/*

* 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 base control

*

*/

#include "peninputlayouttimer.h"

#include "peninputlayoutcandidatewnd.h"

#include "peninputlayout.h"

const TInt KDefaultBorder = 1 ;

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

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

// CCandidateWnd::CCandidateWnd

// C++ default constructor

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

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

//

EXPORT_C CCandidateWnd::CCandidateWnd(const TRect& aRect,TInt aCandidateRectNum,

                              CFepUiLayout* aUiLayout,TInt aCtrlId,

                              TTimeIntervalMicroSeconds32 aHideTimer)

                              :CFepUiBaseCtrl(aRect,aUiLayout,aCtrlId),

                              iSelection(-1),

                              iDelay(aHideTimer),

                              iBaseline(-1),

                              iFontOwnership(EFalse)

    {

    SetControlType(ECtrlCandidateList);

    if(iDelay.Int()!=0)

        iAutoHide=ETrue;

    else

        iAutoHide=EFalse;

    if(aCandidateRectNum <=0)

        iCandidateRectNum = 1;

    else

        iCandidateRectNum = aCandidateRectNum;

    iFontSpec.iHeight = 0;

    //candidate window is opaque

    SetMaskBkCol(KRgbBlack);

    }

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

// CCandidateWnd::~CCandidateWnd

// Destructor

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

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

//

EXPORT_C CCandidateWnd::~CCandidateWnd()

    {

    //free the candidate buffer

    for(TInt i = 0; i < iCandidateList.Count(); i++)

        {

        HBufC* buf = iCandidateList[i];

        delete buf;

        }

    iCandidateList.Close();

    iCandidateRectList.Close();    

    iCandidateTextRectList.Close();

    delete iHideTimer;

    if(iFontOwnership && iFont)

        {

        BitmapDevice()->ReleaseFont(iFont);

        iFont = NULL;    

        }    

    }

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

// CCandidateWnd::NewL

// factory function

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

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

//

EXPORT_C CCandidateWnd* CCandidateWnd::NewL(const TRect& aRect,TInt aCandidateRectNum,

                          CFepUiLayout* aUiLayout,TInt aCtrlId,

                          TTimeIntervalMicroSeconds32 aHideTime)                            

    {

    CCandidateWnd* wnd=new (ELeave)CCandidateWnd(aRect,aCandidateRectNum,

                                                aUiLayout,aCtrlId,aHideTime);

    CleanupStack::PushL(wnd);

    wnd->ConstructL ();

    CleanupStack::Pop(wnd);

    return wnd;

    }

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

// CCandidateWnd::GetCandidateL

// Set candidate data

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

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

//    

EXPORT_C const TDesC& CCandidateWnd::GetSelCandidate()

    {

    if(iSelection >= 0 && iSelection < iCandidateList.Count()) 

        {

        return *(iCandidateList[iSelection]);

        }

    return KNullDesC();

    }

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

// CCandidateWnd::SetAutoHideDelay

// Set auto hide timer delay

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

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

//    

EXPORT_C void CCandidateWnd::SetAutoHideDelay(TTimeIntervalMicroSeconds32 aDelay)

    {

    iDelay = aDelay;

    if(iDelay.Int()!=0)

        {               

        iAutoHide=ETrue;

        iHideTimer->SetTimer(iDelay);

        }

    else

        {

        iAutoHide=EFalse;

        iHideTimer->Cancel();

        }

    }

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

// CCandidateWnd::SetCandidateNumL

// Set the number of candidates in one line

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

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

//    

EXPORT_C void CCandidateWnd::SetCandidateNumL(TInt aNumInLine)

    {

    if(aNumInLine <=0)

        iCandidateRectNum = 1;

    else

        iCandidateRectNum = aNumInLine;

    iCandidateRectList.Reset();

    iCandidateTextRectList.Reset();

    TRect rect(Rect());

    TInt w = (rect.Width() - KDefaultBorder * (1+iCandidateRectNum) ) 

                                            / iCandidateRectNum;

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

        {

        rect.iBr.iX=rect.iTl.iX+w;

        iCandidateRectList.AppendL(rect);

        iCandidateTextRectList.AppendL(rect);

        rect.iTl.iX=rect.iBr.iX+1; 

        }

    }

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

// CCandidateWnd::SetCandidateNumL

// Set the number of candidates in one line

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

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

//    

EXPORT_C void CCandidateWnd::SetCandidateNumL(TInt aNumInLine,

							const TSize& aCellRectSize, const TRect& aTextRect)

    {

    if(aNumInLine <= 0)

        iCandidateRectNum = 1;

    else

        iCandidateRectNum = aNumInLine;

    iCandidateRectList.Reset();

	iCandidateTextRectList.Reset();    

	TRect rect(Rect());

	TRect textRect; //for text drawing

	TPoint offset = aTextRect.iTl;

