repositories / deb_xorg-server.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e091a JB |
1 | /* |
| 2 | * | |
| 3 | * Copyright © 1998 Keith Packard | |
| 4 | * | |
| 5 | * Permission to use, copy, modify, distribute, and sell this software and its | |
| 6 | * documentation for any purpose is hereby granted without fee, provided that | |
| 7 | * the above copyright notice appear in all copies and that both that | |
| 8 | * copyright notice and this permission notice appear in supporting | |
| 9 | * documentation, and that the name of Keith Packard not be used in | |
| 10 | * advertising or publicity pertaining to distribution of the software without | |
| 11 | * specific, written prior permission. Keith Packard makes no | |
| 12 | * representations about the suitability of this software for any purpose. It | |
| 13 | * is provided "as is" without express or implied warranty. | |
| 14 | * | |
| 15 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
| 16 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
| 17 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
| 18 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
| 19 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
| 20 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
| 21 | * PERFORMANCE OF THIS SOFTWARE. | |
| 22 | */ | |
| 23 | ||
| 24 | #ifdef HAVE_DIX_CONFIG_H | |
| 25 | #include <dix-config.h> | |
| 26 | #endif | |
| 27 | ||
| 28 | #include "fb.h" | |
| 29 | #include <X11/fonts/fontstruct.h> | |
| 30 | #include "dixfontstr.h" | |
| 31 | ||
| 32 | Bool | |
| 33 | fbGlyphIn(RegionPtr pRegion, int x, int y, int width, int height) | |
| 34 | { | |
| 35 | BoxRec box; | |
| 36 | BoxPtr pExtents = RegionExtents(pRegion); | |
| 37 | ||
| 38 | /* | |
| 39 | * Check extents by hand to avoid 16 bit overflows | |
| 40 | */ | |
| 41 | if (x < (int) pExtents->x1) | |
| 42 | return FALSE; | |
| 43 | if ((int) pExtents->x2 < x + width) | |
| 44 | return FALSE; | |
| 45 | if (y < (int) pExtents->y1) | |
| 46 | return FALSE; | |
| 47 | if ((int) pExtents->y2 < y + height) | |
| 48 | return FALSE; | |
| 49 | box.x1 = x; | |
| 50 | box.x2 = x + width; | |
| 51 | box.y1 = y; | |
| 52 | box.y2 = y + height; | |
| 53 | return RegionContainsRect(pRegion, &box) == rgnIN; | |
| 54 | } | |
| 55 | ||
| 56 | #define WRITE1(d,n,fg) WRITE((d) + (n), (CARD8) fg) | |
| 57 | #define WRITE2(d,n,fg) WRITE((CARD16 *) &(d[n]), (CARD16) fg) | |
| 58 | #define WRITE4(d,n,fg) WRITE((CARD32 *) &(d[n]), (CARD32) fg) | |
| 59 | #if FB_UNIT == 6 && IMAGE_BYTE_ORDER == LSBFirst | |
| 60 | #define WRITE8(d) WRITE((FbBits *) &(d[0]), fg) | |
| 61 | #else | |
| 62 | #define WRITE8(d) WRITE4(d,0,_ABCA), WRITE4(d,4,_BCAB) | |
| 63 | #endif | |
| 64 | ||
