/*

* 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:

*

* Defines custom drawing for text editor edwin.

*

*/

// INTERNAL INCLUDES

#include "CMIDTextEditorEdwinCustomDraw.h"

// EXTERNAL INCLUDES

#include <j2me/jdebug.h>

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

// CMIDTextEditorEdwinCustomDraw::CMIDTextEditorEdwinCustomDraw

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

//

CMIDTextEditorEdwinCustomDraw::CMIDTextEditorEdwinCustomDraw(

    const MLafEnv& aLafEnv,

    const MFormCustomDraw& aParentDraw,

    const CMIDTextEditorEdwin& aEdwin) :

        CLafEdwinCustomDrawBase(aLafEnv, aEdwin),

        iEdwin(aEdwin), iParentDraw(aParentDraw)

{

    DEBUG("CMIDTextEditorEdwinCustomDraw::CMIDTextEditorEdwinCustomDraw");

}

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

// CMIDTextEditorEdwinCustomDraw::~CMIDTextEditorEdwinCustomDraw

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

//

CMIDTextEditorEdwinCustomDraw::~CMIDTextEditorEdwinCustomDraw()

{

    DEBUG("CMIDTextEditorEdwinCustomDraw::~CMIDTextEditorEdwinCustomDraw");

}

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

// CMIDTextEditorEdwinCustomDraw::DrawBackground

// (other items were commented in the header file)

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

//

void CMIDTextEditorEdwinCustomDraw::DrawBackground(

    const TParam& aParam,

    const TRgb& aBackground,

    TRect& aDrawn) const

{

    // Background drawing is not done by custom draw.

    // Check if CCoeControl::Draw() has been invoked for the editor window.

    // This guarantees that draw is not invoked all the time. Redraw

    // removes the issue with background transparency because if FEP tries

    // to draw the text without the CONE control framework, the editor gets

    // redrawn which guarantees that the text is not messed up due to

    // the editor's transparency.

    if (iEdwin.IsTransparent())

    {

        iEdwin.Redraw();

    }

    else

    {

        // If scaling is on, it clips drawing to canvas size. After it

        // draws its background.

        // Only drawing otherwise.

        if (iEdwin.IsScalingOn())

        {

            aParam.iGc.SetClippingRect(GetClippingRectForScaling());

            iParentDraw.DrawBackground(aParam, aBackground, aDrawn);

            aParam.iGc.CancelClippingRect();

        }

        else

        {

            iParentDraw.DrawBackground(aParam, aBackground, aDrawn);

        }

    }

}

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

// CMIDTextEditorEdwinCustomDraw::DrawLineGraphics

// (other items were commented in the header file)

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

//

void CMIDTextEditorEdwinCustomDraw::DrawLineGraphics(

    const TParam& aParam,

    const TLineInfo& aLineInfo) const

{

    // If scaling is on, it clips drawing to canvas size. After it

    // draws its lines.

    // Only drawing otherwise.

    if (iEdwin.IsScalingOn())

    {

        aParam.iGc.SetClippingRect(GetClippingRectForScaling());

        iParentDraw.DrawLineGraphics(aParam, aLineInfo);

        aParam.iGc.CancelClippingRect();

    }

    else

    {

        iParentDraw.DrawLineGraphics(aParam, aLineInfo);

    }

}

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

// CMIDTextEditorEdwinCustomDraw::DrawText

// (other items were commented in the header file)

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

//

void CMIDTextEditorEdwinCustomDraw::DrawText(

    const TParam& aParam,

    const TLineInfo& aLineInfo,

    const TCharFormat& aFormat,

    const TDesC& aText,

    const TPoint& aTextOrigin,

    TInt aExtraPixels) const

{

    // If transparency is enabled, check that if draw has not been invoked

    // yet and issue redraw in that case. This removes the issue with

    // transparency so that the old content does not cause corruption to

    // the new text drawn on top of the old content. Otherwise it is ok

    // to draw the text because opaque background draws on top of the old

    // content in the editor.

    if (iEdwin.IsTransparent() && !iEdwin.DrawOngoing())

    {

        iEdwin.Redraw();

        return;

    }

    // If scaling is on, it clips drawing to canvas size. After it

    // draws its text.

    // Only drawing otherwise.

    if (iEdwin.IsScalingOn())

    {

        aParam.iGc.SetClippingRect(GetClippingRectForScaling());

        iParentDraw.DrawText(

            aParam,

            aLineInfo,

            aFormat,

            aText,

            aTextOrigin,

            aExtraPixels);

        aParam.iGc.CancelClippingRect();

    }

    else

    {

        iParentDraw.DrawText(

            aParam,

            aLineInfo,

            aFormat,

            aText,

            aTextOrigin,

            aExtraPixels);

    }

}

#ifdef RD_JAVA_S60_RELEASE_9_2

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

// CMIDTextEditorEdwinCustomDraw::DrawText

// (other items were commented in the header file)

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

//

void CMIDTextEditorEdwinCustomDraw::DrawText(

    const TParam& aParam,

    const TLineInfo& aLineInfo,

    const TCharFormat& aFormat,

    const TDesC& aText,

    const TInt aStart,

    const TInt aEnd,

    const TPoint& aTextOrigin,

    TInt aExtraPixels) const

{

    // If transparency is enabled, check that if draw has not been invoked

    // yet and issue redraw in that case. This removes the issue with

    // transparency so that the old content does not cause corruption to

    // the new text drawn on top of the old content. Otherwise it is ok

    // to draw the text because opaque background draws on top of the old

    // content in the editor.

    if (iEdwin.IsTransparent() && !iEdwin.DrawOngoing())

    {

        iEdwin.Redraw();

        return;

    }

    // If scaling is on, it clips drawing to canvas size. After it

    // draws its text.

    // Only drawing otherwise.

    if (iEdwin.IsScalingOn())

    {

        aParam.iGc.SetClippingRect(GetClippingRectForScaling());

        iParentDraw.DrawText(

            aParam,

            aLineInfo,

            aFormat,

            aText,

            aStart,

            aEnd,

            aTextOrigin,

            aExtraPixels);

        aParam.iGc.CancelClippingRect();

    }

    else

    {

        iParentDraw.DrawText(

            aParam,

            aLineInfo,

            aFormat,

            aText,

            aStart,

            aEnd,

            aTextOrigin,

            aExtraPixels);

    }

}

#endif

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

// CMIDTextEditorEdwinCustomDraw::SystemColor

// (other items were commented in the header file)

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

//

TRgb CMIDTextEditorEdwinCustomDraw::SystemColor(

    TUint aColorIndex,

    TRgb aDefaultColor) const

{

    TRgb ret;

    // Return custom highlight color if retrieved by the system.

    if (aColorIndex == TLogicalRgb::ESystemSelectionBackgroundIndex)

    {

        iEdwin.GetColor(EColorControlHighlightBackground, ret);

    }

    else if (aColorIndex == TLogicalRgb::ESystemSelectionForegroundIndex)

    {

        iEdwin.GetColor(EColorControlHighlightText, ret);

    }

    else

    {

        // Other colors use parent's SystemColor.

        ret = iParentDraw.SystemColor(aColorIndex, aDefaultColor);

    }

    return ret;

}

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

// CMIDTextEditorEdwinCustomDraw::GetClippingRectForScaling()

// (other items were commented in the header file)

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

//

const TRect CMIDTextEditorEdwinCustomDraw::GetClippingRectForScaling() const

{

    // It gets intersection of editor and canvas rectangles.

    TRect rect = iEdwin.GetOnScreenCanvasRect();

    rect.Intersection(iEdwin.Rect());

    return rect;

}

// End of file