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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