| 65 | /* | |
| 66 | * This is a bit tricky, but it's brief. Write 12 bytes worth | |
| 67 | * of dest, which is four pixels, at a time. This gives constant | |
| 68 | * code for each pattern as they're always aligned the same | |
| 69 | * | |
| 70 | * a b c d a b c d a b c d bytes | |
| 71 | * A B C A B C A B C A B C pixels | |
| 72 | * | |
| 73 | * f0 f1 f2 | |
| 74 | * A B C A B C A B C A B C pixels LSB | |
| 75 | * C A B C A B C A B C A B pixels MSB | |
| 76 | * | |
| 77 | * LSB MSB | |
| 78 | * A f0 f1 | |
| 79 | * B f1 f2 | |
| 80 | * C f2 f0 | |
| 81 | * A B f0 f2 | |
| 82 | * B C f1 f0 | |
| 83 | * C A f2 f1 | |
| 84 | * A B C A f0 f1 | |
| 85 | * B C A B f1 f2 | |
| 86 | * C A B C f2 f0 | |
| 87 | */ | |
| 88 | ||
| 89 | #undef _A | |
| 90 | #undef _B | |
| 91 | #undef _C | |
| 92 | #undef _AB | |
| 93 | #undef _BC | |
| 94 | #undef _CA | |
| 95 | #undef _ABCA | |
| 96 | #undef _BCAB | |
| 97 | #undef _CABC | |
| 98 | ||
| 99 | #if IMAGE_BYTE_ORDER == MSBFirst | |
| 100 | #define _A f1 | |
| 101 | #define _B f2 | |
| 102 | #define _C f0 | |
| 103 | #define _AB f2 | |
| 104 | #define _BC f0 | |
| 105 | #define _CA f1 | |
| 106 | #define _ABCA f1 | |
| 107 | #define _BCAB f2 | |
| 108 | #define _CABC f0 | |
| 109 | #define CASE(a,b,c,d) ((a << 3) | (b << 2) | (c << 1) | d) | |
| 110 | #else | |
| 111 | #define _A f0 | |
| 112 | #define _B f1 | |
| 113 | #define _C f2 | |
| 114 | #define _AB f0 | |
| 115 | #define _BC f1 | |
| 116 | #define _CA f2 | |
| 117 | #define _ABCA f0 | |
| 118 | #define _BCAB f1 | |
| 119 | #define _CABC f2 | |
| 120 | #define CASE(a,b,c,d) (a | (b << 1) | (c << 2) | (d << 3)) | |
| 121 | #endif | |
| 122 | ||
| 123 | void | |
| 124 | fbGlyph24(FbBits * dstBits, | |
| 125 | FbStride dstStride, | |
| 126 | int dstBpp, FbStip * stipple, FbBits fg, int x, int height) | |
| 127 | { | |
| 128 | int lshift; | |
| 129 | FbStip bits; | |
| 130 | CARD8 *dstLine; | |
| 131 | CARD8 *dst; | |
| 132 | FbStip f0, f1, f2; | |
| 133 | int n; | |
| 134 | int shift; | |
| 135 | ||
| 136 | f0 = fg; | |
| 137 | f1 = FbRot24(f0, 16); | |
| 138 | f2 = FbRot24(f0, 8); | |
| 139 | ||
| 140 | dstLine = (CARD8 *) dstBits; | |
| 141 | dstLine += (x & ~3) * 3; | |
| 142 | dstStride *= (sizeof(FbBits) / sizeof(CARD8)); | |
| 143 | shift = x & 3; | |
| 144 | lshift = 4 - shift; | |
| 145 | while (height--) { | |
| 146 | bits = READ(stipple++); | |
| 147 | n = lshift; | |
| 148 | dst = dstLine; | |
| 149 | while (bits) { | |
| 150 | switch (FbStipMoveLsb(FbLeftStipBits(bits, n), 4, n)) { | |
| 151 | case CASE(0, 0, 0, 0): | |
| 152 | break; | |
| 153 | case CASE(1, 0, 0, 0): | |
| 154 | WRITE2(dst, 0, _AB); | |
| 155 | WRITE1(dst, 2, _C); | |
| 156 | break; | |
| 157 | case CASE(0, 1, 0, 0): | |
