2011-01-30 02:36:39 -08:00
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#include "evas_font_ot.h"
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2011-05-02 00:27:59 -07:00
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#ifdef USE_HARFBUZZ
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2011-01-30 02:36:39 -08:00
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# include <hb.h>
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# include <hb-ft.h>
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#endif
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#include "evas_common.h"
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#include <Eina.h>
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#include "evas_font_private.h"
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2011-05-02 00:28:07 -07:00
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#ifdef USE_HARFBUZZ
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static const hb_script_t
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_evas_script_to_harfbuzz[] =
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{
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HB_SCRIPT_COMMON,
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HB_SCRIPT_INHERITED,
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HB_SCRIPT_ARABIC,
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HB_SCRIPT_ARMENIAN,
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HB_SCRIPT_BENGALI,
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HB_SCRIPT_BOPOMOFO,
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HB_SCRIPT_CHEROKEE,
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HB_SCRIPT_COPTIC,
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HB_SCRIPT_CYRILLIC,
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HB_SCRIPT_DESERET,
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HB_SCRIPT_DEVANAGARI,
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HB_SCRIPT_ETHIOPIC,
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HB_SCRIPT_GEORGIAN,
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HB_SCRIPT_GOTHIC,
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HB_SCRIPT_GREEK,
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HB_SCRIPT_GUJARATI,
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HB_SCRIPT_GURMUKHI,
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HB_SCRIPT_HAN,
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HB_SCRIPT_HANGUL,
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HB_SCRIPT_HEBREW,
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HB_SCRIPT_HIRAGANA,
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HB_SCRIPT_KANNADA,
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HB_SCRIPT_KATAKANA,
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HB_SCRIPT_KHMER,
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HB_SCRIPT_LAO,
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HB_SCRIPT_LATIN,
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HB_SCRIPT_MALAYALAM,
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HB_SCRIPT_MONGOLIAN,
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HB_SCRIPT_MYANMAR,
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HB_SCRIPT_OGHAM,
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HB_SCRIPT_OLD_ITALIC,
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HB_SCRIPT_ORIYA,
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HB_SCRIPT_RUNIC,
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HB_SCRIPT_SINHALA,
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HB_SCRIPT_SYRIAC,
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HB_SCRIPT_TAMIL,
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HB_SCRIPT_TELUGU,
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HB_SCRIPT_THAANA,
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HB_SCRIPT_THAI,
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HB_SCRIPT_TIBETAN,
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HB_SCRIPT_CANADIAN_ABORIGINAL,
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HB_SCRIPT_YI,
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HB_SCRIPT_TAGALOG,
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HB_SCRIPT_HANUNOO,
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HB_SCRIPT_BUHID,
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HB_SCRIPT_TAGBANWA,
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/* Unicode-4.0 additions */
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HB_SCRIPT_BRAILLE,
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HB_SCRIPT_CYPRIOT,
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HB_SCRIPT_LIMBU,
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HB_SCRIPT_OSMANYA,
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HB_SCRIPT_SHAVIAN,
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HB_SCRIPT_LINEAR_B,
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HB_SCRIPT_TAI_LE,
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HB_SCRIPT_UGARITIC,
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/* Unicode-4.1 additions */
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HB_SCRIPT_NEW_TAI_LUE,
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HB_SCRIPT_BUGINESE,
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HB_SCRIPT_GLAGOLITIC,
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HB_SCRIPT_TIFINAGH,
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HB_SCRIPT_SYLOTI_NAGRI,
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HB_SCRIPT_OLD_PERSIAN,
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HB_SCRIPT_KHAROSHTHI,
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/* Unicode-5.0 additions */
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HB_SCRIPT_UNKNOWN,
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HB_SCRIPT_BALINESE,
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HB_SCRIPT_CUNEIFORM,
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HB_SCRIPT_PHOENICIAN,
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HB_SCRIPT_PHAGS_PA,
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HB_SCRIPT_NKO,
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/* Unicode-5.1 additions */
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HB_SCRIPT_KAYAH_LI,
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HB_SCRIPT_LEPCHA,
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HB_SCRIPT_REJANG,
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HB_SCRIPT_SUNDANESE,
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HB_SCRIPT_SAURASHTRA,
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HB_SCRIPT_CHAM,
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HB_SCRIPT_OL_CHIKI,
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HB_SCRIPT_VAI,
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HB_SCRIPT_CARIAN,
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HB_SCRIPT_LYCIAN,
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HB_SCRIPT_LYDIAN,
