# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1511376867 28800
# Node ID 0646ae0987c3d5f0dc1a1a752348b2ba91d0eb55
# Parent  afa3fbb76bffb302c750849f73a53b52f3afd3a8
Fix UI rendering in fullscreen and wome initial work on the "pause" menu

diff -r afa3fbb76bff -r 0646ae0987c3 nuklear_ui/blastem_nuklear.c
--- a/nuklear_ui/blastem_nuklear.c	Tue Nov 21 23:11:11 2017 -0800
+++ b/nuklear_ui/blastem_nuklear.c	Wed Nov 22 10:54:27 2017 -0800
@@ -14,6 +14,7 @@
 
 typedef void (*view_fun)(struct nk_context *);
 static view_fun current_view;
+static view_fun previous_view;
 
 void view_play(struct nk_context *context)
 {
@@ -46,7 +47,10 @@
 			}
 			nk_group_end(context);
 		}
-		nk_layout_row_static(context, 52, 300, 1);
+		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) {
@@ -91,6 +95,7 @@
 	{
 		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);
@@ -100,6 +105,38 @@
 	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[] = {
@@ -119,11 +156,7 @@
 {
 	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);
 }
 
@@ -139,6 +172,24 @@
 	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 blastem_nuklear_init(uint8_t file_loaded)
 {
 	context = nk_sdl_init(render_get_window());
@@ -155,5 +206,6 @@
 	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);
 	idle_loop();
 }
diff -r afa3fbb76bff -r 0646ae0987c3 render_sdl.c
--- a/render_sdl.c	Tue Nov 21 23:11:11 2017 -0800
+++ b/render_sdl.c	Wed Nov 22 10:54:27 2017 -0800
@@ -696,7 +696,7 @@
 {
 #ifndef DISABLE_OPENGL
 	if (render_gl) {
-		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+		glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
 		glClear(GL_COLOR_BUFFER_BIT);
 
 		glUseProgram(program);
@@ -997,6 +997,13 @@
 	drag_drop_handler = handler;
 }
 
+static ui_render_fun on_context_destroyed, on_context_created;
+void render_set_gl_context_handlers(ui_render_fun destroy, ui_render_fun create)
+{
+	on_context_destroyed = destroy;
+	on_context_created = create;
+}
+
 static event_handler custom_event_handler;
 void render_set_event_handler(event_handler handler)
 {
@@ -1070,9 +1077,15 @@
 			update_aspect();
 #ifndef DISABLE_OPENGL
 			if (render_gl) {
+				if (on_context_destroyed) {
+					on_context_destroyed();
+				}
 				SDL_GL_DeleteContext(main_context);
 				main_context = SDL_GL_CreateContext(main_window);
 				gl_setup();
+				if (on_context_created) {
+					on_context_created();
+				}
 			}
 #endif
 			break;
diff -r afa3fbb76bff -r 0646ae0987c3 render_sdl.h
--- a/render_sdl.h	Tue Nov 21 23:11:11 2017 -0800
+++ b/render_sdl.h	Wed Nov 22 10:54:27 2017 -0800
@@ -9,5 +9,6 @@
 void render_update_display(void);
 void render_set_ui_render_fun(ui_render_fun);
 void render_set_event_handler(event_handler handler);
+void render_set_gl_context_handlers(ui_render_fun destroy, ui_render_fun create);
 
 #endif //RENDER_SDL_H_