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annotate examples/example-font/example-font.c @ 415:a5b98db4fd87

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misc: fix .hgignore too greedy
author David Demelier <markand@malikania.fr>
date Sun, 09 Oct 2022 13:53:33 +0200
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children 8f59201dc76b
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415
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1 /*
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2 * example-font.c -- show how to use fonts
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3 *
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4 * Copyright (c) 2020-2022 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 <core/core.h>
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20 #include <core/event.h>
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21 #include <core/font.h>
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22 #include <core/game.h>
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23 #include <core/painter.h>
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24 #include <core/panic.h>
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25 #include <core/state.h>
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26 #include <core/sys.h>
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27 #include <core/texture.h>
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28 #include <core/util.h>
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29 #include <core/window.h>
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30
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31 #include <ui/theme.h>
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32 #include <ui/ui.h>
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33
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34 #define W (1280)
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35 #define H (720)
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36
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37 /* Friendly taken from: https://lospec.com/palette-list/apollo */
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38 static const unsigned long colors[] = {
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39 0x3c5e8bff, /* Blue. */
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40 0x468232ff, /* Green. */
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41 0xad7757ff, /* Light brown. */
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42 0x884b2bff, /* Brown. */
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43 0x752438ff, /* Red. */
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44 0x7a367bff, /* Magenta. */
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45 0x151d28ff, /* Dark */
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46 0xc7cfccff, /* Christian Grey. */
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47 };
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48
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49 static struct state *states[1];
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50 static int ci = 0;
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51 static enum font_style style = FONT_STYLE_ANTIALIASED;
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52
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53 static void
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54 init(void)
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55 {
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56 if (core_init("fr.malikania", "example-font") < 0 || ui_init() < 0)
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57 panic();
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58 if (window_open("Example - Font", W, H) < 0)
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59 panic();
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60 }
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61
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62 static void
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63 handle(struct state *st, const union event *ev)
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64 {
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65 (void)st;
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66
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67 switch (ev->type) {
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68 case EVENT_KEYDOWN:
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69 switch (ev->key.key) {
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70 case KEY_LEFT:
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71 if (ci > 0)
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72 ci--;
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73 break;
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74 case KEY_RIGHT:
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75 if ((size_t)ci < UTIL_SIZE(colors))
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76 ci++;
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77 break;
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78 case KEY_SPACE:
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79 if (style == FONT_STYLE_ANTIALIASED)
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80 style = FONT_STYLE_NONE;
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81 else
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82 style = FONT_STYLE_ANTIALIASED;
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83
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84 theme_default()->fonts[THEME_FONT_INTERFACE]->style = style;
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85 default:
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86 break;
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87 }
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88 break;
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89 case EVENT_QUIT:
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90 game_quit();
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91 break;
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92 default:
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93 break;
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94 }
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95 }
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96
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97 static void
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98 draw(struct state *st)
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99 {
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100 (void)st;
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101
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102 struct font *font = theme_default()->fonts[THEME_FONT_INTERFACE];
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103 struct texture tex;
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104
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105 painter_set_color(0xffffffff);
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106 painter_clear();
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107
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108 if (font_render(font, &tex, "Example of text. Use <Left>/<Right> to change color and <Space> to toggle antialiasing.", colors[ci]) < 0)
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109 panic();
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110
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111 texture_draw(&tex, 10, 10);
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112 painter_present();
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113 texture_finish(&tex);
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114 }
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115
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116 static void
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117 run(void)
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118 {
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119 struct state state = {
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120 .handle = handle,
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121 .draw = draw
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122 };
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123
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124 game_init(states, UTIL_SIZE(states));
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125 game_push(&state);
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126 game_loop();
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127 }
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128
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129 static void
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130 quit(void)
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131 {
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132 window_finish();
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133 ui_finish();
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134 core_finish();
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135 }
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136
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137 int
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138 main(int argc, char **argv)
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139 {
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140 (void)argc;
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141 (void)argv;
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142
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143 init();
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144 run();
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145 quit();
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146
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147 return 0;
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148 }