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annotate nuklear_ui/blastem_nuklear.c @ 1485:369da70ee2c2 nuklear_ui

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Filter file list in Nuklear UI
author Michael Pavone <pavone@retrodev.com>
date Sun, 26 Nov 2017 18:33:36 -0800
parents d82af64c94d2
children a6881d0d76d0
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1 #define NK_IMPLEMENTATION
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2 #define NK_SDL_GLES2_IMPLEMENTATION
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3
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4 #include <stdlib.h>
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5 #include "blastem_nuklear.h"
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6 #include "font.h"
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7 #include "../render.h"
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8 #include "../render_sdl.h"
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9 #include "../util.h"
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10 #include "../paths.h"
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11 #include "../saves.h"
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12 #include "../blastem.h"
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13 #include "../config.h"
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14
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15 static struct nk_context *context;
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16
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17 typedef void (*view_fun)(struct nk_context *);
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18 static view_fun current_view;
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19 static view_fun previous_view;
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20
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21 void view_play(struct nk_context *context)
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22 {
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23
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24 }
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25
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26 void view_load(struct nk_context *context)
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27 {
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28 static char *current_path;
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29 static dir_entry *entries;
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30 static size_t num_entries;
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31 static uint32_t selected_entry;
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32 static char **ext_list;
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33 static uint32_t num_exts;
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34 static uint8_t got_ext_list;
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35 if (!current_path) {
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36 get_initial_browse_path(&current_path);
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37 }
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38 if (!entries) {
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39 entries = get_dir_list(current_path, &num_entries);
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40 if (entries) {
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41 sort_dir_list(entries, num_entries);
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42 }
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43 }
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44 if (!got_ext_list) {
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45 ext_list = get_extension_list(config, &num_exts);
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46 got_ext_list = 1;
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47 }
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48 uint32_t width = render_width();
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49 uint32_t height = render_height();
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50 if (nk_begin(context, "Load ROM", nk_rect(0, 0, width, height), 0)) {
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51 nk_layout_row_static(context, height - 100, width - 60, 1);
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52 if (nk_group_begin(context, "Select ROM", NK_WINDOW_BORDER | NK_WINDOW_TITLE)) {
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53 nk_layout_row_static(context, 28, width-100, 1);
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54 for (uint32_t i = 0; i < num_entries; i++)
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55 {
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56 if (entries[i].name[0] == '.' && entries[i].name[1] != '.') {
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57 continue;
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58 }
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59 if (num_exts && !entries[i].is_dir && !path_matches_extensions(entries[i].name, ext_list, num_exts)) {
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60 continue;
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61 }
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62 int selected = i == selected_entry;
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63 nk_selectable_label(context, entries[i].name, NK_TEXT_ALIGN_LEFT, &selected);
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64 if (selected) {
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65 selected_entry = i;
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66 }
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67 }
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68 nk_group_end(context);
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69 }
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70 nk_layout_row_static(context, 52, width > 600 ? 300 : width / 2, 2);
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71 if (nk_button_label(context, "Back")) {
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72 current_view = previous_view;
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73 }
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74 if (nk_button_label(context, "Open")) {
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75 char *full_path = path_append(current_path, entries[selected_entry].name);
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76 if (entries[selected_entry].is_dir) {
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77 free(current_path);
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78 current_path = full_path;
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79 free_dir_list(entries, num_entries);
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80 entries = NULL;
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81 } else {
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82 if (current_system) {
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83 current_system->next_rom = full_path;
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84 current_system->request_exit(current_system);
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85 } else {
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86 init_system_with_media(full_path, SYSTEM_UNKNOWN);
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87 free(full_path);
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88 }
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89 current_view = view_play;
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90 }
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91 }
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92 nk_end(context);
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93 }
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94 }
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95
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96 void view_about(struct nk_context *context)
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97 {
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98 }
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99
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100 typedef struct {
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101 const char *title;
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102 view_fun next_view;
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103 } menu_item;
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104
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105 static save_slot_info *slots;
