复合控件的练习

复合控件的练习

练习了一下复合控件，其实就是用传统编程模式下添加 CEikLable ，CEikEdwin，CEikTextListBox 控件

对于 CEikLable和CEikTextListBox 没有用到资源文件，CEikEdwin 用的是资源文件，对于读写 CEikTextListBox 是新的知识，及移动

CEikEdwin 与 CEikTextListBox 控件的焦点

代码：头文件

#ifndef STACKCONTAINER_H

#define STACKCONTAINER_H

// INCLUDES

#include <coecntrl.h>

// FORWARD DECLARATIONS

class CEikLabel; // for example labels

class CEikEdwin;

class CEikTextListBox;

// CLASS DECLARATION

/**

* CStackContainer container control class.

*

*/

class CStackContainer : public CCoeControl, MCoeControlObserver

{

public: // Constructors and destructor

/**

* EPOC default constructor.

* @param aRect Frame rectangle for container.

*/

void ConstructL(const TRect& aRect);

/**

* Destructor.

*/

~CStackContainer();

public: // New functions

public: // Functions from base classes

private: // Functions from base classes

/**

* From CoeControl,SizeChanged.

*/

void SizeChanged();

/**

* From CoeControl,CountComponentControls.

*/

TInt CountComponentControls() const;

/**

* From CCoeControl,ComponentControl.

*/

CCoeControl* ComponentControl(TInt aIndex) const;

/**

* From CCoeControl,Draw.

*/

void Draw(const TRect& aRect) const;

/**

* From MCoeControlObserver

* Acts upon changes in the hosted control's state.

*

* @param aControl The control changing its state

* @param aEventType The type of control event

*/

void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

public:

void HandleCommandL(TInt aCommand);

private: //data

CEikLabel* iLPop; // example label

CEikLabel* iLPush; // example label

CEikLabel* iLContent;

CEikEdwin* iPushNumber;

CEikTextListBox* iListBox;

};

#endif

// End of File

代码文件：

/*

* ============================================================================

* Name : CStackContainer from StackContainer.h

* Part of : Stack

* Created : 11.05.2010 by

* Implementation notes:

* Initial content was generated by Series 60 Application Wizard.

* Version :

* Copyright:

* ============================================================================

*/

// INCLUDE FILES

#include "StackContainer.h"

#include <eiklabel.h> // for example label control

#include <eikedwin.h>

#include <Stack.rsg>

#include <coemain.h>

#include <aknlists.h>

#include <barsread.h>

#include <badesca.h> // CDesCArrayFlat

#include <e32keys.h>

#include <eikmsg.h> // iEikonEnv

#include <Stack.hrh>

#include <eiklbv.h>

#define push_label TPoint(5,5)

#define pop_label TPoint(5,35)

#define push_edit TPoint(88,5)

#define pop_content TPoint(88,35)

#define list_pos TPoint(0,60)

#define text_size TSize(60,20)

#define listbox_size TSize(176,80)

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

// ---------------------------------------------------------

// CStackContainer::ConstructL(const TRect& aRect)

// EPOC two phased constructor

// ---------------------------------------------------------

//

void CStackContainer::ConstructL(const TRect& aRect)

{

CreateWindowL();

iLPush = new (ELeave) CEikLabel;

iLPush->SetContainerWindowL( *this );

iLPush->SetTextL( _L("To Push") );

iLPop = new (ELeave) CEikLabel;

iLPop->SetContainerWindowL( *this );

iLPop->SetTextL( _L("Poped") );

iLContent = new (ELeave)CEikLabel;

iLContent->SetContainerWindowL(*this);

iLContent->SetTextL(_L("None"));

TResourceReader aReader;

iCoeEnv->CreateResourceReaderLC(aReader,R_MY_ED);

iPushNumber = new (ELeave) CEikEdwin;

iPushNumber->ConstructFromResourceL(aReader);

CleanupStack::PopAndDestroy();

iPushNumber->SetContainerWindowL(*this);

iPushNumber->SetBorder(TGulBorder::ESingleBlack);

iPushNumber->SetFocus(ETrue);

iListBox = new (ELeave)CAknSingleNumberStyleListBox;

iListBox->SetContainerWindowL(*this);

iListBox->ConstructL(this,0);

CDesCArrayFlat* array = new (ELeave)CDesCArrayFlat(5);

CleanupStack::PushL(array);

array->AppendL(_L("\tBottom of Stack"));

CleanupStack::Pop();

iListBox->Model()->SetItemTextArray(array);

iListBox->Model()->SetOwnershipType(ELbmOwnsItemArray);

iListBox->SetBorder(TGulBorder::EShallowRaised);

iListBox->ActivateL();

iListBox->CreateScrollBarFrameL(ETrue);

iListBox->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOn,CEikScrollBarFrame::EAuto);

SetRect(aRect);

ActivateL();

}

// Destructor

CStackContainer::~CStackContainer()

{

delete iLPush;

delete iLPop;

delete iLContent;

delete iPushNumber;

delete iListBox;

}

// ---------------------------------------------------------

// CStackContainer::SizeChanged()

// Called by framework when the view size is changed

// ---------------------------------------------------------

//

void CStackContainer::SizeChanged()

{

// TODO: Add here control resize code etc.

