--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/examples/carouselwidgetexample/renderer/src/carouselwidget.cpp Tue Sep 14 20:58:58 2010 +0300
@@ -0,0 +1,443 @@
+/*
+ * Copyright (c) 2010 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: Carousel widget for Symbian Homescreen
+ *
+ */
+
+#include <ecom/implementationproxy.h>
+#include <aknphysics.h>
+#include <gulicon.h>
+#include <AknIconUtils.h>
+#include <AknsDrawUtils.h>
+#include <xnexteventhandler.h>
+#include "carouselwidget.h"
+
+const TSize KIconSize(70,70);
+const TInt KItemPadding( 6 );
+
+_LIT( KLaunchByIndex, "LaunchByIndex(");
+
+template< class PtrT > inline PtrT* UnpackPtr(
+ const TDesC8& aBuf )
+ {
+ TAny* result( NULL );
+
+ if ( aBuf.Size() == sizeof( TAny* ) )
+ {
+ // Effectively writes aBuf contents to result
+ TPckg< TAny* >( result ).Copy( aBuf );
+ }
+
+ return static_cast< PtrT* >( result );
+ }
+// ============================ MEMBER FUNCTIONS ===============================
+CCarouselItem::CCarouselItem( CFbsBitmap* aBitmap, CFbsBitmap* aMask)
+ :iBitmap( aBitmap ), iMask( aMask )
+ {
+ }
+
+CCarouselItem::~CCarouselItem()
+ {
+ delete iBitmap;
+ delete iMask;
+ delete iText;
+ }
+
+void CCarouselItem::SetTextL( const TDesC& aText )
+ {
+ delete iText;
+ iText = NULL;
+ iText = aText.AllocL();
+ }
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// Symbian static 1st phase constructor
+// -----------------------------------------------------------------------------
+//
+CCarouselWidget* CCarouselWidget::NewL()
+ {
+ CCarouselWidget* self = new( ELeave ) CCarouselWidget();
+ CleanupStack::PushL( self );
+ self->ConstructL();
+ CleanupStack::Pop( self );
+ return self;
+ }
+
+// -----------------------------------------------------------------------------
+// C++ destructor
+// -----------------------------------------------------------------------------
+//
+CCarouselWidget::~CCarouselWidget()
+ {
+ delete iPhysics;
+ iStripeItems.ResetAndDestroy();
+ //delete iCover;
+ }
+
+// -----------------------------------------------------------------------------
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::ConstructL()
+ {
+
+ }
+
+// -----------------------------------------------------------------------------
+// Handles key events.
+// -----------------------------------------------------------------------------
+//
+TKeyResponse CCarouselWidget::OfferKeyEventL( const TKeyEvent& /*aKeyEvent*/,
+ TEventCode /*aType*/ )
+ {
+ return EKeyWasConsumed;
+ }
+
+// -----------------------------------------------------------------------------
+// Set window for this control
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::SetContainerWindowL( const CCoeControl &aContainer )
+ {
+ CCoeControl::SetContainerWindowL( aContainer );
+ }
+
+// -----------------------------------------------------------------------------
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::HandlePointerEventL( const TPointerEvent& aPointerEvent )
+ {
+ if( !iPhysics )
+ {
+ return;
+ }
+ TPoint stylusPos( aPointerEvent.iPosition );
+ switch( aPointerEvent.iType )
+ {
+ case TPointerEvent::EButton1Down:
+ {
+ iPhysics->StopPhysics();
+ iPhysics->ResetFriction();
+ iStartPosition = stylusPos;
+ iStartTime.HomeTime();
+ iStylusPosition = stylusPos;
+ iDrawHighlight = ETrue;
+ }
+ break;
+
+ case TPointerEvent::EButton1Up:
+ {
+ iDrawHighlight = EFalse;
+ TInt distance = iStartPosition.iX - stylusPos.iX;
+ if( Abs(distance) <= iPhysics->DragThreshold() )
+ {
+ LaunchItemL( stylusPos );
+ }
+ else
+ {
+ TPoint drag( distance, 0 );
+ iPhysics->StartPhysics( drag, iStartTime );
+ } }
+ break;
+ case TPointerEvent::EDrag:
+ case TPointerEvent::EMove:
+ {
+ TPoint dragTh( iStartPosition - stylusPos );
+ if( Abs(dragTh.iX) > iPhysics->DragThreshold() ||
+ Abs(dragTh.iY) > iPhysics->DragThreshold())
+ {
+ iDrawHighlight = EFalse;
+ }
+ TInt deltaX( iStylusPosition.iX - stylusPos.iX );
+ iStylusPosition = stylusPos;
+ TPoint deltaPoint( deltaX, 0 );
+ iPhysics->RegisterPanningPosition( deltaPoint );
+ }
+ break;
+ default:
+ break;
+ }
+
+ CCoeControl::HandlePointerEventL( aPointerEvent );
+ }
+
+// -----------------------------------------------------------------------------
+// Returns the number of component controls
+// -----------------------------------------------------------------------------
+//
+TInt CCarouselWidget::CountComponentControls() const
+ {
+ return 0;
+ }
+
+// -----------------------------------------------------------------------------
+// Returns the specified control
+// -----------------------------------------------------------------------------
+//
+CCoeControl* CCarouselWidget::ComponentControl( TInt /*aIndex*/ ) const
+ {
+ return NULL;
+ }
+
+// -----------------------------------------------------------------------------
+// Skin change notification.
