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annotate libmlk-ui/mlk/ui/gridmenu.c @ 610:90ac81e4c190

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ui: reorder params
author David Demelier <markand@malikania.fr>
date Sat, 12 Aug 2023 09:44:49 +0200
parents d97674d33764
children 297fa28cac90
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1 /*
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2 * gridmenu.c -- GUI grid menu
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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 <math.h>
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21
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22 #include <mlk/core/err.h>
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23 #include <mlk/core/event.h>
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24 #include <mlk/core/font.h>
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25 #include <mlk/core/maths.h>
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26 #include <mlk/core/painter.h>
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27 #include <mlk/core/trace.h>
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28 #include <mlk/core/window.h>
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29
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30 #include "gridmenu.h"
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31 #include "frame.h"
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32 #include "label.h"
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33 #include "style.h"
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34 #include "ui_p.h"
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35
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36 struct index {
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37 unsigned int row;
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38 unsigned int col;
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39 };
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40
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41 static struct index
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42 get_index(const struct mlk_gridmenu *menu)
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43 {
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44 return (struct index) {
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45 .row = (unsigned int)(menu->selected / menu->ncols),
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46 .col = (unsigned int)(menu->selected % menu->ncols)
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47 };
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48 }
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49
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50 static int
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51 handle_keydown(struct mlk_gridmenu *menu, const struct mlk_event_key *key)
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52 {
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53 assert(key->type == MLK_EVENT_KEYDOWN);
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54
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55 const struct index idx = get_index(menu);
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56 int validate = 0;
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57
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58 switch (key->key) {
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59 case MLK_KEY_UP:
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60 if (idx.row > 0)
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61 menu->selected -= menu->ncols;
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62 break;
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63 case MLK_KEY_RIGHT:
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64 if (menu->selected + 1U < menu->itemsz)
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65 menu->selected += 1;
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66 break;
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67 case MLK_KEY_DOWN:
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68 if (idx.row + 1U < menu->itemsz / menu->ncols)
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69 menu->selected += menu->ncols;
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70 else
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71 menu->selected = menu->itemsz - 1;
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72 break;
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73 case MLK_KEY_LEFT:
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74 if (idx.col > 0)
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75 menu->selected -= 1;
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76 break;
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77 case MLK_KEY_ENTER:
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78 validate = 1;
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79 break;
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80 default:
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81 break;
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82 }
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83
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84 return validate;
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85 }
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86
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87 static int
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88 handle_clickdown(struct mlk_gridmenu *menu, const struct mlk_event_click *click)
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89 {
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90 assert(click->type == MLK_EVENT_CLICKDOWN);
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91
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92 const struct mlk_style_attr *attr = &menu->style->normal;
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93 size_t pagesz, pagenr, selected, c = 0, r = 0;
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94 int x, y;
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95
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96 pagesz = menu->nrows * menu->ncols;
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97 pagenr = menu->selected / pagesz;
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98
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99 for (size_t i = 0; i < pagesz; ++i) {
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100 x = (int)(menu->x + attr->geo.padding + (c * menu->eltw) + (c * menu->spacew));
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101 y = (int)(menu->y + attr->geo.padding + (r * menu->elth) + (r * menu->spaceh));
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102
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103 if (mlk_maths_is_boxed(click->x, click->y, x, y, menu->eltw, menu->elth)) {
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104 selected = c + r * menu->ncols;
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105 selected += pagesz * pagenr;
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106
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107 if (selected < menu->itemsz) {
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108 menu->selected = selected;
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109 return 1;
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110 }
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111 }
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112
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113 if (++c >= menu->ncols) {
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114 ++r;
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115 c = 0;
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116 }
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117 }
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118
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119 return 0;
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120 }
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121
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122 static void
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123 resize(struct mlk_gridmenu_delegate *self, struct mlk_gridmenu *menu)
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124 {
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125 (void)self;
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126
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127 const struct mlk_style_attr *attr = &menu->style->normal;
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128 unsigned int reqw = 0, reqh = 0, lw, lh;
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129
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130 /* Compute which item has the bigger width/height to create a spacing. */
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131 menu->eltw = menu->elth = 0;
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132 menu->spacew = menu->spaceh = 0;
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133
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134 for (size_t i = 0; i < menu->itemsz; ++i) {
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135 if (!(menu->items[i]))
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136 continue;
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137
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138 mlk_font_query(attr->font, menu->items[i], &lw, &lh);
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139
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diff changeset
140 menu->eltw = fmax(menu->eltw, lw);
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diff changeset
141 menu->elth = fmax(menu->elth, lh);
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142 }
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143
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144 /* Total texture size required to draw items. */
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145 reqw = (attr->geo.padding * 3) + (menu->eltw * menu->ncols);
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146 reqh = (attr->geo.padding * 3) + (menu->elth * menu->nrows);
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147
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148 /*
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149 * Compute spacing between elements. We remove the padding because it
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150 * is outside of the elements.
