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annotate examples/example-message.c @ 157:fb306ed990f8

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ui: make message more flexible, closes #2501
author David Demelier <markand@malikania.fr>
date Fri, 16 Oct 2020 14:32:22 +0200
parents c3a40062acc2
children e8d2740703df
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1 /*
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2 * example-message.c -- show how to use messages
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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 <string.h>
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20
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21 #include <core/clock.h>
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22 #include <core/core.h>
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23 #include <core/event.h>
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24 #include <core/painter.h>
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25 #include <core/panic.h>
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26 #include <core/sys.h>
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27 #include <core/util.h>
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28 #include <core/window.h>
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29
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30 #include <ui/frame.h>
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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 #include <rpg/message.h>
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35 #include <rpg/rpg.h>
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36
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37 #define W (1280)
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38 #define H (720)
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39
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40 #define MW (W * 0.75)
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41 #define MH (H * 0.130)
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42 #define MX ((W / 2) - (MW / 2))
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43 #define MY (100)
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44
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45 static void
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46 init(void)
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47 {
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48 if (!core_init() || !ui_init() || !rpg_init())
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49 panic();
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50 if (!window_open("Example - Message", W, H))
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51 panic();
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52 }
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53
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54 static void
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55 quit(void)
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56 {
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57 window_finish();
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58 rpg_finish();
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59 ui_finish();
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60 core_finish();
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61 }
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62
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63 static void
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64 run(struct message *msg)
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65 {
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66 struct clock clock = {0};
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67
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68 message_start(msg);
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69 clock_start(&clock);
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70
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71 while (msg->state) {
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72 union event ev;
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73 unsigned int elapsed = clock_elapsed(&clock);
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74
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75 clock_start(&clock);
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76
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77 while (event_poll(&ev)) {
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78 switch (ev.type) {
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79 case EVENT_QUIT:
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80 msg->state = MESSAGE_STATE_NONE;
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81 break;
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82 default:
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83 message_handle(msg, &ev);
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84 break;
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85 }
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86 }
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87
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88 message_update(msg, elapsed);
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89 painter_set_color(0xffffffff);
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90 painter_clear();
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91 message_draw(msg);
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92 painter_present();
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93
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94 if ((elapsed = clock_elapsed(&clock)) < 20)
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95 delay(20 - elapsed);
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96 }
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97 }
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98
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99 static void
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100 my_draw_frame(struct theme *th, const struct frame *f)
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101 {
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102 (void)th;
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103
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104 painter_set_color(0xff0000ff);
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105 painter_draw_rectangle(f->x, f->y, f->w, f->h);
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106 }
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107
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108 static void
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109 basic(void)
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110 {
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111 struct message msg = {
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112 .x = MX,
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113 .y = MY,
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114 .w = MW,
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115 .h = MH,
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116 .text = {
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117 "This is a basic message.",
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118 "You need to press <Enter> to close it."
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119 },
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120 };
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121
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122 run(&msg);
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123 }
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124
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125 static void
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126 automatic(void)
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127 {
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128 struct message msg = {
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129 .x = MX,
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130 .y = MY,
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131 .w = MW,
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132 .h = MH,
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133 .timeout = MESSAGE_TIMEOUT_DEFAULT,
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134 .text = {
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135 "This is a an automatic message.",
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136 "It will disappear in a few seconds.",
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137 "You can still press <Enter> to close it quicker."
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138 },
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139 .flags = MESSAGE_FLAGS_AUTOMATIC
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140 };
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141
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142 run(&msg);
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143 }
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144
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145 static void
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146 fadein(void)
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147 {
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148 struct message msg = {
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149 .x = MX,
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150 .y = MY,
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151 .w = MW,
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152 .h = MH,
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153 .delay = MESSAGE_DELAY_DEFAULT,
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154 .text = {
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155 "This message will fade in."
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156 },
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157 .flags = MESSAGE_FLAGS_FADEIN
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158 };
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159
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160 run(&msg);
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161 }
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162
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163 static void
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164 fadeout(void)
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165 {
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166 struct message msg = {
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167 .x = MX,
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168 .y = MY,
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169 .w = MW,
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170 .h = MH,
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171 .delay = MESSAGE_DELAY_DEFAULT,
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172 .text = {
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173 "This message will fade out."