| 158 | WRITE1(dst, 3, _A); | |
| 159 | WRITE2(dst, 4, _BC); | |
| 160 | break; | |
| 161 | case CASE(1, 1, 0, 0): | |
| 162 | WRITE4(dst, 0, _ABCA); | |
| 163 | WRITE2(dst, 4, _BC); | |
| 164 | break; | |
| 165 | case CASE(0, 0, 1, 0): | |
| 166 | WRITE2(dst, 6, _AB); | |
| 167 | WRITE1(dst, 8, _C); | |
| 168 | break; | |
| 169 | case CASE(1, 0, 1, 0): | |
| 170 | WRITE2(dst, 0, _AB); | |
| 171 | WRITE1(dst, 2, _C); | |
| 172 | ||
| 173 | WRITE2(dst, 6, _AB); | |
| 174 | WRITE1(dst, 8, _C); | |
| 175 | break; | |
| 176 | case CASE(0, 1, 1, 0): | |
| 177 | WRITE1(dst, 3, _A); | |
| 178 | WRITE4(dst, 4, _BCAB); | |
| 179 | WRITE1(dst, 8, _C); | |
| 180 | break; | |
| 181 | case CASE(1, 1, 1, 0): | |
| 182 | WRITE8(dst); | |
| 183 | WRITE1(dst, 8, _C); | |
| 184 | break; | |
| 185 | case CASE(0, 0, 0, 1): | |
| 186 | WRITE1(dst, 9, _A); | |
| 187 | WRITE2(dst, 10, _BC); | |
| 188 | break; | |
| 189 | case CASE(1, 0, 0, 1): | |
| 190 | WRITE2(dst, 0, _AB); | |
| 191 | WRITE1(dst, 2, _C); | |
| 192 | ||
| 193 | WRITE1(dst, 9, _A); | |
| 194 | WRITE2(dst, 10, _BC); | |
| 195 | break; | |
| 196 | case CASE(0, 1, 0, 1): | |
| 197 | WRITE1(dst, 3, _A); | |
| 198 | WRITE2(dst, 4, _BC); | |
| 199 | ||
| 200 | WRITE1(dst, 9, _A); | |
| 201 | WRITE2(dst, 10, _BC); | |
| 202 | break; | |
| 203 | case CASE(1, 1, 0, 1): | |
| 204 | WRITE4(dst, 0, _ABCA); | |
| 205 | WRITE2(dst, 4, _BC); | |
| 206 | ||
| 207 | WRITE1(dst, 9, _A); | |
| 208 | WRITE2(dst, 10, _BC); | |
| 209 | break; | |
| 210 | case CASE(0, 0, 1, 1): | |
| 211 | WRITE2(dst, 6, _AB); | |
| 212 | WRITE4(dst, 8, _CABC); | |
| 213 | break; | |
| 214 | case CASE(1, 0, 1, 1): | |
| 215 | WRITE2(dst, 0, _AB); | |
| 216 | WRITE1(dst, 2, _C); | |
| 217 | ||
| 218 | WRITE2(dst, 6, _AB); | |
| 219 | WRITE4(dst, 8, _CABC); | |
| 220 | break; | |
| 221 | case CASE(0, 1, 1, 1): | |
| 222 | WRITE1(dst, 3, _A); | |
| 223 | WRITE4(dst, 4, _BCAB); | |
| 224 | WRITE4(dst, 8, _CABC); | |
| 225 | break; | |
| 226 | case CASE(1, 1, 1, 1): | |
| 227 | WRITE8(dst); | |
| 228 | WRITE4(dst, 8, _CABC); | |
| 229 | break; | |
| 230 | } | |
| 231 | bits = FbStipLeft(bits, n); | |
| 232 | n = 4; | |
| 233 | dst += 12; | |
| 234 | } | |
| 235 | dstLine += dstStride; | |
| 236 | } | |
| 237 | } | |
| 238 | ||
| 239 | void | |
| 240 | fbPolyGlyphBlt(DrawablePtr pDrawable, | |
| 241 | GCPtr pGC, | |
| 242 | int x, | |
| 243 | int y, | |
| 244 | unsigned int nglyph, CharInfoPtr * ppci, pointer pglyphBase) | |
| 245 | { | |
| 246 | FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); | |
| 247 | CharInfoPtr pci; | |
| 248 | unsigned char *pglyph; /* pointer bits in glyph */ | |
| 249 | int gx, gy; | |
| 250 | int gWidth, gHeight; /* width and height of glyph */ | |
