richtexteditorcontainer.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 190 行

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

// INCLUDE FILES

// Class include
#include "RichTextEditorContainer.h"

// System includes
#include <barsread.h> // TResourceReader
#include <RichTextEditor.rsg> // resources
#include <StringLoader.h>

// User includes
#include "RichTextEditorRichTextEditor.h"

// CONSTANTS

// N.B. #define'd as DLL cannot contain writeable static data
#define KEditorPosition TPoint(0,0) 

// ================= 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 CRichTextEditorContainer::ConstructL(const TRect& aRect)
{
    CreateWindowL();
    
    iEditor = CRichTextEditorRichTextEditor::NewL();
    iEditor->SetContainerWindowL(*this);
    AddTextToEditorL();
    SetRect(aRect);
    ActivateL();
    iEditor->DisplayStartOfHelpTextL();

}

/**
* Reads the text from the resource file and adds it to the rich text editor, setting the formatting as 
* appropriate.
*/
void CRichTextEditorContainer::AddTextToEditorL()
{
    if (iEditor)
    {
        HBufC* header1 = StringLoader::LoadLC (R_RICHTEXTEDITOR_HELP_HEADER1);
        iEditor->SetUnderlineOn(ETrue);
        iEditor->SetBoldOn(ETrue);
        iEditor->AddTextL (*header1); 
        CleanupStack::PopAndDestroy(header1);
        iEditor->AddCarriageReturnL();
        iEditor->SetUnderlineOn(EFalse);
        iEditor->SetBoldOn(EFalse);

        HBufC* text1 = StringLoader::LoadLC (R_RICHTEXTEDITOR_HELP_TEXT1);
        iEditor->AddTextL (*text1);
        iEditor->AddCarriageReturnL();
        iEditor->AddCarriageReturnL();
        CleanupStack::PopAndDestroy(text1);

        HBufC* header2 = StringLoader::LoadLC (R_RICHTEXTEDITOR_HELP_HEADER2);
        iEditor->SetUnderlineOn(ETrue);
        iEditor->SetBoldOn(ETrue);
        iEditor->AddTextL (*header2); 
        CleanupStack::PopAndDestroy(header2);
        iEditor->AddCarriageReturnL();
        iEditor->SetUnderlineOn(EFalse);
        iEditor->SetBoldOn(EFalse);

        HBufC* text2 = StringLoader::LoadLC (R_RICHTEXTEDITOR_HELP_TEXT2);
        iEditor->AddTextL (*text2);
        iEditor->AddCarriageReturnL();
        iEditor->AddCarriageReturnL();
        CleanupStack::PopAndDestroy(text2);
    }
}

/**
* Symbian OS 2 phase constructor.
* Constructs the CRichTextEditorContainer 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 CRichTextEditorContainer
*/
CRichTextEditorContainer* CRichTextEditorContainer::NewL(const TRect& aRect)
{
    CRichTextEditorContainer* self = CRichTextEditorContainer::NewLC(aRect);
    CleanupStack::Pop(self);
    return self;
}

/**
* Symbian OS 2 phase constructor.
* Constructs the CRichTextEditorContainer 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 CRichTextEditorContainer
*/
CRichTextEditorContainer* CRichTextEditorContainer::NewLC(const TRect& aRect)
{
    CRichTextEditorContainer* self = new (ELeave) CRichTextEditorContainer;
    CleanupStack::PushL(self);
    self->ConstructL(aRect);
    return self;
}

/** 
* Destructor.  Frees up memory for the iEditor.
*/
CRichTextEditorContainer::~CRichTextEditorContainer()
{
    delete iEditor;
}

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

/**
* Called by the framework in compound controls    
* @return The number of controls in this CRichTextEditorContainer
*/
TInt CRichTextEditorContainer::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* CRichTextEditorContainer::ComponentControl(TInt aIndex) const
{
    switch (aIndex)
    {
        case 0:
            return iEditor;
        default:
            return NULL;
    }
}

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

/**
* Called by the framework whenever a key event occurs.    
* Passes the key event to the editor if it is not null, otherwise returns
* EKeyWasNotConsumed
* @param aKeyEvent the Key event which occured, e.g. select key pressed
* @param aType the type of Key event which occurred, e.g. key up, key down
* @return TKeyResponse EKeyWasNotConsumed if the key was not processed, EKeyWasConsumed if it was
*/
TKeyResponse CRichTextEditorContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
{
    if (iEditor)
        return iEditor->OfferKeyEventL(aKeyEvent, aType);
    else 
        return CCoeControl::OfferKeyEventL(aKeyEvent, aType);
}

// End of File