/*

* Copyright (c) 2009 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 of screensaver plugin display object class.

*

*/

#include <AknDef.h>

#include <power_save_display_mode.h>

#include "ScreensaverpluginIntDef.h"

#include "screensaverctrlplugin.h"

#include "screensaverview.h"

#include "screensaverappui.h"

#include "screensaverutility.h"

#include "ScreensaverUtils.h"

#include "screensavershareddatai.h"

// If plugin refresh rate is lower than this threshold, wserv heartbeat

// is stopped between redraws

const TInt KStopWsHbPluginRefreshThreshold = 1000000; // 1 sec

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

// CScreensaverCtrlPlugin::NewL

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

//

CScreensaverCtrlPlugin* CScreensaverCtrlPlugin::NewL()

    {

    CScreensaverCtrlPlugin* self = new( ELeave ) CScreensaverCtrlPlugin();

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

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

// CScreensaverCtrlPlugin::~CScreensaverCtrlPlugin

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

//

CScreensaverCtrlPlugin::~CScreensaverCtrlPlugin()

    {

    DeleteTimer( iPluginRefreshTimer );

    DeleteTimer( iPluginTimeoutTimer );

    DeletePlugin();

    }

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

// CScreensaverCtrlPlugin::StartTimer

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

//

void CScreensaverCtrlPlugin::StartTimer()

    {

    // Notify plugin that screensaver is starting

    SendPluginEvent( EScreensaverEventStarting );

    StartPluginRefreshTimer();

    if ( RefreshTimerValue() >= KStopWsHbPluginRefreshThreshold )

        {

        StartCaptureScreenTimer();

        }

    }

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

// CScreensaverCtrlPlugin::CancelTimer

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

//

void CScreensaverCtrlPlugin::CancelTimer()

    {

    DeleteTimer( iPluginRefreshTimer );

    DeleteTimer( iPluginTimeoutTimer );

    SendPluginEvent( EScreensaverEventStopping );

    }

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

// CScreensaverCtrlPlugin::DrawObject

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

//

void CScreensaverCtrlPlugin::DrawObject()

    {

    CScreensaverBase::DrawObject();

    if( iPluginFlag.IsSet( EPluginFlagSuspend ) )

    	{

    	Suspend( -1 );

    	iPluginFlag.Clear( EPluginFlagSuspend );

    	}

    }

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

// CScreensaverCtrlPlugin::ClearScreen

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

//

void CScreensaverCtrlPlugin::ClearScreen()

    {

    }

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

// CScreensaverCtrlPlugin::Refresh

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

//

void CScreensaverCtrlPlugin::Refresh()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlPlugin::Refresh start") );

    // Currently only keylock indicator is updated, because

    // thats the only indicator whose state may change while screensaver

    // is displaying. Other indicators' state changing also dismisses

    // screensaver. Once redisplaying, the indicators are updated anyway.

    // Key lock indicator depends on status of key guard.

    Array().SetDependencyStatus( ESsKeyLockInd, !Model().SharedDataInterface()->IsKeyguardOn() );

    Array().SetVisibilityForIndicators();

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlPlugin::Refresh DrawObject") );

    // Cause a redraw

    DrawObject();

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlPlugin::Refresh finish") );

    }

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

// CScreensaverCtrlPlugin::SendPluginEvent

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

//

TInt CScreensaverCtrlPlugin::SendPluginEvent( TScreensaverEvent aEvent )

    {

    if ( iPlugin )

        {

        TRAPD( err, iPlugin->HandleScreensaverEventL( aEvent, NULL ) );

        return err;

        }

    return KErrNone;

    }

// From MScreensaverPluginHost

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

// CScreensaverCtrlPlugin::UseStandardIndicators

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

//

void CScreensaverCtrlPlugin::UseStandardIndicators()

    {

    SCRLOGGER_WRITE("Host: UseStandardIndicators()");

    iPluginFlag.Clear( EPluginFlagOverrideIndicators );

    }

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

// CScreensaverCtrlPlugin::OverrideStandardIndicators

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

//

void CScreensaverCtrlPlugin::OverrideStandardIndicators()

    {

    SCRLOGGER_WRITE("Host: OverrideStandardIndicators()");

    iPluginFlag.Set( EPluginFlagOverrideIndicators );

    }

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

// CScreensaverCtrlPlugin::StandardIndicatorsUsed

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

//

TBool CScreensaverCtrlPlugin::StandardIndicatorsUsed() const

    {

    SCRLOGGER_WRITE("Host: StandardIndicatorsUsed()");

    return iPluginFlag.IsClear( EPluginFlagOverrideIndicators );

    }

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

// CScreensaverCtrlPlugin::SetRefreshTimerValue

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

//

void CScreensaverCtrlPlugin::SetRefreshTimerValue( TInt aValue )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: SetRefreshTimerValue(%d)"), aValue );

    iPluginRefreshRate = aValue;

    iPluginFlag.Clear( EPluginFlagTimerNotUsed );

