author | Fionntina Carville <fionntinac@symbian.org> |
Mon, 15 Nov 2010 11:46:06 +0000 | |
branch | RCL_3 |
changeset 77 | 0a4059b7d4fe |
parent 0 | 4e91876724a2 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 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 "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: Scrollbar |
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* |
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*/ |
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#include "glxscrollbar.h" |
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#include <e32cmn.h> |
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#include <AknsConstants.h> |
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#include <alf/alfcontrol.h> |
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#include <alf/alflayout.h> |
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#include <alf/alfanchorlayout.h> |
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#include <alf/alfimagevisual.h> |
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#include <alf/alftexture.h> |
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#include <alf/alfimage.h> |
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#include <glxtexturemanager.h> |
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#include <glxpanic.h> |
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#include <glxlog.h> |
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#include "mglxscrollbarobserver.h" |
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#include "glxuiutility.h" |
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// S60 standard size for scrollbar |
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const TInt KWidth = 8; |
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const TInt KBackgroundLayoutIndex = 0; |
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const TInt KThumbLayoutIndex = 1; |
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const TInt KTopVisualIndex = 0; |
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const TInt KMiddleVisualIndex = 1; |
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const TInt KBottomVisualIndex = 2; |
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// ----------------------------------------------------------------------------- |
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// Two phase constructor |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CGlxScrollbar* CGlxScrollbar::NewLC(CAlfControl& aControl, CAlfLayout& aParentLayout) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::NewLC" ); |
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CGlxScrollbar* self = new (ELeave) CGlxScrollbar(); |
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CleanupStack::PushL( self ); |
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self->ConstructL( aControl, aParentLayout ); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// Two phase constructor |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CGlxScrollbar* CGlxScrollbar::NewL(CAlfControl& aControl, CAlfLayout& aParentLayout) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::NewL" ); |
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CGlxScrollbar* self = CGlxScrollbar::NewLC( aControl, aParentLayout ); |
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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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// Constructor |
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// ----------------------------------------------------------------------------- |
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// |
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CGlxScrollbar::CGlxScrollbar() |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::CGlxScrollbar" ); |
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} |
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// ----------------------------------------------------------------------------- |
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// Destructor |
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// ----------------------------------------------------------------------------- |
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// |
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CGlxScrollbar::~CGlxScrollbar() |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::~CGlxScrollbar" ); |
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iObservers.Close(); |
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} |
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// ----------------------------------------------------------------------------- |
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// Two phase constructor |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxScrollbar::ConstructL(CAlfControl& aControl, CAlfLayout& aParentLayout) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::ConstructL" ); |
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106 |
|
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iLayout = CAlfLayout::AddNewL( aControl, &aParentLayout ); |
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108 |
|
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// Create the background layout and child visuals |
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CAlfAnchorLayout* backgroundLayout = CAlfAnchorLayout::AddNewL( aControl, iLayout ); |
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111 |
|
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CAlfImageVisual::AddNewL( aControl, backgroundLayout ); |
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CAlfImageVisual::AddNewL( aControl, backgroundLayout ); |
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CAlfImageVisual::AddNewL( aControl, backgroundLayout ); |
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115 |
|
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// Create the thumb layout and child visuals |
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CAlfAnchorLayout* thumbLayout = CAlfAnchorLayout::AddNewL( aControl, iLayout ); |
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118 |
|
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CAlfImageVisual::AddNewL( aControl, thumbLayout ); |
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CAlfImageVisual::AddNewL( aControl, thumbLayout ); |
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CAlfImageVisual::AddNewL( aControl, thumbLayout ); |
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122 |
|
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// Create and set textures for the visuals |
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SetTexturesL(); |
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} |
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126 |
|
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// ----------------------------------------------------------------------------- |
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// Add an observer to observe scrollbar |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C void CGlxScrollbar::AddObserverL(MGlxScrollbarObserver* aObserver) |
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132 |
{ |
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GLX_LOG_INFO( "CGlxScrollbar::AddObserverL" ); |
