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Diffstat (limited to 'libXfont/src/fc/fsconvert.c')
-rw-r--r--libXfont/src/fc/fsconvert.c1438
1 files changed, 719 insertions, 719 deletions
diff --git a/libXfont/src/fc/fsconvert.c b/libXfont/src/fc/fsconvert.c
index 5c979fc23..15c5e4200 100644
--- a/libXfont/src/fc/fsconvert.c
+++ b/libXfont/src/fc/fsconvert.c
@@ -1,719 +1,719 @@
-/*
- * Copyright 1990 Network Computing Devices
- *
- * 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, and that the name of Network Computing Devices not be used
- * in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. Network Computing Devices
- * makes no representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- * NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
- * IN NO EVENT SHALL NETWORK COMPUTING DEVICES 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.
- *
- * Author: Dave Lemke, Network Computing Devices, Inc
- */
-/*
- * FS data conversion
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <X11/X.h>
-#include <X11/Xtrans/Xtrans.h>
-#include <X11/Xpoll.h>
-#include <X11/fonts/FS.h>
-#include <X11/fonts/FSproto.h>
-#include <X11/fonts/fontmisc.h>
-#include <X11/fonts/fontstruct.h>
-#include "fservestr.h"
-#include <X11/fonts/fontutil.h>
-#include "fslibos.h"
-
-extern char _fs_glyph_undefined;
-extern char _fs_glyph_requested;
-
-/*
- * converts data from font server form to X server form
- */
-
-void
-_fs_convert_char_info(fsXCharInfo *src, xCharInfo *dst)
-{
- dst->ascent = src->ascent;
- dst->descent = src->descent;
- dst->leftSideBearing = src->left;
- dst->rightSideBearing = src->right;
- dst->characterWidth = src->width;
- dst->attributes = src->attributes;
-}
-
-void
-_fs_init_fontinfo(FSFpePtr conn, FontInfoPtr pfi)
-{
- if (conn->fsMajorVersion == 1) {
- unsigned short n;
- n = pfi->firstCol;
- pfi->firstCol = pfi->firstRow;
- pfi->firstRow = n;
- n = pfi->lastCol;
- pfi->lastCol = pfi->lastRow;
- pfi->lastRow = n;
- pfi->defaultCh = ((pfi->defaultCh >> 8) & 0xff)
- + ((pfi->defaultCh & 0xff) << 8);
- }
-
- if (FontCouldBeTerminal (pfi))
- {
- pfi->terminalFont = TRUE;
- pfi->minbounds.ascent = pfi->fontAscent;
- pfi->minbounds.descent = pfi->fontDescent;
- pfi->minbounds.leftSideBearing = 0;
- pfi->minbounds.rightSideBearing = pfi->minbounds.characterWidth;
- pfi->maxbounds = pfi->minbounds;
- }
-
- FontComputeInfoAccelerators (pfi);
-}
-
-int
-_fs_convert_props(fsPropInfo *pi, fsPropOffset *po, pointer pd,
- FontInfoPtr pfi)
-{
- FontPropPtr dprop;
- int i,
- nprops;
- char *is_str;
- fsPropOffset local_off;
- char *off_adr;
- char *pdc = pd;
-
-/* stolen from server/include/resource.h */
-#define BAD_RESOURCE 0xe0000000
-
- nprops = pfi->nprops = pi->num_offsets;
-
- if (nprops < 0
- || nprops > SIZE_MAX/(sizeof(FontPropRec) + sizeof(char)))
- return -1;
-
- dprop = malloc(sizeof(FontPropRec) * nprops + sizeof (char) * nprops);
- if (!dprop)
- return -1;
-
- is_str = (char *) (dprop + nprops);
- pfi->props = dprop;
- pfi->isStringProp = is_str;
-
- off_adr = (char *)po;
- for (i = 0; i < nprops; i++, dprop++, is_str++)
- {
- memcpy(&local_off, off_adr, SIZEOF(fsPropOffset));
- dprop->name = MakeAtom(&pdc[local_off.name.position],
- local_off.name.length, 1);
- if (local_off.type != PropTypeString) {
- *is_str = FALSE;
- dprop->value = local_off.value.position;
- } else {
- *is_str = TRUE;
- dprop->value = (INT32) MakeAtom(&pdc[local_off.value.position],
- local_off.value.length, 1);
- if (dprop->value == BAD_RESOURCE)
- {
- free (pfi->props);
- pfi->nprops = 0;
- pfi->props = 0;
- pfi->isStringProp = 0;
- return -1;
- }
- }
- off_adr += SIZEOF(fsPropOffset);
- }
-
- return nprops;
-}
-
-void
-_fs_free_props (FontInfoPtr pfi)
-{
- if (pfi->props)
- {
- free (pfi->props);
- pfi->nprops = 0;
- pfi->props = 0;
- }
-}
-
-int
-_fs_convert_lfwi_reply(FSFpePtr conn, FontInfoPtr pfi,
- fsListFontsWithXInfoReply *fsrep,
- fsPropInfo *pi, fsPropOffset *po, pointer pd)
-{
- fsUnpack_XFontInfoHeader(fsrep, pfi);
- _fs_init_fontinfo(conn, pfi);
-
- if (_fs_convert_props(pi, po, pd, pfi) == -1)
- return AllocError;
-
- return Successful;
-}
-
-
-#define ENCODING_UNDEFINED(enc) \
- ((enc)->bits == &_fs_glyph_undefined ? \
- TRUE : \
- (access_done = access_done && (enc)->bits != &_fs_glyph_requested, \
- FALSE))
-
-#define GLYPH_UNDEFINED(loc) ENCODING_UNDEFINED(encoding + (loc))
-
-/*
- * figures out what glyphs to request
- *
- * Includes logic to attempt to reduce number of round trips to the font
- * server: when a glyph is requested, fs_build_range() requests a
- * 16-glyph range of glyphs that contains the requested glyph. This is
- * predicated on the belief that using a glyph increases the chances
- * that nearby glyphs will be used: a good assumption for phonetic
- * alphabets, but a questionable one for ideographic/pictographic ones.
