comparison: src/font.c
src/font.c
- changeset 11
- d83af80eb09b
- child 48
- 6e5b5ba2752c
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| 10:05d329adcecc | 11:d83af80eb09b |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * Copyright 2023 Mike Becker. All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * | |
| 11 * 2. Redistributions in binary form must reproduce the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer in the | |
| 13 * documentation and/or other materials provided with the distribution. | |
| 14 * | |
| 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 25 * POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #include "ascension/font.h" | |
| 29 #include "ascension/context.h" | |
| 30 #include "ascension/error.h" | |
| 31 | |
| 32 static char const *asc_font_filename(enum AscFontStyle style) { | |
| 33 // TODO: do not assume we are running from the program dir | |
| 34 switch (style) { | |
| 35 case ASC_FONT_REGULAR: | |
| 36 return "fonts/OpenSans-Regular.ttf"; | |
| 37 case ASC_FONT_BOLD: | |
| 38 return "fonts/OpenSans-Bold.ttf"; | |
| 39 case ASC_FONT_ITALIC: | |
| 40 return "fonts/OpenSans-Italic.ttf"; | |
| 41 case ASC_FONT_BOLD_ITALIC: | |
| 42 return "fonts/OpenSans-BoldItalic.ttf"; | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 AscFont const *asc_font(enum AscFontStyle style, int size) { | |
| 47 for (unsigned int i = 0 ; i < asc_context.fonts_loaded ; i++) { | |
| 48 AscFont *font = &asc_context.fonts[i]; | |
| 49 if (font->size == size && font->style == style) { | |
| 50 return font; | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 if (asc_context.fonts_loaded == ASC_MAX_FONTS) { | |
| 55 asc_dprintf("WARNING: Maximum number of fonts reached, wiping cache!"); | |
| 56 asc_font_cache_clear(); | |
| 57 } | |
| 58 | |
| 59 unsigned int slot = asc_context.fonts_loaded++; | |
| 60 AscFont *font = &asc_context.fonts[slot]; | |
| 61 font->size = size; | |
| 62 font->style = style; | |
| 63 font->ptr = TTF_OpenFont(asc_font_filename(style), size); | |
| 64 if (font->ptr == NULL) { | |
| 65 asc_context.fonts_loaded--; | |
| 66 asc_error(TTF_GetError()); | |
| 67 return NULL; | |
| 68 } | |
| 69 asc_dprintf("Loaded font size %u, style %u in slot %u", size, style, slot); | |
| 70 return font; | |
| 71 } | |
| 72 | |
| 73 void asc_font_cache_clear(void) { | |
| 74 asc_dprintf("Fonts in cache that are being unloaded: %u", asc_context.fonts_loaded); | |
| 75 while (asc_context.fonts_loaded > 0) { | |
| 76 unsigned int i = --asc_context.fonts_loaded; | |
| 77 AscFont *font = &asc_context.fonts[i]; | |
| 78 TTF_CloseFont(font->ptr); | |
| 79 font->ptr = NULL; | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 AscFont const *asc_font_cache_validate(AscFont const *font) { | |
| 84 if (font->ptr) { | |
| 85 return font; | |
| 86 } else { | |
| 87 asc_dprintf("Cache miss for font size %u, style %u", font->size, font->style); | |
| 88 return asc_font(font->style, font->size); | |
| 89 } | |
| 90 } |
