1 | // Copyright (C) 2016 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 QQUICKITEMVIEWTRANSITION_P_P_H |
5 | #define QQUICKITEMVIEWTRANSITION_P_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_REQUIRE_CONFIG(quick_viewtransitions); |
21 | |
22 | #include <QtCore/qobject.h> |
23 | #include <QtCore/qpoint.h> |
24 | #include <QtQml/qqml.h> |
25 | #include <private/qqmlguard_p.h> |
26 | #include <private/qquicktransition_p.h> |
27 | #include <private/qanimationjobutil_p.h> |
28 | |
29 | #include <QtCore/qpointer.h> |
30 | |
31 | QT_BEGIN_NAMESPACE |
32 | |
33 | class QQuickItem; |
34 | class QQuickTransition; |
35 | class QQuickItemViewTransitionableItem; |
36 | class QQuickItemViewTransitionJob; |
37 | |
38 | |
39 | class Q_QUICK_EXPORT QQuickItemViewTransitionChangeListener |
40 | { |
41 | public: |
42 | QQuickItemViewTransitionChangeListener() {} |
43 | virtual ~QQuickItemViewTransitionChangeListener() {} |
44 | |
45 | virtual void viewItemTransitionFinished(QQuickItemViewTransitionableItem *item) = 0; |
46 | }; |
47 | |
48 | |
49 | class Q_QUICK_EXPORT QQuickItemViewTransitioner |
50 | { |
51 | public: |
52 | enum TransitionType { |
53 | NoTransition, |
54 | PopulateTransition, |
55 | AddTransition, |
56 | MoveTransition, |
57 | RemoveTransition |
58 | }; |
59 | |
60 | QQuickItemViewTransitioner(); |
61 | virtual ~QQuickItemViewTransitioner(); |
62 | |
63 | bool canTransition(QQuickItemViewTransitioner::TransitionType type, bool asTarget) const; |
64 | void transitionNextReposition(QQuickItemViewTransitionableItem *item, QQuickItemViewTransitioner::TransitionType type, bool isTarget); |
65 | |
66 | void addToTargetLists(QQuickItemViewTransitioner::TransitionType type, QQuickItemViewTransitionableItem *item, int index); |
67 | void resetTargetLists(); |
68 | |
69 | QQuickTransition *transitionObject(QQuickItemViewTransitioner::TransitionType type, bool asTarget) const; |
70 | const QList<int> &targetIndexes(QQuickItemViewTransitioner::TransitionType type) const; |
71 | const QList<QObject *> &targetItems(QQuickItemViewTransitioner::TransitionType type) const; |
72 | |
73 | inline void setPopulateTransitionEnabled(bool b) { usePopulateTransition = b; } |
74 | inline bool populateTransitionEnabled() const { return usePopulateTransition; } |
75 | |
76 | inline void setChangeListener(QQuickItemViewTransitionChangeListener *obj) { changeListener = obj; } |
77 | |
78 | QSet<QQuickItemViewTransitionJob *> runningJobs; |
79 | |
80 | QList<int> addTransitionIndexes; |
81 | QList<int> moveTransitionIndexes; |
82 | QList<int> removeTransitionIndexes; |
83 | QList<QObject *> addTransitionTargets; |
84 | QList<QObject *> moveTransitionTargets; |
85 | QList<QObject *> removeTransitionTargets; |
86 | |
87 | QQmlGuard<QQuickTransition> populateTransition; |
88 | QQmlGuard<QQuickTransition> addTransition; |
89 | QQmlGuard<QQuickTransition> addDisplacedTransition; |
90 | QQmlGuard<QQuickTransition> moveTransition; |
91 | QQmlGuard<QQuickTransition> moveDisplacedTransition; |
92 | QQmlGuard<QQuickTransition> removeTransition; |
93 | QQmlGuard<QQuickTransition> removeDisplacedTransition; |
94 | QQmlGuard<QQuickTransition> displacedTransition; |
95 | |
96 | private: |
97 | friend class QQuickItemViewTransitionJob; |
98 | |
99 | QQuickItemViewTransitionChangeListener *changeListener; |
100 | bool usePopulateTransition; |
101 | |
102 | void finishedTransition(QQuickItemViewTransitionJob *job, QQuickItemViewTransitionableItem *item); |
103 | }; |
104 | |
105 | |
106 | /* |
107 | An item that can be transitioned using QQuickViewTransitionJob. |
108 | */ |
109 | class Q_QUICK_EXPORT QQuickItemViewTransitionableItem |
110 | { |
111 | public: |
