/*

* Copyright (c) 2007-2008 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:  Grid for smile icons

*

*/

// INCLUDE FILES

#include "cimcvappsmileicongrid.h"

#include "imcvappsmileutility.hrh"

#include <AknUtils.h>

#include <AknIconUtils.h>

#include <AknLayout.lag>

#include <gulicon.h>

#include <eikdialg.h>

#include <AknsDrawUtils.h>

#include <aknappui.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <AknDef.h>

#include "imcvlogger.h"

#include "imcvuiapputils.h"

#include "mimcvtapeventobserver.h"

// CONSTANTS

// The (KTopLeft_x,KTopLeft_y) and (KBottomRight_x,KBottomRight_y) are the co ordinates of the 

// topleft and bottomright points of the first cell in the grid.

// These co-ordinates to draw the grid lines and the logic to draw the grid lines is based on the topleft 

// and bottomright points of the first cell in the grid.

#define KTopLeft_x 56

#define KTopLeft_y 55

#define KBottomRight_x 105

#define KBottomRight_y 104

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

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

// CIMCVAppSmileIconGrid::NewL

// (other items were commented in a header).

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

// Two-phased constructor.

CIMCVAppSmileIconGrid* CIMCVAppSmileIconGrid::NewL( CEikDialog* aParent,

							    const RPointerArray<CGulIcon>& aIconArray )

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::NewL() start") );

    CIMCVAppSmileIconGrid* self = new (ELeave) CIMCVAppSmileIconGrid( aParent, 

                                                            aIconArray );

	CleanupStack::PushL( self );

	self->ConstructL();

	CleanupStack::Pop( self );

	IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::NewL() end") );

    return self;

    }

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

// CIMCVAppSmileIconGrid::~CIMCVAppSmileIconGrid

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

CIMCVAppSmileIconGrid::~CIMCVAppSmileIconGrid()

    {

    }

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

// CIMCVAppSmileIconGrid::CIMCVAppSmileIconGrid

// (other items were commented in a header).

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

// C++ constructor can NOT contain any code, that

// might leave.

//

CIMCVAppSmileIconGrid::CIMCVAppSmileIconGrid( CEikDialog* aParent,

                                    const RPointerArray<CGulIcon>& aIconArray )

:iParent( aParent ), iIconArray( aIconArray )

    {

    }

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

// CIMCVAppSmileIconGrid::ConstructL

// (other items were commented in a header).

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

//

// default constructor can leave.

void CIMCVAppSmileIconGrid::ConstructL()

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::ConstructL() start") );

	iIconCount = iIconArray.Count();

	iIsMirrored = ETrue ;

    SetContainerWindowL( *iParent );

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::ConstructL() end") );

    }

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

// CIMCVAppSmileIconGrid::MoveCursor

// Move cursor and redraw highlight.

// Called when arrow-key is pressed.

// (other items were commented in a header).

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

//

void CIMCVAppSmileIconGrid::MoveCursor( TInt aKeyCode )

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::MoveCursor() start") );

    iPrevCursorPos = iCursorPos;

    switch( aKeyCode )

        {

        case EKeyLeftArrow:

            {

			if( AknLayoutUtils::LayoutMirrored() )

				{

				iCursorPos++;

				if( iCursorPos >= iIconCount )

					{

					iCursorPos = 0;

					}

				}

			else

				{

				iCursorPos--;

				if( iCursorPos < 0 )

					{

					iCursorPos = iIconCount - 1;

					}

				}

            break;

            }

        case EKeyRightArrow:

            {

			if( AknLayoutUtils::LayoutMirrored() )

				{

				iCursorPos--;

				if( iCursorPos < 0 )

					{

					iCursorPos = iIconCount - 1;

					}

				}

			else

				{

				iCursorPos++;

				if( iCursorPos >= iIconCount )

					{

					iCursorPos = 0;

					}

				}

            break;

            }

        case EKeyUpArrow:

            {

			if( iCursorPos < iMaxColumns )

