menu.cpp

一个symbian上成熟的小游戏源码

#include "Menu.h"
#include <stringloader.h>
//#include "GGBallEnv.h"

CMenu::CMenu(const TRect& aRect ):CBaseControl(aRect)
{
	iCurrentIndex=0;
	iMenuItemHeight=0;
	Hide();
}

CMenu::~CMenu()
{
	TInt count=iArray.Count();
	for (TInt i=0;i<count;i++)
	{
		delete iArray[i].iText;
	}
	iArray.Close();
}

CMenu* CMenu::NewL( const TRect& aRect )
{
	CMenu* self=CMenu::NewLC(aRect);
	CleanupStack::Pop();
	return self;
}

CMenu* CMenu::NewLC( const TRect& aRect )
{
	CMenu* self=new(ELeave)CMenu(aRect);
	CleanupStack::PushL(self);
	self->ConstructL();
	return self;
}

void CMenu::ConstructL()
{
}

void CMenu::Draw(CBitmapContext& aGc)  const
{
	//画背景
	CBaseControl::Draw(aGc);
	//画菜单项
	if (Visible())
	{
		DrawMenuItems(aGc);
	}
}

void CMenu::AddCmdL( TInt aResourceId,TFunction aFun )
{
	CmdNode item;
	item.iFun=aFun;
	item.iText=StringLoader::LoadL(aResourceId);
	iArray.Append(item);

	iRect.iTl.iY-=iMenuItemHeight;
}

void CMenu::DrawMenuItems( CBitmapContext& aGc ) const
{
	TInt count=iArray.Count();
	for (TInt i=0;i<count;i++)
	{
		TRect rect(iRect.iTl.iX,iRect.iTl.iY+iMenuItemHeight*i,
					iRect.iBr.iX,iRect.iTl.iY+iMenuItemHeight*(i+1));
		if (iCurrentIndex==i)
		{
			CGraphicsTool::DrawRect(aGc,rect,TRgb(113,92,185),ETrue);	
		}
		CGraphicsTool::DrawText(aGc,iFont,*iArray[i].iText,rect,CGraphicsContext
			::ELeft,5);
	}
	
}

void CMenu::Next()
{
	TInt count=iArray.Count();
	iCurrentIndex++;
	if (iCurrentIndex>=count)
	{
		iCurrentIndex=0;
	}
}

void CMenu::Pre()
{
	iCurrentIndex--;
	if (iCurrentIndex<0)
	{
		TInt count=iArray.Count();
		iCurrentIndex=count-1;
	}
}

TFunction CMenu::CurrentFunction()
{
	TInt count=iArray.Count();
	if (count>0 && iCurrentIndex>=0 && iCurrentIndex<=count-1)
	{
		return 	iArray[iCurrentIndex].iFun;
	}

	return EFun_None;
}

void CMenu::SetMenuItemHeight( TInt aHeight )
{
	iMenuItemHeight=aHeight;	
}