/*

* Copyright (c) 2006-2008 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:  Button for touch pane.

*

*/

#include <AknBidiTextUtils.h>

#include <AknsDrawUtils.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <gulicon.h>

#include <barsread.h> 

#include <AknsFrameBackgroundControlContext.h>

#include <AknsConstants.h>

#include <phoneappcommands.hrh>

#include "BMTouchPaneButton.h"

#include "BMTouchPaneInterface.h"

#include "BMPanic.h"

const TInt KDimmedTransparency = 77;

const TInt KBubbleButtonText = 255;

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

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

// C++ default constructor

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

//

CBubbleTouchPaneButton::CBubbleTouchPaneButton(

    MBubbleTouchPaneIconProvider* aIconProvider,

    const TInt aFlags ) :

    CAknButton( aFlags ),

    iIconProvider( aIconProvider )

    {

    }

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

// Two-phased constructor.

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

//

CBubbleTouchPaneButton* CBubbleTouchPaneButton::NewL( 

        MBubbleTouchPaneIconProvider* aIconProvider, 

        const TInt aFlags )

    {

    CBubbleTouchPaneButton* self = 

    new(ELeave) CBubbleTouchPaneButton( aIconProvider, aFlags );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Symbian 2nd phase constructor 

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

//

void CBubbleTouchPaneButton::ConstructL()

    {

    CAknButton::ConstructL();

    }

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

// Destructor

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

//

CBubbleTouchPaneButton::~CBubbleTouchPaneButton()

    {

    iCommands.Close();   

    }

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

// CBubbleTouchPaneButton::ConstructFromResouceL

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

//

void CBubbleTouchPaneButton::ConstructFromResouceL( TResourceReader& aReader )

    {

    TInt commandCount = aReader.ReadInt16();

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

        {

        TInt command = aReader.ReadInt16();

        iCommands.AppendL( command );

        }

    aReader.ReadInt16(); // this is mystery?

    CAknButton::ConstructFromResourceL( aReader );

    SelectTextColor();

    // Customize icons

    if ( iIconProvider )

        {

        LoadCustomIcons( *iIconProvider );

        }

    if ( State()->Icon() )

        {

        SetIconScaleMode( EAspectRatioPreserved );

        }

    }

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

// CBubbleTouchPaneButton::LoadCustomIconsL

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

//    

void CBubbleTouchPaneButton::LoadCustomIcons(

    MBubbleTouchPaneIconProvider& aIconProvider )

    {

    TInt commandCount = iCommands.Count();

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

        {

        CGulIcon* icon = NULL;

        TRAPD( err, icon = aIconProvider.GetIconForCommandL( 

                               iCommands[i] ) );

        if ( !err && icon )       

            {

            CAknButtonState* state = State( i );

            // State takes ownership of icon

            state->SetIcon( icon );                

            }

        }    

    }

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

// CBubbleTouchPaneButton::CommandId

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

//

TInt CBubbleTouchPaneButton::CommandId( TBool aPreviousState ) const

    {

    __ASSERT_DEBUG( iCommands.Count(), Panic( EBMPanicTouchPane ) );

    TInt command;

    if ( iCommands.Count() > 1 )

        {

        TInt index =  StateIndex();

        if ( aPreviousState )

            {

            // return command from previous state

            index -= 1;

            if ( index < 0 )

                {

                index = iCommands.Count() - 1;    

                }

            }

        command = iCommands[index];            

        }

    else

        {

        command = iCommands[0];    

        }        

    return command;    

    }    

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

// CBubbleTouchPaneButton::SetState

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

//    

void CBubbleTouchPaneButton::SetState( TInt aCommand,

                                       TBool aDrawNow )

    {

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

        {

        if ( iCommands[i] == aCommand )

            {

            if ( i != StateIndex() )

                {

                SetCurrentState( i, aDrawNow );                

                }

            }

        }

    }

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

// CBubbleTouchPaneButton::SetDimmed

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

//

void CBubbleTouchPaneButton::SetDimmed( TBool aDimmed )

    {

    CAknButton::SetDimmed( aDimmed );

    DrawDeferred();                

    }

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

// CBubbleTouchPaneButton::HasState

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

//   

TBool CBubbleTouchPaneButton::HasState( TInt aCommand ) const

    {

    TBool hasState = EFalse;

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

        {

        if ( iCommands[i] == aCommand )

            {

            hasState = ETrue;

            break;    

            }

        }

    return hasState;

    }

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

// Draw button, text and icon.

