forked from AuroraMiddleware/gtk
29eb3fba5f
This was an incomplete attempt to get rid of the custom free function. Lets just keep it for now. Bug 637849, patch by Dan Winship. Also add a test case for this function.
790 lines
22 KiB
C
790 lines
22 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 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
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkselection.h"
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#include "gdkproperty.h"
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#include "gdkprivate.h"
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#include "gdkprivate-x11.h"
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#include "gdkdisplay-x11.h"
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <string.h>
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typedef struct _OwnerInfo OwnerInfo;
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struct _OwnerInfo
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{
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GdkAtom selection;
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GdkWindow *owner;
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gulong serial;
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};
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static GSList *owner_list;
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/* When a window is destroyed we check if it is the owner
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* of any selections. This is somewhat inefficient, but
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* owner_list is typically short, and it is a low memory,
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* low code solution
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*/
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void
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_gdk_x11_selection_window_destroyed (GdkWindow *window)
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{
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GSList *tmp_list = owner_list;
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while (tmp_list)
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{
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OwnerInfo *info = tmp_list->data;
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tmp_list = tmp_list->next;
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if (info->owner == window)
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{
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owner_list = g_slist_remove (owner_list, info);
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g_free (info);
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}
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}
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}
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/* We only pass through those SelectionClear events that actually
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* reflect changes to the selection owner that we didn't make ourself.
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*/
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gboolean
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_gdk_x11_selection_filter_clear_event (XSelectionClearEvent *event)
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{
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GSList *tmp_list = owner_list;
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GdkDisplay *display = gdk_x11_lookup_xdisplay (event->display);
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while (tmp_list)
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{
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OwnerInfo *info = tmp_list->data;
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if (gdk_window_get_display (info->owner) == display &&
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info->selection == gdk_x11_xatom_to_atom_for_display (display, event->selection))
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{
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if ((GDK_WINDOW_XID (info->owner) == event->window &&
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event->serial >= info->serial))
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{
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owner_list = g_slist_remove (owner_list, info);
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g_free (info);
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return TRUE;
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}
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else
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return FALSE;
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}
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tmp_list = tmp_list->next;
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}
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return FALSE;
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}
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gboolean
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_gdk_x11_display_set_selection_owner (GdkDisplay *display,
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GdkWindow *owner,
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GdkAtom selection,
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guint32 time,
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gboolean send_event)
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{
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Display *xdisplay;
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Window xwindow;
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Atom xselection;
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GSList *tmp_list;
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OwnerInfo *info;
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if (gdk_display_is_closed (display))
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return FALSE;
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if (owner)
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{
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if (GDK_WINDOW_DESTROYED (owner) || !GDK_WINDOW_IS_X11 (owner))
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return FALSE;
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gdk_window_ensure_native (owner);
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xdisplay = GDK_WINDOW_XDISPLAY (owner);
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xwindow = GDK_WINDOW_XID (owner);
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}
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else
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{
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xdisplay = GDK_DISPLAY_XDISPLAY (display);
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xwindow = None;
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}
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xselection = gdk_x11_atom_to_xatom_for_display (display, selection);
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tmp_list = owner_list;
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while (tmp_list)
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{
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info = tmp_list->data;
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if (info->selection == selection)
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{
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owner_list = g_slist_remove (owner_list, info);
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g_free (info);
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break;
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}
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tmp_list = tmp_list->next;
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}
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if (owner)
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{
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info = g_new (OwnerInfo, 1);
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info->owner = owner;
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info->serial = NextRequest (GDK_WINDOW_XDISPLAY (owner));
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info->selection = selection;
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owner_list = g_slist_prepend (owner_list, info);
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}
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XSetSelectionOwner (xdisplay, xselection, xwindow, time);
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return (XGetSelectionOwner (xdisplay, xselection) == xwindow);
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}
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GdkWindow *
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_gdk_x11_display_get_selection_owner (GdkDisplay *display,
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GdkAtom selection)
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{
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Window xwindow;
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if (gdk_display_is_closed (display))
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return NULL;
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xwindow = XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display),
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gdk_x11_atom_to_xatom_for_display (display,
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selection));
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if (xwindow == None)
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return NULL;
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return gdk_x11_window_lookup_for_display (display, xwindow);
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}
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void
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_gdk_x11_display_convert_selection (GdkDisplay *display,
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GdkWindow *requestor,
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GdkAtom selection,
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GdkAtom target,
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guint32 time)
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{
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g_return_if_fail (selection != GDK_NONE);
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if (GDK_WINDOW_DESTROYED (requestor) || !GDK_WINDOW_IS_X11 (requestor))
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return;
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gdk_window_ensure_native (requestor);
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XConvertSelection (GDK_WINDOW_XDISPLAY (requestor),
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gdk_x11_atom_to_xatom_for_display (display, selection),
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gdk_x11_atom_to_xatom_for_display (display, target),
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gdk_x11_get_xatom_by_name_for_display (display, "GDK_SELECTION"),
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GDK_WINDOW_XID (requestor), time);
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}
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gint
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_gdk_x11_display_get_selection_property (GdkDisplay *display,
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GdkWindow *requestor,
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guchar **data,
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GdkAtom *ret_type,
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gint *ret_format)
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{
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gulong nitems;
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gulong nbytes;
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gulong length = 0;
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Atom prop_type;
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gint prop_format;
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guchar *t = NULL;
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if (GDK_WINDOW_DESTROYED (requestor) || !GDK_WINDOW_IS_X11 (requestor))
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goto err;
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t = NULL;
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/* We can't delete the selection here, because it might be the INCR
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protocol, in which case the client has to make sure they'll be
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notified of PropertyChange events _before_ the property is deleted.