- */
-/* ARGSUSED */
-int
-fs_build_range(FontPtr pfont, Bool range_flag, unsigned int count,
- int item_size, unsigned char *data, int *nranges,
- fsRange **ranges)
-{
- FSFontDataPtr fsd = (FSFontDataPtr) (pfont->fpePrivate);
- FSFontPtr fsfont = (FSFontPtr) (pfont->fontPrivate);
- register CharInfoPtr encoding = fsfont->encoding;
- FontInfoPtr pfi = &(pfont->info);
- fsRange range;
- int access_done = TRUE;
- int err;
- register unsigned long firstrow, lastrow, firstcol, lastcol;
- register unsigned long row;
- register unsigned long col;
- register unsigned long loc;
-
- if (!fsd->glyphs_to_get)
- return AccessDone;
-
- firstrow = pfi->firstRow;
- lastrow = pfi->lastRow;
- firstcol = pfi->firstCol;
- lastcol = pfi->lastCol;
-
- /* Make sure we have default char */
- if (fsfont->pDefault && ENCODING_UNDEFINED(fsfont->pDefault))
- {
- loc = fsfont->pDefault - encoding;
- row = loc / (lastcol - firstcol + 1) + firstrow;
- col = loc % (lastcol - firstcol + 1) + firstcol;
-
- range.min_char_low = range.max_char_low = col;
- range.min_char_high = range.max_char_high = row;
-
- if ((err = add_range(&range, nranges, ranges, FALSE)) !=
- Successful) return err;
- encoding[loc].bits = &_fs_glyph_requested;
- access_done = FALSE;
- }
-
- if (!range_flag && item_size == 1)
- {
- if (firstrow != 0) return AccessDone;
- while (count--)
- {
- col = *data++;
- if (col >= firstcol && col <= lastcol &&
- GLYPH_UNDEFINED(col - firstcol))
- {
- int col1, col2;
- col1 = col & 0xf0;
- col2 = col1 + 15;
- if (col1 < firstcol) col1 = firstcol;
- if (col2 > lastcol) col2 = lastcol;
- /* Collect a 16-glyph neighborhood containing the requested
- glyph... should in most cases reduce the number of round
- trips to the font server. */
- for (col = col1; col <= col2; col++)
- {
- if (!GLYPH_UNDEFINED(col - firstcol)) continue;
- range.min_char_low = range.max_char_low = col;
- range.min_char_high = range.max_char_high = 0;
- if ((err = add_range(&range, nranges, ranges, FALSE)) !=
- Successful) return err;
- encoding[col - firstcol].bits = &_fs_glyph_requested;
- access_done = FALSE;
- }
- }
- }
- }
- else
- {
- fsRange fullrange[1];
-
- if (range_flag && count == 0)
- {
- count = 2;
- data = (unsigned char *)fullrange;
- fullrange[0].min_char_high = firstrow;
- fullrange[0].min_char_low = firstcol;
- fullrange[0].max_char_high = lastrow;
- fullrange[0].max_char_low = lastcol;
- }
-
- while (count--)
- {
- int row1, col1, row2, col2;
- row1 = row2 = *data++;
- col1 = col2 = *data++;
- if (range_flag)
- {
- if (count)
- {
- row2 = *data++;
- col2 = *data++;
- count--;
- }
- else
- {
- row2 = lastrow;
- col2 = lastcol;
- }
- if (row1 < firstrow) row1 = firstrow;
- if (row2 > lastrow) row2 = lastrow;
- if (col1 < firstcol) col1 = firstcol;
- if (col2 > lastcol) col2 = lastcol;
- }
- else
- {
- if (row1 < firstrow || row1 > lastrow ||
- col1 < firstcol || col1 > lastcol)
- continue;
- }
- for (row = row1; row <= row2; row++)
- {
- expand_glyph_range: ;
- loc = (row - firstrow) * (lastcol + 1 - firstcol) +
- (col1 - firstcol);
- for (col = col1; col <= col2; col++, loc++)
- {
- if (GLYPH_UNDEFINED(loc))
- {
- if (row1 == row2 &&
- (((col1 & 0xf) && col1 > firstcol) ||
- (col2 & 0xf) != 0xf) && (col2 < lastcol))
- {
- /* If we're loading from a single row, expand
- range of glyphs loaded to a multiple of
- a 16-glyph range -- attempt to reduce number
- of round trips to the font server. */
- col1 &= 0xf0;
- col2 = (col2 & 0xf0) + 15;
- if (col1 < firstcol) col1 = firstcol;
- if (col2 > lastcol) col2 = lastcol;
- goto expand_glyph_range;
- }
- range.min_char_low = range.max_char_low = col;
- range.min_char_high = range.max_char_high = row;
- if ((err = add_range(&range, nranges, ranges, FALSE)) !=
- Successful) return err;
- encoding[loc].bits = &_fs_glyph_requested;
- access_done = FALSE;
- }
- }
- }
- }
- }
-
- return access_done ?