                {

                iCursorPos += ( iRowCount * iMaxColumns ) - 1;

                if( iCursorPos >= iIconCount )

                    {

                    iCursorPos -= iMaxColumns;

                    }

				if( iCursorPos < 0 )

					{

					iCursorPos = iIconCount - 1;

					}

				}

			else

				{

                iCursorPos -= iMaxColumns;

				}

            break;

            }

        case EKeyDownArrow:

            {

            if( iCursorPos < ( iIconCount - iMaxColumns ) )

                {

                iCursorPos += iMaxColumns;

                }

			else

				{

				iCursorPos %= iMaxColumns;

				iCursorPos++;

				if( iCursorPos >= iMaxColumns ||

					iCursorPos >= iIconCount )

					{

					iCursorPos = 0;

					}

				}

            break;

            }

        default:

            {

            return;

            }

        }

    DrawDeferred();

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::MoveCursor() end") );

    }

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

// CIMCVAppSmileIconGrid::SelectedBitmapId

// Called when OK-key or Select-softkey is pressed.

// (other items were commented in a header).

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

//

TInt CIMCVAppSmileIconGrid::SelectedBitmapId()

    {

    return iCursorPos;

    }

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

// CIMCVAppSmileIconGrid::HeightInRows

// Return row count of grid.

// (other items were commented in a header).

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

//

TInt CIMCVAppSmileIconGrid::HeightInRows()

    {

    return iRowCount;

    }

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

// CIMCVAppSmileIconGrid::SetLayout

// Set layout of identifier grid.

// (other items were commented in a header).

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

//

void CIMCVAppSmileIconGrid::SetLayout()

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::SetLayout() start"));

    iIsMirrored = AknLayoutUtils::LayoutMirrored();

    // popup_grid_graphic_window (Parent)

    TRect parentRect(iParent->Rect());

    // listscroll_popup_graphic_pane (this compoment)

    TAknLayoutRect listLayoutRect;

    listLayoutRect.LayoutRect(parentRect,

            AknLayoutScalable_Avkon::listscroll_popup_graphic_pane(0));

    // grid_graphic_popup_pane

    TAknLayoutRect gridLayoutRect;

    gridLayoutRect.LayoutRect(listLayoutRect.Rect(),

            AknLayoutScalable_Avkon::grid_graphic_popup_pane(0));

    // cell_graphic_popup_pane (upper left cell)

    TAknLayoutRect oneCellRect;

    oneCellRect.LayoutRect(gridLayoutRect.Rect(),

            AknLayoutScalable_Avkon::cell_graphic_popup_pane(0, 0, 0));

    iFirstCell = oneCellRect.Rect();

    iCellWidth = iFirstCell.Width();

    iCellHeight = iFirstCell.Height();

    // cell_graphic_popup_pane_g1 (icon size)

    TAknLayoutRect myIconRect;

    myIconRect.LayoutRect(iFirstCell,

            AknLayoutScalable_Avkon::cell_graphic_popup_pane_g1(0));

    iIconSize = myIconRect.Rect().Size();

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::SetLayout() end") );

    }

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

// CIMCVAppSmileIconGrid::MinimumSize

// Return minimum size to use the control.

// (other items were commented in a header).

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

//

TSize CIMCVAppSmileIconGrid::MinimumSize()

    {       

    TAknLayoutRect gridRect;

    gridRect.LayoutRect(

        iParent->Rect(),

        AknLayoutScalable_Avkon::listscroll_popup_graphic_pane() );

    return gridRect.Rect().Size();

    }

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

// CIMCVAppSmileIconGrid::SizeChanged

// Control rectangle is set.

// (other items were commented in a header).

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

//

void CIMCVAppSmileIconGrid::SizeChanged()

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::SizeChanged() start") );

    SetLayout();

    TInt iconCount( iIconArray.Count() );

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

	    {

		AknIconUtils::SetSize( iIconArray[i]->Bitmap(), 

		                       iIconSize );

	    }

	IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::SizeChanged() end") );

    }

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

// CIMCVAppSmileIconGrid::HandleResourceChange

// Notifier for changing layout

// (other items were commented in a header).

