textedit_wip.h (3097B)
1 /* 2 * This file is part of the Lumidify ToolKit (LTK) 3 * Copyright (c) 2020 lumidify <nobody@lumidify.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 _TEXT_HB_H_ 25 #define _TEXT_HB_H_ 26 27 /* 28 Requires the following includes: 29 <X11/Xlib.h>, <X11/Xutil.h>, "stb_truetype.h", 30 "khash.h", <harfbuzz/hb.h>, <fribidi.h>, 31 <fontconfig/fontconfig.h> 32 */ 33 34 #include "gap_buffer.h" 35 #include "array.h" 36 #include "stack.h" 37 38 /* Note: hb_script_t and FriBidiLevel are really just uint32_t's, but 39 I'm not sure if I should rely on that, so they're separate here */ 40 LTK_GAP_BUFFER_INIT_DECL(uint32, uint32_t) 41 LTK_GAP_BUFFER_INIT_DECL(script, hb_script_t) 42 LTK_GAP_BUFFER_INIT_DECL(int, int) 43 LTK_ARRAY_INIT_DECL(level, FriBidiLevel) 44 LTK_ARRAY_INIT_DECL(int, int) 45 LTK_STACK_INIT_DECL(script, int, hb_script_t, pair_index, script); 46 47 struct ltk_text_run { 48 LtkGlyph *glyphs; 49 unsigned int num_glyphs; 50 struct ltk_text_run *next; 51 struct ltk_text_run *last; 52 size_t start_index; 53 size_t len; 54 int start_x; 55 int start_y; 56 int w; 57 LtkFont *font; 58 uint16_t font_id; 59 hb_script_t script; 60 hb_direction_t dir; 61 } 62 63 struct ltk_text_line { 64 struct ltk_gap_buffer_uint32 *log_buf; /* buffer of the logical text */ 65 struct ltk_gap_buffer_script *scripts; 66 struct ltk_gap_buffer_uint32 *vis_buf; /* buffer of visual text */ 67 struct ltk_gap_buffer_int *log2vis; 68 struct ltk_gap_buffer_int *vis2log; 69 struct ltk_array_level *bidi_levels; 70 struct ltk_text_run *first_run; /* first node in the linked list of runs */ 71 struct ltk_text_run *last_run; /* last node in the linked list of runs */ 72 struct ltk_text_run *cur_run; /* current node in the linked list of runs */ 73 struct ltk_text_line *next; /* next text line in the buffer */ 74 unsigned int height; /* height of the line (including wrapping) */ 75 FribidiCharType dir; /* overall paragraph direction */ 76 struct ltk_array_int *wrap_indeces; 77 size_t len; 78 uint16_t font_size; 79 int y_max; 80 int y_min; 81 int w; 82 int h; 83 XImage *img; 84 }; 85 86 struct ltk_text_buffer { 87 struct ltk_text_line *head; 88 struct ltk_text_line *cur_line; 89 unsigned int line_gap; 90 };