMX_GET_PIXMAP_PRIV(pGC->stipple); |
| 273 | |
| 274 | v.stipple = (Drawable) pPixPriv->pixmap; |
| 275 | } |
| 276 | if (mask & GCTileStipXOrigin) |
| 277 | v.ts_x_origin = pGC->patOrg.x; |
| 278 | if (mask & GCTileStipYOrigin) |
| 279 | v.ts_y_origin = pGC->patOrg.y; |
| 280 | if (mask & GCFont) { |
| 281 | if (dmxScreen->beDisplay) { |
| 282 | dmxFontPrivPtr pFontPriv; |
| 283 | |
| 284 | pFontPriv = FontGetPrivate(pGC->font, dmxFontPrivateIndex); |
| 285 | v.font = pFontPriv->font[pScreen->myNum]->fid; |
| 286 | } |
| 287 | else { |
| 288 | mask &= ~GCFont; |
| 289 | } |
| 290 | } |
| 291 | if (mask & GCSubwindowMode) |
| 292 | v.subwindow_mode = pGC->subWindowMode; |
| 293 | |
| 294 | /* Graphics exposures are not needed on the back-ends since they can |
| 295 | be generated on the front-end thereby saving bandwidth. */ |
| 296 | if (mask & GCGraphicsExposures) |
| 297 | mask &= ~GCGraphicsExposures; |
| 298 | |
| 299 | if (mask & GCClipXOrigin) |
| 300 | v.clip_x_origin = pGC->clipOrg.x; |
| 301 | if (mask & GCClipYOrigin) |
| 302 | v.clip_y_origin = pGC->clipOrg.y; |
| 303 | if (mask & GCClipMask) |
| 304 | mask &= ~GCClipMask; /* See ChangeClip */ |
| 305 | if (mask & GCDashOffset) |
| 306 | v.dash_offset = pGC->dashOffset; |
| 307 | if (mask & GCDashList) { |
| 308 | mask &= ~GCDashList; |
| 309 | if (dmxScreen->beDisplay) |
| 310 | XSetDashes(dmxScreen->beDisplay, pGCPriv->gc, |
| 311 | pGC->dashOffset, (char *) pGC->dash, pGC->numInDashList); |
| 312 | } |
| 313 | if (mask & GCArcMode) |
| 314 | v.arc_mode = pGC->arcMode; |
| 315 | |
| 316 | if (mask && dmxScreen->beDisplay) { |
| 317 | XChangeGC(dmxScreen->beDisplay, pGCPriv->gc, mask, &v); |
| 318 | dmxSync(dmxScreen, FALSE); |
| 319 | } |
| 320 | |
| 321 | DMX_GC_FUNC_EPILOGUE(pGC); |
| 322 | } |
| 323 | |
| 324 | /** Copy \a pGCSrc to \a pGCDst on the back-end server associated with |
| 325 | * \a pGCSrc's screen. */ |
| 326 | void |
| 327 | dmxCopyGC(GCPtr pGCSrc, unsigned long changes, GCPtr pGCDst) |
| 328 | { |
| 329 | ScreenPtr pScreen = pGCSrc->pScreen; |
| 330 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 331 | dmxGCPrivPtr pGCSrcPriv = DMX_GET_GC_PRIV(pGCSrc); |
| 332 | dmxGCPrivPtr pGCDstPriv = DMX_GET_GC_PRIV(pGCDst); |
| 333 | |
| 334 | DMX_GC_FUNC_PROLOGUE(pGCDst); |
| 335 | pGCDst->funcs->CopyGC(pGCSrc, changes, pGCDst); |
| 336 | |
| 337 | /* Copy the GC on the back-end server */ |
| 338 | if (dmxScreen->beDisplay) |
| 339 | XCopyGC(dmxScreen->beDisplay, pGCSrcPriv->gc, changes, pGCDstPriv->gc); |
| 340 | |
| 341 | DMX_GC_FUNC_EPILOGUE(pGCDst); |
| 342 | } |
| 343 | |
| 344 | /** Free the \a pGC on the back-end server. */ |
| 345 | Bool |
| 346 | dmxBEFreeGC(GCPtr pGC) |
| 347 | { |
| 348 | ScreenPtr pScreen = pGC->pScreen; |
| 349 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 350 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 351 | |
| 352 | if (pGCPriv->gc) { |
| 353 | XFreeGC(dmxScreen->beDisplay, pGCPriv->gc); |
| 354 | pGCPriv->gc = NULL; |
| 355 | return TRUE; |
| 356 | } |
| 357 | |
| 358 | return FALSE; |
| 359 | } |