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

//

void CIMCVAppSmileIconGrid::HandleResourceChange( TInt aType )

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::HandleResourceChange() start") );

    if( aType == KEikDynamicLayoutVariantSwitch )

        {

        SetLayout();

        }

    else

        {

        CCoeControl::HandleResourceChange( aType );

        }

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::HandleResourceChange() end") );

    }

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

// CIMCVAppSmileIconGrid::Draw

// Drawing control.

// (other items were commented in a header).

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

//

void CIMCVAppSmileIconGrid::Draw( const TRect& /* aRect */ ) const

	{

	IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::Draw() start") );

	CWindowGc& gc = SystemGc();

	MAknsSkinInstance* skin = AknsUtils::SkinInstance();

	MAknsControlContext* cc = AknsDrawUtils::ControlContext( this );

	if( !iDragEvent )

		{

		// Draw the grid

		gc.SetPenStyle(CGraphicsContext::ESolidPen);    

		gc.SetBrushStyle(CGraphicsContext::ENullBrush);

		gc.SetPenSize(TSize(1,1));    

		gc.SetPenColor(AKN_LAF_COLOR(215));

		// For some reason the dialog does not draw it's background

		// completely, so we'll have to do it here.

		// This should work with bgRect = Rect(), but it doesn't.

		// Change this if you know how it should be done.

		TRect bgRect = iParent->Rect();

		bgRect.iTl.iY = Rect().iTl.iY;

		// ---

		TBool skins = AknsDrawUtils::Background( skin, cc, this, gc, bgRect );

		if ( !skins )

			{

			TRgb color = AKN_LAF_COLOR( 0 );

            AknsUtils::GetCachedColor(skin,color,KAknsIIDQsnIconColors,EAknsCIQsnIconColorsCG1); 

			gc.SetBrushColor(color);

			gc.Clear( bgRect );

			}

    	TInt lastRowIconsCount = iIconCount % iMaxColumns;

		if( lastRowIconsCount == 0 && iIconCount > 0 )

			{

			// Last row is full

    	    lastRowIconsCount = iMaxColumns;

			}

		TInt i( 0 );

		TPoint cellLeftTop( KTopLeft_x,KTopLeft_y );

		TPoint cellBottomRight( KBottomRight_x,KBottomRight_y );

		if(!iIsMirrored)	

			{

			// Draw horizontal lines

			for( i = 0; i <= iRowCount; ++i )

				{

				TPoint startPoint( cellLeftTop );

				TPoint endPoint( cellLeftTop );

				startPoint.iY += i * iCellHeight;

				endPoint.iY += i * iCellHeight;

				endPoint.iX += ( ( i == iRowCount ) || ( i == 0 && iRowCount == 1 )

				    ? ( lastRowIconsCount ) 

    		    * iCellWidth : iMaxColumns * iCellWidth );

				// add 1 pixel to remove the gap from bottom right corners

				++endPoint.iX;

				gc.DrawLine( startPoint, endPoint );

				}

			// Draw vertical lines

			for( i = 0; i <= iMaxColumns; ++i )

				{

				TPoint startPoint( cellLeftTop );

				TPoint endPoint( cellLeftTop );

				startPoint.iX += i * iCellWidth;

				endPoint.iX += i * iCellWidth;

				endPoint.iY += ( i <= lastRowIconsCount ? 

				    iCellHeight * iRowCount : iCellHeight * ( iRowCount - 1  ) );

				gc.DrawLine( startPoint, endPoint );

				}

			}

		else

			{

			// Draw horizontal lines

			for( i = 0; i <= iRowCount; ++i )

				{

				TPoint startPoint( cellLeftTop );

				TPoint endPoint( cellLeftTop );

				startPoint.iY += i * iCellHeight;

				endPoint.iY += i * iCellHeight;

				endPoint.iX += ( ( i == iRowCount ) || ( i == 0 && iRowCount == 1 )

								    ? ( lastRowIconsCount ) 

