axmol/cocos/platform/winrt/CCDevice.cpp

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Copyright (c) 2013-2014 Chukong Technologies Inc.

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#include "platform/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 "platform/CCStdC.h"

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

NS_CC_BEGIN

CCFreeTypeFont sFT;

int Device::getDPI()
{
#if CC_TARGET_PLATFORM == CC_PLATFORM_WP8
	static const float dipsPerInch = 96.0f;
	return floor(DisplayProperties::LogicalDpi / dipsPerInch + 0.5f); // Round to nearest integer.
#elif defined WP8_SHADER_COMPILER
    return 0;
#else
    return cocos2d::GLViewImpl::sharedOpenGLView()->GetDPI();
#endif
}

static Accelerometer^ sAccelerometer = nullptr;


void Device::setAccelerometerEnabled(bool isEnabled)
{
#ifndef WP8_SHADER_COMPILER
    static Windows::Foundation::EventRegistrationToken sToken;
    static bool sEnabled = false;

    // we always need to reset the accelerometer
    if (sAccelerometer)
    {
        sAccelerometer->ReadingChanged -= sToken;
        sAccelerometer = nullptr;
        sEnabled = false;
    }

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

        if(sAccelerometer == nullptr)
        {
            // It's not a friendly experience and may cause crash.
            //MessageBox("This device does not have an accelerometer.","Alert");
            log("This device does not have an accelerometer.");
            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;

            auto orientation = GLViewImpl::sharedOpenGLView()->getDeviceOrientation();

#if (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
            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;
            }
#else // Windows Store App
            // from http://msdn.microsoft.com/en-us/library/windows/apps/dn440593
            switch (orientation)
            {
            case DisplayOrientations::Portrait:
                acc.x = reading->AccelerationY;
                acc.y = -reading->AccelerationX;
                break;

            case DisplayOrientations::Landscape:
                acc.x = reading->AccelerationX;
                acc.y = reading->AccelerationY;
                break;

            case DisplayOrientations::PortraitFlipped:
                acc.x = -reading->AccelerationY;
                acc.y = reading->AccelerationX;
                break;

            case DisplayOrientations::LandscapeFlipped:
                acc.x = -reading->AccelerationX;
                acc.y = -reading->AccelerationY;
                break;

            default:
                acc.x = reading->AccelerationY;
                acc.y = -reading->AccelerationX;
                break;
            }
#endif
	        std::shared_ptr<cocos2d::InputEvent> event(new AccelerometerEvent(acc));
            cocos2d::GLViewImpl::sharedOpenGLView()->QueueEvent(event);
		});
	}
#endif
}

void Device::setAccelerometerInterval(float interval)
{
    if (sAccelerometer)
    {
        try {
            int minInterval = sAccelerometer->MinimumReportInterval;
            int reqInterval = (int) interval;
            sAccelerometer->ReportInterval = reqInterval < minInterval ? minInterval : reqInterval;
        }
        catch (Platform::COMException^)
        {
            CCLOG("Device::setAccelerometerInterval not supported on this device");
        }
    }
    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;
}

void Device::setKeepScreenOn(bool value)
{
}

NS_CC_END

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