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Otherwise there's no guarantee we'll win the race ... */
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if (XGetWindowProperty (GDK_WINDOW_XDISPLAY (requestor),
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GDK_WINDOW_XID (requestor),
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gdk_x11_get_xatom_by_name_for_display (display, "GDK_SELECTION"),
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0, 0x1FFFFFFF /* MAXINT32 / 4 */, False,
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AnyPropertyType, &prop_type, &prop_format,
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&nitems, &nbytes, &t) != Success)
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goto err;
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if (prop_type != None)
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{
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if (ret_type)
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*ret_type = gdk_x11_xatom_to_atom_for_display (display, prop_type);
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if (ret_format)
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*ret_format = prop_format;
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if (prop_type == XA_ATOM ||
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prop_type == gdk_x11_get_xatom_by_name_for_display (display, "ATOM_PAIR"))
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{
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Atom* atoms = (Atom*) t;
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GdkAtom* atoms_dest;
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gint num_atom, i;
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if (prop_format != 32)
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goto err;
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num_atom = nitems;
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length = sizeof (GdkAtom) * num_atom + 1;
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if (data)
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{
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*data = g_malloc (length);
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(*data)[length - 1] = '\0';
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atoms_dest = (GdkAtom *)(*data);
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for (i=0; i < num_atom; i++)
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atoms_dest[i] = gdk_x11_xatom_to_atom_for_display (display, atoms[i]);
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}
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}
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else
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{
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switch (prop_format)
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{
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case 8:
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length = nitems;
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break;
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case 16:
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length = sizeof(short) * nitems;
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break;
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case 32:
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length = sizeof(long) * nitems;
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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/* Add on an extra byte to handle null termination. X guarantees
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that t will be 1 longer than nitems and null terminated */
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length += 1;
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if (data)
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*data = g_memdup (t, length);
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}
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if (t)
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XFree (t);
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return length - 1;
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}
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err:
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if (ret_type)
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*ret_type = GDK_NONE;
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if (ret_format)
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*ret_format = 0;
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if (data)
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*data = NULL;
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return 0;
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}
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void
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_gdk_x11_display_send_selection_notify (GdkDisplay *display,
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GdkNativeWindow requestor,
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GdkAtom selection,
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GdkAtom target,
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GdkAtom property,
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guint32 time)
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{
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XSelectionEvent xevent;
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xevent.type = SelectionNotify;
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xevent.serial = 0;
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xevent.send_event = True;
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xevent.requestor = requestor;
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xevent.selection = gdk_x11_atom_to_xatom_for_display (display, selection);
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xevent.target = gdk_x11_atom_to_xatom_for_display (display, target);
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if (property == GDK_NONE)
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xevent.property = None;
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else
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xevent.property = gdk_x11_atom_to_xatom_for_display (display, property);
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xevent.time = time;
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_gdk_x11_display_send_xevent (display, requestor, False, NoEventMask, (XEvent*) & xevent);
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}
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/**
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* gdk_x11_display_text_property_to_text_list:
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* @display: The #GdkDisplay where the encoding is defined
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* @encoding: an atom representing the encoding. The most
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* common values for this are STRING, or COMPOUND_TEXT.
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* This is value used as the type for the property
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* @format: the format of the property
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* @text: The text data
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* @length: The number of items to transform
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* @list: location to store an array of strings in
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* the encoding of the current locale. This array should be
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* freed using gdk_free_text_list().
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*
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* Convert a text string from the encoding as it is stored
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* in a property into an array of strings in the encoding of
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* the current locale. (The elements of the array represent the
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* nul-separated elements of the original text string.)
