diff options
author | Liang Qi <liang.qi@nokia.com> | 2011-12-07 13:45:19 (GMT) |
---|---|---|
committer | Liang Qi <liang.qi@nokia.com> | 2011-12-07 13:45:19 (GMT) |
commit | 3a4f6f7884c9ea704890cd392bb5a211d2eb5701 (patch) | |
tree | 2be34e088894d59301c08c5f66dbbe2968ddceea /src/3rdparty/harfbuzz | |
parent | 8a390046adddb8df3ddcf3a421f6f547e6cfe7aa (diff) | |
parent | f485ac02b057cb076c965c3cd1bd9c78aaa5a696 (diff) | |
download | Qt-3a4f6f7884c9ea704890cd392bb5a211d2eb5701.zip Qt-3a4f6f7884c9ea704890cd392bb5a211d2eb5701.tar.gz Qt-3a4f6f7884c9ea704890cd392bb5a211d2eb5701.tar.bz2 |
Merge remote-tracking branch 'origin/4.7' into qt-4.8-from-4.7
Conflicts:
src/s60main/newallocator_hook.cpp
Diffstat (limited to 'src/3rdparty/harfbuzz')
-rw-r--r-- | src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h | 1 | ||||
-rw-r--r-- | src/3rdparty/harfbuzz/src/harfbuzz-shaper.cpp | 24 | ||||
-rw-r--r-- | src/3rdparty/harfbuzz/src/harfbuzz-thai.c | 367 |
3 files changed, 352 insertions, 40 deletions
diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h b/src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h index e1360c7..05214e7 100644 --- a/src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h +++ b/src/3rdparty/harfbuzz/src/harfbuzz-shaper-private.h @@ -111,6 +111,7 @@ extern HB_Bool HB_HangulShape(HB_ShaperItem *shaper_item); extern HB_Bool HB_MyanmarShape(HB_ShaperItem *shaper_item); extern HB_Bool HB_KhmerShape(HB_ShaperItem *shaper_item); extern HB_Bool HB_IndicShape(HB_ShaperItem *shaper_item); +extern HB_Bool HB_ThaiShape(HB_ShaperItem *shaper_item); extern void HB_TibetanAttributes(HB_Script script, const HB_UChar16 *string, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes); diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-shaper.cpp b/src/3rdparty/harfbuzz/src/harfbuzz-shaper.cpp index 7f4bb0c..0734442 100644 --- a/src/3rdparty/harfbuzz/src/harfbuzz-shaper.cpp +++ b/src/3rdparty/harfbuzz/src/harfbuzz-shaper.cpp @@ -630,7 +630,7 @@ const HB_ScriptEngine HB_ScriptEngines[] = { // Sinhala { HB_IndicShape, HB_IndicAttributes }, // Thai - { HB_BasicShape, HB_ThaiAttributes }, + { HB_ThaiShape, HB_ThaiAttributes }, // Lao { HB_BasicShape, 0 }, // Tibetan @@ -1337,18 +1337,18 @@ HB_Bool HB_OpenTypePosition(HB_ShaperItem *item, int availableGlyphs, HB_Bool do #ifdef OT_DEBUG if (doLogClusters) { - DEBUG("log clusters after shaping:"); - for (int j = 0; j < length; j++) - DEBUG(" log[%d] = %d", j, item->log_clusters[j]); + DEBUG("log clusters after shaping:\n"); + for (unsigned int j = 0; j < item->item.length; j++) + DEBUG(" log[%d] = %d\n", j, item->log_clusters[j]); } - DEBUG("final glyphs:"); - for (int i = 0; i < (int)hb_buffer->in_length; ++i) - DEBUG(" glyph=%4x char_index=%d mark: %d cmp: %d, clusterStart: %d advance=%d/%d