/************************************************************************ Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ************************************************************************/ /* Copyright 1994, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <ctype.h> #include <X11/fonts/fntfilst.h> #include <X11/fonts/bitmap.h> #include "snfstr.h" #include <stdarg.h> static void snfError(const char* message, ...) { va_list args; va_start(args, message); fprintf(stderr, "SNF Error: "); vfprintf(stderr, message, args); va_end(args); } static void snfUnloadFont(FontPtr pFont); static int snfReadCharInfo(FontFilePtr file, CharInfoPtr charInfo, char *base) { snfCharInfoRec snfCharInfo; #define Width(m) ((m).rightSideBearing - (m).leftSideBearing) #define Height(m) ((m).ascent + (m).descent) if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) != sizeof(snfCharInfo)) { return BadFontName; } charInfo->metrics = snfCharInfo.metrics; if (snfCharInfo.exists) charInfo->bits = base + snfCharInfo.byteOffset; else charInfo->bits = 0; return Successful; } static int snfReadxCharInfo(FontFilePtr file, xCharInfo *charInfo) { snfCharInfoRec snfCharInfo; if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) != sizeof(snfCharInfo)) { return BadFontName; } *charInfo = snfCharInfo.metrics; return Successful; } static void snfCopyInfo(snfFontInfoPtr snfInfo, FontInfoPtr pFontInfo) { pFontInfo->firstCol = snfInfo->firstCol; pFontInfo->lastCol = snfInfo->lastCol; pFontInfo->firstRow = snfInfo->firstRow; pFontInfo->lastRow = snfInfo->lastRow; pFontInfo->defaultCh = snfInfo->chDefault; pFontInfo->noOverlap = snfInfo->noOverlap; pFontInfo->terminalFont = snfInfo->terminalFont; pFontInfo->constantMetrics = snfInfo->constantMetrics; pFontInfo->constantWidth = snfInfo->constantWidth; pFontInfo->inkInside = snfInfo->inkInside; pFontInfo->inkMetrics = snfInfo->inkMetrics; pFontInfo->allExist = snfInfo->allExist; pFontInfo->drawDirection = snfInfo->drawDirection; pFontInfo->anamorphic = FALSE; pFontInfo->cachable = TRUE; pFontInfo->maxOverlap = 0; pFontInfo->minbounds = snfInfo->minbounds.metrics; pFontInfo->maxbounds = snfInfo->maxbounds.metrics; pFontInfo->fontAscent = snfInfo->fontAscent; pFontInfo->fontDescent = snfInfo->fontDescent; pFontInfo->nprops = snfInfo->nProps; } static int snfReadProps(snfFontInfoPtr snfInfo, FontInfoPtr pFontInfo, FontFilePtr file) { char *strings; FontPropPtr pfp; snfFontPropPtr psnfp; char *propspace; int bytestoalloc; int i; bytestoalloc = snfInfo->nProps * sizeof(snfFontPropRec) + BYTESOFSTRINGINFO(snfInfo); propspace = malloc(bytestoalloc); if (!propspace) { snfError("snfReadProps(): Couldn't allocate propspace (%d)\n", bytestoalloc); return AllocError; } if (FontFileRead(file, propspace, bytestoalloc) != bytestoalloc) { free(propspace); return BadFontName; } psnfp = (snfFontPropPtr) propspace; strings = propspace + BYTESOFPROPINFO(snfInfo); for (i = 0, pfp = pFontInfo->props; i < snfInfo->nProps; i++, pfp++, psnfp++) { pfp->name = MakeAtom(&strings[psnfp->name], (unsigned) strlen(&strings[psnfp->name]), 1); pFontInfo->isStringProp[i] = psnfp->indirect; if (psnfp->indirect) pfp->value = (INT32) MakeAtom(&strings[psnfp->value], (unsigned) strlen(&strings[psnfp->value]), 1); else pfp->value = psnfp->value; } free(propspace); return Successful; } static int snfReadHeader(snfFontInfoPtr snfInfo, FontFilePtr file) { if (FontFileRead(file, (char *) snfInfo, sizeof *snfInfo) != sizeof *snfInfo) return BadFontName; if (snfInfo->version1 != FONT_FILE_VERSION || snfInfo->version2 != FONT_FILE_VERSION) return BadFontName; return Successful; } static int snf_set; static int snf_bit, snf_byte, snf_glyph, snf_scan; void SnfSetFormat (int bit, int byte, int glyph, int scan) { snf_bit = bit; snf_byte = byte; snf_glyph = glyph; snf_scan = scan; snf_set = 1; } static void SnfGetFormat (int *bit, int *byte, int *glyph, int *scan) { if (!snf_set) FontDefaultFormat (&snf_bit, &snf_byte, &snf_glyph, &snf_scan); *bit = snf_bit; *byte = snf_byte; *glyph = snf_glyph; *scan = snf_scan; } int snfReadFont(FontPtr pFont, FontFilePtr file, int bit, int byte, int glyph, int scan) { snfFontInfoRec fi; unsigned bytestoalloc; int i, j; char *fontspace; BitmapFontPtr bitmapFont; int num_chars; int bitmapsSize; int ret; int metrics_off; int encoding_off; int props_off; int isStringProp_off; int ink_off; char *bitmaps; int def_bit, def_byte, def_glyph, def_scan; ret = snfReadHeader(&fi, file); if (ret != Successful) return ret; SnfGetFormat (&def_bit, &def_byte, &def_glyph, &def_scan); /* * we'll allocate one chunk of memory and split it among the various parts * of the font: * * BitmapFontRec CharInfoRec's Glyphs Encoding DIX Properties Ink CharInfoRec's * * If the glyphpad is not the same as the font file, then the glyphs * are allocated separately, to be later realloc'ed when we know * how big to make them. */ bitmapsSize = BYTESOFGLYPHINFO(&fi); num_chars = n2dChars(&fi); bytestoalloc = sizeof(BitmapFontRec); /* bitmapFont */ metrics_off = bytestoalloc; bytestoalloc += num_chars * sizeof(CharInfoRec); /* metrics */ encoding_off = bytestoalloc; bytestoalloc += NUM_SEGMENTS(num_chars) * sizeof(CharInfoPtr**); /* encoding */ props_off = bytestoalloc; bytestoalloc += fi.nProps * sizeof(FontPropRec); /* props */ isStringProp_off = bytestoalloc; bytestoalloc += fi.nProps * sizeof(char); /* isStringProp */ bytestoalloc = (bytestoalloc + 3) & ~3; ink_off = bytestoalloc; if (fi.inkMetrics) bytestoalloc += num_chars * sizeof(xCharInfo); /* ink_metrics */ fontspace = malloc(bytestoalloc); if (!fontspace) { snfError("snfReadFont(): Couldn't allocate fontspace (%d)\n", bytestoalloc); return AllocError; } bitmaps = malloc (bitmapsSize); if (!bitmaps) { snfError("snfReadFont(): Couldn't allocate bitmaps (%d)\n", bitmapsSize); free (fontspace); return AllocError; } /* * now fix up pointers */ bitmapFont = (BitmapFontPtr) fontspace; bitmapFont->num_chars = num_chars; bitmapFont->metrics = (CharInfoPtr) (fontspace + metrics_off); bitmapFont->encoding = (CharInfoPtr **) (fontspace + encoding_off); bitmapFont->bitmaps = bitmaps; bitmapFont->pDefault = NULL; bitmapFont->bitmapExtra = NULL; pFont->info.props = (FontPropPtr) (fontspace + props_off); pFont->info.isStringProp = (char *) (fontspace + isStringProp_off); if (fi.inkMetrics) bitmapFont->ink_metrics = (xCharInfo *) (fontspace + ink_off); else bitmapFont->ink_metrics = 0; /* * read the CharInfo */ ret = Successful; memset(bitmapFont->encoding, 0, NUM_SEGMENTS(num_chars)*sizeof(CharInfoPtr*)); for (i = 0; ret == Successful && i < num_chars; i++) { ret = snfReadCharInfo(file, &bitmapFont->metrics[i], bitmaps); if (bitmapFont->metrics[i].bits) { if (!bitmapFont->encoding[SEGMENT_MAJOR(i)]) { bitmapFont->encoding[SEGMENT_MAJOR(i)]= calloc(BITMAP_FONT_SEGMENT_SIZE, sizeof(CharInfoPtr)); if (!bitmapFont->encoding[SEGMENT_MAJOR(i)]) { ret = AllocError; break; } } ACCESSENCODINGL(bitmapFont->encoding,i) = &bitmapFont->metrics[i]; } } if (ret != Successful) { free(bitmaps); if(bitmapFont->encoding) { for(j=0; j<SEGMENT_MAJOR(i); j++) free(bitmapFont->encoding[i]); } free(fontspace); return ret; } /* * read the glyphs */ if (FontFileRead(file, bitmaps, bitmapsSize) != bitmapsSize) { free(bitmaps); free(fontspace); return BadFontName; } if (def_bit != bit) BitOrderInvert((unsigned char *)bitmaps, bitmapsSize); if ((def_byte == def_bit) != (bit == byte)) { switch (bit == byte ? def_scan : scan) { case 1: break; case 2: TwoByteSwap((unsigned char *)bitmaps, bitmapsSize); break; case 4: FourByteSwap((unsigned char *)bitmaps, bitmapsSize); break; } } if (def_glyph != glyph) { char *padbitmaps; int sizepadbitmaps; int sizechar; CharInfoPtr metric; sizepadbitmaps = 0; metric = bitmapFont->metrics; for (i = 0; i < num_chars; i++) { if (metric->bits) sizepadbitmaps += BYTES_FOR_GLYPH(metric,glyph); metric++; } padbitmaps = malloc(sizepadbitmaps); if (!padbitmaps) { snfError("snfReadFont(): Couldn't allocate padbitmaps (%d)\n", sizepadbitmaps); free (bitmaps); free (fontspace); return AllocError; } metric = bitmapFont->metrics; bitmapFont->bitmaps = padbitmaps; for (i = 0; i < num_chars; i++) { sizechar = RepadBitmap(metric->bits, padbitmaps, def_glyph, glyph, metric->metrics.rightSideBearing - metric->metrics.leftSideBearing, metric->metrics.ascent + metric->metrics.descent); metric->bits = padbitmaps; padbitmaps += sizechar; metric++; } free(bitmaps); } /* now read and atom'ize properties */ ret = snfReadProps(&fi, &pFont->info, file); if (ret != Successful) { free(fontspace); return ret; } snfCopyInfo(&fi, &pFont->info); /* finally, read the ink metrics if the exist */ if (fi.inkMetrics) { ret = Successful; ret = snfReadxCharInfo(file, &pFont->info.ink_minbounds); ret = snfReadxCharInfo(file, &pFont->info.ink_maxbounds); for (i = 0; ret == Successful && i < num_chars; i++) ret = snfReadxCharInfo(file, &bitmapFont->ink_metrics[i]); if (ret != Successful) { free(fontspace); return ret; } } else { pFont->info.ink_minbounds = pFont->info.minbounds; pFont->info.ink_maxbounds = pFont->info.maxbounds; } if (pFont->info.defaultCh != (unsigned short) NO_SUCH_CHAR) { unsigned int r, c, cols; r = pFont->info.defaultCh >> 8; c = pFont->info.defaultCh & 0xFF; if (pFont->info.firstRow <= r && r <= pFont->info.lastRow && pFont->info.firstCol <= c && c <= pFont->info.lastCol) { cols = pFont->info.lastCol - pFont->info.firstCol + 1; r = r - pFont->info.firstRow; c = c - pFont->info.firstCol; bitmapFont->pDefault = &bitmapFont->metrics[r * cols + c]; } } bitmapFont->bitmapExtra = (BitmapExtraPtr) 0; pFont->fontPrivate = (pointer) bitmapFont; pFont->get_glyphs = bitmapGetGlyphs; pFont->get_metrics = bitmapGetMetrics; pFont->unload_font = snfUnloadFont; pFont->unload_glyphs = NULL; pFont->bit = bit; pFont->byte = byte; pFont->glyph = glyph; pFont->scan = scan; return Successful; } int snfReadFontInfo(FontInfoPtr pFontInfo, FontFilePtr file) { int ret; snfFontInfoRec fi; int bytestoskip; int num_chars; ret = snfReadHeader(&fi, file); if (ret != Successful) return ret; snfCopyInfo(&fi, pFontInfo); pFontInfo->props = malloc(fi.nProps * sizeof(FontPropRec)); if (!pFontInfo->props) { snfError("snfReadFontInfo(): Couldn't allocate props (%d*%d)\n", fi.nProps, sizeof(FontPropRec)); return AllocError; } pFontInfo->isStringProp = malloc(fi.nProps * sizeof(char)); if (!pFontInfo->isStringProp) { snfError("snfReadFontInfo(): Couldn't allocate isStringProp (%d*%d)\n", fi.nProps, sizeof(char)); free(pFontInfo->props); return AllocError; } num_chars = n2dChars(&fi); bytestoskip = num_chars * sizeof(snfCharInfoRec); /* charinfos */ bytestoskip += BYTESOFGLYPHINFO(&fi); (void)FontFileSkip(file, bytestoskip); ret = snfReadProps(&fi, pFontInfo, file); if (ret != Successful) { free(pFontInfo->props); free(pFontInfo->isStringProp); return ret; } if (fi.inkMetrics) { ret = snfReadxCharInfo(file, &pFontInfo->ink_minbounds); if (ret != Successful) { free(pFontInfo->props); free(pFontInfo->isStringProp); return ret; } ret = snfReadxCharInfo(file, &pFontInfo->ink_maxbounds); if (ret != Successful) { free(pFontInfo->props); free(pFontInfo->isStringProp); return ret; } } else { pFontInfo->ink_minbounds = pFontInfo->minbounds; pFontInfo->ink_maxbounds = pFontInfo->maxbounds; } return Successful; } static void snfUnloadFont(FontPtr pFont) { BitmapFontPtr bitmapFont; bitmapFont = (BitmapFontPtr) pFont->fontPrivate; free (bitmapFont->bitmaps); free (bitmapFont); DestroyFontRec (pFont); }