photosgallery/slideshow/view/src/shwslideshowblackoutcontrol.cpp
changeset 0 4e91876724a2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/view/src/shwslideshowblackoutcontrol.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,132 @@
+/*
+* Copyright (c) 2007-2008 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:    Control to create a black background for the slideshow
+*
+*/
+
+
+
+#include "shwslideshowblackoutcontrol.h"
+
+#include <uiacceltk/huienv.h> 
+#include <uiacceltk/huidisplay.h>
+#include <uiacceltk/huiImageVisual.h>
+#include <uiacceltk/huiAnchorLayout.h>
+
+#include "glxhuiutility.h"
+
+namespace
+	{
+	/**
+	 * Time to complete blackout
+	 */
+	const TInt KShwBlackoutDelay = 0;
+	/**
+	 * Opacity value - fully opaque
+	 */
+	const TInt KShwOpaque = 1;
+	/**
+	 * Opacity value - transparent
+	 */
+	const TInt KShwTransparent = 0;
+	const TInt KShwScreenSizeMultiplier = 3;
+	const TInt KShwOrigin = 0;
+	}
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+CShwBlackoutControl* CShwBlackoutControl::NewL( CHuiEnv& aEnv,
+	CHuiDisplay& aDisplay )
+    {
+    CShwBlackoutControl* self = new( ELeave )
+        CShwBlackoutControl( aEnv, aDisplay );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+//
+CShwBlackoutControl::CShwBlackoutControl( CHuiEnv& aEnv, CHuiDisplay& aDisplay )
+        : CHuiControl( aEnv ), iDisplay( aDisplay )
+    {    
+    BindDisplay( aDisplay );
+    }
+
+// -----------------------------------------------------------------------------
+// ConstructL
+// -----------------------------------------------------------------------------
+//
+void CShwBlackoutControl::ConstructL()
+    {
+    // Create the black background to fade out the rest of the screen
+	iBlackoutTexture = CHuiTexture::NewL();
+	CGlxHuiUtility::UploadFlatColourToTextureL( KRgbBlack, iBlackoutTexture );
+
+	iBlackoutLayout = CHuiAnchorLayout::AddNewL( *this );
+	iBlackoutLayout->SetClipping( EFalse );
+
+	iBlackoutImageVisual = CHuiImageVisual::AddNewL( *this, iBlackoutLayout );
+	iBlackoutImageVisual->SetImage( THuiImage( *iBlackoutTexture ) );
+	iBlackoutImageVisual->iOpacity.Set( KShwTransparent );
+
+	iBlackoutImageVisual->SetFlag( EHuiVisualFlagManualLayout );
+	TSize displaySize = iDisplay.Size();
+	iBlackoutImageVisual->SetSize( THuiRealSize(
+	    displaySize.iWidth * KShwScreenSizeMultiplier,
+		displaySize.iHeight * KShwScreenSizeMultiplier ));
+
+	iBlackoutImageVisual->SetPos( THuiRealPoint( KShwOrigin, KShwOrigin) );
+    }
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CShwBlackoutControl::~CShwBlackoutControl()
+    {   
+    delete iBlackoutTexture;
+    }
+	
+// -----------------------------------------------------------------------------
+// ActivateL
+// -----------------------------------------------------------------------------
+//
+void CShwBlackoutControl::ActivateL()
+    {
+    if ( !iActivated )
+        {        
+        iBlackoutImageVisual->iOpacity.Set( KShwOpaque, KShwBlackoutDelay );
+        iActivated = ETrue;
+        }
+    }
+    
+// -----------------------------------------------------------------------------
+// Deactivate
+// -----------------------------------------------------------------------------
+//
+void CShwBlackoutControl::Deactivate()
+    {
+    if ( iActivated )
+        {
+        iBlackoutImageVisual->iOpacity.Set( KShwTransparent,
+            KShwBlackoutDelay );
+        iActivated = EFalse;
+        }
+    }