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annotate examples/example-ui/main.c @ 314:d01e83210ca2

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misc: update years
author David Demelier <markand@malikania.fr>
date Wed, 22 Sep 2021 07:22:20 +0200
parents 3638b39ef2bf
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * example-action.c -- example on how to use automatic actions
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3 *
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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 <core/action.h>
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20 #include <core/core.h>
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21 #include <core/event.h>
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22 #include <core/game.h>
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23 #include <core/maths.h>
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24 #include <core/panic.h>
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25 #include <core/painter.h>
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26 #include <core/state.h>
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27 #include <core/sys.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/align.h>
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32 #include <ui/button.h>
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33 #include <ui/checkbox.h>
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34 #include <ui/frame.h>
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35 #include <ui/label.h>
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36 #include <ui/theme.h>
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37 #include <ui/ui.h>
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38
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39 #define W (1280)
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40 #define H (720)
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41
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42 #define FRAME_ORIGIN_X (10)
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43 #define FRAME_ORIGIN_Y (10)
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44 #define FRAME_WIDTH (400)
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45 #define FRAME_HEIGHT (200)
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46
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47 #define HEADER_HEIGHT (32)
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48
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49 #define ELEMENT_HEIGHT (20)
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50
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51 /*
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52 * We design a basic UI like this.
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53 *
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54 * FRAME_WIDTH
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55 * +---------------------------------------------+--
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56 * | Title | | HEADER_HEIGHT
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57 * +---------------------------------------------+--
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58 * | [x] Auto save |
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59 * | |
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60 * | |
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61 * | [ Quit ] |
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62 * +---------------------------------------------+
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63 */
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64 static struct {
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65 struct action_stack st;
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66
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67 struct {
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68 int active;
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69 int x;
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70 int y;
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71 } motion;
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72
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73 struct {
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74 struct frame frame;
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75 struct action act;
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76 } panel;
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77
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78 struct {
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79 struct label label;
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80 struct action act;
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81 } header;
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82
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83 struct {
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84 struct checkbox cb;
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85 struct action cb_act;
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86 struct label label;
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87 struct action label_act;
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88 } autosave;
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89
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90 struct {
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91 struct button button;
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92 struct action act;
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93 } quit;
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94 } ui = {
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95 .panel = {
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96 .frame = {
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97 .x = FRAME_ORIGIN_X,
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98 .y = FRAME_ORIGIN_Y,
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99 .w = FRAME_WIDTH,
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100 .h = FRAME_HEIGHT
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101 }
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102 },
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103 .header = {
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104 .label = {
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105 .text = "Preferences",
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106 .x = FRAME_ORIGIN_X,
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107 .y = FRAME_ORIGIN_Y,
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108 .flags = LABEL_FLAGS_SHADOW,
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109 }
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110 },
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111 .autosave = {
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112 .cb = {
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113 .w = ELEMENT_HEIGHT,
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114 .h = ELEMENT_HEIGHT
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115 },
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116 .label = {
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117 .text = "Auto save game",
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118 .flags = LABEL_FLAGS_SHADOW,
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119 }
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120 },
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121 .quit = {
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122 .button = {
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123 .text = "Quit",
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124 .h = ELEMENT_HEIGHT
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125 }
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126 }
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127 };
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128
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129 static void
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130 init(void)
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131 {
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132 if (core_init("fr.malikania", "ui") < 0 || ui_init() < 0)
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133 panic();
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134 if (window_open("Example - UI", W, H) < 0)
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135 panic();
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136 }
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137
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138 static void
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139 resize_header(void)
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140 {
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141 struct frame *f = &ui.panel.frame;
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142 struct label *l = &ui.header.label;
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143 unsigned int w, h;
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144
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145 /* Header. */
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146 label_query(l, &w, &h);
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147 align(ALIGN_LEFT, &l->x, &l->y, w, h, f->x, f->y, f->w, HEADER_HEIGHT);
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148
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149 l->x += theme_default()->padding;
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150 }
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151
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152 static void
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153 resize_autosave(void)
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154 {
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155 unsigned int padding = theme_default()->padding;
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156 struct frame *f = &ui.panel.frame;
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157 struct checkbox *c = &ui.autosave.cb;
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158 struct label *l = &ui.autosave.label;
152
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159
153
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160 c->x = f->x + padding;
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161 c->y = f->y + HEADER_HEIGHT + padding;
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162
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163 l->x = c->x + c->w + padding;
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164 l->y = c->y;
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165 }
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166
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167 static void
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168 resize_button(void)
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169 {
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170 unsigned int padding = theme_default()->padding;
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171 struct frame *f = &ui.panel.frame;