- AccessDone :
- Successful;
-}
-
-#undef GLYPH_UNDEFINED
-#undef ENCODING_UNDEFINED
-
-
-/* _fs_clean_aborted_loadglyphs(): Undoes the changes to the encoding array
- performed by fs_build_range(); for use if the associated LoadGlyphs
- requests needs to be cancelled. */
-
-void
-_fs_clean_aborted_loadglyphs(FontPtr pfont, int num_expected_ranges,
- fsRange *expected_ranges)
-{
- register FSFontPtr fsfont;
- register int i;
-
- fsfont = (FSFontPtr) pfont->fontPrivate;
- if (fsfont->encoding)
- {
- fsRange full_range[1];
- if (!num_expected_ranges)
- {
- full_range[0].min_char_low = pfont->info.firstCol;
- full_range[0].min_char_high = pfont->info.firstRow;
- full_range[0].max_char_low = pfont->info.lastCol;
- full_range[0].max_char_high = pfont->info.lastRow;
- num_expected_ranges = 1;
- expected_ranges = full_range;
- }
-
- for (i = 0; i < num_expected_ranges; i++)
- {
- int row, col;
- for (row = expected_ranges[i].min_char_high;
- row <= expected_ranges[i].max_char_high;
- row++)
- {
- register CharInfoPtr encoding = fsfont->encoding +
- ((row - pfont->info.firstRow) *
- (pfont->info.lastCol -
- pfont->info.firstCol + 1) +
- expected_ranges[i].min_char_low -
- pfont->info.firstCol);
- for (col = expected_ranges[i].min_char_low;
- col <= expected_ranges[i].max_char_low;
- encoding++, col++)
- {
- if (encoding->bits == &_fs_glyph_requested)
- encoding->bits = &_fs_glyph_undefined;
- }
- }
- }
- }
-}
-
-static int
-_fs_get_glyphs(FontPtr pFont, unsigned long count, unsigned char *chars,
- FontEncoding charEncoding,
- unsigned long *glyphCount, /* RETURN */
- CharInfoPtr *glyphs) /* RETURN */
-{
- FSFontPtr fsdata;
- unsigned int firstCol;
- register unsigned int numCols;
- unsigned int firstRow;
- unsigned int numRows;
- CharInfoPtr *glyphsBase;
- register unsigned int c;
- register CharInfoPtr pci;
- unsigned int r;
- CharInfoPtr encoding;
- CharInfoPtr pDefault;
- FSFontDataPtr fsd = (FSFontDataPtr) pFont->fpePrivate;
- int err = Successful;
-
- fsdata = (FSFontPtr) pFont->fontPrivate;
- encoding = fsdata->encoding;
- pDefault = fsdata->pDefault;
- firstCol = pFont->info.firstCol;
- numCols = pFont->info.lastCol - firstCol + 1;
- glyphsBase = glyphs;
-
- /* In this age of glyph caching, any glyphs gotten through this
- procedure should already be loaded. If they are not, we are
- dealing with someone (perhaps a ddx driver optimizing a font)
- that doesn't understand the finer points of glyph caching. The
- CHECK_ENCODING macro checks for this condition... if found, it
- calls fs_load_all_glyphs(), which corrects it. Since the caller
- of this code will not know how to handle a return value of
- Suspended, the fs_load_all_glyphs() procedure will block and
- freeze the server until the load operation is done. Moral: the
- glyphCachingMode flag really must indicate the capabilities of
- the ddx drivers. */
-
-#define CHECK_ENCODING(cnum) \
- ( pci = encoding + (cnum), \
- fsd->glyphs_to_get ? \
- ( pci->bits == &_fs_glyph_undefined || pci->bits == &_fs_glyph_requested ? \
- ((err = fs_load_all_glyphs(pFont)), pci) : \
- pci ) : \
- pci )
-
- switch (charEncoding) {
-
- case Linear8Bit:
- case TwoD8Bit:
- if (pFont->info.firstRow > 0)
- break;
- if (pFont->info.allExist && pDefault) {
- while (err == Successful && count--) {
- c = (*chars++) - firstCol;
- if (c < numCols)
- *glyphs++ = CHECK_ENCODING(c);
- else
- *glyphs++ = pDefault;
- }
- } else {
- while (err == Successful && count--) {
- c = (*chars++) - firstCol;
- if (c < numCols && CHECK_ENCODING(c)->bits)
- *glyphs++ = pci;
- else if (pDefault)
- *glyphs++ = pDefault;
- }
- }
- break;
- case Linear16Bit:
- if (pFont->info.allExist && pDefault) {
- while (err == Successful && count--) {
- c = *chars++ << 8;
- c = (c | *chars++) - firstCol;
- if (c < numCols)
- *glyphs++ = CHECK_ENCODING(c);
- else
- *glyphs++ = pDefault;
- }
- } else {
- while (err == Successful && count--) {
- c = *chars++ << 8;
- c = (c | *chars++) - firstCol;
- if (c < numCols && CHECK_ENCODING(c)->bits)
- *glyphs++ = pci;
- else if (pDefault)
- *glyphs++ = pDefault;
- }
- }
- break;
-
- case TwoD16Bit:
- firstRow = pFont->info.firstRow;
- numRows = pFont->info.lastRow - firstRow + 1;
- while (err == Successful && count--) {
- r = (*chars++) - firstRow;
- c = (*chars++) - firstCol;
- if (r < numRows && c < numCols &&
- CHECK_ENCODING(r * numCols + c)->bits)
- *glyphs++ = pci;
- else if (pDefault)
- *glyphs++ = pDefault;
- }
- break;
- }
- *glyphCount = glyphs - glyphsBase;
- return err;
-}
-
-
-static int
-_fs_get_metrics(FontPtr pFont, unsigned long count, unsigned char *chars,
- FontEncoding charEncoding,
- unsigned long *glyphCount, /* RETURN */
- xCharInfo **glyphs) /* RETURN */
-{
- FSFontPtr fsdata;
- unsigned int firstCol;
- register unsigned int numCols;
- unsigned int firstRow;
- unsigned int numRows;
- xCharInfo **glyphsBase;
- register unsigned int c;
- unsigned int r;
- CharInfoPtr encoding;
