From dd6f7c6bbfb27d26f432b64e66d41f3b58db944c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Thu, 3 Apr 2014 16:50:10 +0200
Subject: Add sdl_window:set_brightness/2

---
 c_src/esdl2.h      |  1 +
 c_src/sdl_window.c | 30 ++++++++++++++++++++++++++++++
 src/esdl2.erl      |  4 ++++
 src/sdl_window.erl |  5 +++++
 4 files changed, 40 insertions(+)

diff --git a/c_src/esdl2.h b/c_src/esdl2.h
index 55b9a2b..2eb447b 100644
--- a/c_src/esdl2.h
+++ b/c_src/esdl2.h
@@ -177,6 +177,7 @@
 	F(raise_window, 1) \
 	F(restore_window, 1) \
 	F(set_window_bordered, 2) \
+	F(set_window_brightness, 2) \
 
 // Generated declarations for the NIF.
 
diff --git a/c_src/sdl_window.c b/c_src/sdl_window.c
index adaa9eb..b8e8711 100644
--- a/c_src/sdl_window.c
+++ b/c_src/sdl_window.c
@@ -455,3 +455,33 @@ NIF_FUNCTION(set_window_bordered)
 	return nif_thread_cast(env, thread_set_window_bordered, 2,
 		NIF_RES_GET(Window, window_res), b);
 }
+
+// set_window_brightness
+
+NIF_CALL_HANDLER(thread_set_window_brightness)
+{
+	int ret = SDL_SetWindowBrightness(args[0], *((double*)args[1]));
+
+	enif_free(args[1]);
+
+	if (ret != 0)
+		return sdl_error_tuple(env);
+
+	return atom_ok;
+}
+
+NIF_FUNCTION(set_window_brightness)
+{
+	void* window_res;
+	double f;
+	double *fp;
+
+	BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
+	BADARG_IF(!enif_get_double(env, argv[1], &f));
+
+	fp = (double*)enif_alloc(sizeof(double));
+	*fp = f;
+
+	return nif_thread_call(env, thread_set_window_brightness, 2,
+		NIF_RES_GET(Window, window_res), fp);
+}
diff --git a/src/esdl2.erl b/src/esdl2.erl
index 581248d..e85c698 100644
--- a/src/esdl2.erl
+++ b/src/esdl2.erl
@@ -89,6 +89,7 @@
 -export([raise_window/1]).
 -export([restore_window/1]).
 -export([set_window_bordered/2]).
+-export([set_window_brightness/2]).
 
 %% @todo We probably want to accept an env variable or somthing for the location.
 -on_load(on_load/0).
@@ -285,3 +286,6 @@ restore_window(_) ->
 
 set_window_bordered(_, _) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
+
+set_window_brightness(_, _) ->
+	erlang:nif_error({not_loaded, ?MODULE}).
diff --git a/src/sdl_window.erl b/src/sdl_window.erl
index ed9a754..113de6b 100644
--- a/src/sdl_window.erl
+++ b/src/sdl_window.erl
@@ -32,6 +32,7 @@
 -export([raise/1]).
 -export([restore/1]).
 -export([set_bordered/2]).
+-export([set_brightness/2]).
 
 create(Title, X, Y, W, H, Flags) ->
 	esdl2:create_window(Title, X, Y, W, H, Flags),
@@ -101,3 +102,7 @@ restore(Window) ->
 
 set_bordered(Window, Bordered) ->
 	esdl2:set_window_bordered(Window, Bordered).
+
+set_brightness(Window, Brightness) ->
+	esdl2:set_window_brightness(Window, Brightness),
+	receive {'_nif_thread_ret_', Ret} -> Ret end.
-- 
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