--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/views/zoomview/src/glxzoomcontrol.cpp Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,861 @@
+/*
+* Copyright (c) 2008-2009 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 CGlxZoomControl
+*
+*/
+
+
+// INCLUDE FILES
+
+#include "glxzoomcontrol.h"
+
+// INCLUDES
+#include <data_caging_path_literals.hrh>
+#include <eikbtgpc.h> //For CEikButtonGroupContainer
+#include <ExifRead.h>
+
+//Alf Headers
+#include <alf/alfviewportlayout.h> // For CAlfViewPortLayout
+#include <alf/alfimagevisual.h> // For CAlfImageVisual
+#include <alf/alfcontrolgroup.h> // For CAlfControlGroup
+#include <alf/alfdisplay.h> // For CAlfDisplay
+#include <alf/alfroster.h> // For CAlfRoster
+#include <alf/alfutil.h> // For AlfUtil
+// Antariksh
+#include <mul/imulsliderwidget.h> // For Slider Widget
+#include <mul/mulevent.h> // For Slider events
+
+#include <gesturehelper.h>
+#include <e32math.h>
+
+using namespace GestureHelper;
+
+//Gallery Headers
+#include <glxuiutility.h>
+#include <glxattributecontext.h>
+#include <glxtracer.h> // For Tracer
+#include <glxlog.h> // For Log
+#include <glxtexturemanager.h> // For Creating Texture
+#include <glxuistd.h> // For Fetch Context Priority
+#include <mglxmedialist.h> // For MGlxMediaList
+#include <mglxuicommandhandler.h> // For MGlxUiCommandHandler
+
+#include "glxtv.h" // for CGlxTv
+// LOCAL CONSTANTS AND MACROS
+const TReal KGlxOpacityOpaque = 1.0;
+const TInt KGlxMaxExifSize = 0x10000;
+const TReal KGlxOpacityTransparent = 0.0;
+//zoom delay for animation while hdmi cable,
+//is connected and zoom is initiated
+const TInt KZoomDelay = 150000;
+//Zoom level for the animation , assuming the innitial level is 1.
+const TReal KGlxZoomLevel = 1.5;
+const TInt KGlxMinSmallImageZoomLevel =100;
+
+const TInt KGlxDecodingThreshold = 3000000; // pixels
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CGlxZoomControl::CGlxZoomControl
+// C++ default constructor can NOT contain any code, that might leave.
+// -----------------------------------------------------------------------------
+//
+CGlxZoomControl::CGlxZoomControl(MGlxUiCommandHandler& aCommandHandler,
+ MGlxMediaList& aMediaList,CEikButtonGroupContainer& aZoomBackKeys,
+ IMulSliderWidget& aSliderWidget, GestureHelper::CGestureHelper* aGestureHelper) :
+ iMediaList(aMediaList), iGestureHelper(aGestureHelper),
+ iZoomSliderWidget(aSliderWidget), iZoomBackKey(&aZoomBackKeys),
+ iCommandHandler(aCommandHandler)
+ {
+ TRACER("CGlxZoomControl::CGlxZoomControl");
+ }
+
+// -----------------------------------------------------------------------------
+// CGlxZoomControl::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::ConstructL()
+ {
+ TRACER("CGlxZoomControl::ConstructL()");
+ iAttributeContext = CGlxDefaultAttributeContext::NewL();
+ iAttributeContext->AddAttributeL(KGlxMediaGeneralDimensions);
+ iMediaList.AddContextL( iAttributeContext, KGlxFetchContextPriorityLow );
+ iUiUtility = CGlxUiUtility::UtilityL();
+ iEnv = iUiUtility->Env();
+ iDisplay = iUiUtility->Display();
+ iTextureMgr = &iUiUtility->GlxTextureManager();
+ iScreenSize = ScreenSize();
+
+ iDisplay->SetVisibleArea(TRect(TPoint(0,0),iScreenSize));
+ CAlfControl::ConstructL(*iEnv);
+
+ //Func creating black background and visual that has to zoomed
+ CreateZoomVisualL();
+
+ iControlGroup = &iEnv->NewControlGroupL(0x119);
+ iControlGroup->AppendL(this);
+
+ iDisplay->Roster().ShowL( *iControlGroup);
+
+ // Hide the Zoom at the construction
+ ShowZoom(EFalse);
+ iZoomActive = EFalse;
+ //To know if HDMi cable is connected.
