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3c42691e1b
When instantiating a primary font, build the fallback font list, but don't actually instantiate the fallback fonts. Instead, remember the (full) pattern that we should use if/when we instantiate it. Then, when looking up a glyph and we need a fallback font, loop the list and instantiate the font(s) there and then.
75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
#pragma once
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#include <stdbool.h>
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#include <threads.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_LCD_FILTER_H
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#include <fontconfig/fontconfig.h>
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#include <pixman.h>
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#include "tllist.h"
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//#include "terminal.h"
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typedef tll(const char *) font_list_t;
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struct glyph {
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wchar_t wc;
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int cols;
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pixman_image_t *pix;
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int x;
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int y;
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int width;
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int height;
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bool valid;
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};
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typedef tll(struct glyph) hash_entry_t;
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struct font_fallback {
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char *pattern;
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struct font *font;
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};
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struct font {
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char *name;
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mtx_t lock;
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FT_Face face;
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int load_flags;
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int render_flags;
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FT_LcdFilter lcd_filter;
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double pixel_size_fixup; /* Scale factor - should only be used with ARGB32 glyphs */
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bool bgr; /* True for FC_RGBA_BGR and FC_RGBA_VBGR */
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struct {
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int position;
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int thickness;
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} underline;
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struct {
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int position;
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int thickness;
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} strikeout;
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bool is_fallback;
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tll(struct font_fallback) fallbacks;
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size_t ref_counter;
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/* Fields below are only valid for non-fallback fonts */
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FcPattern *fc_pattern;
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FcFontSet *fc_fonts;
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int fc_idx;
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struct font **fc_loaded_fallbacks; /* fc_fonts->nfont array */
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hash_entry_t **glyph_cache;
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};
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struct font *font_from_name(font_list_t names, const char *attributes);
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const struct glyph *font_glyph_for_wc(struct font *font, wchar_t wc);
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void font_destroy(struct font *font);
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