Add API to access battery power state

Done:
- X11, server (tested)
- Windows (developed, would be nice to retest)
- OSX (not tested)
Prepared (not developed):
- Android (code is here, but may not compile)
- iphone
- winrt
- bb10
- haiku
- javascript

2 files changed, 22 insertions, 0 deletions

diff --git a/platform/uwp/os_uwp.cpp b/platform/uwp/os_uwp.cpp
index 61b8a1c240..f2a99fe62c 100644
--- a/platform/uwp/os_uwp.cpp
+++ b/platform/uwp/os_uwp.cpp
@@ -292,6 +292,8 @@ void OSUWP::initialize(const VideoMode& p_desired,int p_video_driver,int p_audio
 		ERR_PRINT("Initializing audio failed.");
 	}
 
+	power_manager = memnew ( PowerWinRT );
+
 	managed_object->update_clipboard();
 
 	Clipboard::ContentChanged += ref new EventHandler<Platform::Object^>(managed_object, &ManagedType::on_clipboard_changed);
@@ -919,6 +921,18 @@ String OSUWP::get_data_dir() const {
 	return String(data_folder->Path->Data()).replace("\\", "/");
 }
 
+PowerState OSWinrt::get_power_state() {
+	return power_manager->get_power_state();
+}
+
+int OSWinrt::get_power_seconds_left() {
+	return power_manager->get_power_seconds_left();
+}
+
+int OSWinrt::get_power_percent_left() {
+	return power_manager->get_power_percent_left();
+}
+
 
 OSUWP::OSUWP() {
 
diff --git a/platform/uwp/os_uwp.h b/platform/uwp/os_uwp.h
index f65aa2d8d9..72cc8a7854 100644
--- a/platform/uwp/os_uwp.h
+++ b/platform/uwp/os_uwp.h
@@ -42,12 +42,14 @@
 #include "core/ustring.h"
 #include "main/input_default.h"
 #include "joypad_uwp.h"
+#include "power_winrt.h"
 
 #include <windows.h>
 #include <io.h>
 #include <fcntl.h>
 #include <stdio.h>
 
+
 /**
 	@author Juan Linietsky <reduzio@gmail.com>
 */
@@ -111,6 +113,8 @@ private:
 
 	AudioDriverXAudio2 audio_driver;
 
+	PowerWinRT *power_manager;
+
 	MouseMode mouse_mode;
 	bool alt_mem;
 	bool gr_mem;
@@ -260,6 +264,10 @@ public:
 	virtual bool get_swap_ok_cancel() { return true; }
 
 	void input_event(InputEvent &p_event);
+	
+	virtual PowerState get_power_state();
+	virtual int get_power_seconds_left();
+	virtual int get_power_percent_left();
 
 	void queue_key_event(KeyEvent &p_event);