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134 |
|
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__ASSERT_DEBUG( iObservers.Find( aObserver ) == KErrNotFound, |
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Panic( EGlxPanicIllegalArgument ) ); |
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137 |
|
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iObservers.AppendL( aObserver ); |
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} |
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140 |
|
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// ----------------------------------------------------------------------------- |
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// Remove an observer |
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// ----------------------------------------------------------------------------- |
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144 |
// |
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EXPORT_C void CGlxScrollbar::RemoveObserver(MGlxScrollbarObserver* aObserver) |
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146 |
{ |
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GLX_LOG_INFO( "CGlxScrollbar::RemoveObserver" ); |
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148 |
|
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TInt index = iObservers.Find( aObserver ); |
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150 |
|
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__ASSERT_DEBUG( index != KErrNotFound, Panic( EGlxPanicIllegalArgument ) ); |
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|
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if (index != KErrNotFound) |
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154 |
{ |
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iObservers.Remove( index ); |
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} |
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} |
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158 |
|
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// ----------------------------------------------------------------------------- |
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// Sets the visible length of the scrollbar |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C void CGlxScrollbar::SetVisibleLength(TUint aVisibleLength) |
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164 |
{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetVisibleLength" ); |
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166 |
|
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__ASSERT_DEBUG( aVisibleLength > 0, Panic( EGlxPanicIllegalArgument ) ); |
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168 |
|
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iVisibleLength = aVisibleLength; |
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|
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NotifyObservers(); |
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172 |
|
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Update( 0 ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Sets the full length of the scrollbar |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C void CGlxScrollbar::SetFullLength(TUint aFullLength, TUint aTransitionTime) |
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181 |
{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetFullLength" ); |
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183 |
|
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__ASSERT_DEBUG( aFullLength > 0, Panic( EGlxPanicIllegalArgument ) ); |
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|
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iFullLength = aFullLength; |
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|
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NotifyObservers(); |
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|
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Update( aTransitionTime ); |
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} |
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192 |
|
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// ----------------------------------------------------------------------------- |
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// Sets the position of the first visible row in the full length |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C void CGlxScrollbar::SetPosition(TUint aPosition, TUint aTransitionTime) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetPosition" ); |
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|
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__ASSERT_DEBUG( aPosition < iFullLength, Panic( EGlxPanicIllegalArgument ) ); |
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|
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iPosition = aPosition; |
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if ( iPosition > iFullLength - iVisibleLength ) |
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{ |
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iPosition = iFullLength - iVisibleLength; |
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} |
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208 |
|
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Update( aTransitionTime ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Set the textures for the visuals |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxScrollbar::SetTexturesL() |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetTexturesL" ); |
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|
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CGlxUiUtility* UiUtility = CGlxUiUtility::UtilityL(); |
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CleanupClosePushL( *UiUtility ); |
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|
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CGlxTextureManager& textureManager = UiUtility->GlxTextureManager(); |
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|
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SetBackgroundTexturesL( textureManager ); |
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SetThumbTexturesL( textureManager ); |
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|
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CleanupStack::PopAndDestroy( UiUtility ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Set the textures for the visuals in the background layout |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxScrollbar::SetBackgroundTexturesL(CGlxTextureManager& aTextureManager) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetBackgroundTexturesL" ); |
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CAlfAnchorLayout& backgroundLayout = |
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static_cast<CAlfAnchorLayout&>( iLayout->Visual( KBackgroundLayoutIndex ) ); |
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|
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CAlfTexture& bgTopTexture = |
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aTextureManager.CreateAvkonIconTextureL( KAknsIIDQsnCpScrollBgTop, |
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TSize( KWidth, KWidth ) ); |
