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 QQUICKDROPAREA_P_H
5#define QQUICKDROPAREA_P_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 <private/qtquickglobal_p.h>
19
20#include <QtQuick/qquickitem.h>
21
22#include <QtGui/qevent.h>
23
24QT_REQUIRE_CONFIG(quick_draganddrop);
25
26QT_BEGIN_NAMESPACE
27
28class QQuickDropAreaPrivate;
29class QQuickDragEvent : public QObject
30{
31 Q_OBJECT
32 Q_PROPERTY(qreal x READ x FINAL)
33 Q_PROPERTY(qreal y READ y FINAL)
34 Q_PROPERTY(QObject *source READ source FINAL)
35 Q_PROPERTY(QStringList keys READ keys FINAL)
36 Q_PROPERTY(Qt::DropActions supportedActions READ supportedActions FINAL)
37 Q_PROPERTY(Qt::DropActions proposedAction READ proposedAction FINAL)
38 Q_PROPERTY(Qt::DropAction action READ action WRITE setAction RESET resetAction FINAL)
39 Q_PROPERTY(bool accepted READ accepted WRITE setAccepted FINAL)
40 Q_PROPERTY(bool hasColor READ hasColor FINAL)
41 Q_PROPERTY(bool hasHtml READ hasHtml FINAL)
42 Q_PROPERTY(bool hasText READ hasText FINAL)
43 Q_PROPERTY(bool hasUrls READ hasUrls FINAL)
44 Q_PROPERTY(QVariant colorData READ colorData FINAL)
45 Q_PROPERTY(QString html READ html FINAL)
46 Q_PROPERTY(QString text READ text FINAL)
47 Q_PROPERTY(QList<QUrl> urls READ urls FINAL)
48 Q_PROPERTY(QStringList formats READ formats FINAL)
49 QML_NAMED_ELEMENT(DragEvent)
50 QML_UNCREATABLE("DragEvent is only meant to be created by DropArea")
51 QML_ADDED_IN_VERSION(2, 0)
52public:
53 QQuickDragEvent(QQuickDropAreaPrivate *d, QDropEvent *event) : d(d), event(event) {}
54
55 qreal x() const { return event->position().x(); }
56 qreal y() const { return event->position().y(); }
57
58 QObject *source() const;
59
60 Qt::DropActions supportedActions() const { return event->possibleActions(); }
61 Qt::DropActions proposedAction() const { return event->proposedAction(); }
62 Qt::DropAction action() const { return event->dropAction(); }
63 void setAction(Qt::DropAction action) { event->setDropAction(action); }
64 void resetAction() { event->setDropAction(event->proposedAction()); }
65
66 QStringList keys() const;
67
68 bool accepted() const { return event->isAccepted(); }
69 void setAccepted(bool accepted) { event->setAccepted(accepted); }
70
71 bool hasColor() const;
72 bool hasHtml() const;
73 bool hasText() const;
74 bool hasUrls() const;
75 QVariant colorData() const;
76 QString html() const;
77 QString text() const;
78 QList<QUrl> urls() const;
79 QStringList formats() const;
80
81 Q_INVOKABLE QString getDataAsString(const QString &format) const;
82 Q_INVOKABLE QByteArray getDataAsArrayBuffer(const QString &format) const;
83 Q_INVOKABLE void acceptProposedAction();
84 Q_INVOKABLE void accept();
85 Q_INVOKABLE void accept(Qt::DropAction action);
86
87private:
88 QQuickDropAreaPrivate *d;
89 QDropEvent *event;
90};
91
92class QQuickDropAreaDrag : public QObject
93{
94 Q_OBJECT
95 Q_PROPERTY(qreal x READ x NOTIFY positionChanged FINAL)
96 Q_PROPERTY(qreal y READ y NOTIFY positionChanged FINAL)
97 Q_PROPERTY(QObject *source READ source NOTIFY sourceChanged FINAL)
98 QML_ANONYMOUS
99 QML_ADDED_IN_VERSION(2, 0)
100public:
101 QQuickDropAreaDrag(QQuickDropAreaPrivate *d, QObject *parent = nullptr);
102 ~QQuickDropAreaDrag();
103
104 qreal x() const;
105 qreal y() const;
106 QObject *source() const;
107
108Q_SIGNALS:
109 void positionChanged();
110 void sourceChanged();
111
112private:
113 QQuickDropAreaPrivate *d;
114
115 friend class QQuickDropArea;
116 friend class QQuickDropAreaPrivate;
117};
118
119class QQuickDropAreaPrivate;
120class Q_QUICK_PRIVATE_EXPORT QQuickDropArea : public QQuickItem
121{
122 Q_OBJECT
123 Q_PROPERTY(bool containsDrag READ containsDrag NOTIFY containsDragChanged FINAL)
124 Q_PROPERTY(QStringList keys READ keys WRITE setKeys NOTIFY keysChanged FINAL)
125 Q_PROPERTY(QQuickDropAreaDrag *drag READ drag CONSTANT FINAL)
126 QML_NAMED_ELEMENT(DropArea)
127 QML_ADDED_IN_VERSION(2, 0)
128
129public:
130 QQuickDropArea(QQuickItem *parent=0);
131 ~QQuickDropArea();
132
133 bool containsDrag() const;
134 void setContainsDrag(bool drag);
135
136 QStringList keys() const;
137 void setKeys(const QStringList &keys);
138
139 QQuickDropAreaDrag *drag();
140
141Q_SIGNALS:
142 void containsDragChanged();
143 void keysChanged();
144 void sourceChanged();
145
146 void entered(QQuickDragEvent *drag);
147 void exited();
148 void positionChanged(QQuickDragEvent *drag);
149 void dropped(QQuickDragEvent *drop);
150
151protected:
152 void dragMoveEvent(QDragMoveEvent *event) override;
153 void dragEnterEvent(QDragEnterEvent *event) override;
154 void dragLeaveEvent(QDragLeaveEvent *event) override;
155 void dropEvent(QDropEvent *event) override;
156
157private:
158 Q_DISABLE_COPY(QQuickDropArea)
159 Q_DECLARE_PRIVATE(QQuickDropArea)
160};
161
162QT_END_NAMESPACE
163
164QML_DECLARE_TYPE(QQuickDropArea)
165
166#endif // QQUICKDROPAREA_P_H
167

source code of qtdeclarative/src/quick/items/qquickdroparea_p.h