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174 },
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175 .flags = MESSAGE_FLAGS_FADEOUT
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176 };
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177
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178 run(&msg);
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179 }
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180
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181 static void
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182 fade(void)
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183 {
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184 struct message msg = {
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185 .x = MX,
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186 .y = MY,
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187 .w = MW,
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188 .h = MH,
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189 .delay = MESSAGE_DELAY_DEFAULT,
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190 .text = {
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191 "This message will fade in and out."
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192 },
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193 .flags = MESSAGE_FLAGS_FADEIN | MESSAGE_FLAGS_FADEOUT
99
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194 };
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195
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196 run(&msg);
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197 }
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198
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199 static void
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200 question(void)
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201 {
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202 struct message msg = {
140
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203 .x = MX,
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204 .y = MY,
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205 .w = MW,
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206 .h = MH,
99
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207 .text = {
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208 "Okay, I've understood.",
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209 "Nevermind, I'll do it again."
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210 },
140
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211 .flags = MESSAGE_FLAGS_QUESTION
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212 };
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213
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214 run(&msg);
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215 }
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216
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217 static void
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218 smallbottom(void)
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219 {
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220 const unsigned int w = window.w / 4;
157
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221 const unsigned int h = MH;
140
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222 const int x = (window.w / 2) - (w / 2);
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223 const int y = (window.h - h - 10);
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224
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225 struct message msg = {
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226 .x = x,
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227 .y = y,
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228 .w = w,
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229 .h = h,
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230 .delay = MESSAGE_DELAY_DEFAULT,
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231 .flags = MESSAGE_FLAGS_FADEIN | MESSAGE_FLAGS_FADEOUT,
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232 .text = {
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233 "This one is small here."
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234 }
99
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235 };
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236
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237 run(&msg);
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238 }
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239
140
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240 static void
157
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241 toosmallh(void)
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242 {
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243 struct message msg = {
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244 .x = MX,
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245 .y = MY,
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246 .w = MW,
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247 .h = 50,
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248 .text = {
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249 "This one is too small in height and will emit a warning.",
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250 },
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251 };
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252
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253 run(&msg);
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254 }
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255
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256 static void
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257 toosmallw(void)
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258 {
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diff changeset
259 struct message msg = {
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260 .x = MX,
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261 .y = MY,
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262 .w = 160,
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263 .h = MH,
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264 .text = {
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265 "This one is too small in width."
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266 },
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267 };
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268
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269 run(&msg);
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270 }
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271
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diff changeset
272 static void
140
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273 custom(void)
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274 {
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275 struct theme theme;
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276 struct message msg = {
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277 .x = MX,
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278 .y = MY,
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279 .w = MW,
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280 .h = MH,
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281 .text = {
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282 "This one will destroy your eyes.",
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283 "Because it use a terrible custom theme."
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284 },
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285 .theme = &theme
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286 };
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287
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288 /* Borrow default theme and change its frame drawing. */
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289 memcpy(&theme, theme_default(), sizeof (theme));
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290 theme.draw_frame = my_draw_frame;
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291 theme.colors[THEME_COLOR_NORMAL] = 0x0000ffff;
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292
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293 run(&msg);
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294 }
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295
157
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diff changeset
296 static void
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diff changeset
297 large(void)
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diff changeset
298 {
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diff changeset
299 struct message msg = {
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diff changeset
300 .x = MX,
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diff changeset
301 .y = MY,
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diff changeset
302 .w = 500,
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diff changeset
303 .h = 500,
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diff changeset
304 .text = {
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diff changeset
305 "And this one is terribly large.",
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diff changeset
306 "But lines are still padded at top."
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diff changeset
307 },
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diff changeset
308 };
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parents: 156
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309
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310 run(&msg);
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311 }
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312
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313 int
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314 main(int argc, char **argv)
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315 {
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316 (void)argc;
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317 (void)argv;
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318
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319 init();
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320 basic();
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321 fadein();
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322 fadeout();
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323 fade();
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324 automatic();
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325 question();
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326 smallbottom();
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327 toosmallh();
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328 toosmallw();
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329 custom();
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330 large();
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331 quit();
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332 }