File indexing completed on 2022-11-22 12:51:02

0001 /*
0002 
0003     SPDX-FileCopyrightText: 2010 Nokia Corporation and /or its subsidiary(-ies) <qt-info@nokia.com>
0004 
0005     This file is part of the QtCore module of the Qt Toolkit.
0006 
0007     SPDX-License-Identifier: BSD-3-Clause
0008 
0009 */
0010 
0011 #ifndef STATEMACHINE_H
0012 #define STATEMACHINE_H
0013 
0014 #include <QAbstractAnimation>
0015 #include <QAbstractTransition>
0016 #include <QEvent>
0017 #include <QState>
0018 #include <QStateMachine>
0019 
0020 class StateSwitchEvent : public QEvent
0021 {
0022 public:
0023     StateSwitchEvent()
0024         : QEvent(Type(StateSwitchType))
0025     {
0026     }
0027 
0028     StateSwitchEvent(int id)
0029         : QEvent(Type(StateSwitchType))
0030         , m_id(id)
0031     {
0032     }
0033 
0034     enum { StateSwitchType = QEvent::User + 256 };
0035 
0036     int id() const
0037     {
0038         return m_id;
0039     }
0040 
0041 private:
0042     int m_id;
0043 };
0044 
0045 class StateSwitchTransition : public QAbstractTransition
0046 {
0047 public:
0048     StateSwitchTransition(int id)
0049         : QAbstractTransition()
0050         , m_id(id)
0051     {
0052     }
0053 
0054 protected:
0055     bool eventTest(QEvent *event) override
0056     {
0057         return (event->type() == QEvent::Type(StateSwitchEvent::StateSwitchType)) && (static_cast<StateSwitchEvent *>(event)->id() == m_id);
0058     }
0059 
0060     void onTransition(QEvent *) override
0061     {
0062     }
0063 
0064 private:
0065     int m_id;
0066 };
0067 
0068 class StateSwitcher : public QState
0069 {
0070 public:
0071     explicit StateSwitcher(QStateMachine *machine);
0072 
0073     void addState(QState *state, QAbstractAnimation *animation, int id);
0074 
0075     void switchToState(int n);
0076 };
0077 
0078 #endif // STATEMACHINE_H