1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QQUICKPINCHHANDLER_H |
5 | #define QQUICKPINCHHANDLER_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <QtGui/qevent.h> |
19 | #include <QtQuick/qquickitem.h> |
20 | |
21 | #include "qquickmultipointhandler_p.h" |
22 | #include <private/qquicktranslate_p.h> |
23 | #include "qquickdragaxis_p.h" |
24 | |
25 | QT_BEGIN_NAMESPACE |
26 | |
27 | using namespace Qt::StringLiterals; |
28 | |
29 | class Q_QUICK_PRIVATE_EXPORT QQuickPinchHandler : public QQuickMultiPointHandler |
30 | { |
31 | Q_OBJECT |
32 | |
33 | Q_PROPERTY(QQuickDragAxis *scaleAxis READ scaleAxis CONSTANT FINAL) |
34 | #if QT_DEPRECATED_SINCE(6, 5) |
35 | Q_PROPERTY(qreal minimumScale READ minimumScale WRITE setMinimumScale NOTIFY minimumScaleChanged FINAL) |
36 | Q_PROPERTY(qreal maximumScale READ maximumScale WRITE setMaximumScale NOTIFY maximumScaleChanged FINAL) |
37 | Q_PROPERTY(qreal scale READ scale NOTIFY updated FINAL) |
38 | #endif |
39 | Q_PROPERTY(qreal activeScale READ activeScale NOTIFY scaleChanged FINAL) |
40 | Q_PROPERTY(qreal persistentScale READ persistentScale WRITE setPersistentScale NOTIFY scaleChanged FINAL) |
41 | |
42 | Q_PROPERTY(QQuickDragAxis *rotationAxis READ rotationAxis CONSTANT FINAL) |
43 | #if QT_DEPRECATED_SINCE(6, 5) |
44 | Q_PROPERTY(qreal minimumRotation READ minimumRotation WRITE setMinimumRotation NOTIFY minimumRotationChanged FINAL) |
45 | Q_PROPERTY(qreal maximumRotation READ maximumRotation WRITE setMaximumRotation NOTIFY maximumRotationChanged FINAL) |
46 | Q_PROPERTY(qreal rotation READ rotation NOTIFY updated FINAL) |
47 | #endif |
48 | Q_PROPERTY(qreal activeRotation READ activeRotation NOTIFY rotationChanged FINAL) |
49 | Q_PROPERTY(qreal persistentRotation READ persistentRotation WRITE setPersistentRotation NOTIFY rotationChanged FINAL) |
50 | |
51 | Q_PROPERTY(QQuickDragAxis * xAxis READ xAxis CONSTANT FINAL) |
52 | Q_PROPERTY(QQuickDragAxis * yAxis READ yAxis CONSTANT FINAL) |
53 | #if QT_DEPRECATED_SINCE(6, 5) |
54 | Q_PROPERTY(QVector2D translation READ translation NOTIFY updated FINAL) |
55 | #endif |
56 | Q_PROPERTY(QPointF activeTranslation READ activeTranslation NOTIFY translationChanged REVISION(6, 5) FINAL) |
57 | Q_PROPERTY(QPointF persistentTranslation READ persistentTranslation WRITE setPersistentTranslation NOTIFY translationChanged REVISION(6, 5) FINAL) |
58 | |
59 | QML_NAMED_ELEMENT(PinchHandler) |
60 | QML_ADDED_IN_VERSION(2, 12) |
61 | |
62 | public: |
63 | explicit QQuickPinchHandler(QQuickItem *parent = nullptr); |
64 | |
65 | QQuickDragAxis *xAxis() { return &m_xAxis; } |
66 | QQuickDragAxis *yAxis() { return &m_yAxis; } |
67 | #if QT_DEPRECATED_SINCE(6, 5) |
68 | QVector2D translation() const { return QVector2D(activeTranslation()); } |
69 | #endif |
70 | QPointF activeTranslation() const { return QPointF(m_xAxis.activeValue(), m_yAxis.activeValue()); } |
71 | QPointF persistentTranslation() const { return QPointF(m_xAxis.persistentValue(), m_yAxis.persistentValue()); } |
72 | void setPersistentTranslation(const QPointF &trans); |
73 | |
74 | QQuickDragAxis *scaleAxis() { return &m_scaleAxis; } |
75 | #if QT_DEPRECATED_SINCE(6, 5) |
76 | qreal minimumScale() const { return m_scaleAxis.minimum(); } |
77 | void setMinimumScale(qreal minimumScale); |
78 | qreal maximumScale() const { return m_scaleAxis.maximum(); } |
79 | void setMaximumScale(qreal maximumScale); |
80 | qreal scale() const { return persistentScale(); } |
81 | #endif |
82 | qreal activeScale() const { return m_scaleAxis.activeValue(); } |
83 | void setActiveScale(qreal scale); |
84 | qreal persistentScale() const { return m_scaleAxis.persistentValue(); } |
85 | void setPersistentScale(qreal scale); |
86 | |
87 | QQuickDragAxis *rotationAxis() { return &m_rotationAxis; } |
88 | #if QT_DEPRECATED_SINCE(6, 5) |
89 | qreal minimumRotation() const { return m_rotationAxis.minimum(); } |
90 | void setMinimumRotation(qreal minimumRotation); |
91 | qreal maximumRotation() const { return m_rotationAxis.maximum(); } |
92 | void setMaximumRotation(qreal maximumRotation); |
93 | qreal rotation() const { return activeRotation(); } |
94 | #endif |
95 | qreal activeRotation() const { return m_rotationAxis.activeValue(); } |
96 | void setActiveRotation(qreal rot); |
97 | qreal persistentRotation() const { return m_rotationAxis.persistentValue(); } |
98 | void setPersistentRotation(qreal rot); |
99 | |
100 | Q_SIGNALS: |
101 | void minimumScaleChanged(); |
102 | void maximumScaleChanged(); |
103 | void minimumRotationChanged(); |
104 | void maximumRotationChanged(); |
105 | void updated(); |
106 | void scaleChanged(qreal delta); |
107 | void rotationChanged(qreal delta); |
108 | void translationChanged(QVector2D delta); |
109 | |
110 | protected: |
111 | bool wantsPointerEvent(QPointerEvent *event) override; |
112 | void onActiveChanged() override; |
113 | void handlePointerEventImpl(QPointerEvent *event) override; |
114 | |
115 | private: |
116 | QQuickDragAxis m_xAxis = {this, u"x"_s }; |
117 | QQuickDragAxis m_yAxis = {this, u"y"_s }; |
118 | QQuickDragAxis m_scaleAxis = {this, u"scale"_s , 1}; |
119 | QQuickDragAxis m_rotationAxis = {this, u"rotation"_s }; |
120 | |
121 | // internal |
122 | qreal m_startDistance = 0; |
123 | qreal m_accumulatedStartCentroidDistance = 0; |
124 | QPointF m_startTargetPos; |
125 | QVector<PointData> m_startAngles; |
126 | QQuickMatrix4x4 m_transform; |
127 | }; |
128 | |
129 | QT_END_NAMESPACE |
130 | |
131 | #endif // QQUICKPINCHHANDLER_H |
132 | |