+ iGlxTvOut = CGlxTv::NewL(*this);
+ iTimer = CPeriodic::NewL( CActive::EPriorityStandard );
+ }
+
+// -----------------------------------------------------------------------------
+// ScreenSize : gets the screensize, Note that , this is not stored in member variable as
+// Screen rect can change based on orientation
+// -----------------------------------------------------------------------------
+//
+TSize CGlxZoomControl::ScreenSize()
+ {
+ TRACER("CGlxZoomControl::ScreenSize()");
+ return AlfUtil::ScreenSize();
+ }
+
+// -----------------------------------------------------------------------------
+// ShowZoom
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::ShowZoom(TBool aShow)
+ {
+ TRACER("CGlxZoomControl::ShowZoom()");
+ if (aShow)
+ {
+ iViewPort->SetOpacity(KGlxOpacityOpaque);
+ iGestureHelper->AddObserver(this);
+ }
+ else
+ {
+ iViewPort->SetOpacity(KGlxOpacityTransparent);
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CreateZoomVisual
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::CreateZoomVisualL()
+ {
+ TRACER("CGlxZoomControl::CreateZoomVisualL()");
+
+ CAlfTexture *blackoutTexture = &(iTextureMgr->CreateFlatColourTextureL(KRgbBlack));
+ CleanupStack::PushL(blackoutTexture);
+
+ iViewPort = CAlfViewportLayout::AddNewL(*this);
+ //Create the Image visual ,which holds the texture,which is complete black in color
+ CAlfImageVisual *blackoutImageVisual = CAlfImageVisual::AddNewL(*this,iViewPort);
+ CleanupStack::PushL(blackoutImageVisual);
+
+ // Visual is larger than the screen to deal with control transformations that
+ // may show areas usually outside the normal screen coordinates
+ TInt16 blackImageSize =(iScreenSize.iWidth > iScreenSize.iHeight) ?iScreenSize.iWidth:iScreenSize.iHeight;
+ blackoutImageVisual->SetImage(TAlfImage(*blackoutTexture));
+ blackoutImageVisual->SetFlag(EAlfVisualFlagManualLayout);
+ blackoutImageVisual->SetSize(TAlfRealSize(blackImageSize, blackImageSize));
+ blackoutImageVisual->SetPos(TAlfRealPoint(0, 0));
+ CleanupStack::Pop(blackoutImageVisual);
+ CleanupStack::Pop(blackoutTexture);
+
+ // VisualLayoutUpdated
+ // Enable scrolling of the Viewport.
+ // The content area of a layout can be thought to be larger than the real visible size.
+ // Scrolling changes which portion of the layout’s content is actually visible at the moment.
+ iViewPort->SetFlag(EAlfVisualFlagLayoutUpdateNotification);
+ iViewPort->SetVirtualSize(TAlfRealSize(iScreenSize.iWidth,iScreenSize.iHeight), 0);
+ iViewPort->SetViewportSize(TAlfRealSize(iScreenSize.iWidth,iScreenSize.iHeight), 0);
+ iViewPort->SetViewportPos(TAlfRealPoint(0,0), 0);
+ iViewPort->SetClipping(EFalse);
+ iViewPort->SetOrigin( EAlfVisualHOriginLeft, EAlfVisualVOriginTop );
+
+ //Enable scrolling of the Viewport.
+ //The content area of a layout can be thought to be larger than the real visible size.
+ //Scrolling changes which portion of the layout’s content is actually visible at the moment.