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|
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CAlfImageVisual& bgTop = |
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static_cast<CAlfImageVisual&>( backgroundLayout.Visual( KTopVisualIndex ) ); |
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bgTop.SetImage( TAlfImage( bgTopTexture ) ); |
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|
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CAlfTexture& bgMiddleTexture = |
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aTextureManager.CreateAvkonIconTextureL( KAknsIIDQsnCpScrollBgMiddle, |
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TSize( KWidth, KWidth ) ); |
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|
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CAlfImageVisual& bgMiddle = |
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static_cast<CAlfImageVisual&>( backgroundLayout.Visual( KMiddleVisualIndex ) ); |
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bgMiddle.SetImage( TAlfImage( bgMiddleTexture ) ); |
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|
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CAlfTexture& bgBottomTexture = |
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aTextureManager.CreateAvkonIconTextureL( KAknsIIDQsnCpScrollBgBottom, |
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TSize( KWidth, KWidth ) ); |
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|
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CAlfImageVisual& bgBottom = |
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static_cast<CAlfImageVisual&>( backgroundLayout.Visual( KBottomVisualIndex ) ); |
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bgBottom.SetImage( TAlfImage( bgBottomTexture ) ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Set the textures for the visuals in the thumb layout |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxScrollbar::SetThumbTexturesL(CGlxTextureManager& aTextureManager) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetThumbTexturesL" ); |
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|
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CAlfAnchorLayout& thumbLayout = |
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static_cast<CAlfAnchorLayout&>( iLayout->Visual( KThumbLayoutIndex ) ); |
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|
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CAlfTexture& thumbTopTexture = |
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aTextureManager.CreateAvkonIconTextureL( KAknsIIDQsnCpScrollHandleTop, |
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TSize( KWidth, KWidth ) ); |
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|
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CAlfImageVisual& thumbTop = |
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static_cast<CAlfImageVisual&>( thumbLayout.Visual( KTopVisualIndex ) ); |
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thumbTop.SetImage( TAlfImage( thumbTopTexture ) ); |
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|
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CAlfTexture& thumbMiddleTexture = |
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aTextureManager.CreateAvkonIconTextureL( KAknsIIDQsnCpScrollHandleMiddle, |
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TSize( KWidth, KWidth ) ); |
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|
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CAlfImageVisual& thumbMiddle = |
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static_cast<CAlfImageVisual&>( thumbLayout.Visual( KMiddleVisualIndex ) ); |
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thumbMiddle.SetImage( TAlfImage( thumbMiddleTexture ) ); |
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|
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CAlfTexture& thumbBottomTexture = |
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aTextureManager.CreateAvkonIconTextureL( KAknsIIDQsnCpScrollHandleBottom, |
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TSize( KWidth, KWidth ) ); |
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|
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CAlfImageVisual& thumbBottom = |
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static_cast<CAlfImageVisual&>( thumbLayout.Visual( KBottomVisualIndex ) ); |
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thumbBottom.SetImage( TAlfImage( thumbBottomTexture ) ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// Set the background or thumb layout anchors |
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// ----------------------------------------------------------------------------- |
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// |
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void CGlxScrollbar::SetAnchors(CAlfAnchorLayout& aLayout) |
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{ |
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GLX_LOG_INFO( "CGlxScrollbar::SetAnchors" ); |
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|
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TInt width = aLayout.Size().Target().AsSize().iWidth; |
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|
312 |
|
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|
313 |
aLayout.SetAnchor(EAlfAnchorTopLeft, KTopVisualIndex, |
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|
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EAlfAnchorOriginLeft, EAlfAnchorOriginTop, |
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|
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EAlfAnchorMetricAbsolute, EAlfAnchorMetricAbsolute, |
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TAlfTimedPoint(0, 0)); |
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aLayout.SetAnchor(EAlfAnchorBottomRight, KTopVisualIndex, |
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EAlfAnchorOriginRight, EAlfAnchorOriginTop, |
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EAlfAnchorMetricAbsolute, EAlfAnchorMetricAbsolute, |
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TAlfTimedPoint(0, width)); |
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|
321 |
|
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aLayout.SetAnchor(EAlfAnchorTopLeft, KMiddleVisualIndex, |
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323 |
EAlfAnchorOriginLeft, EAlfAnchorOriginTop, |
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EAlfAnchorMetricAbsolute, EAlfAnchorMetricAbsolute, |
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TAlfTimedPoint(0, width)); |
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326 |
aLayout.SetAnchor(EAlfAnchorBottomRight, KMiddleVisualIndex, |
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327 |
EAlfAnchorOriginRight, EAlfAnchorOriginBottom, |
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EAlfAnchorMetricAbsolute, EAlfAnchorMetricAbsolute, |
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TAlfTimedPoint(0, -width)); |
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|
330 |
|
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331 |
aLayout.SetAnchor(EAlfAnchorTopLeft, KBottomVisualIndex, |
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332 |
