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1 /* |
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2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: layoutmanager implementation class with focus handling in 1D (next/previous) |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <alf/ialfwidgetcontrol.h> |
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20 #include <alf/alfvisual.h> |
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21 #include <alf/alfanchorlayout.h> |
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22 #include "alf/alfwidget.h" |
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23 #include <alf/alfvisualfactory.h> |
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24 #include <alf/alfexceptions.h> |
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25 #include <alf/ialflayoutpreferences.h> |
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26 #include <osn/osnnew.h> |
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27 |
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28 //stl |
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29 #include <algorithm> //for min & max |
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30 |
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31 #include "alfanchorlayoutmanagerimpl.h" |
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32 |
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33 using namespace Alf; |
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34 |
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35 namespace Alf |
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36 { |
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37 // ======== MEMBER FUNCTIONS ======== |
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38 |
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39 // --------------------------------------------------------------------------- |
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40 // layoutmanagerimpl constructor |
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41 // --------------------------------------------------------------------------- |
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42 // |
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43 AlfAnchorLayoutManagerImpl::AlfAnchorLayoutManagerImpl( |
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44 AlfAnchorLayoutManager& aAnchorLayoutManager) : |
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45 mAnchorLayoutManager(aAnchorLayoutManager) |
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46 { |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // creates the layout used by the layoutmanager. |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 AlfAnchorLayoutManagerImpl::~AlfAnchorLayoutManagerImpl() |
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54 { |
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55 } |
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56 |
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57 // --------------------------------------------------------------------------- |
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58 // from IAlfLayoutPreferences |
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59 // Returns the minimum area that this layout manager can occupy by observing |
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60 // the minimum sizes of the child UI elements in the layout |
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61 // --------------------------------------------------------------------------- |
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62 // |
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63 bool AlfAnchorLayoutManagerImpl::getMinimumSize( TAlfXYMetric& /*aMinSize*/ ) const |
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64 { |
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65 return false; |
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66 } |
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67 |
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68 // --------------------------------------------------------------------------- |
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69 // from IAlfLayoutPreferences |
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70 // Returns the maximum area that this layout manager can occupy by observing |
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71 // the maximum sizes of the child UI elements in the layout |
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72 // --------------------------------------------------------------------------- |
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73 // |
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74 bool AlfAnchorLayoutManagerImpl::getMaximumSize( TAlfXYMetric& /*aMaxSize*/ ) const |
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75 { |
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76 return false; |
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77 } |
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78 |
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79 // --------------------------------------------------------------------------- |
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80 // Combines and returns the preferred sizes of all child UI elements according |
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81 // to the layouting rules. |
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82 // --------------------------------------------------------------------------- |
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83 // |
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84 bool AlfAnchorLayoutManagerImpl::getPreferredSize(TAlfXYMetric& /*aPreferredSize*/) const |
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85 { |
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86 return false; |
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87 } |
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88 |
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89 // --------------------------------------------------------------------------- |
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90 // from IAlfLayoutPreferences |
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91 // At the moment doesn't do anything since preferred size is being queried |
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92 // from the child UI elements added to this layout manager. |
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93 // --------------------------------------------------------------------------- |
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94 // |
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95 void AlfAnchorLayoutManagerImpl::setPreferredSize( const TAlfXYMetric& aPreferredSize) |
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96 { |
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97 TAlfTimedPoint size((float)aPreferredSize.iX.iMagnitude,(float)aPreferredSize.iY.iMagnitude); |
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98 layout().SetSize(size); |
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99 mAnchorLayoutManager.owner().updateParentLayout(); |
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100 } |
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101 |
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102 // --------------------------------------------------------------------------- |
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103 // From class IAlfInterfaceBase. |
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104 // Getter for interfaces provided by the element. |
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105 // --------------------------------------------------------------------------- |
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106 // |
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107 IAlfInterfaceBase* AlfAnchorLayoutManagerImpl::makeInterface(const IfId& aType) |
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108 { |
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109 UString param(aType.mImplementationId); |
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110 if (param == IAlfLayoutPreferences::type().mImplementationId) |
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111 { |
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112 return this; |
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113 } |
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114 |
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115 return NULL; |
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116 } |
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117 |
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118 // --------------------------------------------------------------------------- |
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119 // returns the anchorlayout used by the layoutmanager |
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120 // --------------------------------------------------------------------------- |
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121 // |
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122 CAlfAnchorLayout& AlfAnchorLayoutManagerImpl::layout() const |
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123 { |
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124 return dynamic_cast<CAlfAnchorLayout&>(mAnchorLayoutManager.getLayout()); |
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125 } |
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126 |
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127 } // Alf |