+ iViewPort->EnableScrollingL();
+ iViewPort->EnableTransformationL();
+
+ iImageVisual = CAlfImageVisual::AddNewL(*this,iViewPort);
+ iImageVisual->SetScaleMode(CAlfImageVisual::EScaleFitInside);
+
+ iEventHandler = CGlxZoomPanEventHandler::NewL(*this);
+
+ }
+
+// -----------------------------------------------------------------------------
+// CGlxZoomControl::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C CGlxZoomControl* CGlxZoomControl::NewL(
+ MGlxUiCommandHandler& aCommandHandler,
+ MGlxMediaList& aMediaList,CEikButtonGroupContainer& aZoomKeys,
+ IMulSliderWidget& aSliderWidget, GestureHelper::CGestureHelper* aGestureHelper)
+ {
+ TRACER("CGlxZoomControl::NewL");
+ CGlxZoomControl* self = new (ELeave) CGlxZoomControl(aCommandHandler,
+ aMediaList,aZoomKeys,aSliderWidget,aGestureHelper);
+
+ CleanupStack::PushL(self);
+ self->ConstructL();
+
+ CleanupStack::Pop(self);
+ return self;
+ }
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CGlxZoomControl::~CGlxZoomControl()
+ {
+ TRACER("CGlxZoomControl::~CGlxZoomControl()");
+ if(iTimer->IsActive())
+ {
+ iTimer->Cancel();
+ }
+ delete iTimer;
+ if(iEventHandler)
+ {
+ delete iEventHandler;
+ iEventHandler = NULL ;
+ }
+
+ if(iViewPort)
+ {
+ iViewPort->RemoveAndDestroyAllD();
+ iViewPort = NULL;
+ }
+ iMediaList.RemoveContext(iAttributeContext);
+ delete iAttributeContext;
+ if(iImageTexture)
+ {
+ delete iImageTexture;
+ iImageTexture=NULL;
+ }
+ iDisplay->Roster().Hide(*iControlGroup);
+ if ( iControlGroup )
+ {
+ iControlGroup->Remove(this);
+ iEnv->DeleteControlGroup(0x119);
+ iControlGroup = NULL;
+ }
+ if ( iUiUtility )
+ {
+ iUiUtility->Close();
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// ActivateL:Activates the Zoom Control,set the image visual ,do the initial setup
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxZoomControl::ActivateL(TInt aInitialZoomRatio, TZoomStartMode aStartMode,
+ TInt aFocusIndex, TGlxMedia& aItem, TPoint* aZoomFocus)
+ {
+ TRACER("CGlxZoomControl::ActivateL()");
+ if ( !iZoomActive )
+ {
+ //This Varaiable updates that we are in zoom state now.
+ iZoomActive = ETrue;
+ //To Retrive the image details
+ TMPXAttribute thumbNailAttribute(0,0);
+ TGlxIdSpaceId idspace = iMediaList.IdSpaceId( aFocusIndex );
+ //Get the texture Created in fullscreen View.
+ iImageTexture = &(iTextureMgr->CreateNewTextureForMediaL(
+ ScreenSize(),aItem, idspace, this ));
+ iImageVisual->SetImage(*iImageTexture);
+
+ if(iGlxTvOut->IsConnected())
+ {
+ StartZoomAnimation();
+ }
+ else
+ {
+ ShowZoom(ETrue);
+ iZoomSliderWidget.AddEventHandler(*this);
+ iZoomSliderWidget.SetHandleKeyEvent(EFalse);
+ iZoomSliderModel = (IMulSliderModel*) iZoomSliderWidget.model();
+ // Get size, return value tells us if it was available
+ //We need this Value to calculate the size of the visual/Layout corresponding to the Zoom factor
+ TSize imageSize;
+ aItem.GetDimensions( imageSize );
+ TSize maxVirtualImageSize = imageSize;
+
+ if (KGlxDecodingThreshold < (imageSize.iWidth * imageSize.iHeight))
+ {
+ TReal areaRatio = TReal(imageSize.iWidth*imageSize.iHeight)/KGlxDecodingThreshold ;
+
+ TReal sideRatio;
+ Math::Sqrt(sideRatio, areaRatio);
+
+
+ maxVirtualImageSize.iHeight = imageSize.iHeight / sideRatio ;
+ maxVirtualImageSize.iWidth = imageSize.iWidth / sideRatio ;
+
+ }
+
+ TInt initialZoomRatio = GetIntialZoomLevel(maxVirtualImageSize);
+ iZoomSliderModel->SetMinRange(initialZoomRatio);
+
+ iEventHandler->SetZoomActivated(ETrue);
+ iEventHandler->ActivateZoom(initialZoomRatio,
+ maxVirtualImageSize,
+ aStartMode,
+ iZoomSliderModel->MinRange(),
+ iZoomSliderModel->MaxRange(),
+ maxVirtualImageSize,
+ aZoomFocus);
+
+ TRAP_IGNORE(iImageTexture =
+ &(iTextureMgr->CreateZoomedTextureL(aItem,thumbNailAttribute,idspace,this)));
+
+ //This is for handling the alaram interrupt events,that causes the phone to freeze.