    }

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

// CScreensaverCtrlPlugin::RefreshTimerValue

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

//

TInt CScreensaverCtrlPlugin::RefreshTimerValue() const

    {

    SCRLOGGER_WRITE("Host: RefreshTimerValue()");

    return iPluginRefreshRate;

    }

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

// CScreensaverCtrlPlugin::GetIndicatorPayload

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

//

TInt CScreensaverCtrlPlugin::GetIndicatorPayload( 

    TScreensaverIndicatorIndex aIndex, TIndicatorPayload& aResult ) const

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: GetIndicatorPayload(%d, %x)"),

        aIndex, &aResult );

    return Model().IndicatorArray().GetIndicatorPayload( ( TScreensaverIndicatorId ) aIndex, aResult );

    }

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

// CScreensaverCtrlPlugin::SetActiveDisplayArea

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

//

TInt CScreensaverCtrlPlugin::SetActiveDisplayArea( 

    TRect& aRect, const TScreensaverPartialMode& aMode )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: SetActiveDisplayArea(<rect>, %d)"), aMode );

    SCRLOGGER_WRITEF( _L("    -> rect: (%d, %d, %d, %d)"),

        aRect.iTl.iX, aRect.iTl.iY, aRect.iBr.iX, aRect.iBr.iY );

    // Make sure everything is in display memory

    ScreensaverUtility::FlushDrawBuffer();

    // Save the active area

    TInt err = SetPowerSaveDisplayActiveArea( aRect );

    if ( err == KErrNone )

        {

        // And activate power save display. Full mode = full colors

//        err = ActivatePowerSaveDisplay( aMode.iType

//            == EPartialModeTypeFull );

        }

    return err;

    }

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

// CScreensaverCtrlPlugin::SetActiveDisplayArea

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

//

TInt CScreensaverCtrlPlugin::SetActiveDisplayArea( 

    TInt aStartRow, TInt aEndRow, const TScreensaverPartialMode& aMode )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: SetActiveDisplayArea(%d, %d, %d)"),

        aStartRow, aEndRow, aMode );

    TRect psRect( 0, aStartRow, 1, aEndRow);

    return SetActiveDisplayArea( psRect, aMode );

    }

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

// CScreensaverCtrlPlugin::ExitPartialMode

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

//

void CScreensaverCtrlPlugin::ExitPartialMode()

    {

    SCRLOGGER_WRITE("Host: ExitPartialMode()");

    LcdPartialMode()->Exit();

    // Make sure the partial area is empty

    // Make this less idiotic

    TRect psRect( 0, 0, 0, 0);

    SetPowerSaveDisplayActiveArea( psRect );

    }

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

// CScreensaverCtrlPlugin::GetColorModel

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

//

const TScreensaverColorModel& CScreensaverCtrlPlugin::GetColorModel() const

    {

    SCRLOGGER_WRITE("Host / Own use: GetColorModel()");

    return Model().GetColorModel();

    }

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

// CScreensaverCtrlPlugin::Suspend

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

//

void CScreensaverCtrlPlugin::Suspend( TInt aTime )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: Suspend(%d)"), aTime );

    View()->SetDisplayObject( Model().SharedDataInterface()->DefaultScreensaverType() );

    CScreensaverEngine& model = MUTABLE_CAST( CScreensaverEngine&, Model() );

    model.SetExpiryTimerTimeout( KDefaultScreenSaverTimeout );

    View()->ShowDisplayObject();

    if ( aTime >= 0 )

        {

        model.StartSuspendTimer( aTime );

        }

    }

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

// CScreensaverCtrlPlugin::RequestLights

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

//

void CScreensaverCtrlPlugin::RequestLights( TInt aSecs )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: RequestLights(%d)"), aSecs );

    if ( aSecs <= 0 )

        {

        // Turn lights off, kill lights timer

        Model().SharedDataInterface()->SetSSForcedLightsOn( 0 );

        }

    else

        {

        // Make sure nobody tries to overextend our hospitality

        TInt secs = (aSecs > KMaxLightsOnTime) ? KMaxLightsOnTime : aSecs;

        // Turn lights on, start lights timer

        Model().SharedDataInterface()->SetSSForcedLightsOn( secs );

        }

    }

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

// CScreensaverCtrlPlugin::DisplayInfo

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

//

TInt CScreensaverCtrlPlugin::DisplayInfo( TScreensaverDisplayInfo* aInfo )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: DisplayInfo(%x)"), aInfo );

    if ( !aInfo )

        {

        return KErrArgument;

        }

    // Sanity check: the indicated size of the info struct should be

    // same or less than the actual size (allows for extensibility)

    if ( aInfo->iSize > sizeof( TScreensaverDisplayInfo ) )

        {

        ASSERT( EFalse );

        return KErrArgument;

        }

    // Fill our own perception of the info structure

    TScreensaverDisplayInfo info;

    info.iSize = aInfo->iSize;

    // Currently whole screen

    info.iRect = CCoeEnv::Static()->ScreenDevice()->SizeInPixels();

    info.iParent = this;

