Add sdl_power:get_info/0 function to retrieve battery info

4 files changed, 75 insertions, 0 deletions

diff --git a/c_src/esdl2.h b/c_src/esdl2.h
index 80e6406..8024a9d 100644
--- a/c_src/esdl2.h
+++ b/c_src/esdl2.h
@@ -22,6 +22,8 @@
 #define NIF_ATOMS(A) \
 	A(button) \
 	A(caps) \
+	A(charged) \
+	A(charging) \
 	A(close) \
 	A(data) \
 	A(enter) \
@@ -52,7 +54,9 @@
 	A(mouse_up) \
 	A(mouse_wheel) \
 	A(moved) \
+	A(no_battery) \
 	A(num) \
+	A(on_battery) \
 	A(quit) \
 	A(repeat) \
 	A(resized) \
@@ -72,6 +76,7 @@
 	A(timestamp) \
 	A(type) \
 	A(undefined) \
+	A(unknown) \
 	A(w) \
 	A(which) \
 	A(window) \
@@ -110,6 +115,8 @@
 	F(set_clipboard_text, 1) \
 	/* sdl_events */ \
 	F(poll_event, 0) \
+	/* sdl_power */ \
+	F(get_power_info, 0) \
 	/* sdl_renderer */ \
 	F(create_renderer, 3) \
 	F(render_clear, 1) \
diff --git a/c_src/sdl_power.c b/c_src/sdl_power.c
new file mode 100644
index 0000000..e8c20f3
--- /dev/null
+++ b/c_src/sdl_power.c
@@ -0,0 +1,40 @@
+// Copyright (c) 2014, Loïc Hoguin <[email protected]>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+#include "esdl2.h"
+
+#define POWER_STATE_ENUM(E) \
+	E(unknown, SDL_POWERSTATE_UNKNOWN) \
+	E(on_battery, SDL_POWERSTATE_ON_BATTERY) \
+	E(no_battery, SDL_POWERSTATE_NO_BATTERY) \
+	E(charging, SDL_POWERSTATE_CHARGING) \
+	E(charged, SDL_POWERSTATE_CHARGED)
+
+NIF_ENUM_TO_ATOM_FUNCTION(power_state_to_atom, SDL_PowerState, POWER_STATE_ENUM)
+
+// get_power_info
+
+NIF_FUNCTION(get_power_info)
+{
+	SDL_PowerState state;
+	int secs, pct;
+
+	state = SDL_GetPowerInfo(&secs, &pct);
+
+	return enif_make_tuple3(env,
+		power_state_to_atom(state),
+		enif_make_int(env, secs),
+		enif_make_int(env, pct)
+	);
+}
diff --git a/src/esdl2.erl b/src/esdl2.erl
index efe1596..e6f6738 100644
--- a/src/esdl2.erl
+++ b/src/esdl2.erl
@@ -30,6 +30,9 @@
 %% sdl_events
 -export([poll_event/0]).
 
+%% sdl_power
+-export([get_power_info/0]).
+
 %% sdl_renderer
 -export([create_renderer/3]).
 -export([render_clear/1]).
@@ -99,6 +102,11 @@ set_clipboard_text(_) ->
 poll_event() ->
 	erlang:nif_error({not_loaded, ?MODULE}).
 
+%% sdl_power
+
+get_power_info() ->
+	erlang:nif_error({not_loaded, ?MODULE}).
+
 %% sdl_renderer
 
 create_renderer(_, _, _) ->
diff --git a/src/sdl_power.erl b/src/sdl_power.erl
new file mode 100644
index 0000000..c12729d
--- /dev/null
+++ b/src/sdl_power.erl
@@ -0,0 +1,20 @@
+%% Copyright (c) 2014, Loïc Hoguin <[email protected]>
+%%
+%% Permission to use, copy, modify, and/or distribute this software for any
+%% purpose with or without fee is hereby granted, provided that the above
+%% copyright notice and this permission notice appear in all copies.
+%%
+%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+-module(sdl_power).
+
+-export([get_info/0]).
+
+get_info() ->
+	esdl2:get_power_info().