/*

* Copyright (c) 2009, 2010 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:  Shows number keypad and generates keypress event when 

*                 buttons are pressed.

*

*/

// INCLUDE FILES

#include <gulicon.h>

#include <AknUtils.h>

#include <aknbutton.h>

#include <AknControl.h>

#include <AknsUtils.h>

#include <AknsSkinInstance.h>

#include <AknsDrawUtils.h>

#include <data_caging_path_literals.hrh> // for KDC_APP_RESOURCE_DIR

#include <touchfeedback.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <aknlayoutscalable_apps.cdl.h>

#include <AknsFrameBackgroundControlContext.h>

#include "dialercommon.h"

#include "dialertrace.h"

#include "cdialerkeypadbutton.h"

_LIT( KDialerMifFileName, "dialer.mif" );

// Keypad icon size relative to height of button.

static const TInt KIconSizePercent = 40;

// Keypad icon size used when key has already two lines

// of text, and the icon needs to be squeezed into smaller space.

static const TInt KSmallIconSizePercent = 30;

// Horizontal icon margin relative to button width. 

static const TInt KIconMarginXPercent = 10;

// Vertical icon margin relative to button height. 

static const TInt KIconMarginYPercent = 5;

static const TInt KCent = 100;

// Copied from CAknButton

const TInt KDragEventSensitivity = 1;

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

// C++ default constructor

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

//

CDialerKeyPadButton::CDialerKeyPadButton( const TDesC& aNumberLabel,

                                          const TDesC& aPrimaryAlphaLabel,

                                          const TDesC& aSecondaryAlphaLabel,

                                          TInt aScanCode, 

                                          TInt aKeyCode,

                                          TMifDialer aButtonIconId, 

                                          TMifDialer aButtonIconMaskId,

                                          TInt aFlags ):

        CAknButton( aFlags ), 

        iScanCode( aScanCode ), 

        iKeyCode( aKeyCode ),

        iButtonIconId( aButtonIconId ),

        iButtonIconMaskId( aButtonIconMaskId ),

        iNumberLabel( aNumberLabel ),

        iPrimaryAlphaLabel( aPrimaryAlphaLabel ),

        iSecondaryAlphaLabel( aSecondaryAlphaLabel )

    {

    }

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

// CDialerKeyPadButton::NewLC

// Two-phased constructor.

// Constructs dialer button.

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

//

CDialerKeyPadButton* CDialerKeyPadButton::NewLC( const TDesC& aNumberLabel,

                                                 const TDesC& aPrimaryAlphaLabel,

                                                 const TDesC& aSecondaryAlphaLabel,

                                                 TInt aScanCode, 

                                                 TInt aKeyCode,

                                                 TMifDialer aButtonIconId, 

                                                 TMifDialer aButtonIconMaskId,

                                                 TInt aFlags )

    {

    CDialerKeyPadButton* self = new (ELeave) CDialerKeyPadButton( aNumberLabel, 

                                                                  aPrimaryAlphaLabel, 

                                                                  aSecondaryAlphaLabel, 

                                                                  aScanCode, 

                                                                  aKeyCode,

                                                                  aButtonIconId,

                                                                  aButtonIconMaskId,

                                                                  aFlags );

    CleanupStack::PushL( self );

    self->ConstructL( aFlags );

    return self;

    }

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

// CDialerKeyPadButton::ConstructL

// Symbian 2nd phase constructor for dialer button.

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

//

void CDialerKeyPadButton::ConstructL( TInt aFlags )

    {

    CAknButton::ConstructL( NULL, NULL, NULL, NULL, KNullDesC, KNullDesC, aFlags );

    UpdateIconL();

    // button text color

    SetTextColorIds( KAknsIIDQsnTextColors, EAknsCIQsnTextColorsCG65 );

    SetIconScaleMode( EAspectRatioPreserved );

    SetMargins( TMargins8(0,0,0,0) );

    AknsUtils::RegisterControlPosition( this );

    }

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

// Destructor

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

//

CDialerKeyPadButton::~CDialerKeyPadButton()

    {

    AknsUtils::DeregisterControlPosition( this );

    MTouchFeedback* feedback = MTouchFeedback::Instance();

    if ( feedback )

        {

        feedback->RemoveFeedbackForControl( this );

        }

    }

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

// Draw dialer button,  text and icon.