112 | QQuickItemViewTransitionableItem(QQuickItem *i); |
113 | virtual ~QQuickItemViewTransitionableItem(); |
114 | |
115 | qreal itemX() const; |
116 | qreal itemY() const; |
117 | |
118 | void moveTo(const QPointF &pos, bool immediate = false); |
119 | |
120 | bool transitionScheduledOrRunning() const; |
121 | bool transitionRunning() const; |
122 | bool isPendingRemoval() const; |
123 | |
124 | bool prepareTransition(QQuickItemViewTransitioner *transitioner, int index, const QRectF &viewBounds); |
125 | void startTransition(QQuickItemViewTransitioner *transitioner, int index); |
126 | void completeTransition(QQuickTransition *quickTransition); |
127 | |
128 | SelfDeletable m_selfDeletable; |
129 | QPointF nextTransitionTo; |
130 | QPointF lastMovedTo; |
131 | QPointF nextTransitionFrom; |
132 | QQuickItem *item; |
133 | QQuickItemViewTransitionJob *transition; |
134 | QQuickItemViewTransitioner::TransitionType nextTransitionType; |
135 | bool isTransitionTarget : 1; |
136 | bool nextTransitionToSet : 1; |
137 | bool nextTransitionFromSet : 1; |
138 | bool lastMovedToSet : 1; |
139 | bool prepared : 1; |
140 | |
141 | private: |
142 | friend class QQuickItemViewTransitioner; |
143 | friend class QQuickItemViewTransitionJob; |
144 | void setNextTransition(QQuickItemViewTransitioner::TransitionType, bool isTargetItem); |
145 | bool transitionWillChangePosition() const; |
146 | void finishedTransition(); |
147 | void resetNextTransitionPos(); |
148 | void clearCurrentScheduledTransition(); |
149 | void stopTransition(); |
150 | }; |
151 | |
152 | |
153 | class QQuickViewTransitionAttached : public QObject |
154 | { |
155 | Q_OBJECT |
156 | |
157 | Q_PROPERTY(int index READ index NOTIFY indexChanged FINAL) |
158 | Q_PROPERTY(QQuickItem* item READ item NOTIFY itemChanged FINAL) |
159 | Q_PROPERTY(QPointF destination READ destination NOTIFY destinationChanged FINAL) |
160 | |
161 | Q_PROPERTY(QList<int> targetIndexes READ targetIndexes NOTIFY targetIndexesChanged FINAL) |
162 | Q_PROPERTY(QQmlListProperty<QObject> targetItems READ targetItems NOTIFY targetItemsChanged FINAL) |
163 | |
164 | QML_NAMED_ELEMENT(ViewTransition) |
165 | QML_ADDED_IN_VERSION(2, 0) |
166 | QML_UNCREATABLE("ViewTransition is only available via attached properties.") |
167 | QML_ATTACHED(QQuickViewTransitionAttached) |
168 | |
169 | public: |
170 | QQuickViewTransitionAttached(QObject *parent); |
171 | |
172 | int index() const { return m_index; } |
173 | QQuickItem *item() const { return m_item; } |
174 | QPointF destination() const { return m_destination; } |
175 | |
176 | QList<int> targetIndexes() const { return m_targetIndexes; } |
177 | QQmlListProperty<QObject> targetItems(); |
178 | |
179 | static QQuickViewTransitionAttached *qmlAttachedProperties(QObject *); |
180 | |
181 | Q_SIGNALS: |
182 | void indexChanged(); |
183 | void itemChanged(); |
184 | void destinationChanged(); |
185 | |
186 | void targetIndexesChanged(); |
187 | void targetItemsChanged(); |
188 | |
189 | private: |
190 | friend class QQuickItemViewTransitionJob; |
191 | QPointF m_destination; |
192 | QList<int> m_targetIndexes; |
193 | QList<QObject *> m_targetItems; |
194 | |
195 | QPointer<QQuickItem> m_item; |
196 | int m_index; |
197 | }; |
198 | |
199 | QT_END_NAMESPACE |
200 | |
201 | #endif // QQUICKITEMVIEWTRANSITION_P_P_H |
202 |
Definitions
- QQuickItemViewTransitionChangeListener
- QQuickItemViewTransitionChangeListener
- ~QQuickItemViewTransitionChangeListener
- QQuickItemViewTransitioner
- TransitionType
- setPopulateTransitionEnabled
- populateTransitionEnabled
- setChangeListener
- QQuickItemViewTransitionableItem
- QQuickViewTransitionAttached
- index
- item
- destination
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