+ CEikButtonGroupContainer* cba = CEikButtonGroupContainer::Current();
+ if (NULL != cba)
+ {
+ if (cba->IsVisible())
+ {
+ cba->ActivateL();
+ }
+ }
+ }
+ }
+}
+// ---------------------------------------------------------------------------
+// StartZoomAnimation
+// ---------------------------------------------------------------------------
+//
+void CGlxZoomControl::StartZoomAnimation()
+ {
+ TRACER("CGlxZoomControl::StartZoomAnimation()");
+ iZoomIn = ETrue;
+ //Set zoom visible but not enable the gesturehelper events
+ iViewPort->SetOpacity(KGlxOpacityOpaque);
+ TAlfTimedValue timedvalue;
+ //using KGlxOpacityOpaque for the value 1 , assuming the initial zoom level as 1.
+ timedvalue.SetValueNow(KGlxOpacityOpaque);
+ timedvalue.SetTarget(KGlxZoomLevel,KZoomDelay/1000);
+ iImageVisual->SetScale(timedvalue);
+ iTimer->Cancel();
+ iTimer->Start(KZoomDelay,KZoomDelay,TCallBack( TimeOut,this ));
+ }
+// ---------------------------------------------------------------------------
+// TimeOut
+// ---------------------------------------------------------------------------
+//
+TInt CGlxZoomControl::TimeOut(TAny* aSelf)
+ {
+ TRACER("CGlxZoomControl::TimeOut");
+ if(aSelf)
+ {
+ CGlxZoomControl* self = static_cast <CGlxZoomControl*> (aSelf);
+ self->ActivateFullscreen();
+ }
+ return KErrNone;
+ }
+// ---------------------------------------------------------------------------
+// ActivateZoomAnimation
+// ---------------------------------------------------------------------------
+//
+void CGlxZoomControl::ActivateFullscreen()
+ {
+ TRACER("CGlxZoomControl::ActivateFullscreen");
+ if(iZoomIn)
+ {
+ iZoomIn = EFalse;
+ TAlfTimedValue timedvalue;
+ timedvalue.SetValueNow(KGlxZoomLevel);
+ timedvalue.SetTarget(KGlxOpacityOpaque,KZoomDelay/1000);
+ iImageVisual->SetScale(timedvalue);
+ }
+ else
+ {
+ if(iTimer->IsActive())
+ {
+ iTimer->Cancel();
+ }
+ //once the animation is done come back to fullscreen.
