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-rw-r--r--modules/arabic/arabic-xft.c352
1 files changed, 0 insertions, 352 deletions
diff --git a/modules/arabic/arabic-xft.c b/modules/arabic/arabic-xft.c
deleted file mode 100644
index f4a63c0a..00000000
--- a/modules/arabic/arabic-xft.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/* Pango
- * arabic-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 "arabic-ot.h"
-
-#include "pangoxft.h"
-#include "pango-engine.h"
-#include "pango-utils.h"
-
-#define SCRIPT_ENGINE_NAME "ArabicScriptEngineXft"
-
-static PangoEngineRange arabic_ranges[] = {
- /* Language characters */
- { 0x060c, 0x06f9, "*" }, /* Arabic */
-};
-
-static PangoEngineInfo script_engines[] = {
- {
- SCRIPT_ENGINE_NAME,
- PANGO_ENGINE_TYPE_SHAPE,
- PANGO_RENDER_TYPE_XFT,
- arabic_ranges, G_N_ELEMENTS(arabic_ranges)
- }
-};
-
-static void
-maybe_add_feature (PangoOTRuleset *ruleset,
- PangoOTInfo *info,
- guint script_index,
- PangoOTTag tag,
- gulong property_bit)
-{
- guint feature_index;
-
- /* 0xffff == default language system */
- if (pango_ot_info_find_feature (info, PANGO_OT_TABLE_GSUB,
- tag, script_index, 0xffff, &feature_index))
- pango_ot_ruleset_add_feature (ruleset, PANGO_OT_TABLE_GSUB, feature_index,
- property_bit);
-}
-
-static PangoOTRuleset *
-get_ruleset (FT_Face face)
-{
- PangoOTRuleset *ruleset;
- static GQuark ruleset_quark = 0;
-
- PangoOTInfo *info = pango_ot_info_get (face);
-
- if (!ruleset_quark)
- ruleset_quark = g_quark_from_string ("pango-arabic-ruleset");
-
- if (!info)
- return NULL;
-
- ruleset = g_object_get_qdata (G_OBJECT (info), ruleset_quark);
-
- if (!ruleset)
- {
- PangoOTTag arab_tag = FT_MAKE_TAG ('a', 'r', 'a', 'b');
- guint script_index;
-
- ruleset = pango_ot_ruleset_new (info);
-
- if (pango_ot_info_find_script (info, PANGO_OT_TABLE_GSUB,
- arab_tag, &script_index))
- {
- maybe_add_feature (ruleset, info, script_index, FT_MAKE_TAG ('i','s','o','l'), isolated);
- maybe_add_feature (ruleset, info, script_index, FT_MAKE_TAG ('i','n','i','t'), initial);
- maybe_add_feature (ruleset, info, script_index, FT_MAKE_TAG ('m','e','d','i'), medial);
- maybe_add_feature (ruleset, info, script_index, FT_MAKE_TAG ('f','i','n','a'), final);
- maybe_add_feature (ruleset, info, script_index, FT_MAKE_TAG ('l','i','g','a'), 0xFFFF);
- }
-
- g_object_set_qdata_full (G_OBJECT (info), ruleset_quark, ruleset,
- (GDestroyNotify)g_object_unref);
- }
-
- return ruleset;
-}
-
-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
-set_glyph (PangoFont *font, PangoGlyphString *glyphs, int i, int offset, PangoGlyph glyph)
-{
- glyphs->glyphs[i].glyph = glyph;
- glyphs->log_clusters[i] = offset;
-}
-
-static void
-arabic_engine_shape (PangoFont *font,
- const char *text,
- gint length,
- PangoAnalysis *analysis,
- PangoGlyphString *glyphs)
-{
- int n_chars;
- int i;
- const char *p;
- gulong *properties = NULL;
- gunichar *wcs = NULL;
- FT_Face face;
- PangoOTRuleset *ruleset;
-
- g_return_if_fail (font != NULL);
- g_return_if_fail (text != NULL);
- g_return_if_fail (length >= 0);
- g_return_if_fail (analysis != NULL);
-
- face = pango_xft_font_lock_face (font);
- g_assert (face);
-
- n_chars = g_utf8_strlen (text, length);
- pango_glyph_string_set_size (glyphs, n_chars);
