inc/alf/alflinevisualattributesetter.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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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:   Line visual attribute setter Header.
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*
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*/
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#ifndef ALFLINEVISUALATTRIBUTESETTER_H
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#define ALFLINEVISUALATTRIBUTESETTER_H
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#include <osn/osndefines.h>
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#include "alf/alfcommonvisualattributesetter.h"
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class CAlfCurvePath;
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class CAlfLineVisual;
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namespace Alf
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    {
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class AlfLineVisualAttributeSetterImpl;
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/** @class AlfLineVisualAttributeSetter alflinevisualattributesetter.h 
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 *  "alf/alflinevisualattributesetter.h"
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 *  The implementation of the attribute setter.
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 *
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 *  @interfaces IAlfAttributeSetter
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 *  @lib alfwidgetmodel.lib
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 *  @since S60 ?S60_version
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 *  @status Draft
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 */
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class AlfLineVisualAttributeSetter : public AlfCommonVisualAttributeSetter
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    {
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public:
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    /**
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     * Constructor.
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     *
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	 * @exception std::bad_alloc     
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     * @param aType Type of the attribute setter.
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     */
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    OSN_IMPORT AlfLineVisualAttributeSetter();
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    /**
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     * Destructor.
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     */
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    OSN_IMPORT virtual ~AlfLineVisualAttributeSetter();
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    /**
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     * Sets an attribute value in the target visual immediately without
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     * a transition.
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     *
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     * @exception osncore::AlfVisualException Thrown with the error code 
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     *     osncore::EInvalidVisual when supplied visual is not a line visual.
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     *
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aContainer The container holding the new value of the attribute.
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     *      Ownership of the object is not transferred.
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     * @param aData Not used currently.
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     */
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    OSN_IMPORT virtual void setAttributeValue(
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        CAlfVisual &aVisual,
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        AlfAttributeContainer* aContainer,
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        IAlfMap* aData);
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    /**
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     * Deprecated! Do not use!
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     * Creates a command to change the value of an attribute in the target
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     * visual gradually with a transition.
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     *
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aContainer The container holding the new value of the
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     *      attribute.Ownership of the object is not transferred.
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     * @param aData Not used currently.
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     * @param aTransitionTime Time used for the transition.
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     * @param aRefVisual Optional reference visual. If not NULL, the target
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     *       value of the attribute is defined by adding the value
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     *       specific by aContainer to the corresponding attribute
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     *      value in the reference visual.
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     * @ret The command to gradually change the attribute in the target visual
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     */
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    OSN_IMPORT virtual TAlfCommand* createCommand(
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        CAlfVisual& aVisual,
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        AlfAttributeContainer* aContainer,
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        IAlfMap* aData,
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        int aTransitionTime = 0,
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        CAlfVisual* aRefVisual = NULL );
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    /**
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     * Creates commands to change the given attribute values in the target
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     * visual gradually with a transition.
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     * Then sends the commands via the ALF environment.
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     *
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aContainer The attribute container holding attribute value(s)
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     *       used by the attribute setter. Ownership is not
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     *       transferred. The container can hold new values for
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     *       multiple different attributes, in which case several
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     *       commands are executed.
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     * @param aRefVisual Optional reference visual. If not NULL, the target
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     *       value of the attribute is defined by adding the value specific by
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     *       aContainer to the corresponding attribute value in the reference
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     *       visual
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     */
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    OSN_IMPORT virtual void createAndSendCommands(
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        CAlfVisual& aVisual,
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        AlfAttributeContainer* aContainer,
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        CAlfVisual* aRefVisual = NULL );
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protected:
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    /**
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     * Sets an dynamic attribute value in the target visual using transitions
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     * defined in attributes
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     *
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aAttr The attribute to process. Doesn't take ownership
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     * @param aContainer The container holding attributes. Ownership of the
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     *      object is not transferred.
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     */
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    virtual void handleDynamicAttribute (
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        CAlfVisual &aVisual,
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        AlfAttribute& aAttr,
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        AlfAttributeContainer& aContainer);
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    /**
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     * Sets a value for static attribute in the target visual immediately 
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     * without any transition using data in map.
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     *
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     * @exception osncore::AlfDataException Thrown with the error code 
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     *     osncore::ECommonError when empty attribute for line visual 
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     *     is supplied .
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     * @exception osncore::AlfAttributeException Thrown with the error code 
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     *     osncore::EInvalidAttribute when wrong attribute for line visual 
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     *     is supplied .