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/* Unicode-5.2 additions */
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HB_SCRIPT_AVESTAN,
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HB_SCRIPT_BAMUM,
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HB_SCRIPT_EGYPTIAN_HIEROGLYPHS,
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HB_SCRIPT_IMPERIAL_ARAMAIC,
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HB_SCRIPT_INSCRIPTIONAL_PAHLAVI,
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HB_SCRIPT_INSCRIPTIONAL_PARTHIAN,
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HB_SCRIPT_JAVANESE,
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HB_SCRIPT_KAITHI,
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HB_SCRIPT_TAI_THAM,
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HB_SCRIPT_LISU,
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HB_SCRIPT_MEETEI_MAYEK,
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HB_SCRIPT_OLD_SOUTH_ARABIAN,
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HB_SCRIPT_OLD_TURKIC,
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HB_SCRIPT_SAMARITAN,
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HB_SCRIPT_TAI_VIET,
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/* Unicode-6.0 additions */
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HB_SCRIPT_BATAK,
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HB_SCRIPT_BRAHMI,
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HB_SCRIPT_MANDAIC
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};
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#endif
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2011-01-30 02:36:39 -08:00
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#ifdef OT_SUPPORT
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2011-01-30 02:37:29 -08:00
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/* FIXME: doc. returns #items */
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EAPI int
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2011-02-01 04:17:52 -08:00
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evas_common_font_ot_cluster_size_get(const Evas_Text_Props *props, size_t char_index)
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2011-01-30 02:37:29 -08:00
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{
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int i;
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int items;
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int left_bound, right_bound;
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2011-02-22 05:00:02 -08:00
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size_t base_cluster;
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char_index += props->start;
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base_cluster = EVAS_FONT_OT_POS_GET(props->info->ot[char_index]);
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2011-01-30 02:37:29 -08:00
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for (i = (int) char_index ;
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2011-02-01 04:17:52 -08:00
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(i >= (int) props->start) &&
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(EVAS_FONT_OT_POS_GET(props->info->ot[i]) == base_cluster) ;
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2011-01-30 02:37:29 -08:00
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i--)
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;
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left_bound = i;
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for (i = (int) char_index + 1;
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2011-02-01 04:17:52 -08:00
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(i < (int) (props->start + props->len)) &&
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(EVAS_FONT_OT_POS_GET(props->info->ot[i]) == base_cluster) ;
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2011-01-30 02:37:29 -08:00
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i++)
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;
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right_bound = i;
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2011-02-01 04:17:52 -08:00
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2011-01-30 02:37:29 -08:00
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if (right_bound == left_bound)
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{
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items = 1;
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}
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else if (props->bidi.dir == EVAS_BIDI_DIRECTION_RTL)
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{
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if (left_bound < 0)
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{
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2011-02-13 04:57:37 -08:00
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items = props->text_offset + props->text_len - base_cluster;
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2011-01-30 02:37:29 -08:00
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}
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else
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{
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2011-02-13 04:57:37 -08:00
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items = props->info->ot[left_bound].source_cluster - base_cluster;
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2011-01-30 02:37:29 -08:00
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}
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}
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else
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{
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2011-02-14 07:02:52 -08:00
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if (right_bound >= (int) (props->text_offset + props->text_len))
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2011-01-30 02:37:29 -08:00
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{
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2011-02-13 04:57:37 -08:00
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items = props->text_offset + props->text_len - base_cluster;
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2011-01-30 02:37:29 -08:00
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}
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else
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{
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2011-02-13 04:57:37 -08:00
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items = props->info->ot[right_bound].source_cluster - base_cluster;
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2011-01-30 02:37:29 -08:00
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}
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}
