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Diffstat (limited to 'libraries/evas/src/lib/engines/common/evas_font_ot.c')
-rw-r--r--libraries/evas/src/lib/engines/common/evas_font_ot.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/libraries/evas/src/lib/engines/common/evas_font_ot.c b/libraries/evas/src/lib/engines/common/evas_font_ot.c
deleted file mode 100644
index 2912d55..0000000
--- a/libraries/evas/src/lib/engines/common/evas_font_ot.c
+++ /dev/null
@@ -1,336 +0,0 @@
1#include "evas_font_ot.h"
2
3#ifdef USE_HARFBUZZ
4# include <hb.h>
5# include <hb-ft.h>
6#endif
7
8#include "evas_common.h"
9
10#include <Eina.h>
11#include "evas_font_private.h"
12
13#ifdef USE_HARFBUZZ
14static const hb_script_t
15_evas_script_to_harfbuzz[] =
16{
17 HB_SCRIPT_COMMON,
18 HB_SCRIPT_INHERITED,
19 HB_SCRIPT_ARABIC,
20 HB_SCRIPT_ARMENIAN,
21 HB_SCRIPT_BENGALI,
22 HB_SCRIPT_BOPOMOFO,
23 HB_SCRIPT_CHEROKEE,
24 HB_SCRIPT_COPTIC,
25 HB_SCRIPT_CYRILLIC,
26 HB_SCRIPT_DESERET,
27 HB_SCRIPT_DEVANAGARI,
28 HB_SCRIPT_ETHIOPIC,
29 HB_SCRIPT_GEORGIAN,
30 HB_SCRIPT_GOTHIC,
31 HB_SCRIPT_GREEK,
32 HB_SCRIPT_GUJARATI,
33 HB_SCRIPT_GURMUKHI,
34 HB_SCRIPT_HAN,
35 HB_SCRIPT_HANGUL,
36 HB_SCRIPT_HEBREW,
37 HB_SCRIPT_HIRAGANA,
38 HB_SCRIPT_KANNADA,
39 HB_SCRIPT_KATAKANA,
40 HB_SCRIPT_KHMER,
41 HB_SCRIPT_LAO,
42 HB_SCRIPT_LATIN,
43 HB_SCRIPT_MALAYALAM,
44 HB_SCRIPT_MONGOLIAN,
45 HB_SCRIPT_MYANMAR,
46 HB_SCRIPT_OGHAM,
47 HB_SCRIPT_OLD_ITALIC,
48 HB_SCRIPT_ORIYA,
49 HB_SCRIPT_RUNIC,
50 HB_SCRIPT_SINHALA,
51 HB_SCRIPT_SYRIAC,
52 HB_SCRIPT_TAMIL,
53 HB_SCRIPT_TELUGU,
54 HB_SCRIPT_THAANA,
55 HB_SCRIPT_THAI,
56 HB_SCRIPT_TIBETAN,
57 HB_SCRIPT_CANADIAN_ABORIGINAL,
58 HB_SCRIPT_YI,
59 HB_SCRIPT_TAGALOG,
60 HB_SCRIPT_HANUNOO,
61 HB_SCRIPT_BUHID,
62 HB_SCRIPT_TAGBANWA,
63
64 /* Unicode-4.0 additions */
65 HB_SCRIPT_BRAILLE,
66 HB_SCRIPT_CYPRIOT,
67 HB_SCRIPT_LIMBU,
68 HB_SCRIPT_OSMANYA,
69 HB_SCRIPT_SHAVIAN,
70 HB_SCRIPT_LINEAR_B,
71 HB_SCRIPT_TAI_LE,
72 HB_SCRIPT_UGARITIC,
73
74 /* Unicode-4.1 additions */
75 HB_SCRIPT_NEW_TAI_LUE,
76 HB_SCRIPT_BUGINESE,
77 HB_SCRIPT_GLAGOLITIC,
78 HB_SCRIPT_TIFINAGH,
79 HB_SCRIPT_SYLOTI_NAGRI,
80 HB_SCRIPT_OLD_PERSIAN,
81 HB_SCRIPT_KHAROSHTHI,
82
83 /* Unicode-5.0 additions */
84 HB_SCRIPT_UNKNOWN,
85 HB_SCRIPT_BALINESE,
86 HB_SCRIPT_CUNEIFORM,
87 HB_SCRIPT_PHOENICIAN,
88 HB_SCRIPT_PHAGS_PA,
89 HB_SCRIPT_NKO,
90
91 /* Unicode-5.1 additions */
92 HB_SCRIPT_KAYAH_LI,
93 HB_SCRIPT_LEPCHA,
94 HB_SCRIPT_REJANG,
95 HB_SCRIPT_SUNDANESE,
96 HB_SCRIPT_SAURASHTRA,
97 HB_SCRIPT_CHAM,
98 HB_SCRIPT_OL_CHIKI,
99 HB_SCRIPT_VAI,
100 HB_SCRIPT_CARIAN,
101 HB_SCRIPT_LYCIAN,
102 HB_SCRIPT_LYDIAN,
103
104 /* Unicode-5.2 additions */
105 HB_SCRIPT_AVESTAN,
106 HB_SCRIPT_BAMUM,
107 HB_SCRIPT_EGYPTIAN_HIEROGLYPHS,
108 HB_SCRIPT_IMPERIAL_ARAMAIC,
109 HB_SCRIPT_INSCRIPTIONAL_PAHLAVI,
110 HB_SCRIPT_INSCRIPTIONAL_PARTHIAN,
111 HB_SCRIPT_JAVANESE,
112 HB_SCRIPT_KAITHI,
113 HB_SCRIPT_TAI_THAM,
114 HB_SCRIPT_LISU,
