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annotate nuklear_ui/blastem_nuklear.c @ 1488:f29bd94ffa76 nuklear_ui

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Don't crash when keys are pressed before ROM is loaded
author Michael Pavone <pavone@retrodev.com>
date Sun, 26 Nov 2017 20:19:36 -0800
parents 6a35815cc409
children 919c0c33885e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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_file_browser(struct nk_context *context, uint8_t normal_open)
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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(normal_open) {
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83 if (current_system) {
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84 current_system->next_rom = full_path;
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85 current_system->request_exit(current_system);
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86 } else {
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87 init_system_with_media(full_path, SYSTEM_UNKNOWN);
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88 free(full_path);
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89 }
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90 } else {
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91 lockon_media(full_path);
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92 free(full_path);
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93 }
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94 current_view = view_play;
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95 }
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96 }
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97 nk_end(context);
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98 }
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99 }
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100
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101 void view_load(struct nk_context *context)
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102 {
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103 view_file_browser(context, 1);
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104 }
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105
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106 void view_lock_on(struct nk_context *context)
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107 {
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108 view_file_browser(context, 0);
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109 }
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110
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111 void view_about(struct nk_context *context)
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112 {
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113 }
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114
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115 typedef struct {
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116 const char *title;
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117 view_fun next_view;
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118 } menu_item;
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119
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120 static save_slot_info *slots;
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121 static uint32_t num_slots, selected_slot;
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122
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123 void view_choose_state(struct nk_context *context, uint8_t is_load)
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124 {
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125 uint32_t width = render_width();
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126 uint32_t height = render_height();
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127 if (nk_begin(context, "Slot Picker", nk_rect(0, 0, width, height), 0)) {
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128 nk_layout_row_static(context, height - 100, width - 60, 1);
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129 if (nk_group_begin(context, "Select Save Slot", NK_WINDOW_BORDER | NK_WINDOW_TITLE)) {
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130 nk_layout_row_static(context, 28, width-100, 1);
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131 if (!slots) {
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132 slots = get_slot_info(current_system, &num_slots);
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133 }
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134 for (uint32_t i = 0; i < num_slots; i++)
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135 {
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diff changeset
136 int selected = i == selected_slot;
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137 nk_selectable_label(context, slots[i].desc, NK_TEXT_ALIGN_LEFT, &selected);
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138 if (selected && (slots[i].modification_time || !is_load)) {
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diff changeset
139 selected_slot = i;
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140 }
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141 }
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diff changeset
142 nk_group_end(context);
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143 }
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diff changeset
144 nk_layout_row_static(context, 52, width > 600 ? 300 : width / 2, 2);
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diff changeset
145 if (nk_button_label(context, "Back")) {
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diff changeset
146 current_view = previous_view;
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147 }
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diff changeset
148 if (is_load) {
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diff changeset
149 if (nk_button_label(context, "Load")) {
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diff changeset
150 current_system->load_state(current_system, selected_slot);
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151 current_view = view_play;
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152 }
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153 } else {
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154 if (nk_button_label(context, "Save")) {
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diff changeset
155 current_system->save_state = selected_slot + 1;
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156 current_view = view_play;
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157 }
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158 }
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diff changeset
159 nk_end(context);
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160 }
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diff changeset
161 }
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162
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163 void view_save_state(struct nk_context *context)
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164 {
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165 view_choose_state(context, 0);
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166 }
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167
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168 void view_load_state(struct nk_context *context)
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169 {
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170 view_choose_state(context, 1);
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171 }
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172
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173 static void menu(struct nk_context *context, uint32_t num_entries, const menu_item *items)
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174 {
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175 const uint32_t button_height = 52;
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176 const uint32_t ideal_button_width = 300;
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177 const uint32_t button_space = 6;
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178
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179 uint32_t width = render_width();
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180 uint32_t height = render_height();
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181 uint32_t top = height/2 - (button_height * num_entries)/2;
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182 uint32_t button_width = width > ideal_button_width ? ideal_button_width : width;
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diff changeset
183 uint32_t left = width/2 - button_width/2;
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diff changeset
184
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185 nk_layout_space_begin(context, NK_STATIC, top + button_height * num_entries, num_entries);
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diff changeset
186 for (uint32_t i = 0; i < num_entries; i++)
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diff changeset
187 {
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diff changeset
188 nk_layout_space_push(context, nk_rect(left, top + i * button_height, button_width, button_height-button_space));
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diff changeset
189 if (nk_button_label(context, items[i].title)) {
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diff changeset
190 previous_view = current_view;
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191 current_view = items[i].next_view;
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diff changeset
192 if (!current_view) {
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193 exit(0);
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194 }
1478
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diff changeset
195 if (current_view == view_save_state || current_view == view_load_state) {
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diff changeset
196 free_slot_info(slots);
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diff changeset
197 slots = NULL;
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diff changeset
198 }
1474
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199 }
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diff changeset
200 }
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diff changeset
201 nk_layout_space_end(context);
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diff changeset
202 }
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diff changeset
203
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diff changeset