- CharInfoPtr pDefault;
-
- fsdata = (FSFontPtr) pFont->fontPrivate;
- encoding = fsdata->inkMetrics;
- pDefault = fsdata->pDefault;
- /* convert default bitmap metric to default ink metric */
- if (pDefault)
- pDefault = encoding + (pDefault - fsdata->encoding);
- firstCol = pFont->info.firstCol;
- numCols = pFont->info.lastCol - firstCol + 1;
- glyphsBase = glyphs;
-
-
- /* XXX - this should be much smarter */
- /* make sure the glyphs are there */
- switch (charEncoding) {
-
- case Linear8Bit:
- case TwoD8Bit:
- if (pFont->info.firstRow > 0)
- break;
- if (pFont->info.allExist && pDefault) {
- while (count--) {
- c = (*chars++) - firstCol;
- if (c < numCols)
- *glyphs++ = (xCharInfo *)&encoding[c];
- else
- *glyphs++ = (xCharInfo *)pDefault;
- }
- } else {
- while (count--) {
- c = (*chars++) - firstCol;
- if (c < numCols)
- *glyphs++ = (xCharInfo *)(encoding + c);
- else if (pDefault)
- *glyphs++ = (xCharInfo *)pDefault;
- }
- }
- break;
- case Linear16Bit:
- if (pFont->info.allExist && pDefault) {
- while (count--) {
- c = *chars++ << 8;
- c = (c | *chars++) - firstCol;
- if (c < numCols)
- *glyphs++ = (xCharInfo *)(encoding + c);
- else
- *glyphs++ = (xCharInfo *)pDefault;
- }
- } else {
- while (count--) {
- c = *chars++ << 8;
- c = (c | *chars++) - firstCol;
- if (c < numCols)
- *glyphs++ = (xCharInfo *)(encoding + c);
- else if (pDefault)
- *glyphs++ = (xCharInfo *)pDefault;
- }
- }
- break;
-
- case TwoD16Bit:
- firstRow = pFont->info.firstRow;
- numRows = pFont->info.lastRow - firstRow + 1;
- while (count--) {
- r = (*chars++) - firstRow;
- c = (*chars++) - firstCol;
- if (r < numRows && c < numCols)
- *glyphs++ = (xCharInfo *)(encoding + (r * numCols + c));
- else if (pDefault)
- *glyphs++ = (xCharInfo *)pDefault;
- }
- break;
- }
- *glyphCount = glyphs - glyphsBase;
- return Successful;
-}
-
-
-static void
-_fs_unload_font(FontPtr pfont)
-{
- FSFontPtr fsdata = (FSFontPtr) pfont->fontPrivate;
- FSFontDataPtr fsd = (FSFontDataPtr) pfont->fpePrivate;
- CharInfoPtr encoding = fsdata->encoding;
- FSGlyphPtr glyphs;
-
- /*
- * fsdata points at FSFontRec, FSFontDataRec and name
- */
- if (encoding)
- free(encoding);
-
- while ((glyphs = fsdata->glyphs))
- {
- fsdata->glyphs = glyphs->next;
- free (glyphs);
- }
-
- /* XXX we may get called after the resource DB has been cleaned out */
- if (find_old_font(fsd->fontid))
- DeleteFontClientID (fsd->fontid);
-
- _fs_free_props (&pfont->info);
-
- free(fsdata);
-
- DestroyFontRec(pfont);
-}
-
-FontPtr
-fs_create_font (FontPathElementPtr fpe,
- char *name,
- int namelen,
- fsBitmapFormat format,
- fsBitmapFormatMask fmask)
-{
- FontPtr pfont;
- FSFontPtr fsfont;
- FSFontDataPtr fsd;
- int bit, byte, scan, glyph;
-
- pfont = CreateFontRec ();
- if (!pfont)
- return 0;
- fsfont = malloc (sizeof (FSFontRec) + sizeof (FSFontDataRec) + namelen + 1);
- if (!fsfont)
- {
- DestroyFontRec (pfont);
- return 0;
- }
- fsd = (FSFontDataPtr) (fsfont + 1);
- bzero((char *) fsfont, sizeof(FSFontRec));
- bzero((char *) fsd, sizeof(FSFontDataRec));
-
- pfont->fpe = fpe;
- pfont->fontPrivate = (pointer) fsfont;
- pfont->fpePrivate = (pointer) fsd;
-
- /* These font components will be needed in packGlyphs */
- CheckFSFormat(format, BitmapFormatMaskBit |
- BitmapFormatMaskByte |
- BitmapFormatMaskScanLineUnit |
- BitmapFormatMaskScanLinePad,
- &bit,
- &byte,
- &scan,
- &glyph,
- NULL);
- pfont->format = format;
- pfont->bit = bit;
- pfont->byte = byte;
- pfont->scan = scan;
- pfont->glyph = glyph;
-
- pfont->info.nprops = 0;
- pfont->info.props = 0;
- pfont->info.isStringProp = 0;
-
- /* set font function pointers */
- pfont->get_glyphs = _fs_get_glyphs;
- pfont->get_metrics = _fs_get_metrics;
- pfont->unload_font = _fs_unload_font;
- pfont->unload_glyphs = NULL;
-
- /* set the FPE private information */
- fsd->format = format;
- fsd->fmask = fmask;
- fsd->name = (char *) (fsd + 1);
- memcpy (fsd->name, name, namelen);
- fsd->name[namelen] = '\0';
- fsd->fontid = GetNewFontClientID ();
-
- /* save the ID */
- if (!StoreFontClientFont(pfont, fsd->fontid))
- {
- free (fsfont);
- DestroyFontRec (pfont);
- return 0;
- }
-
- return pfont;
-}
-
-pointer
-fs_alloc_glyphs (FontPtr pFont, int size)
-{
- FSGlyphPtr glyphs;
- FSFontPtr fsfont = (FSFontPtr) pFont->fontPrivate;
-
- glyphs = malloc (sizeof (FSGlyphRec) + size);
- glyphs->next = fsfont->glyphs;
- fsfont->glyphs = glyphs;
- return (pointer) (glyphs + 1);
-}
+/*
+ * Copyright 1990 Network Computing Devices
+ *
+ * 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, and that the name of Network Computing Devices not be used
+ * in advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. Network Computing Devices
+ * makes no representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied warranty.
+ *
+ * NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+ * IN NO EVENT SHALL NETWORK COMPUTING DEVICES 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.
