From ecf0289776569cf9cf00accbc7cbcfe3ffa9a724 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Fri, 4 Apr 2014 12:27:47 +0200
Subject: Add sdl_renderer:get_draw_color/1

---
 c_src/esdl2.h        |  1 +
 c_src/sdl_renderer.c | 30 ++++++++++++++++++++++++++++++
 src/esdl2.erl        |  4 ++++
 src/sdl_renderer.erl |  8 ++++++++
 4 files changed, 43 insertions(+)

diff --git a/c_src/esdl2.h b/c_src/esdl2.h
index 1f0ee3c..f0e54c9 100644
--- a/c_src/esdl2.h
+++ b/c_src/esdl2.h
@@ -151,6 +151,7 @@
 	F(create_renderer, 3) \
 	F(get_num_render_drivers, 0) \
 	F(get_render_draw_blend_mode, 1) \
+	F(get_render_draw_color, 1) \
 	F(render_clear, 1) \
 	F(render_copy, 4) \
 	F(render_present, 1) \
diff --git a/c_src/sdl_renderer.c b/c_src/sdl_renderer.c
index 5f90f14..7787a3c 100644
--- a/c_src/sdl_renderer.c
+++ b/c_src/sdl_renderer.c
@@ -133,6 +133,36 @@ NIF_FUNCTION(get_render_draw_blend_mode)
 		NIF_RES_GET(Renderer, renderer_res));
 }
 
+// get_render_draw_color
+
+NIF_CALL_HANDLER(thread_get_render_draw_color)
+{
+	Uint8 r, g, b, a;
+
+	if (SDL_GetRenderDrawColor(args[0], &r, &g, &b, &a))
+		return sdl_error_tuple(env);
+
+	return enif_make_tuple2(env,
+		atom_ok,
+		enif_make_tuple4(env,
+			enif_make_uint(env, r),
+			enif_make_uint(env, g),
+			enif_make_uint(env, b),
+			enif_make_uint(env, a)
+		)
+	);
+}
+
+NIF_FUNCTION(get_render_draw_color)
+{
+	void* renderer_res;
+
+	BADARG_IF(!enif_get_resource(env, argv[0], res_Renderer, &renderer_res));
+
+	return nif_thread_call(env, thread_get_render_draw_color, 1,
+		NIF_RES_GET(Renderer, renderer_res));
+}
+
 // render_clear
 
 NIF_CALL_HANDLER(thread_render_clear)
diff --git a/src/esdl2.erl b/src/esdl2.erl
index add7453..a64ee4c 100644
--- a/src/esdl2.erl
+++ b/src/esdl2.erl
@@ -56,6 +56,7 @@
 -export([create_renderer/3]).
 -export([get_num_render_drivers/0]).
 -export([get_render_draw_blend_mode/1]).
+-export([get_render_draw_color/1]).
 -export([render_clear/1]).
 -export([render_copy/4]).
 -export([render_present/1]).
@@ -215,6 +216,9 @@ get_num_render_drivers() ->
 get_render_draw_blend_mode(_) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
+get_render_draw_color(_) ->
+	erlang:nif_error({not_loaded, ?MODULE}).
+
 render_clear(_) ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
diff --git a/src/sdl_renderer.erl b/src/sdl_renderer.erl
index 18c368c..01bc314 100644
--- a/src/sdl_renderer.erl
+++ b/src/sdl_renderer.erl
@@ -17,6 +17,7 @@
 -export([create/3]).
 -export([count_drivers/0]).
 -export([get_draw_blend_mode/1]).
+-export([get_draw_color/1]).
 -export([clear/1]).
 -export([copy/2]).
 -export([copy/4]).
@@ -39,6 +40,13 @@ get_draw_blend_mode(Renderer) ->
 		Mode
 	end.
 
+get_draw_color(Renderer) ->
+	esdl2:get_render_draw_color(Renderer),
+	receive {'_nif_thread_ret_', Ret} ->
+		{ok, Mode} = Ret,
+		Mode
+	end.
+
 clear(Renderer) ->
 	esdl2:render_clear(Renderer),
 	receive {'_nif_thread_ret_', Ret} -> Ret end.
-- 
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