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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtDeclarative module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #ifndef QDECLARATIVELAYOUTS_P_H |
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43 #define QDECLARATIVELAYOUTS_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists purely as an |
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50 // implementation detail. This header file may change from version to |
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51 // version without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include "private/qdeclarativepositioners_p.h" |
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57 |
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58 #include "private/qdeclarativeitem_p.h" |
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59 |
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60 #include <qdeclarativestate_p.h> |
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61 #include <qdeclarativetransitionmanager_p_p.h> |
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62 #include <qdeclarativestateoperations_p.h> |
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63 |
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64 #include <QtCore/QObject> |
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65 #include <QtCore/QString> |
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66 #include <QtCore/QTimer> |
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67 #include <QDebug> |
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68 |
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69 QT_BEGIN_NAMESPACE |
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70 class QDeclarativeBasePositionerPrivate : public QDeclarativeItemPrivate, public QDeclarativeItemChangeListener |
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71 { |
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72 Q_DECLARE_PUBLIC(QDeclarativeBasePositioner) |
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73 |
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74 public: |
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75 QDeclarativeBasePositionerPrivate() |
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76 : spacing(0), type(QDeclarativeBasePositioner::None) |
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77 , moveTransition(0), addTransition(0), queuedPositioning(false) |
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78 , doingPositioning(false), anchorConflict(false) |
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79 { |
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80 } |
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81 |
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82 void init(QDeclarativeBasePositioner::PositionerType at) |
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83 { |
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84 type = at; |
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85 } |
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86 |
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87 int spacing; |
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88 |
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89 QDeclarativeBasePositioner::PositionerType type; |
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90 QDeclarativeTransition *moveTransition; |
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91 QDeclarativeTransition *addTransition; |
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92 QDeclarativeStateOperation::ActionList addActions; |
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93 QDeclarativeStateOperation::ActionList moveActions; |
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94 QDeclarativeTransitionManager addTransitionManager; |
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95 QDeclarativeTransitionManager moveTransitionManager; |
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96 |
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97 void watchChanges(QDeclarativeItem *other); |
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98 void unwatchChanges(QDeclarativeItem* other); |
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99 bool queuedPositioning : 1; |
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100 bool doingPositioning : 1; |
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101 bool anchorConflict : 1; |
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102 |
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103 virtual void itemSiblingOrderChanged(QDeclarativeItem* other) |
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104 { |
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105 Q_Q(QDeclarativeBasePositioner); |
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106 Q_UNUSED(other); |
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107 if(!queuedPositioning){ |
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108 //Delay is due to many children often being reordered at once |
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109 //And we only want to reposition them all once |
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110 QTimer::singleShot(0,q,SLOT(prePositioning())); |
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111 queuedPositioning = true; |
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112 } |
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113 } |
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114 |
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115 void itemGeometryChanged(QDeclarativeItem *, const QRectF &newGeometry, const QRectF &oldGeometry) |
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116 { |
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117 Q_Q(QDeclarativeBasePositioner); |
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118 if (newGeometry.size() != oldGeometry.size()) |
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119 q->prePositioning(); |
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120 } |
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121 virtual void itemVisibilityChanged(QDeclarativeItem *) |
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122 { |
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123 Q_Q(QDeclarativeBasePositioner); |
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124 q->prePositioning(); |
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125 } |
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126 virtual void itemOpacityChanged(QDeclarativeItem *) |
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127 { |
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128 Q_Q(QDeclarativeBasePositioner); |
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129 q->prePositioning(); |
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130 } |
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131 |
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132 void itemDestroyed(QDeclarativeItem *item) |
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133 { |
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134 Q_Q(QDeclarativeBasePositioner); |
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135 q->positionedItems.removeOne(QDeclarativeBasePositioner::PositionedItem(item)); |
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136 } |
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137 }; |
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138 |
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139 QT_END_NAMESPACE |
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140 #endif |