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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 QDECLARATIVEANCHORS_P_H |
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43 #define QDECLARATIVEANCHORS_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/qdeclarativeanchors_p.h" |
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57 #include "private/qdeclarativeitemchangelistener_p.h" |
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58 #include <private/qobject_p.h> |
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59 |
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60 QT_BEGIN_NAMESPACE |
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61 |
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62 class QDeclarativeAnchorLine |
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63 { |
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64 public: |
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65 QDeclarativeAnchorLine() : item(0), anchorLine(Invalid) {} |
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66 |
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67 enum AnchorLine { |
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68 Invalid = 0x0, |
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69 Left = 0x01, |
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70 Right = 0x02, |
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71 Top = 0x04, |
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72 Bottom = 0x08, |
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73 HCenter = 0x10, |
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74 VCenter = 0x20, |
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75 Baseline = 0x40, |
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76 Horizontal_Mask = Left | Right | HCenter, |
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77 Vertical_Mask = Top | Bottom | VCenter | Baseline |
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78 }; |
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79 |
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80 QGraphicsObject *item; |
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81 AnchorLine anchorLine; |
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82 }; |
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83 |
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84 inline bool operator==(const QDeclarativeAnchorLine& a, const QDeclarativeAnchorLine& b) |
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85 { |
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86 return a.item == b.item && a.anchorLine == b.anchorLine; |
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87 } |
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88 |
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89 class QDeclarativeAnchorsPrivate : public QObjectPrivate, public QDeclarativeItemChangeListener |
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90 { |
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91 Q_DECLARE_PUBLIC(QDeclarativeAnchors) |
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92 public: |
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93 QDeclarativeAnchorsPrivate(QGraphicsObject *i) |
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94 : componentComplete(true), updatingMe(false), updatingHorizontalAnchor(0), |
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95 updatingVerticalAnchor(0), updatingFill(0), updatingCenterIn(0), item(i), usedAnchors(0), fill(0), |
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96 centerIn(0), leftMargin(0), rightMargin(0), topMargin(0), bottomMargin(0), |
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97 margins(0), vCenterOffset(0), hCenterOffset(0), baselineOffset(0) |
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98 { |
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99 } |
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100 |
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101 void clearItem(QGraphicsObject *); |
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102 |
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103 void addDepend(QGraphicsObject *); |
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104 void remDepend(QGraphicsObject *); |
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105 bool isItemComplete() const; |
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106 |
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107 bool componentComplete:1; |
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108 bool updatingMe:1; |
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109 uint updatingHorizontalAnchor:2; |
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110 uint updatingVerticalAnchor:2; |
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111 uint updatingFill:2; |
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112 uint updatingCenterIn:2; |
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113 |
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114 void setItemHeight(qreal); |
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115 void setItemWidth(qreal); |
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116 void setItemX(qreal); |
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117 void setItemY(qreal); |
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118 void setItemPos(const QPointF &); |
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119 void setItemSize(const QSizeF &); |
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120 |
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121 void updateOnComplete(); |
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122 void updateMe(); |
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123 |
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124 // QDeclarativeItemGeometryListener interface |
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125 void itemGeometryChanged(QDeclarativeItem *, const QRectF &, const QRectF &); |
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126 void _q_widgetDestroyed(QObject *); |
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127 void _q_widgetGeometryChanged(); |
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128 QDeclarativeAnchorsPrivate *anchorPrivate() { return this; } |
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129 |
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130 bool checkHValid() const; |
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131 bool checkVValid() const; |
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132 bool checkHAnchorValid(QDeclarativeAnchorLine anchor) const; |
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133 bool checkVAnchorValid(QDeclarativeAnchorLine anchor) const; |
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134 bool calcStretch(const QDeclarativeAnchorLine &edge1, const QDeclarativeAnchorLine &edge2, int offset1, int offset2, QDeclarativeAnchorLine::AnchorLine line, int &stretch); |
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135 |
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136 void updateHorizontalAnchors(); |
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137 void updateVerticalAnchors(); |
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138 void fillChanged(); |
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139 void centerInChanged(); |
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140 |
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141 QGraphicsObject *item; |
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142 QDeclarativeAnchors::Anchors usedAnchors; |
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143 |
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144 QGraphicsObject *fill; |
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145 QGraphicsObject *centerIn; |
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146 |
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147 QDeclarativeAnchorLine left; |
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148 QDeclarativeAnchorLine right; |
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149 QDeclarativeAnchorLine top; |
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150 QDeclarativeAnchorLine bottom; |
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151 QDeclarativeAnchorLine vCenter; |
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152 QDeclarativeAnchorLine hCenter; |
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153 QDeclarativeAnchorLine baseline; |
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154 |
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155 qreal leftMargin; |
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156 qreal rightMargin; |
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157 qreal topMargin; |
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158 qreal bottomMargin; |
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159 qreal margins; |
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160 qreal vCenterOffset; |
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161 qreal hCenterOffset; |
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162 qreal baselineOffset; |
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163 }; |
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164 |
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165 QT_END_NAMESPACE |
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166 |
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167 Q_DECLARE_METATYPE(QDeclarativeAnchorLine) |
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168 |
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169 #endif |