text.h (1993B)
1 /* 2 * This file is part of the Lumidify ToolKit (LTK) 3 * Copyright (c) 2016, 2017 Lumidify Productions <lumidify@openmailbox.org> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a copy 6 * of this software and associated documentation files (the "Software"), to deal 7 * in the Software without restriction, including without limitation the rights 8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 * copies of the Software, and to permit persons to whom the Software is 10 * furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in all 13 * copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 */ 23 24 #ifndef _LTK_TEXT_ 25 #define _LTK_TEXT_ 26 27 /* These unicode routines are taken from 28 * https://github.com/JeffBezanson/cutef8 */ 29 30 /* is c the start of a utf8 sequence? */ 31 #define isutf(c) (((c)&0xC0)!=0x80) 32 33 static const uint32_t offsetsFromUTF8[6] = { 34 0x00000000UL, 0x00003080UL, 0x000E2080UL, 35 0x03C82080UL, 0xFA082080UL, 0x82082080UL 36 }; 37 38 /* next character without NUL character terminator */ 39 uint32_t u8_nextmemchar(const char *s, size_t *i); 40 41 #define STB_TRUETYPE_IMPLEMENTATION 42 #include "stb_truetype.h" /* http://nothings.org/stb/stb_truetype.h */ 43 44 stbtt_fontinfo ltk_load_font(const char *path); 45 46 int ltk_text_width(uint8_t *text, stbtt_fontinfo fontinfo, int height); 47 48 unsigned char *ltk_render_text(uint8_t *text, stbtt_fontinfo fontinfo, int height, int width); 49 50 #endif