gridcontainer.cpp

symbian中讲述的一个有关grid的简单例子

/*
* ============================================================================
*  Name     : CGridContainer from CCoeControl, MCoeControlObserver
*  Part of  : MyHello
*  Copyright (c) 2003 Nokia. All rights reserved.
* ============================================================================
*/

// INCLUDE FILES


#include <MyHello.rsg>
#include "MyHello.hrh"
#include "GridContainer.h"
#include <akngrid.h>	//for Grid
#include "common.h"

#include "MyHelloAppUi.h"
#include <e32base.h>		//for CArrayPtr
#include <AknIconArray.h>	//for CAknIconArray
#include <AknLists.h>		//for AknListBoxLayouts

// ================= MEMBER FUNCTIONS =======================

// C++ default constructor can NOT contain any code, that
// might leave.
//
CGridContainer::CGridContainer()
    {
	m_pGrid = NULL;
    }

// EPOC default constructor can leave.
void CGridContainer::ConstructL(const TRect& aRect)
    {
    CreateWindowL();

	//---begin-for-Grid----------------------
	m_pGrid = new( ELeave ) CAknGrid;
	m_pGrid->SetContainerWindowL( *this );
	m_pGrid->ConstructL( this, EAknListBoxSelectionGrid );
	m_pGrid->SetEmptyGridTextL(_L("empty"));
	
	// set layout
	m_pGrid->SetRect(aRect.Size());
	
	// set initial params for the grid
	m_pGridType = EAknExGridSelectionGrid;
	
	iVerticalOrientation	= EFalse;
	iTopToBottom			= ETrue;
	iLeftToRight			= ETrue;
	iNumOfColumns			= 3;
	iNumOfRows				= 3;
	iContentType			= EContainGraphic;
	iNumOfItems				= 9;
	
	iVerticalScrollingType = CAknGridView::EScrollIncrementLineAndLoops;
	iHorizontalScrollingType = CAknGridView::EScrollIncrementLineAndLoops;
	iSizeOfItems.iWidth = ( aRect.iBr.iX - aRect.iTl.iX ) / iNumOfColumns;
	iSizeOfItems.iHeight = ( aRect.iBr.iY - aRect.iTl.iY ) / iNumOfRows;

	m_pGrid->SetLayoutL( iVerticalOrientation, iLeftToRight, iTopToBottom, 
						iNumOfColumns, iNumOfRows, iSizeOfItems );
	m_pGrid->SetPrimaryScrollingType( iHorizontalScrollingType );
	m_pGrid->SetSecondaryScrollingType( iVerticalScrollingType );	

	//load data 
	LoadGraphicsL();
	AddDataL();
	iInstantsCreated = ETrue;

	// activate the grid
	m_pGrid->SetCurrentDataIndex(0);
	m_pGrid->MakeVisible( ETrue );
	m_pGrid->SetFocus( ETrue );
	m_pGrid->ActivateL();
	m_pGrid->DrawNow();
//---end-for-Grid-------------------------

    SetRect(aRect);
    ActivateL();
    }

// Destructor
CGridContainer::~CGridContainer()
    {
	MEM_FREE(m_pGrid);
    }

// ---------------------------------------------------------
// CGridContainer::FocusTo(TInt aCommand)
// Change foccused control.
// (other items were commented in a header).
// ---------------------------------------------------------
//

void CGridContainer::FocusTo(TInt aCommand)
    {
    }

// ---------------------------------------------------------
// CGridContainer::SizeChanged()
// Called by framework when the view size is changed
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CGridContainer::SizeChanged()
    {
    }

// ---------------------------------------------------------
// CGridContainer::CountComponentControls() const
// (other items were commented in a header).
// ---------------------------------------------------------
//
TInt CGridContainer::CountComponentControls() const
    {
		return 1; // return nbr of controls inside this container
    }

// ---------------------------------------------------------
// CGridContainer::ComponentControl(TInt aIndex) const
// (other items were commented in a header).
// ---------------------------------------------------------
//
CCoeControl* CGridContainer::ComponentControl(TInt aIndex) const
    {
		//return NULL;
		return m_pGrid;
    }

// ---------------------------------------------------------
// CGridContainer::Draw(const TRect& aRect) const
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CGridContainer::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();
    gc.SetPenStyle(CGraphicsContext::ENullPen);
    gc.SetBrushColor(KRgbGray);
    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
    gc.DrawRect(aRect);
    }