+ HandleZoomOutL(KGlxZoomOutCommand);
+ }
+ }
+
+// -----------------------------------------------------------------------------------
+// Deactivate:Remove the screen furniture ,cancel the timers if any
+// ----------------------------------------------------------------------------------
+//
+EXPORT_C void CGlxZoomControl::Deactivate()
+ {
+ TRACER("CGlxZoomControl::Deactivate()");
+
+ if ( iZoomActive )
+ {
+ if(iTimer->IsActive())
+ {
+ iTimer->Cancel();
+ }
+ iZoomSliderWidget.ShowWidget( EFalse, 0 );
+ iZoomSliderWidget.RemoveEventHandler(*this);
+ iZoomBackKey->MakeVisible( EFalse );
+ iTextureMgr->RemoveZoomList();
+
+ iImageVisual->SetImage(*iImageTexture);
+ iEventHandler->DeactivateZoom();
+ CleanUpVisual();
+
+ iZoomActive = EFalse;
+ iEventHandler->SetZoomActivated(EFalse);
+ }
+ // Hide the Zoom View
+ ShowZoom(EFalse);
+ }
+
+// -----------------------------------------------------------------------------------
+// HandleZoomForegroundEventL:Zoom Foreground event handling function
+// ----------------------------------------------------------------------------------
+//
+EXPORT_C void CGlxZoomControl::HandleZoomForegroundEvent(TBool aForeground)
+ {
+ TRACER("CGlxZoomControl::HandleZoomForegroundEventL()");
+ if (!aForeground)
+ {
+ iEventHandler->CancelZoomPanTimer();
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CleanUpVisual:reset the values of the variables.
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::CleanUpVisual()
+ {
+ TRACER("CGlxZoomControl::CleanUpVisual() ");
+ }
+// -----------------------------------------------------------------------------
+// Activated
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool CGlxZoomControl::Activated()
+ {
+ TRACER("CGlxZoomControl::Activated");
+ return iZoomActive;
+ }
+
+// -----------------------------------------------------------------------------
+// OfferEventL
+// -----------------------------------------------------------------------------
+//
+TBool CGlxZoomControl::OfferEventL(const TAlfEvent &aEvent)
+ {
+ TRACER("CGlxZoomControl::OfferEventL()");
+
+ GLX_LOG_INFO1("OfferEventL 2: iZoomEnabled = %d ", iZoomActive );
+ // All the events related to the keys and pointers will be coming to this offerevent
+ return iEventHandler->HandleEventL(aEvent) ;
+ }
+
+
+// -----------------------------------------------------------------------------
+// offerEvent
+// -----------------------------------------------------------------------------
+//
+AlfEventStatus CGlxZoomControl::offerEvent( CAlfWidgetControl& /*aControl*/,
+ const TAlfEvent& aEvent)
+ {
+ TRACER("CGlxZoomControl::OfferEvent( CAlfWidgetControl& /*aControl*/)");
+ // All the events which are related to slider widget will be coming
+ // to this offerevent.
+ AlfEventStatus eventStatus = EEventNotHandled;
+
+ TBool consumed = iEventHandler->HandleEvent(aEvent);
+ if ( consumed )
+ {
+ eventStatus = EEventConsumed;
+ }
+
+ return eventStatus;
+ }
+
+
+// -----------------------------------------------------------------------------
+// TextureContentChangedL
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::TextureContentChangedL( TBool /*aHasContent*/ , CAlfTexture* aNewTexture)
+ {
+ TRACER("CGlxZoomControl::TextureContentChangedL ");
+ //if both the textures are null that means we do not have memory to
+ //decode and show anything. So try and check if the fullscreen texture
+ //is created by now if not then go to fullscreen view.
+
+ if(aNewTexture == NULL)
+ {
+ if(iImageTexture == NULL)
+ {
+ TSize TextureSize = ScreenSize();
+ TInt focus = iMediaList.FocusIndex();
+ TGlxMedia item = iMediaList.Item( focus );
+ TGlxIdSpaceId idspace = iMediaList.IdSpaceId( focus );
+
+ CAlfTexture* newTexture = NULL;
+ //Get the texture Created in fullscreen View.
+ TRAPD(errtexture, newTexture = &(iTextureMgr->CreateNewTextureForMediaL(
+ TextureSize,item, idspace, this )));
+
+ if(errtexture != KErrNone)
+ {
+ GLX_LOG_INFO( "CGlxTextureManagerImpl::HandleBitmapDecodedL::CreateNewTextureForMediaL Failed");
+ //Exit zoom and goto fullscreen
+ HandleZoomOutL(KGlxZoomOutCommand);
+ }
+ else
+ {
+ //show the fullscreen texture.
