/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*/

// INCLUDE FILES

#include <AknBidiTextUtils.h>

#include <aknnotewrappers.h>

#include <eiksbfrm.h>

const TUint KLeftMargin = 2;

const TUint KRightMargin = 2;

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

void CLauncherContainerOutput::ConstructL(const TRect& aRect, CLauncherEngine* aEngine)

    {

    iEngine = aEngine;

    CreateWindowL();

    Window().SetShadowDisabled(EFalse);

    SetBlank();

    iText = HBufC::NewL(200000);

    iCurrentLine = 0;

    iLineCount = 0;

    iNumberOfLinesFitsScreen = 0;

    iX_factor = 1;

    iY_factor = 1;

    iLeftDrawingPosition = KLeftMargin;

    iFont = AknLayoutUtils::FontFromId(EAknLogicalFontSecondaryFont);

    iWrappedArray = new(ELeave) CArrayFixFlat<TPtrC>(500);

    SetRect(aRect);

    //ActivateL(); 

    PrintTextL(_L("Ready.\n\n"));

    }

CLauncherContainerOutput::~CLauncherContainerOutput()

    {

    if (iWrappedArray)

        {

        iWrappedArray->Reset();

        delete iWrappedArray;

        }

    if (iText)

        delete iText;

    if (iScrollBarFrame)

        delete iScrollBarFrame;

    if (iWrapperString)

        delete iWrapperString;

    }

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

// CLauncherContainerOutput::UpdateVisualContentL()

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

//

void CLauncherContainerOutput::UpdateVisualContentL(TBool aScrollToBottom, TBool aScrollToTop)

    {

    TSize rectSize;

    AknLayoutUtils::LayoutMetricsSize(AknLayoutUtils::EMainPane, rectSize);

    TRect rect(rectSize);

    // init scroll bar if not yet done

    if (!iScrollBarFrame)

        {

        iScrollBarFrame = new(ELeave) CEikScrollBarFrame(this, this, ETrue);

        CAknAppUi* appUi = iAvkonAppUi;

	    if (AknLayoutUtils::DefaultScrollBarType(appUi) == CEikScrollBarFrame::EDoubleSpan)

	        {

		    iScrollBarFrame->CreateDoubleSpanScrollBarsL(ETrue, EFalse);            

		    iScrollBarFrame->SetTypeOfVScrollBar(CEikScrollBarFrame::EDoubleSpan);

	        }

	    else

	        {

		    iScrollBarFrame->SetTypeOfVScrollBar(CEikScrollBarFrame::EArrowHead);

	        }  

	    iScrollBarFrame->SetScrollBarVisibilityL(CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);

        }

    // drawing positions, needed for scalable ui

    iX_factor = TReal(rect.Width()) / 176;

    iY_factor = TReal(rect.Height()) / 144;

    iWrappedArray->Reset();

    if (iWrapperString)

        {

        delete iWrapperString;

        iWrapperString = NULL;

        }

    // define drawing width, some extra space needed if using double span scrolling bar

    TUint drawingWidth(0);

    if (iScrollBarFrame->TypeOfVScrollBar() == CEikScrollBarFrame::EDoubleSpan)

        {

        if (AknLayoutUtils::LayoutMirrored())  // scroll bar on 'left'

            {

            iLeftDrawingPosition = KLeftMargin + 12;

            drawingWidth = TInt( rect.Width() - iLeftDrawingPosition*iX_factor - (KRightMargin*iX_factor)); 

            }

        else // scroll bar on 'right'

            {

            iLeftDrawingPosition = KLeftMargin;  

            drawingWidth = TInt( rect.Width() - iLeftDrawingPosition*iX_factor - (KRightMargin*iX_factor + 7*iX_factor)); 

            }        

        }

    else

        drawingWidth = TInt( rect.Width() - KLeftMargin*iX_factor - KRightMargin*iX_factor);

    // wrap the text

    iWrapperString = AknBidiTextUtils::ConvertToVisualAndWrapToArrayL(

        iText->Des(),

        drawingWidth,

        *iFont,

        *iWrappedArray

        );

    iLineCount = iWrappedArray->Count();

    // count amount of lines fits to screen

    iNumberOfLinesFitsScreen = TInt(rect.Height() / (iFont->HeightInPixels()));

    // check if needed to scroll to the bottom

    if (aScrollToBottom )

        {

        if( iCurrentLine < iLineCount - iNumberOfLinesFitsScreen)

            {

            iCurrentLine = iLineCount-iNumberOfLinesFitsScreen;

            }

        }

    else if( aScrollToTop )

        {

        iCurrentLine = 0;

        }

    // update the scroll bars

	TEikScrollBarModel horizontalBar;

    TEikScrollBarModel verticalBar;

    verticalBar.iThumbPosition = iCurrentLine;

    verticalBar.iScrollSpan = iLineCount - iNumberOfLinesFitsScreen + 1;

    verticalBar.iThumbSpan = 1;

