1 // Commit: 2c7cab4172f1acc86fd49345a2847417e162f2c3
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43 #ifndef QSGANCHORS_P_P_H
44 #define QSGANCHORS_P_P_H
50 // This file is not part of the Qt API. It exists purely as an
51 // implementation detail. This header file may change from version to
52 // version without notice, or even be removed.
57 #include "qsganchors_p.h"
58 #include "qsgitemchangelistener_p.h"
59 #include <private/qobject_p.h>
66 QSGAnchorLine() : item(0), anchorLine(Invalid) {}
77 Horizontal_Mask = Left | Right | HCenter,
78 Vertical_Mask = Top | Bottom | VCenter | Baseline
82 AnchorLine anchorLine;
85 inline bool operator==(const QSGAnchorLine& a, const QSGAnchorLine& b)
87 return a.item == b.item && a.anchorLine == b.anchorLine;
90 class QSGAnchorsPrivate : public QObjectPrivate, public QSGItemChangeListener
92 Q_DECLARE_PUBLIC(QSGAnchors)
94 QSGAnchorsPrivate(QSGItem *i)
95 : componentComplete(true), updatingMe(false), updatingHorizontalAnchor(0),
96 updatingVerticalAnchor(0), updatingFill(0), updatingCenterIn(0), item(i), usedAnchors(0), fill(0),
97 centerIn(0), leftMargin(0), rightMargin(0), topMargin(0), bottomMargin(0),
98 margins(0), vCenterOffset(0), hCenterOffset(0), baselineOffset(0)
102 void clearItem(QSGItem *);
104 void addDepend(QSGItem *);
105 void remDepend(QSGItem *);
106 bool isItemComplete() const;
108 bool componentComplete:1;
110 uint updatingHorizontalAnchor:2;
111 uint updatingVerticalAnchor:2;
113 uint updatingCenterIn:2;
115 void setItemHeight(qreal);
116 void setItemWidth(qreal);
117 void setItemX(qreal);
118 void setItemY(qreal);
119 void setItemPos(const QPointF &);
120 void setItemSize(const QSizeF &);
122 void updateOnComplete();
125 // QSGItemGeometryListener interface
126 void itemGeometryChanged(QSGItem *, const QRectF &, const QRectF &);
127 QSGAnchorsPrivate *anchorPrivate() { return this; }
129 bool checkHValid() const;
130 bool checkVValid() const;
131 bool checkHAnchorValid(QSGAnchorLine anchor) const;
132 bool checkVAnchorValid(QSGAnchorLine anchor) const;
133 bool calcStretch(const QSGAnchorLine &edge1, const QSGAnchorLine &edge2, qreal offset1, qreal offset2, QSGAnchorLine::AnchorLine line, qreal &stretch);
135 bool isMirrored() const;
136 void updateHorizontalAnchors();
137 void updateVerticalAnchors();
139 void centerInChanged();
142 QSGAnchors::Anchors usedAnchors;
150 QSGAnchorLine bottom;
151 QSGAnchorLine vCenter;
152 QSGAnchorLine hCenter;
153 QSGAnchorLine baseline;
162 qreal baselineOffset;
164 static inline QSGAnchorsPrivate *get(QSGAnchors *o) {
165 return static_cast<QSGAnchorsPrivate *>(QObjectPrivate::get(o));
171 Q_DECLARE_METATYPE(QSGAnchorLine)