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Diffstat (limited to 'modules/basic/basic-ft2.c')
| -rw-r--r-- | modules/basic/basic-ft2.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/modules/basic/basic-ft2.c b/modules/basic/basic-ft2.c deleted file mode 100644 index e1f65a42..00000000 --- a/modules/basic/basic-ft2.c +++ /dev/null @@ -1,335 +0,0 @@ -/* Pango - * basic-ft2.c: - * - * Copyright (C) 1999 Red Hat Software - * - * 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 <glib.h> -#include <string.h> - -#include "pango-layout.h" -#include "pango-engine.h" -#include "pangoft2.h" -#include "pango-utils.h" - -#include "basic-common.h" - -#define SCRIPT_ENGINE_NAME "BasicScriptEngineFT2" - - -static PangoEngineRange basic_ranges[] = { - /* Basic Latin, Latin-1 Supplement, Latin Extended-A, Latin Extended-B, - * IPA Extensions - */ - { 0x0000, 0x02af, "*" }, - - /* Spacing Modifier Letters */ - { 0x02b0, 0x02ff, "" }, - - /* Not covered: Combining Diacritical Marks */ - - /* Greek, Cyrillic, Armenian */ - { 0x0380, 0x058f, "*" }, - - /* Hebrew */ - { 0x0591, 0x05f4, "" }, - - /* Arabic */ - { 0x060c, 0x06f9, "" }, - - /* Not covered: Syriac, Thaana, Devanagari, Bengali, Gurmukhi, Gujarati, - * Oriya, Tamil, Telugu, Kannada, Malayalam, Sinhala - */ - - /* Thai */ - { 0x0e01, 0x0e5b, "" }, - - /* Not covered: Lao, Tibetan, Myanmar, Georgian, Hangul Jamo, Ethiopic, - * Cherokee, Unified Canadian Aboriginal Syllabics, Ogham, Runic, - * Khmer, Mongolian - */ - - /* Latin Extended Additional, Greek Extended */ - { 0x1e00, 0x1fff, "*" }, - - /* General Punctuation, Superscripts and Subscripts, Currency Symbols, - * Combining Marks for Symbols, Letterlike Symbols, Number Forms, - * Arrows, Mathematical Operators, Miscellaneous Technical, - * Control Pictures, Optical Character Recognition, Enclosed Alphanumerics, - * Box Drawing, Block Elements, Geometric Shapes, Miscellaneous Symbols, - * Dingbats, Braille Patterns, CJK Radicals Supplement, Kangxi Radicals, - * Ideographic Description Characters, CJK Symbols and Punctuation, - * Hiragana, Katakana, Bopomofo, Hangul Compatibility Jamo, Kanbun, - * Bopomofo Extended, Enclosed CJK Letters and Months, CJK Compatibility, - * CJK Unified Ideographs Extension A, CJK Unified Ideographs - */ - { 0x2000, 0x9fff, "*" }, - - /* Not covered: Yi Syllables, Yi Radicals */ - - /* Hangul Syllables */ - { 0xac00, 0xd7a3, "kr" }, - - /* Not covered: Private Use */ - - /* CJK Compatibility Ideographs (partly) */ - { 0xf900, 0xfa0b, "kr" }, - - /* Not covered: CJK Compatibility Ideographs (partly), - * Alphabetic Presentation Forms, Arabic Presentation Forms-A, - * Combining Half Marks, CJK Compatibility Forms, - * Small Form Variants, Arabic Presentation Forms-B, - * Specials - */ - - /* Halfwidth and Fullwidth Forms (partly) */ - { 0xff00, 0xffe3, "*" } - - /* Not covered: Halfwidth and Fullwidth Forms, Specials */ -}; - -static PangoEngineInfo script_engines[] = { - { - SCRIPT_ENGINE_NAME, - PANGO_ENGINE_TYPE_SHAPE, - PANGO_RENDER_TYPE_FT2, - basic_ranges, G_N_ELEMENTS(basic_ranges) - } -}; - -static gint n_script_engines = G_N_ELEMENTS (script_engines); - -/* - * FT2 system script engine portion - */ - -static PangoGlyph -find_char (PangoFont *font, - gunichar wc) -{ - FT_Face face; - FT_UInt index; - - face = pango_ft2_font_get_face (font); - index = FT_Get_Char_Index (face, wc); - if (index && index <= face->num_glyphs) - return index; - - return 0; -} - -static void -set_glyph (PangoFont *font, - PangoGlyphString *glyphs, - int i, - int offset, - PangoGlyph glyph) -{ - PangoRectangle logical_rect; - - glyphs->glyphs[i].glyph = glyph; - - glyphs->glyphs[i].geometry.x_offset = 0; - glyphs->glyphs[i].geometry.y_offset = 0; - - glyphs->log_clusters[i] = offset; - - pango_font_get_glyph_extents (font, glyphs->glyphs[i].glyph, NULL, &logical_rect); - glyphs->glyphs[i].geometry.width = logical_rect.width; - - if (i > 0) - { - glyphs->glyphs[i-1].geometry.width += - pango_ft2_font_get_kerning (font, - glyphs->glyphs[i-1].glyph, - glyphs->glyphs[i].glyph); - } -} - -static void -swap_range (PangoGlyphString *glyphs, - int start, - int end) -{ - int i, j; - - for (i = start, j = end - 1; i < j; i++, j--) - { - PangoGlyphInfo glyph_info; - gint log_cluster; - - glyph_info = glyphs->glyphs[i]; - glyphs->glyphs[i] = glyphs->glyphs[j]; - glyphs->glyphs[j] = glyph_info; - - log_cluster = glyphs->log_clusters[i]; - glyphs->log_clusters[i] = glyphs->log_clusters[j]; - glyphs->log_clusters[j] = log_cluster; - } -} - -static void -basic_engine_shape (PangoFont *font, - const char *text, - gint length, - PangoAnalysis *analysis, - PangoGlyphString *glyphs) -{ - int n_chars; - int i; - const char *p; - - g_return_if_fail (font != NULL); - g_return_if_fail (text != NULL); - g_return_if_fail (length >= 0); - g_return_if_fail (analysis != NULL); - - n_chars = g_utf8_strlen (text, length); - pango_glyph_string_set_size (glyphs, n_chars); - - p = text; - for (i = 0; i < n_chars; i++) - { - gunichar wc; - gunichar mirrored_ch; - PangoGlyph index; - - wc = g_utf8_get_char (p); - - if (analysis->level % 2) - if (pango_get_mirror_char (wc, &mirrored_ch)) - wc = mirrored_ch; - - if (wc == 0xa0) /* non-break-space */ - wc = 0x20; - - if (ZERO_WIDTH_CHAR (wc)) - { - set_glyph (font, glyphs, i, p - text, 0); - } - else - { - index = find_char (font, wc); - if (index) - { - set_glyph (font, glyphs, i, p - text, index); - - if (g_unichar_type (wc) == G_UNICODE_NON_SPACING_MARK) - { - if (i > 0) - { - PangoRectangle logical_rect, ink_rect; - - glyphs->glyphs[i].geometry.width = MAX (glyphs->glyphs[i-1].geometry.width, - glyphs->glyphs[i].geometry.width); - glyphs->glyphs[i-1].geometry.width = 0; - glyphs->log_clusters[i] = glyphs->log_clusters[i-1]; - - /* Some heuristics to try to guess how overstrike glyphs are - * done and compensate - */ - pango_font_get_glyph_extents (font, glyphs->glyphs[i].glyph, &ink_rect, &logical_rect); - if (logical_rect.width == 0 && ink_rect.x == 0) - glyphs->glyphs[i].geometry.x_offset = (glyphs->glyphs[i].geometry.width - ink_rect.width) / 2; - } - } - } - else - set_glyph (font, glyphs, i, p - text, pango_ft2_get_unknown_glyph (font)); - } - - p = g_utf8_next_char (p); - } - - /* Simple bidi support... may have separate modules later */ - - if (analysis->level % 2) - { - int start, end; - - /* Swap all glyphs */ - swap_range (glyphs, 0, n_chars); - - /* Now reorder glyphs within each cluster back to LTR */ - for (start = 0; start < n_chars;) - { - end = start; - while (end < n_chars && - glyphs->log_clusters[end] == glyphs->log_clusters[start]) - end++; - - swap_range (glyphs, start, end); - start = end; - } - } -} - -static PangoCoverage * -basic_engine_get_coverage (PangoFont *font, - PangoLanguage *lang) -{ - return pango_font_get_coverage (font, lang); -} - -static PangoEngine * -basic_engine_ft2_new (void) -{ - 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 = basic_engine_shape; - result->get_coverage = basic_engine_get_coverage; - - return (PangoEngine *)result; -} - -/* The following three functions provide the public module API for - * Pango - */ -#ifdef FT2_MODULE_PREFIX -#define MODULE_ENTRY(func) _pango_basic_ft2_##func -#else -#define MODULE_ENTRY(func) func -#endif - -void -MODULE_ENTRY(script_engine_list) (PangoEngineInfo **engines, - gint *n_engines) -{ - *engines = script_engines; - *n_engines = n_script_engines; -} - -PangoEngine * -MODULE_ENTRY(script_engine_load) (const char *id) -{ - if (!strcmp (id, SCRIPT_ENGINE_NAME)) - return basic_engine_ft2_new (); - else - return NULL; -} - -void -MODULE_ENTRY(script_engine_unload) (PangoEngine *engine) -{ -} - |