/*

* Copyright (c) 2005-2006 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 for pop up window

*

*/

#include "peninputlayoutrootctrl.h"

#include "peninputlayoutpopupwnd.h"

#include "peninputlayout.h"

#include <coemain.h>

#include <coecntrl.h>

#include "peninputcmd.h"

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

// Implementation of Class CFepLayoutPopupWnd

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

// CFepLayoutPopupWnd::CFepLayoutPopupWnd

// C++ default constructor

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

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

EXPORT_C CFepLayoutPopupWnd::CFepLayoutPopupWnd(const TSize& /*aSize*/,

                                    CFepUiLayout* aUiLayout,TInt aControlId)

                            : CControlGroup(aUiLayout, aControlId), iIsShowing(EFalse)

	{

	SetControlType(ECtrlPopupWindow | ECtrlControlGroup);

	Hide(ETrue);

	}

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

// CFepLayoutPopupWnd::~CFepLayoutPopupWnd

// Destructor

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

EXPORT_C CFepLayoutPopupWnd::~CFepLayoutPopupWnd()

	{

	if(iIsShowing) // is showing

		{		

		//do nothing

		}

    delete iExt;

	}	

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

// CFepLayoutPopupWnd::ConsructL()

// Symbian 2nd phase constructor

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

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

EXPORT_C void CFepLayoutPopupWnd::ConstructL()

	{

	BaseConstructL();

    iExt = CPopupWndExt::NewL();    

    //check whether we need create backup bmp. Some pop up window is created after UI layout is created

    //If a pop up window is created during layout constructing, it will create the backup bitmap in Handleresourcechange

    if (UiLayout()->NotDrawToLayoutDevice())

        {

            iExt->ContructBkDeviceL(Rect().Size(),

                        UiLayout()->LayoutOwner()->BitmapDevice()->DisplayMode());

        }

	}	

EXPORT_C void CFepLayoutPopupWnd::ReDrawRect(const TRect& /*aRect*/)

    {

    Draw();

    }

/*

Four directions description                                                 

                       +-----------+     +-----------+                      

                       |           |     |           |                      

  EDispTopLeft;        | PopupWnd  |     | PopupWnd  |  EDispTopRight;      

                       |           |     |           |                      

                       +-------+---+     +---+---+---+                      

                               |   |     |   |                              

                               +---+     +---+                              

                               +---+     +---+                              

                               |   |     |   |                              

                       +-------+---+     +---+-------+                      

                       |           |     |           |                      

  EDispBottomLeft;     | PopupWnd  |     | PopupWnd  |  EDispBottomRight;   

                       |           |     |           |                      

                       +-------+---+     +-------+---+                      

The method to determine the direction                                 

    1.Convert coordinates to screen based                             

    2.Determine left-right direction                                  

      2.1 First consider screen                                       

      2.2 if both left & right are in screen, consider layout         

      2.3 if both left & right are neigher in screen nor in layout,   

          use the less difference                                     

    3.Determine top-bottom direction                                  

*/	

CFepLayoutPopupWnd::TDisplayPosition CFepLayoutPopupWnd::DeterminePosition(const TRect& aSrcRect)

    {

	TBool down = ETrue;

	TBool right = ETrue;

	TSize szPopup = iRect.Size();

	TRect rtLayout = UiLayout()->Rect();

	TPoint ptLayout = UiLayout()->Position();

	rtLayout.Move( ptLayout );

    TPixelsTwipsAndRotation ptScreenSize;             

    CCoeEnv::Static()->ScreenDevice()->

                            GetDefaultScreenSizeAndRotation(ptScreenSize);

    TRect rtScreen (TPoint(), ptScreenSize.iPixelSize );

    //determine right or left

    TInt rsRight = aSrcRect.iTl.iX + ptLayout.iX + szPopup.iWidth;

    TInt lsLeft = aSrcRect.iBr.iX + ptLayout.iX - szPopup.iWidth;

    do 

        {

        if( rsRight > rtScreen.iBr.iX && lsLeft > 0 )