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

        {

        rect.iBr.iX = rect.iTl.iX + aCellRectSize.iWidth;

        iCandidateRectList.AppendL(rect);

        textRect.iTl = rect.iTl + offset;

        textRect.iBr.iX = textRect.iTl.iX + aTextRect.Width();

        textRect.iBr.iY = textRect.iTl.iY + aTextRect.Height();

        iCandidateTextRectList.AppendL(textRect);

        rect.iTl.iX = rect.iBr.iX + 1; 

        }    

    }

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

// CCandidateWnd::SetFont

// Set candidate window font

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

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

//        

EXPORT_C void CCandidateWnd::SetFont(const TFontSpec& aFontSpec)

    {

    iFontSpec = aFontSpec;

    if(iFontOwnership && iFont) //release the owned font

        {

        BitmapDevice()->ReleaseFont(iFont);

        iFont = NULL;    

        }    

    if(BitmapDevice())

        {

        if (KErrNone != BitmapDevice()->GetNearestFontInPixels(iFont,iFontSpec))

            iFont = NULL;            

        }      

    iFontOwnership = ETrue;

    }        

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

// CCandidateWnd::SetFont

// Set candidate window font

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

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

//        

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

    {

    if(iFontOwnership && iFont)

        {

        BitmapDevice()->ReleaseFont(iFont);

        iFont = NULL;    

        }    

    iFont = const_cast<CFont*>(aFont);

    if(iFont)

        iFontSpec = iFont->FontSpecInTwips();

    iFontOwnership = EFalse;

    }        

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

// CCandidateWnd::Draw

// Draw control

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

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

//    

EXPORT_C void CCandidateWnd::Draw()

    {

    //do nothing if not ready or hiden or no candidate while in auto hide mode

    if(!AbleToDraw() || (iAutoHide && iCandidateList.Count() <= 0))

        return;

    DrawOpaqueMaskBackground();

    CFbsBitGc* gc = static_cast<CFbsBitGc*>(BitGc());

    TRect wndRect = Rect();

    // ----- draw on bitmaps -----

    DrawBackground();

    //draw two lines: the up left and up top line    

    gc->DrawLine(wndRect.iTl,TPoint(wndRect.iTl.iX,wndRect.iBr.iY));

    gc->DrawLine(wndRect.iTl,TPoint(wndRect.iBr.iX,wndRect.iTl.iY));    

    //draw candidate text        

    if(iFont)

        BitGc()->UseFont(iFont);

    TBuf<1> buf;

    BitGc()->SetBrushStyle( CGraphicsContext::ENullBrush );

//    __ASSERT_DEBUG(iCandidateRectList.Count(),EUiLayoutCandiateNumIsNotSet);

    TRect rect=iCandidateRectList[0];

    BitGc()->DrawLine(TPoint(rect.iTl.iX,rect.iTl.iY),

                                    TPoint(rect.iTl.iX,rect.iBr.iY));

    TInt baseLine = iBaseline > 0 ? iBaseline : 

                           iCandidateTextRectList[0].Height()*KDEFAULTBASELINERATIO;

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

        {

        //draw bottom line and right line

        TPoint bottom_from(iCandidateRectList[i].iTl.iX,

                                            iCandidateRectList[i].iBr.iY);

        TPoint bottom_to(iCandidateRectList[i].iBr.iX,

                                            iCandidateRectList[i].iBr.iY);

        BitGc()->DrawLine(bottom_from,bottom_to);

        TPoint right_from(iCandidateRectList[i].iBr.iX,

                                            iCandidateRectList[i].iTl.iY);

        TPoint right_to(iCandidateRectList[i].iBr.iX,

                                            iCandidateRectList[i].iBr.iY);

        BitGc()->DrawLine(right_from,right_to);

        if(i < iCandidateList.Count() && iFont)

            {

            HBufC* data=iCandidateList[i];    

            BitGc()->DrawText(*data,iCandidateTextRectList[i],baseLine,

                                                CGraphicsContext::ECenter );

            }             

        }            

    if(iFont)

        BitGc()->DiscardFont();        

    }

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

// CCandidateWnd::Move

// Move the candidate window

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

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

//            

EXPORT_C void CCandidateWnd::Move(const TPoint& aOffset)

    {

    CFepUiBaseCtrl::Move(aOffset);

    //Recal candidate rect after moving

    for(TInt i = 0 ; i < iCandidateTextRectList.Count();i++)

        {

        iCandidateTextRectList[i].Move(aOffset);

        iCandidateRectList[i].Move(aOffset);

        }

    }

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

// CCandidateWnd::DrawIndication

// Draw selection effect

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

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

//    

void CCandidateWnd::DrawIndication(TInt aSelection,TBool aPressedFlag)

    {

    if(aSelection < 0)

        return;

    CFbsBitGc* gc = static_cast<CFbsBitGc*>(BitGc());        

    TRect rect = iCandidateTextRectList[aSelection];        

    gc->Activate( BitmapDevice() );

    const TUint8 blackMap = 128;

    const TUint8 whiteMap = 240;

    if(aPressedFlag) //need press effect

        {        

        gc->SetFadingParameters(blackMap, whiteMap);

        gc->SetFaded(ETrue);

        }

    else

        gc->SetFaded(EFalse);

