/*
- * Copyright © 2010 Google, Inc.
+ * Copyright © 2010,2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
#include "hb-private.hh"
-#include "hb-ot-shape-private.hh"
+#include "hb-ot-map-private.hh"
+#include "hb-ot-shape-normalize-private.hh"
-HB_BEGIN_DECLS
+/* buffer var allocations, used during the entire shaping process */
+#define unicode_props0() var1.u8[0]
+#define unicode_props1() var1.u8[1]
+
+/* buffer var allocations, used during the GSUB/GPOS processing */
+#define props_cache() var1.u16[1] /* GSUB/GPOS glyph_props cache */
+#define syllable() var2.u8[0] /* GSUB/GPOS shaping boundaries */
+#define lig_props() var2.u8[1] /* GSUB/GPOS ligature tracking */
+
+/* buffer var allocations, used by complex shapers */
+#define complex_var_persistent_u8_0() var2.u8[2]
+#define complex_var_persistent_u8_1() var2.u8[3]
+#define complex_var_temporary_u8() var2.u8[0]
+
+
+#define HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS \
+ HB_COMPLEX_SHAPER_IMPLEMENT (default) /* should be first */ \
+ HB_COMPLEX_SHAPER_IMPLEMENT (arabic) \
+ HB_COMPLEX_SHAPER_IMPLEMENT (hangul) \
+ HB_COMPLEX_SHAPER_IMPLEMENT (indic) \
+ HB_COMPLEX_SHAPER_IMPLEMENT (thai) \
+ /* ^--- Add new shapers here */
+
+enum hb_ot_complex_shaper_t {
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) hb_ot_complex_shaper_##name,
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+ /* Just here to avoid enum trailing comma: */
+ hb_ot_complex_shaper_generic = hb_ot_complex_shaper_default
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
+};
+
static inline hb_ot_complex_shaper_t
hb_ot_shape_complex_categorize (const hb_segment_properties_t *props)
{
- switch ((int) props->script)
+ switch ((hb_tag_t) props->script)
{
+ default:
+ return hb_ot_complex_shaper_default;
+
+
+ /* Unicode-1.1 additions */
case HB_SCRIPT_ARABIC:
- case HB_SCRIPT_MANDAIC:
case HB_SCRIPT_MONGOLIAN:
- case HB_SCRIPT_NKO:
case HB_SCRIPT_SYRIAC:
+
+ /* Unicode-5.0 additions */
+ case HB_SCRIPT_NKO:
+
+ /* Unicode-6.0 additions */
+ case HB_SCRIPT_MANDAIC:
+
return hb_ot_complex_shaper_arabic;
- /* TODO: These are all the scripts that the ucd/IndicSyllabicCategory.txt covers.
- * Quite possibly many of these need no shaping, and some other are encoded visually.
- * Needs to be refined.
+
+ /* Unicode-1.1 additions */
+ case HB_SCRIPT_HANGUL:
+
+ return hb_ot_complex_shaper_hangul;
+
+
+ /* Unicode-1.1 additions */
+ case HB_SCRIPT_THAI:
+ case HB_SCRIPT_LAO:
+
+ return hb_ot_complex_shaper_thai;
+
+
+
+ /* ^--- Add new shapers here */
+
+
+#if 0
+ /* Note:
+ *
+ * These disabled scripts are listed in ucd/IndicSyllabicCategory.txt, but according
+ * to Martin Hosken and Jonathan Kew do not require complex shaping.
+ *
+ * TODO We should automate figuring out which scripts do not need complex shaping
+ *
+ * TODO We currently keep data for these scripts in our indic table. Need to fix the
+ * generator to not do that.