204 void view_pause(struct nk_context *context)
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diff changeset
205 {
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diff changeset
206 static menu_item items[] = {
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207 {"Resume", view_play},
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208 {"Load ROM", view_load},
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6a35815cc409 Enable lock-on in Nuklear UI
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diff changeset
209 {"Lock On", view_lock_on},
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210 {"Save State", view_save_state},
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211 {"Load State", view_load_state},
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diff changeset
212 {"Exit", NULL}
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diff changeset
213 };
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diff changeset
214
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diff changeset
215 const uint32_t num_buttons = 3;
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diff changeset
216 if (nk_begin(context, "Main Menu", nk_rect(0, 0, render_width(), render_height()), 0)) {
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diff changeset
217 menu(context, sizeof(items)/sizeof(*items), items);
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diff changeset
218 nk_end(context);
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diff changeset
219 }
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diff changeset
220 }
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diff changeset
221
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diff changeset
222 void view_menu(struct nk_context *context)
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diff changeset
223 {
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diff changeset
224 static menu_item items[] = {
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diff changeset
225 {"Load ROM", view_load},
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diff changeset
226 {"About", view_about},
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diff changeset
227 {"Exit", NULL}
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diff changeset
228 };
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diff changeset
229
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diff changeset
230 const uint32_t num_buttons = 3;
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diff changeset
231 if (nk_begin(context, "Main Menu", nk_rect(0, 0, render_width(), render_height()), 0)) {
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diff changeset
232 menu(context, sizeof(items)/sizeof(*items), items);
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diff changeset
233 nk_end(context);
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diff changeset
234 }
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parents:
diff changeset
235 }
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parents:
diff changeset
236
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parents:
diff changeset
237 void blastem_nuklear_render(void)
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parents:
diff changeset
238 {
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parents:
diff changeset
239 nk_input_end(context);
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parents:
diff changeset
240 current_view(context);
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diff changeset
241 nk_sdl_render(NK_ANTI_ALIASING_ON, 512 * 1024, 128 * 1024);
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diff changeset
242 nk_input_begin(context);
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parents:
diff changeset
243 }
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diff changeset
244
1486
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diff changeset
245 void ui_idle_loop(void)
1474
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diff changeset
246 {
1482
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diff changeset
247 const uint32_t MIN_UI_DELAY = 15;
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diff changeset
248 static uint32_t last;
1474
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diff changeset
249 while (current_view != view_play)
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diff changeset
250 {
1482
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diff changeset
251 uint32_t current = render_elapsed_ms();
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diff changeset
252 if ((current - last) < MIN_UI_DELAY) {
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diff changeset
253 render_sleep_ms(MIN_UI_DELAY - (current - last) - 1);
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diff changeset
254 }
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diff changeset
255 last = current;
1474
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diff changeset
256 render_update_display();
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diff changeset
257 }
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258 }
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259 static void handle_event(SDL_Event *event)
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260 {
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261 nk_sdl_handle_event(event);
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262 }
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263
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264 static void context_destroyed(void)
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265 {
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266 nk_sdl_device_destroy();
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267 }
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268 static void context_created(void)
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269 {
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270 nk_sdl_device_create();
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271 struct nk_font_atlas *atlas;
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272 nk_sdl_font_stash_begin(&atlas);
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273 char *font = default_font_path();
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274 if (!font) {
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275 fatal_error("Failed to find default font path\n");
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276 }
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277 struct nk_font *def_font = nk_font_atlas_add_from_file(atlas, font, 30, NULL);
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278 nk_sdl_font_stash_end();
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279 nk_style_set_font(context, &def_font->handle);
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280 }
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281
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282 void show_pause_menu(void)
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283 {
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284 context->style.window.background = nk_rgba(0, 0, 0, 128);
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285 context->style.window.fixed_background = nk_style_item_color(nk_rgba(0, 0, 0, 128));
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286 current_view = view_pause;
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287 current_system->request_exit(current_system);
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288 }
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289
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290 static uint8_t active;
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291 uint8_t is_nuklear_active(void)
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292 {
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293 return active;
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294 }
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295
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296 uint8_t is_nuklear_available(void)
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297 {
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298 if (!render_has_gl()) {
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299 //currently no fallback if GL2 unavailable
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300 return 0;
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301 }
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302 char *style = tern_find_path(config, "ui\0style\0", TVAL_PTR).ptrval;
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303 if (!style) {
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304 return 1;
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305 }
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306 return strcmp(style, "rom") != 0;
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307 }
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308
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309 void blastem_nuklear_init(uint8_t file_loaded)
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310 {
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311 context = nk_sdl_init(render_get_window());
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312
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313 struct nk_font_atlas *atlas;
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314 nk_sdl_font_stash_begin(&atlas);
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315 char *font = default_font_path();
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316 if (!font) {
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317 fatal_error("Failed to find default font path\n");
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318 }
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319 struct nk_font *def_font = nk_font_atlas_add_from_file(atlas, font, 30, NULL);
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320 nk_sdl_font_stash_end();
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321 nk_style_set_font(context, &def_font->handle);
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322 current_view = file_loaded ? view_play : view_menu;
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323 render_set_ui_render_fun(blastem_nuklear_render);
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324 render_set_event_handler(handle_event);
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325 render_set_gl_context_handlers(context_destroyed, context_created);
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326 active = 1;
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327 ui_idle_loop();
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328 }