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106 static uint32_t num_slots, selected_slot;
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107
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108 void view_choose_state(struct nk_context *context, uint8_t is_load)
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109 {
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110 uint32_t width = render_width();
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111 uint32_t height = render_height();
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112 if (nk_begin(context, "Slot Picker", nk_rect(0, 0, width, height), 0)) {
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113 nk_layout_row_static(context, height - 100, width - 60, 1);
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114 if (nk_group_begin(context, "Select Save Slot", NK_WINDOW_BORDER | NK_WINDOW_TITLE)) {
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115 nk_layout_row_static(context, 28, width-100, 1);
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116 if (!slots) {
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117 slots = get_slot_info(current_system, &num_slots);
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118 }
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119 for (uint32_t i = 0; i < num_slots; i++)
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120 {
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121 int selected = i == selected_slot;
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122 nk_selectable_label(context, slots[i].desc, NK_TEXT_ALIGN_LEFT, &selected);
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123 if (selected && (slots[i].modification_time || !is_load)) {
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124 selected_slot = i;
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125 }
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126 }
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127 nk_group_end(context);
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128 }
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129 nk_layout_row_static(context, 52, width > 600 ? 300 : width / 2, 2);
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130 if (nk_button_label(context, "Back")) {
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131 current_view = previous_view;
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132 }
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133 if (is_load) {
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134 if (nk_button_label(context, "Load")) {
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diff changeset
135 current_system->load_state(current_system, selected_slot);
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136 current_view = view_play;
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137 }
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138 } else {
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139 if (nk_button_label(context, "Save")) {
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140 current_system->save_state = selected_slot + 1;
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141 current_view = view_play;
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142 }
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143 }
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144 nk_end(context);
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145 }
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146 }
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147
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148 void view_save_state(struct nk_context *context)
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149 {
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150 view_choose_state(context, 0);
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151 }
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152
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153 void view_load_state(struct nk_context *context)
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154 {
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155 view_choose_state(context, 1);
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156 }
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157
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158 static void menu(struct nk_context *context, uint32_t num_entries, const menu_item *items)
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159 {
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160 const uint32_t button_height = 52;
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161 const uint32_t ideal_button_width = 300;
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162 const uint32_t button_space = 6;
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163
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164 uint32_t width = render_width();
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165 uint32_t height = render_height();
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166 uint32_t top = height/2 - (button_height * num_entries)/2;
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167 uint32_t button_width = width > ideal_button_width ? ideal_button_width : width;
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168 uint32_t left = width/2 - button_width/2;
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169
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170 nk_layout_space_begin(context, NK_STATIC, top + button_height * num_entries, num_entries);
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171 for (uint32_t i = 0; i < num_entries; i++)
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172 {
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173 nk_layout_space_push(context, nk_rect(left, top + i * button_height, button_width, button_height-button_space));
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174 if (nk_button_label(context, items[i].title)) {
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175 previous_view = current_view;
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176 current_view = items[i].next_view;
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177 if (!current_view) {
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178 exit(0);
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179 }
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180 if (current_view == view_save_state || current_view == view_load_state) {
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diff changeset
181 free_slot_info(slots);
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182 slots = NULL;
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183 }
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184 }
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185 }
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186 nk_layout_space_end(context);
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187 }
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188
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189 void view_pause(struct nk_context *context)
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190 {
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191 static menu_item items[] = {
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192 {"Resume", view_play},
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193 {"Load ROM", view_load},
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194 {"Save State", view_save_state},
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195 {"Load State", view_load_state},
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196 {"Exit", NULL}
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197 };
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198
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199 const uint32_t num_buttons = 3;
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200 if (nk_begin(context, "Main Menu", nk_rect(0, 0, render_width(), render_height()), 0)) {
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201 menu(context, sizeof(items)/sizeof(*items), items);
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202 nk_end(context);
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203 }
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204 }
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205
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206 void view_menu(struct nk_context *context)
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207 {