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151 */
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152 if (reqw > menu->w) {
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153 mlk_tracef(_("gridmenu width is too small: %u < %u"), menu->w, reqw);
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154 menu->spacew = 1;
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155 } else if (menu->ncols > 1) {
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diff changeset
156 reqw -= attr->geo.padding * 2;
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157 menu->spacew = (menu->w - reqw) / menu->ncols;
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158 }
508
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159
608
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160 if (reqh > menu->h) {
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161 mlk_tracef(_("gridmenu height is too small: %u < %u"), menu->h, reqh);
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162 menu->spaceh = 1;
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163 } else if (menu->nrows > 1) {
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164 reqh -= attr->geo.padding * 2;
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165 menu->spaceh = (menu->h - reqh) / menu->nrows;
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166 }
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167 }
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168
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169 static int
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170 handle(struct mlk_gridmenu_delegate *self,
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171 struct mlk_gridmenu *menu,
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172 const union mlk_event *ev)
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173 {
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174 (void)self;
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175
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176 switch (ev->type) {
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177 case MLK_EVENT_KEYDOWN:
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178 return handle_keydown(menu, &ev->key);
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179 case MLK_EVENT_CLICKDOWN:
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180 return handle_clickdown(menu, &ev->click);
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181 default:
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182 break;
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diff changeset
183 }
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184
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185 return 0;
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186 }
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187
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188 static void
609
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diff changeset
189 draw_frame(struct mlk_gridmenu_delegate *self, const struct mlk_gridmenu *menu)
608
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190 {
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191 (void)self;
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192
609
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193 struct mlk_frame frame;
506
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194
609
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195 mlk_frame_init(&frame, menu->style, &mlk_frame_delegate);
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diff changeset
196 frame.x = menu->x;
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parents: 608
diff changeset
197 frame.y = menu->y;
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diff changeset
198 frame.w = menu->w;
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diff changeset
199 frame.h = menu->h;
506
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diff changeset
200
609
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diff changeset
201 mlk_frame_draw(&frame);
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diff changeset
202 mlk_frame_finish(&frame);
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203 }
506
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diff changeset
204
609
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diff changeset
205 static void
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diff changeset
206 draw_item(struct mlk_gridmenu_delegate *self,
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diff changeset
207 const struct mlk_gridmenu *menu,
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diff changeset
208 const char *item,
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diff changeset
209 unsigned int row,
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David Demelier <markand@malikania.fr>
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diff changeset
210 unsigned int col,
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diff changeset
211 int selected)
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diff changeset
212 {
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diff changeset
213 (void)self;
506
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diff changeset
214
609
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diff changeset
215 struct mlk_label label;
506
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diff changeset
216
610
90ac81e4c190 ui: reorder params
David Demelier <markand@malikania.fr>
parents: 609
diff changeset
217 mlk_label_init(&label, &mlk_label_if, menu->style);
609
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parents: 608
diff changeset
218 label.x = menu->x + menu->style->normal.geo.padding + (col * menu->eltw) + (col * menu->spacew);
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parents: 608
diff changeset
219 label.y = menu->y + menu->style->normal.geo.padding + (row * menu->elth) + (row * menu->spaceh);
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parents: 608
diff changeset
220 label.text = item;
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diff changeset
221 label.selected = selected;
506
e205625015ba ui: gridmenu is stylable
David Demelier <markand@malikania.fr>
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diff changeset
222
609
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David Demelier <markand@malikania.fr>
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diff changeset
223 mlk_label_draw(&label);
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David Demelier <markand@malikania.fr>
parents: 608
diff changeset
224 mlk_label_finish(&label);
506
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David Demelier <markand@malikania.fr>
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diff changeset
225 }
e205625015ba ui: gridmenu is stylable
David Demelier <markand@malikania.fr>
parents: 505
diff changeset
226
608
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diff changeset
227 struct mlk_gridmenu_delegate mlk_gridmenu_delegate = {
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diff changeset
228 .resize = resize,
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229 .handle = handle,
609
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diff changeset
230 .draw_frame = draw_frame,
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diff changeset
231 .draw_item = draw_item
506
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diff changeset
232 };
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diff changeset
233
608
2527b000aaa5 ui: do the same with gridmenu
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diff changeset
234 void
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David Demelier <markand@malikania.fr>
parents: 603
diff changeset
235 mlk_gridmenu_init(struct mlk_gridmenu *menu,
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
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diff changeset
236 struct mlk_gridmenu_delegate *dt,
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
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diff changeset
237 struct mlk_style *st)
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diff changeset
238 {
2527b000aaa5 ui: do the same with gridmenu
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parents: 603
diff changeset
239 assert(menu);
395
ef2fc4442ed5 ui: don't use fixed size arrays
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diff changeset
240
608
2527b000aaa5 ui: do the same with gridmenu
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parents: 603
diff changeset
241 menu->x = 0;
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
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diff changeset
242 menu->y = 0;
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
