biaofengxpic.cpp

一个可以加载图片作为下拉菜单的symbian手机示例

/*
============================================================================
 Name        : XPic.cpp
 Author      : 
 Version     :
 Copyright   : Your copyright notice
 Description : CXPic implementation
============================================================================
*/

#include <aknutils.h>
#include "BiaofengXPic.h"


// #include "travelv3App.h"

CXPic::CXPic()
{
	m_bIsLoadFinish = EFalse;
	m_iBitmap = NULL;
	m_iBitmapMask = NULL;
	m_iConverter = NULL;
	m_iScaler = NULL;
	m_iNewWidth=-1;
	m_iNewHeight=-1;
}

CXPic::~CXPic()
{
	delete m_iBitmap;
	delete m_iBitmapMask;
	delete m_iConverter;
	delete m_iScaler;
}

CXPic* CXPic::CreatL(TSize asize)
{
	CXPic* self = new (ELeave)CXPic();
	CleanupStack::PushL(self);
	self->ConstructL(asize);
	CleanupStack::Pop(); // self;
	return self;
}

CXPic* CXPic::LoadL(const TDesC& path,const TDesC& name)
{
	CXPic* self = new (ELeave)CXPic();
	CleanupStack::PushL(self);
	self->ConstructL(path,name);
	CleanupStack::Pop(); // self;
	return self;
}

void CXPic::MiuoOpenComplete(TInt aError)
{
	if (aError == KErrNone)
	{
		TFrameInfo frameInfo;
		m_iConverter->FrameInfo(0,frameInfo);
		m_iBitmap->Create(frameInfo.iOverallSizeInPixels,EColor64K);
		if(m_iBitmapMask)
		{
			m_iBitmapMask->Create(frameInfo.iOverallSizeInPixels,EGray256);
			m_iConverter->ConvertL(*m_iBitmap,*m_iBitmapMask);
		}
		else m_iConverter->ConvertL(*m_iBitmap);
	}
}

void CXPic::MiuoConvertComplete(TInt aError)
{
	if (aError == KErrNone)
	{
		m_iWidth=m_iBitmap->SizeInPixels().iWidth;
		m_iHeight=m_iBitmap->SizeInPixels().iHeight;
		
		m_bIsLoadFinish = ETrue;
		
		if(m_iConverter)
		{
			delete m_iConverter;
			m_iConverter = NULL;
		}
		
		if(m_iScaler)
		{
			delete m_iScaler;
			m_iScaler=NULL;
		}

		if(m_iNewWidth!=-1)Scale(m_iNewWidth,m_iNewHeight);
	}
}

void CXPic::MiuoCreateComplete(TInt aError)
{
}

void CXPic::ConstructL(TSize asize)
{
	m_iWidth        = asize.iWidth;
	m_iHeight       = asize.iHeight;
	m_iBitmap       = new (ELeave) CFbsBitmap();
	m_iBitmap->Create(asize,EColor16M);

	m_bIsLoadFinish = ETrue;
}

void CXPic::ConstructL(const TDesC& path,const TDesC& name)
{
	TFileName fullpath;
	fullpath=path;
	fullpath.Append(name);
	m_iBitmap = new (ELeave) CFbsBitmap;
	
	TBuf<5> type=name.Right(3);
	type.LowerCase();
	if(type.Compare(_L("png"))==0)
		m_iBitmapMask = new (ELeave) CFbsBitmap;
	m_iConverter = CMdaImageFileToBitmapUtility::NewL(*this);
	m_iConverter->OpenL(fullpath);
}


void CXPic::Scale(TInt width,TInt height)
{
	if(!m_bIsLoadFinish)
	{
		m_iNewWidth=width;
		m_iNewHeight=height;
	}
	else
	{
		m_iNewWidth=-1;
		m_iNewHeight=-1;
		m_bIsLoadFinish = EFalse;
		if(!m_iScaler)m_iScaler = CMdaBitmapScaler::NewL();
		m_iScaler->ScaleL(*this,*m_iBitmap,TSize(width,height),EFalse);
	}
}

TInt CXPic::GetWidth()
{
	return m_iWidth;
}

TInt CXPic::GetHeight()
{
	return m_iHeight;
}

TBool CXPic::IsLoadFin()
{
	return m_bIsLoadFinish;
}