| author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
| Tue, 14 Sep 2010 20:58:58 +0300 | |
| branch | RCL_3 |
| changeset 88 | 3321d3e205b6 |
| parent 83 | 5456b4e8b3a8 |
| child 102 | ba63c83f4716 |
| permissions | -rw-r--r-- |
| 83 | 1 |
/* |
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* Copyright (c) 2002-2006 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: Text scrolling functionality. |
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* |
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*/ |
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// INCLUDE FILES |
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#include "xnnewstickercontrol.h" |
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#include "xnnewstickeradapter.h" |
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#include "xnproperty.h" |
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// CONSTANTS |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::CXnNewstickerControl |
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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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CXnNewstickerControl::CXnNewstickerControl( CXnNewstickerAdapter* aAdapter ) : |
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iCurrentTitleIndex( KErrNotFound ), |
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iAdapter( aAdapter ), |
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iScrollLooping( ETrue ) |
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{
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::ConstructL |
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// Symbian 2nd phase constructor can leave. |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::ConstructL() |
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{
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::NewL |
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// Two-phased constructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CXnNewstickerControl* CXnNewstickerControl::NewL( CXnNewstickerAdapter* aAdapter ) |
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{
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CXnNewstickerControl* self = new(ELeave)CXnNewstickerControl( aAdapter ); |
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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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// CXnNewstickerControl::~CXnNewstickerControl() |
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// Destructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CXnNewstickerControl::~CXnNewstickerControl() |
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{
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iTitleTexts.ResetAndDestroy(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::SetScrollLooping() |
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// |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::SetScrollLooping( TBool aLooping ) |
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{
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iScrollLooping = aLooping; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::AppendTitleL |
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// (other items were commented in a header). |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::AppendTitleL( const TDesC& aTitle ) |
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{
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HBufC* title = aTitle.AllocLC(); |
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iTitleTexts.AppendL( title ); |
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CleanupStack::Pop( title ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::InsertTitleL |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::InsertTitleL( const TDesC& aTitle, TInt aIndex ) |
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{
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if( aIndex >= 0 && aIndex < iTitleTexts.Count() ) |
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{
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HBufC* title = aTitle.AllocLC(); |
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iTitleTexts.InsertL( title, aIndex ); |
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CleanupStack::Pop( title ); |
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} |
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else |
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{
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AppendTitleL( aTitle ); |
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} |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::UpdateTitleL |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::UpdateTitleL( const TDesC& aTitle, TInt aIndex ) |
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{
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if( aIndex >= 0 && aIndex < iTitleTexts.Count() ) |
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{
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HBufC* oldTitle = iTitleTexts[ aIndex ]; |
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iTitleTexts.Remove( aIndex ); |
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delete oldTitle; |
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oldTitle = NULL; |
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HBufC* title = aTitle.AllocLC(); |
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iTitleTexts.InsertL( title, aIndex ); |
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CleanupStack::Pop( title ); |
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} |
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else |
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{
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AppendTitleL( aTitle ); |
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} |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::DeleteTitle |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::DeleteTitleL( TInt aIndex ) |
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{
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TInt count = iTitleTexts.Count(); |
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if( aIndex >= 0 && aIndex < count ) |
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{
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// If the last item will be deleted |
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if(count == 1) |
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{
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iAdapter->Stop(); |
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iCurrentTitleIndex = KErrNotFound; |
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} |
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UpdateTitleL( KNullDesC, aIndex ); |
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88
3321d3e205b6
Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
83
diff
changeset
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3321d3e205b6
Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
83
diff
changeset
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if( aIndex == iCurrentTitleIndex ) |
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3321d3e205b6
Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
83
diff
changeset
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{
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3321d3e205b6
Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
83
diff
changeset
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iCurrentTitleIndex = GetNextTitleWithContent( aIndex ); |
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3321d3e205b6
Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
83
diff
changeset
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} |
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} |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::CurrentTitleIndex |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CXnNewstickerControl::CurrentTitleIndex() const |
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{
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return iCurrentTitleIndex; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::Title |
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// ----------------------------------------------------------------------------- |
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// |
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const TDesC& CXnNewstickerControl::Title( TInt aIndex ) const |
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{
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if( aIndex >= 0 && aIndex < iTitleTexts.Count() ) |
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{
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return *iTitleTexts[ aIndex ]; |
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} |
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return KNullDesC; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::LastIndexWithContent |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CXnNewstickerControl::LastIndexWithContent() const |
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{
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for( TInt i(iTitleTexts.Count()-1); i>=0; --i ) |
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{
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const TDesC& title( *iTitleTexts[i] ); |
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if( title != KNullDesC() ) |
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{
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return i; |
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} |
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} |
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return KErrNotFound; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::ClearTitles |
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// ----------------------------------------------------------------------------- |
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// |
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void CXnNewstickerControl::ClearTitles() |
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{
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iAdapter->Stop(); |
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iCurrentTitleIndex = KErrNotFound; |
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// Don't delete just clear the contents |
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for( TInt i=0; i < iTitleTexts.Count(); i++ ) |
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{
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TRAP_IGNORE( UpdateTitleL( KNullDesC, i ) ); |
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} |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::TitleCount |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CXnNewstickerControl::TitleCount() const |
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{
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return iTitleTexts.Count(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::CurrentTitle |
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// (other items were commented in a header). |
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// ----------------------------------------------------------------------------- |
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// |
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const TDesC& CXnNewstickerControl::CurrentTitle() const |
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{
