-/* $XConsortium: snfread.c,v 1.17 94/04/17 20:17:16 gildea Exp $ */
-/************************************************************************
-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 (c) 1994 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-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 X CONSORTIUM 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 X Consortium 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 X Consortium.
-
-*/
-
-#include <ctype.h>
-#include "fntfilst.h"
-#include "bitmap.h"
-#include "snfstr.h"
-
-static void snfUnloadFont();
-
-static int
-snfReadCharInfo(file, charInfo, base)
- 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(file, charInfo)
- FontFilePtr file;
- xCharInfo *charInfo;
-{
- snfCharInfoRec snfCharInfo;
-
- if (FontFileRead(file, (char *) &snfCharInfo, sizeof snfCharInfo) !=
- sizeof(snfCharInfo)) {
- return BadFontName;
- }
- *charInfo = snfCharInfo.metrics;
- return Successful;
-}
-
-static
-snfCopyInfo(snfInfo, pFontInfo)
- 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(snfInfo, pFontInfo, file)
- 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 = (char *) xalloc(bytestoalloc);
- if (!propspace)
- return AllocError;
-
- if (FontFileRead(file, propspace, bytestoalloc) != bytestoalloc) {
- xfree(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;
- }
-
- xfree(propspace);
- return Successful;
-}
-
-int
-snfReadHeader(snfInfo, file)
- 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;
-}
-
-int
-snfReadFont(pFont, file, bit, byte, glyph, scan)
- FontPtr pFont;
- FontFilePtr file;
- int bit,
- byte,
- glyph,
- scan;
-{
- snfFontInfoRec fi;
- unsigned bytestoalloc;
- int i;
- 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_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 = (char *) xalloc(bytestoalloc);
- if (!fontspace)
- return AllocError;
-
- bitmaps = (char *) xalloc (bitmapsSize);
- if (!bitmaps)
- {
- xfree (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;
- for (i = 0; ret == Successful && i < num_chars; i++) {
- ret = snfReadCharInfo(file, &bitmapFont->metrics[i], bitmaps);
- if (bitmapFont->metrics[i].bits)
- bitmapFont->encoding[i] = &bitmapFont->metrics[i];
- else
- bitmapFont->encoding[i] = 0;
- }
-
- if (ret != Successful) {
- xfree(bitmaps);
- xfree(fontspace);
- return ret;
- }
- /*
- * read the glyphs
- */
-
- if (FontFileRead(file, (char *) bitmaps, bitmapsSize) != bitmapsSize) {
- xfree(bitmaps);
- xfree(fontspace);
- return BadFontName;
- }
-
- if (def_bit != bit)
- BitOrderInvert(bitmaps, bitmapsSize);
- if ((def_byte == def_bit) != (bit == byte)) {
- switch (bit == byte ? def_scan : scan) {
- case 1:
- break;
- case 2:
- TwoByteSwap(bitmaps, bitmapsSize);
- break;
- case 4:
- FourByteSwap(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 = (char *) xalloc(sizepadbitmaps);
- if (!padbitmaps) {
- xfree (bitmaps);
- xfree (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++;
- }
- xfree(bitmaps);
- }
-
- /* now read and atom'ize properties */
-
- ret = snfReadProps(&fi, &pFont->info, file);
- if (ret != Successful) {
- xfree(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) {
- xfree(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(pFontInfo, file)
- 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 = (FontPropPtr) xalloc(fi.nProps * sizeof(FontPropRec));
- if (!pFontInfo->props)
- return AllocError;
- pFontInfo->isStringProp = (char *) xalloc(fi.nProps * sizeof(char));
- if (!pFontInfo->isStringProp) {
- xfree(pFontInfo->props);
- return AllocError;
- }
- num_chars = n2dChars(&fi);
- bytestoskip = num_chars * sizeof(snfCharInfoRec); /* charinfos */
- bytestoskip += BYTESOFGLYPHINFO(&fi);
- FontFileSkip(file, bytestoskip);
-
- ret = snfReadProps(&fi, pFontInfo, file);
- if (ret != Successful) {
- xfree(pFontInfo->props);
- xfree(pFontInfo->isStringProp);
- return ret;
- }
- if (fi.inkMetrics) {
- ret = snfReadxCharInfo(file, &pFontInfo->ink_minbounds);
- if (ret != Successful) {
- xfree(pFontInfo->props);
- xfree(pFontInfo->isStringProp);
- return ret;
- }
- ret = snfReadxCharInfo(file, &pFontInfo->ink_maxbounds);
- if (ret != Successful) {
- xfree(pFontInfo->props);
- xfree(pFontInfo->isStringProp);
- return ret;
- }
- } else {
- pFontInfo->ink_minbounds = pFontInfo->minbounds;
- pFontInfo->ink_maxbounds = pFontInfo->maxbounds;
- }
- return Successful;
-
-}
-
-static void
-snfUnloadFont(pFont)
- FontPtr pFont;
-{
- BitmapFontPtr bitmapFont;
-
- bitmapFont = (BitmapFontPtr) pFont->fontPrivate;
- xfree (bitmapFont->bitmaps);
- xfree (bitmapFont);
- xfree (pFont->devPrivates);
- xfree (pFont);
-}
-
-static int snf_set;
-static int snf_bit, snf_byte, snf_glyph, snf_scan;
-
-SnfSetFormat (bit, byte, glyph, scan)
- int bit, byte, glyph, scan;
-{
- snf_bit = bit;
- snf_byte = byte;
- snf_glyph = glyph;
- snf_scan = scan;
- snf_set = 1;
-}
-
-SnfGetFormat (bit, byte, glyph, scan)
- int *bit, *byte, *glyph, *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;
-}
projects / rdpsrv / blobdiff