+++ /dev/null
-/* $XConsortium: fsconvert.c,v 1.17 94/02/14 17:47:35 gildea Exp $ */
-/*
- * 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
- */
-
-#include <X11/X.h>
-#include "FS.h"
-#include "FSproto.h"
-#include "fontmisc.h"
-#include "fontstruct.h"
-#include "fservestr.h"
-
-extern char _fs_glyph_undefined;
-extern char _fs_glyph_requested;
-extern char _fs_glyph_zero_length;
-
-extern int _fs_load_glyphs();
-
-/*
- * converts data from font server form to X server form
- */
-
-void
-_fs_convert_char_info(src, dst)
- 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(conn, pfi)
- 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(pi, po, pd, pfi)
- fsPropInfo *pi;
- fsPropOffset *po;
- pointer pd;
- FontInfoPtr pfi;
-{
- FontPropPtr dprop;
- int i,
- nprops;
- char *is_str;
- fsPropOffset local_off;
- char *off_adr;
-
-/* stolen from server/include/resource.h */
-#define BAD_RESOURCE 0xe0000000
-
- nprops = pfi->nprops = pi->num_offsets;
-
- dprop = (FontPropPtr) xalloc(sizeof(FontPropRec) * nprops);
- is_str = (char *) xalloc(sizeof(char) * nprops);
- if (!dprop || !is_str) {
- xfree(is_str);
- xfree(dprop);
- return -1;
- }
- 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(&pd[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(&pd[local_off.value.position],
- local_off.value.length, 1);
- if (dprop->value == BAD_RESOURCE)
- {
- xfree (pfi->props);
- xfree (pfi->isStringProp);
- pfi->props = 0;
- pfi->isStringProp = 0;
- return -1;
- }
- }
- off_adr += SIZEOF(fsPropOffset);
- }
-
- return nprops;
-}
-
-int
-_fs_convert_lfwi_reply(conn, pfi, fsrep, pi, po, pd)
- 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(pfont, range_flag, count, item_size, data, nranges, ranges)
- FontPtr pfont;
- Bool range_flag;
- register unsigned int count;
- int item_size;
- register 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. */
-
-_fs_clean_aborted_loadglyphs(pfont, num_expected_ranges, expected_ranges)
- FontPtr pfont;
- int num_expected_ranges;
- fsRange *expected_ranges;
-{
- register FSFontPtr fsfont;
- register FSFontDataRec *fsd;
- register int i;
-
- fsfont = (FSFontPtr) pfont->fontPrivate;
- fsd = (FSFontDataRec *) pfont->fpePrivate;
- 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;
- }
- }
- }
- }
-}
-
-
-/*
- * figures out what extents to request
- * this is where lots of extra
- * smarts wants to live
- */
-/* ARGSUSED */
-int
-_fs_check_extents(pfont, flags, nranges, range, blockrec)
- FontPtr pfont;
- Mask flags;
- int nranges;
- fsRange *range;
- FSBlockDataPtr blockrec;
-{
-/* XXX -- either fill in the requested info if we have it somewhere
- * and return AccessDone, or else return Successful
- */
- return Successful;
-}
-
-/*
- * figures out what glyphs to request
- * this is where lots of extra
- * smarts wants to live
- */
-/* ARGSUSED */
-int
-_fs_check_bitmaps(pfont, format, flags, nranges, range, blockrec)
- FontPtr pfont;
- fsBitmapFormat format;
- Mask flags;
- int nranges;
- fsRange *range;
- FSBlockDataPtr blockrec;
-{
-/* XXX -- either fill in the requested info if we have it somewhere
- * and return AccessDone, or else return Successful
- */
- return Successful;
-}
-
-int
-_fs_get_glyphs(pFont, count, chars, charEncoding, glyphCount, glyphs)
- FontPtr pFont;
- unsigned long count;
- register 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 itemSize;
- 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;
-
-
- if (charEncoding == Linear8Bit || charEncoding == TwoD8Bit)
- itemSize = 1;
- else
- itemSize = 2;
-
- /* 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(pFont, count, chars, charEncoding, glyphCount, glyphs)
- FontPtr pFont;
- unsigned long count;
- register 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;
- FSFontDataPtr fsd = (FSFontDataPtr) pFont->fpePrivate;
- int itemSize;
- int err = Successful;
-
- fsdata = (FSFontPtr) pFont->fontPrivate;
- encoding = fsdata->inkMetrics;
- pDefault = fsdata->pDefault;
- firstCol = pFont->info.firstCol;
- numCols = pFont->info.lastCol - firstCol + 1;
- glyphsBase = glyphs;
-
-
- /* XXX - this should be much smarter */
- /* make sure the glyphs are there */
- if (charEncoding == Linear8Bit || charEncoding == TwoD8Bit)
- itemSize = 1;
- else
- itemSize = 2;
-
- 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;
-}
-
-
-void
-_fs_unload_font(pfont)
- FontPtr pfont;
-{
- FSFontPtr fsdata = (FSFontPtr) pfont->fontPrivate;
-
- if (fsdata->encoding)
- {
- register int i;
- register CharInfoPtr encoding = fsdata->encoding;
- FontInfoPtr pfi = &pfont->info;
- for (i = (pfi->lastCol - pfi->firstCol + 1) *
- (pfi->lastRow - pfi->firstRow + 1);
- i > 0;
- encoding++, i--)
- {
- if (encoding->bits &&
- encoding->bits != &_fs_glyph_undefined &&
- encoding->bits != &_fs_glyph_requested &&
- encoding->bits != &_fs_glyph_zero_length)
- xfree(encoding->bits);
- }
- }
- xfree(fsdata->encoding);
- xfree(fsdata);
-
- pfont->fontPrivate = 0;
-}
-
-void
-_fs_init_font(pfont)
- FontPtr pfont;
-{
- /* 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 = (void (*)())0;
-}
projects / rdpsrv / blobdiff