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annotate librpg/rpg/message.c @ 153:aa6e70e330a1

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ui: make label less smart It should not contain alignment because it should be handled by the user tself.
author David Demelier <markand@malikania.fr>
date Thu, 15 Oct 2020 18:45:27 +0200
parents 9733d379be89
children fb306ed990f8
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1 /*
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2 * message.c -- message dialog
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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 <assert.h>
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20 #include <stdlib.h>
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21 #include <string.h>
24
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22
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23 #include <core/action.h>
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24 #include <core/event.h>
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25 #include <core/font.h>
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26 #include <core/maths.h>
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27 #include <core/painter.h>
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28 #include <core/panic.h>
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29 #include <core/sprite.h>
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30 #include <core/trace.h>
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31 #include <core/util.h>
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32
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33 #include <ui/align.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
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38 #include "message.h"
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39
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40 #define THEME(msg) (msg->theme ? msg->theme : theme_default())
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41
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42 static void
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43 handle(struct action *action, const union event *ev)
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44 {
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45 assert(action);
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46 assert(ev);
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47
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48 message_handle(action->data, ev);
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49 }
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50
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51 static bool
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52 update(struct action *action, unsigned int ticks)
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53 {
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54 assert(action);
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55
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56 return message_update(action->data, ticks);
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57 }
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58
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59 static void
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60 draw(struct action *action)
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61 {
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62 assert(action);
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63
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64 message_draw(action->data);
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65 }
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66
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67 static void
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68 draw_frame(const struct message *msg)
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69 {
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70 assert(msg);
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71
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72 struct frame frame = {
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73 .w = msg->w,
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74 .h = msg->h,
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75 .theme = msg->theme
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76 };
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77
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78 frame_draw(&frame);
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79 }
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80
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81 static void
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82 draw_lines(const struct message *msg)
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83 {
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84 struct theme theme;
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85 unsigned int lineh;
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86
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87 /* Shallow copy theme to modify colors. */
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88 theme_shallow(&theme, msg->theme);
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89
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90 /* Compute text size for list alignment. */
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91 lineh = font_height(theme.fonts[THEME_FONT_INTERFACE]);
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92
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93 for (int i = 0; i < 6; ++i) {
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94 if (!msg->text[i])
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95 continue;
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96
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97 struct label label = {
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98 .y = i * lineh,
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99 .w = msg->w,
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100 .h = msg->h,
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101 .theme = &theme,
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102 .text = msg->text[i],
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103 .flags = LABEL_FLAGS_SHADOW
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104 };
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105
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106 /*
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107 * The function label_draw will use THEME_COLOR_NORMAL to draw
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108 * text and THEME_COLOR_SHADOW so if we have selected a line
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109 * we need to cheat the normal color.
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110 */
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111 if (msg->flags & MESSAGE_FLAGS_QUESTION && msg->index == (unsigned int)i)
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112 theme.colors[THEME_COLOR_NORMAL] = THEME(msg)->colors[THEME_COLOR_SELECTED];
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113 else
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114 theme.colors[THEME_COLOR_NORMAL] = THEME(msg)->colors[THEME_COLOR_NORMAL];
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115
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116 label_draw(&label);
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117 }
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118 }
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119
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120 void
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121 message_start(struct message *msg)
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122 {
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123 assert(msg);
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124
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125 if (msg->flags & (MESSAGE_FLAGS_FADEIN|MESSAGE_FLAGS_FADEOUT))
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126 assert(msg->delay > 0);
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127
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128 msg->elapsed = 0;
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129 msg->scale = msg->flags & MESSAGE_FLAGS_FADEIN ? 0.0 : 1.0;
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130 msg->state = msg->flags & MESSAGE_FLAGS_FADEIN
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131 ? MESSAGE_STATE_OPENING
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132 : MESSAGE_STATE_SHOWING;
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133
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134 if (msg->flags & MESSAGE_FLAGS_AUTOMATIC && msg->timeout == 0)
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135 trace("message is automatic but has zero timeout");
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136 }
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137
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138 void
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139 message_handle(struct message *msg, const union event *ev)
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diff changeset
140 {
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diff changeset
141 assert(msg);
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diff changeset
142 assert(ev);
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diff changeset
143
100
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144 /* Skip if the message animation hasn't complete. */
140
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145 if (msg->state != MESSAGE_STATE_SHOWING)
100
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diff changeset
146 return;
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147
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diff changeset
148 /* Only keyboard event are valid. */
140
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diff changeset
149 if (ev->type != EVENT_KEYDOWN || msg->state == MESSAGE_STATE_NONE)
64
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diff changeset
150 return;
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151
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diff changeset
152 switch (ev->key.key) {
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diff changeset
