1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the plugins of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QXCBCLIPBOARD_H 41 #define QXCBCLIPBOARD_H 42 43 #include <qpa/qplatformclipboard.h> 44 #include <qxcbobject.h> 45 #include <xcb/xcb.h> 46 #include <xcb/xfixes.h> 47 48 #include <QtCore/QObject> 49 50 QT_BEGIN_NAMESPACE 51 52 #ifndef QT_NO_CLIPBOARD 53 54 class QXcbConnection; 55 class QXcbScreen; 56 class QXcbClipboard; 57 class QXcbClipboardMime; 58 59 class QXcbClipboardTransaction : public QObject 60 { 61 Q_OBJECT 62 public: 63 QXcbClipboardTransaction(QXcbClipboard *clipboard, xcb_window_t w, xcb_atom_t p, 64 QByteArray d, xcb_atom_t t, int f); 65 ~QXcbClipboardTransaction(); 66 67 bool updateIncrementalProperty(const xcb_property_notify_event_t *event); 68 69 protected: 70 void timerEvent(QTimerEvent *ev) override; 71 72 private: 73 QXcbClipboard *m_clipboard; 74 xcb_window_t m_window; 75 xcb_atom_t m_property; 76 QByteArray m_data; 77 xcb_atom_t m_target; 78 uint8_t m_format; 79 uint m_offset = 0; 80 int m_abortTimerId = 0; 81 }; 82 83 class QXcbClipboard : public QXcbObject, public QPlatformClipboard 84 { 85 public: 86 QXcbClipboard(QXcbConnection *connection); 87 ~QXcbClipboard(); 88 89 QMimeData *mimeData(QClipboard::Mode mode) override; 90 void setMimeData(QMimeData *data, QClipboard::Mode mode) override; 91 92 bool supportsMode(QClipboard::Mode mode) const override; 93 bool ownsMode(QClipboard::Mode mode) const override; 94 95 QXcbScreen *screen() const; 96 97 xcb_window_t requestor() const; 98 void setRequestor(xcb_window_t window); 99 100 xcb_window_t owner() const; 101 102 void handleSelectionRequest(xcb_selection_request_event_t *event); 103 void handleSelectionClearRequest(xcb_selection_clear_event_t *event); 104 void handleXFixesSelectionRequest(xcb_xfixes_selection_notify_event_t *event); 105 106 bool clipboardReadProperty(xcb_window_t win, xcb_atom_t property, bool deleteProperty, QByteArray *buffer, int *size, xcb_atom_t *type, int *format); 107 QByteArray clipboardReadIncrementalProperty(xcb_window_t win, xcb_atom_t property, int nbytes, bool nullterm); 108 109 QByteArray getDataInFormat(xcb_atom_t modeAtom, xcb_atom_t fmtatom); 110 111 bool handlePropertyNotify(const xcb_generic_event_t *event); 112 113 xcb_window_t getSelectionOwner(xcb_atom_t atom) const; 114 QByteArray getSelection(xcb_atom_t selection, xcb_atom_t target, xcb_atom_t property, xcb_timestamp_t t = 0); 115 increment()116 int increment() const { return m_maxPropertyRequestDataBytes; } clipboardTimeout()117 int clipboardTimeout() const { return clipboard_timeout; } 118 removeTransaction(xcb_window_t window)119 void removeTransaction(xcb_window_t window) { m_transactions.remove(window); } 120 121 private: 122 xcb_generic_event_t *waitForClipboardEvent(xcb_window_t window, int type, bool checkManager = false); 123 124 xcb_atom_t sendTargetsSelection(QMimeData *d, xcb_window_t window, xcb_atom_t property); 125 xcb_atom_t sendSelection(QMimeData *d, xcb_atom_t target, xcb_window_t window, xcb_atom_t property); 126 127 xcb_atom_t atomForMode(QClipboard::Mode mode) const; 128 QClipboard::Mode modeForAtom(xcb_atom_t atom) const; 129 130 // Selection and Clipboard 131 QScopedPointer<QXcbClipboardMime> m_xClipboard[2]; 132 QMimeData *m_clientClipboard[2]; 133 xcb_timestamp_t m_timestamp[2]; 134 135 xcb_window_t m_requestor = XCB_NONE; 136 xcb_window_t m_owner = XCB_NONE; 137 138 static const int clipboard_timeout; 139 140 int m_maxPropertyRequestDataBytes = 0; 141 bool m_clipboard_closing = false; 142 xcb_timestamp_t m_incr_receive_time = 0; 143 144 using TransactionMap = QMap<xcb_window_t, QXcbClipboardTransaction *>; 145 TransactionMap m_transactions; 146 }; 147 148 #endif // QT_NO_CLIPBOARD 149 150 QT_END_NAMESPACE 151 152 #endif // QXCBCLIPBOARD_H 153