+ *
+ * Author: Dave Lemke, Network Computing Devices, Inc
+ */
+/*
+ * FS data conversion
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/X.h>
+#include <X11/Xtrans/Xtrans.h>
+#include <X11/Xpoll.h>
+#include <X11/fonts/FS.h>
+#include <X11/fonts/FSproto.h>
+#include <X11/fonts/fontmisc.h>
+#include <X11/fonts/fontstruct.h>
+#include "fservestr.h"
+#include <X11/fonts/fontutil.h>
+#include "fslibos.h"
+
+extern char _fs_glyph_undefined;
+extern char _fs_glyph_requested;
+
+/*
+ * converts data from font server form to X server form
+ */
+
+void
+_fs_convert_char_info(fsXCharInfo *src, xCharInfo *dst)
+{
+ dst->ascent = src->ascent;
+ dst->descent = src->descent;
+ dst->leftSideBearing = src->left;
+ dst->rightSideBearing = src->right;
+ dst->characterWidth = src->width;
+ dst->attributes = src->attributes;
+}
+
+void
+_fs_init_fontinfo(FSFpePtr conn, FontInfoPtr pfi)
+{
+ if (conn->fsMajorVersion == 1) {
+ unsigned short n;
+ n = pfi->firstCol;
+ pfi->firstCol = pfi->firstRow;
+ pfi->firstRow = n;
+ n = pfi->lastCol;
+ pfi->lastCol = pfi->lastRow;
+ pfi->lastRow = n;
+ pfi->defaultCh = ((pfi->defaultCh >> 8) & 0xff)
+ + ((pfi->defaultCh & 0xff) << 8);
+ }
+
+ if (FontCouldBeTerminal (pfi))
+ {
+ pfi->terminalFont = TRUE;
+ pfi->minbounds.ascent = pfi->fontAscent;
+ pfi->minbounds.descent = pfi->fontDescent;
+ pfi->minbounds.leftSideBearing = 0;
+ pfi->minbounds.rightSideBearing = pfi->minbounds.characterWidth;
+ pfi->maxbounds = pfi->minbounds;
+ }
+
+ FontComputeInfoAccelerators (pfi);
+}
+
+int
+_fs_convert_props(fsPropInfo *pi, fsPropOffset *po, pointer pd,
+ FontInfoPtr pfi)
+{
+ FontPropPtr dprop;
+ int i,
+ nprops;
+ char *is_str;
+ fsPropOffset local_off;
+ char *off_adr;
+ char *pdc = pd;
+
+/* stolen from server/include/resource.h */
+#define BAD_RESOURCE 0xe0000000
+
+ nprops = pfi->nprops = pi->num_offsets;
+
+ if (nprops < 0
+ || nprops > SIZE_MAX/(sizeof(FontPropRec) + sizeof(char)))
+ return -1;
+
+ dprop = malloc(sizeof(FontPropRec) * nprops + sizeof (char) * nprops);
+ if (!dprop)
+ return -1;
+
+ is_str = (char *) (dprop + nprops);
+ pfi->props = dprop;
+ pfi->isStringProp = is_str;
+
+ off_adr = (char *)po;
+ for (i = 0; i < nprops; i++, dprop++, is_str++)
+ {
+ memcpy(&local_off, off_adr, SIZEOF(fsPropOffset));
+ dprop->name = MakeAtom(&pdc[local_off.name.position],
+ local_off.name.length, 1);
+ if (local_off.type != PropTypeString) {
+ *is_str = FALSE;
+ dprop->value = local_off.value.position;
+ } else {
+ *is_str = TRUE;
+ dprop->value = (INT32) MakeAtom(&pdc[local_off.value.position],
+ local_off.value.length, 1);
+ if (dprop->value == BAD_RESOURCE)
+ {
+ free (pfi->props);
+ pfi->nprops = 0;
+ pfi->props = 0;
+ pfi->isStringProp = 0;
+ return -1;
+ }
+ }
+ off_adr += SIZEOF(fsPropOffset);
+ }
+
+ return nprops;
+}
+
+void
+_fs_free_props (FontInfoPtr pfi)
+{
+ if (pfi->props)
+ {
+ free (pfi->props);
+ pfi->nprops = 0;
+ pfi->props = 0;
+ }
+}
+
+int
+_fs_convert_lfwi_reply(FSFpePtr conn, FontInfoPtr pfi,
+ fsListFontsWithXInfoReply *fsrep,
+ fsPropInfo *pi, fsPropOffset *po, pointer pd)
+{
+ fsUnpack_XFontInfoHeader(fsrep, pfi);
+ _fs_init_fontinfo(conn, pfi);
+
+ if (_fs_convert_props(pi, po, pd, pfi) == -1)
+ return AllocError;
+
+ return Successful;
+}
+
+
+#define ENCODING_UNDEFINED(enc) \
+ ((enc)->bits == &_fs_glyph_undefined ? \
+ TRUE : \
+ (access_done = access_done && (enc)->bits != &_fs_glyph_requested, \
+ FALSE))
+
+#define GLYPH_UNDEFINED(loc) ENCODING_UNDEFINED(encoding + (loc))
+
+/*
+ * figures out what glyphs to request
+ *
+ * Includes logic to attempt to reduce number of round trips to the font
+ * server: when a glyph is requested, fs_build_range() requests a
+ * 16-glyph range of glyphs that contains the requested glyph. This is
+ * predicated on the belief that using a glyph increases the chances
+ * that nearby glyphs will be used: a good assumption for phonetic
+ * alphabets, but a questionable one for ideographic/pictographic ones.