+ iImageTexture = newTexture;
+ iImageVisual->SetImage( *iImageTexture );
+ }
+ }
+ else
+ {
+ //show the existing first level decoded image texture in case second level
+ //decoding fails
+ iImageVisual->SetImage( *iImageTexture );
+ }
+ }
+ else
+ {
+ iImageTexture = aNewTexture;
+ iImageVisual->SetImage( *iImageTexture );
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// VisualLayoutUpdated:updates the co-ordinates when phone is tilted
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::VisualLayoutUpdated(CAlfVisual& aVisual)
+ {
+ TRACER("CGlxZoomControl::VisualLayoutUpdated ");
+ // Callback comes to this function when there is a resolution change
+ TRect rect;
+ rect = AlfUtil::ScreenSize();
+ if ( (rect.Width() != iScreenSize.iWidth) && ( rect.Height() != iScreenSize.iHeight) && (Activated()) )
+ {
+ //notify slider about Orientation Change
+ iZoomSliderWidget.ContainerLayout().Owner().VisualLayoutUpdated(aVisual);
+ //when the Phone is tilted,Height becomes the width and vice versa. So update with the new dimensions
+ iScreenSize.iWidth = rect.Width();
+ iScreenSize.iHeight = rect.Height();
+ iDisplay->SetVisibleArea(TRect(TPoint(0,0),iScreenSize));
+
+ //[TODO]: Use the Maths engine ro arrive at this figure (virtual and viewport sizes). else there might be problems in fringe conditions
+ iViewPort->SetVirtualSize(TAlfRealSize(iScreenSize.iWidth,iScreenSize.iHeight), 0);
+ iViewPort->SetViewportSize(TAlfRealSize(iScreenSize.iWidth,iScreenSize.iHeight), 0);
+
+ iEventHandler->OrientationChanged(rect);
+ }
+ }
+
+// ---------------------------------------------------------------------------
+// ShowUi
+// ---------------------------------------------------------------------------
+//
+void CGlxZoomControl::ShowUi(TBool aShow)
+ {
+ TRACER("CGlxZoomControl::ShowUi ");
+
+ if (aShow)
+ {
+ iEventHandler->SetZoomUiState(EUiOn);
+ }
+ else
+ {
+ iEventHandler->SetZoomUiState(EUiOff);
+ }
+
+ iZoomBackKey->MakeVisible( aShow );
+ iZoomSliderWidget.ShowWidget( aShow, 0 );
+ }
+
+// ---------------------------------------------------------------------------
+// From IAlfWidgetEventHandler..
+// ---------------------------------------------------------------------------
+//
+bool CGlxZoomControl::accept( CAlfWidgetControl& /*aControl*/,
+ const TAlfEvent& /*aEvent*/) const
+ {
+ TRACER("CGlxZoomControl::accept ");
+ return ETrue;
+ }
+
+// ---------------------------------------------------------------------------
+// From IAlfWidgetEventHandler..
+// ---------------------------------------------------------------------------
+//
+void CGlxZoomControl::setEventHandlerData(
+ const AlfWidgetEventHandlerInitData& /*aData*/)
+ {
+ TRACER("CGlxZoomControl::setEventHandlerData ");
+ }
+// ---------------------------------------------------------------------------
+// From IAlfWidgetEventHandler..
+// ---------------------------------------------------------------------------
+//
+
+AlfWidgetEventHandlerInitData* CGlxZoomControl::eventHandlerData()
+ {
+ TRACER("CGlxZoomControl::eventHandlerData ");
+ return NULL;
+ }
+// ---------------------------------------------------------------------------
+// From IAlfWidgetEventHandler.
+// ---------------------------------------------------------------------------
+//
+
+void CGlxZoomControl::setActiveStates( unsigned int /*aStates*/ )
+ {
+ TRACER("CGlxZoomControl::setActiveStates ");
+ }
+// ---------------------------------------------------------------------------
+// From IAlfWidgetEventHandler.