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

// 

void CDialerKeyPadButton::Draw( const TRect& aRect ) const

    {

    TAknLayoutRect centerLayout;

    centerLayout.LayoutRect( aRect,

        AknLayoutScalable_Avkon::toolbar_button_pane_g1().LayoutLine() );

    TRect innerRect = centerLayout.Rect();

    CWindowGc& gc = SystemGc();

    MAknsSkinInstance* skin = AknsUtils::SkinInstance();

    TAknsItemID frameId = KAknsIIDQsnFrButtonNormal;

    if ( iButtonPressed )

        {

        frameId = KAknsIIDQsnFrButtonPressed;

        }

    else if ( IsDimmed() )

        {

        frameId = KAknsIIDQsnFrButtonInactive;

        }

    iBgContext->SetFrame( frameId );

    iBgContext->SetCenter( KAknsIIDQsnFrButtonCenterNormal );

    iBgContext->SetFrameRects( aRect, innerRect );

    TBool bgDrawn = AknsDrawUtils::Background( skin, 

                                    iBgContext, 

                                    NULL, 

                                    gc, 

                                    aRect, 

                                    KAknsDrawParamNoClearUnderImage );

    __ASSERT_DEBUG( bgDrawn, DialerPanic( EDialerPanicDrawingError ) );

    DrawIconAndText( gc );

    }

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

// Respond to changes in the button size

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

//

void CDialerKeyPadButton::SizeChanged()

    {

    CAknButton::SizeChanged();

    AknsUtils::RegisterControlPosition( this );

    TRect buttonRect = Rect();

    TAknLayoutRect iconLayout;

    const CGulIcon* icon = GetCurrentIcon();

    if ( iOperationMode == EModeEasyDialing )

        {

        // Number layout

        TAknTextComponentLayout numLayout = 

            AknLayoutScalable_Apps::cell_dia3_key_num_pane_t1( iVariety );

        // Center the number label if key doens't contain any alphabets or icon.

        if ( !icon && !iPrimaryAlphaLabel.Length() && !iSecondaryAlphaLabel.Length() )

            {

            // eliminate margins, alignment takes care of correct position

            numLayout.Setl( 0 );

            numLayout.Setr( 0 );

            numLayout.SetJ( 1 ); // ID for center alignment

            }

        iNumberLayout.LayoutText( buttonRect, numLayout );

        // Alphabet layout is different if two rows of alphabets are given

        if ( iSecondaryAlphaLabel.Length() )

            {

            iPrimaryAlphaLayout.LayoutText( buttonRect, 

                AknLayoutScalable_Apps::cell_dia3_key_num_pane_t3( iVariety ) );

            iSecondaryAlphaLayout.LayoutText( buttonRect, 

                AknLayoutScalable_Apps::cell_dia3_key_num_pane_t4( iVariety ) );

            }

        else

            {

            iPrimaryAlphaLayout.LayoutText( buttonRect, 

                AknLayoutScalable_Apps::cell_dia3_key_num_pane_t2( iVariety ) );

            }   

        }

    else if ( iOperationMode == EModeDialer )

        {

        // Number layout

        // Center number labels as only numbers are shown

        TAknTextComponentLayout numLayout = 

            AknLayoutScalable_Apps::cell_dia3_key_num_pane_t1( iVariety );

        // eliminate margins, alignment takes care of correct position

        numLayout.Setl( 0 );

        numLayout.Setr( 0 );

        numLayout.SetJ( 1 ); // ID for center alignment

        iNumberLayout.LayoutText( buttonRect, numLayout );

        }

    else // video mode layout

        {

        // Number layout

        iNumberLayout.LayoutText( buttonRect, 

            AknLayoutScalable_Apps::cell_video_dialer_keypad_pane_t1() );

        }

    SetIconLayout( buttonRect );

    }

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

// Pointer event handling. Implemented here just to detect when touch is 

// dragged outside pressed button as no appropriate control event is sent 

// by CAknButton when this happens.

