forked from enlightenment/efl
377 lines
9.4 KiB
C
377 lines
9.4 KiB
C
#include "evas_common.h"
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EAPI int
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evas_common_font_query_kerning(RGBA_Font_Int* fi,
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FT_UInt prev, FT_UInt index,
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int* kerning)
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{
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int *result;
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FT_Vector delta;
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int key[2];
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int error = 1;
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key[0] = prev;
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key[1] = index;
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#ifdef HAVE_PTHREAD
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pthread_mutex_lock(&fi->ft_mutex);
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#endif
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result = eina_hash_find(fi->kerning, key);
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if (result)
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{
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*kerning = result[2];
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goto on_correct;
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}
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/* NOTE: ft2 seems to have a bug. and sometimes returns bizarre
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* values to kern by - given same font, same size and same
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* prev_index and index. auto/bytecode or none hinting doesnt
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* matter */
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if (FT_Get_Kerning(fi->src->ft.face,
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key[0], key[1],
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ft_kerning_default, &delta) == 0)
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{
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int *push;
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*kerning = delta.x >> 6;
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push = malloc(sizeof (int) * 3);
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if (!push) return 1;
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push[0] = key[0];
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push[1] = key[1];
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push[2] = *kerning;
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eina_hash_direct_add(fi->kerning, push, push);
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goto on_correct;
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}
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error = 0;
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on_correct:
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#ifdef HAVE_PTHREAD
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pthread_mutex_unlock(&fi->ft_mutex);
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#endif
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return error;
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}
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/* string extents */
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EAPI void
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evas_common_font_query_size(RGBA_Font *fn, const char *text, int *w, int *h)
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{
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int use_kerning;
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int pen_x, pen_y;
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int start_x, end_x;
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int chr;
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FT_UInt prev_index;
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RGBA_Font_Int *fi;
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FT_Face pface = NULL;
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fi = fn->fonts->data;
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start_x = 0;
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end_x = 0;
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pen_x = 0;
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pen_y = 0;
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evas_common_font_size_use(fn);
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use_kerning = FT_HAS_KERNING(fi->src->ft.face);
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prev_index = 0;
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for (chr = 0; text[chr];)
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{
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FT_UInt index;
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RGBA_Font_Glyph *fg;
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int chr_x, chr_y, chr_w;
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int gl, kern;
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gl = evas_common_font_utf8_get_next((unsigned char *)text, &chr);
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if (gl == 0) break;
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index = evas_common_font_glyph_search(fn, &fi, gl);
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/* hmmm kerning means i can't sanely do my own cached metric tables! */
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/* grrr - this means font face sharing is kinda... not an option if */
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/* you want performance */
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kern = 0;
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if ((use_kerning) && (prev_index) && (index) &&
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(pface == fi->src->ft.face))
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if (evas_common_font_query_kerning(fi, prev_index, index, &kern))
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pen_x += kern;
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pface = fi->src->ft.face;
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fg = evas_common_font_int_cache_glyph_get(fi, index);
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if (!fg) continue;
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if (kern < 0) kern = 0;
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chr_x = ((pen_x - kern) + (fg->glyph_out->left));
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chr_y = (pen_y + (fg->glyph_out->top));
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// chr_w = fg->glyph_out->bitmap.width;
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chr_w = fg->glyph_out->bitmap.width + kern;
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{
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int advw;
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advw = ((fg->glyph->advance.x + (kern << 16)) >> 16);
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if (chr_w < advw) chr_w = advw;
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}
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if ((!prev_index) && (chr_x < 0))
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start_x = chr_x;
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if ((chr_x + chr_w) > end_x)
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end_x = chr_x + chr_w;
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pen_x += fg->glyph->advance.x >> 16;
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prev_index = index;
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}
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if (w) *w = end_x - start_x;
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if (h) *h = evas_common_font_max_ascent_get(fn) + evas_common_font_max_descent_get(fn);
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}
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/* text x inset */
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EAPI int
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evas_common_font_query_inset(RGBA_Font *fn, const char *text)
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{
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FT_UInt index;
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RGBA_Font_Glyph *fg;
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int chr;