            {

            right = EFalse;

            break;

            }

        if( rsRight < rtScreen.iBr.iX && lsLeft < 0 )

            {

            right = ETrue;

            break;

            }

        if( rsRight > rtScreen.iBr.iX && lsLeft < 0 )

            {

            if( rsRight - rtScreen.iBr.iX < 0 - lsLeft )

                {

                right = ETrue;

                }

            else

                {

                right = EFalse;

                }

            break;

            }

        if( rsRight < rtLayout.iBr.iX )

            {

            right = ETrue;

            break;

            }

        if( lsLeft > rtLayout.iTl.iX )    

            {

            right = EFalse;

            break;

            }

        if( rtLayout.iTl.iX - lsLeft < rsRight - rtLayout.iBr.iX )    

            {

            right = EFalse;

            break;

            }

        right = ETrue;

        }while( EFalse );

    //determin down or up

    TInt dsBottom = aSrcRect.iBr.iY + ptLayout.iY + szPopup.iHeight;

    TInt usTop = aSrcRect.iTl.iY + ptLayout.iY - szPopup.iHeight;

    do 

        {

        if( dsBottom > rtScreen.iBr.iY && usTop > 0 )

            {

            down = EFalse;

            break;

            }

        if( dsBottom < rtScreen.iBr.iY && usTop < 0 )

            {

            down = ETrue;

            break;

            }

        if( dsBottom > rtScreen.iBr.iY && usTop < 0 )

            {

            if( dsBottom - rtScreen.iBr.iY < 0 - usTop )

                {

                down = ETrue;

                }

            else

                {

                down = EFalse;

                }

            break;

            }

        if( dsBottom < rtLayout.iBr.iY )

            {

            down = ETrue;

            break;

            }

        if( usTop > rtLayout.iTl.iY )    

            {

            down = EFalse;

            break;

            }

        if( rtLayout.iTl.iY - usTop < dsBottom - rtLayout.iBr.iY )    

            {

            down = EFalse;

            break;

            }

        down = ETrue;

        }while( EFalse );

    TDisplayPosition disPostion;

    if( down )

        {

        if( right )

            {

            disPostion = EDispBottomRight;

            }

        else

            {

            disPostion = EDispBottomLeft;

            }

        }

    else

        {

        if( right )

            {

            disPostion = EDispTopRight;

            }

        else

            {

            disPostion = EDispTopLeft;

            }

        }

    return disPostion;

    }

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

// CFepLayoutPopupWnd::Display()

// display pop up window

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

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

EXPORT_C void CFepLayoutPopupWnd::Display( const TRect& aOffsetRect, TDisplayPosition aDisPostion)

    {

	if(iIsShowing)

	    return;

	RootControl()->SetActiveCtrl(this);

    ReportEvent(EEventCapturePointer);

    //When preparing the pop up window, it causes redraw the underlying control sometimes.

    DisableDrawingInGroup();//disable any drawing during preparation to avoid it dirty the background

	//let pop up window do preparation

	OnDisplay();	

	//determine the directoin

	TRect rtPopup; //final position 

	TSize szPopup = iRect.Size();

	TRect rtLayout = UiLayout()->Rect();

	TPoint ptLayout = UiLayout()->Position();

	rtLayout.Move( ptLayout );

	TRect layoutRect = UiLayout()->Rect();//relative layout

	if( aDisPostion == EDispAutomatic )

	    {

        aDisPostion = DeterminePosition( aOffsetRect );

	    }

    //reposition if the rect is out of screen   

    TPixelsTwipsAndRotation ptScreenSize;             

    CCoeEnv::Static()->ScreenDevice()->

                            GetDefaultScreenSizeAndRotation(ptScreenSize);

    TRect offsetRect( aOffsetRect );

    offsetRect.Move( ptLayout );

    switch( aDisPostion )

        {

        case EDispBottomRight:

            rtPopup.SetRect( TPoint( offsetRect.iTl.iX, offsetRect.iBr.iY ), szPopup );            

            if( rtPopup.iBr.iY > ptScreenSize.iPixelSize.iHeight )

