ecomexamplecontainer.cpp

来自「series60 应用程序开发的源代码 series60 应用程序开发的源代码」· C++ 代码 · 共 164 行

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

// INCLUDE FILES

// Class include
#include "EComExampleContainer.h"

// System includes
#include <eiklabel.h> // CEikLabel
#include <EComExample.rsg> // R_LABEL_TEXT
#include <StringLoader.h> // StringLoader
#include <shapeinterface.h>

// CONSTANTS

// N.B. #define'd as DLL cannot contain writeable static data
#define KLabelPosition TPoint(10,10)
_LIT8 (KCircleText,"Circle");
_LIT8 (KRectangleText,"Rectangle");

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

/**
* Symbian OS 2nd phase constructor.  Creates a Window for the controls, which it contains.
* Constructs a label and adds it to the window, which it then activates.
* @param aRect The rectangle for this window
*/
void CEComExampleContainer::ConstructL(const TRect& aRect)
{
    CreateWindowL();

    iShape = CShape::NewL();    
    iLabel = new (ELeave) CEikLabel;
    iLabel->SetContainerWindowL(*this);

    HBufC* labelText;
    labelText = StringLoader::LoadLC(R_LABEL_TEXT);    // Pushes labelText onto the Cleanup Stack.
    iLabel->SetTextL(*labelText);
    CleanupStack::PopAndDestroy(labelText);

    SetRect(aRect);
    ActivateL();
}

/**
* Symbian OS 2 phase constructor.
* Constructs the CEComExampleContainer using the NewLC method, popping
* the constructed object from the CleanupStack before returning it.
*
* @param aRect The rectangle for this window
* @return The newly constructed CEComExampleContainer
*/
CEComExampleContainer* CEComExampleContainer::NewL(const TRect& aRect)
{
    CEComExampleContainer* self = CEComExampleContainer::NewLC(aRect);
    CleanupStack::Pop(self);
    return self;
}

/**
* Symbian OS 2 phase constructor.
* Constructs the CEComExampleContainer using the constructor and ConstructL
* method, leaving the constructed object on the CleanupStack before returning it.
*
* @param aRect The rectangle for this window
* @return The newly constructed CEComExampleContainer
*/
CEComExampleContainer* CEComExampleContainer::NewLC(const TRect& aRect)
{
    CEComExampleContainer* self = new (ELeave) CEComExampleContainer;
    CleanupStack::PushL(self);
    self->ConstructL(aRect);
    return self;
}

/**
* Destructor.  Frees up memory for the iLabel.
*/
CEComExampleContainer::~CEComExampleContainer()
{
    delete iLabel;
    delete iShape;
}

/**
*
* Called by framework when the view size is changed.  Resizes the
* iLabel accordingly.
*
*/
void CEComExampleContainer::SizeChanged()
{
    iLabel->SetExtent(KLabelPosition, iLabel->MinimumSize());
}

/**
* Called by the framework in compound controls
* @return The number of controls in this CEComExampleContainer
*/
TInt CEComExampleContainer::CountComponentControls() const
{
    return 1; // return number of controls inside this container
}

/**
* Called by the framework in compound controls
* @param The index of the control to return
* @return The control for aIndex
*/
CCoeControl* CEComExampleContainer::ComponentControl(TInt aIndex) const
{
    switch (aIndex)
    {
        case 0:
            return iLabel;
        default:
            return NULL;
    }
}

/**
* Called by the framework to draw this control.  Clears the area in
* aRect.
* @param aRect in which to draw
*/
void CEComExampleContainer::Draw(const TRect& aRect) const
{
    CWindowGc& gc = SystemGc();
    gc.Clear(aRect);

    // draw the 'cursor' crosshair, size 10 pixels by 10 pixels
    gc.SetPenSize(TSize(1,1));
    gc.SetPenColor(KRgbBlack);
    if(iShape)
        iShape->Draw(gc);

}


void CEComExampleContainer::DrawCircleL()
{
    delete iShape;
    iShape = NULL;
    iShape = CShape::NewL (KCircleText);
    DrawDeferred();
}

void CEComExampleContainer::DrawRectangleL()
{
    delete iShape;
    iShape = NULL;
    iShape = CShape::NewL (KRectangleText);
    DrawDeferred();

}

// End of File