workspace/klipper/clipboardpoll.h

   1 // -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8; -*-
   2 /* This file is part of the KDE project
   3    Copyright (C) 2003 by Lubos Lunak <l.lunak@kde.org>
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public
   7    License as published by the Free Software Foundation; either
   8    version 2 of the License, or (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; see the file COPYING.  If not, write to
  17    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18    Boston, MA 02110-1301, USA.
  19 */
  20 #ifndef _CLIPBOARDPOLL_H_
  21 #define _CLIPBOARDPOLL_H_
  22
  23 #include <QWidget>
  24 #include <QTimer>
  25 #include <X11/Xlib.h>
  26 #include <fixx11h.h>
  27
  28 class ClipboardPoll
  29     : public QWidget
  30     {
  31     Q_OBJECT
  32     public:
  33         ClipboardPoll();
  34     Q_SIGNALS:
  35         void clipboardChanged( bool selectionMode );
  36     protected:
  37         virtual bool x11Event( XEvent* );
  38     private Q_SLOTS:
  39         void timeout();
  40         void qtSelectionChanged();
  41         void qtClipboardChanged();
  42     private:
  43         struct SelectionData
  44         {
  45             Atom atom;
  46             Atom sentinel_atom;
  47             Atom timestamp_atom;
  48             Window last_owner;
  49             bool owner_is_qt;
  50             Time last_change;
  51             bool waiting_for_timestamp;
  52             Time waiting_x_time;
  53         };
  54         void updateQtOwnership( SelectionData& data );
  55         bool checkTimestamp( SelectionData& data );
  56         bool changedTimestamp( SelectionData& data, const XEvent& e );
  57         void initPolling();
  58         QTimer m_timer;
  59         SelectionData m_selection;
  60         SelectionData m_clipboard;
  61         Atom m_xa_clipboard;
  62         Atom m_xa_timestamp;
  63         int m_xfixes_event_base;
  64     };
  65
  66 #endif