1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtDeclarative module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 2.1 or version 3 as published by the Free 20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and 21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the 22 ** following information to ensure the GNU Lesser General Public License 23 ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and 24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 25 ** 26 ** As a special exception, The Qt Company gives you certain additional 27 ** rights. These rights are described in The Qt Company LGPL Exception 28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. 29 ** 30 ** GNU General Public License Usage 31 ** Alternatively, this file may be used under the terms of the GNU 32 ** General Public License version 3.0 as published by the Free Software 33 ** Foundation and appearing in the file LICENSE.GPL included in the 34 ** packaging of this file. Please review the following information to 35 ** ensure the GNU General Public License version 3.0 requirements will be 36 ** met: http://www.gnu.org/copyleft/gpl.html. 37 ** 38 ** $QT_END_LICENSE$ 39 ** 40 ****************************************************************************/ 41 42 #ifndef QDECLARATIVEANCHORS_P_H 43 #define QDECLARATIVEANCHORS_P_H 44 45 // 46 // W A R N I N G 47 // ------------- 48 // 49 // This file is not part of the Qt API. It exists purely as an 50 // implementation detail. This header file may change from version to 51 // version without notice, or even be removed. 52 // 53 // We mean it. 54 // 55 56 #include "private/qdeclarativeanchors_p.h" 57 #include "private/qdeclarativeitemchangelistener_p.h" 58 #include <private/qobject_p.h> 59 60 QT_BEGIN_NAMESPACE 61 62 class QDeclarativeAnchorLine 63 { 64 public: QDeclarativeAnchorLine()65 QDeclarativeAnchorLine() : item(0), anchorLine(Invalid) {} 66 67 enum AnchorLine { 68 Invalid = 0x0, 69 Left = 0x01, 70 Right = 0x02, 71 Top = 0x04, 72 Bottom = 0x08, 73 HCenter = 0x10, 74 VCenter = 0x20, 75 Baseline = 0x40, 76 Horizontal_Mask = Left | Right | HCenter, 77 Vertical_Mask = Top | Bottom | VCenter | Baseline 78 }; 79 80 QGraphicsObject *item; 81 AnchorLine anchorLine; 82 }; 83 84 inline bool operator==(const QDeclarativeAnchorLine& a, const QDeclarativeAnchorLine& b) 85 { 86 return a.item == b.item && a.anchorLine == b.anchorLine; 87 } 88 89 class QDeclarativeAnchorsPrivate : public QObjectPrivate, public QDeclarativeItemChangeListener 90 { Q_DECLARE_PUBLIC(QDeclarativeAnchors)91 Q_DECLARE_PUBLIC(QDeclarativeAnchors) 92 public: 93 QDeclarativeAnchorsPrivate(QGraphicsObject *i) 94 : componentComplete(true), updatingMe(false), updatingHorizontalAnchor(0), 95 updatingVerticalAnchor(0), updatingFill(0), updatingCenterIn(0), item(i), usedAnchors(0), fill(0), 96 centerIn(0), leftMargin(0), rightMargin(0), topMargin(0), bottomMargin(0), 97 margins(0), vCenterOffset(0), hCenterOffset(0), baselineOffset(0) 98 { 99 } 100 101 void clearItem(QGraphicsObject *); 102 103 void addDepend(QGraphicsObject *); 104 void remDepend(QGraphicsObject *); 105 bool isItemComplete() const; 106 107 bool componentComplete:1; 108 bool updatingMe:1; 109 uint updatingHorizontalAnchor:2; 110 uint updatingVerticalAnchor:2; 111 uint updatingFill:2; 112 uint updatingCenterIn:2; 113 114 void setItemHeight(qreal); 115 void setItemWidth(qreal); 116 void setItemX(qreal); 117 void setItemY(qreal); 118 void setItemPos(const QPointF &); 119 void setItemSize(const QSizeF &); 120 121 void updateOnComplete(); 122 void updateMe(); 123 124 // QDeclarativeItemGeometryListener interface 125 void itemGeometryChanged(QDeclarativeItem *, const QRectF &, const QRectF &); 126 void _q_widgetDestroyed(QObject *); 127 void _q_widgetGeometryChanged(); anchorPrivate()128 QDeclarativeAnchorsPrivate *anchorPrivate() { return this; } 129 130 bool checkHValid() const; 131 bool checkVValid() const; 132 bool checkHAnchorValid(QDeclarativeAnchorLine anchor) const; 133 bool checkVAnchorValid(QDeclarativeAnchorLine anchor) const; 134 bool calcStretch(const QDeclarativeAnchorLine &edge1, const QDeclarativeAnchorLine &edge2, qreal offset1, qreal offset2, QDeclarativeAnchorLine::AnchorLine line, qreal &stretch); 135 136 bool isMirrored() const; 137 void updateHorizontalAnchors(); 138 void updateVerticalAnchors(); 139 void fillChanged(); 140 void centerInChanged(); 141 142 QGraphicsObject *item; 143 QDeclarativeAnchors::Anchors usedAnchors; 144 145 QGraphicsObject *fill; 146 QGraphicsObject *centerIn; 147 148 QDeclarativeAnchorLine left; 149 QDeclarativeAnchorLine right; 150 QDeclarativeAnchorLine top; 151 QDeclarativeAnchorLine bottom; 152 QDeclarativeAnchorLine vCenter; 153 QDeclarativeAnchorLine hCenter; 154 QDeclarativeAnchorLine baseline; 155 156 qreal leftMargin; 157 qreal rightMargin; 158 qreal topMargin; 159 qreal bottomMargin; 160 qreal margins; 161 qreal vCenterOffset; 162 qreal hCenterOffset; 163 qreal baselineOffset; 164 }; 165 166 QT_END_NAMESPACE 167 168 Q_DECLARE_METATYPE(QDeclarativeAnchorLine) 169 170 #endif 171