From 9c65624afcae78d5dfa8edc71eeac9f5c9c7d5fe Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sun, 27 Jul 2014 13:14:30 -0400
Subject: [PATCH] Window: add resize()

---
 src/Window.cc | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/Window.cc b/src/Window.cc
index 7db79bf..4ccdd28 100644
--- a/src/Window.cc
+++ b/src/Window.cc
@@ -14,6 +14,7 @@ typedef struct
 } Window;
 
 static VALUE ruby_class;
+static VALUE window_instance;
 
 static void Init_SDL()
 {
@@ -117,10 +118,22 @@ static VALUE Window_new(VALUE klass)
 
     VALUE rv = Data_Wrap_Struct(ruby_class, NULL, Window_free, window);
     rb_obj_call_init(rv, 0, NULL);
+    /* TODO: remove window_instance and map SDL_Window * to Window Ruby object
+     * to support multiple windows. */
+    window_instance = rv;
 
     return rv;
 }
 
+static void resize()
+{
+    GLint viewport_size[2];
+    Window * window;
+    Data_Get_Struct(window_instance, Window, window);
+    SDL_GetWindowSize(window->sdl_window, &viewport_size[0], &viewport_size[1]);
+    glViewport(0, 0, viewport_size[0], viewport_size[1]);
+}
+
 static VALUE Window_event_loop(VALUE klass)
 {
     SDL_Event event;
@@ -142,7 +155,7 @@ static VALUE Window_event_loop(VALUE klass)
 //                draw();
                 break;
             case SDL_WINDOWEVENT_RESIZED:
-//                resize();
+                resize();
 //                draw();
                 break;
             }