| 251 | FbStride gStride; /* stride of glyph */ | |
| 252 | void (*glyph) (FbBits *, FbStride, int, FbStip *, FbBits, int, int); | |
| 253 | FbBits *dst = 0; | |
| 254 | FbStride dstStride = 0; | |
| 255 | int dstBpp = 0; | |
| 256 | int dstXoff = 0, dstYoff = 0; | |
| 257 | ||
| 258 | glyph = 0; | |
| 259 | if (pGC->fillStyle == FillSolid && pPriv->and == 0) { | |
| 260 | dstBpp = pDrawable->bitsPerPixel; | |
| 261 | switch (dstBpp) { | |
| 262 | case 8: | |
| 263 | glyph = fbGlyph8; | |
| 264 | break; | |
| 265 | case 16: | |
| 266 | glyph = fbGlyph16; | |
| 267 | break; | |
| 268 | case 24: | |
| 269 | glyph = fbGlyph24; | |
| 270 | break; | |
| 271 | case 32: | |
| 272 | glyph = fbGlyph32; | |
| 273 | break; | |
| 274 | } | |
| 275 | } | |
| 276 | x += pDrawable->x; | |
| 277 | y += pDrawable->y; | |
| 278 | ||
| 279 | while (nglyph--) { | |
| 280 | pci = *ppci++; | |
| 281 | pglyph = FONTGLYPHBITS(pglyphBase, pci); | |
| 282 | gWidth = GLYPHWIDTHPIXELS(pci); | |
| 283 | gHeight = GLYPHHEIGHTPIXELS(pci); | |
| 284 | if (gWidth && gHeight) { | |
| 285 | gx = x + pci->metrics.leftSideBearing; | |
| 286 | gy = y - pci->metrics.ascent; | |
| 287 | if (glyph && gWidth <= sizeof(FbStip) * 8 && | |
| 288 | fbGlyphIn(fbGetCompositeClip(pGC), gx, gy, gWidth, gHeight)) { | |
| 289 | fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, | |
| 290 | dstYoff); | |
| 291 | (*glyph) (dst + (gy + dstYoff) * dstStride, dstStride, dstBpp, | |
| 292 | (FbStip *) pglyph, pPriv->xor, gx + dstXoff, gHeight); | |
| 293 | fbFinishAccess(pDrawable); | |
| 294 | } | |
| 295 | else { | |
| 296 | gStride = GLYPHWIDTHBYTESPADDED(pci) / sizeof(FbStip); | |
| 297 | fbPushImage(pDrawable, | |
| 298 | pGC, | |
| 299 | (FbStip *) pglyph, | |
| 300 | gStride, 0, gx, gy, gWidth, gHeight); | |
| 301 | } | |
| 302 | } | |
| 303 | x += pci->metrics.characterWidth; | |
| 304 | } | |
| 305 | } | |
| 306 | ||
| 307 | void | |
| 308 | fbImageGlyphBlt(DrawablePtr pDrawable, | |
| 309 | GCPtr pGC, | |
| 310 | int x, | |
| 311 | int y, | |
| 312 | unsigned int nglyph, CharInfoPtr * ppciInit, pointer pglyphBase) | |
| 313 | { | |
| 314 | FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); | |
| 315 | CharInfoPtr *ppci; | |
| 316 | CharInfoPtr pci; | |
| 317 | unsigned char *pglyph; /* pointer bits in glyph */ | |
| 318 | int gWidth, gHeight; /* width and height of glyph */ | |
| 319 | FbStride gStride; /* stride of glyph */ | |
| 320 | Bool opaque; | |
| 321 | int n; | |
| 322 | int gx, gy; | |
| 323 | void (*glyph) (FbBits *, FbStride, int, FbStip *, FbBits, int, int); | |
| 324 | FbBits *dst = 0; | |
| 325 | FbStride dstStride = 0; | |
| 326 | int dstBpp = 0; | |
| 327 | int dstXoff = 0, dstYoff = 0; | |
| 328 | ||
