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annotate libmlk-rpg/mlk/rpg/message.c @ 622:ec334c61bb81

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rpg: simplify message
author David Demelier <markand@malikania.fr>
date Tue, 22 Aug 2023 22:25:34 +0200
parents ed1d3244ed57
children 3cb1860d9f11
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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) 2020-2023 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 <mlk/core/err.h>
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24 #include <mlk/core/event.h>
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25 #include <mlk/core/font.h>
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26 #include <mlk/core/maths.h>
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27 #include <mlk/core/painter.h>
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28 #include <mlk/core/panic.h>
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29 #include <mlk/core/sprite.h>
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30 #include <mlk/core/texture.h>
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31 #include <mlk/core/trace.h>
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32 #include <mlk/core/util.h>
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33
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34 #include <mlk/ui/align.h>
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35 #include <mlk/ui/ui.h>
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36 #include <mlk/ui/ui_p.h>
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37
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38 #include "message.h"
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39
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40 static inline struct mlk_message_style *
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41 get_style(struct mlk_message *msg)
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42 {
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43 return msg->style ? msg->style : mlk_message_style;
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44 }
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46 static inline struct mlk_font *
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47 get_font(struct mlk_message *msg)
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48 {
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49 return MLK__STYLE_FONT(get_style(msg)->font, MLK_UI_FONT_INTERFACE);
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50 }
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51
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52 static unsigned int
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53 min_width(struct mlk_message_style *style, struct mlk_message *msg)
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54 {
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55 struct mlk_font *font;
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56 unsigned int maxw = 0, w = 0;
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57 int err;
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58
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59 font = MLK__STYLE_FONT(style->font, MLK_UI_FONT_INTERFACE);
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60
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61 for (size_t i = 0; i < msg->linesz; ++i) {
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62 if (!msg->lines[i])
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63 continue;
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64 if ((err = mlk_font_query(font, msg->lines[i], &w, NULL)) < 0)
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65 return err;
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66 if (w > maxw)
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67 maxw = w;
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68 }
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69
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70 return (style->padding * 2) + maxw;
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71 }
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72
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73 static unsigned int
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74 min_height(struct mlk_message_style *style, struct mlk_message *msg)
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75 {
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76 assert(msg);
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77
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78 struct mlk_font *font;
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79 unsigned int lh;
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80
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81 font = MLK__STYLE_FONT(style->font, MLK_UI_FONT_INTERFACE);
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82 lh = mlk_font_height(font);
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83
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84 return (style->padding * 2) + (msg->linesz * lh) + ((msg->linesz - 1) * style->padding);
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85 }
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86
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87 static void
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88 draw_frame(struct mlk_message *msg)
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89 {
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90 struct mlk_message_style *style = get_style(msg);
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91
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92 mlk_painter_set_color(style->border);
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93 mlk_painter_draw_rectangle(0, 0, msg->w, msg->h);
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94 mlk_painter_set_color(style->background);
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95 mlk_painter_draw_rectangle(
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96 style->border_size,
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97 style->border_size,
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98 msg->w - (style->border_size * 2),
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99 msg->h - (style->border_size * 2)
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100 );
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101 }
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102
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103 static void
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104 draw_lines(struct mlk_message *msg)
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105 {
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106 struct mlk_message_style *style;
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107 struct mlk_font *font;
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108 struct mlk_texture texture;
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109 unsigned long color;
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110 int x, y;
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111
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112 style = get_style(msg);