//iLabel->SetExtent( TPoint(10,10), iLabel->MinimumSize() );

//iToDoLabel->SetExtent( TPoint(10,100), iToDoLabel->MinimumSize() );

iLPush->SetExtent(push_label,text_size);

iLPop->SetExtent(pop_label,text_size);

iLContent->SetExtent(pop_content,text_size);

iPushNumber->SetExtent(push_edit,text_size);

iListBox->SetExtent(list_pos,listbox_size);

}

// ---------------------------------------------------------

// CStackContainer::CountComponentControls() const

// ---------------------------------------------------------

//

TInt CStackContainer::CountComponentControls() const

{

  return 5; // return nbr of controls inside this container

}

// ---------------------------------------------------------

// CStackContainer::ComponentControl(TInt aIndex) const

// ---------------------------------------------------------

//

CCoeControl* CStackContainer::ComponentControl(TInt aIndex) const

{

switch ( aIndex )

{

case 0:

  return iLPush;

case 1:

  return iLPop;

case 2:

  return iLContent;

case 3:

  return iListBox;

case 4:

  return iPushNumber;

default:

  return NULL;

}

}

// ---------------------------------------------------------

// CStackContainer::Draw(const TRect& aRect) const

// ---------------------------------------------------------

//

void CStackContainer::Draw(const TRect& aRect) const

{

CWindowGc& gc = SystemGc();

// TODO: Add your drawing code here

// example code...

gc.SetPenStyle( CGraphicsContext::ENullPen );

gc.SetBrushColor( KRgbGray );

gc.SetBrushStyle( CGraphicsContext::ESolidBrush );

gc.DrawRect( aRect );

}

// ---------------------------------------------------------

// CStackContainer::HandleControlEventL(

// CCoeControl* aControl,TCoeEvent aEventType)

// ---------------------------------------------------------

//

void CStackContainer::HandleControlEventL(

CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)

{

// TODO: Add your control event handler code here

}

TKeyResponse CStackContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)

{

if (aType != EEventKey )

{

return EKeyWasNotConsumed;

}

if (iPushNumber && iPushNumber->IsFocused())

{

if (aKeyEvent.iCode==EKeyDownArrow)

{

iPushNumber->SetFocus(EFalse);

iListBox->SetFocus(ETrue);

return EKeyWasConsumed;

}

else

{

iPushNumber->OfferKeyEventL(aKeyEvent,aType);

}

}

else if (iListBox && iListBox->IsFocused())

{

if (aKeyEvent.iCode==EKeyUpArrow)

{

iListBox->SetFocus(EFalse);

iPushNumber->SetFocus(ETrue);

return EKeyWasConsumed;

}

else

if (aKeyEvent.iCode==EKeyLeftArrow)

{

iEikonEnv->InfoMsg(_L("left arrow"));

return EKeyWasConsumed;

}

else

if (aKeyEvent.iCode==EKeyRightArrow)

{

iEikonEnv->InfoMsg(_L("right arrow"));

return EKeyWasConsumed;

}

else

{

iPushNumber->OfferKeyEventL(aKeyEvent,aType);

}

}

return EKeyWasNotConsumed;

}

void CStackContainer::HandleCommandL(TInt aCommand)

{

if (aCommand==EStackCmdPush)

{

TBuf<32> buf ;

buf.Zero();

iPushNumber->GetText(buf);

if (buf.Length()==0)

{

iEikonEnv->InfoMsg(_L("can't zero length"));

return;

}

buf.Insert(0,_L("\t"));

CDesCArray* array =

static_cast<CDesCArray*>(iListBox->Model()->ItemTextArray());

array->InsertL(0,buf);

buf.Zero();

iPushNumber->SetTextL(&buf);

iListBox->HandleItemAdditionL();

}

else if (aCommand==EStackCmdPop)

{

CDesCArray* array = static_cast<CDesCArray*>(iListBox->Model()->ItemTextArray());

if (array->Count()==1)

{

iEikonEnv->InfoMsg(_L("stack is empty"));

return;

} else

{

TBuf<32> buf;

TPtrC ptr = (*array)[0];

buf.Copy(ptr);

buf.Delete(0,1);

iEikonEnv->InfoMsg(buf);

iLContent->SetTextL(buf);

array->Delete(0);

iListBox->HandleItemRemovalL();

}

}

}

// End of File

 

其中对于 HandleCommand 是要在 AppUi 中的 handleCommand 来调用的
如下所示：

void CStackAppUi::HandleCommandL(TInt aCommand)

{

switch ( aCommand )

{

case EAknSoftkeyBack:

case EEikCmdExit:

{

Exit();

break;

}

case EStackCmdAppTest:

{

iEikonEnv->InfoMsg(_L("test"));

break;

}

// TODO: Add Your command handling code here

case EStackCmdPush:

case EStackCmdPop:

{

iAppContainer->HandleCommandL(aCommand);

break;

}

default:

break;

}

}

 

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