/** * @internal * Calculate the kerning between "left" and "right. * * @param fi the font instance to use * @param left the left glyph index * @param right the right glyph index * @param[out] kerning the kerning calculated. * @return FALSE on error, TRUE on success. */ EAPI int evas_common_font_query_kerning(RGBA_Font_Int *fi, FT_UInt left, FT_UInt right, int *kerning) { int *result; FT_Vector delta; int key[2]; int error = 1; key[0] = left; key[1] = right; result = eina_hash_find(fi->kerning, key); if (result) { *kerning = result[2]; goto on_correct; } /* NOTE: ft2 seems to have a bug. and sometimes returns bizarre * values to kern by - given same font, same size and same * prev_index and index. auto/bytecode or none hinting doesn't * matter */ evas_common_font_int_reload(fi); FTLOCK(); if (FT_Get_Kerning(fi->src->ft.face, key[0], key[1], FT_KERNING_DEFAULT, &delta) == 0) { int *push; FTUNLOCK(); *kerning = delta.x; push = malloc(sizeof (int) * 3); if (!push) return 1; push[0] = key[0]; push[1] = key[1]; push[2] = *kerning; eina_hash_direct_add(fi->kerning, push, push); goto on_correct; } FTUNLOCK(); error = 0; on_correct: return error; }
EAPI Eina_Bool evas_common_text_props_content_create(void *_fi, const Eina_Unicode *text, Evas_Text_Props *text_props, const Evas_BiDi_Paragraph_Props *par_props, size_t par_pos, int len, Evas_Text_Props_Mode mode) { RGBA_Font_Int *fi = (RGBA_Font_Int *) _fi; if (text_props->info) { evas_common_text_props_content_unref(text_props); } if (len == 0) { text_props->info = NULL; text_props->start = text_props->len = text_props->text_offset = 0; } text_props->info = calloc(1, sizeof(Evas_Text_Props_Info)); if (text_props->font_instance != fi) { if (text_props->font_instance) evas_common_font_int_unref(text_props->font_instance); text_props->font_instance = fi; fi->references++; } evas_common_font_int_reload(fi); if (fi->src->current_size != fi->size) { evas_common_font_source_reload(fi->src); FTLOCK(); FT_Activate_Size(fi->ft.size); FTUNLOCK(); fi->src->current_size = fi->size; } text_props->changed = EINA_TRUE; #ifdef OT_SUPPORT (void) par_props; (void) par_pos; _content_create_ot(fi, text, text_props, len, mode); #else _content_create_regular(fi, text, text_props, par_props, par_pos, len, mode); #endif text_props->text_len = len; text_props->info->refcount = 1; return EINA_TRUE; }
EAPI Eina_Bool evas_common_text_props_content_create(void *_fi, const Eina_Unicode *text, Evas_Text_Props *text_props, const Evas_BiDi_Paragraph_Props *par_props, size_t par_pos, int len) { RGBA_Font_Int *fi = (RGBA_Font_Int *) _fi; if (text_props->info) { evas_common_text_props_content_unref(text_props); } if (len == 0) { text_props->info = NULL; text_props->start = text_props->len = text_props->text_offset = 0; } text_props->info = calloc(1, sizeof(Evas_Text_Props_Info)); text_props->font_instance = fi; evas_common_font_int_reload(fi); if (fi->src->current_size != fi->size) { FTLOCK(); FT_Activate_Size(fi->ft.size); FTUNLOCK(); fi->src->current_size = fi->size; } #ifdef OT_SUPPORT size_t char_index; Evas_Font_Glyph_Info *gl_itr; Evas_Coord pen_x = 0, adjust_x = 0; (void) par_props; (void) par_pos; evas_common_font_ot_populate_text_props(text, text_props, len); gl_itr = text_props->info->glyph; for (char_index = 0 ; char_index < text_props->len ; char_index++) { FT_UInt idx; RGBA_Font_Glyph *fg; Eina_Bool is_replacement = EINA_FALSE; /* If we got a malformed index, show the replacement char instead */ if (gl_itr->index == 0) { gl_itr->index = evas_common_get_char_index(fi, REPLACEMENT_CHAR); is_replacement = EINA_TRUE; } idx = gl_itr->index; LKL(fi->ft_mutex); fg = evas_common_font_int_cache_glyph_get(fi, idx); if (!fg) { LKU(fi->ft_mutex); continue; } LKU(fi->ft_mutex); gl_itr->x_bear = fg->glyph_out->left; gl_itr->width = fg->glyph_out->bitmap.width; /* text_props->info->glyph[char_index].advance = * text_props->info->glyph[char_index].index = * already done by the ot function */ if (EVAS_FONT_CHARACTER_IS_INVISIBLE( text[text_props->info->ot[char_index].source_cluster])) { gl_itr->index = 0; /* Reduce the current advance */ if (gl_itr > text_props->info->glyph) { adjust_x -= gl_itr->pen_after - (gl_itr - 1)->pen_after; } else { adjust_x -= gl_itr->pen_after; } } else { if (is_replacement) { /* Update the advance accordingly */ adjust_x += (pen_x + (fg->glyph->advance.x >> 16)) - gl_itr->pen_after; } pen_x = gl_itr->pen_after; } gl_itr->pen_after += adjust_x; fi = text_props->font_instance; gl_itr++; } #else /* We are walking the string in visual ordering */ Evas_Font_Glyph_Info *gl_itr; Eina_Bool use_kerning; FT_UInt prev_index; FT_Face pface = NULL; Evas_Coord pen_x = 0; int adv_d, i; #if !defined(OT_SUPPORT) && defined(BIDI_SUPPORT) Eina_Unicode *base_str = NULL; if (text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) { text = base_str = eina_unicode_strndup(text, len); evas_bidi_shape_string(base_str, par_props, par_pos, len); } #else (void) par_props; (void) par_pos; #endif FTLOCK(); use_kerning = FT_HAS_KERNING(fi->src->ft.face); FTUNLOCK(); prev_index = 0; i = len; text_props->info->glyph = calloc(len, sizeof(Evas_Font_Glyph_Info)); if (text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) { text += len - 1; adv_d = -1; } else { adv_d = 1; } gl_itr = text_props->info->glyph; for ( ; i > 0 ; gl_itr++, text += adv_d, i--) { FT_UInt idx; RGBA_Font_Glyph *fg; int _gl, kern; Evas_Coord adv; _gl = *text; if (_gl == 0) break; idx = evas_common_get_char_index(fi, _gl); if (idx == 0) { idx = evas_common_get_char_index(fi, REPLACEMENT_CHAR); } LKL(fi->ft_mutex); fg = evas_common_font_int_cache_glyph_get(fi, idx); if (!fg) { LKU(fi->ft_mutex); continue; } kern = 0; if ((use_kerning) && (prev_index) && (idx) && (pface == fi->src->ft.face)) { if (evas_common_font_query_kerning(fi, prev_index, idx, &kern)) { pen_x += kern; (gl_itr - 1)->pen_after += EVAS_FONT_ROUND_26_6_TO_INT(kern); } } pface = fi->src->ft.face; LKU(fi->ft_mutex); gl_itr->index = idx; gl_itr->x_bear = fg->glyph_out->left; adv = fg->glyph->advance.x >> 10; gl_itr->width = fg->glyph_out->bitmap.width; if (EVAS_FONT_CHARACTER_IS_INVISIBLE(_gl)) { gl_itr->index = 0; } else { pen_x += adv; } gl_itr->pen_after = EVAS_FONT_ROUND_26_6_TO_INT(pen_x); prev_index = idx; } text_props->len = len; # if !defined(OT_SUPPORT) && defined(BIDI_SUPPORT) if (base_str) free(base_str); # endif #endif text_props->text_len = len; text_props->info->refcount = 1; return EINA_TRUE; }
static inline void _content_create_regular(RGBA_Font_Int *fi, const Eina_Unicode *text, Evas_Text_Props *text_props, const Evas_BiDi_Paragraph_Props *par_props, size_t par_pos, int len, Evas_Text_Props_Mode mode) { /* We are walking the string in visual ordering */ Evas_Font_Glyph_Info *gl_itr; Eina_Bool use_kerning; FT_UInt prev_index; FT_Face pface = NULL; Evas_Coord pen_x = 0; int adv_d, i; #if !defined(OT_SUPPORT) && defined(BIDI_SUPPORT) Eina_Unicode *base_str = NULL; if (mode == EVAS_TEXT_PROPS_MODE_SHAPE) { if (text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) { text = base_str = eina_unicode_strndup(text, len); evas_bidi_shape_string(base_str, par_props, par_pos, len); } } #else (void) mode; (void) par_props; (void) par_pos; #endif FTLOCK(); use_kerning = FT_HAS_KERNING(fi->src->ft.face); FTUNLOCK(); prev_index = 0; i = len; text_props->info->glyph = calloc(len, sizeof(Evas_Font_Glyph_Info)); if (text_props->bidi.dir == EVAS_BIDI_DIRECTION_RTL) { text += len - 1; adv_d = -1; } else { adv_d = 1; } gl_itr = text_props->info->glyph; for ( ; i > 0 ; gl_itr++, text += adv_d, i--) { FT_UInt idx; RGBA_Font_Glyph *fg; int _gl, kern; Evas_Coord adv; _gl = *text; if (_gl == 0) break; idx = evas_common_get_char_index(fi, _gl); if (idx == 0) { idx = evas_common_get_char_index(fi, REPLACEMENT_CHAR); } fg = evas_common_font_int_cache_glyph_get(fi, idx); if (!fg) continue; kern = 0; if ((use_kerning) && (prev_index) && (idx) && (pface == fi->src->ft.face)) { if (evas_common_font_query_kerning(fi, prev_index, idx, &kern)) { pen_x += kern; (gl_itr - 1)->pen_after += EVAS_FONT_ROUND_26_6_TO_INT(kern); } } pface = fi->src->ft.face; gl_itr->index = idx; gl_itr->x_bear = fg->x_bear; gl_itr->y_bear = fg->y_bear; adv = fg->glyph->advance.x >> 10; gl_itr->width = fg->width; if (EVAS_FONT_CHARACTER_IS_INVISIBLE(_gl)) { gl_itr->index = 0; } else { pen_x += adv; } gl_itr->pen_after = EVAS_FONT_ROUND_26_6_TO_INT(pen_x); prev_index = idx; } text_props->len = len; # if !defined(OT_SUPPORT) && defined(BIDI_SUPPORT) if (base_str) free(base_str); # endif }