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return Title( iCurrentTitleIndex ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::GetNextTitleWithContent |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CXnNewstickerControl::GetNextTitleWithContent( TInt aStartSearch, |
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TBool aBackwards ) const |
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{
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TInt dir = 1; |
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if( aBackwards ) |
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{
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dir = -1; |
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} |
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for( TInt i = aStartSearch; i < iTitleTexts.Count() && i >= 0; i += dir ) |
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{
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const TDesC& title( *iTitleTexts[i] ); |
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if( title != KNullDesC() ) |
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{
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return i; |
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} |
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} |
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return KErrNotFound; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::SelectTitle |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CXnNewstickerControl::SelectTitle() |
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{
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TInt index( GetNextTitleWithContent( 0 ) ); |
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TInt currentIndex( iCurrentTitleIndex ); |
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iCurrentTitleIndex = index; |
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if ( currentIndex != iCurrentTitleIndex ) |
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{
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if ( currentIndex != KErrNotFound ) |
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{
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iAdapter->ReportNewstickerEvent( |
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XnPropertyNames::action::trigger::name::KTitleScrolled, |
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currentIndex ); |
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} |
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if ( iCurrentTitleIndex != KErrNotFound ) |
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{
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iAdapter->ReportNewstickerEvent( |
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XnPropertyNames::action::trigger::name::KTitleToScroll, |
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iCurrentTitleIndex ); |
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} |
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} |
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return iCurrentTitleIndex; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::SelectNextTitle |
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// ----------------------------------------------------------------------------- |
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// |
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TBool CXnNewstickerControl::SelectNextTitle() |
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{
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TBool ret( EFalse ); |
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TInt lastIndex( iTitleTexts.Count() - 1 ); |
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TInt lastIndexWithContent( LastIndexWithContent() ); |
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TInt currentIndex( iCurrentTitleIndex ); |
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if ( lastIndexWithContent == KErrNotFound ) |
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{
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// Loop done |
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ret = ETrue; |
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} |
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else if ( !iScrollLooping && iCurrentTitleIndex == lastIndexWithContent ) |
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{
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// Loop done |
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ret = ETrue; |
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} |
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else |
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{
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if ( iCurrentTitleIndex + 1 > lastIndexWithContent ) |
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{
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// At the end, get first |
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iCurrentTitleIndex = |
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GetNextTitleWithContent( 0 ); |
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} |
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else |
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{
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// find next index with content |
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iCurrentTitleIndex = |
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GetNextTitleWithContent( iCurrentTitleIndex + 1 ); |
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} |
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} |
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if ( ret ) |
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{
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if ( iCurrentTitleIndex != KErrNotFound ) |
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{
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iAdapter->ReportNewstickerEvent( |
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XnPropertyNames::action::trigger::name::KTitleScrolled, |
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iCurrentTitleIndex ); |
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} |
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} |
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else |
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{
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if ( currentIndex != iCurrentTitleIndex && currentIndex != KErrNotFound ) |
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{
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iAdapter->ReportNewstickerEvent( |
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XnPropertyNames::action::trigger::name::KTitleScrolled, |
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currentIndex ); |
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} |
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if ( currentIndex != iCurrentTitleIndex && iCurrentTitleIndex != KErrNotFound ) |
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{
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iAdapter->ReportNewstickerEvent( |
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XnPropertyNames::action::trigger::name::KTitleToScroll, |
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iCurrentTitleIndex ); |
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} |
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} |
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return ret; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::PeekNextTitle |
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// ----------------------------------------------------------------------------- |
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// |
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TPtrC CXnNewstickerControl::PeekNextTitle( TBool& aEndOfLoop ) const |
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{
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TBool ret( EFalse ); |
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TInt lastIndex( iTitleTexts.Count() - 1 ); |
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TInt lastIndexWithContent = LastIndexWithContent(); |
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TPtrC retval( KNullDesC() ); |
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if ( lastIndexWithContent == KErrNotFound ) |
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{
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// Loop done |
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ret = ETrue; |
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} |
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else if ( !iScrollLooping && iCurrentTitleIndex == lastIndexWithContent ) |
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{
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// Loop done |
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ret = ETrue; |
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retval.Set( CurrentTitle() ); |
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} |
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else |
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{
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if ( iCurrentTitleIndex + 1 > lastIndexWithContent ) |
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{
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// At the end, get first |
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retval.Set( Title( GetNextTitleWithContent( 0 ) ) ); |
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} |
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else |
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{
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// find next index with content |
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retval.Set( Title( GetNextTitleWithContent( iCurrentTitleIndex + 1 ) ) ); |
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} |
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} |
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aEndOfLoop = ret; |
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return retval; |
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} |
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// ----------------------------------------------------------------------------- |
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// CXnNewstickerControl::IsVisibleTitles |
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// ----------------------------------------------------------------------------- |
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// |
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TBool CXnNewstickerControl::IsVisibleTitles() const |
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{
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for( TInt i = 0; i < iTitleTexts.Count(); i++ ) |
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{
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const TDesC& title( *iTitleTexts[i] ); |
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if( title != KNullDesC() ) |
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{
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return ETrue; |
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} |
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} |
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return EFalse; |
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} |
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// End of File |