2 * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
5 #include "evas_common.h"
7 FT_Library evas_ft_lib = 0;
8 static int initialised = 0;
11 evas_common_font_init(void)
16 if (initialised != 1) return;
17 error = FT_Init_FreeType(&evas_ft_lib);
26 evas_common_font_shutdown(void)
31 if (initialised != 0) return;
33 evas_common_font_cache_set(0);
34 evas_common_font_flush();
36 error = FT_Done_FreeType(evas_ft_lib);
41 evas_common_font_ascent_get(RGBA_Font *fn)
47 evas_common_font_size_use(fn);
49 val = (int)fi->src->ft.face->size->metrics.ascender;
50 if (fi->src->ft.face->units_per_EM == 0)
52 dv = (fi->src->ft.orig_upem * 2048) / fi->src->ft.face->units_per_EM;
53 ret = (val * fi->src->ft.face->size->metrics.y_scale) / (dv * dv);
58 evas_common_font_descent_get(RGBA_Font *fn)
64 evas_common_font_size_use(fn);
66 val = -(int)fi->src->ft.face->size->metrics.descender;
67 if (fi->src->ft.face->units_per_EM == 0)
69 dv = (fi->src->ft.orig_upem * 2048) / fi->src->ft.face->units_per_EM;
70 ret = (val * fi->src->ft.face->size->metrics.y_scale) / (dv * dv);
75 evas_common_font_max_ascent_get(RGBA_Font *fn)
81 evas_common_font_size_use(fn);
83 val = (int)fi->src->ft.face->bbox.yMax;
84 if (fi->src->ft.face->units_per_EM == 0)
86 dv = (fi->src->ft.orig_upem * 2048) / fi->src->ft.face->units_per_EM;
87 ret = (val * fi->src->ft.face->size->metrics.y_scale) / (dv * dv);
92 evas_common_font_max_descent_get(RGBA_Font *fn)
98 evas_common_font_size_use(fn);
100 val = -(int)fi->src->ft.face->bbox.yMin;
101 if (fi->src->ft.face->units_per_EM == 0)
103 dv = (fi->src->ft.orig_upem * 2048) / fi->src->ft.face->units_per_EM;
104 ret = (val * fi->src->ft.face->size->metrics.y_scale) / (dv * dv);
109 evas_common_font_get_line_advance(RGBA_Font *fn)
115 evas_common_font_size_use(fn);
116 fi = fn->fonts->data;
117 val = (int)fi->src->ft.face->size->metrics.height;
118 if (fi->src->ft.face->units_per_EM == 0)
120 dv = (fi->src->ft.orig_upem * 2048) / fi->src->ft.face->units_per_EM;
121 ret = (val * fi->src->ft.face->size->metrics.y_scale) / (dv * dv);
126 evas_common_font_utf8_get_next(unsigned char *buf, int *iindex)
128 /* Reads UTF8 bytes from @buf, starting at *@index and returns
129 * the decoded code point at iindex offset, and advances iindex
130 * to the next code point after this.
132 * Returns 0 to indicate there is no next char
134 int index = *iindex, len, r;
135 unsigned char d, d2, d3, d4;
141 while (buf[index] && ((buf[index] & 0xc0) == 0x80))
143 len = index - *iindex;
150 d2 = buf[*iindex + 1];
151 r = d & 0x1f; /* copy lower 5 */
153 r |= (d2 & 0x3f); /* copy lower 6 */
158 d2 = buf[*iindex + 1];
159 d3 = buf[*iindex + 2];
160 r = d & 0x0f; /* copy lower 4 */
169 d2 = buf[*iindex + 1];
170 d3 = buf[*iindex + 2];
171 d4 = buf[*iindex + 3];
172 r = d & 0x0f; /* copy lower 4 */
186 evas_common_font_utf8_get_prev(unsigned char *buf, int *iindex)
188 /* Reads UTF8 bytes from @buf, starting at *@index and returns
189 * the decoded code point at iindex offset, and advances iindex
190 * to the prev code point after this.
192 * Returns 0 to indicate there is no prev char
194 int index = *iindex, len, r;
195 unsigned char d, d2, d3, d4;
201 while ((index > 0) && ((buf[index] & 0xc0) == 0x80))
203 len = *iindex - index;
211 r = d & 0x1f; /* copy lower 5 */
213 r |= (d2 & 0x3f); /* copy lower 6 */
220 r = d & 0x0f; /* copy lower 4 */
232 r = d & 0x0f; /* copy lower 4 */
246 evas_common_font_utf8_get_last(unsigned char *buf, int buflen)
248 /* jumps to the nul byte at the buffer end and decodes backwards and
249 * returns the offset index byte in the buffer where the last character
250 * in the buffer begins.
252 * Returns -1 to indicate an error
257 if (buflen < 1) return 0;
268 if ((d & 0xc0) != 0x80)