+// ---------------------------------------------------------------------------
+//
+
+IAlfInterfaceBase* CGlxZoomControl::makeInterface( const IfId& /*aType*/ )
+ {
+ TRACER("CGlxZoomControl::makeInterface Enter/Exit");
+ return NULL;
+ }
+//----------------------------------------------------------------------------------
+// eventHandlerType
+//----------------------------------------------------------------------------------
+//
+IAlfWidgetEventHandler::AlfEventHandlerType CGlxZoomControl::eventHandlerType()
+ {
+ TRACER("CGlxZoomControl::eventHandlerType Enter/Exit");
+ return IAlfWidgetEventHandler::ELogicalEventHandler;
+ }
+
+//----------------------------------------------------------------------------------
+// eventExecutionPhase
+//----------------------------------------------------------------------------------
+//
+IAlfWidgetEventHandler::AlfEventHandlerExecutionPhase CGlxZoomControl::eventExecutionPhase()
+ {
+ TRACER("CGlxZoomControl::eventExecutionPhase Enter/Exit");
+ return EBubblingPhaseEventHandler;
+ }
+
+//----------------------------------------------------------------------------------
+// GetOrientationL: to retreive orientation from the exif tags in the file
+//----------------------------------------------------------------------------------
+//
+TUint16 CGlxZoomControl::GetOrientationL(const TDesC& aFileName)
+ {
+ TRACER("CGlxZoomControl::GetOrientationL()");
+ //Get Exif Metadata and the orientation tag from the file first
+ RFs fs;
+ CleanupClosePushL(fs);
+ User::LeaveIfError(fs.Connect());
+
+ RFile file;
+ CleanupClosePushL(file);
+ User::LeaveIfError(file.Open(fs,
+ aFileName, EFileRead));
+
+ TInt size;
+ User::LeaveIfError(file.Size(size));
+ if ( KGlxMaxExifSize < size )
+ {
+ size = KGlxMaxExifSize;
+ }
+ TUint16 orientation = 0;
+ HBufC8* exifData = HBufC8::NewLC(size);
+ TPtr8 ptr(exifData->Des());
+ User::LeaveIfError(file.Read(ptr));
+ CExifRead* exifReader = NULL;
+ TRAPD(exifErr,exifReader = CExifRead::NewL(*exifData, CExifRead::ENoJpeg));
+ if(exifErr == KErrNone)
+ {
+ CleanupStack::PushL(exifReader);
+
+ TInt readErr = exifReader->GetOrientation(orientation);
+ if(readErr != KErrNone)
+ {
+ orientation = 0;
+ }
+ CleanupStack::PopAndDestroy(exifReader);
+ }
+ CleanupStack::PopAndDestroy(exifData);
+ //Close and pop file Session
+ CleanupStack::PopAndDestroy(&file);
+ CleanupStack::PopAndDestroy(&fs);
+ return orientation;
+
+ }
+
+// -----------------------------------------------------------------------------
+// UpdateViewPort
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::UpdateViewPort(TPoint& aViewPortTopLeft,
+ TInt aTransitionTime,
+ TSize *apViewPortDimension,
+ TInt aPrimarySliderRatio)
+ {
+ TRACER("void CGlxZoomControl::UpdateViewPort");
+
+ iViewPort->SetViewportPos(aViewPortTopLeft,aTransitionTime);
+
+ if (apViewPortDimension)
+ {
+ iViewPort->SetVirtualSize(*apViewPortDimension,0);
+ }
+
+ if(aPrimarySliderRatio >= 0)
+ {
+ iZoomSliderModel->SetPrimaryValue(aPrimarySliderRatio);
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// HandleShowUi
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::HandleShowUi( TBool aShow)
+ {
+ TRACER("void CGlxZoomControl::HandleShowUi");
+ ShowUi(aShow);
+ }
+
+
+
+// -----------------------------------------------------------------------------
+// HandleSetViewPort
