Qt 4.8
qgesturemanager_p.h
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41 
42 #ifndef QGESTUREMANAGER_P_H
43 #define QGESTUREMANAGER_P_H
44 
45 //
46 // W A R N I N G
47 // -------------
48 //
49 // This file is not part of the Qt API. It exists for the convenience
50 // of other Qt classes. This header file may change from version to
51 // version without notice, or even be removed.
52 //
53 // We mean it.
54 //
55 
56 #include "qobject.h"
57 #include "qbasictimer.h"
58 #include "private/qwidget_p.h"
59 #include "qgesturerecognizer.h"
60 
61 #ifndef QT_NO_GESTURES
62 
64 
65 class QBasicTimer;
66 class QGraphicsObject;
67 class QGestureManager : public QObject
68 {
69  Q_OBJECT
70 public:
73 
76 
77  bool filterEvent(QWidget *receiver, QEvent *event);
78  bool filterEvent(QObject *receiver, QEvent *event);
79 #ifndef QT_NO_GRAPHICSVIEW
80  bool filterEvent(QGraphicsObject *receiver, QEvent *event);
81 #endif //QT_NO_GRAPHICSVIEW
82 
83  static QGestureManager* instance(); // declared in qapplication.cpp
84 
85  void cleanupCachedGestures(QObject *target, Qt::GestureType type);
86 
87  void recycle(QGesture *gesture);
88 
89 protected:
91  QEvent *event);
92 
93 private:
95 
98 
99  enum State {
102  MaybeGesture // this means timers are up and waiting for some
103  // more events, and input events are handled by
104  // gesture recognizer explicitly
105  } state;
106 
108  {
111 
112  ObjectGesture(QObject *o, const Qt::GestureType &g) : object(o), gesture(g) { }
113  inline bool operator<(const ObjectGesture &rhs) const
114  {
115  if (object < rhs.object)
116  return true;
117  if (object == rhs.object)
118  return gesture < rhs.gesture;
119  return false;
120  }
121  };
122 
126 
128 
130 
135 
137  Qt::GestureType gesture);
138  void deliverEvents(const QSet<QGesture *> &gestures,
139  QSet<QGesture *> *undeliveredGestures);
140  void getGestureTargets(const QSet<QGesture*> &gestures,
141  QMap<QWidget *, QList<QGesture *> > *conflicts,
142  QMap<QWidget *, QList<QGesture *> > *normal);
143 
144  void cancelGesturesForChildren(QGesture *originatingGesture);
145 };
146 
148 
149 #endif // QT_NO_GESTURES
150 
151 #endif // QGESTUREMANAGER_P_H
The QMultiMap class is a convenience QMap subclass that provides multi-valued maps.
Definition: qcontainerfwd.h:59
int type
Definition: qmetatype.cpp:239
void recycle(QGesture *gesture)
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
QPointer< QWidget > widget
QMap< ObjectGesture, QList< QGesture * > > m_objectGestures
bool filterEvent(QWidget *receiver, QEvent *event)
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
QHash< QGestureRecognizer *, QSet< QGesture * > > m_obsoleteGestures
bool filterEventThroughContexts(const QMultiMap< QObject *, Qt::GestureType > &contexts, QEvent *event)
QHash< QGesture *, QGestureRecognizer * > m_deletedRecognizers
QGestureManager(QObject *parent)
The QHash class is a template class that provides a hash-table-based dictionary.
Definition: qdatastream.h:66
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
void cleanupCachedGestures(QObject *target, Qt::GestureType type)
void cleanupGesturesForRemovedRecognizer(QGesture *gesture)
virtual bool event(QEvent *)
This virtual function receives events to an object and should return true if the event e was recogniz...
Definition: qobject.cpp:1200
static QGestureManager * instance()
void deliverEvents(const QSet< QGesture *> &gestures, QSet< QGesture *> *undeliveredGestures)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
void unregisterGestureRecognizer(Qt::GestureType type)
QSet< QGesture * > m_gesturesToDelete
The State element defines configurations of objects and properties.
enum QGestureManager::State state
bool operator<(const ObjectGesture &rhs) const
GestureType
Definition: qnamespace.h:1759
void getGestureTargets(const QSet< QGesture *> &gestures, QMap< QWidget *, QList< QGesture *> > *conflicts, QMap< QWidget *, QList< QGesture *> > *normal)
#define Q_OBJECT
Definition: qobjectdefs.h:157
Qt::GestureType registerGestureRecognizer(QGestureRecognizer *recognizer)
QHash< QGesture *, QWidget * > m_gestureTargets
QHash< QGesture *, QGestureRecognizer * > m_gestureToRecognizer
QHash< QGesture *, QObject * > m_gestureOwners
The QGesture class represents a gesture, containing properties that describe the corresponding user i...
Definition: qgesture.h:64
QObject * parent() const
Returns a pointer to the parent object.
Definition: qobject.h:273
QGesture * getState(QObject *widget, QGestureRecognizer *recognizer, Qt::GestureType gesture)
QSet< QGesture * > m_activeGestures
The QGestureRecognizer class provides the infrastructure for gesture recognition. ...
The QBasicTimer class provides timer events for objects.
Definition: qbasictimer.h:55
QMultiMap< Qt::GestureType, QGestureRecognizer * > m_recognizers
The QGraphicsObject class provides a base class for all graphics items that require signals...
The QEvent class is the base class of all event classes.
Definition: qcoreevent.h:56
void cancelGesturesForChildren(QGesture *originatingGesture)
ObjectGesture(QObject *o, const Qt::GestureType &g)
The QMap class is a template class that provides a skip-list-based dictionary.
Definition: qdatastream.h:67
QSet< QGesture * > m_maybeGestures
The QList class is a template class that provides lists.
Definition: qdatastream.h:62