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qeventtransition.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
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6** This file is part of the QtCore module of the Qt Toolkit.-
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38****************************************************************************/-
39-
40#include "qeventtransition.h"-
41-
42#ifndef QT_NO_STATEMACHINE-
43-
44#include "qeventtransition_p.h"-
45#include "qstate.h"-
46#include "qstate_p.h"-
47#include "qstatemachine.h"-
48#include "qstatemachine_p.h"-
49#include <qdebug.h>-
50-
51QT_BEGIN_NAMESPACE-
52-
53/*!-
54 \class QEventTransition-
55 \inmodule QtCore-
56-
57 \brief The QEventTransition class provides a QObject-specific transition for Qt events.-
58-
59 \since 4.6-
60 \ingroup statemachine-
61-
62 A QEventTransition object binds an event to a particular QObject.-
63 QEventTransition is part of \l{The State Machine Framework}.-
64-
65 Example:-
66-
67 \code-
68 QPushButton *button = ...;-
69 QState *s1 = ...;-
70 QState *s2 = ...;-
71 // If in s1 and the button receives an Enter event, transition to s2-
72 QEventTransition *enterTransition = new QEventTransition(button, QEvent::Enter);-
73 enterTransition->setTargetState(s2);-
74 s1->addTransition(enterTransition);-
75 // If in s2 and the button receives an Exit event, transition back to s1-
76 QEventTransition *leaveTransition = new QEventTransition(button, QEvent::Leave);-
77 leaveTransition->setTargetState(s1);-
78 s2->addTransition(leaveTransition);-
79 \endcode-
80-
81 \section1 Subclassing-
82-
83 When reimplementing the eventTest() function, you should first call the base-
84 implementation to verify that the event is a QStateMachine::WrappedEvent for-
85 the proper object and event type. You may then cast the event to a-
86 QStateMachine::WrappedEvent and get the original event by calling-
87 QStateMachine::WrappedEvent::event(), and perform additional checks on that-
88 object.-
89-
90 \sa QState::addTransition()-
91*/-
92-
93/*!-
94 \property QEventTransition::eventSource-
95-
96 \brief the event source that this event transition is associated with-
97*/-
98-
99/*!-
100 \property QEventTransition::eventType-
101-
102 \brief the type of event that this event transition is associated with-
103*/-
104QEventTransitionPrivate::QEventTransitionPrivate()-
105{-
106 object = 0;-
107 eventType = QEvent::None;-
108 registered = false;-
109}
executed 18 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
18
110-
111QEventTransitionPrivate::~QEventTransitionPrivate()-
112{-
113}-
114-
115void QEventTransitionPrivate::unregister()-
116{-
117 Q_Q(QEventTransition);-
118 if (!registered || !machine())
!registeredDescription
TRUEevaluated 10 times by 1 test
Evaluated by:
  • tst_QStateMachine
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QStateMachine
!machine()Description
TRUEnever evaluated
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QStateMachine
0-10
119 return;
executed 10 times by 1 test: return;
Executed by:
  • tst_QStateMachine
10
120 QStateMachinePrivate::get(machine())->unregisterEventTransition(q);-
121}
executed 3 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
3
122-
123void QEventTransitionPrivate::maybeRegister()-
124{-
125 Q_Q(QEventTransition);-
126 if (QStateMachine *mach = machine())
QStateMachine ...ch = machine()Description
TRUEevaluated 7 times by 1 test
Evaluated by:
  • tst_QStateMachine
FALSEevaluated 18 times by 1 test
Evaluated by:
  • tst_QStateMachine
7-18
127 QStateMachinePrivate::get(mach)->maybeRegisterEventTransition(q);
executed 7 times by 1 test: QStateMachinePrivate::get(mach)->maybeRegisterEventTransition(q);
Executed by:
  • tst_QStateMachine
7
128}
executed 25 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
25
129-
130/*!-
131 Constructs a new QEventTransition object with the given \a sourceState.-
132*/-
133QEventTransition::QEventTransition(QState *sourceState)-
134 : QAbstractTransition(*new QEventTransitionPrivate, sourceState)-
135{-
136}
executed 4 times by 2 tests: end of block
Executed by:
  • tst_QState
  • tst_QStateMachine
4
137-
138/*!-
139 Constructs a new QEventTransition object associated with events of the given-
