retroleaftileset.cpp

s60 二维动画教程 含源码及 s60 二维动画教程 含源码及

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//
// RetroLeafTileset.cpp
//
// Copyright (c) 2003 Nokia Mobile Phones Ltd.  All rights reserved.
//
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#include <e32math.h>
#include "RenderableFactory.h"
#include "BitmapTile.h"
#include "RetroLeafTileset.h"

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CRetroLeafTileset* CRetroLeafTileset::NewL(CFbsBitmap& aSourceImage)
	{
	CRetroLeafTileset* self = new(ELeave) CRetroLeafTileset();
	CleanupStack::PushL(self);
	self->ConstructL(aSourceImage);
	CleanupStack::Pop();
	return self;
	}

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CRetroLeafTileset::CRetroLeafTileset()
	{
	}

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CRetroLeafTileset::~CRetroLeafTileset()
	{
	}

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void CRetroLeafTileset::ConstructL(CFbsBitmap& aSourceImage)
    {
	AllocRenderablesL(8);

	iSize.SetSize(32,32);
	iTileLogWidth = 5;
	iTileLogHeight = 5;

	// Create image, device and context (only needed briefly):
	CFbsBitmap* image = new (ELeave) CFbsBitmap();
	CleanupStack::PushL(image);
	User::LeaveIfError( image->Create(iSize, EColor4K ) );
	CFbsBitmapDevice* device = CFbsBitmapDevice::NewL(image);
	CleanupStack::PushL(device);
	CFbsBitGc* gc;
	User::LeaveIfError(device->CreateContext(gc));
	gc->SetBrushColor(TRgb(0,0,0));

	// Create ship frames:
	TInt tile;
	for (tile = 0 ; tile < 8 ; tile++)
	{
		gc->Clear();
		BuildTile(aSourceImage,tile,gc);
		AddRenderable(CBitmapTile::NewL(*image));
	}

	// Destroy context, device and image;
	delete gc;
	CleanupStack::PopAndDestroy(2);
	}

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void CRetroLeafTileset::BuildTile(CFbsBitmap& aSourceImage,TInt frame_no,CFbsBitGc* aGc)
{
	// Convert frame to x-coord:
	TInt frame_x = frame_no << 5;

	aGc->BitBlt(TPoint(0,0),&aSourceImage,TRect(TPoint(frame_x,0),iSize));
}

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