chinesedisplaycontainer.cpp

symbian s60 2nd上的中文显示实现

/*
* ============================================================================
*  Name     : CChineseDisplayContainer from CChineseDisplayContainer.h
*  Part of  : ChineseDisplay
*  Created  : 18.3.2003 by Forum Nokia
*  Implementation notes:
*  Version  :
*  Copyright: Nokia Corporation, 2003
* ============================================================================
*/

#include "ChineseDisplayContainer.h"

#include <eiklabel.h>  	// for example label control
#include <eikenv.h>
#include <gdi.h>	   	// TFontSpec
#include <charconv.h> 	 // CCnvCharacterSetConverter
#include <ChineseDisplay.rsg>
#include "ChineseDisplayAppUi.h"

// ---------------------------------------------------------
// ChineseDisplayAppContainer::ConstructL(const TRect& aRect)
// Second phase constructor
// ---------------------------------------------------------
//
void CChineseDisplayContainer::ConstructL(const TRect& aRect)
    {
    CreateWindowL();

    iLabel = new (ELeave) CEikLabel;
    iLabel->SetContainerWindowL( *this );

	CFont *font;

  	CWsScreenDevice  *aDeviceMap = iEikonEnv->ScreenDevice();

	TInt height = 200;    // The font size in twips 
	TFontSpec fontSpec(_L( "System"), height );

	// If the proper font libaray exist, can call the specific font 
	// TFontSpec fontSpec(_L("MS Song"), height );
	User::LeaveIfError(aDeviceMap->GetNearestFontInTwips(font, fontSpec));

	// Use system font
	iLabel->SetFont( font );
    aDeviceMap->ReleaseFont( font );

	TBuf<64> buf;
	CEikonEnv::Static()->ReadResource( buf, R_EXAMPLE_VIEW_TITLE );
	iLabel->SetTextL( buf );

    iToDoLabel = new (ELeave) CEikLabel;
    iToDoLabel->SetContainerWindowL( *this );
	CEikonEnv::Static()->ReadResource( buf, R_EXAMPLE_ADD_CONTROL_HERE );

	// Read in the hello text
	iHelloText = iEikonEnv->AllocReadResourceL(R_EXAMPLE_TEXT_HELLO);

	CCnvCharacterSetConverter* converter=CCnvCharacterSetConverter::NewLC();
	// Check if there is conversion between GBK/GB2312 and unicode 
	// if(converter->PrepareToConvertToOrFromL(KCharacterSetIdentifierGb2312,
	if(converter->PrepareToConvertToOrFromL(KCharacterSetIdentifierGbk,
		iEikonEnv->FsSession())!=CCnvCharacterSetConverter::EAvailable)
		User::Leave(KErrNotSupported);

	// The following string is "Nokia 7650C" in Chinese
	TText8  *str = (TText8*)"诺基亚7650C";
    TInt state=CCnvCharacterSetConverter::KStateDefault;

	TPtrC8 source( str );
	iInfoText = HBufC::NewL( source.Length() );
	TPtr16 ptr = iInfoText->Des();

	if(CCnvCharacterSetConverter::EErrorIllFormedInput == converter->ConvertToUnicode(ptr, source, state))
		User::Leave(KErrArgument);  //Leave if error in conversion.

	iToDoLabel->SetTextL( ptr );

	CleanupStack::PopAndDestroy();  //clean for converter

    SetRect(aRect);
    ActivateL();
    }

// ---------------------------------------------------------
// ChineseDisplayAppContainer::~ChineseDisplayAppContainer
// Destructor
// ---------------------------------------------------------
//
CChineseDisplayContainer::~CChineseDisplayContainer()
    {
	delete iHelloText;
    delete iLabel;
    delete iToDoLabel;
	delete iInfoText;
    }

// ---------------------------------------------------------
// ChineseDisplayAppContainer::ChangeLabelsL()
// Change the label fonts and contents.
// ---------------------------------------------------------
//
void CChineseDisplayContainer::ChangeLabelsL()
    {
	CFont *font;

	// Use Annotation font
	font = (CFont*)iEikonEnv->AnnotationFont();
	iLabel->SetFont( font );
	iLabel->SetTextL( *iHelloText );
	
	// Use Title font
	font = (CFont*)iEikonEnv->TitleFont();
	iToDoLabel->SetFont( font );
	iToDoLabel->SetTextL( *iHelloText );

	SizeChanged();

    }
// ---------------------------------------------------------
// ChineseDisplayAppContainer::SizeChanged()
// Called by framework when the view size is changed
// ---------------------------------------------------------
//
void CChineseDisplayContainer::SizeChanged()
    {
    iLabel->SetExtent( TPoint( 10,10 ), iLabel->MinimumSize() );
    iToDoLabel->SetExtent( TPoint( 10, 100 ), iToDoLabel->MinimumSize() );
    }

// ---------------------------------------------------------
// ChineseDisplayAppContainer::CountComponentControls() const
// Return number of controls inside this container. Called by
// the framework.
// ---------------------------------------------------------
//
TInt CChineseDisplayContainer::CountComponentControls() const
    {
    return 2; // return nbr of controls inside this container
    }

// ---------------------------------------------------------
// ChineseDisplayAppContainer::ComponentControl(TInt aIndex) const
// Return the control pointers according to the index. Called 
// by the GUI framework.
// ---------------------------------------------------------
//
CCoeControl* CChineseDisplayContainer::ComponentControl( TInt aIndex ) const
    {
    switch ( aIndex )
        {
        case 0:
            return iLabel;
        case 1:
            return iToDoLabel;
        default:
            return NULL;
        }
    }

// ---------------------------------------------------------
// ChineseDisplayAppContainer::Draw(const TRect& aRect) const
// Draw the screen.
// ---------------------------------------------------------
//
void CChineseDisplayContainer::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();

    gc.SetPenStyle(CGraphicsContext::ESolidPen);
    gc.SetBrushColor(KRgbGray);
    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
    gc.DrawRect(aRect);


	CFont *font;

  	CWsScreenDevice  *aDeviceMap = iEikonEnv->ScreenDevice();

	// The following font may not be displayed exactly what you want 
	// in a real device if the font library is not available. You may 
	// copy the font library from a 9210 SDK to the following directory:
	// \Symbian\6.1\Series60\Epoc32\Release\wins\UDEB\Z\SYSTEM\Fonts.
	// In this case, you may see the font change.
	TInt height = 600;   // Height in twips
	TFontSpec fontSpec( _L("PrcPlain12"),  height );

	// If the proper font libaray exist, can call the specific font 
	// TFontSpec fontSpec(_L("MS Song"), height );
	User::LeaveIfError( aDeviceMap->GetNearestFontInTwips( font, fontSpec ) );

	TRect rect=Rect();

	// Use system font
	gc.UseFont( font );
	TInt baseline = rect.Height()/2 + font->AscentInPixels()/2 - 10;
	gc.DrawText( *iHelloText, rect, baseline, CGraphicsContext::ECenter );
    aDeviceMap->ReleaseFont( font );
    }

// ---------------------------------------------------------
// ChineseDisplayAppContainer::HandleControlEventL(
// CCoeControl* aControl,TCoeEvent aEventType)
// ---------------------------------------------------------
//
void CChineseDisplayContainer::HandleControlEventL(
    CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
    {
    }

// End of File