115 HB_SCRIPT_MEETEI_MAYEK,
116 HB_SCRIPT_OLD_SOUTH_ARABIAN,
117 HB_SCRIPT_OLD_TURKIC,
118 HB_SCRIPT_SAMARITAN,
119 HB_SCRIPT_TAI_VIET,
120
121 /* Unicode-6.0 additions */
122 HB_SCRIPT_BATAK,
123 HB_SCRIPT_BRAHMI,
124 HB_SCRIPT_MANDAIC
125};
126#endif
127
128#ifdef OT_SUPPORT
129/* FIXME: doc. returns #items */
130EAPI int
131evas_common_font_ot_cluster_size_get(const Evas_Text_Props *props, size_t char_index)
132{
133 int i;
134 int items;
135 int left_bound, right_bound;
136 size_t base_cluster;
137 char_index += props->start;
138 base_cluster = EVAS_FONT_OT_POS_GET(props->info->ot[char_index]);
139 for (i = (int) char_index ;
140 (i >= (int) props->start) &&
141 (EVAS_FONT_OT_POS_GET(props->info->ot[i]) == base_cluster) ;
142 i--)
143 ;
144 left_bound = i;
145 for (i = (int) char_index + 1;
146 (i < (int) (props->start + props->len)) &&
147 (EVAS_FONT_OT_POS_GET(props->info->ot[i]) == base_cluster) ;
148 i++)
149 ;
150 right_bound = i;
151
152 if (right_bound == left_bound)
153 {
154 items = 1;
155 }
156 else if (props->bidi.dir == EVAS_BIDI_DIRECTION_RTL)
157 {
158 if (left_bound < 0)
159 {
160 items = props->text_offset + props->text_len - base_cluster;
161 }
162 else
163 {
164 items = props->info->ot[left_bound].source_cluster - base_cluster;
165 }
166 }
167 else
168 {
169 if (right_bound >= (int) (props->text_offset + props->text_len))
170 {
171 items = props->text_offset + props->text_len - base_cluster;
172 }
173 else
174 {
175 items = props->info->ot[right_bound].source_cluster - base_cluster;
176 }
177 }
178 return (items > 0) ? items : 1;
179}
180
181/* Harfbuzz font functions */
182
183static hb_position_t
184_evas_common_font_ot_hb_get_glyph_advance(hb_font_t *font,
185 void *font_data, hb_codepoint_t glyph,
186 void *user_data)
187{
188 /* Use our cache*/
189 RGBA_Font_Int *fi = (RGBA_Font_Int *) font_data;
190 RGBA_Font_Glyph *fg;
191 (void) font;
192 (void) user_data;
193 fg = evas_common_font_int_cache_glyph_get(fi, glyph);
194 if (fg)
195 {
196 return fg->glyph->advance.x >> 10;
197 }
198 return 0;
199}
200
201static hb_position_t
202_evas_common_font_ot_hb_get_kerning(hb_font_t *font, void *font_data,
203 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph, void *user_data)
204{
205 RGBA_Font_Int *fi = (RGBA_Font_Int *) font_data;
206 int kern;
207 (void) font;
208 (void) user_data;
209 if (evas_common_font_query_kerning(fi, first_glyph, second_glyph, &kern))
210 return kern;
211
212 return 0;
213}
214
215/* End of harfbuzz font funcs */
216
217static inline hb_font_funcs_t *
218_evas_common_font_ot_font_funcs_get(void)
219{
220 static hb_font_funcs_t *font_funcs = NULL;
221 if (!font_funcs)
222 {
223 font_funcs = hb_font_funcs_create();
224 hb_font_funcs_set_glyph_h_advance_func(font_funcs,
225 _evas_common_font_ot_hb_get_glyph_advance, NULL, NULL);
226 hb_font_funcs_set_glyph_h_kerning_func(font_funcs,
227 _evas_common_font_ot_hb_get_kerning, NULL, NULL);
228 }
229
