imagehelper.h

手机s60第三版动画编程相关

/*
 ============================================================================
 Name		: ImageHelper.h
 Author	  : 
 Version	 : 1.0
 Copyright   : Your copyright notice
 Description : CImageHelper declaration
 ============================================================================
 */

#ifndef IMAGEHELPER_H
#define IMAGEHELPER_H

#include <e32base.h>	// For CActive, link against: euser.lib
#include <e32std.h>		// For RTimer, link against: euser.lib
#include <f32file.h>
#include <fbs.h>
#include <ImageConversion.h>

class CImageHelper : public CActive
	{
public:
	// Cancel and destroy
	~CImageHelper();

	// Two-phased constructor.
	static CImageHelper* NewL(RFs& aFs);

	// Two-phased constructor.
	static CImageHelper* NewLC(RFs& aFs);

public:
	void LoadPngImageL(const TDesC& aFileName, CFbsBitmap& aBitmap, CFbsBitmap& aBitmapMask);
	
private:
	// C++ constructor
	CImageHelper(RFs& aFs);

	// Second-phase constructor
	void ConstructL();

private:
	// From CActive
	// Handle completion
	void RunL();

	// How to cancel me
	void DoCancel();

	// Override to handle leaves from RunL(). Default implementation causes
	// the active scheduler to panic.
	TInt RunError(TInt aError);

private:
	RFs& iFs;
	CActiveSchedulerWait* iActiveSchedulerWait;
	CImageDecoder* iImgDecoder;

	};

#endif // IMAGEHELPER_H