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return (items > 0) ? items : 1;
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}
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2011-02-02 00:24:57 -08:00
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/* Harfbuzz font functions */
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static void
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2011-05-15 04:59:54 -07:00
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_evas_common_font_ot_hb_get_glyph_advance(hb_font_t *font,
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void *font_data, hb_codepoint_t glyph,
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hb_position_t *x_advance, hb_position_t *y_advance,
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void *user_data)
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2011-02-02 00:24:57 -08:00
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{
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/* Use our cache*/
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2011-05-15 04:59:54 -07:00
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RGBA_Font_Int *fi = (RGBA_Font_Int *) font_data;
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2011-02-02 00:24:57 -08:00
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RGBA_Font_Glyph *fg;
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(void) font;
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2011-05-15 04:59:54 -07:00
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(void) user_data;
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2011-02-02 00:24:57 -08:00
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fg = evas_common_font_int_cache_glyph_get(fi, glyph);
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if (fg)
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{
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*x_advance = fg->glyph->advance.x >> 10;
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*y_advance = fg->glyph->advance.y >> 10;
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}
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}
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static void
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2011-05-15 04:59:54 -07:00
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_evas_common_font_ot_hb_get_kerning(hb_font_t *font, void *font_data,
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hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
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hb_position_t *x_kern, hb_position_t *y_kern, void *user_data)
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2011-02-02 00:24:57 -08:00
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{
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2011-05-15 04:59:54 -07:00
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RGBA_Font_Int *fi = (RGBA_Font_Int *) font_data;
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2011-02-02 00:24:57 -08:00
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int kern;
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(void) font;
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2011-05-15 04:59:54 -07:00
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(void) user_data;
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2011-02-02 00:24:57 -08:00
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if (evas_common_font_query_kerning(fi, first_glyph, second_glyph, &kern))
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2011-05-15 04:59:54 -07:00
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*x_kern = kern;
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2011-02-02 00:24:57 -08:00
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else
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2011-05-15 04:59:54 -07:00
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return;
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*y_kern = 0;
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2011-02-02 00:24:57 -08:00
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}
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/* End of harfbuzz font funcs */
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2011-05-02 02:27:49 -07:00
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static inline hb_font_funcs_t *
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2011-02-02 00:24:57 -08:00
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_evas_common_font_ot_font_funcs_get(void)
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{
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static hb_font_funcs_t *font_funcs = NULL;
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if (!font_funcs)
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{
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font_funcs = hb_font_funcs_create();
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hb_font_funcs_set_glyph_advance_func(font_funcs,
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2011-05-15 04:59:54 -07:00
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_evas_common_font_ot_hb_get_glyph_advance, NULL, NULL);
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2011-02-02 00:24:57 -08:00
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hb_font_funcs_set_kerning_func(font_funcs,
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2011-05-15 04:59:54 -07:00
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_evas_common_font_ot_hb_get_kerning, NULL, NULL);
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2011-02-02 00:24:57 -08:00
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}
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return font_funcs;
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}
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2011-05-02 02:27:49 -07:00
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static inline hb_unicode_funcs_t *
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_evas_common_font_ot_unicode_funcs_get(void)
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{
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static hb_unicode_funcs_t *unicode_funcs = NULL;
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if (!unicode_funcs)
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{
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unicode_funcs = hb_unicode_funcs_get_default();
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}
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return unicode_funcs;
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}
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2011-01-30 02:36:39 -08:00
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static void
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2011-02-02 00:24:57 -08:00
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_evas_common_font_ot_shape(hb_buffer_t *buffer, RGBA_Font_Int *fi)