                {

                rtPopup.Move( 0, ptScreenSize.iPixelSize.iHeight - rtPopup.iBr.iY );

                }            

            if(rtPopup.iBr.iX > ptScreenSize.iPixelSize.iWidth )

                {

                rtPopup.Move ( ptScreenSize.iPixelSize.iWidth - rtPopup.iBr.iX, 0 );

                }

            break;

        case EDispBottomLeft:

            rtPopup.SetRect( TPoint( offsetRect.iBr.iX - szPopup.iWidth, offsetRect.iBr.iY), 

                             szPopup );

            if( rtPopup.iBr.iY > ptScreenSize.iPixelSize.iHeight )

                {

                //we need move the pop wnd up to ensure it not to be out of screen

                rtPopup.Move( 0, ptScreenSize.iPixelSize.iHeight - rtPopup.iBr.iY );

                }

            if( rtPopup.iTl.iX < 0 )

                {

                rtPopup.Move ( -rtPopup.iTl.iX, 0 );

                }

            break;

        case EDispTopRight:

            rtPopup.SetRect( TPoint( offsetRect.iTl.iX, offsetRect.iTl.iY - szPopup.iHeight ), 

                             szPopup );            

            if( rtPopup.iTl.iY < 0 )

               {

               rtPopup.Move ( 0, -rtPopup.iTl.iY );

               }                       

            if(rtPopup.iBr.iX > ptScreenSize.iPixelSize.iWidth )

                {

                rtPopup.Move ( ptScreenSize.iPixelSize.iWidth - rtPopup.iBr.iX, 0 );

                }

            break;

        case EDispTopLeft:

            rtPopup.SetRect( TPoint( offsetRect.iBr.iX - szPopup.iWidth, 

                                     offsetRect.iTl.iY - szPopup.iHeight ), szPopup );

            if( rtPopup.iTl.iY < 0 )

               {

               rtPopup.Move ( 0, -rtPopup.iTl.iY );

               }

            if( rtPopup.iTl.iX < 0 )

                {

                rtPopup.Move ( -rtPopup.iTl.iX, 0 );

                }

            break;

        }

    MLayoutOwner* layoutOwner = UiLayout()->LayoutOwner();

	//calculate the bound rect of current layout + popup window in screen coordination

	TRect totalRect(rtPopup);

	totalRect.BoundingRect(rtLayout);

    TRect rtFinal( totalRect );

	rtPopup.Move( -ptLayout );

	if( rtFinal != rtLayout )

	    {//resize

	    iPrevLayoutRect = rtLayout;

	    iLayoutMoveOff = rtLayout.iTl - rtFinal.iTl;

	    rtPopup.Move( iLayoutMoveOff );

        layoutOwner->LayoutSizeChanged(rtFinal.Size(), EFalse);

        layoutOwner->SetPosition(rtFinal.iTl);

        //RootControl()->Clear();

        DrawTransparentMaskBackground( TRect( TPoint(), rtFinal.Size() ) );

        RootControl()->Move(iLayoutMoveOff);

        EnableDrawingInGroup();

        RootControl()->Draw();

        DisableDrawingInGroup();	    

    	//UpdateArea( TRect( TPoint(), rtFinal.Size()), ETrue); 	

	    }

	else

	    {

	    iPrevLayoutRect.SetSize(TSize(0,0));	        

	    }

    //capture pointer

    iPreCaptureCtrl= CapturePointer();

	if(iWndControl)

	    {

	    iWndControl->MakeVisible(ETrue);    

	    }

    //iRect = rtPopup;

    Move( rtPopup.iTl - Rect().iTl);

    //copy and save the bitmap 

    if (UiLayout()->NotDrawToLayoutDevice())

        {    

        iExt->SetRect(Rect());

        CFbsBitGc* gc = iExt->BackupGc();

        gc->Activate( iExt->BackupDevice() );