+ */
+/* ARGSUSED */
+int
+fs_build_range(FontPtr pfont, Bool range_flag, unsigned int count,
+ int item_size, unsigned char *data, int *nranges,
+ fsRange **ranges)
+{
+ FSFontDataPtr fsd = (FSFontDataPtr) (pfont->fpePrivate);
+ FSFontPtr fsfont = (FSFontPtr) (pfont->fontPrivate);
+ register CharInfoPtr encoding = fsfont->encoding;
+ FontInfoPtr pfi = &(pfont->info);
+ fsRange range;
+ int access_done = TRUE;
+ int err;
+ register unsigned long firstrow, lastrow, firstcol, lastcol;
+ register unsigned long row;
+ register unsigned long col;
+ register unsigned long loc;
+
+ if (!fsd->glyphs_to_get)
+ return AccessDone;
+
+ firstrow = pfi->firstRow;
+ lastrow = pfi->lastRow;
+ firstcol = pfi->firstCol;
+ lastcol = pfi->lastCol;
+
+ /* Make sure we have default char */
+ if (fsfont->pDefault && ENCODING_UNDEFINED(fsfont->pDefault))
+ {
+ loc = fsfont->pDefault - encoding;
+ row = loc / (lastcol - firstcol + 1) + firstrow;
+ col = loc % (lastcol - firstcol + 1) + firstcol;
+
+ range.min_char_low = range.max_char_low = col;
+ range.min_char_high = range.max_char_high = row;
+
+ if ((err = add_range(&range, nranges, ranges, FALSE)) !=
+ Successful) return err;
+ encoding[loc].bits = &_fs_glyph_requested;
+ access_done = FALSE;
+ }
+
+ if (!range_flag && item_size == 1)
+ {
+ if (firstrow != 0) return AccessDone;
+ while (count--)
+ {
+ col = *data++;
+ if (col >= firstcol && col <= lastcol &&
+ GLYPH_UNDEFINED(col - firstcol))
+ {
+ int col1, col2;
+ col1 = col & 0xf0;
+ col2 = col1 + 15;
+ if (col1 < firstcol) col1 = firstcol;
+ if (col2 > lastcol) col2 = lastcol;
+ /* Collect a 16-glyph neighborhood containing the requested
+ glyph... should in most cases reduce the number of round
+ trips to the font server. */
+ for (col = col1; col <= col2; col++)
+ {
+ if (!GLYPH_UNDEFINED(col - firstcol)) continue;
+ range.min_char_low = range.max_char_low = col;
+ range.min_char_high = range.max_char_high = 0;
+ if ((err = add_range(&range, nranges, ranges, FALSE)) !=
+ Successful) return err;
+ encoding[col - firstcol].bits = &_fs_glyph_requested;
+ access_done = FALSE;
+ }
+ }
+ }
+ }
+ else
+ {
+ fsRange fullrange[1];
+
+ if (range_flag && count == 0)
+ {
+ count = 2;
+ data = (unsigned char *)fullrange;
+ fullrange[0].min_char_high = firstrow;
+ fullrange[0].min_char_low = firstcol;
+ fullrange[0].max_char_high = lastrow;
+ fullrange[0].max_char_low = lastcol;
+ }
+
+ while (count--)
+ {
+ int row1, col1, row2, col2;
+ row1 = row2 = *data++;
+ col1 = col2 = *data++;
+ if (range_flag)
+ {
+ if (count)
+ {
+ row2 = *data++;
+ col2 = *data++;
+ count--;
+ }
+ else
+ {
+ row2 = lastrow;
+ col2 = lastcol;
+ }
+ if (row1 < firstrow) row1 = firstrow;
+ if (row2 > lastrow) row2 = lastrow;
+ if (col1 < firstcol) col1 = firstcol;
+ if (col2 > lastcol) col2 = lastcol;
+ }
+ else
+ {
+ if (row1 < firstrow || row1 > lastrow ||
+ col1 < firstcol || col1 > lastcol)
+ continue;
+ }
+ for (row = row1; row <= row2; row++)
+ {
+ expand_glyph_range: ;
+ loc = (row - firstrow) * (lastcol + 1 - firstcol) +
+ (col1 - firstcol);
+ for (col = col1; col <= col2; col++, loc++)
+ {
+ if (GLYPH_UNDEFINED(loc))
+ {
+ if (row1 == row2 &&
+ (((col1 & 0xf) && col1 > firstcol) ||
+ (col2 & 0xf) != 0xf) && (col2 < lastcol))
+ {
+ /* If we're loading from a single row, expand
+ range of glyphs loaded to a multiple of
+ a 16-glyph range -- attempt to reduce number
+ of round trips to the font server. */
+ col1 &= 0xf0;
+ col2 = (col2 & 0xf0) + 15;
+ if (col1 < firstcol) col1 = firstcol;
+ if (col2 > lastcol) col2 = lastcol;
+ goto expand_glyph_range;
+ }
+ range.min_char_low = range.max_char_low = col;
+ range.min_char_high = range.max_char_high = row;
+ if ((err = add_range(&range, nranges, ranges, FALSE)) !=
+ Successful) return err;
+ encoding[loc].bits = &_fs_glyph_requested;
+ access_done = FALSE;
+ }
+ }
+ }
+ }
+ }
+
+ return access_done ?
