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annotate libmlk-ui/mlk/ui/notify.c @ 451:90a097b1aa0f

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core: font -> mlk_font
author David Demelier <markand@malikania.fr>
date Sat, 18 Feb 2023 20:40:01 +0100
parents 773a082f0b91
children bc5483849614
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1 /*
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2 * notify.c -- in game notifications
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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 <stddef.h>
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21 #include <string.h>
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22
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23 #include <mlk/core/font.h>
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24 #include <mlk/core/texture.h>
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25 #include <mlk/core/trace.h>
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26 #include <mlk/core/window.h>
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27
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28 #include "align.h"
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29 #include "frame.h"
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30 #include "label.h"
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31 #include "notify.h"
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32 #include "theme.h"
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33
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34 #define WIDTH (window.w / 3)
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35 #define HEIGHT (window.h / 10)
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36
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37 struct geo {
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38 const struct theme *theme;
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39 int frame_x;
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40 int frame_y;
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41 unsigned int frame_w;
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42 unsigned int frame_h;
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43 int icon_x;
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44 int icon_y;
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45 int title_x;
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46 int title_y;
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47 int body_x;
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48 int body_y;
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49 };
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50
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51 static void draw(const struct notify *, size_t);
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52
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53 static const struct notify_system default_system = {
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54 .draw = draw
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55 };
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56 static const struct notify_system *system = &default_system;
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57 static struct notify stack[NOTIFY_MAX];
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58 static size_t stacksz;
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59
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60 static void
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61 geometry(struct geo *geo, const struct notify *n, size_t index)
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62 {
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63 int x, y;
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64
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65 /* Determine theme. */
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66 geo->theme = system->theme ? system->theme : theme_default();
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67
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68 /* Determine notification position. */
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69 x = window.w - geo->theme->padding;
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70 x -= WIDTH;
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71
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72 y = geo->theme->padding * (index + 1);;
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73 y += HEIGHT * index;
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74
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75 /* Content frame. */
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76 geo->frame_x = x;
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77 geo->frame_y = y;
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78 geo->frame_w = WIDTH;
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79 geo->frame_h = HEIGHT;
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80
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81 /* Align icon at the left center. */
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82 if (n->icon->h >= HEIGHT) {
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83 tracef("notification icon is too large: %u > %u", n->icon->h, HEIGHT);
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84 geo->icon_x = x + geo->theme->padding;
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85 geo->icon_y = y + geo->theme->padding;
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86 } else {
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87 align(ALIGN_LEFT, &geo->icon_x, &geo->icon_y, n->icon->w, n->icon->h, x, y, WIDTH, HEIGHT);
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88 geo->icon_x += geo->icon_y - y;
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89 }
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90
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91 /* Align title to the right of the icon at the same y coordinate. */
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92 geo->title_x = geo->icon_x + n->icon->w + geo->theme->padding;
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93 geo->title_y = geo->icon_y;
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94 geo->title_y -= mlk_font_height(geo->theme->fonts[THEME_FONT_IMPORTANT]) / 2;
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95
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96 /* Align body so it ends at the end of the icon. */
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97 geo->body_x = geo->title_x;
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98 geo->body_y = geo->icon_y + n->icon->h;
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99 geo->body_y -= mlk_font_height(geo->theme->fonts[THEME_FONT_INTERFACE]) / 2;
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100 }
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101
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102 static void
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103 draw_frame(const struct geo *geo)
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104 {
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105 const struct frame f = {
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106 .x = geo->frame_x,
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107 .y = geo->frame_y,
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108 .w = geo->frame_w,
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109 .h = geo->frame_h
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110 };
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111
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112 frame_draw(&f);
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113 }
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114
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115 static void
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116 draw_icon(const struct geo *geo, const struct notify *n)
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117 {
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118 texture_draw(n->icon, geo->icon_x, geo->icon_y);
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119 }
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120
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121 #include <stdio.h>
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122
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123 static void
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124 draw_title(const struct geo *geo, const struct notify *n)
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125 {
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126 const struct label l = {
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127 .x = geo->title_x,
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128 .y = geo->title_y,
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129 .text = n->title,
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130 .flags = LABEL_FLAGS_SHADOW | LABEL_FLAGS_IMPORTANT
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131 };
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132
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133 label_draw(&l);
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134 }
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135
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136 static void
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137 draw_body(const struct geo *geo, const struct notify *n)
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138 {
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139 const struct label l = {
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140 .x = geo->body_x,
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141 .y = geo->body_y,
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142 .text = n->body,
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143 .flags = LABEL_FLAGS_SHADOW
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144 };
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145
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146 label_draw(&l);
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147 }
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148
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149 static void
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150 draw(const struct notify *n, size_t index)
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151 {
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152 struct geo geo;
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153
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154 /* Compute notification size and widgets. */
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155 geometry(&geo, n, index);
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156
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157 draw_frame(&geo);
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158 draw_icon(&geo, n);
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159 draw_title(&geo, n);
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160 draw_body(&geo, n);
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161 }
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162
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163 void
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164 notify(const struct texture *icon, const char *title, const char *body)
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165 {
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166 assert(icon);
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167 assert(title);
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168 assert(body);
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169
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170 struct notify *n;
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171
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172 if (stacksz >= NOTIFY_MAX) {
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173 memmove(&stack[0], &stack[1], sizeof (stack[0]) - NOTIFY_MAX - 1);
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174 n = &stack[NOTIFY_MAX - 1];
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175 } else
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176 n = &stack[stacksz++];
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177
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178 memset(n, 0, sizeof (*n));
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179 n->icon = icon;
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180 n->title = title;
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181 n->body = body;
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182 }
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183
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184 void
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185 notify_update(unsigned int ticks)
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186 {
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187 struct notify *n;
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188
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189 for (size_t i = 0; i < stacksz; ++i) {
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190 n = &stack[i];
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191 n->elapsed += ticks;
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192
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193 if (n->elapsed >= NOTIFY_TIMEOUT_DEFAULT)
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194 memmove(n, n + 1, sizeof (*n) * (--stacksz - i));
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195 }
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196 }
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197
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198 void
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199 notify_draw(void)
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200 {
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201 for (size_t i = 0; i < stacksz; ++i)
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202 system->draw(&stack[i], i);
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203 }
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204
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205 void
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206 notify_set_system(const struct notify_system *sys)
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207 {
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208 system = sys ? sys : &default_system;
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209 }