webengine/osswebengine/WebKit/s60/webview/WebPageZoomHandler.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 27 Aug 2009 07:44:59 +0300
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child 68 92a765b5b3e7
permissions -rw-r--r--
Revision: 200929 Kit: 200935
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/*
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:   
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*
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*/
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// INCLUDE FILES
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#include <../bidi.h>
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#include <aknutils.h>
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#include "WebPageZoomHandler.h"
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#include "SettingsContainer.h"
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#include <AknVolumePopup.h>
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#include "WebView.h"
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#include "BrCtl.h"
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#include "WebFrameView.h"
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#include "WebFrame.h"
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const int KZoomSliderDefaultValue = 50;
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const int KZoomSliderMinRange  = 0;
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const int KZoomSliderStepSize  = 10;
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const int KZoomSliderTimeout   = 5;
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const int KBitmapUpdateTimeout = 100*1000;
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int bitmapUpdateTimerCb( void* ptr );
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// WebPageZoomHandler::NewL
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// The two-phase Symbian constructor
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// -----------------------------------------------------------------------------
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//
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WebPageZoomHandler* WebPageZoomHandler::NewL(WebView& webView)
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{
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    WebPageZoomHandler* self = new (ELeave) WebPageZoomHandler( webView );
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    CleanupStack::PushL(self);
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    self->constructL();
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    CleanupStack::Pop(); //self
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    return self;
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}
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// -----------------------------------------------------------------------------
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// WebPageZoomHandler::WebPointerEventHandler
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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WebPageZoomHandler::WebPageZoomHandler(WebView& webView)
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: m_webView(&webView), m_zoomSlider(0)
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{
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}
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// -----------------------------------------------------------------------------
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// WebPageZoomHandler::constructL
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// The constructor that can contain code that might leave.
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// -----------------------------------------------------------------------------
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//
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void WebPageZoomHandler::constructL()
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{
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    m_bitmapUpdateTimer = CPeriodic::NewL(CActive::EPriorityHigh);
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    m_stepSize = KZoomSliderStepSize;
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}
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// -----------------------------------------------------------------------------
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// Destructor
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// -----------------------------------------------------------------------------
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WebPageZoomHandler::~WebPageZoomHandler()
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{
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    if ( m_bitmapUpdateTimer && m_bitmapUpdateTimer->IsActive() )
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        {
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        m_bitmapUpdateTimer->Cancel();
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        }
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    delete m_bitmapUpdateTimer;
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    if ( m_zoomSlider )
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        {
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        if( m_zoomSlider->IsVisible()) 
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            {
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            m_zoomSlider->CloseVolumePopup();
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            }
0
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        delete m_zoomSlider;
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        }
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}
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// -----------------------------------------------------------------------------
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void WebPageZoomHandler::showZoomSliderL()
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{
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    if ( AknLayoutUtils::PenEnabled() )
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        {
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        if (m_zoomSlider) {
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            delete m_zoomSlider;
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            m_zoomSlider = NULL;
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            }
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        m_zoomSlider = CAknVolumePopup::NewL( NULL, ETrue);
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        m_zoomSlider->SetValueType( EAknSliderValuePercentage );
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        m_zoomSlider->SetStepSize( m_stepSize );
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        m_zoomSlider->SetAdjustmentIndicatorDisplay( ETrue );
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        m_zoomSlider->SetTimeOutAsSecond( KZoomSliderTimeout );
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        m_zoomSlider->ClosePopupWhenTappedOutside( EFalse );
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        m_zoomSlider->SetRange( m_webView->minZoomLevel(), m_webView->maxZoomLevel());
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        m_zoomSlider->SetValue( m_webView->scalingFactor());
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        m_zoomSlider->SetObserver(this);
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        TRect currRect = m_webView->brCtl()->Rect();
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        TPoint newPos ( currRect.iTl.iX + ( currRect.iBr.iX - m_zoomSlider->Size().iWidth ) , currRect.iTl.iY + 30 );
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        m_zoomSlider->SetPosition( newPos );
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        m_zoomSlider->ShowVolumePopupL();
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        }
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}
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void WebPageZoomHandler::hideZoomSliderL()
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{
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    if ( AknLayoutUtils::PenEnabled() )
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        {
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        if (m_zoomSlider) 
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            {
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            if( m_zoomSlider->IsVisible())
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                m_zoomSlider->CloseVolumePopup();
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            delete m_zoomSlider;
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            m_zoomSlider = NULL;
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            m_webView->notifyZoomSliderModeChangeL(false);
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            }
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        }
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}
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void WebPageZoomHandler::setZoomLevel(int zoomLevel)
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{
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    m_webView->setBitmapZoomLevel(zoomLevel);
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}
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void WebPageZoomHandler::HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType)
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{
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    if ( AknLayoutUtils::PenEnabled() )
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        {
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        TBool sliderVisibility = false;
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        TInt zoomValue = 0;
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        if(m_zoomSlider == aControl) {
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            if (m_bitmapUpdateTimer && m_bitmapUpdateTimer->IsActive())
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                m_bitmapUpdateTimer->Cancel();
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            sliderVisibility = m_zoomSlider->IsVisible();
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            switch(aEventType) {
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                case EEventStateChanged:
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            	case EEventRequestFocus:
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                    if(sliderVisibility) {
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                        zoomValue = m_zoomSlider->Value();
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                        if(zoomValue >= m_webView->minZoomLevel() && zoomValue <= m_webView->maxZoomLevel()){
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                            setZoomLevel(zoomValue);
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                        }
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                        else if( zoomValue < m_webView->minZoomLevel()) {
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                              m_zoomSlider->SetValue( m_webView->scalingFactor() );
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                        }
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                    }
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                    break;
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                default:
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                    break;
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            }
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            if(sliderVisibility && m_bitmapUpdateTimer)
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                m_bitmapUpdateTimer->Start( KBitmapUpdateTimeout,KBitmapUpdateTimeout,TCallBack(&bitmapUpdateTimerCb,this));
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            if( !sliderVisibility && EEventStateChanged == aEventType ) {
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                m_webView->notifyZoomSliderModeChangeL(false);
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            }
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        }
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    } 
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}
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int WebPageZoomHandler::stepSize()
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{
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    return m_stepSize;
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}
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   198
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WebView* WebPageZoomHandler::view( void )
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{
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    return m_webView;
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}
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bool WebPageZoomHandler::isActive( void )
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{
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    return ( m_zoomSlider && m_zoomSlider->IsVisible())?true:false;
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}
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void WebPageZoomHandler::updateBitmap(void)
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{
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    m_bitmapUpdateTimer->Cancel();
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    m_webView->restoreZoomLevel(m_webView->scalingFactor());
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}
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int bitmapUpdateTimerCb(void* ptr)
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   215
{
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    ((WebPageZoomHandler*)ptr)->updateBitmap();
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    return 0;
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}
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//  End of File