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int gl;
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RGBA_Font_Int *fi;
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fi = fn->fonts->data;
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chr = 0;
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if (!text[0]) return 0;
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gl = evas_common_font_utf8_get_next((unsigned char *)text, &chr);
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if (gl == 0) return 0;
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evas_common_font_size_use(fn);
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index = evas_common_font_glyph_search(fn, &fi, gl);
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fg = evas_common_font_int_cache_glyph_get(fi, index);
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if (!fg) return 0;
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/*
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printf("fg->glyph_out->left = %i\n"
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"fi->src->ft.face->glyph->bitmap_left = %i\n"
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"fi->src->ft.face->glyph->metrics.horiBearingX = %i\n"
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"fi->src->ft.face->glyph->metrics.horiBearingY = %i\n"
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"fi->src->ft.face->glyph->metrics.horiAdvance = %i\n"
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,
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(int)fg->glyph_out->left,
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(int)fi->src->ft.face->glyph->bitmap_left,
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(int)fi->src->ft.face->glyph->metrics.horiBearingX >> 6,
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(int)fi->src->ft.face->glyph->metrics.horiBearingY >> 6,
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(int)fi->src->ft.face->glyph->metrics.horiAdvance >> 6
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);
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*/
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return fg->glyph_out->left;
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}
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/* h & v advance */
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EAPI void
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evas_common_font_query_advance(RGBA_Font *fn, const char *text, int *h_adv, int *v_adv)
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{
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int use_kerning;
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int pen_x, pen_y;
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int start_x;
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int chr;
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FT_UInt prev_index;
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RGBA_Font_Int *fi;
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FT_Face pface = NULL;
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fi = fn->fonts->data;
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start_x = 0;
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pen_x = 0;
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pen_y = 0;
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evas_common_font_size_use(fn);
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use_kerning = FT_HAS_KERNING(fi->src->ft.face);
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prev_index = 0;
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for (chr = 0; text[chr];)
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{
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FT_UInt index;
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RGBA_Font_Glyph *fg;
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int chr_x, chr_y, chr_w;
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int gl, kern;
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gl = evas_common_font_utf8_get_next((unsigned char *)text, &chr);
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if (gl == 0) break;
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index = evas_common_font_glyph_search(fn, &fi, gl);
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/* hmmm kerning means i can't sanely do my own cached metric tables! */
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/* grrr - this means font face sharing is kinda... not an option if */
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/* you want performance */
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if ((use_kerning) && (prev_index) && (index) &&
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(pface == fi->src->ft.face))
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if (evas_common_font_query_kerning(fi, prev_index, index, &kern))
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pen_x += kern;
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pface = fi->src->ft.face;
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fg = evas_common_font_int_cache_glyph_get(fi, index);
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if (!fg) continue;
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chr_x = (pen_x + (fg->glyph_out->left));
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chr_y = (pen_y + (fg->glyph_out->top));
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chr_w = fg->glyph_out->bitmap.width;
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pen_x += fg->glyph->advance.x >> 16;
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prev_index = index;
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}
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if (v_adv) *v_adv = evas_common_font_get_line_advance(fn);
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if (h_adv) *h_adv = pen_x - start_x;
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}
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/* x y w h for char at char pos */
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EAPI int
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evas_common_font_query_char_coords(RGBA_Font *fn, const char *text, int pos, int *cx, int *cy, int *cw, int *ch)
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{
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int use_kerning;
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int pen_x, pen_y;
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int prev_chr_end;
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int chr;
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int asc, desc;
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FT_UInt prev_index;
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RGBA_Font_Int *fi;
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FT_Face pface = NULL;
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fi = fn->fonts->data;
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pen_x = 0;
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pen_y = 0;
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evas_common_font_size_use(fn);
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use_kerning = FT_HAS_KERNING(fi->src->ft.face);
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prev_index = 0;
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prev_chr_end = 0;
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asc = evas_common_font_max_ascent_get(fn);
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desc = evas_common_font_max_descent_get(fn);
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for (chr = 0; text[chr];)
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{
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int pchr;
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FT_UInt index;
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RGBA_Font_Glyph *fg;
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int chr_x, chr_y, chr_w;
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int gl, kern;
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pchr = chr;
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gl = evas_common_font_utf8_get_next((unsigned char *)text, &chr);
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if (gl == 0) break;
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index = evas_common_font_glyph_search(fn, &fi, gl);
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kern = 0;
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/* hmmm kerning means i can't sanely do my own cached metric tables! */