        CFbsBitGc* layoutGc = static_cast<CFbsBitGc*>(

                            UiLayout()->LayoutOwner()->BitmapContext()); 

        gc->BitBlt(TPoint(0,0),*layoutGc,Rect());

        Hide(EFalse); 

        }

    EnableDrawingInGroup();

    UiLayout()->LockArea(iRect,this);

    SetReady(ETrue);//enalbe it as in Close, the flag is reset.

    if (UiLayout()->NotDrawToLayoutDevice())

        Draw();//force draw

    else

        Hide(EFalse);

    UpdateArea(iRect, EFalse); 

    iIsShowing = ETrue;

    AfterDisplayed();

	TRect rectOfPopup =Rect(); //in new layout coord-sys

	TRect rectTrimLayout = RootControl()->Rect(); // in new layout coord-sys

	TInt rectsz = sizeof(TRect)/sizeof(TUint16);

	RBuf buf;

	buf.Create( rectsz * 2 );

	buf.Append( reinterpret_cast<const TUint16*>(&rectOfPopup), rectsz );

	buf.Append( reinterpret_cast<const TUint16*>(&rectTrimLayout), rectsz );

	UiLayout()->SignalOwner(ESignalPopupWnd, buf );

	buf.Close();

    }

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

// CFepLayoutPopupWnd::Display()

// display pop up window

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

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

EXPORT_C void CFepLayoutPopupWnd::Display( const TRect& aOffsetRect )

    {

        Display( aOffsetRect, EDispAutomatic);

    }

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

// CFepLayoutPopupWnd::Display()

// display pop up window

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

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

EXPORT_C void CFepLayoutPopupWnd::Display(const TPoint& aOffset)

	{

	Display ( TRect( aOffset, aOffset ) , EDispAutomatic);	

	}		

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

// CFepLayoutPopupWnd::CloseWindow()

// display window

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

EXPORT_C void CFepLayoutPopupWnd::CloseWindow()

	{

	if( !iIsShowing )

	    {

	    return;

	    }

    if(iPreCaptureCtrl)

        iPreCaptureCtrl->CapturePointer();

    else

        CapturePointer(EFalse);   	

	UiLayout()->SignalOwner(ESignalPopupWndClosed); 		    

	iIsShowing = EFalse;

	if(iWndControl)

	    iWndControl->MakeVisible(EFalse);    

    SetReady(EFalse);//disable redraw

    TRect popRect = iRect;

    UiLayout()->UnLockArea(iRect, this);

    //restore the background bitmap

    TBool bRedraw = ETrue;

    if (UiLayout()->NotDrawToLayoutDevice())

        {

        CFbsBitGc* layoutGc = static_cast<CFbsBitGc*>(

                    UiLayout()->LayoutOwner()->BitmapContext()); 

                iExt->BackupGc();

        layoutGc->Activate( UiLayout()->LayoutOwner()->BitmapDevice());

        TRect r;

        r.SetSize(iExt->Rect().Size());

        layoutGc->BitBlt(iExt->Rect().iTl,iExt->BackupBitmap(),r);

        bRedraw = EFalse;

        }

    Hide(ETrue);

	UiLayout()->UnLockArea(iRect,this);

	iRect.Move(-iRect.iTl);	

	MLayoutOwner* layoutOwner = UiLayout()->LayoutOwner();

	if(!iPrevLayoutRect.IsEmpty())

	    {

	    RootControl()->Move(-iLayoutMoveOff);

	    TRect rt;

	    rt.SetSize( layoutOwner->LayoutRect().Size() );

        layoutOwner->SetPosition(iPrevLayoutRect.iTl);

       	layoutOwner->LayoutSizeChanged(iPrevLayoutRect.Size());

        RootControl()->GraphicDeviceSizeChanged();

	    }

    if (bRedraw)    

	    {

        RootControl()->Draw();

		}

	iIsShowing = EFalse;

    //TRect rect(TPoint(0, 0), iPrevLayoutRect.Size());

    UpdateArea(popRect, EFalse);     	

	}		

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

// CFepLayoutPopupWnd::SetRect

// Set the pop up window's rect

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