Categories: Symbian C++ | Code Examples | UI

This page was last modified 18:04, 18 June 2008.

From Forum Nokia Wiki

CEditorContainer illustrates a simple container which you can use to add an editor into your project.

To modify the font used with the editor you can select another font in the CreateEditorL() method instead of LatinBold16(). The font color can be set by changing the KRgbBlack constant used in the TCharFormat.

Note that using a rich text editor can cause wasted resources if you don't need different paragraph or character formatting. In these cases you should use CEikEdwin which will allow you to set the font and color for the whole text. Also you could use CEikRichTextEditor directly or derive from it rather than using a container within a container.

Editor_Container.cpp

#include<Editor_container.h>
void CEditorContainer::ConstructL(void)
{
	CreateWindowL();
	
	SetRect(CEikonEnv::Static()->EikAppUi()->ClientRect());
	
	CreateEditorL();
	
	ActivateL();
}
 
void CEditorContainer::CreateEditorL(void)
{
	iEditor = new (ELeave) CEikRichTextEditor;		
	iEditor->SetAknEditorFlags(EAknEditorFlagEnableScrollBars);
	iEditor->SetContainerWindowL(*this);
	iEditor->SetAvkonWrap(ETrue);
	iEditor->ConstructL(this,0,0,0);
		
	iEditor->SetFocus(ETrue);
	iEditor->EnableCcpuSupportL(ETrue);
	iEditor->SetCursorPosL(0, EFalse);
	iEditor->SetAvkonWrap(ETrue);
	
	TFontSpec fontspec = LatinBold16()->FontSpecInTwips();
	TCharFormat charFormat( fontspec.iTypeface.iName, fontspec.iHeight );
	TCharFormatMask charFormatMask;
 
	charFormat.iFontPresentation.iTextColor = KRgbBlack;
	charFormatMask.SetAttrib(EAttColor);
	
	charFormatMask.SetAttrib(EAttFontTypeface);
	charFormatMask.SetAttrib(EAttFontHeight);
	iEditor->ApplyCharFormatL(charFormat, charFormatMask);
		
	iEditor->UpdateScrollBarsL();
	SizeChanged();
}
 
 
CEditorContainer::~CEditorContainer()
{
	delete iEditor;
}
 
void CEditorContainer::HandleResourceChange(TInt aType)
{
	TRect rect;
	
	if ( aType==KEikDynamicLayoutVariantSwitch )
	{  	
		AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EMainPane, rect );
		SetRect(rect);
 	}
 	
	CCoeControl::HandleResourceChange(aType);
}
 
void CEditorContainer::SizeChanged()
{
	TRect rect = Rect();
	
	if(iEditor)
	{
	#ifdef __SERIES60_3X__
		TRect ScrollBarRect = iEditor->ScrollBarFrame()->
VerticalScrollBar()->Rect();
		iEditor->SetExtent(TPoint(0,StatusLineHeight), 
		TSize(rect.Width()-ScrollBarRect.Width(), rect.Height()-StatusLineHeight));
	#else
		iEditor->SetExtent(TPoint(0,StatusLineHeight), 
		TSize(rect.Width(), rect.Height()-StatusLineHeight));
	#endif
	}
}
 
TInt CEditorContainer::CountComponentControls() const
{
	if(iEditor)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}
 
CCoeControl* CEditorContainer::ComponentControl(TInt /*aIndex*/) const
{
	return iEditor;
}
 
void CEditorContainer::Draw(const TRect& aRect) const
{
	CWindowGc& gc = SystemGc();
	gc.Clear();
}
 
TKeyResponse CEditorContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,
TEventCode aType)
{
	TKeyResponse Ret(EKeyWasNotConsumed);
	
	if (iEditor)
	{
		Ret = iEditor->OfferKeyEventL(aKeyEvent, aType);	
	}
 
	return Ret;
}
	
void CEditorContainer::SetEditorTextL(const TDesC& aText)
{
	if (iEditor)
	{
		iEditor->ClearSelectionL();	
		iEditor->RichText()->Reset();
		
		iEditor->RichText()->InsertL(0,aText);
		iEditor->RichText()->InsertL(iEditor->RichText()->
LdDocumentLength(),CEditableText::ELineBreak);
	
		iEditor->UpdateScrollBarsL();
		iEditor->DrawNow();
	}
}

Editor_Container.h

class CEditorContainer : public CCoeControl
    {
    public: 
        void ConstructL(void);
        ~CEditorContainer();
        void SetEditorTextL(const TDesC& aText);
    public: 
		TInt CountComponentControls() const;
        CCoeControl* ComponentControl(TInt aIndex) const;
    	TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);   
    private: 
    	void CreateEditorL(void);
        virtual void SizeChanged();
		virtual void HandleResourceChange(TInt aType);
        void Draw(const TRect& aRect) const;
    private: 
		CEikRichTextEditor* iEditor;
    };