offset=%d/%d", - glyphs[i].glyph, hb_buffer->in_string[i].cluster, glyphs[i].attributes.mark, - glyphs[i].attributes.combiningClass, glyphs[i].attributes.clusterStart, - glyphs[i].advance.x.toInt(), glyphs[i].advance.y.toInt(), - glyphs[i].offset.x.toInt(), glyphs[i].offset.y.toInt()); - DEBUG("-----------------------------------------"); + DEBUG("final glyphs:\n"); + for (unsigned int i = 0; i < item->num_glyphs; ++i) + DEBUG(" glyph=%4x char_index=%d mark: %d cmp: %d, clusterStart: %d advance=%d offset=%d/%d\n", + glyphs[i], face->buffer->in_string[i].cluster, attributes[i].mark, + attributes[i].combiningClass, attributes[i].clusterStart, + item->advances[i] >> 6, + item->offsets[i].x >> 6, item->offsets[i].y >> 6); + DEBUG("-----------------------------------------\n"); #endif return true; } diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-thai.c b/src/3rdparty/harfbuzz/src/harfbuzz-thai.c index e80e2c5..262cee6 100644 --- a/src/3rdparty/harfbuzz/src/harfbuzz-thai.c +++ b/src/3rdparty/harfbuzz/src/harfbuzz-thai.c @@ -29,15 +29,41 @@ #include <assert.h> #include <stdio.h> -typedef int (*th_brk_def)(const char*, int[], int); +#define LIBTHAI_MAJOR 0 + +/* + * if libthai changed please update these codes too. + */ +struct thcell_t { + unsigned char base; /**< base character */ + unsigned char hilo; /**< upper/lower vowel/diacritic */ + unsigned char top; /**< top-level mark */ +}; +typedef int (*th_brk_def) (const unsigned char*, int*, size_t); +typedef int (*th_render_cell_tis_def) (struct thcell_t cell, unsigned char res[], size_t res_sz, int is_decomp_am); +typedef int (*th_render_cell_win_def) (struct thcell_t cell, unsigned char res[], size_t res_sz, int is_decomp_am); +typedef int (*th_render_cell_mac_def) (struct thcell_t cell, unsigned char res[], size_t res_sz, int is_decomp_am); +typedef size_t (*th_next_cell_def) (const unsigned char *, size_t, struct thcell_t *, int); + +/* libthai releated function handles */ static th_brk_def th_brk = 0; -static int libthai_resolved = 0; +static th_next_cell_def th_next_cell = 0; +static th_render_cell_tis_def th_render_cell_tis = 0; +static th_render_cell_win_def th_render_cell_win = 0; +static th_render_cell_mac_def th_render_cell_mac = 0; -static void resolve_libthai() -{ - if (!th_brk) - th_brk = (th_brk_def)HB_Library_Resolve("thai", 0, "th_brk"); - libthai_resolved = 1; +static int init_libthai() { + if (!th_brk || !th_next_cell || !th_render_cell_tis || !th_render_cell_win || !th_render_cell_mac) { + th_brk = (th_brk_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_brk"); + th_next_cell = (th_next_cell_def)HB_Library_Resolve("thai", LIBTHAI_MAJOR, "th_next_cell"); + th_render_cell_tis = (th_render_cell_tis_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_render_cell_tis"); + th_render_cell_win = (th_render_cell_win_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_render_cell_win"); + th_render_cell_mac = (th_render_cell_mac_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_render_cell_mac"); + } + if (th_brk && th_next_cell && th_render_cell_tis && th_render_cell_win && th_render_cell_mac) + return 1; + else + return 0; } static void to_tis620(const HB_UChar16 *string, hb_uint32 len, const char *cstr) @@ -57,46 +83,329 @@ static void to_tis620(const HB_UChar16 *string, hb_uint32 len, const char *cstr) result[len] = 0; } -static void thaiWordBreaks(const HB_UChar16 *string, hb_uint32 len, HB_CharAttributes *attributes) +/* + * --------------------------------------------------------------------------- + * Thai Shaper / Attributes + * --------------------------------------------------------------------------- + */ + +/* + * USe basic_features prepare for future adding. + */ +#ifndef NO_OPENTYPE +static const HB_OpenTypeFeature thai_features[] = { + { HB_MAKE_TAG('c', 'c', 'm', 'p'), CcmpProperty }, + { HB_MAKE_TAG('l', 'i', 'g', 'a'), CcmpProperty }, + { HB_MAKE_TAG('c', 'l', 'i', 'g'), CcmpProperty }, + {0, 0} +}; +#endif + +/* TIS-to-Unicode glyph maps for characters 0x80-0xff */ +static int tis620_0[128] = { + /**/ 0, 0, 0, 0, 0, 0, 0, 0, + /**/ 0, 0, 0, 0, 0, 0, 0, 0, + /**/ 0, 0, 0, 0, 0, 0, 0, 0, + /**/ 0, 0, 0, 0, 0, 0, 0, 0, + 0x0020, 0x0e01, 0x0e02, 0x0e03, 0x0e04, 0x0e05, 0x0e06, 0x0e07, + 0x0e08, 0x0e09, 0x0e0a, 0x0e0b, 0x0e0c, 0x0e0d, 0x0e0e, 0x0e0f, + 0x0e10, 0x0e11, 0x0e12, 0x0e13, 0x0e14, 0x0e15, 0x0e16, 0x0e17, + 0x0e18, 0x0e19, 0x0e1a, 0x0e1b, 0x0e1c, 0x0e1d, 0x0e1e, 0x0e1f, + 0x0e20, 0x0e21, 0x0e22, 0x0e23, 0x0e24, 0x0e25, 0x0e26, 0x0e27, + 0x0e28, 0x0e29, 0x0e2a, 0x0e2b, 0x0e2c, 0x0e2d, 0x0e2e, 0x0e2f, + 0x0e30, 0x0e31, 0x0e32, 0x0e33, 0x0e34, 0x0e35, 0x0e36, 0x0e37, + 0x0e38, 0x0e39, 0x0e3a, 0, 0, 0, 0, 0x0e3f, + 0x0e40, 0x0e41, 0x0e42, 0x0e43, 0x0e44, 0x0e45, 0x0e46, 0x0e47, + 0x0e48, 0x0e49, 0x0e4a, 0x0e4b, 0x0e4c, 0x0e4d, 0x0e4e, 0x0e4f, + 0x0e50, 0x0e51, 0x0e52, 0x0e53, 0x0e54, 0x0e55, 0x0e56, 0x0e57, + 0x0e58, 0x0e59, 0x0e5a, 0x0e5b, 0, 0, 0, 0 +}; + +static int tis620_1[128] = { + 0xf89e, 0, 0, 0xf88c, 0xf88f, 0xf892, 0xf895, 0xf898, + 0xf88b, 0xf88e, 0xf891, 0xf894, 0xf897, 0, 0, 0xf899, + 0xf89a, 0, 0xf884, 0xf889, 0xf885, 0xf886, 0xf887, 0xf888, + 0xf88a, 0xf88d, 0xf890, 0xf893, 0xf896, 0, 0, 0, + /**/ 0, 0x0e01, 0x0e02, 0x0e03, 0x0e04, 0x0e05, 0x0e06, 0x0e07, + 0x0e08, 0x0e09, 0x0e0a, 0x0e0b, 0x0e0c, 0x0e0d, 0x0e0e, 0x0e0f, + 0x0e10, 0x0e11, 0x0e12, 0x0e13, 0x0e14, 0x0e15, 0x0e16, 0x0e17, + 0x0e18, 0x0e19, 0x0e1a, 0x0e1b, 0x0e1c, 0x0e1d, 0x0e1e, 0x0e1f, + 0x0e20, 0x0e21, 0x0e22, 0x0e23, 0x0e24, 0x0e25, 0x0e26, 0x0e27, + 0x0e28, 0x0e29, 0x0e2a, 0x0e2b, 0x0e2c, 0x0e2d, 0x0e2e, 0x0e2f, + 0x0e30, 0x0e31, 0x0e32, 0x0e33, 0x0e34, 0x0e35, 0x0e36, 0x0e37, + 0x0e38, 0x0e39, 0x0e3a, 0, 0, 0, 0, 0x0e3f, + 0x0e40, 0x0e41, 0x0e42, 0x0e43, 0x0e44, 0x0e45, 0x0e46, 0x0e47, + 0x0e48, 0x0e49, 0x0e4a, 0x0e4b, 0x0e4c, 0x0e4d, 0, 0x0e4f, + 0x0e50, 0x0e51, 0x0e52, 0x0e53, 0x0e54, 0x0e55, 0x0e56, 0x0e57, + 0x0e58, 0x0e59, 0, 0, 0xf89b, 0xf89c, 0xf89d, 0 +}; + +static int tis620_2[128] = { + 