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

// 

void CDialerKeyPadButton::HandlePointerEventL( const TPointerEvent& aPointerEvent )

    {   

    // Do the check before forwarding events to base class as it will update

    // iButtonPressed member variable used here. 

    // Own drag event counter has to be used.

    // Logic here to determine whether pointer is dragged outside button is 

    // the same as used in CAknButton.

    if ( State() && IsVisible() )

        {

        if ( aPointerEvent.iType == TPointerEvent::EButton1Down )

            {

            iDragEventCounter = 0;

            }

         else if ( aPointerEvent.iType == TPointerEvent::EDrag )

            {

            iDragEventCounter++;

            if ( iDragEventCounter >= KDragEventSensitivity  )

                {

                iDragEventCounter = 0;

                TBool buttonEvent( Rect().Contains( aPointerEvent.iPosition ) );

                // Pointer is dragged outside the pressed button area

                if ( !buttonEvent && iButtonPressed && Observer() )

                    {

                    Observer()->HandleControlEventL( this,

                            static_cast<MCoeControlObserver::TCoeEvent>( 

                            CDialerKeyPadButton::EEventDraggingOutsideButton ) );

                    }

                }

            }

        }

    CAknButton::HandlePointerEventL( aPointerEvent );

    }

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

// Gets the correct text color.

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

//

void CDialerKeyPadButton::GetTextColors( TRgb& aPenColor, TRgb& aBrushColor ) const 

   { 

   aBrushColor = iEikonEnv->ControlColor( EColorControlBackground, *this ); 

   if ( iButtonPressed )

       {

       aPenColor = iEikonEnv->ControlColor( EColorButtonTextPressed, *this );

       }

   else

       {

       aPenColor = iEikonEnv->ControlColor( EColorButtonText, *this );

       }

   }

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

// Draw text and icon according to the layout.

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

//

void CDialerKeyPadButton::DrawIconAndText( CWindowGc& aGc ) const

    {

    TRect parentRect( Rect() );

    TAknLayoutText buttonText;

    TAknLayoutRect layoutRect;

    TRgb penColor;

    TRgb brushColor;

    GetTextColors( penColor, brushColor );

    // Don't ues logical-to-visual conversion, strings in our keypad resources are already

    // in visual order.

    TBool logToVisConv = EFalse;

    iNumberLayout.DrawText( aGc, iNumberLabel, logToVisConv, penColor );

    // Draw also alphabet label(s) in Easy Dialing mode

    if ( iOperationMode == EModeEasyDialing )

        {

        if ( iPrimaryAlphaLabel.Length() )

            {

            iPrimaryAlphaLayout.DrawText( aGc, iPrimaryAlphaLabel, logToVisConv, penColor );

            }

        if ( iSecondaryAlphaLabel.Length() )

            {

            iSecondaryAlphaLayout.DrawText( aGc, iSecondaryAlphaLabel, logToVisConv, penColor );

            }

        }

    const CGulIcon* icon = GetCurrentIcon();

    if ( icon )

        {

        CFbsBitmap* buttonBmp = icon->Bitmap();

        CFbsBitmap* buttonMask = icon->Mask();

        if ( buttonBmp && buttonMask )

            {

            aGc.BitBltMasked( iIconRect.iTl, buttonBmp,

                    iIconRect.Size(), buttonMask, ETrue );

            }

        }

    }

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

// Set layout data for text.

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

void CDialerKeyPadButton::SetVariety( TInt aVariety )

    {

    iVariety = aVariety;

    }

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

// Set layout data for text.