230 return font_funcs;
231}
232
233static inline hb_unicode_funcs_t *
234_evas_common_font_ot_unicode_funcs_get(void)
235{
236 static hb_unicode_funcs_t *unicode_funcs = NULL;
237 if (!unicode_funcs)
238 {
239 unicode_funcs = hb_unicode_funcs_get_default();
240 }
241
242 return unicode_funcs;
243}
244
245static void
246_evas_common_font_ot_shape(hb_buffer_t *buffer, RGBA_Font_Int *fi)
247{
248 /* Create hb_font if not previously created */
249 if (!fi->ft.hb_font)
250 {
251 hb_font_t *hb_ft_font;
252
253 hb_ft_font = hb_ft_font_create(fi->src->ft.face, NULL);
254 fi->ft.hb_font = hb_font_create_sub_font(hb_ft_font);
255 hb_font_destroy(hb_ft_font);
256
257 hb_font_set_funcs(fi->ft.hb_font,
258 _evas_common_font_ot_font_funcs_get(), fi, NULL);
259 }
260
261 hb_shape(fi->ft.hb_font, buffer, NULL, 0);
262}
263
264EAPI Eina_Bool
265evas_common_font_ot_populate_text_props(const Eina_Unicode *text,
266 Evas_Text_Props *props, int len)
267{
268 RGBA_Font_Int *fi;
269 hb_buffer_t *buffer;
270 hb_glyph_position_t *positions;
271 hb_glyph_info_t *infos;
272 int slen;
273 unsigned int i;
274 Evas_Font_Glyph_Info *gl_itr;
275 Evas_Font_OT_Info *ot_itr;
276 Evas_Coord pen_x = 0;
277
278 fi = props->font_instance;
279
280 if (len < 0)
281 {
282 slen = eina_unicode_strlen(text);
283 }
284 else
285 {
286 slen = len;
287 }
288
289 buffer = hb_buffer_create();
290 hb_buffer_set_unicode_funcs(buffer, _evas_common_font_ot_unicode_funcs_get());
291 hb_buffer_set_language(buffer, hb_language_from_string(
292 evas_common_language_from_locale_get(), -1));
293 hb_buffer_set_script(buffer, _evas_script_to_harfbuzz[props->script]);
294 hb_buffer_set_direction(buffer,
295 (props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) ?
296 HB_DIRECTION_RTL : HB_DIRECTION_LTR);
297 /* FIXME: add run-time conversions if needed, which is very unlikely */
298 hb_buffer_add_utf32(buffer, (const uint32_t *) text, slen, 0, slen);
299
300 _evas_common_font_ot_shape(buffer, fi);
301
302 props->len = hb_buffer_get_length(buffer);
303 props->info->ot = calloc(props->len,
304 sizeof(Evas_Font_OT_Info));
305 props->info->glyph = calloc(props->len,
306 sizeof(Evas_Font_Glyph_Info));
307 positions = hb_buffer_get_glyph_positions(buffer, NULL);
308 infos = hb_buffer_get_glyph_infos(buffer, NULL);
309 gl_itr = props->info->glyph;
310 ot_itr = props->info->ot;
311 for (i = 0 ; i < props->len ; i++)
312 {
313 Evas_Coord adv;
314 ot_itr->source_cluster = infos->cluster;
315 ot_itr->x_offset = positions->x_offset;
316 ot_itr->y_offset = positions->y_offset;
317 gl_itr->index = infos->codepoint;
318 adv = positions->x_advance;
319
320 pen_x += adv;
321 gl_itr->pen_after = EVAS_FONT_ROUND_26_6_TO_INT(pen_x);
322
323 ot_itr++;
324 gl_itr++;
325 infos++;
326 positions++;
327 }
328
329 hb_buffer_destroy(buffer);
330 evas_common_font_int_use_trim();
331
332 return EINA_FALSE;
333}
334
335#endif
336
generated by cgit v1.1 at 2024-08-29 22:43:59 +0000