axmol/cocos/platform/winrt/CCDevice.cpp

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Copyright (c) 2013-2014 Chukong Technologies Inc.

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#include "base/CCPlatformConfig.h"
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) ||  (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) 

#include "cocos2d.h"
#include "platform/CCDevice.h"
#include "platform/CCFileUtils.h"
#include "platform/winrt/CCFreeTypeFont.h"
#include "CCStdC.h"

using namespace Windows::Graphics::Display;
using namespace Windows::Devices::Sensors;
using namespace Windows::Foundation;

NS_CC_BEGIN

CCFreeTypeFont sFT;

int Device::getDPI()
{
	static const float dipsPerInch = 96.0f;
	return floor(DisplayProperties::LogicalDpi / dipsPerInch + 0.5f); // Round to nearest integer.
}

static Accelerometer^ sAccelerometer = nullptr;


void Device::setAccelerometerEnabled(bool isEnabled)
{
    static Windows::Foundation::EventRegistrationToken sToken;
    static bool sEnabled = false;

	if (isEnabled)
	{
        sAccelerometer = Accelerometer::GetDefault();

        if(sAccelerometer == nullptr)
        {
	        MessageBox("This device does not have an accelerometer.","Alert");
            return;
        }

		setAccelerometerInterval(0.0f);
        sEnabled = true;

        sToken = sAccelerometer->ReadingChanged += ref new TypedEventHandler
			<Accelerometer^,AccelerometerReadingChangedEventArgs^>
			([](Accelerometer^ a, AccelerometerReadingChangedEventArgs^ e)
		{
            if (!sEnabled)
            {
                return;
            }

			AccelerometerReading^ reading = e->Reading;
            cocos2d::Acceleration acc;
			acc.x = reading->AccelerationX;
			acc.y = reading->AccelerationY;
			acc.z = reading->AccelerationZ;
            acc.timestamp = 0;

#if CC_TARGET_PLATFORM == CC_PLATFORM_WP8
            auto orientation = GLViewImpl::sharedOpenGLView()->getDeviceOrientation();

            switch (orientation)
            {
            case DisplayOrientations::Portrait:
 				acc.x = reading->AccelerationX;
				acc.y = reading->AccelerationY;
                break;
                
            case DisplayOrientations::Landscape:
				acc.x = -reading->AccelerationY;
				acc.y = reading->AccelerationX;
                break;
                
            case DisplayOrientations::PortraitFlipped:
				acc.x = -reading->AccelerationX;
				acc.y = reading->AccelerationY;
                break;
                
            case DisplayOrientations::LandscapeFlipped:
 				acc.x = reading->AccelerationY;
				acc.y = reading->AccelerationX;
                    break;
              
            default:
  				acc.x = reading->AccelerationX;
				acc.y = reading->AccelerationY;
                break;
            }
#endif
	        std::shared_ptr<cocos2d::InputEvent> event(new AccelerometerEvent(acc));
            cocos2d::GLViewImpl::sharedOpenGLView()->QueueEvent(event);
		});
	}
	else
	{
        if (sAccelerometer)
        {
            sAccelerometer->ReadingChanged -= sToken;
            sAccelerometer = nullptr;
        }

        sEnabled = false;
	}

}

void Device::setAccelerometerInterval(float interval)
{
    if (sAccelerometer)
    {
        int minInterval = sAccelerometer->MinimumReportInterval;
	    int reqInterval = (int) interval;
        sAccelerometer->ReportInterval = reqInterval < minInterval ? minInterval : reqInterval;
    }
    else
    {
        CCLOG("Device::setAccelerometerInterval: accelerometer not enabled.");
    }
}



Data Device::getTextureDataForText(const char * text, const FontDefinition& textDefinition, TextAlign align, int &width, int &height, bool& hasPremultipliedAlpha)
{
    Data ret;
    ssize_t dataLen;

    unsigned char* data = sFT.initWithString(text, textDefinition, align, width, height, dataLen);

    if (data)
    {
        ret.fastSet(data, dataLen);
        hasPremultipliedAlpha = false;
    }

    return ret;
}

NS_CC_END

#endif // (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT) ||  (CC_TARGET_PLATFORM == CC_PLATFORM_WP8)