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40 
41 #ifndef QEVDEVTOUCHHANDLER_P_H
42 #define QEVDEVTOUCHHANDLER_P_H
43 
44 //
45 //  W A R N I N G
46 //  -------------
47 //
48 // This file is not part of the Qt API.  It exists purely as an
49 // implementation detail.  This header file may change from version to
50 // version without notice, or even be removed.
51 //
52 // We mean it.
53 //
54 
55 #include <QtGui/private/qtguiglobal_p.h>
56 #include <QObject>
57 #include <QString>
58 #include <QList>
59 #include <QThread>
60 #include <QtCore/private/qthread_p.h>
61 #include <qpa/qwindowsysteminterface.h>
62 #include "qevdevtouchfilter_p.h"
63 
64 #if QT_CONFIG(mtdev)
65 struct mtdev;
66 #endif
67 
68 QT_BEGIN_NAMESPACE
69 
70 class QSocketNotifier;
71 class QEvdevTouchScreenData;
72 
73 class QEvdevTouchScreenHandler : public QObject
74 {
75     Q_OBJECT
76 
77 public:
78     explicit QEvdevTouchScreenHandler(const QString &device, const QString &spec = QString(), QObject *parent = nullptr);
79     ~QEvdevTouchScreenHandler();
80 
81     QTouchDevice *touchDevice() const;
82 
83     bool isFiltered() const;
84 
85     void readData();
86 
87 signals:
88     void touchPointsUpdated();
89 
90 private:
91     friend class QEvdevTouchScreenData;
92     friend class QEvdevTouchScreenHandlerThread;
93 
94     void registerTouchDevice();
95     void unregisterTouchDevice();
96 
97     QSocketNotifier *m_notify;
98     int m_fd;
99     QEvdevTouchScreenData *d;
100     QTouchDevice *m_device;
101 #if QT_CONFIG(mtdev)
102     mtdev *m_mtdev;
103 #endif
104 };
105 
106 class QEvdevTouchScreenHandlerThread : public QDaemonThread
107 {
108     Q_OBJECT
109 public:
110     explicit QEvdevTouchScreenHandlerThread(const QString &device, const QString &spec, QObject *parent = nullptr);
111     ~QEvdevTouchScreenHandlerThread();
112     void run() override;
113 
114     bool isTouchDeviceRegistered() const;
115 
116     bool eventFilter(QObject *object, QEvent *event) override;
117 
118     void scheduleTouchPointUpdate();
119 
120 signals:
121     void touchDeviceRegistered();
122 
123 private:
124     Q_INVOKABLE void notifyTouchDeviceRegistered();
125 
126     void filterAndSendTouchPoints();
127     QRect targetScreenGeometry() const;
128 
129     QString m_device;
130     QString m_spec;
131     QEvdevTouchScreenHandler *m_handler;
132     bool m_touchDeviceRegistered;
133 
134     bool m_touchUpdatePending;
135     QWindow *m_filterWindow;
136 
137     struct FilteredTouchPoint {
138         QEvdevTouchFilter x;
139         QEvdevTouchFilter y;
140         QWindowSystemInterface::TouchPoint touchPoint;
141     };
142     QHash<int, FilteredTouchPoint> m_filteredPoints;
143 
144     float m_touchRate;
145 };
146 
147 QT_END_NAMESPACE
148 
149 #endif // QEVDEVTOUCH_P_H
150