-
- ruleset = get_ruleset (face);
- if (ruleset)
- {
- wcs = g_utf8_to_ucs4_fast (text, length, NULL);
- properties = g_new0 (gulong, n_chars);
-
- Arabic_Assign_Properties (wcs, properties, n_chars);
- }
-
- p = text;
- for (i=0; i < n_chars; i++)
- {
- gunichar wc;
- gunichar mirrored_ch;
- PangoGlyph index;
- char buf[6];
- const char *input;
-
- wc = g_utf8_get_char (p);
-
- input = p;
- if (analysis->level % 2)
- if (pango_get_mirror_char (wc, &mirrored_ch))
- {
- wc = mirrored_ch;
-
- g_unichar_to_utf8 (wc, buf);
- input = buf;
- }
-
- if (wc >= 0x200B && wc <= 0x200F) /* Zero-width characters */
- {
- set_glyph (font, glyphs, i, p - text, 0);
- }
- else
- {
- /* Hack - Microsoft fonts are strange and don't contain the
- * correct rules to shape ARABIC LETTER FARSI YEH in
- * medial/initial position. It looks identical to ARABIC LETTER
- * YEH in these positions, so we substitute
- */
- if (wc == 0x6cc && ruleset &&
- ((properties[i] & (initial | medial)) != (initial | medial)))
- wc = 0x64a;
-
- index = pango_xft_font_get_glyph (font, wc);
-
- if (!index)
- {
- set_glyph (font, glyphs, i, p - text,
- pango_xft_font_get_unknown_glyph (font, wc));
- }
- else
- {
- set_glyph (font, glyphs, i, p - text, index);
-
- if (g_unichar_type (wc) == G_UNICODE_NON_SPACING_MARK)
- {
- if (i > 0)
- {
- glyphs->log_clusters[i] = glyphs->log_clusters[i-1];
-#if 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;
-
- /* 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;
-#endif
- }
- }
- }
- }
-
- p = g_utf8_next_char (p);
- }
-
- ruleset = get_ruleset (face);
-
- if (ruleset)
- {
- pango_ot_ruleset_shape (ruleset, glyphs, properties);
-
- g_free (wcs);
- g_free (properties);
-
- }
-
- for (i = 0; i < glyphs->num_glyphs; i++)
- {
-
- if (glyphs->glyphs[i].glyph)
- {
- PangoRectangle logical_rect;
-
- pango_font_get_glyph_extents (font, glyphs->glyphs[i].glyph, NULL, &logical_rect);
- glyphs->glyphs[i].geometry.width = logical_rect.width;
- }
- else
- glyphs->glyphs[i].geometry.width = 0;
-
- glyphs->glyphs[i].geometry.x_offset = 0;
- glyphs->glyphs[i].geometry.y_offset = 0;
- }
-
- /* Simple bidi support */
-
- if (analysis->level % 2)
- {
- int start, end;
-
- /* Swap all glyphs */
- swap_range (glyphs, 0, glyphs->num_glyphs);
-
- /* Now reorder glyphs within each cluster back to LTR */
- for (start=0; start<glyphs->num_glyphs;)
- {
- end = start;
- while (end < glyphs->num_glyphs &&
- glyphs->log_clusters[end] == glyphs->log_clusters[start])
- end++;
-
- if (end > start + 1)
- swap_range (glyphs, start, end);
- start = end;
- }
- }
-
- pango_xft_font_unlock_face (font);
-}
-
-static PangoCoverage *
-arabic_engine_get_coverage (PangoFont *font,
- PangoLanguage *lang)
-{
- return pango_font_get_coverage (font, lang);
-}
-
-static PangoEngine *
-arabic_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 = arabic_engine_shape;
- result->get_coverage = arabic_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_arabic_
- */
-#ifdef XFT_MODULE_PREFIX
-#define MODULE_ENTRY(func) _pango_arabic_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 arabic_engine_xft_new ();
- else
- return NULL;
-}
-
-void
-MODULE_ENTRY(script_engine_unload) (PangoEngine *engine)
-{
-}
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