+ AccessDone :
+ Successful;
+}
+
+#undef GLYPH_UNDEFINED
+#undef ENCODING_UNDEFINED
+
+
+/* _fs_clean_aborted_loadglyphs(): Undoes the changes to the encoding array
+ performed by fs_build_range(); for use if the associated LoadGlyphs
+ requests needs to be cancelled. */
+
+void
+_fs_clean_aborted_loadglyphs(FontPtr pfont, int num_expected_ranges,
+ fsRange *expected_ranges)
+{
+ register FSFontPtr fsfont;
+ register int i;
+
+ fsfont = (FSFontPtr) pfont->fontPrivate;
+ if (fsfont->encoding)
+ {
+ fsRange full_range[1];
+ if (!num_expected_ranges)
+ {
+ full_range[0].min_char_low = pfont->info.firstCol;
+ full_range[0].min_char_high = pfont->info.firstRow;
+ full_range[0].max_char_low = pfont->info.lastCol;
+ full_range[0].max_char_high = pfont->info.lastRow;
+ num_expected_ranges = 1;
+ expected_ranges = full_range;
+ }
+
+ for (i = 0; i < num_expected_ranges; i++)
+ {
+ int row, col;
+ for (row = expected_ranges[i].min_char_high;
+ row <= expected_ranges[i].max_char_high;
+ row++)
+ {
+ register CharInfoPtr encoding = fsfont->encoding +
+ ((row - pfont->info.firstRow) *
+ (pfont->info.lastCol -
+ pfont->info.firstCol + 1) +
+ expected_ranges[i].min_char_low -
+ pfont->info.firstCol);
+ for (col = expected_ranges[i].min_char_low;
+ col <= expected_ranges[i].max_char_low;
+ encoding++, col++)
+ {
+ if (encoding->bits == &_fs_glyph_requested)
+ encoding->bits = &_fs_glyph_undefined;
+ }
+ }
+ }
+ }
+}
+
+static int
+_fs_get_glyphs(FontPtr pFont, unsigned long count, unsigned char *chars,
+ FontEncoding charEncoding,
+ unsigned long *glyphCount, /* RETURN */
+ CharInfoPtr *glyphs) /* RETURN */
+{
+ FSFontPtr fsdata;
+ unsigned int firstCol;
+ register unsigned int numCols;
+ unsigned int firstRow;
+ unsigned int numRows;
+ CharInfoPtr *glyphsBase;
+ register unsigned int c;
+ register CharInfoPtr pci;
+ unsigned int r;
+ CharInfoPtr encoding;
+ CharInfoPtr pDefault;
+ FSFontDataPtr fsd = (FSFontDataPtr) pFont->fpePrivate;
+ int err = Successful;
+
+ fsdata = (FSFontPtr) pFont->fontPrivate;
+ encoding = fsdata->encoding;
+ pDefault = fsdata->pDefault;
+ firstCol = pFont->info.firstCol;
+ numCols = pFont->info.lastCol - firstCol + 1;
+ glyphsBase = glyphs;
+
+ /* In this age of glyph caching, any glyphs gotten through this
+ procedure should already be loaded. If they are not, we are
+ dealing with someone (perhaps a ddx driver optimizing a font)
+ that doesn't understand the finer points of glyph caching. The
+ CHECK_ENCODING macro checks for this condition... if found, it
+ calls fs_load_all_glyphs(), which corrects it. Since the caller
+ of this code will not know how to handle a return value of
+ Suspended, the fs_load_all_glyphs() procedure will block and
+ freeze the server until the load operation is done. Moral: the
+ glyphCachingMode flag really must indicate the capabilities of
+ the ddx drivers. */
+
+#define CHECK_ENCODING(cnum) \
+ ( pci = encoding + (cnum), \
+ fsd->glyphs_to_get ? \
+ ( pci->bits == &_fs_glyph_undefined || pci->bits == &_fs_glyph_requested ? \
+ ((err = fs_load_all_glyphs(pFont)), pci) : \
+ pci ) : \
+ pci )
+
+ switch (charEncoding) {
+
+ case Linear8Bit:
+ case TwoD8Bit:
+ if (pFont->info.firstRow > 0)
+ break;
+ if (pFont->info.allExist && pDefault) {
+ while (err == Successful && count--) {
+ c = (*chars++) - firstCol;
+ if (c < numCols)
+ *glyphs++ = CHECK_ENCODING(c);
+ else
+ *glyphs++ = pDefault;
+ }
+ } else {
+ while (err == Successful && count--) {
+ c = (*chars++) - firstCol;
+ if (c < numCols && CHECK_ENCODING(c)->bits)
+ *glyphs++ = pci;
+ else if (pDefault)
+ *glyphs++ = pDefault;
+ }
+ }
+ break;
+ case Linear16Bit:
+ if (pFont->info.allExist && pDefault) {
+ while (err == Successful && count--) {
+ c = *chars++ << 8;
+ c = (c | *chars++) - firstCol;
+ if (c < numCols)
+ *glyphs++ = CHECK_ENCODING(c);
+ else
+ *glyphs++ = pDefault;
+ }
+ } else {
+ while (err == Successful && count--) {
+ c = *chars++ << 8;
+ c = (c | *chars++) - firstCol;
+ if (c < numCols && CHECK_ENCODING(c)->bits)
+ *glyphs++ = pci;
+ else if (pDefault)
+ *glyphs++ = pDefault;
+ }
+ }
+ break;
+
+ case TwoD16Bit:
+ firstRow = pFont->info.firstRow;
+ numRows = pFont->info.lastRow - firstRow + 1;
+ while (err == Successful && count--) {
+ r = (*chars++) - firstRow;
+ c = (*chars++) - firstCol;
+ if (r < numRows && c < numCols &&
+ CHECK_ENCODING(r * numCols + c)->bits)
+ *glyphs++ = pci;
+ else if (pDefault)
+ *glyphs++ = pDefault;
+ }
+ break;
+ }
+ *glyphCount = glyphs - glyphsBase;
+ return err;
+}
+
+
+static int
+_fs_get_metrics(FontPtr pFont, unsigned long count, unsigned char *chars,
+ FontEncoding charEncoding,
+ unsigned long *glyphCount, /* RETURN */
+ xCharInfo **glyphs) /* RETURN */
+{