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113 font = get_font(msg);
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114
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115 for (size_t i = 0; i < msg->linesz; ++i) {
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116 if (!msg->lines[i])
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117 continue;
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118
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119 if ((msg->flags & MLK_MESSAGE_FLAGS_QUESTION) && msg->index == i)
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120 color = style->color_selected;
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121 else
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122 color = style->color;
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123
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124 if (mlk_font_render(font, &texture, msg->lines[i], color) < 0) {
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125 mlk_tracef("unable to render message text", mlk_err());
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126 continue;
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127 }
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128
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129 x = style->padding;
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130 y = style->padding + (i * (texture.h + style->padding));
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131
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132 if (x + texture.w > msg->w)
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133 mlk_tracef("message width too small: %u < %u", msg->w, min_width(style, msg));
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134 if (y + texture.h > msg->h)
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135 mlk_tracef("message height too small: %u < %u", msg->h, min_height(style, msg));
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136
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137 mlk_texture_draw(&texture, x, y);
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138 mlk_texture_finish(&texture);
140
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diff changeset
139 }
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parents: 136
diff changeset
140 }
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parents: 136
diff changeset
141
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diff changeset
142 static int
622
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143 query(struct mlk_message_style *self,
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144 struct mlk_message *msg,
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145 unsigned int *w,
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diff changeset
146 unsigned int *h)
24
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147 {
159
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diff changeset
148 if (w)
622
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149 *w = min_width(self, msg);
159
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diff changeset
150 if (h)
622
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151 *h = min_height(self, msg);
535
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diff changeset
152
7d6a879901e0 misc: fix
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diff changeset
153 return 0;
159
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diff changeset
154 }
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parents: 158
diff changeset
155
534
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diff changeset
156 static void
622
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157 update(struct mlk_message_style *self,
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158 struct mlk_message *msg,
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159 unsigned int ticks)
64
da9b7462ab92 core: implement question, closes #2464 @2h
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diff changeset
160 {
534
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161 (void)self;
64
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diff changeset
162
534
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163 const struct mlk_message_style *style = MLK__STYLE(msg, mlk_message_style);
24
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164
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165 msg->elapsed += ticks;
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166
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167 switch (msg->state) {
534
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168 case MLK_MESSAGE_STATE_OPENING:
622
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169 msg->scale = (double)msg->elapsed / (double)style->speed;
100
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170
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171 if (msg->scale > 1)
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172 msg->scale = 1;
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173
622
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174 if (msg->elapsed >= style->speed) {
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175 msg->state = MLK_MESSAGE_STATE_SHOWING;
62
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176 msg->elapsed = 0;
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177 }
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diff changeset
178
24
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179 break;
534
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180 case MLK_MESSAGE_STATE_SHOWING:
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181 /* Do automatically switch state if requested by the user. */
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182 if (msg->flags & MLK_MESSAGE_FLAGS_AUTOMATIC && msg->elapsed >= style->timeout) {
534
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183 msg->state = msg->flags & MLK_MESSAGE_FLAGS_FADEOUT
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184 ? MLK_MESSAGE_STATE_HIDING
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185 : MLK_MESSAGE_STATE_NONE;
62
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186 msg->elapsed = 0;
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187 }
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diff changeset
188
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diff changeset
189 break;
534
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
190 case MLK_MESSAGE_STATE_HIDING:
622
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191 msg->scale = 1 - (double)msg->elapsed / (double)style->speed;
100
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diff changeset
192
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diff changeset
193 if (msg->scale < 0)
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194 msg->scale = 0;
622
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195 if (msg->elapsed >= style->speed) {
534
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196 msg->state = MLK_MESSAGE_STATE_NONE;
62
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197 msg->elapsed = 0;
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198 }
24
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199
