author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 07:56:43 +0200 | |
changeset 0 | 15bf7259bb7c |
child 7 | 433cbbb6a04b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 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: ?Description |
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* |
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*/ |
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#ifndef __HUICONTROLGROUP_H__ |
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#define __HUICONTROLGROUP_H__ |
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#include <e32base.h> |
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#include <barsread.h> |
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#include <uiacceltk/HuiTimedValue.h> |
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#include <uiacceltk/HuiObserverArray.h> |
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#include <uiacceltk/huieventhandler.h> |
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#include <uiacceltk/HuiSessionObject.h> |
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/* Forward declarations. */ |
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class CHuiEnv; |
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class CHuiControl; |
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class CHuiTransformation; |
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/** |
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* CHuiControlgroup instances are used to organize controls into logical |
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* groups (based on, e.g., UI views or functionality). |
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* |
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* Control groups have ownership of CHuiControl instances in the toolkit. |
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* |
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* During the application startup the application programmer sets up |
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* controls into control groups. Typically the initialization phase ends |
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* up showing one or more control groups on a display: |
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* |
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* <code> |
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* iHuiDisplay->Roster().ShowL(group); |
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* </code> |
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*/ |
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NONSHARABLE_CLASS(CHuiControlGroup) : public CBase, public MHuiSessionObject |
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{ |
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public: |
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/* Constructors and destructor. */ |
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/** |
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* Constructor. |
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*/ |
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CHuiControlGroup(TInt aResourceId, CHuiEnv& aEnv); |
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/** |
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* Second-phase constructor. |
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*/ |
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void ConstructL(); |
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/** |
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* Second-phase constructor that reads definitions using a resource |
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* reader. |
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* |
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* @param aReader Resource reader initialized with the group definition. |
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*/ |
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void ConstructFromResourceL(TResourceReader& aReader); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CHuiControlGroup(); |
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/* Methods. */ |
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/** |
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* Determines the identifier of the control group (from a resource file). |
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* |
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* @return Resource identifier. |
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*/ |
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IMPORT_C TInt ResourceId() const; |
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/** |
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* Adds a new control into the group. The group takes ownership of the |
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* control. |
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* |
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* @param aControl Control to insert into the group. |
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*/ |
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IMPORT_C void AppendL(CHuiControl* aControl); |
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/** |
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* Adds a new control into the group and pops it off of the cleanup |
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* stack. |
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* |
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* @param aControl Control to insert into the group and pop. |
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*/ |
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IMPORT_C void AppendAndPopL(CHuiControl* aControl); |
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/** |
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* Removes a control from the control group. |
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* |
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* @param aControl Control to remove from the group. The control's |
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* ownership is transferred to the caller. Note that |
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* controls should never be used unless they are |
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* owned by a control group. |
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* |
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* @return KErrNone, if successful. KErrNotFound, if the control is not |
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* in the group. |
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*/ |
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IMPORT_C TInt Remove(CHuiControl* aControl); |
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/** |
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* Returns the number of controls within this group. |
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* |
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* @return Number of controls. |
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*/ |
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IMPORT_C TInt Count() const; |
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/** |
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* Access a control within the group, by its index into the |
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* internal list of controls. Will panic if an out-of-bounds |
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* index is passed. |
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* |
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* @param aIndex Index of the control to return. |
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* |
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* @return Reference to the requested control. Always |
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* returns a valid control. |
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*/ |
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IMPORT_C CHuiControl& Control(TInt aIndex) const; |
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/** |
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* @return Pointer to the control, or <code>NULL</code> if the control |
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* is not in the group. |
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*/ |
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IMPORT_C CHuiControl* FindControl(TInt aId) const; |
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/** |
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* Enables or disables transformation of the control group. |
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*/ |
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IMPORT_C void EnableTransformationL(TBool aIsTransformed = ETrue); |
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/** |
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* Determines if the control group has a transformation. |
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*/ |
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IMPORT_C TBool IsTransformed() const; |
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/** |
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* Returns the transformation of the control group. |
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* |
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* @return Transformation steps. |
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* |
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* @panic THuiPanic::EVisualTransformNotEnabled |
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*/ |
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IMPORT_C CHuiTransformation& Transformation(); |
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/** |
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* Determines whether the group accepts input events. |
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*/ |
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IMPORT_C TBool AcceptInput() const; |
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/** |
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* Sets the input event acceptance of the group. |
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* |
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* @param aAcceptInput Accept input events. |
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*/ |
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IMPORT_C void SetAcceptInput(TBool aAcceptInput); |
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/** |
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* Determines if the control group has been changed. The roster calls this |
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* to determine if larger updates are necessary. |
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*/ |
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TBool Changed() const; |
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/** |
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* Clears the change flags of the control group and its member controls. |
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*/ |
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void ClearChanged(); |
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// Implementation of MHuiSessionObject |
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/** |
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* Gets the object type. |
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*/ |
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IMPORT_C TType Type() const; |
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/** |
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* Gets the session id for object. |
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*/ |
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IMPORT_C TInt SessionId() const; |
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/** |
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* Sets the session id for object. |
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*/ |
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IMPORT_C void SetSessionId(TInt aSessionId); |
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private: |
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/* Private methods */ |
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public: |
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/** Events that are not handled by any controls in the control group |
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are offered to these event handlers. */ |
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RHuiObserverArray<MHuiEventHandler> iUnhandledEventObservers; |
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private: |
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/** Resource ID that was passed in the constructor. */ |
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TInt iResourceId; |
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/** Environment. */ |
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CHuiEnv& iEnv; |
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/** Accepts input events. */ |
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TBool iAcceptInput; |
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/** Controls owned by the group. */ |
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RPointerArray<CHuiControl> iControls; |
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/** Common transformation for all the root visuals of the |
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control group. */ |
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CHuiTransformation* iTransform; |
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/** Session id */ |
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TInt iSessionId; |
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public: |
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/** |
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* Common opacity for all the controls of the group. |
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* |
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* @deprecated Do not use control and control group opacities. |
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* Instead, set up common parent layouts and adjust their |
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* opacities. Logic objects should not affect the visible |
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* elements. |
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*/ |
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THuiTimedValue iOpacity; |
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}; |
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#endif // __HUICONTROLGROUP_H__ |