/*

* Copyright (c) 1997-1999 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 <eikmover.h>

#include <barsread.h>

#include <eikenv.h>

#include <gulcolor.h>

const TInt KEikMoverMargin=3; 

const TInt KEikMoverTextPadding=10;

const TInt KEikMoverMinLineLength=10;

enum TEikMoverFlags

	{

	EEikMoverActive		=0x01,

	EEikMoverPressed	=0x02

	};

/**

 * Gets the list of logical colors employed in the drawing of the control,

 * paired with an explanation of how they are used. Appends the list to aColorUseList.

 *

 * @since ER5U 

 */

EXPORT_C void CEikMover::GetColorUseListL(CArrayFix<TCoeColorUse>& /*aColorUseList*/) const

	{

	}

/**

 * Handles a change to the control's resources of type aType

 * which are shared across the environment, e.g. colors or fonts.

 *

 * @since ER5U 

 */

EXPORT_C void CEikMover::HandleResourceChange(TInt aType)

	{

	CCoeControl::HandleResourceChange(aType);

	}

EXPORT_C CEikMover::~CEikMover()

    {

    delete(iText);

    }

EXPORT_C CEikMover::CEikMover()

	{

	__DECLARE_NAME(_S("CEikMover"));

	SetNonFocusing();

	iFont=iEikonEnv->NormalFont();

	iTitleLeftMargin = KEikMoverMargin;

	}

EXPORT_C void CEikMover::SetContainerWindowL(const CCoeControl& aContainer)

	{

	CCoeControl::SetContainerWindowL(aContainer);

	iParentControl=&((CCoeControl&)aContainer);

	}

EXPORT_C void CEikMover::SetTitleLeftMargin(TInt aLeftMargin)

	{

	iTitleLeftMargin = aLeftMargin;

	}

EXPORT_C void CEikMover::SetText(HBufC* aText)

    {

	if (iText!=aText)

		delete iText;

    iText=aText;

    }

EXPORT_C void CEikMover::SetTextL(const TDesC& aText)

    {

    HBufC* tmp=aText.AllocL();

    delete(iText);

    iText=tmp;

    }

EXPORT_C void CEikMover::ConstructFromResourceL(TResourceReader& aReader)

    {

    iText=aReader.ReadHBufCL();

    }

EXPORT_C void CEikMover::SetActive(TBool aActive)

	{

	if (aActive)

		iMoverFlags|=EEikMoverActive;

	else

		iMoverFlags&=(~(EEikMoverActive|EEikMoverPressed));

	}

EXPORT_C TBool CEikMover::Active() const

	{

	return iMoverFlags&EEikMoverActive;

	}

EXPORT_C void CEikMover::SetFont(const CFont* aFont)

	{

	// if pointer is null use the title font

	iFont=(aFont)? aFont : iEikonEnv->NormalFont();

	}

EXPORT_C TSize CEikMover::MinimumSize()

    {

	TSize size;

    size.iWidth=2*KEikMoverMargin+2*KEikMoverTextPadding+2*KEikMoverMinLineLength;

	if (iText)

    	size.iWidth+=iFont->TextWidthInPixels(*iText);

    size.iHeight=iFont->HeightInPixels()+2*KEikMoverMargin;

	return size;

    }

EXPORT_C void CEikMover::Draw(const TRect& /*aRect*/) const

    {

    CWindowGc& gc=SystemGc();

    TRect rect=Rect();

    const TRgb bgColor=iEikonEnv->ControlColor((iMoverFlags&EEikMoverPressed? 

                                                EColorDialogTitlePressed : EColorDialogTitle),*this);

    const TRgb textColor=iEikonEnv->ControlColor((iMoverFlags&EEikMoverPressed?

                                                  EColorDialogTitleTextPressed : EColorDialogTitleText),*this);

    gc.SetBrushColor(bgColor);

    gc.Clear(rect);

    gc.SetPenColor(KRgbGray);

    gc.DrawLine(TPoint(rect.iTl.iX,rect.iBr.iY-1),TPoint(rect.iBr.iX,rect.iBr.iY-1));

    // TInt textWidth=iText? iFont->TextWidthInPixels(*iText): 0;

    TRect textRect=rect;

    textRect.iTl.iX += iTitleLeftMargin;

    //textRect.Shrink((Size().iWidth-(textWidth+2*KEikMoverMargin))/2,0);

    // draw the text

    gc.SetPenColor(textColor);

    gc.SetBrushStyle(CGraphicsContext::ENullBrush);

    gc.UseFont(iFont);

    const TInt ascent=iFont->AscentInPixels();

    const TInt fontHeight=iFont->HeightInPixels();

    const TInt offset=(textRect.Height()+1)/2+(ascent-((fontHeight+1)/2));

    gc.DrawText(iText? TPtrC(*iText): TPtrC(),textRect,offset,CGraphicsContext::ELeft);

    gc.DiscardFont();

    }

EXPORT_C void* CEikMover::ExtensionInterface( TUid /*aInterface*/ )

    {

    return NULL;

    }   

EXPORT_C void CEikMover::HandlePointerEventL(const TPointerEvent& aPointerEvent)

    {

	if (!Active())

		return;

    TBool recordPos=ETrue;

    TPoint pos=aPointerEvent.iParentPosition; // !! should be relative to screen not to parent (see below...)

    TPointerEvent::TType type=aPointerEvent.iType;

    if (type==TPointerEvent::EButton1Down)

		{

		iMoverFlags|=EEikMoverPressed;

		DrawNow();

		}

    else

        {

        TRect screenRect(TPoint(0,0),iEikonEnv->ScreenDevice()->SizeInPixels());

        screenRect.Shrink(2,2);

        if (!screenRect.Contains(pos)) // !! this assumes parent window is screen (see above...)

            recordPos=EFalse;

        else

            {

            TPoint offset=pos-iPointerDownPos;

            if (offset.iX || offset.iY)

                {

                TPoint origin=Window().Position();

				if (iParentControl)

					iParentControl->SetPosition(origin+offset);

                }

            }

        if (type==TPointerEvent::EButton1Up)

			{

			iMoverFlags&=(~EEikMoverPressed);

			DrawNow();

			}

        }

    if (recordPos)

        iPointerDownPos=pos;

    }

//

// Reserved functions from CCoeControl

//

/**

 * Writes the internal state of the control and its components to aStream.

 * Does nothing in release mode.

 * Designed to be overidden and base called by subclasses.

 *

 * @internal

 * @since App-Framework_6.1

 */

#ifndef _DEBUG

EXPORT_C void CEikMover::WriteInternalStateL(RWriteStream&) const

	{}

#else

EXPORT_C void CEikMover::WriteInternalStateL(RWriteStream& aWriteStream) const

	{

	CCoeControl::WriteInternalStateL(aWriteStream);

	}

#endif

EXPORT_C void CEikMover::Reserved_2()

	{

	}