// ---------------------------------------------------------
// CGridContainer::OfferKeyEventL(...)
// Notify key events to editors.
// (other items were commented in a header).
// ---------------------------------------------------------
//
TKeyResponse CGridContainer::OfferKeyEventL(
    const TKeyEvent& aKeyEvent, TEventCode aType)
	{
		//return EKeyWasNotConsumed;
		if (NULL != m_pGrid)
		{
			return m_pGrid->OfferKeyEventL(aKeyEvent, aType);
		}
		else
		{
			return EKeyWasNotConsumed;
		}
	}


// ---------------------------------------------------------
// CGridContainer::HandleControlEventL(
//     CCoeControl* aControl,TCoeEvent aEventType)
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CGridContainer::HandleControlEventL(
    CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
    {
    }

//for Grid

void CGridContainer::LoadGraphicsL()
{
	CMyHelloAppUi* pApp = (CMyHelloAppUi*)CEikonEnv::Static()->AppUi();

    CArrayPtr< CGulIcon >* icons = new(ELeave) CAknIconArray(iNumOfItems);
    CleanupStack::PushL( icons );
    // Create icon bitmap and mask.
    if ( m_pGridType == EAknExGridSelectionGrid )
	{
		icons->AppendL(pApp->LoadGraphicsL(1));
		icons->AppendL(pApp->LoadGraphicsL(1));
		icons->AppendL(pApp->LoadGraphicsL(1));
		icons->AppendL(pApp->LoadGraphicsL(0));
		icons->AppendL(pApp->LoadGraphicsL(0));
		icons->AppendL(pApp->LoadGraphicsL(0));
		icons->AppendL(pApp->LoadGraphicsL(1));
		icons->AppendL(pApp->LoadGraphicsL(1));
		icons->AppendL(pApp->LoadGraphicsL(1));
	}
    // Set icon array.
    m_pGrid->ItemDrawer()->FormattedCellData()->SetIconArrayL( icons );
    CleanupStack::Pop(); // icons array
}

void CGridContainer::AddDataL()
{
    MDesCArray* array = m_pGrid->Model()->ItemTextArray();
    CDesCArray* cArray = ( CDesCArray* )array;

	TBuf<32> sBuf;
//SMS
	sBuf.Copy(_L("0\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//PHB
	sBuf.Copy(_L("1\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//Account
	sBuf.Copy(_L("2\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//SMS
	sBuf.Copy(_L("3\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//PHB
	sBuf.Copy(_L("4\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//Account
	sBuf.Copy(_L("5\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//SMS
	sBuf.Copy(_L("6\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//PHB
	sBuf.Copy(_L("7\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);
//Account
	sBuf.Copy(_L("8\t"));
	sBuf.Append(_L("abc"));
	cArray->AppendL(sBuf);

	//const CFont* fontText = ApacPlain12();
    m_pGrid->HandleItemAdditionL();
    ApplySelGridGraphicStyleL();
}

void CGridContainer::ApplySelGridGraphicStyleL()
{
    if (!m_pGrid) 
	{
        return;
	}
	
    AknListBoxLayouts::SetupStandardGrid( *m_pGrid );

	const CFont* fontText = ApacPlain12();
	TInt nX = (m_pGrid->ColumnWidth() - 24) / 2;
	TInt nY = (m_pGrid->ItemHeight() - 24 - fontText->HeightInPixels()) / 2;
    AknListBoxLayouts::SetupFormGfxCell( 
		*m_pGrid, 
		m_pGrid->ItemDrawer(),
		0, 
		nX, 
		nY, 
		0, 
		0,  
		24, 
		24, 
		TPoint( nX, nY ), 
		TPoint( 24+nX, 24+nY) );
	
	// layout of text
	AknListBoxLayouts::SetupFormAntiFlickerTextCell( 
		*m_pGrid, 
		m_pGrid->ItemDrawer(),
		1, 
		fontText, 
		215, 
		0, 
		0, 
		24+nY+fontText->HeightInPixels(),
		m_pGrid->ColumnWidth(), 
		CGraphicsContext::ECenter,
		TPoint( 0, 24+nY), 
		TPoint( m_pGrid->ColumnWidth(), m_pGrid->ItemHeight()) );

    DrawNow();
}


// End of File