shapespiechartview.cpp

来自「最新官方例子,图形,描述副,基本控件,通讯协议,等等,」· C++ 代码 · 共 153 行

/**
 * 
 * @brief Definition of CShapesPieChartView
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version 1.0
 */

// INCLUDE FILES

// Class includes
#include  "ShapesPieChartView.h"

// System includes
#include  <aknviewappui.h>	// CAknViewAppUi
#include  <Shapes.rsg>		// R_SHAPES_PIECHARTVIEW

// User includes
#include  "ShapesPieChartContainer.h"	// CShapesPieChartContainer

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

/** 
 * Destructor. Frees up memory for iContainer.
 * Also removes the Control from the control stack
 */
CShapesPieChartView::~CShapesPieChartView()
	{
	if (iContainer)
		{
		AppUi()->RemoveFromViewStack(*this, iContainer);
		}

	delete iContainer;
	}

/**
 * Symbian OS 2 phase constructor.
 * Constructs the CShapesPieChartView using the NewLC method, popping
 * the constructed object from the CleanupStack before returning it.
 * 
 * @param aShapesModel a reference to the model
 * @return The newly constructed CShapesPieChartView
 */
CShapesPieChartView* CShapesPieChartView::NewL(CShapesModel& aShapesModel)
	{
	CShapesPieChartView* self = CShapesPieChartView::NewLC(aShapesModel);
	CleanupStack::Pop(self);
	return self;
	}

/**
 * Symbian OS 2 phase constructor.
 * Constructs the CShapesPieChartView using the constructor and ConstructL 
 * method, leaving the constructed object on the CleanupStack before returning it.
 * 
 * @param aShapesModel a reference to the model
 * @return The newly constructed CShapesPieChartView
 */
CShapesPieChartView* CShapesPieChartView::NewLC(CShapesModel& aShapesModel)
	{
	CShapesPieChartView* self = new (ELeave) CShapesPieChartView(aShapesModel);
	CleanupStack::PushL(self);
	self->ConstructL();
	return self;
	}

/**
 * Symbian OS 2nd phase constructor.  
 * Uses the superclass constructor to construct the view using the 
 * R_SHAPES_PIECHARTVIEW resource.
 */
void CShapesPieChartView::ConstructL()
	{
	BaseConstructL(R_SHAPES_PIECHARTVIEW);
	}

/**
 * C++ constructor
 *
 * @param aShapesModel a reference to the model
 */
CShapesPieChartView::CShapesPieChartView(CShapesModel& aShapesModel)
 : iShapesModel(aShapesModel)
	{
	}

/**
 * Called by the framework
 * @return The Uid for this view
 */
TUid CShapesPieChartView::Id() const
	{
	return KPieChartViewId;
	}

/**
 * From CAknView, takes care of command handling for this view.
 *
 * @param aCommand command to be handled
 */
void CShapesPieChartView::HandleCommandL(TInt aCommand)
	{   
	switch (aCommand)
		{
		case EAknSoftkeyBack:
			AppUi()->HandleCommandL(EEikCmdExit);
			break;
		default:
			break;            
		}
	}

/**
 * Called by the framework when the view is activated.  Constructs the 
 * container if necessary, setting this view as its MOP parent, and 
 * adding it to the control stack.
 *
 * @param aPrevViewId not used
 * @param aCustomMessageId not used
 * @param aCustomMessage not used
 */
void CShapesPieChartView::DoActivateL(
   const TVwsViewId& /*aPrevViewId*/,
   TUid /*aCustomMessageId*/,
   const TDesC8& /*aCustomMessage*/)
	{
	if (!iContainer)
		{
		iContainer = CShapesPieChartContainer::NewL(iShapesModel, ClientRect());
		iContainer->SetMopParent(this);
		AppUi()->AddToStackL(*this, iContainer);
		}
   }

/**
 * Called by the framework when the view is deactivated.  
 * Removes the container from the control stack and deletes it.
 */
void CShapesPieChartView::DoDeactivate()
	{
	if (iContainer)
		{
		AppUi()->RemoveFromViewStack(*this, iContainer);
		}

	delete iContainer;
	iContainer = 0;
	}

// End of File