    // Copy only the size of the caller struct

    Mem::Copy( aInfo, &info, aInfo->iSize );

    return KErrNone;

    }

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

// CScreensaverCtrlPlugin::UseRefreshTimer

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

//

void CScreensaverCtrlPlugin::UseRefreshTimer( TBool aOn )

    {

    SCRLOGGER_WRITEF( _L("SCR: Host: UseRefreshTimer(%d)"), aOn );

    if ( aOn )

        {

        // Use normal timer, plugin timer allowed

        iPluginFlag.Clear( EPluginFlagTimerNotUsed );

        }

    else

        {

        // Plugin does not want Draw() calls, let timer tick the usual way

        iPluginFlag.Set( EPluginFlagTimerNotUsed );

        }

    }

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

// CScreensaverCtrlPlugin::RequestTimeout

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

//

void CScreensaverCtrlPlugin::RequestTimeout( TInt aSecs )

    {

    CScreensaverEngine& model = MUTABLE_CAST( CScreensaverEngine&, Model() );

    model.SetExpiryTimerTimeout( 0 );

    StartPluginTimeoutTimer( aSecs );

    }

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

// CScreensaverCtrlPlugin::RevertToDefaultSaver

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

//

void CScreensaverCtrlPlugin::RevertToDefaultSaver()

    {

    SCRLOGGER_WRITE("Host: RevertToDefaultSaver()");

    Model().SharedDataInterface()->SetDisplayObjectType( 

        Model().SharedDataInterface()->DefaultScreensaverType() );

    }

// --- end MScreensaverPluginHost ---

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

// CScreensaverCtrlPlugin::CScreensaverCtrlPlugin

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

//

CScreensaverCtrlPlugin::CScreensaverCtrlPlugin()

    :iPluginFlag()

    {

    }

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

// CScreensaverCtrlPlugin::ConstructL

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

//

void CScreensaverCtrlPlugin::ConstructL()

    {

    iPluginFlag.ClearAll();

    CreateWindowL();

    SetRect( iCoeEnv->ScreenDevice()->SizeInPixels() );

    ConstructAndConnectLCDL();

    LoadPluginL( this );

    ActivateL();

    // Notify plugin that display control has changed

    SendPluginEvent( EScreensaverEventDisplayChanged );

    if( Model().ScreenSaverIsPreviewing() )

        {

        SendPluginEvent( EScreensaverEventPreview );

        }

    }

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

// CScreensaverCtrlPlugin::HandleResourceChange

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

//

void CScreensaverCtrlPlugin::HandleResourceChange( TInt aType )

    {

    if ( aType == KEikDynamicLayoutVariantSwitch )

        {

        // Screen layout has changed - resize

        SetRect( iCoeEnv->ScreenDevice()->SizeInPixels() );

        // Notify plugin that the display has changed

        SendPluginEvent( EScreensaverEventDisplayChanged );

        }

    }

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

// CScreensaverCtrlPlugin::SizeChanged

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

//

void CScreensaverCtrlPlugin::SizeChanged()

    {

    }

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

// CScreensaverCtrlPlugin::Draw

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

//

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

    {

    if ( !Model().ScreenSaverIsOn() && !Model().ScreenSaverIsPreviewing() )

        {

        return;

        }

    // Graphics context to draw on.

    CWindowGc& gc = SystemGc();

    // Fix for error ESMG-74Y4PE - S60 3.2 wk26, Power Saver: 

    // Flickering when power saver is deactivated.

    // We now clear the screen with a black brush so the screensaver 

    // background is changed to black. There will no longer be a white

    // intermediate screen and this will reduce the "flicker" effect.

    gc.SetBrushColor( KRgbBlack );

    // Start with a clear screen

    // If there is no plugin module, indicator view overrides plugin module or

    // plugin drawing is suspended then the standard screensaver bar is shown,

    // let's draw it.

        // Let plugin module handle the drawing, unless not requested

    TInt err = KErrNone;

    if ( iPluginFlag.IsClear( EPluginFlagTimerNotUsed ) )

        {

        err = iPlugin->Draw( gc );

        }

    //Notice:add this code to shield the issue ELWG-7SF3R3.

    //Prevent screensaver plugin from being called unexpected draw function,

    //which would cause chosen images are not displayed.

    //Check the err code return by iPlugin->Draw:

    //If draw action is correct and iPluginFlag has already been set EPluginFlagSuspend,

    //then clear this EPluginFlagSuspend

    if ( KErrNone == err && iPluginFlag.IsSet( EPluginFlagSuspend ) )

        {

        iPluginFlag.Clear( EPluginFlagSuspend );

        }

    if( err != KErrNone )

        {

        iPluginFlag.Set( EPluginFlagSuspend );

        }

    }

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

// CScreensaverCtrlPlugin::LoadPluginL

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

//

void CScreensaverCtrlPlugin::LoadPluginL(  MScreensaverPluginHost* /*aPluginHost*/ )

    {

    DeletePlugin();

    LoadPluginModuleL();

    User::LeaveIfNull( iPlugin );

    }