mirror of
https://github.com/reactos/wine.git
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b2df5f9f19
- add timeout when calling XCheckTypedWindowEvent - fix broken IsClipboardFormatAvailable; it tried to do a trick with EnumClipboardFormats by making incorrect assumptions - in X11DRV_IsClipboardFormatAvailable do a quick exit if no one owns the selection - add 1 second *minimum* time lapse between XSelectionOwner calls - sync clipboard ownership between different wine processes - prevents apps from getting into wierd state where they thought they didn't own the selection but they did and as a result queried themselves for available selection data
161 lines
3.6 KiB
C
161 lines
3.6 KiB
C
/*
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* Server-side clipboard management
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*
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* Copyright (C) 2002 Ulrich Czekalla
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <assert.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "request.h"
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#include "object.h"
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#include "user.h"
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struct thread *cbthread; /* thread id that has clipboard open */
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static user_handle_t clipboard; /* window that has clipboard open */
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struct thread *cbowner; /* thread id that owns the clipboard */
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static user_handle_t owner; /* window that owns the clipboard data */
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static user_handle_t viewer; /* first window in clipboard viewer list */
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static unsigned int seqno; /* clipboard change sequence number */
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static time_t seqnots; /* time stamp of last seqno increment */
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#define MINUPDATELAPSE 2
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/* Called when thread terminates to allow release of clipboard */
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void cleanup_clipboard_thread(struct thread *thread)
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{
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if (thread == cbthread)
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{
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clipboard = 0;
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cbthread = NULL;
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}
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if (thread == cbowner)
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{
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owner = 0;
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cbowner = NULL;
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}
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}
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static int set_clipboard_window(user_handle_t win, int clear)
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{
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if (cbthread && cbthread != current)
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{
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set_error(STATUS_WAS_LOCKED);
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return 0;
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}
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else if (!clear)
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{
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clipboard = win;
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cbthread = current;
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}
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else
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{
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cbthread = NULL;
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clipboard = 0;
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}
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return 1;
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}
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static int set_clipboard_owner(user_handle_t win, int clear)
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{
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if (cbthread == current)
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{
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if (!clear)
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{
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cbowner = current;
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owner = win;
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}
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else
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{
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cbowner = 0;
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owner = 0;
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}
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seqno++;
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return 1;
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}
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else
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{
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set_error(STATUS_WAS_LOCKED);
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return 0;
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}
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}
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static int get_seqno(void)
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{
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time_t tm = time(NULL);
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if (!cbowner && (tm > (seqnots + MINUPDATELAPSE)))
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{
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seqnots = tm;
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seqno++;
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}
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return seqno;
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}
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DECL_HANDLER(set_clipboard_info)
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{
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reply->old_clipboard = clipboard;
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reply->old_owner = owner;
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reply->old_viewer = viewer;
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if (req->flags & SET_CB_OPEN)
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{
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if (!set_clipboard_window(req->clipboard, 0))
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return;
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}
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else if (req->flags & SET_CB_CLOSE)
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{
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if (!set_clipboard_window(0, 1))
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return;
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}
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if (req->flags & SET_CB_OWNER)
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{
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if (!set_clipboard_owner(req->owner, 0))
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return;
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}
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else if (req->flags & SET_CB_RELOWNER)
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{
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if (!set_clipboard_owner(0, 1))
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return;
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}
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if (req->flags & SET_CB_VIEWER)
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viewer = req->viewer;
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if (req->flags & SET_CB_SEQNO)
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seqno++;
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reply->seqno = get_seqno();
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if (cbthread == current)
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reply->flags |= CB_OPEN;
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if (cbowner == current)
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reply->flags |= CB_OWNER;
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}
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