graphicexameffectcontainer.cpp

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/*
============================================================================
 Name        : CGraphicExamEffectContainer from GraphicExamEffectContainer.h
 Author      : hou maoqing
 Version     :
 Copyright   : Copyright (c) Hou maoqing 2008
 Description : Declares container control for application.
============================================================================
*/

// INCLUDE FILES
#include "GraphicExamEffectContainer.h"

#include <eiklabel.h>  // for example label control
#include <akniconutils.h>
#include <aknutils.h>
#include <graphic_svg.mbg> 

_LIT(KSvgPath, "\\resource\\apps\\graphic_svg.mif");
// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------
// CGraphicExamEffectContainer::ConstructL(const TRect& aRect)
// EPOC two phased constructor
// ---------------------------------------------------------
//
void CGraphicExamEffectContainer::ConstructL(const TRect& aRect)
    {
    CreateWindowL();
    SetRect(aRect);
    
    //加载svg矢量图
	TFileName svgFile (KSvgPath);
	User::LeaveIfError (CompleteWithAppPath (svgFile));
	
	iSoundSvg=AknIconUtils::CreateIconL(svgFile,EMbmGraphic_svgSound);
	AknIconUtils::SetSize(iSoundSvg, TSize(50,50), EAspectRatioNotPreserved);
	
    // 创建离屏位图、位图设备、位图设备上下文
    iOffScreenBitmap = new ( ELeave ) CFbsBitmap();
    CleanupStack::PushL( iOffScreenBitmap );
    User::LeaveIfError( iOffScreenBitmap->Create( Rect().Size(),EColor4K ) );
    CleanupStack::Pop();
    
    iOffScreenBitmapDevice = CFbsBitmapDevice::NewL(iOffScreenBitmap );
    iOffScreenBitmapDevice->CreateContext( iOffScreenBitmapGc );

    //位图放缩工具
    m_nScaler=100;
    iScaler = CMdaBitmapScaler::NewL();
    
    ActivateL();
    }

// Destructor
CGraphicExamEffectContainer::~CGraphicExamEffectContainer()
    {
    delete iOffScreenBitmapGc;
	iOffScreenBitmapGc = NULL;

	delete iOffScreenBitmapDevice;
	iOffScreenBitmapDevice = NULL;

	delete iOffScreenBitmap;
	iOffScreenBitmap = NULL;
	
	delete iSoundSvg;
	
	delete iScaler;
    }

// ---------------------------------------------------------
// CGraphicExamEffectContainer::SizeChanged()
// Called by framework when the view size is changed
// ---------------------------------------------------------
//
void CGraphicExamEffectContainer::SizeChanged()
    {
    // TODO: Add here control resize code etc.
    }

// ---------------------------------------------------------
// CGraphicExamEffectContainer::CountComponentControls() const
// ---------------------------------------------------------
//
TInt CGraphicExamEffectContainer::CountComponentControls() const
    {
    return 0; // return nbr of controls inside this container
    }

// ---------------------------------------------------------
// CGraphicExamEffectContainer::ComponentControl(TInt aIndex) const
// ---------------------------------------------------------
//
CCoeControl* CGraphicExamEffectContainer::ComponentControl(TInt aIndex) const
    {
    return NULL;
    }

// ---------------------------------------------------------
// CGraphicExamEffectContainer::Draw(const TRect& aRect) const
// ---------------------------------------------------------
//
void CGraphicExamEffectContainer::Draw(const TRect& aRect) const
    {    
    //清除位图设备下文中的背景
    iOffScreenBitmapGc->SetPenStyle( CGraphicsContext::ENullPen );
    iOffScreenBitmapGc->SetBrushColor( KRgbGray );
    iOffScreenBitmapGc->SetBrushStyle( CGraphicsContext::ESolidBrush );
    iOffScreenBitmapGc->DrawRect( aRect );
    
    iOffScreenBitmapGc->SetPenStyle(CGraphicsContext::ESolidPen);
    iOffScreenBitmapGc->DrawEllipse(Rect());
    
    iOffScreenBitmapGc->BitBlt(aRect.iTl,iSoundSvg);

    CWindowGc& gc = SystemGc();
    gc.BitBlt( Rect().iTl,iOffScreenBitmap );
    }

// ---------------------------------------------------------
// CGraphicExamEffectContainer::HandleControlEventL(
//     CCoeControl* aControl,TCoeEvent aEventType)
// ---------------------------------------------------------
//
void CGraphicExamEffectContainer::HandleControlEventL(
    CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
    {
    // TODO: Add your control event handler code here
    }

void CGraphicExamEffectContainer::MiuoConvertComplete(TInt aError)
	{
	this->DrawDeferred();
	}

/**
* From MMdaImageUtilObserver derivation.
* Used to inform client code that a file creation operation
* has completed.
* Following this the image data will be stored in the file created previously
*
* @param aError An error code value in case manipulation step failed
*/
void CGraphicExamEffectContainer::MiuoCreateComplete(TInt aError)
	{
	
	}

/**
* From MMdaImageUtilObserver derivation.
* Used to inform client code that an open operation has completed allowing the
* subsequent encoding or decoding of an image file
*
* @param aError An error code value in case manipulation step failed
*/
void CGraphicExamEffectContainer::MiuoOpenComplete(TInt aError)
	{
	
	}

void CGraphicExamEffectContainer::ScaleZoomInImageL()
	{
	m_nScaler*=1.5;
	iScaler->ScaleL(*this, *iSoundSvg, TSize(m_nScaler, m_nScaler));
	}

void CGraphicExamEffectContainer::ScaleZoomOutImageL()
	{
	m_nScaler*=0.5;
	iScaler->ScaleL(*this, *iSoundSvg, TSize(m_nScaler, m_nScaler));
	}

// End of File