/*

* Copyright (c) 2003 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 moving text display class.

*

*/

#ifdef USE_DATE_AND_TEXT

#include <e32def.h>

#include <eikdef.h>

#include <AknUtils.h>

#include <e32math.h>

#include <aknlayoutscalable_avkon.cdl.h>

#include <screensaver.rsg>

#include "screensaverappui.h"

#include "screensavershareddatai.h"

#include "ScreensaverUtils.h"

#include "screensaverutility.h"

#include "screensaverctrlmovingtext.h"

const TInt KInvertedColors = 1;

//The color for text and background

const TInt KInvertedBgColor = 215;

const TInt KInvertedTextColor = 0;

const TInt KInvertedTextBgColor = 215;

const TInt KBgColor = 0;

const TInt KTextColor = 215;

const TInt KTextBgColor = 210;

// the minimum top value

const TInt KMinTop = 4;

const TInt KRefreshRate = 60000000; // 60 sec

//

// Class CScreensaverCtrlMovingText

//

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

// CScreensaverCtrlMovingText::NewL

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

//

CScreensaverCtrlMovingText* CScreensaverCtrlMovingText::NewL( TDisplayObjectType aType )

    {

    CScreensaverCtrlMovingText* obj = new( ELeave ) CScreensaverCtrlMovingText( aType );

    CleanupStack::PushL( obj );

    obj->ConstructL();

    CleanupStack::Pop();

    return obj;

    }

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

// CScreensaverCtrlMovingText::~CScreensaverCtrlMovingText

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

//

CScreensaverCtrlMovingText::~CScreensaverCtrlMovingText()

    {

    iEikonEnv->RemoveFromStack( this );

    DeleteTimer( iBarRefreshTimer );

    DeleteTimer( iCaptureScreenTimer );

    }

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

// CScreensaverCtrlMovingText::HandleResourceChange

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

//

void CScreensaverCtrlMovingText::HandleResourceChange( TInt aType )

    {

    if ( aType == KEikDynamicLayoutVariantSwitch )//&& iType != EDisplayNone)

        {

        // Screen layout has changed - resize

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

        }

    }

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

// CScreensaverCtrlMovingText::SizeChanged

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

//

void CScreensaverCtrlMovingText::SizeChanged()

    {

    GenerateDisplayAttributesForScreensaverBar();

    }

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

// CScreensaverCtrlMovingText::Draw

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

//

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

    {

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

        {

        return;

        }

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::Draw, screensaver is on or previewing") );

    // 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

    gc.Clear( aRect );

    // 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.

    DrawNew( gc, aRect );

    // Activate power save display mode after draw, so that

    // the image is already in screen buffer

    ScreensaverUtility::FlushDrawBuffer(); 

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::Draw, draw finished") );

    }

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

// CScreensaverCtrlMovingText::SetMoving

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

//

void CScreensaverCtrlMovingText::SetMoving( TBool aMove )

    {

    iMoveBar = aMove;

    }

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

// CScreensaverCtrlMovingText::StartTimer

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

//

void CScreensaverCtrlMovingText::StartTimer()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::StartTimer start") );

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

    StartCaptureScreenTimer();

    StartBarRefreshTimer();

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::StartTimer finish") );

    }

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

// CScreensaverCtrlMovingText::CancelTimer

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

//

void CScreensaverCtrlMovingText::CancelTimer()

    {

    DeleteTimer( iBarRefreshTimer );

    DeleteTimer( iCaptureScreenTimer );

    }

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

// CScreensaverCtrlMovingText::ClearScreen

// Date & time saver

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

//

void CScreensaverCtrlMovingText::ClearScreen()

    {

    }

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

// CScreensaverCtrlMovingText::Refresh

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

//

void CScreensaverCtrlMovingText::Refresh()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::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.

    TIndicatorPayload payload;

    payload.iType = EPayloadTypeInteger;

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

    payload.iInteger = Model().SharedDataInterface()->UnreadMessagesNumber();

    Array().SetIndicatorPayload( ESsNewMessagesInd, payload );

    Array().SetDependencyStatus( ESsNewMessagesInd, ( payload.iInteger <= 0 ) );

    Array().SetDependencyStatus( ESsVoicemailInd, !Model().SharedDataInterface()->IsHaveNewVoicemail() );

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::Refresh move") );

    // Don't move bar during this refresh

    SetMoving( EFalse );

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

    // Cause a redraw

    DrawObject();

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::Refresh move") );

    // Allow moving

    SetMoving();

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

    }

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

// CScreensaverCtrlMovingText::CScreensaverCtrlMovingText

// Date & time saver

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

//

CScreensaverCtrlMovingText::CScreensaverCtrlMovingText( TDisplayObjectType aType )

    :iType( aType )

