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: anchor layoutmanager private implementation header. |
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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 #ifndef ALFANCHORLAYOUTMANAGERIMPL_H |
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20 #define ALFANCHORLAYOUTMANAGERIMPL_H |
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21 |
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22 #include <osn/osndefines.h> |
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23 #include <alf/alfanchorlayoutmanager.h> |
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24 #include <alf/ialflayoutpreferences.h> |
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25 |
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26 using std::auto_ptr; |
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27 using Alf::AlfAnchorLayoutManager; |
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28 |
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29 class CAlfControl; |
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30 class CAlfAnchorLayout; |
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31 |
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32 namespace Alf |
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33 { |
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34 |
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35 class CAlfWidgetControl; |
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36 class AlfWidget; |
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37 class IAlfLayoutPreferences; |
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38 |
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39 /** |
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40 * layoutmanager implementation class |
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41 * |
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42 * @lib alfwidgetmodel.lib |
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43 * @since S60 ?S60_version |
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44 */ |
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45 class AlfAnchorLayoutManagerImpl : public IAlfLayoutPreferences |
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46 { |
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47 public: |
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48 /** |
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49 * layout manager constructor |
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50 * |
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51 * @param aLayoutType type of layout used by the manager. |
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52 */ |
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53 AlfAnchorLayoutManagerImpl(AlfAnchorLayoutManager& aAnchorLayoutManager); |
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54 |
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55 /** |
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56 * destructor |
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57 */ |
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58 ~AlfAnchorLayoutManagerImpl(); |
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59 |
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60 public: |
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61 // from base class IAlfLayoutPreferences |
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62 |
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63 /** |
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64 * Returns the minimum size of the layout by combining the minimum sizes of the |
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65 * layed out visuals. |
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66 * |
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67 * @param aMinSize The minimum size that the object would like to be laid out to |
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68 * @return false iff none of the layed out UI elements do not care about minimum size |
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69 */ |
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70 virtual bool getMinimumSize( TAlfXYMetric& aMinSize ) const; |
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71 |
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72 /** |
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73 * Returns the maximum size of the layout by combining the maximum sizes of the |
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74 * layed out visuals. |
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75 * |
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76 * @param aMaxSize The maximum size that the object would like to be laid out to |
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77 * @return false iff none of the layed out UI elements do not care about maximum size |
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78 */ |
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79 virtual bool getMaximumSize( TAlfXYMetric& aMaxSize ) const; |
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80 |
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81 /** |
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82 * Returns the size combined by all preferred sizes of child UI elements in this layout |
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83 * when they are being layed out according to the layout manager rules. |
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84 * |
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85 * @param aPreferredSize Filled with the referred area occupied by child elements when |
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86 * layed out by layouting rules in this layout manager. |
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87 * @return False if none of the child components report their preferred size. True |
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88 * otherwise. |
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89 */ |
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90 virtual bool getPreferredSize(TAlfXYMetric& aPreferredSize) const; |
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91 |
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92 /** |
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93 * Set the preferred size into a presentation object. |
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94 * |
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95 * This is not supported on the layout manager. Users should set preferred sizes of the |
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96 * contained UI elements. |
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97 */ |
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98 virtual void setPreferredSize( const TAlfXYMetric& aPreferredSize ); |
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99 |
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100 public: |
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101 // from base class IAlfInterfaceBase |
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102 |
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103 /** |
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104 * Interface getter. |
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105 * @see IAlfInterfaceBase::MakeInterface |
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106 * |
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107 * @since S60 ?S60_version |
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108 * @param aType The type id of the queried interface. |
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109 * @return The queried interface, or NULL if the interface is not |
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110 * supported or available. |
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111 */ |
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112 virtual IAlfInterfaceBase* makeInterface( const IfId& aType ); |
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113 |
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114 private: |
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115 /** |
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116 * returns the anchorlayout used by the layoutmanager. |
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117 */ |
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118 CAlfAnchorLayout& layout() const; |
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119 private: |
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120 |
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121 AlfAnchorLayoutManager & mAnchorLayoutManager; |
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122 |
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123 }; |
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124 |
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125 } // namespace Alf |
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126 |
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127 #endif // ALFANCHORLAYOUTMANAGERIMPL_H |
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