Mercurial > molko
annotate src/libmlk-core/core/window.c @ 347:0969931b98e4
core: start removing POSIX APIs
author | David Demelier <markand@malikania.fr> |
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date | Tue, 19 Oct 2021 13:23:30 +0200 |
parents | 8f9937403749 |
children | 460c78706989 |
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1 /* |
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2 * window.c -- basic window management |
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3 * |
314 | 4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #include <assert.h> |
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20 #include <string.h> |
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21 |
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22 #include <SDL.h> |
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23 |
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24 #include "error.h" |
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25 #include "util.h" |
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26 #include "window.h" |
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27 #include "window_p.h" |
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28 |
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29 static struct window_handle handle = { |
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30 .win = NULL, |
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31 .renderer = NULL |
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32 }; |
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33 |
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34 static SDL_Cursor *cursors[WINDOW_CURSOR_LAST]; |
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35 |
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36 struct window window = { |
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37 .handle = &handle |
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38 }; |
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39 |
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40 static void |
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41 load_cursors(void) |
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42 { |
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43 cursors[WINDOW_CURSOR_ARROW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW); |
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44 cursors[WINDOW_CURSOR_EDIT] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM); |
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45 cursors[WINDOW_CURSOR_WAIT] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT); |
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46 cursors[WINDOW_CURSOR_CROSSHAIR] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_CROSSHAIR); |
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47 cursors[WINDOW_CURSOR_SIZE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL); |
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48 cursors[WINDOW_CURSOR_NO] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO); |
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49 cursors[WINDOW_CURSOR_HAND] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND); |
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50 } |
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51 |
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52 static void |
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53 load_framerate(void) |
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54 { |
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55 SDL_DisplayMode mode; |
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56 |
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57 if (SDL_GetWindowDisplayMode(handle.win, &mode) == 0) |
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58 window.framerate = mode.refresh_rate; |
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59 } |
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60 |
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61 static void |
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62 finish_cursors(void) |
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63 { |
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64 for (size_t i = 0; i < UTIL_SIZE(cursors); ++i) |
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65 if (cursors[i]) |
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66 SDL_FreeCursor(cursors[i]); |
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67 } |
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68 |
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69 static int |
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70 load_window(const char *title, unsigned int w, unsigned int h) |
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71 { |
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72 return (handle.win = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, 0)) != NULL; |
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73 } |
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74 |
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75 static int |
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76 load_renderer(void) |
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77 { |
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78 return (handle.renderer = SDL_CreateRenderer(handle.win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC)) != NULL; |
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79 } |
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80 |
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81 int |
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82 window_open(const char *title, unsigned int w, unsigned int h) |
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83 { |
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84 assert(title); |
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85 |
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86 if (!load_window(title, w, h) || !load_renderer()) |
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87 return errorf("%s", SDL_GetError()); |
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88 |
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89 window.w = w; |
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90 window.h = h; |
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91 |
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92 load_framerate(); |
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93 load_cursors(); |
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94 |
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95 return 0; |
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96 } |
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97 |
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98 void |
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99 window_set_cursor(enum window_cursor cursor) |
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100 { |
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101 assert(cursor < WINDOW_CURSOR_LAST); |
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102 |
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103 SDL_SetCursor(cursors[cursor]); |
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104 } |
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105 |
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106 void |
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107 window_finish(void) |
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108 { |
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109 if (handle.renderer) |
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110 SDL_DestroyRenderer(handle.renderer); |
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111 if (handle.win) |
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112 SDL_DestroyWindow(handle.win); |
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113 |
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114 finish_cursors(); |
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115 |
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116 memset(&handle, 0, sizeof (handle)); |
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117 } |