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::SkinChanged()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CCarouselWidget::EnterPowerSaveModeL
+//
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::EnterPowerSaveModeL()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CCarouselWidget::ExitPowerSaveModeL
+//
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::ExitPowerSaveModeL()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// Called if focus changes
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::FocusChanged( TDrawNow /*aDrawNow*/ )
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// Called if position or size changes
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::SizeChanged()
+ {
+ iViewPort = Rect();
+ TRAP_IGNORE( InitPhysicEngineL() );
+ DrawNow();
+ }
+
+// -----------------------------------------------------------------------------
+// Sets the external event handler interface.
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::SetEventHandler( MXnExtEventHandler* aEventHandler )
+ {
+ iEventHandler = aEventHandler;
+ }
+
+// -----------------------------------------------------------------------------
+// Data stream from the publisher
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::SetDataL( const TDesC8& aData, const TDesC& aType, TInt aIndex )
+ {
+ /// Unpack the data stream, works because publisher is in same process.
+ CGulIcon* icon( UnpackPtr<CGulIcon>( aData ) );
+ CleanupStack::PushL( icon );
+ AknIconUtils::SetSize( icon->Bitmap(), KIconSize);
+
+ CCarouselItem* item = new ( ELeave ) CCarouselItem(/* *iEditor,*/ icon->Bitmap(), icon->Mask() );
+ CleanupStack::PopAndDestroy( icon );
+
+ if( aType == _L("Appstripe/widget"))
+ {
+ if( iStripeItems.Count() <= aIndex )
+ {
+ iStripeItems.AppendL( item );
+ InitPhysicEngineL();
+ }
+ else
+ {
+ CCarouselItem* citem = iStripeItems[ aIndex ];
+ delete citem;
+ iStripeItems.Remove( aIndex );
+ iStripeItems.Insert( item, aIndex );
+ }
+ DrawNow();
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// Draws the carousel component
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::Draw( const TRect& /*aRect*/ ) const
+ {
+ CWindowGc& gc( SystemGc() );
+ gc.SetClippingRect( iViewPort );
+ TRect bitmapRect( TPoint(0,0), KIconSize );
+ TPoint point( iViewPort.iTl );
+ point.iX -= iViewPosition.iX;
+
+ TInt count = iStripeItems.Count();
+ for( TInt i = 0; i < count; i++ )
+ {
+ CFbsBitmap* bitmap = iStripeItems[i]->iBitmap;
+ CFbsBitmap* mask = iStripeItems[i]->iMask;
+
+ TRect drawRect( point, KIconSize );
+ if( iDrawHighlight && drawRect.Contains( iStylusPosition ))
+ {
+ TRect innerRect( drawRect );
+ innerRect.Shrink( 5, 5 );
+
+ MAknsSkinInstance* skin( AknsUtils::SkinInstance() );
+ AknsDrawUtils::DrawFrame( skin, gc, drawRect, innerRect,
+ KAknsIIDQsnFrHomePressed, KAknsIIDDefault );
+ }
+ if( iViewPort.Contains( drawRect.iBr )||
+ iViewPort.Contains( drawRect.iTl ))
+ {
+ gc.BitBltMasked( point, bitmap, bitmapRect, mask, EFalse);
+ }
+ point.iX += KIconSize.iWidth + KItemPadding;
+ }
+ }
+
+// ---------------------------------------------------------------------------
+// ViewPositionChanged
+// ---------------------------------------------------------------------------
+//
+void CCarouselWidget::ViewPositionChanged(
+ const TPoint& aNewPosition, TBool aDrawNow, TUint /*aFlags*/ )
+ {
+ iCurrentPosition = aNewPosition;
