/*=====================================================================

    Copyright © 2007 Nokia Corporation. All rights reserved.

======================================================================*/

// ImageSaver.cpp: implementation of the CImageLoader class.
//
//////////////////////////////////////////////////////////////////////

#include <eikenv.h>				// for CEikonEnv - "Eikon Environment"
#include <PathInfo.h>
#include <ImageConversion.h>

#include "ImageLoader.h"

_LIT8(KMimeType,"image/png");

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

void CImageLoader::ConstructL()
{
}


CImageLoader* CImageLoader::NewL(TChar tDrive)
{
    CImageLoader* self = new (ELeave) CImageLoader(tDrive);

    CleanupStack::PushL( self );
    self->ConstructL();
    CleanupStack::Pop();

    return self;
}


CImageLoader::CImageLoader(TChar tDrive):CActive( CActive::EPriorityStandard )
{
    CActiveScheduler::Add( this );

	pImageDecoder = NULL;
	iDrive = tDrive;
}


CImageLoader::~CImageLoader()
{
	if (pImageDecoder)
		delete pImageDecoder;
	pImageDecoder = NULL;

//	delete iImagePath;
}


//functions
void CImageLoader::DoCancel()    
{
	//in case image saving is cancelled for whatever reason
	pImageDecoder->Cancel();

	DeleteDecoder();
}


void CImageLoader::RunL()
{
	if (iStatus != KErrNone) {
		TRequestStatus* s=&iStatus;
		User::RequestComplete(s, KErrNone);

		SetActive();
		return;
	}

	DeleteDecoder();
}


void CImageLoader::RunError()
{
	RunL();	//cleanup
}


void CImageLoader::DeleteDecoder()
{
	if (pImageDecoder)
		delete pImageDecoder;
	pImageDecoder = NULL;
}


void CImageLoader::LoadImage(const TDesC &aFilename, CFbsBitmap *pImg)
{
	RFs fSystem = CEikonEnv::Static()->FsSession();

#if defined( __WINS__ )
    _LIT(SpriteFilePath, "%c:\\pictures\\");  // Path for emulator build
    iFilename.Format( SpriteFilePath, iDrive );
	iFilename.Append(aFilename);
#else
//    _LIT(KFileName, "%c:\\system\\apps\\Track\\"); // Path for HW release 
    _LIT(SpriteFilePath, "%c:\\"); // Path for HW release 
    iFilename.Format( SpriteFilePath, (char)iDrive );
	iFilename.Append(aFilename);
#endif

	iNewFileName.Copy(iFilename);

	if (!pImageDecoder) 
		pImageDecoder = CImageDecoder::FileNewL(fSystem, iNewFileName, KMimeType, CImageDecoder::EOptionAlwaysThread );

	//if not busy, start to do the conversion
	if ( !IsActive() ) {
		pImageDecoder->Convert( &iStatus, *pImg );
		SetActive();

		//loop until the encoding is done
		do {
//			SleepForSecs(1);
			SleepForMicrosecs(1);
		} while (iStatus != KErrNone);
    }
}



void CImageLoader::SleepForMicrosecs(TInt iMicroSecsToSleep)
{
	TTime tNow;
	tNow.HomeTime();

	TTimeIntervalMicroSeconds tMicroSecsToSleep;
	tMicroSecsToSleep = iMicroSecsToSleep;

	//sleep for iMicroSecsToSleep
	User::At(tNow + tMicroSecsToSleep);

}