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#pragma once
5
6#include <qpa/qplatformclipboard.h>
7#include <qxcbobject.h>
8#include <xcb/xcb.h>
9#include <xcb/xfixes.h>
10
11#include <QtCore/qobject.h>
12#include <QtCore/qmap.h>
13
14QT_BEGIN_NAMESPACE
15
16#ifndef QT_NO_CLIPBOARD
17
18class QXcbConnection;
19class QXcbScreen;
20class QXcbClipboard;
21class QXcbClipboardMime;
22
23class QXcbClipboardTransaction : public QObject
24{
25 Q_OBJECT
26public:
27 QXcbClipboardTransaction(QXcbClipboard *clipboard, xcb_window_t w, xcb_atom_t p,
28 QByteArray d, xcb_atom_t t, int f);
29 ~QXcbClipboardTransaction();
30
31 bool updateIncrementalProperty(const xcb_property_notify_event_t *event);
32
33protected:
34 void timerEvent(QTimerEvent *ev) override;
35
36private:
37 QXcbClipboard *m_clipboard;
38 xcb_window_t m_window;
39 xcb_atom_t m_property;
40 QByteArray m_data;
41 xcb_atom_t m_target;
42 uint8_t m_format;
43 uint m_offset = 0;
44 int m_abortTimerId = 0;
45};
46
47class QXcbClipboard : public QXcbObject, public QPlatformClipboard
48{
49public:
50 QXcbClipboard(QXcbConnection *connection);
51 ~QXcbClipboard();
52
53 QMimeData *mimeData(QClipboard::Mode mode) override;
54 void setMimeData(QMimeData *data, QClipboard::Mode mode) override;
55
56 bool supportsMode(QClipboard::Mode mode) const override;
57 bool ownsMode(QClipboard::Mode mode) const override;
58
59 QXcbScreen *screen() const;
60
61 xcb_window_t requestor() const;
62 void setRequestor(xcb_window_t window);
63
64 void handleSelectionRequest(xcb_selection_request_event_t *event);
65 void handleSelectionClearRequest(xcb_selection_clear_event_t *event);
66 void handleXFixesSelectionRequest(xcb_xfixes_selection_notify_event_t *event);
67
68 bool clipboardReadProperty(xcb_window_t win, xcb_atom_t property, bool deleteProperty, QByteArray *buffer, int *size, xcb_atom_t *type, int *format);
69 std::optional<QByteArray> clipboardReadIncrementalProperty(xcb_window_t win, xcb_atom_t property, int nbytes, bool nullterm);
70
71 std::optional<QByteArray> getDataInFormat(xcb_atom_t modeAtom, xcb_atom_t fmtatom);
72
73 bool handlePropertyNotify(const xcb_generic_event_t *event);
74
75 std::optional<QByteArray> getSelection(xcb_atom_t selection, xcb_atom_t target, xcb_atom_t property, xcb_timestamp_t t = 0);
76
77 int increment() const { return m_maxPropertyRequestDataBytes; }
78 int clipboardTimeout() const { return clipboard_timeout; }
79
80 void removeTransaction(xcb_window_t window) { m_transactions.remove(key: window); }
81
82private:
83 xcb_generic_event_t *waitForClipboardEvent(xcb_window_t window, int type, bool checkManager = false);
84
85 xcb_atom_t sendTargetsSelection(QMimeData *d, xcb_window_t window, xcb_atom_t property);
86 xcb_atom_t sendSelection(QMimeData *d, xcb_atom_t target, xcb_window_t window, xcb_atom_t property);
87
88 xcb_atom_t atomForMode(QClipboard::Mode mode) const;
89 QClipboard::Mode modeForAtom(xcb_atom_t atom) const;
90
91 // Selection and Clipboard
92 QScopedPointer<QXcbClipboardMime> m_xClipboard[2];
93 QMimeData *m_clientClipboard[2];
94 xcb_timestamp_t m_timestamp[2];
95
96 xcb_window_t m_requestor = XCB_NONE;
97
98 static const int clipboard_timeout;
99
100 int m_maxPropertyRequestDataBytes = 0;
101 bool m_clipboard_closing = false;
102 xcb_timestamp_t m_incr_receive_time = 0;
103
104 using TransactionMap = QMap<xcb_window_t, QXcbClipboardTransaction *>;
105 TransactionMap m_transactions;
106};
107
108#endif // QT_NO_CLIPBOARD
109
110QT_END_NAMESPACE
111

source code of qtbase/src/plugins/platforms/xcb/qxcbclipboard.h