| 360 | |
| 361 | /** Destroy the graphics context, \a pGC and free the corresponding GC |
| 362 | * on the back-end server. */ |
| 363 | void |
| 364 | dmxDestroyGC(GCPtr pGC) |
| 365 | { |
| 366 | ScreenPtr pScreen = pGC->pScreen; |
| 367 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 368 | |
| 369 | DMX_GC_FUNC_PROLOGUE(pGC); |
| 370 | |
| 371 | /* Free the GC on the back-end server */ |
| 372 | if (dmxScreen->beDisplay) |
| 373 | dmxBEFreeGC(pGC); |
| 374 | |
| 375 | pGC->funcs->DestroyGC(pGC); |
| 376 | DMX_GC_FUNC_EPILOGUE(pGC); |
| 377 | } |
| 378 | |
| 379 | /** Change the clip rects for a GC. */ |
| 380 | void |
| 381 | dmxChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects) |
| 382 | { |
| 383 | ScreenPtr pScreen = pGC->pScreen; |
| 384 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 385 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 386 | XRectangle *pRects; |
| 387 | BoxPtr pBox; |
| 388 | int i, nRects; |
| 389 | |
| 390 | DMX_GC_FUNC_PROLOGUE(pGC); |
| 391 | pGC->funcs->ChangeClip(pGC, type, pvalue, nrects); |
| 392 | |
| 393 | /* Set the client clip on the back-end server */ |
| 394 | switch (pGC->clientClipType) { |
| 395 | case CT_NONE: |
| 396 | if (dmxScreen->beDisplay) |
| 397 | XSetClipMask(dmxScreen->beDisplay, pGCPriv->gc, None); |
| 398 | break; |
| 399 | |
| 400 | case CT_REGION: |
| 401 | if (dmxScreen->beDisplay) { |
| 402 | nRects = RegionNumRects((RegionPtr) pGC->clientClip); |
| 403 | pRects = malloc(nRects * sizeof(*pRects)); |
| 404 | pBox = RegionRects((RegionPtr) pGC->clientClip); |
| 405 | |
| 406 | for (i = 0; i < nRects; i++) { |
| 407 | pRects[i].x = pBox[i].x1; |
| 408 | pRects[i].y = pBox[i].y1; |
| 409 | pRects[i].width = pBox[i].x2 - pBox[i].x1; |
| 410 | pRects[i].height = pBox[i].y2 - pBox[i].y1; |
| 411 | } |
| 412 | |
| 413 | XSetClipRectangles(dmxScreen->beDisplay, pGCPriv->gc, |
| 414 | pGC->clipOrg.x, pGC->clipOrg.y, |
| 415 | pRects, nRects, Unsorted); |
| 416 | |
| 417 | free(pRects); |
| 418 | } |
| 419 | break; |
| 420 | |
| 421 | case CT_PIXMAP: |
| 422 | /* Condensed down to REGION in the mi code */ |
| 423 | break; |
| 424 | } |
| 425 | |
| 426 | DMX_GC_FUNC_EPILOGUE(pGC); |
| 427 | } |
| 428 | |
| 429 | /** Destroy a GC's clip rects. */ |
| 430 | void |
| 431 | dmxDestroyClip(GCPtr pGC) |
| 432 | { |
| 433 | ScreenPtr pScreen = pGC->pScreen; |
| 434 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 435 | dmxGCPrivPtr pGCPriv = DMX_GET_GC_PRIV(pGC); |
| 436 | |
| 437 | DMX_GC_FUNC_PROLOGUE(pGC); |
| 438 | pGC->funcs->DestroyClip(pGC); |
| 439 | |
| 440 | /* Set the client clip on the back-end server to None */ |
| 441 | if (dmxScreen->beDisplay) |
| 442 | XSetClipMask(dmxScreen->beDisplay, pGCPriv->gc, None); |
| 443 | |
| 444 | DMX_GC_FUNC_EPILOGUE(pGC); |
| 445 | } |
| 446 | |
| 447 | /** Copy a GC's clip rects. */ |
| 448 | void |
| 449 | dmxCopyClip(GCPtr pGCDst, GCPtr pGCSrc) |
| 450 | { |
| 451 | DMX_GC_FUNC_PROLOGUE(pGCDst); |
| 452 | pGCDst->funcs->CopyClip(pGCDst, pGCSrc); |
| 453 | DMX_GC_FUNC_EPILOGUE(pGCDst); |
| 454 | } |