X-Git-Url: https://git.sesse.net/?p=rdpsrv;a=blobdiff_plain;f=Xserver%2Flib%2Ffont%2Ffc%2Ffsconvert.c;fp=Xserver%2Flib%2Ffont%2Ffc%2Ffsconvert.c;h=346b0b41b893025b5efb20c3bf0a4433ca3f1532;hp=0000000000000000000000000000000000000000;hb=b6e6afccf37f4ad0515ef2a698f714fdf1bf23b3;hpb=e3340a110a3b01756b8e67531395a33b40a17d37 diff --git a/Xserver/lib/font/fc/fsconvert.c b/Xserver/lib/font/fc/fsconvert.c new file mode 100644 index 0000000..346b0b4 --- /dev/null +++ b/Xserver/lib/font/fc/fsconvert.c @@ -0,0 +1,703 @@ +/* $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 +#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; +}