author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:56:02 +0200 | |
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/* |
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* Copyright (c) 2007 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: interface for the scrollbar default lct base element. |
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* |
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*/ |
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|
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#ifndef I_ALF_SCROLLBARDEFAULTLCTBASEELEMENT_H |
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#define I_ALF_SCROLLBARDEFAULTLCTBASEELEMENT_H |
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|
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#include <alf/ialfelement.h> |
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#include <alf/ialfwidget.h> |
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#include <alf/ialfinterfacebase.h> |
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#include <alf/alfevent.h> |
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#include <alf/alfwidgetevents.h> |
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|
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using namespace osncore; |
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|
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namespace Alf |
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{ |
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/** |
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* @namespace alfscrollbardefaultbaseelement |
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* |
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* ident specifies the unique identifier for the base-element. |
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*/ |
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namespace alfscrollbardefaultbaseelement |
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{ |
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static const IfId ident = |
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{ |
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0,"BaseElement" |
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}; |
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} |
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/** |
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* An interface for the default base element of the scrollbar. |
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* |
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* The default base element is an interface that contains the basic layouting and scrolling logic of the scrollbar widget. |
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* The base element provides a simple scrollbar visualization. |
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* It allows the user to: |
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* 1. Specify the TotalLength ViewLength and ThumbWidth |
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* 2. Specify the opacity of thumb with respect to widget opacity |
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* |
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* The default base element of the scrollbar uses Anchor Layout |
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* |
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* The default base element also acts as an eventhandler and currently listens to following events: |
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* 1. EEventModelChanged, EEventScrollBarClicked |
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* |
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* default base element handles EEventScrollBarClicked event(Custom Event) which are convetred to higher level events |
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* like EEventScrollUp ,EEventScrollDown,EEventScrollLeft,EEventScrollRight , |
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* On receiving these events, the default base element accordingly changes the position of the thumb |
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* |
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* |
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* @lib alfscrollbarwidget.lib |
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|
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* @since S60 ?S60_version |
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*/ |
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class IAlfScrollBarDefaultBaseElement: public IAlfInterfaceBase |
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{ |
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|
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public: |
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|
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/** |
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* Getter for the type identifier of this interface. |
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* Usage: |
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* @code |
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* IAlfElement* element; |
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* IAlfBaseElement* baseElement = |
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* static_cast<IAlfScrollBarBaseElement*> ( |
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* element->makeInterface (IAlfScrollBarBaseElement::type() ) ); |
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* @endcode |
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* @see \link IAlfInterfaceBase \endlink for |
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* \link IAlfInterfaceBase::makeInterface \endlink |
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* The above code provides all the interfaces of ScrollBar base element. |
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* @since S60 ?S60_version |
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* @return Identifier of this interface. |
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*/ |
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static inline const IfId& type() |
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{ |
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return alfscrollbardefaultbaseelement :: ident; |
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} |
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|
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|
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/** |
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* Sets the animation time for the thumb movement |
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* Controls the movement of the thumb in the context of |
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* scroll |
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* @param aTime, Animation time in milliseconds |
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*/ |
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virtual void setThumbAnimationTime ( int aTime ) = 0; |
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|
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/** |
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* Gets the Thumb animation time. |
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* |
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* @return Animation time. |
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*/ |
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virtual int getThumbAnimationTime() const = 0; |
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|
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/** |
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* This function is deprecated. Use attribute APIs to set or get opacity. |
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* Sets the Opacity of widget. |
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* Default value of scrollbar opacity is 1.0. |
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* |
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* @param aOpacity Opacity of the scrollbar. The value should be between 0.0 |
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* to 1.0. |
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* |
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* @exception AlfException |
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*/ |
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virtual void setOpacity(float aOpacity)=0; |
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/** |
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* This function is deprecated. Use attribute APIs to set or get opacity. |
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* Gets the Opacity of widget. |
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* |
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* @return: Thumb opacity |
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*/ |
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virtual float getOpacity() const=0; |
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/** |
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* Sets the Opacity of thumb. This is relative to widget opacity.Default value is 1.0. |
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* The value of aOpacity should be between 0.0 to 1.0 |
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* @param aOpacity Opacity of the thumb |
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*/ |
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virtual void setThumbOpacity ( float aOpacity ) = 0; |
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/** |
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* Gets the Opacity of thumb. |
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* |
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* @return: Thumb opacity |
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*/ |
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virtual float getThumbOpacity() const = 0; |
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/** |
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* Destructor. |
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*/ |
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virtual ~IAlfScrollBarDefaultBaseElement() {} |
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}; // class IAlfScrollBarDefaultBaseElement |
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} // namespace Alf |
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#endif // IALF_SCROLLBARDEFAULTLCTBASEELEMENT_H |