    {

    // No implementation required

    }

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

// CScreensaverCtrlMovingText::ConstructL

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

//

void CScreensaverCtrlMovingText::ConstructL()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::ConstructL start") );

    if ( iType == EDisplayText )

        {

        iPictoI = CAknPictographInterface::NewL( *this, *this );

        }

    iTop = KMinTop;

    iRandSeed = RandomSeed();

    iMoveBar = ETrue;

    GetTextAndBgColor();

    CreateWindowL();

    // Cannot do this earlier - it'll cause a SizeChanged()

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

    iEikonEnv->EikAppUi()->AddToStackL(

        this, ECoeStackPriorityEnvironmentFilter, ECoeStackFlagRefusesFocus );

    ConstructAndConnectLCDL();

    ActivateL();

    }

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

// CScreensaverCtrlMovingText::DrawNew

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

//

void CScreensaverCtrlMovingText::DrawNew( CWindowGc& aGc, const TRect& /* aRect */) const

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::DrawNew start") );

    // Draw bar background

    iLayoutBar.DrawRect( aGc );

    // Draw clock 

    iLayoutClock.DrawRect( aGc );

    iLayoutClockText.DrawText( aGc, iTextTime );

    // Draw date / user text

    iLayoutDate.DrawRect( aGc );

    DrawText( aGc );

    // Draw indicators

    Array().Draw( aGc );

    }

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

// CScreensaverCtrlMovingText::DrawPictoText

// Draws text with pictographs

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

//

void CScreensaverCtrlMovingText::DrawPictoText( CWindowGc &aGc ) const

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::DrawPictoText start") );

    // Draw text and possible pictographs

    MAknPictographDrawer* pictoDrawer = iPictoI->Interface();

    ASSERT( pictoDrawer );

    if ( ( !pictoDrawer ) || ( !pictoDrawer->ContainsPictographs( iText ) ) )

        {

        // Just draw normally

        iLayoutDateText.DrawText( aGc, iText );

        return;

        }

    // Else draw normal text with pictographs

    aGc.UseFont( iLayoutDateText.Font() );

    aGc.SetPenColor( iLayoutDateText.Color() );

    // Calculating the offset (unfortunately not public in TAknLayoutText)

    // copied from AknUtils TAknLayoutText::LayoutText()

    pictoDrawer->DrawText( aGc, *iLayoutDateText.Font(), iText,

        iLayoutDateText.TextRect(), iLayoutDateText.Font()->AscentInPixels(), 

        iLayoutDateText.Align() );

    }

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

// CScreensaverCtrlMovingText::DrawText

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

//

void CScreensaverCtrlMovingText::DrawText( CWindowGc& aGc ) const

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::DrawText start") );

    if ( iPictoI )

        {

        // Draw text and pictographs in the layout

        DrawPictoText( aGc );

        }

    else

        {

        // Draw just text

        iLayoutDateText.DrawText( aGc, iText );

        }

    }

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

// CScreensaverCtrlMovingText::UpdateCurrentTimeL

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

//

void CScreensaverCtrlMovingText::UpdateCurrentTimeL()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::UpdateCurrentTimeL start") );

    // AVKON does not have proper format string for just time,

    // load from own resources

    FormatTextFromResourceL( iTextTime, R_SCREENSAVER_TIME_USUAL_WITHOUT_AMPM );

    if ( iType == EDisplayTime )

        {

        FormatTextFromResourceL( iText, R_QTN_DATE_USUAL_WITH_ZERO );

        }

    else

        {

        Model().SharedDataInterface()->GetDisplayObjectText( iText );

        }

    SetAmPmIndicatorPayloadL();

    // Convert numbers according to language

    }

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

// CScreensaverCtrlMovingText::GenerateDisplayAttributesForScreensaverBar

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

//

void CScreensaverCtrlMovingText::GenerateDisplayAttributesForScreensaverBar( )

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::GenerateDisplayAttributesForScreensaverBar start") );

    // Zero out power save area, it should then be set before power save

    // mode can be activated (also by plugins)

    iPowerSaveDisplayActiveArea.SetRect( 0, 0, 0, 0 );

    // Cool! We got scalable layouts. Use them.

    TAknWindowComponentLayout barLayoutComponent = 

        AknLayoutScalable_Avkon::power_save_pane();

    iLayoutBar.LayoutRect( Rect(), barLayoutComponent.LayoutLine() );

    // Add bar height from layout to get total bar height

    TInt barHeight = iLayoutBar.Rect().Height();

    // Plain refresh, no move?

    if ( iMoveBar )

        {

        // Get random values for bar position and color.

