S60MemoryLabContainer.cpp
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上传日期:2007-03-11
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文件大小:5k
- // Copyright: (c) 2006 Nokia Ltd. All rights reserved.
- // INCLUDE FILES
- #include "S60MemoryLabContainer.h"
- #include <eiklabel.h> // for example label control
- #include <eikappui.h>
- // ================= MEMBER FUNCTIONS =======================
- // ---------------------------------------------------------
- // CS60MemoryLabContainer::ConstructL(const TRect& aRect)
- // Second phase constructor
- // ---------------------------------------------------------
- //
- _LIT(KTextExtremelyLongLabel, "Extremely Long Label");
- _LIT(KTextVeryLongLabel, "Very Long Label");
- _LIT(KTextLongLabel, "Long Label");
- _LIT(KTextLabel, "Label");
- _LIT(KTextCleanupStackTest, "Cleanup Stack Test");
- void CS60MemoryLabContainer::ConstructL(const TRect& aRect)
- {
- CreateWindowL();
- // Edit 1: uncomment the line below
- // User::Leave(KErrCancel);
- iTopLabel = new (ELeave) CEikLabel;
- iTopLabel->SetContainerWindowL(*this);
- iTopLabel->SetTextL(KTextLabel);
- iBottomLabel = new (ELeave) CEikLabel;
- iBottomLabel->SetContainerWindowL( *this );
- iBottomLabel->SetTextL(KTextLongLabel);
- SetRect(aRect);
- ActivateL();
- }
- // Destructor
- CS60MemoryLabContainer::~CS60MemoryLabContainer()
- {
- delete iTopLabel;
- delete iBottomLabel;
- }
- void CS60MemoryLabContainer::ToggleLabelsL()
- {
- if (iToggleFlag)
- {
- iTopLabel->SetTextL(KTextLabel);
- iBottomLabel->SetTextL(KTextLongLabel);
- }
- else
- {
- // Edit 3:
- // a) Add a Trap harness (TRAPD macro) around the following 3 lines of code
- // b) If an error occurs:
- // i) Set the text of iTopLabel to be KTextLabel
- // ii) Raise the error again using User::Leave(error)
- iTopLabel->SetTextL(KTextVeryLongLabel);
- // Edit 2: Uncomment the line below
- // User::Leave(KErrNoMemory); // simulates the line below leaving
- iBottomLabel->SetTextL(KTextExtremelyLongLabel);
- }
- iToggleFlag = !iToggleFlag;
- }
- void CS60MemoryLabContainer::CleanupStackTestL()
- {
- // Create string on the heap to store a copy of a literal string
- HBufC* labelText = HBufC::NewL(KTextCleanupStackTest().Length());
- // Edit 5: Put labelText on the Cleanup Stack using
- // CleanupStack::PushL(labelText);
- // Alternatively HBufC::NewLC(KTextCleanupStackTest().Length()) could
- // be called instead of HBufC::NewL(KTextCleanupStackTest().Length())
- *labelText = KTextCleanupStackTest; // Initialise the heap string
- // Edit 4: Uncomment the line below
- // User::Leave(KErrNoMemory); // mimic the effect of SetTextL() below leaving
- iBottomLabel->SetTextL(*labelText);
- // Edit 6: Replace the following line with CleanupStack::PopAndDestroy();
- delete labelText;
- }
- // ---------------------------------------------------------
- // CS60MemoryLabContainer::SizeChanged()
- // Called by framework when the view size is changed
- // ---------------------------------------------------------
- //
- void CS60MemoryLabContainer::SizeChanged()
- {
- // Set the position and size of the labels so they can
- // hold all the text
- TRect rect = Rect();
-
- iTopLabel->SetExtent( TPoint(0,0), TSize(Rect().Width(), Rect().Height()/2));
- iBottomLabel->SetExtent( TPoint(0,Rect().Height()/2), TSize(Rect().Width(),Rect().Height()/2));
- }
- // ---------------------------------------------------------
- // CS60MemoryLabContainer::CountComponentControls() const
- // ---------------------------------------------------------
- //
- TInt CS60MemoryLabContainer::CountComponentControls() const
- {
- return 2; // return nbr of controls inside this container
- }
- // ---------------------------------------------------------
- // CS60MemoryLabContainer::ComponentControl(TInt aIndex) const
- // ---------------------------------------------------------
- //
- CCoeControl* CS60MemoryLabContainer::ComponentControl(TInt aIndex) const
- {
- switch ( aIndex )
- {
- case 0:
- return iTopLabel;
- case 1:
- return iBottomLabel;
- default:
- return NULL;
- }
- }
- // ---------------------------------------------------------
- // CS60MemoryLabContainer::Draw(const TRect& aRect) const
- // ---------------------------------------------------------
- //
- void CS60MemoryLabContainer::Draw(const TRect& aRect) const
- {
- CWindowGc& gc = SystemGc();
- gc.SetPenStyle(CGraphicsContext::ENullPen);
- gc.SetBrushColor(KRgbGray);
- gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
- gc.DrawRect(aRect);
- }
- // ---------------------------------------------------------
- // CS60MemoryLabContainer::HandleControlEventL(
- // CCoeControl* aControl,TCoeEvent aEventType)
- // ---------------------------------------------------------
- //
- void CS60MemoryLabContainer::HandleControlEventL(
- CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
- {
- // Do nothing
- }
-
- // End of File