From d0bfb0c2ba3b11ff8bd28f894dd32660d5837b3c Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Thu, 18 Mar 2021 19:46:24 -0400
Subject: main-menu: Handle keyboard events

---
(limited to 'src')

diff --git a/src/main-menu.c b/src/main-menu.c
index 613de69..d934ec4 100644
--- a/src/main-menu.c
+++ b/src/main-menu.c
@@ -26,6 +26,8 @@
 #include "output.h"
 #include "util.h"
 
+static int _db_main_menu_quit;
+
 struct _db_main_menu_button {
 	SDL_Texture                  *texture_text;
 	SDL_Texture                  *texture_over;
@@ -68,17 +70,18 @@ _db_main_menu_text(TTF_Font *font, const char *text, SDL_Color *color,
 }
 
 static void
-_db_main_menu_help(void *user_data __attribute__((__unused__)))
+_db_main_menu_action_help(void *user_data __attribute__((__unused__)))
 {
 }
 
 static void
-_db_main_menu_quit(void *user_data __attribute__((__unused__)))
+_db_main_menu_action_quit(void *user_data __attribute__((__unused__)))
 {
+	_db_main_menu_quit = 1;
 }
 
 static void
-_db_main_menu_game(void *user_data)
+_db_main_menu_action_game(void *user_data)
 {
 	struct db_game *game;
 
@@ -104,6 +107,7 @@ db_main_menu(void)
 	char                         *name_desc;
 	int                           i;
 	struct _db_main_menu_button  *active;
+	SDL_Event                     event;
 
 	games_dir = db_get_games_dir();
 	font_path = db_strcat(db_get_fonts_dir(), "/UbuntuTitling-Bold.ttf");
@@ -176,7 +180,7 @@ db_main_menu(void)
 	}
 	buttons[0]->rect.x = 640 - 16 - buttons[0]->rect.w;
 	buttons[0]->rect.y = 16;
-	buttons[0]->action = &_db_main_menu_help;
+	buttons[0]->action = &_db_main_menu_action_help;
 	buttons[0]->user_data = NULL;
 
 	/* Render quit button */
@@ -197,7 +201,7 @@ db_main_menu(void)
 	}
 	buttons[1]->rect.x = 640 - 16 - buttons[1]->rect.w;
 	buttons[1]->rect.y = 48;
-	buttons[1]->action = &_db_main_menu_quit;
+	buttons[1]->action = &_db_main_menu_action_quit;
 	buttons[1]->user_data = NULL;
 
 	/* Render game buttons */
@@ -241,7 +245,7 @@ db_main_menu(void)
 		buttons[i + 2]->r = buttons[0];
 		buttons[i + 2]->p = buttons[i + 1];
 		buttons[i + 1]->n = buttons[i + 2];
-		buttons[i + 2]->action = &_db_main_menu_game;
+		buttons[i + 2]->action = &_db_main_menu_action_game;
 		buttons[i + 2]->user_data = games[i];
 	}
 	if (n > 0) {
@@ -277,7 +281,59 @@ db_main_menu(void)
 		active = buttons[1];
 	}
 
-	while (1) {
+	_db_main_menu_quit = 0;
+	while (SDL_WaitEvent(&event)) {
+		switch (event.type) {
+			case SDL_QUIT:
+				_db_main_menu_quit = 1;
+				break;
+			case SDL_KEYDOWN:
+				switch (event.key.keysym.sym) {
+					case SDLK_UP:
+						if (active->u != NULL) {
+							active = active->u;
+						}
+						break;
+					case SDLK_DOWN:
+						if (active->d != NULL) {
+							active = active->d;
+						}
+						break;
+					case SDLK_LEFT:
+						if (active->l != NULL) {
+							active = active->l;
+						}
+						break;
+					case SDLK_RIGHT:
+						if (active->r != NULL) {
+							active = active->r;
+						}
+						break;
+					case SDLK_TAB:
+						if (event.key.keysym.mod &
+								KMOD_SHIFT) {
+							if (active->p != NULL) {
+								active =
+								      active->p;
+							}
+						} else {
+							if (active->n != NULL) {
+								active =
+								      active->n;
+							}
+						}
+						break;
+					case SDLK_RETURN:
+						active->action(
+							     active->user_data);
+						break;
+					default:
+						break;
+				}
+				break;
+			default:
+				break;
+		}
 		for (i = 0; i < n + 2; ++i) {
 			if (buttons[i] == active) {
 				SDL_RenderCopy(renderer,
@@ -290,7 +346,9 @@ db_main_menu(void)
 			}
 		}
 		SDL_RenderPresent(renderer);
-		SDL_Delay(1000); break;
+		if (_db_main_menu_quit == 1) {
+			break;
+		}
 	}
 
  err:
--
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