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208 static menu_item items[] = {
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209 {"Load ROM", view_load},
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210 {"About", view_about},
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211 {"Exit", NULL}
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212 };
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213
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214 const uint32_t num_buttons = 3;
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diff changeset
215 if (nk_begin(context, "Main Menu", nk_rect(0, 0, render_width(), render_height()), 0)) {
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diff changeset
216 menu(context, sizeof(items)/sizeof(*items), items);
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diff changeset
217 nk_end(context);
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218 }
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219 }
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diff changeset
220
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diff changeset
221 void blastem_nuklear_render(void)
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diff changeset
222 {
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diff changeset
223 nk_input_end(context);
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diff changeset
224 current_view(context);
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diff changeset
225 nk_sdl_render(NK_ANTI_ALIASING_ON, 512 * 1024, 128 * 1024);
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diff changeset
226 nk_input_begin(context);
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227 }
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diff changeset
228
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diff changeset
229 void idle_loop(void)
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diff changeset
230 {
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diff changeset
231 const uint32_t MIN_UI_DELAY = 15;
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diff changeset
232 static uint32_t last;
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diff changeset
233 while (current_view != view_play)
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diff changeset
234 {
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diff changeset
235 uint32_t current = render_elapsed_ms();
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diff changeset
236 if ((current - last) < MIN_UI_DELAY) {
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237 render_sleep_ms(MIN_UI_DELAY - (current - last) - 1);
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238 }
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diff changeset
239 last = current;
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diff changeset
240 render_update_display();
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diff changeset
241 }
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diff changeset
242 }
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diff changeset
243 static void handle_event(SDL_Event *event)
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diff changeset
244 {
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245 nk_sdl_handle_event(event);
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246 }
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diff changeset
247
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248 static void context_destroyed(void)
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249 {
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250 nk_sdl_device_destroy();
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251 }
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252 static void context_created(void)
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253 {
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254 nk_sdl_device_create();
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255 struct nk_font_atlas *atlas;
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256 nk_sdl_font_stash_begin(&atlas);
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257 char *font = default_font_path();
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258 if (!font) {
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259 fatal_error("Failed to find default font path\n");
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260 }
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261 struct nk_font *def_font = nk_font_atlas_add_from_file(atlas, font, 30, NULL);
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262 nk_sdl_font_stash_end();
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263 nk_style_set_font(context, &def_font->handle);
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264 }
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265
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266 void show_pause_menu(void)
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267 {
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268 context->style.window.background = nk_rgba(0, 0, 0, 128);
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269 context->style.window.fixed_background = nk_style_item_color(nk_rgba(0, 0, 0, 128));
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270 current_view = view_pause;
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271 }
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272
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273 static uint8_t active;
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274 uint8_t is_nuklear_active(void)
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275 {
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276 return active;
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277 }
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278
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279 uint8_t is_nuklear_available(void)
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280 {
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281 if (!render_has_gl()) {
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282 //currently no fallback if GL2 unavailable
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283 return 0;
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284 }
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285 char *style = tern_find_path(config, "ui\0style\0", TVAL_PTR).ptrval;
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286 if (!style) {
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287 return 1;
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288 }
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289 return strcmp(style, "rom") != 0;
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290 }
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291
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292 void blastem_nuklear_init(uint8_t file_loaded)
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293 {
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294 context = nk_sdl_init(render_get_window());
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295
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296 struct nk_font_atlas *atlas;
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297 nk_sdl_font_stash_begin(&atlas);
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298 char *font = default_font_path();
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299 if (!font) {
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300 fatal_error("Failed to find default font path\n");
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301 }
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302 struct nk_font *def_font = nk_font_atlas_add_from_file(atlas, font, 30, NULL);
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303 nk_sdl_font_stash_end();
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304 nk_style_set_font(context, &def_font->handle);
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305 current_view = file_loaded ? view_play : view_menu;
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306 render_set_ui_render_fun(blastem_nuklear_render);
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307 render_set_event_handler(handle_event);
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308 render_set_gl_context_handlers(context_destroyed, context_created);
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309 active = 1;
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310 idle_loop();
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311 }