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*
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* Returns: the number of strings stored in list, or 0,
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* if the conversion failed
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*
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* Since: 2.24
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*/
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gint
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gdk_x11_display_text_property_to_text_list (GdkDisplay *display,
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GdkAtom encoding,
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gint format,
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const guchar *text,
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gint length,
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gchar ***list)
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{
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XTextProperty property;
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gint count = 0;
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gint res;
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gchar **local_list;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
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if (list)
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*list = NULL;
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if (gdk_display_is_closed (display))
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return 0;
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property.value = (guchar *)text;
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property.encoding = gdk_x11_atom_to_xatom_for_display (display, encoding);
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property.format = format;
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property.nitems = length;
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res = XmbTextPropertyToTextList (GDK_DISPLAY_XDISPLAY (display), &property,
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&local_list, &count);
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if (res == XNoMemory || res == XLocaleNotSupported || res == XConverterNotFound)
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return 0;
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else
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{
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if (list)
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*list = local_list;
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else
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XFreeStringList (local_list);
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return count;
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}
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}
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/**
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* gdk_x11_free_text_list:
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* @list: the value stored in the @list parameter by
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* a call to gdk_x11_display_text_property_to_text_list().
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*
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* Frees the array of strings created by
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* gdk_x11_display_text_property_to_text_list().
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*
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* Since: 2.24
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*/
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void
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gdk_x11_free_text_list (gchar **list)
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{
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g_return_if_fail (list != NULL);
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XFreeStringList (list);
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}
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static gint
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make_list (const gchar *text,
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gint length,
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gboolean latin1,
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gchar ***list)
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{
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GSList *strings = NULL;
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gint n_strings = 0;
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gint i;
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const gchar *p = text;
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const gchar *q;
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GSList *tmp_list;
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GError *error = NULL;
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while (p < text + length)
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{
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gchar *str;
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q = p;
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while (*q && q < text + length)
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q++;
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if (latin1)
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{
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str = g_convert (p, q - p,
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"UTF-8", "ISO-8859-1",
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NULL, NULL, &error);
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if (!str)
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{
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g_warning ("Error converting selection from STRING: %s",
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error->message);
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g_error_free (error);
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}
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}
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else
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{
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str = g_strndup (p, q - p);
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if (!g_utf8_validate (str, -1, NULL))
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{
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g_warning ("Error converting selection from UTF8_STRING");
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g_free (str);
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str = NULL;
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}
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}
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if (str)
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{
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strings = g_slist_prepend (strings, str);
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n_strings++;
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}
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p = q + 1;
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}
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if (list)
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{
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*list = g_new (gchar *, n_strings + 1);
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(*list)[n_strings] = NULL;
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}
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i = n_strings;
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tmp_list = strings;
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while (tmp_list)
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{
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if (list)
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(*list)[--i] = tmp_list->data;
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else
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g_free (tmp_list->data);
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tmp_list = tmp_list->next;
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}
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g_slist_free (strings);
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return n_strings;
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}
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gint
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_gdk_x11_display_text_property_to_utf8_list (GdkDisplay *display,
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GdkAtom encoding,
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gint format,
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const guchar *text,
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gint length,
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gchar ***list)
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{
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if (encoding == GDK_TARGET_STRING)
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{
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return make_list ((gchar *)text, length, TRUE, list);
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}
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else if (encoding == gdk_atom_intern_static_string ("UTF8_STRING"))
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{
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return make_list ((gchar *)text, length, FALSE, list);
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}
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else
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{
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gchar **local_list;
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gint local_count;
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gint i;
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const gchar *charset = NULL;
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gboolean need_conversion = !g_get_charset (&charset);
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gint count = 0;
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GError *error = NULL;
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/* Probably COMPOUND text, we fall back to Xlib routines
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*/
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local_count = gdk_x11_display_text_property_to_text_list (display,
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encoding,
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format,
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text,
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length,
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&local_list);
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if (list)
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*list = g_new (gchar *, local_count + 1);
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for (i=0; i<local_count; i++)
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{
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/* list contains stuff in our default encoding
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*/
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if (need_conversion)
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{
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gchar *utf = g_convert (local_list[i], -1,
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"UTF-8", charset,
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NULL, NULL, &error);
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if (utf)
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{
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if (list)
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(*list)[count++] = utf;
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else
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g_free (utf);
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}
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else
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{
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g_warning ("Error converting to UTF-8 from '%s': %s",
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charset, error->message);
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g_error_free (error);
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error = NULL;
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}
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}
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else
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{
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if (list)
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{
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if (g_utf8_validate (local_list[i], -1, NULL))
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(*list)[count++] = g_strdup (local_list[i]);
|
|
else
|
|
g_warning ("Error converting selection");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (local_count)
|
|
gdk_x11_free_text_list (local_list);
|
|
|
|
if (list)
|
|
(*list)[count] = NULL;
|
|
|
|
return count;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_display_string_to_compound_text:
|
|
* @display: the #GdkDisplay where the encoding is defined
|
|
* @str: a nul-terminated string
|
|
* @encoding: location to store the encoding atom
|
|
* (to be used as the type for the property)
|
|
* @format: location to store the format of the property
|
|
* @ctext: location to store newly allocated data for the property
|
|
* @length: the length of @text, in bytes
|
|
*
|
|
* Convert a string from the encoding of the current
|
|
* locale into a form suitable for storing in a window property.