EAlfAnchorOriginLeft, EAlfAnchorOriginBottom, |
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333 |
EAlfAnchorMetricAbsolute, EAlfAnchorMetricAbsolute, |
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TAlfTimedPoint(0, -width)); |
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aLayout.SetAnchor(EAlfAnchorBottomRight, KBottomVisualIndex, |
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336 |
EAlfAnchorOriginRight, EAlfAnchorOriginBottom, |
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EAlfAnchorMetricAbsolute, EAlfAnchorMetricAbsolute, |
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TAlfTimedPoint(0, 0)); |
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|
339 |
|
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aLayout.UpdateChildrenLayout(); |
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341 |
} |
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|
342 |
|
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// ----------------------------------------------------------------------------- |
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// Update the scrollbar |
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// ----------------------------------------------------------------------------- |
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346 |
// |
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void CGlxScrollbar::Update(TUint aTransitionTime) |
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348 |
{ |
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GLX_LOG_INFO( "CGlxScrollbar::Update" ); |
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350 |
|
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TSize layoutSize = iLayout->Size().Target().AsSize(); |
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|
352 |
|
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TSize thumbSize(layoutSize); |
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TPoint thumbPos( 0, 0 ); |
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if ( iFullLength > iVisibleLength ) |
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356 |
{ |
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thumbSize.iHeight = layoutSize.iHeight * iVisibleLength / iFullLength; |
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thumbPos.iY = layoutSize.iHeight * iPosition / iFullLength; |
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359 |
} |
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|
360 |
|
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361 |
CAlfAnchorLayout& backgroundLayout = |
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static_cast<CAlfAnchorLayout&>( iLayout->Visual( KBackgroundLayoutIndex ) ); |
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|
363 |
|
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backgroundLayout.SetPos( TPoint( 0, 0 ) ); |
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backgroundLayout.SetSize( layoutSize ); |
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SetAnchors( backgroundLayout ); |
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|
367 |
|
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368 |
CAlfAnchorLayout& thumbLayout = |
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Revision: 200949
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static_cast<CAlfAnchorLayout&>( iLayout->Visual( KThumbLayoutIndex ) ); |
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|
370 |
|
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371 |
thumbLayout.SetPos( thumbPos, aTransitionTime ); |
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Revision: 200949
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|
372 |
thumbLayout.SetSize( thumbSize, aTransitionTime ); |
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Revision: 200949
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|
373 |
SetAnchors( thumbLayout ); |
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|
374 |
} |
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Revision: 200949
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|
375 |
|
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Revision: 200949
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|
376 |
// ----------------------------------------------------------------------------- |
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Revision: 200949
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377 |
// Notify observers if the scrollbar is scrollable |
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Revision: 200949
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378 |
// ----------------------------------------------------------------------------- |
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379 |
// |
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Revision: 200949
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|
380 |
void CGlxScrollbar::NotifyObservers() |
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Revision: 200949
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|
381 |
{ |
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Revision: 200949
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|
382 |
GLX_LOG_INFO( "CGlxScrollbar::NotifyObservers" ); |
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Revision: 200949
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|
383 |
|
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Revision: 200949
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|
384 |
TBool scrollable(EFalse); |
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Revision: 200949
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|
385 |
if ( iFullLength > iVisibleLength ) |
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Revision: 200949
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|
386 |
{ |
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Revision: 200949
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|
387 |
scrollable = ETrue; |
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Revision: 200949
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|
388 |
} |
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Revision: 200949
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|
389 |
|
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Revision: 200949
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|
390 |
TInt count = iObservers.Count(); |
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Revision: 200949
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|
391 |
for ( TInt i = 0; i < count; ++i ) |
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Revision: 200949
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|
392 |
{ |
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Revision: 200949
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|
393 |
iObservers[i]->HandleScrollable(scrollable); |
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Revision: 200949
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diff
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|
394 |
} |
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Revision: 200949
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parents:
diff
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|
395 |
} |