blob: 9000a3aa2447ea6003bd0cf3531ec4737e621747 (
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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQUICKPINCHHANDLER_H
#define QQUICKPINCHHANDLER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qquickitem.h"
#include "qevent.h"
#include "qquickmultipointhandler_p.h"
#include <private/qquicktranslate_p.h>
#include "qquickdragaxis_p.h"
QT_BEGIN_NAMESPACE
class Q_QUICK_PRIVATE_EXPORT QQuickPinchHandler : public QQuickMultiPointHandler
{
Q_OBJECT
Q_PROPERTY(qreal minimumScale READ minimumScale WRITE setMinimumScale NOTIFY minimumScaleChanged)
Q_PROPERTY(qreal maximumScale READ maximumScale WRITE setMaximumScale NOTIFY maximumScaleChanged)
Q_PROPERTY(qreal minimumRotation READ minimumRotation WRITE setMinimumRotation NOTIFY minimumRotationChanged)
Q_PROPERTY(qreal maximumRotation READ maximumRotation WRITE setMaximumRotation NOTIFY maximumRotationChanged)
Q_PROPERTY(qreal scale READ scale NOTIFY updated)
Q_PROPERTY(qreal activeScale READ activeScale NOTIFY updated)
Q_PROPERTY(qreal rotation READ rotation NOTIFY updated)
Q_PROPERTY(QVector2D translation READ translation NOTIFY updated)
Q_PROPERTY(QQuickDragAxis * xAxis READ xAxis CONSTANT)
Q_PROPERTY(QQuickDragAxis * yAxis READ yAxis CONSTANT)
QML_NAMED_ELEMENT(PinchHandler)
QML_ADDED_IN_VERSION(2, 12)
public:
explicit QQuickPinchHandler(QQuickItem *parent = nullptr);
qreal minimumScale() const { return m_minimumScale; }
void setMinimumScale(qreal minimumScale);
qreal maximumScale() const { return m_maximumScale; }
void setMaximumScale(qreal maximumScale);
qreal minimumRotation() const { return m_minimumRotation; }
void setMinimumRotation(qreal minimumRotation);
qreal maximumRotation() const { return m_maximumRotation; }
void setMaximumRotation(qreal maximumRotation);
QVector2D translation() const { return m_activeTranslation; }
qreal scale() const { return m_accumulatedScale; }
qreal activeScale() const { return m_activeScale; }
qreal rotation() const { return m_activeRotation; }
QQuickDragAxis *xAxis() { return &m_xAxis; }
QQuickDragAxis *yAxis() { return &m_yAxis; }
signals:
void minimumScaleChanged();
void maximumScaleChanged();
void minimumRotationChanged();
void maximumRotationChanged();
void updated();
protected:
bool wantsPointerEvent(QPointerEvent *event) override;
void onActiveChanged() override;
void handlePointerEventImpl(QPointerEvent *event) override;
private:
// properties
qreal m_activeScale = 1;
qreal m_accumulatedScale = 1;
qreal m_activeRotation = 0;
QVector2D m_activeTranslation = QVector2D(0, 0);
qreal m_minimumScale = -qInf();
qreal m_maximumScale = qInf();
qreal m_minimumRotation = -qInf();
qreal m_maximumRotation = qInf();
QQuickDragAxis m_xAxis;
QQuickDragAxis m_yAxis;
// internal
qreal m_startScale = 1;
qreal m_startRotation = 0;
qreal m_startDistance = 0;
QPointF m_startPos;
qreal m_accumulatedStartCentroidDistance = 0;
QVector<PointData> m_startAngles;
QQuickMatrix4x4 m_transform;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QQuickPinchHandler)
#endif // QQUICKPINCHHANDLER_H
|