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::HandleViewPortParametersChanged(TPoint& aViewPortTopLeft ,
+ TInt aTransitionTime ,
+ TSize *apViewPortDimension ,
+ TInt aPrimarySliderLevel )
+ {
+ TRACER("void CGlxZoomControl::HandleSetViewPort");
+ UpdateViewPort(aViewPortTopLeft, aTransitionTime, apViewPortDimension,
+ aPrimarySliderLevel);
+ }
+
+// -----------------------------------------------------------------------------
+// HandleZoomOut
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::HandleZoomOutL(TInt aCommandId)
+ {
+ TRACER("void CGlxZoomControl::HandleZoomOut");
+ iCommandHandler.HandleCommandL(aCommandId, this);
+ }
+
+
+// -----------------------------------------------------------------------------
+// HandlePointerEventsL
+// -----------------------------------------------------------------------------
+//
+TBool CGlxZoomControl::HandlePointerEventsL(const TAlfEvent &aEvent)
+ {
+ TRACER("void CGlxZoomControl::HandlePointerEventsL");
+
+ return iGestureHelper->OfferEventL(aEvent);
+
+ }
+
+// -----------------------------------------------------------------------------
+// HandleGestureL
+// -----------------------------------------------------------------------------
+//
+void CGlxZoomControl::HandleGestureL( const GestureHelper::MGestureEvent& aEvent )
+ {
+ TRACER("void CGlxZoomControl::HandleGestureL");
+
+ TGestureCode code = aEvent.Code(MGestureEvent::EAxisBoth);
+ GLX_LOG_INFO1("_PHOTOS_LOG_: void CGlxZoomControl::HandleGestureL Code : %d", code);
+
+ // Todo: This switch should go into the event handler.
+ switch (code)
+ {
+ case EGestureDrag:
+ iEventHandler->HandleDragEvent(aEvent);
+ break;
+ case EGestureTap:
+ iEventHandler->HandleSingleTap(aEvent);
+ break;
+ case EGesturePinch:
+ iEventHandler->HandlePinchEventL(aEvent);
+ break;
+ case EGestureDoubleTap:
+ iEventHandler->HandleDoubleTap(aEvent);
+ break;
+ case EGestureReleased:
+ iEventHandler->HandleGestureReleased(aEvent);
+ break;
+ default :
+ break;
+ }
+ iEventHandler->SetPreviousEventCode(code);
+ }
+
+TInt CGlxZoomControl::GetIntialZoomLevel(TSize& aSize )
+ {
+ TRACER("CGlxZoomControl::IntialZoomLevel");
+
+ TRect rect = AlfUtil::ScreenSize();
+ TUint8 initialZoomLevel;
+
+ if( rect.Width()>= aSize.iWidth && rect.Height() >= aSize.iHeight)
+ {
+ //if Both the Width and Height are lesser than the screen size,the initial Zoom Level will be 100
+ initialZoomLevel = KGlxMinSmallImageZoomLevel;
+ }
+ else
+ {
+ //Calculate (Display Area Width) /Image Width * 100
+ //Calculate (Display Area Height) /Image Height * 100
+ //Choose the Minimum Of the above.
+ TReal32 imageWidthRatio = ((TReal32) rect.Width()/ aSize.iWidth )*100.0F;
+ TReal32 imageHeightRatio = ((TReal32)rect.Height()/ aSize.iHeight )*100.0F;
+ initialZoomLevel = Min(imageWidthRatio,imageHeightRatio);
+ }
+ return initialZoomLevel;
+ }
+// -----------------------------------------------------------------------------
+// HandleTvStatusChangedL
+// -----------------------------------------------------------------------------
+void CGlxZoomControl::HandleTvStatusChangedL( TTvChangeType aChangeType )
+ {
+ TRACER("CGlxZoomControl::HandleTvStatusChangedL()");
+ if ( aChangeType == ETvConnectionChanged )
+ {
+ if ( iGlxTvOut->IsConnected() )
+ {
+ //go to fullscreen.
+ HandleZoomOutL(KGlxZoomOutCommand);
+ }
+ }
+ }
+
+
+// End of File