140 \a type for the given \a object, and with the given \a sourceState.-
141*/-
142QEventTransition::QEventTransition(QObject *object, QEvent::Type type,-
143 QState *sourceState)-
144 : QAbstractTransition(*new QEventTransitionPrivate, sourceState)-
145{-
146 Q_D(QEventTransition);-
147 d->registered = false;-
148 d->object = object;-
149 d->eventType = type;-
150 d->maybeRegister();-
151}
executed 10 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
10
152-
153/*!-
154 \internal-
155*/-
156QEventTransition::QEventTransition(QEventTransitionPrivate &dd, QState *parent)-
157 : QAbstractTransition(dd, parent)-
158{-
159}
executed 2 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
2
160-
161/*!-
162 \internal-
163*/-
164QEventTransition::QEventTransition(QEventTransitionPrivate &dd, QObject *object,-
165 QEvent::Type type, QState *parent)-
166 : QAbstractTransition(dd, parent)-
167{-
168 Q_D(QEventTransition);-
169 d->registered = false;-
170 d->object = object;-
171 d->eventType = type;-
172 d->maybeRegister();-
173}
executed 2 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
2
174-
175/*!-
176 Destroys this QObject event transition.-
177*/-
178QEventTransition::~QEventTransition()-
179{-
180}-
181-
182/*!-
183 Returns the event type that this event transition is associated with.-
184*/-
185QEvent::Type QEventTransition::eventType() const-
186{-
187 Q_D(const QEventTransition);-
188 return d->eventType;
executed 120 times by 1 test: return d->eventType;
Executed by:
  • tst_QStateMachine
120
189}-
190-
191/*!-
192 Sets the event \a type that this event transition is associated with.-
193*/-
194void QEventTransition::setEventType(QEvent::Type type)-
195{-
196 Q_D(QEventTransition);-
197 if (d->eventType == type)
d->eventType == typeDescription
TRUEnever evaluated
FALSEevaluated 7 times by 1 test
Evaluated by:
  • tst_QStateMachine
0-7
198 return;
never executed: return;
0
199 d->unregister();-
200 d->eventType = type;-
201 d->maybeRegister();-
202}
executed 7 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
7
203-
204/*!-
205 Returns the event source associated with this event transition.-
206*/-
207QObject *QEventTransition::eventSource() const-
208{-
209 Q_D(const QEventTransition);-
210 return d->object;
executed 5 times by 1 test: return d->object;
Executed by:
  • tst_QStateMachine
5
211}-
212-
213/*!-
214 Sets the event source associated with this event transition to be the given-
215 \a object.-
216*/-
217void QEventTransition::setEventSource(QObject *object)-
218{-
219 Q_D(QEventTransition);-
220 if (d->object == object)
d->object == objectDescription
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • tst_QStateMachine
0-6
221 return;
never executed: return;
0
222 d->unregister();-
223 d->object = object;-
224 d->maybeRegister();-
225}
executed 6 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
6
226-
227/*!-
228 \reimp-
229*/-
230bool QEventTransition::eventTest(QEvent *event)-
231{-
232 Q_D(const QEventTransition);-
233 if (event->type() == QEvent::StateMachineWrapped) {
event->type() ...MachineWrappedDescription
TRUEevaluated 21 times by 1 test
Evaluated by:
  • tst_QStateMachine
FALSEevaluated 42 times by 1 test
Evaluated by:
  • tst_QStateMachine
21-42
234 QStateMachine::WrappedEvent *we = static_cast<QStateMachine::WrappedEvent*>(event);-
235 return (we->object() == d->object)
executed 21 times by 1 test: return (we->object() == d->object) && (we->event()->type() == d->eventType);
Executed by:
  • tst_QStateMachine
21
236 && (we->event()->type() == d->eventType);
executed 21 times by 1 test: return (we->object() == d->object) && (we->event()->type() == d->eventType);
Executed by:
  • tst_QStateMachine
21
237 }-
238 return false;
executed 42 times by 1 test: return false;
Executed by:
  • tst_QStateMachine
42
239}-
240-
241/*!-
242 \reimp-
243*/-
244void QEventTransition::onTransition(QEvent *event)-
245{-
246 Q_UNUSED(event);-
247}
executed 20 times by 1 test: end of block
Executed by:
  • tst_QStateMachine
20
248-
249/*!-
250 \reimp-
251*/-
252bool QEventTransition::event(QEvent *e)-
253{-
254 return QAbstractTransition::event(e);
never executed: return QAbstractTransition::event(e);
0
255}-
256-
257QT_END_NAMESPACE-
258-
259#endif //QT_NO_STATEMACHINE-
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