1 | // Copyright (C) 2021 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQUICKITEMCHANGELISTENER_P_H |
5 | #define QQUICKITEMCHANGELISTENER_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <QtQuick/private/qtquickglobal_p.h> |
19 | |
20 | QT_BEGIN_NAMESPACE |
21 | |
22 | class QRectF; |
23 | class QQuickItem; |
24 | class QQuickAnchorsPrivate; |
25 | |
26 | class QQuickGeometryChange |
27 | { |
28 | public: |
29 | enum Kind: int { |
30 | Nothing = 0x00, |
31 | X = 0x01, |
32 | Y = 0x02, |
33 | Width = 0x04, |
34 | Height = 0x08, |
35 | |
36 | Size = Width | Height, |
37 | All = X | Y | Size |
38 | }; |
39 | |
40 | QQuickGeometryChange(int change = Nothing) |
41 | : kind(change) |
42 | {} |
43 | |
44 | bool noChange() const { return kind == Nothing; } |
45 | bool anyChange() const { return !noChange(); } |
46 | |
47 | bool xChange() const { return kind & X; } |
48 | bool yChange() const { return kind & Y; } |
49 | bool widthChange() const { return kind & Width; } |
50 | bool heightChange() const { return kind & Height; } |
51 | |
52 | bool positionChange() const { return xChange() || yChange(); } |
53 | bool sizeChange() const { return widthChange() || heightChange(); } |
54 | |
55 | bool horizontalChange() const { return xChange() || widthChange(); } |
56 | bool verticalChange() const { return yChange() || heightChange(); } |
57 | |
58 | void setXChange(bool enabled) { set(bits: X, enabled); } |
59 | void setYChange(bool enabled) { set(bits: Y, enabled); } |
60 | void setWidthChange(bool enabled) { set(bits: Width, enabled); } |
61 | void setHeightChange(bool enabled) { set(bits: Height, enabled); } |
62 | void setSizeChange(bool enabled) { set(bits: Size, enabled); } |
63 | void setAllChanged(bool enabled) { set(bits: All, enabled); } |
64 | void setHorizontalChange(bool enabled) { set(bits: X | Width, enabled); } |
65 | void setVerticalChange(bool enabled) { set(bits: Y | Height, enabled); } |
66 | |
67 | void set(int bits, bool enabled) |
68 | { |
69 | if (enabled) { |
70 | kind |= bits; |
71 | } else { |
72 | kind &= ~bits; |
73 | } |
74 | } |
75 | |
76 | bool matches(QQuickGeometryChange other) const { return kind & other.kind; } |
77 | |
78 | private: |
79 | int kind; |
80 | }; |
81 | |
82 | #define QT_QUICK_NEW_GEOMETRY_CHANGED_HANDLING |
83 | |
84 | class Q_QUICK_PRIVATE_EXPORT QQuickItemChangeListener |
85 | { |
86 | public: |
87 | virtual ~QQuickItemChangeListener(); |
88 | |
89 | virtual void itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF & /* oldGeometry */) {} |
90 | virtual void itemSiblingOrderChanged(QQuickItem *) {} |
91 | virtual void itemVisibilityChanged(QQuickItem *) {} |
92 | virtual void itemEnabledChanged(QQuickItem *) {} |
93 | virtual void itemOpacityChanged(QQuickItem *) {} |
94 | virtual void itemDestroyed(QQuickItem *) {} |
95 | virtual void itemChildAdded(QQuickItem *, QQuickItem * /* child */ ) {} |
96 | virtual void itemChildRemoved(QQuickItem *, QQuickItem * /* child */ ) {} |
97 | virtual void itemParentChanged(QQuickItem *, QQuickItem * /* parent */ ) {} |
98 | virtual void itemRotationChanged(QQuickItem *) {} |
99 | virtual void itemImplicitWidthChanged(QQuickItem *) {} |
100 | virtual void itemImplicitHeightChanged(QQuickItem *) {} |
101 | virtual void itemFocusChanged(QQuickItem *, Qt::FocusReason /* reason */) {} |
102 | |
103 | virtual QQuickAnchorsPrivate *anchorPrivate() { return nullptr; } |
104 | }; |
105 | |
106 | QT_END_NAMESPACE |
107 | |
108 | #endif // QQUICKITEMCHANGELISTENER_P_H |
109 | |