widgetmodel/alfwidgetmodel/src/alfanchorlayoutmanager.cpp
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     1 /*
       
     2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  anchorlayoutmanager with focus handling in 1D (next/previous)
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #include <alf/alfanchorlayoutmanager.h>
       
    20 #include <alf/alfexceptions.h>
       
    21 #include <alf/alfwidgetcontrol.h>
       
    22 #include <osn/ustring.h>
       
    23 #include <osn/osnnew.h>
       
    24 
       
    25 #include "alfanchorlayoutmanagerimpl.h"
       
    26 
       
    27 using osncore::UString;
       
    28 
       
    29 using namespace Alf;
       
    30 
       
    31 namespace Alf
       
    32     {
       
    33 
       
    34 // ======== MEMBER FUNCTIONS ========
       
    35 
       
    36 // ---------------------------------------------------------------------------
       
    37 // layout manager constructor
       
    38 // ---------------------------------------------------------------------------
       
    39 //
       
    40 OSN_EXPORT AlfAnchorLayoutManager::AlfAnchorLayoutManager() 
       
    41     : AlfLayoutManager(EAlfLayoutTypeAnchor)
       
    42     {
       
    43     mData.reset(new (EMM) AlfAnchorLayoutManagerImpl(*this));
       
    44     }
       
    45         
       
    46 // ---------------------------------------------------------------------------
       
    47 // virtual destructor
       
    48 // ---------------------------------------------------------------------------
       
    49 //
       
    50 OSN_EXPORT AlfAnchorLayoutManager::~AlfAnchorLayoutManager()
       
    51     {
       
    52     }
       
    53     
       
    54 // ---------------------------------------------------------------------------
       
    55 // from AlfLayoutManager
       
    56 // notifies the layout manager, that the child control's layout
       
    57 // must be updated.
       
    58 // ---------------------------------------------------------------------------
       
    59 //
       
    60 OSN_EXPORT void AlfAnchorLayoutManager::updateChildLayout(
       
    61     CAlfWidgetControl* aControl)
       
    62     {
       
    63     CAlfLayout& layout = getLayout();
       
    64     doUpdateChildLayout(aControl);
       
    65     layout.UpdateChildrenLayout();
       
    66 
       
    67     //doUpdateChildLayout changes the visual size and position.
       
    68     //need to notify the widget that size and position has changed.
       
    69     
       
    70     //set the size and postion for aControl
       
    71     TAlfRealRect rect;
       
    72     if (controlRect(*aControl, rect)) //returns the real rect (of the root visual)
       
    73         {
       
    74         setControlRect(*aControl, rect);
       
    75         }
       
    76 
       
    77     // Inform parent layout manager about the changed presentation size
       
    78     owner().updateParentLayout();
       
    79     }
       
    80         
       
    81 // ---------------------------------------------------------------------------
       
    82 // from IAlfLayoutManager
       
    83 // notifies the layout manager, that the control's has been
       
    84 // removed from the layout.
       
    85 // ---------------------------------------------------------------------------
       
    86 //
       
    87 OSN_EXPORT void AlfAnchorLayoutManager::childRemoved(CAlfWidgetControl* aControl)
       
    88     {
       
    89     //when control is removed from layout, no change to other widget rects,
       
    90     // just call the base class
       
    91     AlfLayoutManager::childRemoved(aControl);
       
    92     }
       
    93     
       
    94 // ---------------------------------------------------------------------------
       
    95 // from AlfLayoutManager
       
    96 // notifies the layout manager, that the child control's layout
       
    97 // must be updated.
       
    98 // ---------------------------------------------------------------------------
       
    99 //    
       
   100 OSN_EXPORT void AlfAnchorLayoutManager::doUpdateChildLayout(
       
   101     CAlfWidgetControl* /*aControl*/)
       
   102     {
       
   103     //anchorlayout changes the position and size, nothing to do here.
       
   104     }
       
   105 
       
   106 // ---------------------------------------------------------------------------
       
   107 // From class IAlfInterfaceBase.
       
   108 // Getter for interfaces provided by the element.
       
   109 // ---------------------------------------------------------------------------
       
   110 //
       
   111 OSN_EXPORT IAlfInterfaceBase* AlfAnchorLayoutManager::makeInterface( 
       
   112     const IfId& aType )
       
   113     {
       
   114     UString param(aType.mImplementationId);
       
   115     if (param == IAlfLayoutManager::type().mImplementationId)
       
   116         {
       
   117         return this;
       
   118         }      
       
   119 
       
   120     // Let the implementation class try the interface creation
       
   121     IAlfInterfaceBase* pInterface = mData->makeInterface(aType);
       
   122     return pInterface;
       
   123     }
       
   124  } // Alf