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annotate examples/example-label.c @ 150:9733d379be89

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ui: add a standalone align() function
author David Demelier <markand@malikania.fr>
date Thu, 15 Oct 2020 13:13:38 +0200
parents a43e79d489ea
children aa6e70e330a1
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David Demelier <markand@malikania.fr>
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1 /*
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2 * example-label.c -- show how to use label and alignments
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3 *
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4 * Copyright (c) 2020 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/clock.h>
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20 #include <core/event.h>
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21 #include <core/painter.h>
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22 #include <core/panic.h>
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23 #include <core/sys.h>
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24 #include <core/util.h>
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25 #include <core/window.h>
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26
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27 #include <ui/label.h>
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28 #include <ui/theme.h>
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29
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30 #define W (1280)
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31 #define H (720)
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32
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33 static void
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34 init(void)
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35 {
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36 if (!sys_init() ||
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37 !window_init("Example - Label", W, H) ||
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38 !theme_init())
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39 panic();
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40 }
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41
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42 static void
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43 quit(void)
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44 {
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45 theme_finish();
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46 window_finish();
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47 sys_finish();
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48 }
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49
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50 static void
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51 run(void)
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52 {
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53 struct clock clock = {0};
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54 struct label labels[] = {
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55 {
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56 .x = 0,
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57 .y = 0,
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58 .w = W,
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59 .h = H,
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60 .text = "Top left",
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61 .align = ALIGN_TOP_LEFT
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62 },
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63 {
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64 .x = 0,
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65 .y = 0,
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66 .w = W,
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67 .h = H,
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68 .text = "Top",
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69 .align = ALIGN_TOP
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70 },
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71 {
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72 .x = 0,
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73 .y = 0,
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74 .w = W,
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75 .h = H,
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76 .text = "Top right",
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77 .align = ALIGN_TOP_RIGHT
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78 },
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79 {
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80 .x = 0,
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81 .y = 0,
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82 .w = W,
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83 .h = H,
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84 .text = "Right",
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85 .align = ALIGN_RIGHT
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86 },
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87 {
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88 .x = 0,
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89 .y = 0,
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90 .w = W,
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91 .h = H,
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92 .text = "Bottom right",
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93 .align = ALIGN_BOTTOM_RIGHT
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94 },
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95 {
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96 .x = 0,
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97 .y = 0,
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98 .w = W,
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99 .h = H,
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100 .text = "Bottom",
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101 .align = ALIGN_BOTTOM
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102 },
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103 {
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104 .x = 0,
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105 .y = 0,
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106 .w = W,
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107 .h = H,
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108 .text = "Bottom left",
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109 .align = ALIGN_BOTTOM_LEFT
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110 },
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111 {
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112 .x = 0,
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113 .y = 0,
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114 .w = W,
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115 .h = H,
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116 .text = "Left",
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117 .align = ALIGN_LEFT
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118 },
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119 {
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120 .x = 0,
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121 .y = 0,
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122 .w = W,
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123 .h = H,
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124 .text = "The world is Malikania.",
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125 .flags = LABEL_FLAGS_SHADOW,
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126 .align = ALIGN_CENTER
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127 },
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128 };
149
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129 struct label mlabel = {
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130 .text = "This one follows your mouse and is not aligned."
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131 };
145
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132
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133 clock_start(&clock);
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134
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135 for (;;) {
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136 union event ev;
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137 unsigned int elapsed = clock_elapsed(&clock);
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138
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139 clock_start(&clock);
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140
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141 while (event_poll(&ev)) {
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142 switch (ev.type) {
149
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143 case EVENT_MOUSE:
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144 mlabel.x = ev.mouse.x;
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parents: 148
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145 mlabel.y = ev.mouse.y;
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146 break;
145
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147 case EVENT_QUIT:
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148 return;
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149 default:
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150 break;
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151 }
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152 }
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153
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154 painter_set_color(0x4f8fbaff);
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parents:
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155 painter_clear();
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156
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157 for (size_t i = 0; i < NELEM(labels); ++i)
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158 label_draw(&labels[i]);
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parents:
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159
149
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160 label_draw(&mlabel);
145
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161 painter_present();
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162
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163 if ((elapsed = clock_elapsed(&clock)) < 20)
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164 delay(20 - elapsed);
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165 }
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parents:
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166 }
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parents:
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167
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parents:
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168 int
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169 main(int argc, char **argv)
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David Demelier <markand@malikania.fr>
parents:
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170 {
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171 (void)argc;
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parents:
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172 (void)argv;
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173
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174 init();
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David Demelier <markand@malikania.fr>
parents:
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175 run();
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David Demelier <markand@malikania.fr>
parents:
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176 quit();
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David Demelier <markand@malikania.fr>
parents:
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177 }
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David Demelier <markand@malikania.fr>
parents:
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178