+ iViewPosition.iX = aNewPosition.iX - iViewPort.Width()/2;
+ if( aDrawNow )
+ {
+ DrawNow( iViewPort );
+ }
+ }
+
+// ---------------------------------------------------------------------------
+// PhysicEmulationEnded
+// ---------------------------------------------------------------------------
+//
+void CCarouselWidget::PhysicEmulationEnded()
+ {
+ }
+
+// ---------------------------------------------------------------------------
+// ViewPosition
+// ---------------------------------------------------------------------------
+//
+TPoint CCarouselWidget::ViewPosition() const
+ {
+ return iCurrentPosition;
+ }
+
+// ---------------------------------------------------------------------------
+// InitPhysicEngineL
+// ---------------------------------------------------------------------------
+//
+void CCarouselWidget::InitPhysicEngineL()
+ {
+ // Init physic engine
+ if ( !iPhysics && CAknPhysics::FeatureEnabled() )
+ {
+ iPhysics = CAknPhysics::NewL( *this, this );
+ }
+ if( !iPhysics )
+ {
+ return;
+ }
+ TSize viewPortSize = iViewPort.Size();
+ TInt totalWidth( iStripeItems.Count() * (KIconSize.iWidth + KItemPadding ));
+ TSize totalSize( totalWidth, viewPortSize.iHeight );
+ iPhysics->InitPhysicsL( totalSize, viewPortSize, ETrue );
+ iCurrentPosition = TPoint( viewPortSize.iWidth / 2, viewPortSize.iHeight / 2 );
+ }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCarouselWidget::ItemIndex( TPoint& aPoint )
+ {
+ TPoint itemStartPoint( iViewPort.iTl );
+ itemStartPoint.iX -= iViewPosition.iX;
+
+ TRect dropRect( itemStartPoint, KIconSize );
+ dropRect.Resize( KItemPadding, 0 );
+ TInt index( 0 );
+ do
+ {
+ if( dropRect.Contains( aPoint ))
+ {
+ return index;
+ }
+ dropRect.Move( KIconSize.iWidth+KItemPadding, 0);
+ index++;
+ }
+ while( index < iStripeItems.Count() );
+ return KErrNotFound;
+ }
+
+// -----------------------------------------------------------------------------
+// Launches the item, which is in aPosition
+// -----------------------------------------------------------------------------
+//
+void CCarouselWidget::LaunchItemL( TPoint& aPosition )
+ {
+ TInt index = ItemIndex( aPosition );
+ // carousel plugin expects indexes to start from 1
+ index++;
+ TInt len( KLaunchByIndex().Length()+3 );
+ TBuf<17> event;
+ event.Append( KLaunchByIndex );
+ event.AppendNum( index );
+ event.Append( _L(")"));
+ iEventHandler->HandleEventL( event, _L8("Appstripe"));
+ }
+
+// -----------------------------------------------------------------------------
+// C++ default constructor
+// -----------------------------------------------------------------------------
+//
+CCarouselWidget::CCarouselWidget()
+ {
+ }
+
+// ============================ PUBLIC FUNCTIONS ===============================
+const TImplementationProxy KImplementationTable[] =
+ {
+#ifdef __EABI__
+ IMPLEMENTATION_PROXY_ENTRY( 0xEabba433, CCarouselWidget::NewL )
+#else
+ { { 0xEabba433 }, CCarouselWidget::NewL }
+#endif
+ };
+
+// -----------------------------------------------------------------------------
+// Returns the list of implementations provided by the plugin
+// -----------------------------------------------------------------------------
+//
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(
+ TInt& aTableCount )
+ {
+ aTableCount = sizeof( KImplementationTable ) / sizeof( TImplementationProxy );
+ return KImplementationTable;
+ }
+