*/
- case HB_SCRIPT_BALINESE:
+
+
+ /* Simple? */
+
+ /* Unicode-3.2 additions */
+ case HB_SCRIPT_BUHID:
+ case HB_SCRIPT_HANUNOO:
+
+ /* Unicode-5.1 additions */
+ case HB_SCRIPT_SAURASHTRA:
+
+ /* Unicode-5.2 additions */
+ case HB_SCRIPT_MEETEI_MAYEK:
+
+ /* Unicode-6.0 additions */
case HB_SCRIPT_BATAK:
- case HB_SCRIPT_BENGALI:
case HB_SCRIPT_BRAHMI:
- case HB_SCRIPT_BUGINESE:
- case HB_SCRIPT_BUHID:
- case HB_SCRIPT_CHAM:
+
+
+ /* Simple */
+
+ /* Unicode-1.1 additions */
+ /* These have their own shaper now. */
+ case HB_SCRIPT_LAO:
+ case HB_SCRIPT_THAI:
+
+ /* Unicode-2.0 additions */
+ case HB_SCRIPT_TIBETAN:
+
+ /* Unicode-3.2 additions */
+ case HB_SCRIPT_TAGALOG:
+ case HB_SCRIPT_TAGBANWA:
+
+ /* Unicode-4.0 additions */
+ case HB_SCRIPT_LIMBU:
+ case HB_SCRIPT_TAI_LE:
+
+ /* Unicode-4.1 additions */
+ case HB_SCRIPT_SYLOTI_NAGRI:
+
+ /* Unicode-5.0 additions */
+ case HB_SCRIPT_PHAGS_PA:
+
+ /* Unicode-5.1 additions */
+ case HB_SCRIPT_KAYAH_LI:
+
+ /* Unicode-5.2 additions */
+ case HB_SCRIPT_TAI_VIET:
+
+
+ /* May need Indic treatment in the future? */
+
+ /* Unicode-3.0 additions */
+ case HB_SCRIPT_MYANMAR:
+
+
+#endif
+
+ /* Unicode-1.1 additions */
+ case HB_SCRIPT_BENGALI:
case HB_SCRIPT_DEVANAGARI:
case HB_SCRIPT_GUJARATI:
case HB_SCRIPT_GURMUKHI:
- case HB_SCRIPT_HANUNOO:
- case HB_SCRIPT_JAVANESE:
- case HB_SCRIPT_KAITHI:
case HB_SCRIPT_KANNADA:
- case HB_SCRIPT_KAYAH_LI:
- case HB_SCRIPT_KHAROSHTHI:
- case HB_SCRIPT_KHMER:
- case HB_SCRIPT_LAO:
- case HB_SCRIPT_LEPCHA:
- case HB_SCRIPT_LIMBU:
case HB_SCRIPT_MALAYALAM:
- case HB_SCRIPT_MEETEI_MAYEK:
- case HB_SCRIPT_MYANMAR:
- case HB_SCRIPT_NEW_TAI_LUE:
case HB_SCRIPT_ORIYA:
- case HB_SCRIPT_PHAGS_PA:
- case HB_SCRIPT_REJANG:
- case HB_SCRIPT_SAURASHTRA:
+ case HB_SCRIPT_TAMIL:
+ case HB_SCRIPT_TELUGU:
+
+ /* Unicode-3.0 additions */
+ case HB_SCRIPT_KHMER:
case HB_SCRIPT_SINHALA:
+
+ /* Unicode-4.1 additions */
+ case HB_SCRIPT_BUGINESE:
+ case HB_SCRIPT_KHAROSHTHI:
+ case HB_SCRIPT_NEW_TAI_LUE:
+
+ /* Unicode-5.0 additions */
+ case HB_SCRIPT_BALINESE:
+
+ /* Unicode-5.1 additions */
+ case HB_SCRIPT_CHAM:
+ case HB_SCRIPT_LEPCHA:
+ case HB_SCRIPT_REJANG:
case HB_SCRIPT_SUNDANESE:
- case HB_SCRIPT_SYLOTI_NAGRI:
- case HB_SCRIPT_TAGALOG:
- case HB_SCRIPT_TAGBANWA:
- case HB_SCRIPT_TAI_LE:
+
+ /* Unicode-5.2 additions */
+ case HB_SCRIPT_JAVANESE:
+ case HB_SCRIPT_KAITHI:
case HB_SCRIPT_TAI_THAM:
- case HB_SCRIPT_TAI_VIET:
- case HB_SCRIPT_TAMIL:
- case HB_SCRIPT_TELUGU:
- case HB_SCRIPT_THAI:
- case HB_SCRIPT_TIBETAN:
+
+ /* Unicode-6.1 additions */
+ case HB_SCRIPT_CHAKMA:
+ case HB_SCRIPT_SHARADA:
+ case HB_SCRIPT_TAKRI:
+
return hb_ot_complex_shaper_indic;
- default:
- return hb_ot_complex_shaper_none;
+ /* ^--- Add new shapers here */
}
}
*
* Called during shape_plan().