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

// 

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

    {

    TAknsItemID frameId( KAknsIIDQsnFrButtonNormal );

    TAknLayoutRect centerLayout;

    centerLayout.LayoutRect( aRect,

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

    TRect innerRect = centerLayout.Rect();

    CWindowGc& gc = SystemGc();

    MAknsSkinInstance* skin = AknsUtils::SkinInstance();

    TInt commandCount = iCommands.Count();

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

        {

        TRAP_IGNORE( frameId = iIconProvider->GetButtonForCommandL( 

                                   iCommands[i]));

        if ( iButtonPressed )

            {

            frameId = SelectPressedButton( frameId );

            }

        else if ( IsDimmed() )

            {

            frameId = SelectDimmedButton( frameId );

            }

        iBgContext->SetFrame( frameId );

        iBgContext->SetCenter( KAknsIIDQsnFrButtonCenterNormal );

        iBgContext->SetFrameRects( aRect, innerRect );

        if ( !AknsDrawUtils::Background( skin, 

                                        iBgContext, 

                                        NULL, 

                                        gc, 

                                        aRect, 

                                        KAknsDrawParamNoClearUnderImage ) )

            {

            gc.SetBrushColor( KRgbRed );

            gc.SetBrushStyle( CGraphicsContext::ESolidBrush );

            gc.DrawRect( aRect );

            }

        LayoutIconAndText( gc );

        }

    }

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

// Draw text and icon according to the layout.

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

void CBubbleTouchPaneButton::LayoutIconAndText( CWindowGc& aGc ) const

    {

    TRect parentRect( Rect() );

    CAknButtonState* state = State();

    if ( !state  ||       

         !state->Icon() ||

         !state->Text().Length() )

        {

        return;

        }    

    TRgb penColor;

    TRgb brushColor;

    GetTextColors( penColor ); 

    // buffer for visually ordered text

    TBuf< KBubbleButtonText + KAknBidiExtraSpacePerLine> visualText; 

    TInt clipWidth = iLayoutText.TextRect().Width();

    // bidi processing - using AknBidiTextUtils.

    AknBidiTextUtils::ConvertToVisualAndClip(

        state->Text(),

        visualText,

        *iLayoutText.Font(),

        clipWidth,

        clipWidth );

    iLayoutText.DrawText( aGc, visualText, EFalse, 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 );

            }

        }

    }

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

// CBubbleTouchPaneButton::SetLayout

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

//

void CBubbleTouchPaneButton::SetLayout( const TAknLayoutText aLayoutText,

                                        const TRect aIconRect ) 

    {

    iLayoutText = aLayoutText;

    iIconRect = aIconRect;

    }    

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

// CBubbleTouchPaneButton::HandleResourceChange

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

//

void CBubbleTouchPaneButton::HandleResourceChange( TInt aType )

    {

    CAknButton::HandleResourceChange( aType );

    if ( aType == KAknsMessageSkinChange &&

         iIconProvider )

        {

        LoadCustomIcons( *iIconProvider );

        }    

    }

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

// Gets the correct text color.

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

//

void CBubbleTouchPaneButton::GetTextColors( TRgb& aPenColor ) const 

   { 

   if ( IsDimmed() ) 

       {

       // Using parameter EColorButtonTextDimmed does not return valid 

       // color for the text that is used in dimmed button. We have 

       // to use default text and set it transparent.

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

       aPenColor.SetAlpha( KDimmedTransparency );

       }

   else if ( iButtonPressed )

       {

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

       }

   else

       {

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

       }

   }

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

// Selects the correct pressed button.

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

//

TAknsItemID CBubbleTouchPaneButton::SelectPressedButton( TAknsItemID frameId ) const

   { 

   if( frameId == KAknsIIDQsnFrButtonNormalAnswer )

       {

       return KAknsIIDQsnFrButtonPressedAnswer;

       }

   else if( frameId == KAknsIIDQsnFrButtonNormalReject )

       {

       return KAknsIIDQsnFrButtonPressedReject;

       }

   else

       {

       return KAknsIIDQsnFrButtonPressed;

       }

   }

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

// Selects the correct dimmed button.

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

//

 TAknsItemID CBubbleTouchPaneButton::SelectDimmedButton( TAknsItemID frameId ) const

   {

   if( frameId == KAknsIIDQsnFrButtonNormalAnswer )

       {

       return KAknsIIDQsnFrButtonInactiveAnswer;

       }

   else if( frameId == KAknsIIDQsnFrButtonNormalReject )

       {

       return KAknsIIDQsnFrButtonInactiveReject;

       }

   else

       {

       return KAknsIIDQsnFrButtonInactive;

       }

   }

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

// Selects the correct text color.

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

//

void CBubbleTouchPaneButton::SelectTextColor() 

    { 

    TAknsQsnTextColorsIndex textColorIndex( EAknsCIQsnTextColorsCG65 );

    TInt command = CommandId( EFalse );

    if ( command == EPhoneCallComingCmdAnswer )

        {

        textColorIndex = EAknsCIQsnTextColorsCG82;

        }

    else if ( command == EPhoneCallComingCmdReject )

        {

        textColorIndex = EAknsCIQsnTextColorsCG83;

        }

    // function button text color

    SetTextColorIds( KAknsIIDQsnTextColors, textColorIndex );

    }