1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the QtCore module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:LGPL$ |
9 | ** Commercial License Usage |
10 | ** Licensees holding valid commercial Qt licenses may use this file in |
11 | ** accordance with the commercial license agreement provided with the |
12 | ** Software or, alternatively, in accordance with the terms contained in |
13 | ** a written agreement between you and The Qt Company. For licensing terms |
14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
15 | ** information use the contact form at https://www.qt.io/contact-us. |
16 | ** |
17 | ** GNU Lesser General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
19 | ** General Public License version 3 as published by the Free Software |
20 | ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
21 | ** packaging of this file. Please review the following information to |
22 | ** ensure the GNU Lesser General Public License version 3 requirements |
23 | ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
24 | ** |
25 | ** GNU General Public License Usage |
26 | ** Alternatively, this file may be used under the terms of the GNU |
27 | ** General Public License version 2.0 or (at your option) the GNU General |
28 | ** Public license version 3 or any later version approved by the KDE Free |
29 | ** Qt Foundation. The licenses are as published by the Free Software |
30 | ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
31 | ** included in the packaging of this file. Please review the following |
32 | ** information to ensure the GNU General Public License requirements will |
33 | ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
34 | ** https://www.gnu.org/licenses/gpl-3.0.html. |
35 | ** |
36 | ** $QT_END_LICENSE$ |
37 | ** |
38 | ****************************************************************************/ |
39 | |
40 | #ifndef QABSTRACTTRANSITION_H |
41 | #define QABSTRACTTRANSITION_H |
42 | |
43 | #include <QtCore/qobject.h> |
44 | |
45 | #include <QtCore/qlist.h> |
46 | |
47 | QT_REQUIRE_CONFIG(statemachine); |
48 | |
49 | QT_BEGIN_NAMESPACE |
50 | |
51 | class QEvent; |
52 | class QAbstractState; |
53 | class QState; |
54 | class QStateMachine; |
55 | |
56 | #if QT_CONFIG(animation) |
57 | class QAbstractAnimation; |
58 | #endif |
59 | |
60 | class QAbstractTransitionPrivate; |
61 | class Q_CORE_EXPORT QAbstractTransition : public QObject |
62 | { |
63 | Q_OBJECT |
64 | Q_PROPERTY(QState* sourceState READ sourceState) |
65 | Q_PROPERTY(QAbstractState* targetState READ targetState WRITE setTargetState NOTIFY targetStateChanged) |
66 | Q_PROPERTY(QList<QAbstractState*> targetStates READ targetStates WRITE setTargetStates NOTIFY targetStatesChanged) |
67 | Q_PROPERTY(TransitionType transitionType READ transitionType WRITE setTransitionType REVISION 1) |
68 | public: |
69 | enum TransitionType { |
70 | ExternalTransition, |
71 | InternalTransition |
72 | }; |
73 | Q_ENUM(TransitionType) |
74 | |
75 | QAbstractTransition(QState *sourceState = nullptr); |
76 | virtual ~QAbstractTransition(); |
77 | |
78 | QState *sourceState() const; |
79 | QAbstractState *targetState() const; |
80 | void setTargetState(QAbstractState* target); |
81 | QList<QAbstractState*> targetStates() const; |
82 | void setTargetStates(const QList<QAbstractState*> &targets); |
83 | |
84 | TransitionType transitionType() const; |
85 | void setTransitionType(TransitionType type); |
86 | |
87 | QStateMachine *machine() const; |
88 | |
89 | #if QT_CONFIG(animation) |
90 | void addAnimation(QAbstractAnimation *animation); |
91 | void removeAnimation(QAbstractAnimation *animation); |
92 | QList<QAbstractAnimation*> animations() const; |
93 | #endif |
94 | |
95 | Q_SIGNALS: |
96 | void triggered(QPrivateSignal); |
97 | void targetStateChanged(QPrivateSignal); |
98 | void targetStatesChanged(QPrivateSignal); |
99 | |
100 | protected: |
101 | virtual bool eventTest(QEvent *event) = 0; |
102 | |
103 | virtual void onTransition(QEvent *event) = 0; |
104 | |
105 | bool event(QEvent *e) override; |
106 | |
107 | protected: |
108 | QAbstractTransition(QAbstractTransitionPrivate &dd, QState *parent); |
109 | |
110 | private: |
111 | Q_DISABLE_COPY(QAbstractTransition) |
112 | Q_DECLARE_PRIVATE(QAbstractTransition) |
113 | }; |
114 | |
115 | QT_END_NAMESPACE |
116 | |
117 | #endif |
118 | |