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#define NK_IMPLEMENTATION
#define NK_SDL_GLES2_IMPLEMENTATION
#include <stdlib.h>
#include "blastem_nuklear.h"
#include "font.h"
#include "../render.h"
#include "../render_sdl.h"
#include "../util.h"
#include "../paths.h"
#include "../blastem.h"
static struct nk_context *context;
typedef void (*view_fun)(struct nk_context *);
static view_fun current_view;
static view_fun previous_view;
void view_play(struct nk_context *context)
{
}
void view_load(struct nk_context *context)
{
static char *current_path;
static dir_entry *entries;
static size_t num_entries;
static uint32_t selected_entry;
get_initial_browse_path(¤t_path);
if (!entries) {
entries = get_dir_list(current_path, &num_entries);
}
uint32_t width = render_width();
uint32_t height = render_height();
if (nk_begin(context, "Load ROM", nk_rect(0, 0, width, height), 0)) {
nk_layout_row_static(context, height - 100, width - 60, 1);
if (nk_group_begin(context, "Select ROM", NK_WINDOW_BORDER | NK_WINDOW_TITLE)) {
nk_layout_row_static(context, 28, width-100, 1);
for (uint32_t i = 0; i < num_entries; i++)
{
int selected = i == selected_entry;
nk_selectable_label(context, entries[i].name, NK_TEXT_ALIGN_LEFT, &selected);
if (selected) {
selected_entry = i;
}
}
nk_group_end(context);
}
nk_layout_row_static(context, 52, width > 600 ? 300 : width / 2, 2);
if (nk_button_label(context, "Back")) {
current_view = previous_view;
}
if (nk_button_label(context, "Open")) {
char const *pieces[] = {current_path, PATH_SEP, entries[selected_entry].name};
if (entries[selected_entry].is_dir) {
char *old = current_path;
current_path = alloc_concat_m(3, pieces);
free(old);
free_dir_list(entries, num_entries);
entries = NULL;
} else {
current_system->next_rom = alloc_concat_m(3, pieces);
current_system->request_exit(current_system);
current_view = view_play;
}
}
nk_end(context);
}
}
void view_about(struct nk_context *context)
{
}
typedef struct {
const char *title;
view_fun next_view;
} menu_item;
static void menu(struct nk_context *context, uint32_t num_entries, const menu_item *items)
{
const uint32_t button_height = 52;
const uint32_t ideal_button_width = 300;
const uint32_t button_space = 6;
uint32_t width = render_width();
uint32_t height = render_height();
uint32_t top = height/2 - (button_height * num_entries)/2;
uint32_t button_width = width > ideal_button_width ? ideal_button_width : width;
uint32_t left = width/2 - button_width/2;
nk_layout_space_begin(context, NK_STATIC, top + button_height * num_entries, num_entries);
for (uint32_t i = 0; i < num_entries; i++)
{
nk_layout_space_push(context, nk_rect(left, top + i * button_height, button_width, button_height-button_space));
if (nk_button_label(context, items[i].title)) {
previous_view = current_view;
current_view = items[i].next_view;
if (!current_view) {
exit(0);
}
}
}
nk_layout_space_end(context);
}
void view_choose_state(struct nk_context *context, uint8_t is_load)
{
}
void view_save_state(struct nk_context *context)
{
view_choose_state(context, 0);
}
void view_load_state(struct nk_context *context)
{
view_choose_state(context, 1);
}
void view_pause(struct nk_context *context)
{
static menu_item items[] = {
{"Resume", view_play},
{"Load ROM", view_load},
{"Save State", view_save_state},
{"Load State", view_load_state},
{"Exit", NULL}
};
const uint32_t num_buttons = 3;
if (nk_begin(context, "Main Menu", nk_rect(0, 0, render_width(), render_height()), 0)) {
menu(context, sizeof(items)/sizeof(*items), items);
nk_end(context);
}
}
void view_menu(struct nk_context *context)
{
static menu_item items[] = {
{"Load ROM", view_load},
{"About", view_about},
{"Exit", NULL}
};
const uint32_t num_buttons = 3;
if (nk_begin(context, "Main Menu", nk_rect(0, 0, render_width(), render_height()), 0)) {
menu(context, sizeof(items)/sizeof(*items), items);
nk_end(context);
}
}
void blastem_nuklear_render(void)
{
nk_input_end(context);
current_view(context);
nk_sdl_render(NK_ANTI_ALIASING_ON, 512 * 1024, 128 * 1024);
nk_input_begin(context);
}
void idle_loop(void)
{
while (current_view != view_play)
{
render_update_display();
}
}
static void handle_event(SDL_Event *event)
{
nk_sdl_handle_event(event);
}
static void context_destroyed(void)
{
nk_sdl_device_destroy();
}
static void context_created(void)
{
nk_sdl_device_create();
struct nk_font_atlas *atlas;
nk_sdl_font_stash_begin(&atlas);
char *font = default_font_path();
if (!font) {
fatal_error("Failed to find default font path\n");
}
struct nk_font *def_font = nk_font_atlas_add_from_file(atlas, font, 30, NULL);
nk_sdl_font_stash_end();
nk_style_set_font(context, &def_font->handle);
}
void show_pause_menu(void)
{
context->style.window.background = nk_rgba(0, 0, 0, 128);
context->style.window.fixed_background = nk_style_item_color(nk_rgba(0, 0, 0, 128));
current_view = view_pause;
}
static uint8_t active;
uint8_t is_nuklear_active(void)
{
return active;
}
void blastem_nuklear_init(uint8_t file_loaded)
{
context = nk_sdl_init(render_get_window());
struct nk_font_atlas *atlas;
nk_sdl_font_stash_begin(&atlas);
char *font = default_font_path();
if (!font) {
fatal_error("Failed to find default font path\n");
}
struct nk_font *def_font = nk_font_atlas_add_from_file(atlas, font, 30, NULL);
nk_sdl_font_stash_end();
nk_style_set_font(context, &def_font->handle);
current_view = file_loaded ? view_play : view_menu;
render_set_ui_render_fun(blastem_nuklear_render);
render_set_event_handler(handle_event);
render_set_gl_context_handlers(context_destroyed, context_created);
active = 1;
idle_loop();
}
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