biaofengxsurface.cpp

一个可以加载图片作为下拉菜单的symbian手机示例

/*
============================================================================
 Name        : XSurface.cpp
 Author      : 
 Version     :
 Copyright   : Your copyright notice
 Description : CXSurface implementation
============================================================================
*/

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

//#include <eikapp.h>


CXSurface::CXSurface()
{
	// No implementation required
}


CXSurface::~CXSurface()
{
	if(m_iBitmapGc)
	{
		delete m_iBitmapGc;
		m_iBitmapGc = NULL;
	}

	if(m_iBitmapDevice)
	{
		delete m_iBitmapDevice;
		m_iBitmapDevice = NULL;
	}

	if (m_iBitmap)
	{ 
		delete m_iBitmap;
		m_iBitmap = NULL;
	}
}

CXSurface* CXSurface::NewLC(TSize asize   )
{
	CXSurface* self = new (ELeave)CXSurface();
	CleanupStack::PushL(self);
	self->ConstructL(asize);
	return self;
}

CXSurface* CXSurface::NewL(TSize asize  )
{
	CXSurface* self=CXSurface::NewLC(asize );
	CleanupStack::Pop(); // self;
	return self;
}

void CXSurface::ConstructL(TSize asize )
{
	m_iBitmap       = CXPic::CreatL(asize);
	//m_iBitmap       = apic;
	m_iBitmapDevice = CFbsBitmapDevice::NewL(m_iBitmap->m_iBitmap);
	m_iBitmapDevice->CreateContext(m_iBitmapGc);
}

void CXSurface::BitBlt(TInt x,TInt y,CXPic *apic)
{
	if(!apic)return;
	if(!apic->m_bIsLoadFinish)return;
	BitBlt(x,y,apic,TRect(0,0,apic->m_iWidth,apic->m_iHeight));
}

void CXSurface::BitBlt(TInt x,TInt y,CXPic *apic,TRect asrc_r)
{
	if(!apic)return;
	if(!apic->m_bIsLoadFinish)return;
	if(apic->m_iBitmapMask)
		m_iBitmapGc->BitBltMasked(TPoint(x,y),apic->m_iBitmap,asrc_r,apic->m_iBitmapMask,ETrue);
	else  
		m_iBitmapGc->BitBlt(TPoint(x,y),apic->m_iBitmap,asrc_r);
}

void CXSurface::Fill(TInt x, TInt y,TInt w,TInt h,TRgb color)
{
	Fill(TRect(x,y,x+w,y+h),color);
}

void CXSurface::Fill(const TRect& r,TRgb color)
{
	m_iBitmapGc->SetBrushStyle(CGraphicsContext::ESolidBrush);
	m_iBitmapGc->SetBrushColor(color);
	m_iBitmapGc->SetPenColor(color);
	m_iBitmapGc->DrawRect(r);
	m_iBitmapGc->SetBrushStyle(CGraphicsContext::ENullBrush);
}

void CXSurface::Rect(TInt x, TInt y,TInt w,TInt h,TRgb color)
{
	Rect(TRect(x,y,x+w,y+h),color);
}

void CXSurface::Rect(const TRect& r,TRgb color)
{
	m_iBitmapGc->SetBrushStyle(CGraphicsContext::ENullBrush);
	m_iBitmapGc->SetBrushColor(color);
	m_iBitmapGc->SetPenColor(color);
	m_iBitmapGc->DrawRect(r);
}

void CXSurface::Line(TInt x1, TInt y1,TInt x2, TInt y2,TRgb color)
{
	m_iBitmapGc->SetPenColor(color);
	m_iBitmapGc->DrawLine(TPoint(x1,y1),TPoint(x2,y2));
}

void CXSurface::Text(const TDesC& text,TInt x,TInt y,TRgb color,const CFont * font,TInt mode)
{
	if(mode&TEXT_RIGHT)x-=GetTextWidthInPix(text);
	else if(mode&TEXT_HCENTER)x-=GetTextWidthInPix(text)/2;

	if(mode&TEXT_TOP)y+=GetTextHeightInPix();

	if(font)m_iBitmapGc->UseFont(font);
	else m_iBitmapGc->UseFont(CEikonEnv::Static()->AnnotationFont());
	m_iBitmapGc->SetPenColor(color);
	m_iBitmapGc->DrawText(text,TPoint(x,y));
	m_iBitmapGc->DiscardFont();
}

TInt CXSurface::GetTextWidthInPix(const TDesC& text,const CFont * font)
{
#ifdef __WINS__
	return 12*text.Length();
#endif

	if(font)return font->TextWidthInPixels(text);

	return CEikonEnv::Static()->AnnotationFont()->TextWidthInPixels(text);
}

TInt CXSurface::GetTextHeightInPix(const CFont * font)
{
	if(font)return font->HeightInPixels();

	return CEikonEnv::Static()->AnnotationFont()->HeightInPixels();
}

void CXSurface::SetClip(TInt x,TInt y,TInt w,TInt h)
{
	m_iBitmapGc->SetClippingRect(TRect(x,y,x+w,y+h));
}

CFbsBitmap* CXSurface::GetFbsBitmap()
{
	return m_iBitmap->m_iBitmap;
}

CXPic* CXSurface::GetBitmap()
{
	return m_iBitmap;
}

TInt CXSurface::GetWidth()
{
	return m_iBitmap->m_iWidth;
}

TInt CXSurface::GetHeight()
{
	return m_iBitmap->m_iHeight;
}