diff options
Diffstat (limited to 'nuklear_ui/blastem_nuklear.c')
| -rw-r--r-- | nuklear_ui/blastem_nuklear.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/nuklear_ui/blastem_nuklear.c b/nuklear_ui/blastem_nuklear.c new file mode 100644 index 0000000..9085b38 --- /dev/null +++ b/nuklear_ui/blastem_nuklear.c @@ -0,0 +1,158 @@ +#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; + +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, 300, 1); + if (nk_button_label(context, "Open")) { + if (entries[selected_entry].is_dir) { + char *old = current_path; + char const *pieces[] = {old, PATH_SEP, entries[selected_entry].name}; + current_path = alloc_concat_m(3, pieces); + free(old); + free_dir_list(entries, num_entries); + entries = NULL; + } else { + //TODO: load ROM + 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)) { + current_view = items[i].next_view; + if (!current_view) { + exit(0); + } + } + } + nk_layout_space_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); + glViewport(0, 0, render_width(), render_height()); +/* glClear(GL_COLOR_BUFFER_BIT); + glClearColor(0, 0, 0, 0);*/ + nk_sdl_render(NK_ANTI_ALIASING_ON, 512 * 1024, 128 * 1024); + //SDL_GL_SwapWindow(render_get_window()); + 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); +} + +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); + idle_loop(); +} |