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200 break;
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parents:
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201 default:
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202 break;
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203 }
60
7266c750b649 core: simplify message
David Demelier <markand@malikania.fr>
parents: 59
diff changeset
204
99
4ac71ac10c9f core: start adding some UI elements
David Demelier <markand@malikania.fr>
parents: 97
diff changeset
205 }
4ac71ac10c9f core: start adding some UI elements
David Demelier <markand@malikania.fr>
parents: 97
diff changeset
206
534
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
207 static void
622
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208 draw(struct mlk_message_style *self, struct mlk_message *msg)
24
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209 {
534
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210 (void)self;
24
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211
472
bc5483849614 core: texture -> mlk_texture
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diff changeset
212 struct mlk_texture tex;
486
d6757c30658e core: rework errors
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diff changeset
213 int x, y, err;
140
453651d76f7c core: upgrade message in terms of customization
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diff changeset
214 unsigned int w, h;
100
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parents: 99
diff changeset
215
159
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diff changeset
216 if (msg->w == 0 || msg->h == 0) {
473
02b16dd49b54 core: trace -> mlk_trace
David Demelier <markand@malikania.fr>
parents: 472
diff changeset
217 mlk_tracef("message has null dimensions");
159
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diff changeset
218 return;
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parents: 158
diff changeset
219 }
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parents: 158
diff changeset
220
486
d6757c30658e core: rework errors
David Demelier <markand@malikania.fr>
parents: 483
diff changeset
221 if ((err = mlk_texture_new(&tex, msg->w, msg->h)) < 0)
547
c7664b679a95 misc: remove error codes for now
David Demelier <markand@malikania.fr>
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diff changeset
222 mlk_panic();
100
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diff changeset
223
457
04797b35565c core: painter -> mlk_painter
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diff changeset
224 MLK_PAINTER_BEGIN(&tex);
100
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diff changeset
225 draw_frame(msg);
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parents: 99
diff changeset
226 draw_lines(msg);
457
04797b35565c core: painter -> mlk_painter
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parents: 451
diff changeset
227 MLK_PAINTER_END();
100
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parents: 99
diff changeset
228
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diff changeset
229 /* Compute scaling. */
140
453651d76f7c core: upgrade message in terms of customization
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diff changeset
230 w = msg->w * msg->scale;
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diff changeset
231 h = msg->h * msg->scale;
100
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parents: 99
diff changeset
232
140
453651d76f7c core: upgrade message in terms of customization
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parents: 136
diff changeset
233 /* Centerize within its drawing area. */
487
f2d3c5a97884 ui: align -> mlk_align
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diff changeset
234 mlk_align(MLK_ALIGN_CENTER, &x, &y, w, h, msg->x, msg->y, msg->w, msg->h);
100
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parents: 99
diff changeset
235
140
453651d76f7c core: upgrade message in terms of customization
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diff changeset
236 /* Draw and clear. */
472
bc5483849614 core: texture -> mlk_texture
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diff changeset
237 mlk_texture_scale(&tex, 0, 0, msg->w, msg->h, x, y, w, h, 0);
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diff changeset
238 mlk_texture_finish(&tex);
24
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239 }
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240
622
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diff changeset
241 // TODO: add dark variant.
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diff changeset
242 struct mlk_message_style mlk_message_style_dark = {
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diff changeset
243 .background = MLK_UI_COLOR_BG,
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244 .border = MLK_UI_COLOR_BORDER,
534
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245 .border_size = MLK_UI_BORDER,
622
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246 .color = MLK_UI_COLOR_TEXT,
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247 .color_selected = MLK_UI_COLOR_SELECTED,
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248 .padding = MLK_UI_PADDING,
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249 .timeout = MLK_MESSAGE_TIMEOUT_DEFAULT,
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250 .speed = MLK_MESSAGE_SPEED_DEFAULT,
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251 .query = query,
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252 .update = update,
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parents: 603
diff changeset
253 .draw = draw
534
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
254 };
622
ec334c61bb81 rpg: simplify message
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diff changeset
255
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diff changeset
256 struct mlk_message_style mlk_message_style_light = {
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diff changeset
257 .background = MLK_UI_COLOR_BG,
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258 .border = MLK_UI_COLOR_BORDER,
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diff changeset
259 .border_size = MLK_UI_BORDER,
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260 .color = MLK_UI_COLOR_TEXT,
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261 .color_selected = MLK_UI_COLOR_SELECTED,
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262 .padding = MLK_UI_PADDING,
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diff changeset
263 .timeout = MLK_MESSAGE_TIMEOUT_DEFAULT,
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diff changeset
264 .speed = MLK_MESSAGE_SPEED_DEFAULT,
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diff changeset
265 .query = query,
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diff changeset
266 .update = update,
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parents: 603
diff changeset
267 .draw = draw
534
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diff changeset
268 };
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
269
622
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diff changeset
270 struct mlk_message_style *mlk_message_style = &mlk_message_style_light;