153 case KEY_UP:
da9b7462ab92 core: implement question, closes #2464 @2h
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diff changeset
154 if (msg->index > 0)
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diff changeset
155 msg->index--;
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156 break;
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157 case KEY_DOWN:
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158 if (msg->index < 5 && msg->text[msg->index + 1])
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diff changeset
159 msg->index++;
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160 break;
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161 case KEY_ENTER:
140
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162 msg->state = msg->flags & MESSAGE_FLAGS_FADEOUT
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163 ? MESSAGE_STATE_HIDING
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164 : MESSAGE_STATE_NONE;
64
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165 msg->elapsed = 0;
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diff changeset
166 break;
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167 default:
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168 break;
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169 }
24
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170 }
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171
60
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172 bool
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173 message_update(struct message *msg, unsigned int ticks)
24
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174 {
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175 assert(msg);
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176
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177 msg->elapsed += ticks;
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178
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179 switch (msg->state) {
140
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180 case MESSAGE_STATE_OPENING:
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181 msg->scale = (double)msg->elapsed / (double)msg->delay;
100
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182
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183 if (msg->scale > 1)
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184 msg->scale = 1;
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185
140
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186 if (msg->elapsed >= msg->delay) {
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187 msg->state = MESSAGE_STATE_SHOWING;
62
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188 msg->elapsed = 0;
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189 }
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190
24
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191 break;
140
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192 case MESSAGE_STATE_SHOWING:
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193 /* Do automatically switch state if requested by the user. */
140
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194 if (msg->flags & MESSAGE_FLAGS_AUTOMATIC && msg->elapsed >= msg->timeout) {
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195 msg->state = msg->flags & MESSAGE_FLAGS_FADEOUT
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196 ? MESSAGE_STATE_HIDING
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197 : MESSAGE_STATE_NONE;
62
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198 msg->elapsed = 0;
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199 }
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200
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201 break;
140
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202 case MESSAGE_STATE_HIDING:
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203 msg->scale = 1 - (double)msg->elapsed / (double)msg->delay;
100
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204
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205 if (msg->scale < 0)
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206 msg->scale = 0;
140
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207 if (msg->elapsed >= msg->delay) {
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208 msg->state = MESSAGE_STATE_NONE;
62
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209 msg->elapsed = 0;
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diff changeset
210 }
24
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211
4a06503641eb core: start basic implementation of dialog, continue #2449 @2h
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212 break;
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213 default:
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214 break;
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215 }
60
7266c750b649 core: simplify message
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216
140
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217 return msg->state == MESSAGE_STATE_NONE;
99
4ac71ac10c9f core: start adding some UI elements
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diff changeset
218 }
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219
24
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220 void
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221 message_draw(struct message *msg)
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222 {
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223 assert(msg);
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224
100
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225 struct texture tex;
140
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226 int x, y;
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227 unsigned int w, h;
100
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228
140
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229 if (!texture_new(&tex, msg->w, msg->h))
100
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diff changeset
230 panic();
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231
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232 PAINTER_BEGIN(&tex);
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233 draw_frame(msg);
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234 draw_lines(msg);
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235 PAINTER_END();
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diff changeset
236
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diff changeset
237 /* Compute scaling. */
140
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238 w = msg->w * msg->scale;
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diff changeset
239 h = msg->h * msg->scale;
100
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diff changeset
240
140
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diff changeset
241 /* Centerize within its drawing area. */
150
9733d379be89 ui: add a standalone align() function
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parents: 148
diff changeset
242 align(ALIGN_CENTER, &x, &y, w, h, msg->x, msg->y, msg->w, msg->h);
100
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diff changeset
243
140
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diff changeset
244 /* Draw and clear. */
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diff changeset
245 texture_scale(&tex, 0, 0, msg->w, msg->h, x, y, w, h, 0);
100
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diff changeset
246 texture_finish(&tex);
24
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diff changeset
247 }
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248
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diff changeset
249 void
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250 message_hide(struct message *msg)
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parents:
diff changeset
251 {
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diff changeset
252 assert(msg);
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parents:
diff changeset
253
140
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diff changeset
254 msg->state = MESSAGE_STATE_HIDING;
24
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255 msg->elapsed = 0;
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diff changeset
256 }
62
d07acc6ee4d9 core: improve message
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diff changeset
257
d07acc6ee4d9 core: improve message
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diff changeset
258 void
136
30b68089ae70 core: rework actions and a bit of drawables, closes #2492
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parents: 135
diff changeset
259 message_action(struct message *msg, struct action *action)
67
7187c0d9b9c0 core: implement message action, closes #2467
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diff changeset
260 {
7187c0d9b9c0 core: implement message action, closes #2467
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diff changeset
261 assert(msg);
7187c0d9b9c0 core: implement message action, closes #2467
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diff changeset
262 assert(action);
7187c0d9b9c0 core: implement message action, closes #2467
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diff changeset
263
7187c0d9b9c0 core: implement message action, closes #2467
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diff changeset
264 memset(action, 0, sizeof (struct action));
136
30b68089ae70 core: rework actions and a bit of drawables, closes #2492
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parents: 135
diff changeset
265 action->data = msg;
30b68089ae70 core: rework actions and a bit of drawables, closes #2492
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parents: 135
diff changeset
266 action->handle = handle;
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parents: 135
diff changeset
267 action->update = update;
30b68089ae70 core: rework actions and a bit of drawables, closes #2492
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parents: 135
diff changeset
268 action->draw = draw;
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parents: 135
diff changeset
269
30b68089ae70 core: rework actions and a bit of drawables, closes #2492
David Demelier <markand@malikania.fr>
parents: 135
diff changeset
270 message_start(msg);
67
7187c0d9b9c0 core: implement message action, closes #2467
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parents: 65
diff changeset
271 }