    TPoint bmpPos = rect.iTl;

    gc->SetPenColor( PenColor() );    

    if(BackgroundBmp())

        gc->BitBlt(bmpPos, BackgroundBmp(), rect);

    else

        {

        gc->SetBrushColor( BkColor());

        gc->SetBrushStyle( CGraphicsContext::ESolidBrush );        

        gc->SetPenColor(BkColor());

        gc->SetPenStyle(CGraphicsContext::ESolidPen);

        gc->DrawRect(rect);

        }

    gc->UseFont(iFont);

    HBufC* data=iCandidateList[aSelection];    

    gc->SetBrushStyle( CGraphicsContext::ENullBrush );

    TInt baseLine = iBaseline > 0 ? iBaseline : 

                           iCandidateTextRectList[0].Height()*KDEFAULTBASELINERATIO;

    gc->SetPenColor( PenColor());

    gc->SetPenStyle(CGraphicsContext::ESolidPen);

    gc->DrawText(*data,rect,baseLine,CGraphicsContext::ECenter );

    gc->DiscardFont();    

    UpdateArea(rect, EFalse);

    gc->SetFaded(EFalse);    

    }

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

// CCandidateWnd::HandlePointerDownEventL

// handle pointer down event

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

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

//    

EXPORT_C CFepUiBaseCtrl* CCandidateWnd::HandlePointerDownEventL( const TPoint& aPt)

    {    

    //call base to set state

    CFepUiBaseCtrl::HandlePointerDownEventL(aPt);    

    for(TInt i=0;i < iCandidateRectList.Count() && i<iCandidateList.Count();i++)

        {        

        if(iCandidateRectList[i].Contains(aPt))

            {

            if(iHideTimer)

                iHideTimer->Cancel();

            //selected

            iSelection = i;           

            DrawIndication(i);

            iPointerLeft = EFalse;

            iPointerLeftCandidate = EFalse;

            return this;

            }

        }

    iSelection = -1; //no selection

    return this;

    }

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

// CCandidateWnd::HandlePointerMoveEventL

// handle pointer move event

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

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

//    

EXPORT_C CFepUiBaseCtrl* CCandidateWnd::HandlePointerMoveEventL( const TPoint& aPoint)

    {    

    for(TInt i=0;i < iCandidateRectList.Count() && i<iCandidateList.Count();i++)

        {        

        if(iCandidateRectList[i].Contains(aPoint))

            {

            //selected

            if(i != iSelection)

                {

                if(!iPointerLeftCandidate)

                    {                    

                    DrawIndication(iSelection,EFalse);

                    iPointerLeftCandidate = ETrue; //pointer move to another candidate

                    }

                }

            else

                {

                if(iPointerLeftCandidate)

                    {                    

                    DrawIndication(iSelection,ETrue);

                    iPointerLeftCandidate = EFalse;

                    }

                }            

            return this;

            }

        }    

    return this;    

    }

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

// CCandidateWnd::HanldePointerUpEventL

// handle pointer up event

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

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

//    

EXPORT_C CFepUiBaseCtrl* CCandidateWnd::HandlePointerUpEventL( const TPoint& aPoint)

    {      

    TBool bContinue = ETrue;       

    for(TInt i=0;i < iCandidateRectList.Count() && i < iCandidateList.Count()

                 && bContinue;i++)

        {        

        if(iCandidateRectList[i].Contains(aPoint))

            {

            if(iHideTimer)

                iHideTimer->Cancel();

            //selected

            if(iSelection != i)

                {

                //cancel the selection if pen down and up in different place

                DrawIndication(iSelection,EFalse);

                iSelection = -1; 

                iPointerLeftCandidate = EFalse;

                iPointerLeft = EFalse;

                bContinue = EFalse;

                }

             else

                {

                if(iCandidateList.Count()>0)

                    {

                    HBufC* data=iCandidateList[i];

                    if(data->Length() > 0)

                        {

                        //report to observer

                        ReportEvent(EEventCandidateSelected,*data);

                        }

                    }

                DrawIndication(iSelection,EFalse);

                bContinue = EFalse;

                }

            }

        }

    //reset the timer

    if(iHideTimer)

        iHideTimer->SetTimer(iDelay);

    return this;

    }

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

// CCandidateWnd::SetCandidateL

// Set candidate data

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

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

//    

EXPORT_C void CCandidateWnd::SetCandidateL(const RPointerArray<HBufC>& aCandidateData)

    {

    iCandidateList.ResetAndDestroy();

    if(aCandidateData.Count())

        {

        for(TInt i = 0; i < aCandidateData.Count(); i++)

            {

            HBufC* data = aCandidateData[i]->AllocL();

            CleanupStack::PushL(data);

            iCandidateList.AppendL(data);

            CleanupStack::Pop(data);

            }

        Hide(EFalse);

        Draw();

        //report event, so as hwr window may redraw the stroke in case of that

        // hwr window is overlapped with candidate window

        RootControl()->HandleControlEvent(EEventRegionUpdated,this,KNullDesC);       

        iSelection = 0;