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annotate examples/example-message.c @ 174:6992085d47fd

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ui: major theme overhaul, closes #2509 @1h - The font does not contain a color anymore, - Add a new color argument to font_render, - Theme are stored `const` in UI elements to promise no modifications, - Also make all <ui>_draw function to take a const widget too.
author David Demelier <markand@malikania.fr>
date Thu, 22 Oct 2020 15:16:43 +0200
parents e05a792f6910
children 133926e08d6e
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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 * 0.120)
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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(const 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 .spacing = 12,
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116 .text = {
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117 "This is a basic message.",
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118 "Vertical spacing is automatically computed.",
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119 "You need to press <Enter> to close it.",
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120 },
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121 };
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122
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123 message_query(&msg, NULL, &msg.h);
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124 run(&msg);
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125 }
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126
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127 static void
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128 automatic(void)
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129 {
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130 struct message msg = {
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131 .x = MX,
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132 .y = MY,
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133 .w = MW,
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134 .timeout = MESSAGE_TIMEOUT_DEFAULT,
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135 .text = {
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136 "This is a an automatic message.",
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137 "It will disappear in a few seconds.",
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138 "You can still press <Enter> to close it quicker."
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139 },
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140 .flags = MESSAGE_FLAGS_AUTOMATIC
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141 };
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142
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143 message_query(&msg, NULL, &msg.h);
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144 run(&msg);
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145 }
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146
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147 static void
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148 fadein(void)
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149 {
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150 struct message msg = {
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151 .x = MX,
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152 .y = MY,
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153 .w = MW,
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154 .delay = MESSAGE_DELAY_DEFAULT,
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155 .text = {
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156 "This message will fade in."
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157 },
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158 .flags = MESSAGE_FLAGS_FADEIN
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159 };
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160
159
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161 message_query(&msg, NULL, &msg.h);
140
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162 run(&msg);
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163 }
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164
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165 static void
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166 fadeout(void)
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167 {
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168 struct message msg = {
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169 .x = MX,
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170 .y = MY,
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171 .w = MW,
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172 .delay = MESSAGE_DELAY_DEFAULT,
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173 .text = {
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174 "This message will fade out."
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175 },
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176 .flags = MESSAGE_FLAGS_FADEOUT
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177 };
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178
159
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179 message_query(&msg, NULL, &msg.h);
140
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180 run(&msg);
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181 }
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182
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183 static void
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184 fade(void)
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185 {
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186 struct message msg = {
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187 .x = MX,
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188 .y = MY,
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189 .w = MW,
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190 .delay = MESSAGE_DELAY_DEFAULT,
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191 .text = {
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192 "This message will fade in and out."
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193 },
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194 .flags = MESSAGE_FLAGS_FADEIN | MESSAGE_FLAGS_FADEOUT
99
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195 };
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196
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197 message_query(&msg, NULL, &msg.h);
99
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198 run(&msg);
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199 }
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200
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201 static void
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202 question(void)
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203 {
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204 struct message msg = {
140
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205 .x = MX,
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206 .y = MY,
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207 .w = MW,
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208 .text = {
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209 "Okay, I've understood.",
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210 "Nevermind, I'll do it again."
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211 },
140
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212 .flags = MESSAGE_FLAGS_QUESTION
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213 };
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214
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215 message_query(&msg, NULL, &msg.h);
140
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216 run(&msg);
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217 }
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218
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219 static void
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220 smallbottom(void)
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221 {
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222 const unsigned int w = window.w / 4;
157
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223 const unsigned int h = MH;
140
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224 const int x = (window.w / 2) - (w / 2);
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225 const int y = (window.h - h - 10);
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226
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227 struct message msg = {
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228 .x = x,
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229 .y = y,
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230 .w = w,
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231 .h = h,
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232 .delay = MESSAGE_DELAY_DEFAULT,
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233 .flags = MESSAGE_FLAGS_FADEIN | MESSAGE_FLAGS_FADEOUT,
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234 .text = {
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235 "This one is small here."
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236 }
99
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237 };
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238
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239 run(&msg);
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240 }
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241
140
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242 static void
157
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243 toosmallh(void)
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244 {
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245 struct message msg = {
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246 .x = MX,
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247 .y = MY,
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248 .w = MW,
159
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249 .h = 40,
157
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250 .text = {
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251 "This one is too small in height and will emit a warning.",
159
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252 "Because this line will be incomplete."
157
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253 },
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254 };
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255
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256 run(&msg);
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257 }
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258
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diff changeset
259 static void
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260 toosmallw(void)
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261 {
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diff changeset
262 struct message msg = {
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diff changeset
263 .x = MX,
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264 .y = MY,
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diff changeset
265 .w = 160,
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266 .h = MH,
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267 .text = {
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268 "This one is too small in width."
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269 },
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270 };
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271
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272 run(&msg);
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273 }
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274
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diff changeset
275 static void
140
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276 custom(void)
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277 {
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278 struct theme theme;
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279 struct message msg = {
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280 .x = MX,
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281 .y = MY,
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282 .w = MW,
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283 .h = MH,
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284 .text = {
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285 "This one will destroy your eyes.",
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286 "Because it use a terrible custom theme."
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287 },
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288 .theme = &theme
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289 };
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290
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291 /* Borrow default theme and change its frame drawing. */
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292 memcpy(&theme, theme_default(), sizeof (theme));
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293 theme.draw_frame = my_draw_frame;
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diff changeset
294 theme.colors[THEME_COLOR_NORMAL] = 0x0000ffff;
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295
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296 run(&msg);
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297 }
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298
99
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299 int
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300 main(int argc, char **argv)
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301 {
135
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302 (void)argc;
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303 (void)argv;
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304
99
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305 init();
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306 basic();
140
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307 fadein();
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308 fadeout();
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309 fade();
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4ac71ac10c9f core: start adding some UI elements
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310 automatic();
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311 question();
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312 smallbottom();
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fb306ed990f8 ui: make message more flexible, closes #2501
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313 toosmallh();
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314 toosmallw();
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315 custom();
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316 quit();
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317 }