/*

* Copyright (c) 2006-2007 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:   Implementation of CHuiBrush. Brushes augment visuals with 

*                graphical effects.

*

*/

#include "uiacceltk/HuiBrush.h"

#include "uiacceltk/HuiGc.h"

#include "uiacceltk/HuiVisual.h"

#include "uiacceltk/HuiStatic.h"

#include "uiacceltk/HuiProbe.h"

#include "uiacceltk/HuiUtil.h"

EXPORT_C CHuiBrush::CHuiBrush()

        : iOpacity(1.0f), iEnabled(ETrue), iChanged(EFalse) 

    {

    HUI_PROBE_ASSOCIATE_WITH_CURRENT_SESSION

    HUI_PROBE_REPORT_CONSTRUCTED

    }

EXPORT_C CHuiBrush::~CHuiBrush()

    {

    iGuideVisual = NULL;

    HUI_PROBE_REPORT_DESTRUCTED

    }

EXPORT_C void CHuiBrush::ExpandVisualRect(TRect& /*aRect*/) const

    {

    // The brush does not expand the rectangle by default.

    }

EXPORT_C void CHuiBrush::SetChanged()

    {

    iChanged = ETrue;

    }

EXPORT_C TBool CHuiBrush::Changed() const

    {

    if ( iChanged )

        {

        return ETrue;

        }

    return iOpacity.Changed();

    }

EXPORT_C void CHuiBrush::ClearChanged()

    {

    iChanged = EFalse;

    iOpacity.ClearChanged();

    }

EXPORT_C void CHuiBrush::SetClipToVisual(TBool aClipToVisual)

    {

    iClipToVisual = aClipToVisual;

    }

EXPORT_C TBool CHuiBrush::ClipToVisual() const

    {

    return iClipToVisual;

    }

EXPORT_C void CHuiBrush::SetLayer(THuiBrushLayer aLayer)

    {

    iLayer = aLayer;

    }

EXPORT_C THuiBrushLayer CHuiBrush::Layer() const

    {

    return iLayer;

    }

EXPORT_C void CHuiBrush::BeginDraw(CHuiGc& aGc, const MHuiBrushGuide& aGuide) const

    {

    if(iClipToVisual)

        {

        // Visual content clipping is affected by transformation.

        aGc.PushClip();

        aGc.Clip(aGuide.BrushRect());

        }

    }

EXPORT_C void CHuiBrush::Draw(CHuiGc& /*aGc*/, const MHuiBrushGuide& /*aGuide*/) const

    {

    }

EXPORT_C void CHuiBrush::EndDraw(CHuiGc& aGc, const MHuiBrushGuide& /*aGuide*/) const

    {

    if(iClipToVisual)

        {

        // Visual content clipping is affected by transformation.

        aGc.PopClip();

        }

    iChanged = EFalse;

    }

HUI_SESSION_OBJECT_IMPL_EXPORT(CHuiBrush, ETypeBrush)

EXPORT_C void CHuiBrush::BrushExtension(const TUid& /*aExtensionUid*/, TAny** /*aExtensionParameters*/)

    {

    }

void CHuiBrush::ActivateBrushGuide(const CHuiVisual* aNewGuide) const

    {

    iGuideVisual = const_cast<CHuiVisual*>(aNewGuide);     

    }

CHuiVisual* CHuiBrush::BrushGuide() const

    {

    return iGuideVisual;     

    }