blob: 5a46246143e8a309f41d2956f1599ac9eb24eca0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "gestures.h"
#include <QTouchEvent>
Qt::GestureType ThreeFingerSlideGesture::Type = Qt::CustomGesture;
QGesture *ThreeFingerSlideGestureRecognizer::create(QObject *)
{
return new ThreeFingerSlideGesture;
}
QGestureRecognizer::Result ThreeFingerSlideGestureRecognizer::recognize(QGesture *state, QObject *, QEvent *event)
{
ThreeFingerSlideGesture *d = static_cast<ThreeFingerSlideGesture *>(state);
QGestureRecognizer::Result result;
switch (event->type()) {
case QEvent::TouchBegin:
result = QGestureRecognizer::MayBeGesture;
break;
case QEvent::TouchEnd:
if (d->gestureFired)
result = QGestureRecognizer::FinishGesture;
else
result = QGestureRecognizer::CancelGesture;
break;
case QEvent::TouchUpdate:
if (d->state() != Qt::NoGesture) {
QTouchEvent *ev = static_cast<QTouchEvent*>(event);
if (ev->points().size() == 3) {
d->gestureFired = true;
result = QGestureRecognizer::TriggerGesture;
} else {
result = QGestureRecognizer::MayBeGesture;
for (const QEventPoint &pt : ev->points()) {
const int distance = (pt.globalPosition().toPoint() - pt.globalPressPosition().toPoint()).manhattanLength();
if (distance > 20)
result = QGestureRecognizer::CancelGesture;
}
}
} else {
result = QGestureRecognizer::CancelGesture;
}
break;
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
case QEvent::MouseMove:
if (d->state() != Qt::NoGesture)
result = QGestureRecognizer::Ignore;
else
result = QGestureRecognizer::CancelGesture;
break;
default:
result = QGestureRecognizer::Ignore;
break;
}
return result;
}
void ThreeFingerSlideGestureRecognizer::reset(QGesture *state)
{
static_cast<ThreeFingerSlideGesture *>(state)->gestureFired = false;
QGestureRecognizer::reset(state);
}
QGesture *RotateGestureRecognizer::create(QObject *)
{
return new QGesture;
}
QGestureRecognizer::Result RotateGestureRecognizer::recognize(QGesture *, QObject *, QEvent *event)
{
switch (event->type()) {
case QEvent::TouchBegin:
case QEvent::TouchEnd:
case QEvent::TouchUpdate:
break;
default:
break;
}
return QGestureRecognizer::Ignore;
}
void RotateGestureRecognizer::reset(QGesture *state)
{
QGestureRecognizer::reset(state);
}
#include "moc_gestures.cpp"
|