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

void CDialerKeyPadButton::SetOperationMode( TDialerOperationMode aMode ) 

    {

    iOperationMode = aMode;

    }

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

// 

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

//    

void CDialerKeyPadButton::SetNumLabel( const TDesC& aLabel )

    {

    iNumberLabel.Set( aLabel );

    }

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

// 

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

//    

void CDialerKeyPadButton::SetPrimaryAlphaLabel( const TDesC& aLabel )

    {

    iPrimaryAlphaLabel.Set( aLabel );

    }

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

// 

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

//    

void CDialerKeyPadButton::SetSecondaryAlphaLabel( const TDesC& aLabel )

    {

    iSecondaryAlphaLabel.Set( aLabel );

    }

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

// 

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

//    

TInt CDialerKeyPadButton::ScanCode() const

    {

    return iScanCode;

    }

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

// 

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

//    

TInt CDialerKeyPadButton::KeyCode() const

    {

    return iKeyCode;

    }

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

// 

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

//

void CDialerKeyPadButton::MapDialerIconToSkinIcon( 

        TInt aDialerIcon, TAknsItemID& aItemId ) const

    {    

     switch ( aDialerIcon )

        {       

        case EMbmDialerQgn_indi_dialer_voicemail:

            aItemId = KAknsIIDQgnIndiDialerVoicemail;

            break; 

        default:

            break;

        }

    }   

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

// 

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

//

void CDialerKeyPadButton::SetIconLayout( const TRect& aRect )

    {

    // Calculate icon size and placement.

    TInt iconSize = aRect.Height() * KIconSizePercent / KCent;

    TInt xMargin = aRect.Width() * KIconMarginXPercent / KCent;

    TInt yMargin = aRect.Height() * KIconMarginYPercent / KCent;

    // Adapt icon size and vertical margin. If the button has 

    // already two lines of text, use smaller icon size

    if ( iOperationMode == EModeEasyDialing && iSecondaryAlphaLabel.Length() )

        {

        iconSize = aRect.Height() * KSmallIconSizePercent / KCent;

        yMargin = 0;

        }

    if ( AknLayoutUtils::LayoutMirrored() )

        {

        iIconRect.SetRect( aRect.iTl.iX + xMargin,

                aRect.iTl.iY + yMargin, 

                aRect.iTl.iX + xMargin + iconSize, 

                aRect.iTl.iY + iconSize + yMargin );

        }

    else 

        {

        iIconRect.SetRect( aRect.iBr.iX - iconSize - xMargin,

                aRect.iTl.iY + yMargin, 

                aRect.iBr.iX - xMargin, 

                aRect.iTl.iY + iconSize + yMargin );

        }

    SetIconSize( iIconRect.Size() );

    }

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

// Update icon when skin is changed

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

//

void CDialerKeyPadButton::UpdateIconL()

    {

    if ( KDialerNoIcon != iButtonIconId )

        {

        TFileName mifPath( KDriveZ );

        mifPath.Append( KDC_APP_BITMAP_DIR );

        mifPath.Append( KDialerMifFileName );

        MAknsSkinInstance* skin = AknsUtils::SkinInstance();

        CFbsBitmap* bitmap (NULL);

        CFbsBitmap* mask (NULL);

        // Get icon id.

        TAknsItemID skinItemId( KAknsIIDNone );  

        MapDialerIconToSkinIcon( iButtonIconId, skinItemId );

        AknsUtils::CreateColorIconLC( 

                skin, 

                skinItemId,

                KAknsIIDQsnIconColors, 

                EAknsCIQsnIconColorsCG30,

                bitmap, 

                mask, 

                mifPath, 

                iButtonIconId, 

                iButtonIconMaskId,

                KRgbBlack

                );

        CGulIcon* icon = CGulIcon::NewL( bitmap, mask );

        CleanupStack::Pop( 2 );

        State()->SetIcon( icon ); // icon ownership transfered

        }

    }  

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

// 

// Enable or disable audio but keep vibra feedback 

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

//   

void CDialerKeyPadButton::EnableAudioFeedback( const TBool aEnable )

    {

    MTouchFeedback* feedback = MTouchFeedback::Instance();

    if ( feedback )

        {

        feedback->EnableFeedbackForControl( this, ETrue, aEnable );

        }

    }

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

// 

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

//

void CDialerKeyPadButton::HandleResourceChange( TInt aType )

    {