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/* grrr - this means font face sharing is kinda... not an option if */
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/* you want performance */
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if ((use_kerning) && (prev_index) && (index) &&
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(pface == fi->src->ft.face))
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if (evas_common_font_query_kerning(fi, prev_index, index, &kern))
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pen_x += kern;
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pface = fi->src->ft.face;
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fg = evas_common_font_int_cache_glyph_get(fi, index);
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if (!fg) continue;
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if (kern < 0) kern = 0;
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chr_x = ((pen_x - kern) + (fg->glyph_out->left));
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chr_y = (pen_y + (fg->glyph_out->top));
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chr_w = fg->glyph_out->bitmap.width + (kern);
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/* if (text[chr]) */
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{
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int advw;
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advw = ((fg->glyph->advance.x + (kern << 16)) >> 16);
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if (chr_w < advw) chr_w = advw;
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}
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if (chr_x > prev_chr_end)
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{
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chr_w += (chr_x - prev_chr_end);
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chr_x = prev_chr_end;
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}
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if (pchr == pos)
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{
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if (cx) *cx = chr_x;
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if (cy) *cy = -asc;
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if (cw) *cw = chr_w;
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if (ch) *ch = asc + desc;
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return 1;
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}
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prev_chr_end = chr_x + chr_w;
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pen_x += fg->glyph->advance.x >> 16;
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prev_index = index;
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}
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return 0;
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}
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/* char pos of text at xy pos */
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EAPI int
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evas_common_font_query_text_at_pos(RGBA_Font *fn, const char *text, int x, int y, int *cx, int *cy, int *cw, int *ch)
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{
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int use_kerning;
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int pen_x, pen_y;
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int prev_chr_end;
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int chr;
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int asc, desc;
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FT_UInt prev_index;
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RGBA_Font_Int *fi;
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FT_Face pface = NULL;
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fi = fn->fonts->data;
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pen_x = 0;
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pen_y = 0;
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evas_common_font_size_use(fn);
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use_kerning = FT_HAS_KERNING(fi->src->ft.face);
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prev_index = 0;
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prev_chr_end = 0;
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asc = evas_common_font_max_ascent_get(fn);
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desc = evas_common_font_max_descent_get(fn);
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for (chr = 0; text[chr];)
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{
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int pchr;
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FT_UInt index;
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RGBA_Font_Glyph *fg;
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int chr_x, chr_y, chr_w;
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int gl, kern;
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pchr = chr;
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gl = evas_common_font_utf8_get_next((unsigned char *)text, &chr);
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if (gl == 0) break;
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index = evas_common_font_glyph_search(fn, &fi, gl);
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kern = 0;
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/* hmmm kerning means i can't sanely do my own cached metric tables! */
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/* grrr - this means font face sharing is kinda... not an option if */
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/* you want performance */
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if ((use_kerning) && (prev_index) && (index) &&
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(pface == fi->src->ft.face))
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if (evas_common_font_query_kerning(fi, prev_index, index, &kern))
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pen_x += kern;
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pface = fi->src->ft.face;
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fg = evas_common_font_int_cache_glyph_get(fi, index);
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if (!fg) continue;
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if (kern < 0) kern = 0;
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chr_x = ((pen_x - kern) + (fg->glyph_out->left));
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chr_y = (pen_y + (fg->glyph_out->top));
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chr_w = fg->glyph_out->bitmap.width + kern;
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/* if (text[chr]) */
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{
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int advw;
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advw = ((fg->glyph->advance.x + (kern << 16)) >> 16);
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if (chr_w < advw) chr_w = advw;
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}
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if (chr_x > prev_chr_end)
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{
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chr_w += (chr_x - prev_chr_end);
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chr_x = prev_chr_end;
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}
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if ((x >= chr_x) && (x <= (chr_x + chr_w)) &&
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(y >= -asc) && (y <= desc))
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{
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if (cx) *cx = chr_x;
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if (cy) *cy = -asc;
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if (cw) *cw = chr_w;
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if (ch) *ch = asc + desc;
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return pchr;
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}
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prev_chr_end = chr_x + chr_w;
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pen_x += fg->glyph->advance.x >> 16;
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prev_index = index;
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}
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return -1;
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}
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