*
- * Shapers should use plan->map to add their features.
+ * Shapers should use map to add their features and callbacks.
*/
-HB_INTERNAL void _hb_ot_shape_complex_collect_features_arabic (hb_ot_shape_planner_t *plan, const hb_segment_properties_t *props);
-HB_INTERNAL void _hb_ot_shape_complex_collect_features_indic (hb_ot_shape_planner_t *plan, const hb_segment_properties_t *props);
+typedef void hb_ot_shape_complex_collect_features_func_t (hb_ot_map_builder_t *map, const hb_segment_properties_t *props);
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
+ HB_INTERNAL hb_ot_shape_complex_collect_features_func_t _hb_ot_shape_complex_collect_features_##name;
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
static inline void
-hb_ot_shape_complex_collect_features (hb_ot_shape_planner_t *planner,
+hb_ot_shape_complex_collect_features (hb_ot_complex_shaper_t shaper,
+ hb_ot_map_builder_t *map,
const hb_segment_properties_t *props)
{
- switch (planner->shaper) {
- case hb_ot_complex_shaper_arabic: _hb_ot_shape_complex_collect_features_arabic (planner, props); return;
- case hb_ot_complex_shaper_indic: _hb_ot_shape_complex_collect_features_indic (planner, props); return;
- case hb_ot_complex_shaper_none: default: return;
+ switch (shaper) {
+ default:
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
+ case hb_ot_complex_shaper_##name: _hb_ot_shape_complex_collect_features_##name (map, props); return;
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
+ }
+}
+
+
+/*
+ * normalization_preference()
+ *
+ * Called during shape_execute().
+ *
+ * Shapers should return true if it prefers decomposed (NFD) input rather than precomposed (NFC).
+ */
+
+typedef hb_ot_shape_normalization_mode_t hb_ot_shape_complex_normalization_preference_func_t (void);
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
+ HB_INTERNAL hb_ot_shape_complex_normalization_preference_func_t _hb_ot_shape_complex_normalization_preference_##name;
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
+
+static inline hb_ot_shape_normalization_mode_t
+hb_ot_shape_complex_normalization_preference (hb_ot_complex_shaper_t shaper)
+{
+ switch (shaper) {
+ default:
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
+ case hb_ot_complex_shaper_##name: return _hb_ot_shape_complex_normalization_preference_##name ();
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
}
}
*
* Called during shape_execute().
*
- * Shapers should use c->plan.map to get feature masks and set on buffer.
+ * Shapers should use map to get feature masks and set on buffer.
*/
-HB_INTERNAL void _hb_ot_shape_complex_setup_masks_arabic (hb_ot_shape_context_t *c);
-HB_INTERNAL void _hb_ot_shape_complex_setup_masks_indic (hb_ot_shape_context_t *c);
+typedef void hb_ot_shape_complex_setup_masks_func_t (hb_ot_map_t *map, hb_buffer_t *buffer, hb_font_t *font);
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
+ HB_INTERNAL hb_ot_shape_complex_setup_masks_func_t _hb_ot_shape_complex_setup_masks_##name;
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
static inline void
-hb_ot_shape_complex_setup_masks (hb_ot_shape_context_t *c)
+hb_ot_shape_complex_setup_masks (hb_ot_complex_shaper_t shaper,
+ hb_ot_map_t *map,
+ hb_buffer_t *buffer,
+ hb_font_t *font)
{
- switch (c->plan->shaper) {
- case hb_ot_complex_shaper_arabic: _hb_ot_shape_complex_setup_masks_arabic (c); return;
- case hb_ot_complex_shaper_indic: _hb_ot_shape_complex_setup_masks_indic (c); return;
- case hb_ot_complex_shaper_none: default: return;
+ switch (shaper) {
+ default:
+#define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
+ case hb_ot_complex_shaper_##name: _hb_ot_shape_complex_setup_masks_##name (map, buffer, font); return;
+ HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
+#undef HB_COMPLEX_SHAPER_IMPLEMENT
}
}
-HB_END_DECLS
#endif /* HB_OT_SHAPE_COMPLEX_PRIVATE_HH */
projects / framework / uifw / harfbuzz.git / blobdiff