1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQUICKITEMCHANGELISTENER_P_H
#define QQUICKITEMCHANGELISTENER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtQuick/private/qtquickglobal_p.h>
QT_BEGIN_NAMESPACE
class QRectF;
class QQuickItem;
class QQuickAnchorsPrivate;
class QQuickGeometryChange
{
public:
enum Kind: int {
Nothing = 0x00,
X = 0x01,
Y = 0x02,
Width = 0x04,
Height = 0x08,
Size = Width | Height,
All = X | Y | Size
};
QQuickGeometryChange(int change = Nothing)
: kind(change)
{}
bool noChange() const { return kind == Nothing; }
bool anyChange() const { return !noChange(); }
bool xChange() const { return kind & X; }
bool yChange() const { return kind & Y; }
bool widthChange() const { return kind & Width; }
bool heightChange() const { return kind & Height; }
bool positionChange() const { return xChange() || yChange(); }
bool sizeChange() const { return widthChange() || heightChange(); }
bool horizontalChange() const { return xChange() || widthChange(); }
bool verticalChange() const { return yChange() || heightChange(); }
void setXChange(bool enabled) { set(X, enabled); }
void setYChange(bool enabled) { set(Y, enabled); }
void setWidthChange(bool enabled) { set(Width, enabled); }
void setHeightChange(bool enabled) { set(Height, enabled); }
void setSizeChange(bool enabled) { set(Size, enabled); }
void setAllChanged(bool enabled) { set(All, enabled); }
void setHorizontalChange(bool enabled) { set(X | Width, enabled); }
void setVerticalChange(bool enabled) { set(Y | Height, enabled); }
void set(int bits, bool enabled)
{
if (enabled) {
kind |= bits;
} else {
kind &= ~bits;
}
}
bool matches(QQuickGeometryChange other) const { return kind & other.kind; }
private:
int kind;
};
#define QT_QUICK_NEW_GEOMETRY_CHANGED_HANDLING
class Q_QUICK_EXPORT QQuickItemChangeListener
{
public:
virtual ~QQuickItemChangeListener();
virtual void itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF & /* oldGeometry */) {}
virtual void itemSiblingOrderChanged(QQuickItem *) {}
virtual void itemVisibilityChanged(QQuickItem *) {}
virtual void itemEnabledChanged(QQuickItem *) {}
virtual void itemOpacityChanged(QQuickItem *) {}
virtual void itemDestroyed(QQuickItem *) {}
virtual void itemChildAdded(QQuickItem *, QQuickItem * /* child */ ) {}
virtual void itemChildRemoved(QQuickItem *, QQuickItem * /* child */ ) {}
virtual void itemParentChanged(QQuickItem *, QQuickItem * /* parent */ ) {}
virtual void itemRotationChanged(QQuickItem *) {}
virtual void itemImplicitWidthChanged(QQuickItem *) {}
virtual void itemImplicitHeightChanged(QQuickItem *) {}
virtual void itemFocusChanged(QQuickItem *, Qt::FocusReason /* reason */) {}
virtual QQuickAnchorsPrivate *anchorPrivate() { return nullptr; }
};
QT_END_NAMESPACE
#endif // QQUICKITEMCHANGELISTENER_P_H
|