				    		    * iCellWidth : iMaxColumns * iCellWidth );

				// subtract one pixel to remove the gap from bottom left corners

				--endPoint.iX;

				gc.DrawLine( startPoint, endPoint );

				}

			// Draw vertical lines

			for( i = 0; i <= iMaxColumns; ++i )

				{

				TPoint startPoint( cellLeftTop );

				TPoint endPoint( cellLeftTop );

				startPoint.iX += i * iCellWidth;

				endPoint.iX += i * iCellWidth;

				endPoint.iY += ( i <= lastRowIconsCount ? 

				    iCellHeight * iRowCount : iCellHeight * ( iRowCount - 1  ) );

				gc.DrawLine( startPoint, endPoint );

				}

			}

		// Draw icons

		for( i = 0; i < iIconCount; ++i )

			{

			DrawItem( gc, skins, skin, cc, i, i == iCursorPos );

			}

		}

	else

		{

		// Only selection changed, highlight new pos

		DrawItem( gc, cc != NULL, skin, cc, iCursorPos, ETrue );        

		// And clear old

		DrawItem( gc, cc != NULL, skin, cc, iPrevCursorPos, EFalse );

		}

	IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::Draw() end") );    

	}

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

// CIMCVAppSmileIconGrid::DrawItem

// (other items were commented in a header).

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

void CIMCVAppSmileIconGrid::DrawItem( CWindowGc& aGc, 

                       TBool aSkinEnabled,

                       MAknsSkinInstance* aSkin, 

                       MAknsControlContext* aSkinCc,

                       TInt aIndex, TBool aSelected ) const

    {

    IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::DrawItem() start") );

    //lets count current cell

    TPoint cellLeftTop( KTopLeft_x,KTopLeft_y );

    TPoint cellBottomRight( KBottomRight_x,KBottomRight_y );

    TRect myRect;

    myRect.SetRect( cellLeftTop, cellBottomRight );

    TPoint offset;

    offset.iX = ( aIndex % iMaxColumns ) * iCellWidth;

    offset.iY = aIndex / iMaxColumns * iCellHeight;

    myRect.Move( offset );

    // don't draw bg/highlight over borderlines

    TRect myHighLightRect = myRect;

    myHighLightRect.iTl.iX++;

    myHighLightRect.iTl.iY++;

    if( aSelected )

        {

        // HIGHLIGHT

        if( !aSkinEnabled )

            {

            aGc.SetBrushStyle( CGraphicsContext::ESolidBrush );

            }            

        TRgb color = AKN_LAF_COLOR(210);

        AknsUtils::GetCachedColor( aSkin, color, KAknsIIDQsnIconColors,

                                   EAknsCIQsnComponentColorsCG17 ); 

        aGc.SetBrushColor( color );

        aGc.Clear( myHighLightRect );                

        }

    else

        {

        TRgb color = AKN_LAF_COLOR( 0 );

        AknsUtils::GetCachedColor( aSkin, color, KAknsIIDQsnIconColors,

                                   EAknsCIQsnIconColorsCG1 );

        aGc.SetBrushColor( color );

        if ( aSkinEnabled )

            {

            AknsDrawUtils::Background( aSkin, aSkinCc, aGc, myHighLightRect );                    

            }

        else

            {

            aGc.DrawRect( myHighLightRect );    

            }

        }

    TAknWindowLineLayout myIconLayout( AknLayoutScalable_Avkon::cell_graphic_popup_pane_g1(0) );

    TAknLayoutRect myIconRect;

    myIconRect.LayoutRect( myRect, myIconLayout );

	if( aIndex < iIconArray.Count() )

	    {

		myIconRect.DrawImage( aGc,

			iIconArray[ aIndex ]->Bitmap(),

			iIconArray[ aIndex ]->Mask() );

	    }

	IM_CV_LOGS(TXT("CIMCVAppSmileIconGrid::DrawItem() end") );    

    }

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

// CIMCVAppSmileIconGrid::HandlePointerEventL

// (other items were commented in a header).