+ FSFontPtr fsdata;
+ unsigned int firstCol;
+ register unsigned int numCols;
+ unsigned int firstRow;
+ unsigned int numRows;
+ xCharInfo **glyphsBase;
+ register unsigned int c;
+ unsigned int r;
+ CharInfoPtr encoding;
+ CharInfoPtr pDefault;
+
+ fsdata = (FSFontPtr) pFont->fontPrivate;
+ encoding = fsdata->inkMetrics;
+ pDefault = fsdata->pDefault;
+ /* convert default bitmap metric to default ink metric */
+ if (pDefault)
+ pDefault = encoding + (pDefault - fsdata->encoding);
+ firstCol = pFont->info.firstCol;
+ numCols = pFont->info.lastCol - firstCol + 1;
+ glyphsBase = glyphs;
+
+
+ /* XXX - this should be much smarter */
+ /* make sure the glyphs are there */
+ switch (charEncoding) {
+
+ case Linear8Bit:
+ case TwoD8Bit:
+ if (pFont->info.firstRow > 0)
+ break;
+ if (pFont->info.allExist && pDefault) {
+ while (count--) {
+ c = (*chars++) - firstCol;
+ if (c < numCols)
+ *glyphs++ = (xCharInfo *)&encoding[c];
+ else
+ *glyphs++ = (xCharInfo *)pDefault;
+ }
+ } else {
+ while (count--) {
+ c = (*chars++) - firstCol;
+ if (c < numCols)
+ *glyphs++ = (xCharInfo *)(encoding + c);
+ else if (pDefault)
+ *glyphs++ = (xCharInfo *)pDefault;
+ }
+ }
+ break;
+ case Linear16Bit:
+ if (pFont->info.allExist && pDefault) {
+ while (count--) {
+ c = *chars++ << 8;
+ c = (c | *chars++) - firstCol;
+ if (c < numCols)
+ *glyphs++ = (xCharInfo *)(encoding + c);
+ else
+ *glyphs++ = (xCharInfo *)pDefault;
+ }
+ } else {
+ while (count--) {
+ c = *chars++ << 8;
+ c = (c | *chars++) - firstCol;
+ if (c < numCols)
+ *glyphs++ = (xCharInfo *)(encoding + c);
+ else if (pDefault)
+ *glyphs++ = (xCharInfo *)pDefault;
+ }
+ }
+ break;
+
+ case TwoD16Bit:
+ firstRow = pFont->info.firstRow;
+ numRows = pFont->info.lastRow - firstRow + 1;
+ while (count--) {
+ r = (*chars++) - firstRow;
+ c = (*chars++) - firstCol;
+ if (r < numRows && c < numCols)
+ *glyphs++ = (xCharInfo *)(encoding + (r * numCols + c));
+ else if (pDefault)
+ *glyphs++ = (xCharInfo *)pDefault;
+ }
+ break;
+ }
+ *glyphCount = glyphs - glyphsBase;
+ return Successful;
+}
+
+
+static void
+_fs_unload_font(FontPtr pfont)
+{
+ FSFontPtr fsdata = (FSFontPtr) pfont->fontPrivate;
+ FSFontDataPtr fsd = (FSFontDataPtr) pfont->fpePrivate;
+ CharInfoPtr encoding = fsdata->encoding;
+ FSGlyphPtr glyphs;
+
+ /*
+ * fsdata points at FSFontRec, FSFontDataRec and name
+ */
+ if (encoding)
+ free(encoding);
+
+ while ((glyphs = fsdata->glyphs))
+ {
+ fsdata->glyphs = glyphs->next;
+ free (glyphs);
+ }
+
+ /* XXX we may get called after the resource DB has been cleaned out */
+ if (find_old_font(fsd->fontid))
+ DeleteFontClientID (fsd->fontid);
+
+ _fs_free_props (&pfont->info);
+
+ free(fsdata);
+
+ DestroyFontRec(pfont);
+}
+
+FontPtr
+fs_create_font (FontPathElementPtr fpe,
+ char *name,
+ int namelen,
+ fsBitmapFormat format,
+ fsBitmapFormatMask fmask)
+{
+ FontPtr pfont;
+ FSFontPtr fsfont;
+ FSFontDataPtr fsd;
+ int bit, byte, scan, glyph;
+
+ pfont = CreateFontRec ();
+ if (!pfont)
+ return 0;
+ fsfont = malloc (sizeof (FSFontRec) + sizeof (FSFontDataRec) + namelen + 1);
+ if (!fsfont)
+ {
+ DestroyFontRec (pfont);
+ return 0;
+ }
+ fsd = (FSFontDataPtr) (fsfont + 1);
+ bzero((char *) fsfont, sizeof(FSFontRec));
+ bzero((char *) fsd, sizeof(FSFontDataRec));
+
+ pfont->fpe = fpe;
+ pfont->fontPrivate = (pointer) fsfont;
+ pfont->fpePrivate = (pointer) fsd;
+
+ /* These font components will be needed in packGlyphs */
+ CheckFSFormat(format, BitmapFormatMaskBit |
+ BitmapFormatMaskByte |
+ BitmapFormatMaskScanLineUnit |
+ BitmapFormatMaskScanLinePad,
+ &bit,
+ &byte,
+ &scan,
+ &glyph,
+ NULL);
+ pfont->format = format;
+ pfont->bit = bit;
+ pfont->byte = byte;
+ pfont->scan = scan;
+ pfont->glyph = glyph;
+
+ pfont->info.nprops = 0;
+ pfont->info.props = 0;
+ pfont->info.isStringProp = 0;
+
+ /* set font function pointers */
+ pfont->get_glyphs = _fs_get_glyphs;
+ pfont->get_metrics = _fs_get_metrics;
+ pfont->unload_font = _fs_unload_font;
+ pfont->unload_glyphs = NULL;
+
+ /* set the FPE private information */
+ fsd->format = format;
+ fsd->fmask = fmask;
+ fsd->name = (char *) (fsd + 1);
+ memcpy (fsd->name, name, namelen);
+ fsd->name[namelen] = '\0';
+ fsd->fontid = GetNewFontClientID ();
+
+ /* save the ID */
+ if (!StoreFontClientFont(pfont, fsd->fontid))
+ {
+ free (fsfont);
+ DestroyFontRec (pfont);
+ return 0;
+ }
+
+ return pfont;
+}
+
+pointer
+fs_alloc_glyphs (FontPtr pFont, int size)
+{
+ FSGlyphPtr glyphs;
+ FSFontPtr fsfont = (FSFontPtr) pFont->fontPrivate;
+
+ glyphs = malloc (sizeof (FSGlyphRec) + size);
+ glyphs->next = fsfont->glyphs;
+ fsfont->glyphs = glyphs;
+ return (pointer) (glyphs + 1);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 22:08:10 +0000