77 lines
2.4 KiB
C
Executable File
77 lines
2.4 KiB
C
Executable File
#include <stddef.h>
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#include <stdlib.h>
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#include "fontdesc.h"
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#include "renderer.h"
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int font_desc_alloc_size(const char *filename) {
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return offsetof(FontDesc, filename) + strlen(filename) + 1;
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}
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void font_desc_init(FontDesc *font_desc, const char *filename, float size, unsigned int font_options) {
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memcpy(font_desc->filename, filename, strlen(filename) + 1);
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font_desc->size = size;
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font_desc->options = font_options;
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font_desc->tab_size = 4;
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font_desc->cache_length = 0;
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font_desc->cache_last_index = 0; /* Normally no need to initialize. */
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}
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void font_desc_free(FontDesc *font_desc) {
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for (int i = 0; i < font_desc->cache_length; i++) {
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ren_free_font(font_desc->cache[i].font);
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}
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font_desc->cache_length = 0;
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}
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void font_desc_set_tab_size(FontDesc *font_desc, int tab_size) {
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font_desc->tab_size = tab_size;
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for (int i = 0; i < font_desc->cache_length; i++) {
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ren_set_font_tab_size(font_desc->cache[i].font, tab_size);
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}
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}
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int font_desc_get_tab_size(FontDesc *font_desc) {
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return font_desc->tab_size;
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}
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static void load_scaled_font(FontDesc *font_desc, int index, int scale) {
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RenFont *font = ren_load_font(font_desc->filename, scale * font_desc->size, font_desc->options);
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if (!font) {
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/* The font was able to load when initially loaded using renderer.load.font.
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If now is no longer available we just abort the application. */
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fprintf(stderr, "Fatal error: unable to load font %s. Application will abort.\n",
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font_desc->filename);
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exit(1);
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}
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font_desc->cache[index].font = font;
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font_desc->cache[index].scale = scale;
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}
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RenFont *font_desc_get_font_at_scale(FontDesc *font_desc, int scale) {
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int index = -1;
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for (int i = 0; i < font_desc->cache_length; i++) {
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if (font_desc->cache[i].scale == scale) {
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index = i;
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break;
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}
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}
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if (index < 0) {
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index = font_desc->cache_length;
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if (index < FONT_CACHE_ARRAY_MAX) {
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load_scaled_font(font_desc, index, scale);
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font_desc->cache_length = index + 1;
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} else {
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// FIXME: should not print into the stderr or stdout.
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fprintf(stderr, "Warning: max array of font scale reached.\n");
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index = (font_desc->cache_last_index == 0 ? 1 : 0);
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ren_free_font(font_desc->cache[index].font);
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load_scaled_font(font_desc, index, scale);
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}
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}
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font_desc->cache_last_index = index;
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return font_desc->cache[index].font;
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}
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