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2011-01-30 02:36:39 -08:00
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{
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2011-05-15 04:59:54 -07:00
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hb_font_t *hb_font, *hb_ft_font;
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hb_ft_font = hb_ft_font_create(fi->src->ft.face, NULL);
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hb_font = hb_font_create_sub_font(hb_ft_font);
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2011-01-30 02:36:39 -08:00
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2011-04-21 07:04:53 -07:00
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hb_font_set_funcs(hb_font, _evas_common_font_ot_font_funcs_get(), fi, NULL);
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2011-01-30 02:36:39 -08:00
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2011-05-15 04:59:54 -07:00
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hb_shape(hb_font, buffer, NULL, 0);
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2011-01-30 02:36:39 -08:00
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hb_font_destroy(hb_font);
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2011-05-15 04:59:54 -07:00
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hb_font_destroy(hb_ft_font);
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2011-01-30 02:36:39 -08:00
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}
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EAPI Eina_Bool
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2011-05-18 04:18:00 -07:00
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evas_common_font_ot_populate_text_props(void *_fn __UNUSED__,
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const Eina_Unicode *text, Evas_Text_Props *props, int len)
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2011-01-30 02:36:39 -08:00
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{
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RGBA_Font_Int *fi;
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hb_buffer_t *buffer;
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hb_glyph_position_t *positions;
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hb_glyph_info_t *infos;
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int slen;
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unsigned int i;
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2011-03-20 08:05:05 -07:00
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Evas_Font_Glyph_Info *gl_itr;
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Evas_Font_OT_Info *ot_itr;
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2011-04-20 07:20:51 -07:00
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Evas_Coord pen_x = 0;
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2011-01-30 02:36:39 -08:00
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2011-05-18 04:18:00 -07:00
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fi = props->font_instance;
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2011-01-30 02:36:39 -08:00
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if (len < 0)
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{
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slen = eina_unicode_strlen(text);
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}
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else
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{
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slen = len;
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}
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buffer = hb_buffer_create(slen);
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2011-05-02 02:27:49 -07:00
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hb_buffer_set_unicode_funcs(buffer, _evas_common_font_ot_unicode_funcs_get());
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2011-01-30 02:36:39 -08:00
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hb_buffer_set_language(buffer, hb_language_from_string(
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evas_common_language_from_locale_get()));
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2011-05-02 00:28:07 -07:00
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hb_buffer_set_script(buffer, _evas_script_to_harfbuzz[props->script]);
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2011-01-30 02:36:39 -08:00
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hb_buffer_set_direction(buffer,
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(props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) ?
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HB_DIRECTION_RTL : HB_DIRECTION_LTR);
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/* FIXME: add run-time conversions if needed, which is very unlikely */
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hb_buffer_add_utf32(buffer, (const uint32_t *) text, slen, 0, slen);
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2011-02-02 00:24:57 -08:00
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_evas_common_font_ot_shape(buffer, fi);
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2011-01-30 02:36:39 -08:00
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2011-02-01 04:17:52 -08:00
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props->len = hb_buffer_get_length(buffer);
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props->info->ot = calloc(props->len,
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sizeof(Evas_Font_OT_Info));
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props->info->glyph = calloc(props->len,
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sizeof(Evas_Font_Glyph_Info));
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2011-04-21 07:04:53 -07:00
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|
positions = hb_buffer_get_glyph_positions(buffer, NULL);
|
|
|
|
infos = hb_buffer_get_glyph_infos(buffer, NULL);
|
2011-03-20 08:05:05 -07:00
|
|
|
gl_itr = props->info->glyph;
|
|
|
|
ot_itr = props->info->ot;
|
2011-02-01 04:17:52 -08:00
|
|
|
for (i = 0 ; i < props->len ; i++)
|
2011-01-30 02:36:39 -08:00
|
|
|
{
|
2011-04-20 07:20:51 -07:00
|
|
|
Evas_Coord adv;
|
2011-03-20 08:05:05 -07:00
|
|
|
ot_itr->source_cluster = infos->cluster;
|
|
|
|
ot_itr->x_offset = positions->x_offset;
|
|
|
|
ot_itr->y_offset = positions->y_offset;
|
|
|
|
gl_itr->index = infos->codepoint;
|
2011-04-20 07:20:51 -07:00
|
|
|
adv = positions->x_advance;
|
|
|
|
|
|
|
|
pen_x += adv;
|
|
|
|
gl_itr->pen_after = EVAS_FONT_ROUND_26_6_TO_INT(pen_x);
|
2011-03-20 08:05:05 -07:00
|
|
|
|
|
|
|
ot_itr++;
|
|
|
|
gl_itr++;
|
|
|
|
infos++;
|
|
|
|
positions++;
|
2011-01-30 02:36:39 -08:00
|
|
|
}
|
|
|
|
|
|
|
|
hb_buffer_destroy(buffer);
|
2011-01-30 02:40:21 -08:00
|
|
|
evas_common_font_int_use_trim();
|
2011-01-30 02:36:39 -08:00
|
|
|
|
|
|
|
return EINA_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|