0xf700, 0xf701, 0xf702, 0xf703, 0xf704, 0x2026, 0xf705, 0xf706, + 0xf707, 0xf708, 0xf709, 0xf70a, 0xf70b, 0xf70c, 0xf70d, 0xf70e, + 0xf70f, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014, + 0xf710, 0xf711, 0xf712, 0xf713, 0xf714, 0xf715, 0xf716, 0xf717, + 0x00a0, 0x0e01, 0x0e02, 0x0e03, 0x0e04, 0x0e05, 0x0e06, 0x0e07, + 0x0e08, 0x0e09, 0x0e0a, 0x0e0b, 0x0e0c, 0x0e0d, 0x0e0e, 0x0e0f, + 0x0e10, 0x0e11, 0x0e12, 0x0e13, 0x0e14, 0x0e15, 0x0e16, 0x0e17, + 0x0e18, 0x0e19, 0x0e1a, 0x0e1b, 0x0e1c, 0x0e1d, 0x0e1e, 0x0e1f, + 0x0e20, 0x0e21, 0x0e22, 0x0e23, 0x0e24, 0x0e25, 0x0e26, 0x0e27, + 0x0e28, 0x0e29, 0x0e2a, 0x0e2b, 0x0e2c, 0x0e2d, 0x0e2e, 0x0e2f, + 0x0e30, 0x0e31, 0x0e32, 0x0e33, 0x0e34, 0x0e35, 0x0e36, 0x0e37, + 0x0e38, 0x0e39, 0x0e3a, 0, 0, 0, 0, 0x0e3f, + 0x0e40, 0x0e41, 0x0e42, 0x0e43, 0x0e44, 0x0e45, 0x0e46, 0x0e47, + 0x0e48, 0x0e49, 0x0e4a, 0x0e4b, 0x0e4c, 0x0e4d, 0x0e4e, 0x0e4f, + 0x0e50, 0x0e51, 0x0e52, 0x0e53, 0x0e54, 0x0e55, 0x0e56, 0x0e57, + 0x0e58, 0x0e59, 0x0e5a, 0x0e5b, 0xf718, 0xf719, 0xf71a, 0 +}; + +enum ThaiFontType { + TIS, + WIN, + MAC, +}; + +static int thai_get_glyph_index (ThaiFontType font_type, unsigned char c) +{ + switch (font_type){ + case TIS: return (c & 0x80) ? tis620_0[c & 0x7f] : c; + case WIN: return (c & 0x80) ? tis620_1[c & 0x7f] : c; + case MAC: return (c & 0x80) ? tis620_2[c & 0x7f] : c; + default: return 0; + } +} + +static int thai_contain_glyphs (HB_ShaperItem *shaper_item, const int glyph_map[128]) +{ + unsigned char c; + + for (c = 0; c < 0x80; c++) { + if ( glyph_map[c] ) { + if ( !shaper_item->font->klass->canRender (shaper_item->font, (HB_UChar16 *) &glyph_map[c], 1) ) + return 0; + } + } + return 1; +} + +static ThaiFontType getThaiFontType(HB_ShaperItem *shaper_item) +{ + if ( thai_contain_glyphs (shaper_item, tis620_2) ) + return MAC; + else if ( thai_contain_glyphs (shaper_item, tis620_1) ) + return WIN; + else + return TIS; +} + +/* + * convert to the correct display level of THAI vowels and marks. + */ +static HB_Bool HB_ThaiConvertStringToGlyphIndices (HB_ShaperItem *item) { char s[128]; char *cstr = s; - int brp[128]; - int *break_positions = brp; - hb_uint32 numbreaks; - hb_uint32 i; + const HB_UChar16 *string = item->string + item->item.pos; + const hb_uint32 len = item->item.length; + unsigned short *logClusters = item->log_clusters; + hb_uint32 i = 0, slen = 0; - if (!libthai_resolved) - resolve_libthai(); - - if (!th_brk) - return; + if (!init_libthai()) + return HB_BasicShape (item); if (len >= 128) cstr = (char *)malloc(len*sizeof(char) + 1); + if (!cstr) + return HB_BasicShape (item); + to_tis620(string, len, cstr); - numbreaks = th_brk(cstr, break_positions, 128); - if (numbreaks > 128) { - break_positions = (int *)malloc(numbreaks * sizeof(int)); - numbreaks = th_brk(cstr, break_positions, numbreaks); + /* Get font type */ + static ThaiFontType font_type; + static HB_Font itemFont; + if (itemFont != item->font) { + font_type = getThaiFontType (item); + itemFont = item->font; + } + + /* allocate temporary glyphs buffers */ + HB_STACKARRAY (HB_UChar16, glyphString, (item->item.length * 2)); + + while (i < item->item.length) { + struct thcell_t tis_cell; + unsigned char rglyphs[4]; + int cell_length; + int lgn = 0; + HB_Bool haveSaraAm = false; + + cell_length = th_next_cell ((const unsigned char *)cstr + i, len - i, &tis_cell, true); /* !item->fixedPitch); */ + haveSaraAm = (cstr[i + cell_length - 1] == (char)0xd3); + + /* set shaper item's log_clusters */ + logClusters[i] = slen; + for (int j = 1; j < cell_length; j++) { + logClusters[i + j] = logClusters[i]; + } + + /* Find Logical Glyphs by font type */ + switch (font_type) { + case TIS: lgn = th_render_cell_tis (tis_cell, rglyphs, sizeof(rglyphs) / sizeof(rglyphs[0]), true); break; + case WIN: lgn = th_render_cell_mac (tis_cell, rglyphs, sizeof(rglyphs) / sizeof(rglyphs[0]), true); break; + case MAC: lgn = th_render_cell_win (tis_cell, rglyphs, sizeof(rglyphs) / sizeof(rglyphs[0]), true); break; + } + + /* Add glyphs to glyphs string and setting some attributes */ + for (int lgi = 0; lgi < lgn; lgi++) { + if ( rglyphs[lgi] == 0xdd/*TH_BLANK_BASE_GLYPH*/ ) { + //if ( !item->fixedPitch ) { + glyphString[slen++] = C_DOTTED_CIRCLE; + item->attributes[slen-1].dontPrint = true; // FIXME this will hide all dotted circle + //} + } + else { + glyphString[slen++] = (HB_UChar16) thai_get_glyph_index (font_type, rglyphs[lgi]); + } + } + + if (haveSaraAm) { + logClusters[i + cell_length - 1] = slen - 1; // Set logClusters before NIKAHIT + if (tis_cell.top != 0) + logClusters[i + cell_length - 2] = slen - 2; // Set logClusters before NIKAHIT when tis_cell has top + if (logClusters[i + cell_length - 1] > slen) + logClusters[i + cell_length - 1] = 0; + } + + i += cell_length; + } + glyphString[slen] = (HB_UChar16) '\0'; + + /* for check, should reallocate space or not */ + HB_Bool spaceOK = (item->num_glyphs >= slen); + + /* Convert to Glyph indices */ + HB_Bool haveGlyphs = item->font->klass->convertStringToGlyphIndices ( + item->font, + glyphString, slen, + item->glyphs, &item->num_glyphs, + item->shaperFlags); + + HB_FREE_STACKARRAY (glyphString); + + if (len >= 128) + free(cstr); + + return (haveGlyphs && spaceOK); +} + +/* + * set the glyph attributes heuristically. + */ +static void HB_ThaiHeuristicSetGlyphAttributes (HB_ShaperItem *item) +{ + /* Set Glyph Attributes */ + hb_uint32 iCluster = 0; + hb_uint32 length = item->item.length; + while (iCluster < length) { + int cluster_start = item->log_clusters[iCluster]; + ++iCluster; + while (iCluster < length && item->log_clusters[iCluster] == cluster_start) { + ++iCluster; + } + int cluster_end = (iCluster < length) ? item->log_clusters[iCluster] : item->num_glyphs; + item->attributes[cluster_start].clusterStart = true; + for (int i = cluster_start + 1; i < cluster_end; i++) { + item->attributes[i].clusterStart = false; + } + } +} + +/* + * THAI Shaping. + */ +HB_Bool HB_ThaiShape (HB_ShaperItem *shaper_item) +{ + if ( !HB_ThaiConvertStringToGlyphIndices (shaper_item) ) + return false; + + HB_ThaiHeuristicSetGlyphAttributes (shaper_item); + +#ifndef NO_OPENTYPE + const int availableGlyphs = shaper_item->num_glyphs; + if ( HB_SelectScript (shaper_item, thai_features) ) { + HB_OpenTypeShape (shaper_item, /*properties*/0); + return HB_OpenTypePosition (shaper_item, availableGlyphs, /*doLogClusters*/false); } +#endif + + HB_HeuristicPosition (shaper_item); + return true; +} + +/* + * Thai Attributes: computes Word Break, Word Boundary and Char stop for THAI. + */ +static void HB_ThaiAssignAttributes(const HB_UChar16 *string, hb_uint32 len, HB_CharAttributes *attributes) +{ + char s[128]; + char *cstr = s; + int *break_positions = 0; + int brp[128]; + int brp_size = 0; + hb_uint32 numbreaks, i, j, cell_length; + struct thcell_t tis_cell; + + if (!init_libthai()) + return ; + + if (len >= 128) + cstr = (char *)malloc(len*sizeof(char) + 1); + + to_tis620(string, len, cstr); for (i = 0; i < len; ++i) { attributes[i].lineBreakType = HB_NoBreak; attributes[i].wordBoundary = FALSE; } - for (i = 0; i < numbreaks; ++i) { - if (break_positions[i] > 0) { - attributes[break_positions[i]-1].lineBreakType = HB_Break; - attributes[break_positions[i]-1].wordBoundary = TRUE; + if (len > 128) { + break_positions = (int*) malloc (sizeof(int) * len); + memset (break_positions, 0, sizeof(int) * len); + brp_size = len; + } + else { + break_positions = brp; + brp_size = 128; + } + + if (break_positions) { + attributes[0].wordBoundary = TRUE; + numbreaks = th_brk((const unsigned char *)cstr, break_positions, brp_size); + for (i = 0; i < numbreaks; ++i) { + attributes[break_positions[i]].wordBoundary = TRUE; + if (break_positions[i] > 0) + attributes[break_positions[i]-1].lineBreakType = HB_Break; } + + if (break_positions != brp) + free(break_positions); } - if (break_positions != brp) - free(break_positions); + /* manage charStop */ + i = 0; + while (i < len) { + cell_length = th_next_cell((const unsigned char *)cstr + i, len - i, &tis_cell, true); + + attributes[i].charStop = true; + for (j = 1; j < cell_length; j++) + attributes[i + j].charStop = false; + + /* Set charStop for SARA AM */ + if (cstr[i + cell_length - 1] == (char)0xd3) + attributes[i + cell_length - 1].charStop = true; + + i += cell_length; + } if (len >= 128) free(cstr); @@ -105,7 +414,9 @@ static void thaiWordBreaks(const HB_UChar16 *string, hb_uint32 len, HB_CharAttri void HB_ThaiAttributes(HB_Script script, const HB_UChar16 *text, hb_uint32 from, hb_uint32 len, HB_CharAttributes *attributes) { assert(script == HB_Script_Thai); + const HB_UChar16 *uc = text + from; attributes += from; - thaiWordBreaks(text + from, len, attributes); + HB_UNUSED(script); + HB_ThaiAssignAttributes(uc, len, attributes); } |