imagesviewercontainer.cpp

来自「symbian上显示动态gif的源码」· C++ 代码 · 共 116 行

/*
============================================================================
 Name        : CImagesViewerContainer from ImagesViewerContainer.h
 Author      : 
 Version     :
 Copyright   : Your copyright notice
 Description : Container control implementation
============================================================================
*/

// INCLUDE FILES
#include "ImagesViewerContainer.h"

_LIT(KJpgFileName, "c:\\Nokia\\Images\\Pictures\\test.jpg");
// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------
// CImagesViewerContainer::ConstructL(const TRect& aRect)
// EPOC two phased constructor
// ---------------------------------------------------------
//
void CImagesViewerContainer::ConstructL(const TRect& aRect)
    {
    CreateWindowL();

	iBitmap = NULL;
	iImageEngine = CImageConverterEngine::NewL(this);
	iImageEngine->StartToDecodeL(KJpgFileName);
    SetRect(aRect);
    ActivateL();
    }

// Destructor
CImagesViewerContainer::~CImagesViewerContainer()
    {
		delete iImageEngine;
		delete iBitmap;
    }

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

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

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

// ---------------------------------------------------------
// CImagesViewerContainer::Draw(const TRect& aRect) const
// ---------------------------------------------------------
//
void CImagesViewerContainer::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();
    // TODO: Add your drawing code here
    // example code...
    gc.SetPenStyle( CGraphicsContext::ENullPen );
    gc.SetBrushColor( KRgbGray );
    gc.SetBrushStyle( CGraphicsContext::ESolidBrush );
    gc.DrawRect( aRect );
	if(iBitmap)
		{
			TRect rect = Rect();
			TSize size = iBitmap->SizeInPixels();
			gc.DrawBitmap(TRect(TPoint(5, 5), TSize(rect.Width() - 10, (size.iHeight * size.iWidth)/(rect.Width() - 10))), iBitmap);
		}
    }

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

void CImagesViewerContainer::NotifyCompletion( TInt aErr )
{
	if(aErr == KErrNone)
	{
		delete iBitmap;
		iBitmap = iImageEngine->iBitmap;
		iImageEngine->iBitmap = NULL;
		DrawNow();
	}
}