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diff changeset
243 menu->w = 0;
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
parents: 603
diff changeset
244 menu->h = 0;
2527b000aaa5 ui: do the same with gridmenu
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diff changeset
245 menu->items = NULL;
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diff changeset
246 menu->itemsz = 0;
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diff changeset
247 menu->nrows = 0;
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diff changeset
248 menu->ncols = 0;
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diff changeset
249 menu->delegate = dt ? dt : &mlk_gridmenu_delegate;
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
parents: 603
diff changeset
250 menu->style = st ? st : &mlk_style;
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diff changeset
251
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
parents: 603
diff changeset
252 /* Can't be computed yet. */
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parents: 603
diff changeset
253 menu->eltw = 0;
2527b000aaa5 ui: do the same with gridmenu
David Demelier <markand@malikania.fr>
parents: 603
diff changeset
254 menu->elth = 0;
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parents: 603
diff changeset
255 menu->spacew = 0;
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diff changeset
256 menu->spaceh = 0;
181
867b60e6258a ui: add gridmenu object, closes #2511 @4h
David Demelier <markand@malikania.fr>
parents:
diff changeset
257 }
867b60e6258a ui: add gridmenu object, closes #2511 @4h
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parents:
diff changeset
258
867b60e6258a ui: add gridmenu object, closes #2511 @4h
David Demelier <markand@malikania.fr>
parents:
diff changeset
259 void
608
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diff changeset
260 mlk_gridmenu_resize(struct mlk_gridmenu *menu,
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diff changeset
261 int x,
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diff changeset
262 int y,
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diff changeset
263 unsigned int w,
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parents: 603
diff changeset
264 unsigned int h)
181
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parents:
diff changeset
265 {
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David Demelier <markand@malikania.fr>
parents:
diff changeset
266 assert(menu);
867b60e6258a ui: add gridmenu object, closes #2511 @4h
David Demelier <markand@malikania.fr>
parents:
diff changeset
267
395
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diff changeset
268 menu->x = x;
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diff changeset
269 menu->y = y;
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diff changeset
270 menu->w = w;
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diff changeset
271 menu->h = h;
181
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parents:
diff changeset
272
608
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diff changeset
273 if (menu->delegate->resize)
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diff changeset
274 menu->delegate->resize(menu->delegate, menu);
181
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parents:
diff changeset
275 }
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parents:
diff changeset
276
395
ef2fc4442ed5 ui: don't use fixed size arrays
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diff changeset
277 int
492
c7b18475f640 ui: gridmenu -> mlk_gridmenu
David Demelier <markand@malikania.fr>
parents: 491
diff changeset
278 mlk_gridmenu_handle(struct mlk_gridmenu *menu, const union mlk_event *ev)
181
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parents:
diff changeset
279 {
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parents:
diff changeset
280 assert(menu);
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diff changeset
281 assert(ev);
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parents:
diff changeset
282
608
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diff changeset
283 if (menu->delegate->handle)
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diff changeset
284 return menu->delegate->handle(menu->delegate, menu, ev);
395
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David Demelier <markand@malikania.fr>
parents: 378
diff changeset
285
ef2fc4442ed5 ui: don't use fixed size arrays
David Demelier <markand@malikania.fr>
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diff changeset
286 return 0;
181
867b60e6258a ui: add gridmenu object, closes #2511 @4h
David Demelier <markand@malikania.fr>
parents:
diff changeset
287 }
867b60e6258a ui: add gridmenu object, closes #2511 @4h
David Demelier <markand@malikania.fr>
parents:
diff changeset
288
867b60e6258a ui: add gridmenu object, closes #2511 @4h
David Demelier <markand@malikania.fr>
parents:
diff changeset
289 void
506
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David Demelier <markand@malikania.fr>
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diff changeset
290 mlk_gridmenu_update(struct mlk_gridmenu *menu, unsigned int ticks)
e205625015ba ui: gridmenu is stylable
David Demelier <markand@malikania.fr>
parents: 505
diff changeset
291 {
608
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292 assert(menu);
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293
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294 if (menu->delegate->update)
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295 menu->delegate->update(menu->delegate, menu, ticks);
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296 }
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297
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298 void
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299 mlk_gridmenu_draw(const struct mlk_gridmenu *menu)
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300 {
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301 assert(menu);
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302
609
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303 size_t pagesz, pagenr, item;
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304 unsigned int row = 0, col = 0;
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305 int selected;
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306
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307 if (menu->delegate->draw_frame)
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308 menu->delegate->draw_frame(menu->delegate, menu);
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309
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310 /*
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311 * Select the first top-left column based on the current selection and
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312 * the number of rows/columns.
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313 */
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314 pagesz = menu->nrows * menu->ncols;
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315 pagenr = menu->selected / pagesz;
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316
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317 for (size_t i = 0; i < pagesz; ++i) {
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318 item = i + pagenr * pagesz;
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319
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320 if (item >= menu->itemsz || !menu->items[item])
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321 continue;
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322
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323 selected = i == menu->selected % pagesz;
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324
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325 if (menu->delegate->draw_item)
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326 menu->delegate->draw_item(
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327 menu->delegate,
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328 menu,
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329 menu->items[item],
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330 row,
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331 col,
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332 selected
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333 );
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334
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335 if (++col >= menu->ncols) {
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336 ++row;
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337 col = 0;
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338 }
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339 }
181
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340 }