diff options
Diffstat (limited to 'modules/hebrew/hebrew-fc.c')
| -rw-r--r-- | modules/hebrew/hebrew-fc.c | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/modules/hebrew/hebrew-fc.c b/modules/hebrew/hebrew-fc.c deleted file mode 100644 index 365d34fb..00000000 --- a/modules/hebrew/hebrew-fc.c +++ /dev/null @@ -1,262 +0,0 @@ -/* Pango - * hebrew-xft.h: - * - * Copyright (C) 2000 Red Hat Software - * Author: Owen Taylor <otaylor@redhat.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 "pangoxft.h" -#include "pango-engine.h" -#include "pango-utils.h" -#include "hebrew-shaper.h" - -#define MAX_CLUSTER_CHRS 20 - -static PangoEngineRange hebrew_ranges[] = { - /* Language characters */ - { 0x0591, 0x05f4, "*" }, /* Hebrew */ -}; - -static PangoEngineInfo script_engines[] = { - { - "HebrewScriptEngineXft", - PANGO_ENGINE_TYPE_SHAPE, - PANGO_RENDER_TYPE_XFT, - hebrew_ranges, G_N_ELEMENTS(hebrew_ranges) - } -}; - -static guint -get_glyph_num (FT_Face face, PangoFont *font, gunichar wc) -{ - int index = FT_Get_Char_Index (face, wc); - - if (index && index <= face->num_glyphs) - return index; - else - return 0; -} - -static void -get_cluster_glyphs(FT_Face face, - PangoFont *font, - gunichar cluster[], - gint cluster_size, - /* output */ - gint glyph_num[], - PangoGlyph glyph[], - gint widths[], - PangoRectangle ink_rects[]) -{ - int i; - for (i=0; i<cluster_size; i++) - { - PangoRectangle logical_rect; - glyph_num[i] = get_glyph_num(face, font, cluster[i]); - glyph[i] = glyph_num[i]; - - pango_font_get_glyph_extents (font, - glyph[i], &ink_rects[i], &logical_rect); - - /* Assign the base char width to the last character in the cluster */ - if (i==0) - { - widths[i] = 0; - widths[cluster_size-1] = logical_rect.width; - } - else if (i < cluster_size-1) - widths[i] = 0; - } -} - -static void -add_glyph (PangoGlyphString *glyphs, - gint cluster_start, - PangoGlyph glyph, - gboolean is_combining, - gint width, - gint x_offset, - gint y_offset - ) -{ - gint index = glyphs->num_glyphs; - - pango_glyph_string_set_size (glyphs, index + 1); - - glyphs->glyphs[index].glyph = glyph; - glyphs->glyphs[index].attr.is_cluster_start = is_combining ? 0 : 1; - - glyphs->log_clusters[index] = cluster_start; - - glyphs->glyphs[index].geometry.x_offset = x_offset; - glyphs->glyphs[index].geometry.y_offset = y_offset; - glyphs->glyphs[index].geometry.width = width; -} - -static void -add_cluster(PangoFont *font, - PangoGlyphString *glyphs, - int cluster_size, - int cluster_start, - int glyph_num[], - PangoGlyph glyph[], - int width[], - int x_offset[], - int y_offset[]) -{ - int i; - - for (i=0; i<cluster_size; i++) - { - add_glyph (glyphs, cluster_start, glyph[i], - i == 0 ? FALSE : TRUE, width[i], x_offset[i], y_offset[i]); - } -} - - -static void -hebrew_engine_shape (PangoFont *font, - const char *text, - gint length, - PangoAnalysis *analysis, - PangoGlyphString *glyphs) -{ - const char *p; - const char *log_cluster; - gunichar cluster[MAX_CLUSTER_CHRS]; - gint cluster_size; - gint glyph_num[MAX_CLUSTER_CHRS]; - gint glyph_width[MAX_CLUSTER_CHRS], x_offset[MAX_CLUSTER_CHRS], y_offset[MAX_CLUSTER_CHRS]; - PangoRectangle ink_rects[MAX_CLUSTER_CHRS]; - PangoGlyph glyph[MAX_CLUSTER_CHRS]; - FT_Face face; - - g_return_if_fail (font != NULL); - g_return_if_fail (text != NULL); - g_return_if_fail (length >= 0); - g_return_if_fail (analysis != NULL); - - pango_glyph_string_set_size (glyphs, 0); - face = pango_xft_font_get_face (font); - g_assert (face); - - p = text; - while (p < text + length) - { - log_cluster = p; - p = hebrew_shaper_get_next_cluster (p, text + length - p, - /* output */ - cluster, &cluster_size); - get_cluster_glyphs(face, - font, - cluster, - cluster_size, - /* output */ - glyph_num, - glyph, - glyph_width, - ink_rects); - - /* Kern the glyphs! */ - hebrew_shaper_get_cluster_kerning(cluster, - cluster_size, - /* Input and output */ - ink_rects, - glyph_width, - /* output */ - x_offset, - y_offset); - - add_cluster(font, - glyphs, - cluster_size, - log_cluster - text, - glyph_num, - glyph, - glyph_width, - x_offset, - y_offset); - - } - - if (analysis->level % 2) - hebrew_shaper_bidi_reorder(glyphs); -} - -static PangoCoverage * -hebrew_engine_get_coverage (PangoFont *font, - PangoLanguage *lang) -{ - return pango_font_get_coverage (font, lang); -} - -static PangoEngine * -hebrew_engine_xft_new () -{ - PangoEngineShape *result; - - result = g_new (PangoEngineShape, 1); - - result->engine.id = PANGO_RENDER_TYPE_XFT; - result->engine.type = PANGO_ENGINE_TYPE_SHAPE; - result->engine.length = sizeof (result); - result->script_shape = hebrew_engine_shape; - result->get_coverage = hebrew_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_hebrew_xft_ - */ -#ifdef XFT_MODULE_PREFIX -#define MODULE_ENTRY(func) _pango_hebrew_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, "HebrewScriptEngineXft")) - return hebrew_engine_xft_new (); - else - return NULL; -} - -void -MODULE_ENTRY(script_engine_unload) (PangoEngine *engine) -{ -} |