csplash.cpp

Symbian开发提高的一个很好的实例,其实现了一个非常好理解的Symbian游戏开发流程

#include <eikenv.h>

#include "CSplash.h"
#include <images.mbg>


// construct and destruct

// NewL()
CSplash* CSplash::NewL(CWindowGc& aGc, RWindow& aWindow)
{
	CSplash* self = new (ELeave) CSplash(aGc, aWindow);
	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);
	
	return self;
}

CSplash::CSplash(CWindowGc&	aGc, RWindow&	aWindow)	
	: iGc( aGc )
	, iWindow( aWindow )
{}

// ~CSplash()
CSplash::~CSplash()
{
	delete ibitmap;
	ibitmap = NULL;
}

// ConstuctL()
void CSplash::ConstructL()
{
	// load the bitmap from an .mbm file

	_LIT(KPathName, "\\System\\Apps\\Tetris\\images.mbm");
	ibitmap = CEikonEnv::Static()->CreateBitmapL(KPathName, EMbmImagesLogo);

	iCount = -11;
}

///////////////////////////////////////////////////////////////////////

// Other method

// Show()	@return 1	-- keep running		else stop 
TBool CSplash::Draw()
{
	if(iCount == 0)
		User::After(1000000);

	++iCount;

	if(iCount < 11)
	{
		iGc.Activate( iWindow );
		iGc.SetBrushStyle(CGraphicsContext::ESolidBrush);
		iGc.SetBrushColor(KRgbBlack);
		iGc.Clear();
		if(iCount < 0)
			iGc.SetFadingParameters(0,  iCount*25);
		else
			iGc.SetFadingParameters(0, 255 - iCount*25);
		iGc.SetFaded(ETrue);
	
		iGc.BitBlt(TPoint(20, 60), ibitmap);

		iGc.Deactivate();
	}
	else
	{
		User::After(100000);
		iGc.Activate( iWindow );
		iGc.SetFaded(EFalse);
		iGc.Deactivate();
		iCount = -11;
		return 0;
	}

	return 1;
}