| 329 | glyph = 0; | |
| 330 | if (pPriv->and == 0) { | |
| 331 | dstBpp = pDrawable->bitsPerPixel; | |
| 332 | switch (dstBpp) { | |
| 333 | case 8: | |
| 334 | glyph = fbGlyph8; | |
| 335 | break; | |
| 336 | case 16: | |
| 337 | glyph = fbGlyph16; | |
| 338 | break; | |
| 339 | case 24: | |
| 340 | glyph = fbGlyph24; | |
| 341 | break; | |
| 342 | case 32: | |
| 343 | glyph = fbGlyph32; | |
| 344 | break; | |
| 345 | } | |
| 346 | } | |
| 347 | ||
| 348 | x += pDrawable->x; | |
| 349 | y += pDrawable->y; | |
| 350 | ||
| 351 | if (TERMINALFONT(pGC->font) | |
| 352 | && !glyph) { | |
| 353 | opaque = TRUE; | |
| 354 | } | |
| 355 | else { | |
| 356 | int xBack, widthBack; | |
| 357 | int yBack, heightBack; | |
| 358 | ||
| 359 | ppci = ppciInit; | |
| 360 | n = nglyph; | |
| 361 | widthBack = 0; | |
| 362 | while (n--) | |
| 363 | widthBack += (*ppci++)->metrics.characterWidth; | |
| 364 | ||
| 365 | xBack = x; | |
| 366 | if (widthBack < 0) { | |
| 367 | xBack += widthBack; | |
| 368 | widthBack = -widthBack; | |
| 369 | } | |
| 370 | yBack = y - FONTASCENT(pGC->font); | |
| 371 | heightBack = FONTASCENT(pGC->font) + FONTDESCENT(pGC->font); | |
| 372 | fbSolidBoxClipped(pDrawable, | |
| 373 | fbGetCompositeClip(pGC), | |
| 374 | xBack, | |
| 375 | yBack, | |
| 376 | xBack + widthBack, | |
| 377 | yBack + heightBack, | |
| 378 | fbAnd(GXcopy, pPriv->bg, pPriv->pm), | |
| 379 | fbXor(GXcopy, pPriv->bg, pPriv->pm)); | |
| 380 | opaque = FALSE; | |
| 381 | } | |
| 382 | ||
| 383 | ppci = ppciInit; | |
| 384 | while (nglyph--) { | |
| 385 | pci = *ppci++; | |
| 386 | pglyph = FONTGLYPHBITS(pglyphBase, pci); | |
| 387 | gWidth = GLYPHWIDTHPIXELS(pci); | |
| 388 | gHeight = GLYPHHEIGHTPIXELS(pci); | |
| 389 | if (gWidth && gHeight) { | |
| 390 | gx = x + pci->metrics.leftSideBearing; | |
| 391 | gy = y - pci->metrics.ascent; | |
| 392 | if (glyph && gWidth <= sizeof(FbStip) * 8 && | |
| 393 | fbGlyphIn(fbGetCompositeClip(pGC), gx, gy, gWidth, gHeight)) { | |
| 394 | fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, | |
| 395 | dstYoff); | |
| 396 | (*glyph) (dst + (gy + dstYoff) * dstStride, dstStride, dstBpp, | |
| 397 | (FbStip *) pglyph, pPriv->fg, gx + dstXoff, gHeight); | |
| 398 | fbFinishAccess(pDrawable); | |
| 399 | } | |
| 400 | else { | |
| 401 | gStride = GLYPHWIDTHBYTESPADDED(pci) / sizeof(FbStip); | |
| 402 | fbPutXYImage(pDrawable, | |
| 403 | fbGetCompositeClip(pGC), | |
| 404 | pPriv->fg, | |
| 405 | pPriv->bg, | |
| 406 | pPriv->pm, | |
| 407 | GXcopy, | |
| 408 | opaque, | |
| 409 | gx, | |
| 410 | gy, | |
| 411 | gWidth, gHeight, (FbStip *) pglyph, gStride, 0); | |
| 412 | } | |
| 413 | } | |
| 414 | x += pci->metrics.characterWidth; | |
| 415 | } | |
| 416 | } |