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     * @exception osncore::AlfAttributeException Thrown with the error code 
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     *     osncore::EIncompleteAttributeValues when all values of an attribute
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     *     for line visual are not supplied .
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aAttr The attribute to process. Doesn't take ownership
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     * @param aContainer The container holding attributes. Ownership of the 
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     *                   object is not transferred.
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     * @param aData Contains data.Ownership of the object is not transferred.
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     */
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    virtual void handleStaticDataAttribute ( CAlfVisual &aVisual,
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        AlfAttribute& aAttr,
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        AlfAttributeContainer& aContainer,
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        IAlfMap* aData );
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    /**
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     * Sets a value for dynamic attribute value in the target visual using 
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     * transitions and data in map.
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     *
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     * @exception osncore::AlfDataException Thrown with the error code 
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     *     osncore::ECommonError when empty attribute for line visual 
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     *     is supplied .
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aAttr The attribute to process. Doesn't take ownership
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     * @param aContainer The container holding attributes. Ownership of the
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     *                   object is not transferred.
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     * @param aData Contains data.Ownership of the object is not transferred.
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     */
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    virtual void handleDynamicDataAttribute (
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        CAlfVisual &aVisual,
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        AlfAttribute& aAttr,
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        AlfAttributeContainer& aContainer,
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        IAlfMap* aData );
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    /**
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     * Sets a value of a static attribute to target visual immediately without
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     * any transition.
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     *
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     * @exception osncore::AlfAttributeException Thrown with the error code 
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     *     osncore::EInvalidAttribute when wrong attribute data for line visual
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     *     is supplied .
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     * @param aVisual The target visual. Doesn't take ownership
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     * @param aAttr The attribute to process. Doesn't take ownership
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     * @param aContainer The container holding attributes. Ownership of the 
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     *                   object is not transferred.
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     */
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    virtual void handleStaticAttribute (
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        CAlfVisual &aVisual,
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        AlfAttribute& aAttr,
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        AlfAttributeContainer& aContainer);
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private:
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    /**
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     * Creates and returns a toolkit defined mappping function based on the
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     * attribute content.
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     * The int value-mapping function mapping is the following:
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     * 0 - KConstMappingFunction
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     * 1 - KLinearMappingFunction
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     * 2 - KSineMappingFunction
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     * 3 - KCosineMappingFunction
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     * @param aAttribute Attribute containing the deciding int value and data
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     *                   required for construction of the mapping function.
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     * @param aEnv       Environment
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     * @result The mapping function pointer
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     */
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    MAlfMappingFunction* getMappingFunction(
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        AlfAttribute& aAttribute ,
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        CAlfEnv& aEnv);
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    /**
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     * Creates and returns a toolkit defined mappping function based on the
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     * container content.
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     * The int value-mapping function mapping is the following:
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     * 0 - KConstMappingFunction
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     * 1 - KLinearMappingFunction
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     * 2 - KSineMappingFunction
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     * 3 - KCosineMappingFunction
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     * @param aContainer Container containing the deciding int value and data
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     *                   required for construction of the mapping function.
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     * @param aEnv       Environment
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     * @result The mapping function pointer
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     */
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    MAlfMappingFunction* getMappingFunctionFromContainer(
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        IAlfContainer* aContainer,
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        CAlfEnv& aEnv);
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    /**
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     * Gets the path from the line visual or creates it if does not exist
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     * @param aLineVisual Line Visual
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     * @result The curvepath
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     */
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    CAlfCurvePath* getCurvePath(CAlfLineVisual* aLineVisual);
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    /**
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     * Check if data in the attribute is int or float.
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     * Return the value as a float value
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     *
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     * @param aAttr The attribute containing the value
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     * @param aIndex The index of the value to be checked
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     * return Content of the attribute
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     */
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    float floatOrInt(const AlfAttribute& aAttr, int aIndex);
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    /**
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     * Check if data in the variant type is int or float.
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     * Return the value as a float value
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     *
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     * @param aData The variant type containing the value
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     * return Content of the variant type
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     */
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    float floatOrIntFromData(IAlfVariantType* aData);
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private: // data
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    auto_ptr<AlfLineVisualAttributeSetterImpl> mImpl;
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    };
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    } // namespace Alf
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#endif // ALFLINEVISUALATTRIBUTESETTER_H
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