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172 struct button *b = &ui.quit.button;
152
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173
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174 /* Button. */
153
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175 b->w = f->w / 4;
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176
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177 align(ALIGN_BOTTOM_RIGHT, &b->x, &b->y, b->w, b->h,
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178 f->x, f->y, f->w, f->h);
152
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179
153
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180 b->x -= padding;
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181 b->y -= padding;
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182 }
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183
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184 static void
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185 resize(void)
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186 {
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187 resize_header();
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188 resize_autosave();
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189 resize_button();
152
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190 }
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191
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192 static void
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193 prepare(void)
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194 {
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195 /* Frame. */
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196 frame_action(&ui.panel.frame, &ui.panel.act);
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197
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198 /* Header title. */
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199 label_action(&ui.header.label, &ui.header.act);
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200
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201 /* Button quit. */
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202 button_action(&ui.quit.button, &ui.quit.act);
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203
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204 /* Autosave. */
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205 checkbox_action(&ui.autosave.cb, &ui.autosave.cb_act);
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206 label_action(&ui.autosave.label, &ui.autosave.label_act);
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207
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208 /* Add all UI elements. */
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209 action_stack_add(&ui.st, &ui.panel.act);
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210 action_stack_add(&ui.st, &ui.header.act);
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211 action_stack_add(&ui.st, &ui.autosave.cb_act);
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212 action_stack_add(&ui.st, &ui.autosave.label_act);
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213 action_stack_add(&ui.st, &ui.quit.act);
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214 }
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215
298
196264679079 misc: remove usage of bool
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216 static int
152
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217 headerclick(int x, int y)
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218 {
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diff changeset
219 return maths_is_boxed(
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220 ui.panel.frame.x,
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221 ui.panel.frame.y,
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222 ui.panel.frame.w,
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223 HEADER_HEIGHT,
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224 x,
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225 y
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226 );
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227 }
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228
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229 static void
207
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diff changeset
230 handle(struct state *st, const union event *ev)
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231 {
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232 (void)st;
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233
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234 switch (ev->type) {
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235 case EVENT_QUIT:
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236 game_quit();
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237 break;
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238 case EVENT_MOUSE:
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239 if (ui.motion.active) {
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240 ui.panel.frame.x += ev->mouse.x - ui.motion.x;
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241 ui.panel.frame.y += ev->mouse.y - ui.motion.y;
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242 ui.motion.x = ev->mouse.x;
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243 ui.motion.y = ev->mouse.y;
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244 resize();
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245 }
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246 break;
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247 case EVENT_CLICKDOWN:
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248 if (headerclick(ev->click.x, ev->click.y)) {
298
196264679079 misc: remove usage of bool
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diff changeset
249 ui.motion.active = 1;
207
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diff changeset
250 ui.motion.x = ev->click.x;
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251 ui.motion.y = ev->click.y;
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diff changeset
252 window_set_cursor(WINDOW_CURSOR_SIZE);
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diff changeset
253 }
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diff changeset
254 else
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255 action_stack_handle(&ui.st, ev);
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256 break;
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diff changeset
257 case EVENT_CLICKUP:
298
196264679079 misc: remove usage of bool
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diff changeset
258 ui.motion.active = 0;
207
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diff changeset
259 window_set_cursor(WINDOW_CURSOR_ARROW);
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diff changeset
260 /* Fallthrough. */
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261 default:
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diff changeset
262 action_stack_handle(&ui.st, ev);
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diff changeset
263 break;
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diff changeset
264 }
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265 }
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266
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diff changeset
267 static void
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diff changeset
268 update(struct state *st, unsigned int ticks)
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diff changeset
269 {
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diff changeset
270 (void)st;
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271
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diff changeset
272 if (ui.quit.button.state == BUTTON_STATE_ACTIVATED)
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diff changeset
273 game_quit();
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274 else
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275 action_stack_update(&ui.st, ticks);
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276 }
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277
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diff changeset
278 static void
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279 draw(struct state *st)
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diff changeset
280 {
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diff changeset
281 (void)st;
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282
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diff changeset
283 painter_set_color(0xffffffff);
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diff changeset
284 painter_clear();
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diff changeset
285 action_stack_draw(&ui.st);
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diff changeset
286 painter_present();
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diff changeset
287 }
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288
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diff changeset
289 static void
151
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290 run(void)
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291 {
207
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diff changeset
292 struct state state = {
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diff changeset
293 .handle = handle,
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diff changeset
294 .update = update,
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295 .draw = draw
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diff changeset
296 };
151
b19d076856d2 ui: cleanup theme module, closes #2498
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parents:
diff changeset
297
152
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diff changeset
298 prepare();
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diff changeset
299 resize();
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diff changeset
300
300
3638b39ef2bf examples: fix with new game_push function
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diff changeset
301 game_push(&state);
207
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diff changeset
302 game_loop();
151
b19d076856d2 ui: cleanup theme module, closes #2498
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parents:
diff changeset
303 }
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304
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305 static void
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306 quit(void)
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307 {
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308 window_finish();
156
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309 ui_finish();
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310 core_finish();
151
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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 run();
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321 quit();
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322
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323 return 0;
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324 }