        GetRandomTopValue( iLayoutBar.Rect().Height() );

        }

    // Create a rect with the new top to be used as layout rect

    TRect fakeScreen( Rect() );

    fakeScreen.iTl.iY = iTop;

    // Layout components

    // Bar itself

    iLayoutBar.LayoutRect( fakeScreen, barLayoutComponent.LayoutLine() );

    TRect barRect = iLayoutBar.Rect();

    // Clock (area + text)

    GetClockLayout( barRect );

    // Date (area + text)

    GetDateLayout( barRect );

    // Indicators (area + text)

    GetIndicatorAreaLayout( barRect );

    // Update current time

    TRAP_IGNORE( UpdateCurrentTimeL() );

    // Since it is known for sure at this point that screensaver

    // bar will be drawn the partial mode can activated for bar area

    // if it is supported by display hardware.

    const TScreensaverColorModel& colorModel = Model().GetColorModel();

    if ( colorModel.iNumberOfPartialModes > 0 )

        {

        TRect psRect( iLayoutBar.Rect() );

        SetPowerSaveDisplayActiveArea( psRect );

        }

    }

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

// CScreensaverCtrlMovingText::GetRandomTopValue

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

//

void CScreensaverCtrlMovingText::GetRandomTopValue( TInt aBarHight )

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::GetRandomTopValue start") );

    TInt range( iCoeEnv->ScreenDevice()->SizeInPixels().iHeight - aBarHight - 1 - 4 );

    TInt rand = Math::Rand( iRandSeed );

    rand %= range;

    iTop = ( rand > 3 ) ? ( rand/4 ) * 4 : 4;

    }

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

// CScreensaverCtrlMovingText::RandomValue

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

//

TInt CScreensaverCtrlMovingText::RandomSeed()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::RandomSeed start") );

    TTime time;

    time.HomeTime();

    return time.DateTime().MicroSecond();

    }

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

// CScreensaverCtrlMovingText::GetTextAndBgColor

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

//

void CScreensaverCtrlMovingText::GetTextAndBgColor()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::GetTextAndBgColor start") );

    if( Model().SharedDataInterface()->IsInvertedColors() == KInvertedColors )

        {

        iBgColor = KInvertedBgColor;

        iTextColor = KInvertedTextColor;

        iTextBgColor = KInvertedTextBgColor;

        }

    else

        {

        iBgColor = KBgColor;

        iTextColor = KTextColor;

        iTextBgColor = KTextBgColor;

        }

    }

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

// CScreensaverCtrlMovingText::FormatTextL

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

//

void CScreensaverCtrlMovingText::FormatTextL( TDes& aText, const TDesC& aFormat )

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::FormatTextL start") );

    TTime curTime;

    curTime.HomeTime();

    // Since screensaver is updated on the minute, make sure it displays

    // the time of the passing minute by adding a few seconds to the

    // time at the moment of the update.

    curTime += TTimeIntervalSeconds( 5 );

    TRAPD( err, curTime.FormatL( aText, aFormat ) );

    if ( err != KErrNone )

        {

        // If time can't be displayed then display an empty text

        aText = KNullDesC;

        }

    }

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

// CScreensaverCtrlMovingText::SetAmPmIndicatorPayload

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

//

void CScreensaverCtrlMovingText::SetAmPmIndicatorPayloadL()

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::SetAmPmIndicatorPayloadL start") );

    _LIT(KAmPmFormat, "%*A");

    TBuf<10> textAmPm;

    FormatTextL( textAmPm, KAmPmFormat );

    TIndicatorPayload payload;

    payload.iType = EPayloadTypeText;

    payload.iText.Zero();

    payload.iText.Append( textAmPm );

    Array().SetIndicatorPayload( ESsAmPmInd, payload );

    }

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

// CScreensaverCtrlMovingText::FormatTextFromResourceL

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

//

void CScreensaverCtrlMovingText::FormatTextFromResourceL( TDes &aText, TInt aResourceId )

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::FormatTextFromResourceL start") );

    TBuf<30> timeFormat;

    iCoeEnv->ReadResourceL( timeFormat, aResourceId );

    FormatTextL( aText, timeFormat );

    AknTextUtils::DisplayTextLanguageSpecificNumberConversion( aText );

    }

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

// CScreensaverCtrlMovingText::GetClockLayout

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

//

void CScreensaverCtrlMovingText::GetClockLayout( const TRect& aRect )

    {

    SCRLOGGER_WRITEF( _L("SCR:CScreensaverCtrlMovingText::GetClockLayout start") );

    TAknWindowComponentLayout clockarea =

        AknLayoutScalable_Avkon::aid_ps_clock_pane( 0 );

    TAknWindowLineLayout clockline = clockarea.LayoutLine();

    clockline.iC = iBgColor;

    iLayoutClock.LayoutRect( aRect, clockarea.LayoutLine() );

    TAknTextComponentLayout clocktext =

        AknLayoutScalable_Avkon::power_save_t2( 0 );

    clocktext.SetC( iTextColor );

    iLayoutClockText.LayoutText( aRect, clocktext.LayoutLine() );

    }

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

// CScreensaverCtrlMovingText::GetClockLayout

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

//