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qquicktaphandler_p.h

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1/****************************************************************************-
2**-
3** Copyright (C) 2017 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtQuick 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 QQUICKTAPHANDLER_H-
41#define QQUICKTAPHANDLER_H-
42-
43//-
44// W A R N I N G-
45// --------------
46//-
47// This file is not part of the Qt API. It exists purely as an-
48// implementation detail. This header file may change from version to-
49// version without notice, or even be removed.-
50//-
51// We mean it.-
52//-
53-
54#include "qquickitem.h"-
55#include "qevent.h"-
56#include "qquicksinglepointhandler_p.h"-
57#include <QtCore/qbasictimer.h>-
58-
59QT_BEGIN_NAMESPACE-
60-
61class Q_AUTOTEST_EXPORT QQuickTapHandler : public QQuickSinglePointHandler-
62{-
63 Q_OBJECT-
64 Q_PROPERTY(bool pressed READ isPressed NOTIFY pressedChanged)-
65 Q_PROPERTY(int tapCount READ tapCount NOTIFY tapCountChanged)-
66 Q_PROPERTY(qreal timeHeld READ timeHeld NOTIFY timeHeldChanged)-
67 Q_PROPERTY(qreal longPressThreshold READ longPressThreshold WRITE setLongPressThreshold NOTIFY longPressThresholdChanged)-
68 Q_PROPERTY(GesturePolicy gesturePolicy READ gesturePolicy WRITE setGesturePolicy NOTIFY gesturePolicyChanged)-
69-
70public:-
71 enum GesturePolicy {-
72 DragThreshold,-
73 WithinBounds,-
74 ReleaseWithinBounds-
75 };-
76 Q_ENUM(GesturePolicy)-
77-
78 explicit QQuickTapHandler(QObject *parent = nullptr);-
79 ~QQuickTapHandler();-
80-
81 bool isPressed() const { return m_pressed; }
executed 1868 times by 4 tests: return m_pressed;
Executed by:
  • tst_examples
  • tst_flickableinterop
  • tst_qquickdraghandler
  • tst_qquicktaphandler
1868
82-
83 int tapCount() const { return m_tapCount; }
never executed: return m_tapCount;
0
84 qreal timeHeld() const { return (m_holdTimer.isValid() ? m_holdTimer.elapsed() / 1000.0 : -1.0); }
executed 696 times by 2 tests: return (m_holdTimer.isValid() ? m_holdTimer.elapsed() / 1000.0 : -1.0);
Executed by:
  • tst_flickableinterop
  • tst_qquicktaphandler
696
85-
86 qreal longPressThreshold() const;-
87 void setLongPressThreshold(qreal longPressThreshold);-
88-
89 GesturePolicy gesturePolicy() const { return m_gesturePolicy; }
never executed: return m_gesturePolicy;
0
90 void setGesturePolicy(GesturePolicy gesturePolicy);-
91-
92Q_SIGNALS:-
93 void pressedChanged();-
94 void tapCountChanged();-
95 void timeHeldChanged();-
96 void longPressThresholdChanged();-
97 void gesturePolicyChanged();-
98 void tapped();-
99 void singleTapped();-
100 void doubleTapped();-
101 void longPressed();-
102-
103protected:-
104 void onGrabChanged(QQuickPointerHandler *grabber, QQuickEventPoint::GrabState stateChange, QQuickEventPoint *point) override;-
105 void timerEvent(QTimerEvent *event) override;-
106 bool wantsEventPoint(QQuickEventPoint *point) override;-
107 void handleEventPoint(QQuickEventPoint *point) override;-
108-
109private:-
110 void setPressed(bool press, bool cancel, QQuickEventPoint *point);-
111 int longPressThresholdMilliseconds() const;-
112 void connectPreRenderSignal(bool conn = true);-
113 void updateTimeHeld();-
114-
115private:-
116 bool m_pressed;-
117 GesturePolicy m_gesturePolicy;-
118 int m_tapCount;-
119 int m_longPressThreshold;-
120 QBasicTimer m_longPressTimer;-
121 QElapsedTimer m_holdTimer;-
122 QPointF m_lastTapPos;-
123 qreal m_lastTapTimestamp;-
124-
125 static qreal m_multiTapInterval;-
126 static int m_mouseMultiClickDistanceSquared;-
127 static int m_touchMultiTapDistanceSquared;-
128};-
129-
130QT_END_NAMESPACE-
131-
132QML_DECLARE_TYPE(QQuickTapHandler)-
133-
134#endif // QQUICKTAPHANDLER_H-
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