author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 21 Jun 2010 16:15:51 +0300 | |
branch | RCL_3 |
changeset 23 | 514d98f21c43 |
parent 0 | e83bab7cf002 |
permissions | -rw-r--r-- |
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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: layoutmanager implementation header. |
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* |
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*/ |
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#ifndef ALFLAYOUTMANAGERIMPL |
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#define ALFLAYOUTMANAGERIMPL |
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#include <osn/osndefines.h> |
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#include <alf/alflayoutmanager.h> |
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#include <alf/ialflayoutpreferences.h> |
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using std::auto_ptr; |
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namespace Alf |
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{ |
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class CAlfWidgetControl; |
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class IAlfWidget; |
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class IAlfLayoutPreferences; |
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|
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/** |
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* layoutmanager implementation class |
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* |
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* @lib alfwidgetmodel.lib |
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* @since S60 ?S60_version |
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*/ |
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class AlfLayoutManagerImpl : public IAlfLayoutPreferences |
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{ |
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public: |
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/** |
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* layout manager constructor |
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* |
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* @param aLayoutType type of layout used by the manager. |
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*/ |
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AlfLayoutManagerImpl(TAlfLayoutType aLayoutType); |
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|
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/** |
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* destructor |
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*/ |
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~AlfLayoutManagerImpl(); |
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/** |
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* creates the layout used by the layoutmanager. |
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* |
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* @param aOwner, owner-control of the the created layout. |
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* @param aParentLayout parent for the created layout |
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* @param aLayoutIndex index, where created visual should be placed in the parent layout. |
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*/ |
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void createLayout(CAlfWidgetControl& aOwner, CAlfLayout* aParentLayout, |
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int aLayoutIndex); |
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/** |
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* returns the layout used by layoutmanager. |
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* |
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* @return layout used by this layoutmanager. |
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*/ |
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CAlfLayout& getLayout() const; |
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/** |
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* updates the main layout |
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*/ |
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void updateMainLayout(); |
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/** |
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* notifies the layout manager, that the control's has been |
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* removed from the layout. |
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* |
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* @param aControl control, which size has changed. |
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*/ |
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void childRemoved(CAlfWidgetControl* aControl); |
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/** |
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* notifies the layout manager, that the child control's layout |
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* must be updated. |
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* |
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* @param aControl control, which size or position has changed. |
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*/ |
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void doUpdateChildLayout(CAlfWidgetControl* aControl); |
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/** |
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* returns the rect of the control. |
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* |
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* @param aControl, control, which size is queried. |
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* @param aRect, will receive the rect of aControl. |
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*/ |
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bool controlRect(CAlfWidgetControl& aControl, TAlfRealRect& aRect); |
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/** |
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* sets the size and position to the widget. |
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* |
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* @param aWidget, widget, which size and position is being set. |
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* @param aRect, rect for aWidget |
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*/ |
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void setWidgetRect(IAlfWidget& aWidget, const TAlfRealRect &aRect); |
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/** |
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* sets the position to the widget. |
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* |
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* @param aWidget, widget, which position is being set. |
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* @param aPos, position for aWidget |
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*/ |
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void setWidgetPosition(IAlfWidget& aWidget, const TAlfRealPoint &aPos); |
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/** |
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* sets the size to widget. |
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* |
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* @param aWidget, widget, which size is being set. |
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* @param aSize, new size for aWidget. |
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*/ |
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void setWidgetSize(IAlfWidget& aWidget, const TAlfRealPoint &aSize); |
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/** |
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* updates widget size and position properties for all the children |
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* to correct sizes and positions of the root visuals. |
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*/ |
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void updateAllWidgetRects(); |
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/** |
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* @return the child visual count |
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*/ |
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int count() const; |
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/** |
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* returns the control at aIndex. |
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* |
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* @param aIndex index for the control. |
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* @return control at aIndex |
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*/ |
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CAlfWidgetControl* getControl(int aIndex) const; |
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/** |
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* @return the owner control of the layoutmanager. |
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*/ |
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CAlfWidgetControl& owner() const ; |
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public: |
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// from base class IAlfLayoutPreferences |
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/** |
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* Returns the minimum size of the layout by combining the minimum sizes of the |
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* layed out visuals. |
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* |
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* @param aMinSize The minimum size that the object would like to be laid out to |
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* @return false iff none of the layed out UI elements do not care about minimum size |
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*/ |
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virtual bool getMinimumSize( TAlfXYMetric& aMinSize ) const; |
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/** |
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* Returns the maximum size of the layout by combining the maximum sizes of the |
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* layed out visuals. |
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* |
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* @param aMaxSize The maximum size that the object would like to be laid out to |
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* @return false iff none of the layed out UI elements do not care about maximum size |
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*/ |
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virtual bool getMaximumSize( TAlfXYMetric& aMaxSize ) const; |
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/** |
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* Returns the size combined by all preferred sizes of child UI elements in this layout |
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* when they are being layed out according to the layout manager rules. |
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* |
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* @param aPreferredSize Filled with the referred area occupied by child elements when |
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* layed out by layouting rules in this layout manager. |
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* @return False if none of the child components report their preferred size. True |
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* otherwise. |
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*/ |
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virtual bool getPreferredSize(TAlfXYMetric& aPreferredSize) const; |
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/** |
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* Set the preferred size into a presentation object. |
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* |
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* This is not supported on the layout manager. Users should set preferred sizes of the |
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* contained UI elements. |
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*/ |
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virtual void setPreferredSize( const TAlfXYMetric& aPreferredSize ); |
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/** |
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* returns the layout preferences for a control |
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* |
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* @param aControl control instance |
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* @return layout preferences for a control. |
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*/ |
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const IAlfLayoutPreferences* getLayoutPreferences(CAlfWidgetControl* aControl) const; |
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public: |
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// from base class IAlfInterfaceBase |
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/** |
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* Interface getter. |
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* @see IAlfInterfaceBase::MakeInterface |
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* |
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* @since S60 ?S60_version |
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* @param aType The type id of the queried interface. |
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* @return The queried interface, or NULL if the interface is not |
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* supported or available. |
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*/ |
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virtual IAlfInterfaceBase* makeInterface( const IfId& aType ); |
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private: |
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/** |
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* returns the control, which owns the visual |
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* |
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* @param aVisual visual, which the control owns. |
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* @return control, which owns the visual at aIndex. |
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*/ |
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CAlfWidgetControl* getControl(CAlfVisual& aVisual) const; |
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/** |
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* finds the root visual for a control |
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* |
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* @param aControl control, which rootvisual is searched |
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* @return root visual |
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*/ |
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CAlfVisual* findRootVisual(CAlfWidgetControl* aControl) const; |
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/** |
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* checks, that layout is created. If not, throws an exception. |
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*/ |
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void checkLayout() const; |
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private: |
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/** |
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* the layout created and used by the layout manager. |
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* Destroyed along with instance of this class. |
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*/ |
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auto_ptr<CAlfLayout> mLayout; |
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/** |
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* the layout type of mLayout |
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*/ |
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TAlfLayoutType mLayoutType; |
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}; |
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} // namespace Alf |
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#endif // ALFLAYOUTMANAGERIMPL |