    TEikScrollBarFrameLayout layout;

	layout.iTilingMode = TEikScrollBarFrameLayout::EInclusiveRectConstant;

    if (iScrollBarFrame->TypeOfVScrollBar() == CEikScrollBarFrame::EDoubleSpan)

        {    

        // do not let scrollbar values overflow

        if (verticalBar.iThumbPosition + verticalBar.iThumbSpan > verticalBar.iScrollSpan)

            verticalBar.iThumbPosition = verticalBar.iScrollSpan - verticalBar.iThumbSpan;

        TAknDoubleSpanScrollBarModel horizontalDSBar(horizontalBar);

        TAknDoubleSpanScrollBarModel verticalDSBar(verticalBar);

        iScrollBarFrame->TileL(&horizontalDSBar, &verticalDSBar, rect, rect, layout);        

        iScrollBarFrame->SetVFocusPosToThumbPos(verticalDSBar.FocusPosition());

	    }  

	else

	    {

		iScrollBarFrame->TileL( &horizontalBar, &verticalBar, rect, rect, layout );

		iScrollBarFrame->SetVFocusPosToThumbPos( verticalBar.iThumbPosition );

	    }

    // update the screen

    DrawNow();

    }

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

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

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

//

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

    {

    CWindowGc& gc = SystemGc();

    gc.Clear(aRect);

    gc.SetPenColor(KRgbBlack);

    gc.UseFont(iFont);

    // draw the text

    for (TInt i=0; i<iNumberOfLinesFitsScreen; i++)

        {

        // index out of bounds check and then draw text

        if (i+iCurrentLine < iWrappedArray->Count())

            gc.DrawText(iWrappedArray->At(i+iCurrentLine), TPoint(TInt(iLeftDrawingPosition*iX_factor), TInt(iFont->HeightInPixels()*(i+1))));

        }

    }

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

// CLauncherContainerOutput::HandleControlEventL(

//     CCoeControl* aControl,TCoeEvent aEventType)

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

//

void CLauncherContainerOutput::HandleControlEventL(

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

    {

    }

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

// CLauncherContainerOutput::PrintTextL(const TDesC& aDes)

// Print text into output window.

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

//

void CLauncherContainerOutput::PrintTextL(const TDesC& aDes)

    {

    iText->Des().Append( aDes );

    UpdateVisualContentL(ETrue);

    }

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

// CLauncherContainerOutput::OfferKeyEventL(const TKeyEvent& aKeyEvent,

//                                    TEventCode aType)

// Handle key event. Only up and down key arrow events are

// consumed in order to enable scrolling in output window.

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

//

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

    {

    if(aType != EEventKey)

        return EKeyWasNotConsumed;

    if(aKeyEvent.iCode == EKeyUpArrow)

        {

        if (iCurrentLine > 0)

            {

            iCurrentLine--;

            UpdateVisualContentL(EFalse);

            }

        return EKeyWasConsumed;

        }

    else if(aKeyEvent.iCode == EKeyDownArrow)

        {

        if (iCurrentLine < iLineCount - iNumberOfLinesFitsScreen)

            {

            iCurrentLine++;

            UpdateVisualContentL(EFalse);

            }

        return EKeyWasConsumed;

        }

    return EKeyWasNotConsumed;

    }

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

// CLauncherContainerOutput::ClearOutputWindowL()

// Clear the output window.

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

//

void CLauncherContainerOutput::ClearOutputWindowL()

    {

    iText->Des() = _L("");

    UpdateVisualContentL(EFalse, ETrue);

    }

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

// CLauncherContainerOutput::HandleResourceChange(TInt aType)

// Handle layout change of the screen

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

//

void CLauncherContainerOutput::HandleResourceChange(TInt aType)

    {

    if ( aType == KEikDynamicLayoutVariantSwitch )

        {

        TRect mainPaneRect;

        AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane, mainPaneRect);

        SetRect(mainPaneRect);

        iCurrentLine = 0; // scroll to top

        // update font

        iFont = AknLayoutUtils::FontFromId(EAknLogicalFontSecondaryFont);

        // delete the scroll and update screen

        if (iScrollBarFrame)

            {

            delete iScrollBarFrame;

            iScrollBarFrame = NULL;

            }

        TRAP_IGNORE(UpdateVisualContentL(EFalse));

        }

    else

        {

        CCoeControl::HandleResourceChange(aType);

        }

    }

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

// CLauncherContainerOutput::HandleScrollEventL()

// Capture touch events on the scroll bar

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

//

void CLauncherContainerOutput::HandleScrollEventL(CEikScrollBar* aScrollBar, TEikScrollEvent aEventType)

    {

    // only on page up/down,scroll up/down and drag events

    if ((aEventType == EEikScrollPageDown) || (aEventType == EEikScrollPageUp) || 

       (aEventType == EEikScrollThumbDragVert) || (aEventType == EEikScrollUp) ||

       (aEventType == EEikScrollDown))

        {

        // get the current position from the scroll bar

        iCurrentLine = aScrollBar->ThumbPosition();

        // refresh now

        UpdateVisualContentL(EFalse);

        }

    }

// End of File