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diff changeset
271
24
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parents:
diff changeset
272 void
534
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
273 mlk_message_start(struct mlk_message *msg)
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parents: 505
diff changeset
274 {
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
275 assert(msg);
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
276
622
ec334c61bb81 rpg: simplify message
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diff changeset
277 struct mlk_message_style *style = MLK__STYLE(msg, mlk_message_style);
534
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
278
622
ec334c61bb81 rpg: simplify message
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diff changeset
279 if ((msg->flags & (MLK_MESSAGE_FLAGS_FADEIN | MLK_MESSAGE_FLAGS_FADEOUT)) && style->speed == 0)
534
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
280 mlk_tracef("message has animation but zero delay");
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parents: 505
diff changeset
281
88e9bd420a28 rpg: add delegate/style support to mlk_message
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diff changeset
282 msg->elapsed = 0;
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diff changeset
283 msg->scale = msg->flags & MLK_MESSAGE_FLAGS_FADEIN ? 0.0 : 1.0;
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diff changeset
284 msg->state = msg->flags & MLK_MESSAGE_FLAGS_FADEIN
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285 ? MLK_MESSAGE_STATE_OPENING
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286 : MLK_MESSAGE_STATE_SHOWING;
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287
622
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288 if (msg->flags & MLK_MESSAGE_FLAGS_AUTOMATIC && style->timeout == 0)
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289 mlk_tracef("message is automatic but has zero timeout");
534
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290 }
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291
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292 int
622
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293 mlk_message_query(struct mlk_message *msg, unsigned int *w, unsigned int *h)
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294 {
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295 assert(msg);
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296
622
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297 return MLK__STYLE_CALL(msg->style, mlk_message_style, query, msg, w, h);
534
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298 }
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299
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300 void
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301 mlk_message_handle(struct mlk_message *msg, const union mlk_event *ev)
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302 {
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303 assert(msg);
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304 assert(ev);
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305
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306 /* Skip if the message animation hasn't complete. */
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307 if (msg->state != MLK_MESSAGE_STATE_SHOWING)
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308 return;
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309
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310 /* Only keyboard event are valid. */
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311 if (ev->type != MLK_EVENT_KEYDOWN || msg->state == MLK_MESSAGE_STATE_NONE)
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312 return;
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313
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314 switch (ev->key.key) {
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315 case MLK_KEY_UP:
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316 if (msg->index > 0)
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317 msg->index--;
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318 break;
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319 case MLK_KEY_DOWN:
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320 if (msg->index + 1 < msg->linesz && msg->lines[msg->index + 1])
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321 msg->index++;
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322 break;
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323 case MLK_KEY_ENTER:
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324 msg->state = msg->flags & MLK_MESSAGE_FLAGS_FADEOUT
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325 ? MLK_MESSAGE_STATE_HIDING
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326 : MLK_MESSAGE_STATE_NONE;
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327 msg->elapsed = 0;
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328 break;
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329 default:
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330 break;
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331 }
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332 }
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333
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334 int
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335 mlk_message_update(struct mlk_message *msg, unsigned int ticks)
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336 {
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337 assert(msg);
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338
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339 MLK__STYLE_CALL(msg->style, mlk_message_style, update, msg, ticks);
534
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340
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341 return msg->state == MLK_MESSAGE_STATE_NONE;
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342 }
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343
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344 void
622
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345 mlk_message_draw(struct mlk_message *msg)
534
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346 {
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347 assert(msg);
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348
622
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349 MLK__STYLE_CALL(msg->style, mlk_message_style, draw, msg);
534
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350 }
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351
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352 void
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353 mlk_message_hide(struct mlk_message *msg)
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354 {
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355 assert(msg);
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diff changeset
356
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357 msg->state = MLK_MESSAGE_STATE_HIDING;
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358 msg->elapsed = 0;
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359 }