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-rw-r--r--modules/thai/thai-fc.c251
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diff --git a/modules/thai/thai-fc.c b/modules/thai/thai-fc.c
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-/* Pango
- * thai-xft.c:
- *
- * Copyright (C) 1999 Red Hat Software
- * Author: Owen Taylor <otaylor@redhat.com>
- *
- * Copyright (C) 2002 NECTEC
- * Author: Theppitak Karoonboonyanan <thep@links.nectec.or.th>
- *
- * Copyright (c) 1996-2000 by Sun Microsystems, Inc.
- * Author: Chookij Vanatham <Chookij.Vanatham@Eng.Sun.COM>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-
-#include <string.h>
-
-#include <glib.h>
-#include "pango-engine.h"
-#include "pangoxft.h"
-#include "thai-shaper.h"
-
-#define SCRIPT_ENGINE_NAME "ThaiScriptEngineXft"
-
-/* We handle the range U+0e01 to U+0e5b exactly
- */
-static PangoEngineRange thai_ranges[] = {
- { 0x0e01, 0x0e5b, "*" }, /* Thai */
-};
-
-static PangoEngineInfo script_engines[] = {
- {
- SCRIPT_ENGINE_NAME,
- PANGO_ENGINE_TYPE_SHAPE,
- PANGO_RENDER_TYPE_XFT,
- thai_ranges, G_N_ELEMENTS(thai_ranges)
- }
-};
-
-/* 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] = {
- 0x00ab, 0x00bb, 0x2026, 0xf88c, 0xf88f, 0xf892, 0xf895, 0xf898,
- 0xf88b, 0xf88e, 0xf891, 0xf894, 0xf897, 0x201c, 0x201d, 0xf899,
- /**/ 0, 0x2022, 0xf884, 0xf889, 0xf885, 0xf886, 0xf887, 0xf888,
- 0xf88a, 0xf88d, 0xf890, 0xf893, 0xf896, 0x2018, 0x2019, 0,
- 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, 0xfeff, 0x200b, 0x2013, 0x2014, 0x0e3f,
- 0x0e40, 0x0e41, 0x0e42, 0x0e43, 0x0e44, 0x0e45, 0x0e46, 0x0e47,
- 0x0e48, 0x0e49, 0x0e4a, 0x0e4b, 0x0e4c, 0x0e4d, 0x2122, 0x0e4f,
- 0x0e50, 0x0e51, 0x0e52, 0x0e53, 0x0e54, 0x0e55, 0x0e56, 0x0e57,
- 0x0e58, 0x0e59, 0x00ae, 0x00a9, 0, 0, 0, 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
-};
-
-static int
-contain_glyphs(PangoFont *font, const int glyph_map[128])
-{
- unsigned char c;
-
- for (c = 0; c < 0x80; c++)
- {
- if (glyph_map[c])
- {
- if (!pango_xft_font_has_char (font, glyph_map[c]))
- return 0;
- }
- }
- return 1;
-}
-
-/* Returns a structure with information we will use to rendering given the
- * #PangoFont. This is computed once per font and cached for later retrieval.
- */
-ThaiFontInfo *
-thai_get_font_info (PangoFont *font)
-{
- ThaiFontInfo *font_info;
- GQuark info_id = g_quark_from_string ("thai-font-info");
-
- font_info = g_object_get_qdata (G_OBJECT (font), info_id);
-
- if (!font_info)
- {
- /* No cached information not found, so we need to compute it
- * from scratch
- */
- font_info = g_new (ThaiFontInfo, 1);
- font_info->font = font;
-
- /* detect font set by determining availibility of glyphs */
- if (contain_glyphs(font, tis620_2))
- font_info->font_set = THAI_FONT_TIS_WIN;
- else if (contain_glyphs(font, tis620_1))
- font_info->font_set = THAI_FONT_TIS_MAC;
- else if (contain_glyphs(font, tis620_0))
- font_info->font_set = THAI_FONT_TIS;
- else
- font_info->font_set = THAI_FONT_ISO10646;
-
- g_object_set_qdata_full (G_OBJECT (font), info_id, font_info, (GDestroyNotify)g_free);
- }
-
- return font_info;
-}
-
-PangoGlyph
-thai_make_glyph (ThaiFontInfo *font_info, unsigned int c)
-{
- int index;
- PangoGlyph result;
-
- switch (font_info->font_set) {
- case THAI_FONT_ISO10646:index = c; break;
- case THAI_FONT_TIS: index = (c & 0x80) ? tis620_0[c & 0x7f] : c; break;
- case THAI_FONT_TIS_MAC: index = (c & 0x80) ? tis620_1[c & 0x7f] : c; break;
- case THAI_FONT_TIS_WIN: index = (c & 0x80) ? tis620_2[c & 0x7f] : c; break;
- default: index = 0; break;
- }
-
- result = pango_xft_font_get_glyph (font_info->font, index);
- if (result)
- return result;
- else
- return pango_xft_font_get_unknown_glyph (font_info->font, index);
-}
-
-PangoGlyph
-thai_make_unknown_glyph (ThaiFontInfo *font_info, unsigned int c)
-{
- return pango_xft_font_get_unknown_glyph (font_info->font, c);
-}
-
-static PangoCoverage *
-thai_engine_get_coverage (PangoFont *font,
- PangoLanguage *lang)
-{
- return pango_font_get_coverage (font, lang);
-}
-
-static PangoEngine *
-thai_engine_xft_new ()
-{
- PangoEngineShape *result;
-
- result = g_new (PangoEngineShape, 1);
-
- result->engine.id = SCRIPT_ENGINE_NAME;
- result->engine.type = PANGO_ENGINE_TYPE_SHAPE;
- result->engine.length = sizeof (result);
- result->script_shape = thai_engine_shape;
- result->get_coverage = thai_engine_get_coverage;
-
- return (PangoEngine *)result;
-}
-
-/* The following three functions provide the public module API for
- * Pango. If we are compiling it is a module, then we name the
- * entry points script_engine_list, etc. But if we are compiling
- * it for inclusion directly in Pango, then we need them to
- * to have distinct names for this module, so we prepend
- * _pango_thai_xft_
- */
-#ifdef XFT_MODULE_PREFIX
-#define MODULE_ENTRY(func) _pango_thai_xft_##func
-#else
-#define MODULE_ENTRY(func) func
-#endif
-
-/* List the engines contained within this module
- */
-void
-MODULE_ENTRY(script_engine_list) (PangoEngineInfo **engines, gint *n_engines)
-{
- *engines = script_engines;
- *n_engines = G_N_ELEMENTS (script_engines);
-}
-
-/* Load a particular engine given the ID for the engine
- */
-PangoEngine *
-MODULE_ENTRY(script_engine_load) (const char *id)
-{
- if (!strcmp (id, SCRIPT_ENGINE_NAME))
- return thai_engine_xft_new ();
- else
- return NULL;
-}
-
-void
-MODULE_ENTRY(script_engine_unload) (PangoEngine *engine)
-{
-}
-