|
|
*
|
|
* Returns: 0 upon success, non-zero upon failure
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
gint
|
|
gdk_x11_display_string_to_compound_text (GdkDisplay *display,
|
|
const gchar *str,
|
|
GdkAtom *encoding,
|
|
gint *format,
|
|
guchar **ctext,
|
|
gint *length)
|
|
{
|
|
gint res;
|
|
XTextProperty property;
|
|
|
|
g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
|
|
|
|
if (gdk_display_is_closed (display))
|
|
res = XLocaleNotSupported;
|
|
else
|
|
res = XmbTextListToTextProperty (GDK_DISPLAY_XDISPLAY (display),
|
|
(char **)&str, 1, XCompoundTextStyle,
|
|
&property);
|
|
if (res != Success)
|
|
{
|
|
property.encoding = None;
|
|
property.format = None;
|
|
property.value = NULL;
|
|
property.nitems = 0;
|
|
}
|
|
|
|
if (encoding)
|
|
*encoding = gdk_x11_xatom_to_atom_for_display (display, property.encoding);
|
|
if (format)
|
|
*format = property.format;
|
|
if (ctext)
|
|
*ctext = property.value;
|
|
if (length)
|
|
*length = property.nitems;
|
|
|
|
return res;
|
|
}
|
|
|
|
/* The specifications for COMPOUND_TEXT and STRING specify that C0 and
|
|
* C1 are not allowed except for \n and \t, however the X conversions
|
|
* routines for COMPOUND_TEXT only enforce this in one direction,
|
|
* causing cut-and-paste of \r and \r\n separated text to fail.
|
|
* This routine strips out all non-allowed C0 and C1 characters
|
|
* from the input string and also canonicalizes \r, and \r\n to \n
|
|
*/
|
|
static gchar *
|
|
sanitize_utf8 (const gchar *src,
|
|
gboolean return_latin1)
|
|
{
|
|
gint len = strlen (src);
|
|
GString *result = g_string_sized_new (len);
|
|
const gchar *p = src;
|
|
|
|
while (*p)
|
|
{
|
|
if (*p == '\r')
|
|
{
|
|
p++;
|
|
if (*p == '\n')
|
|
p++;
|
|
|
|
g_string_append_c (result, '\n');
|
|
}
|
|
else
|
|
{
|
|
gunichar ch = g_utf8_get_char (p);
|
|
|
|
if (!((ch < 0x20 && ch != '\t' && ch != '\n') || (ch >= 0x7f && ch < 0xa0)))
|
|
{
|
|
if (return_latin1)
|
|
{
|
|
if (ch <= 0xff)
|
|
g_string_append_c (result, ch);
|
|
else
|
|
g_string_append_printf (result,
|
|
ch < 0x10000 ? "\\u%04x" : "\\U%08x",
|
|
ch);
|
|
}
|
|
else
|
|
{
|
|
char buf[7];
|
|
gint buflen;
|
|
|
|
buflen = g_unichar_to_utf8 (ch, buf);
|
|
g_string_append_len (result, buf, buflen);
|
|
}
|
|
}
|
|
|
|
p = g_utf8_next_char (p);
|
|
}
|
|
}
|
|
|
|
return g_string_free (result, FALSE);
|
|
}
|
|
|
|
gchar *
|
|
_gdk_x11_display_utf8_to_string_target (GdkDisplay *display,
|
|
const gchar *str)
|
|
{
|
|
return sanitize_utf8 (str, TRUE);
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_display_utf8_to_compound_text:
|
|
* @display: a #GdkDisplay
|
|
* @str: a UTF-8 string
|
|
* @encoding: location to store resulting encoding
|
|
* @format: location to store format of the result
|
|
* @ctext: location to store the data of the result
|
|
* @length: location to store the length of the data
|
|
* stored in @ctext
|
|
*
|
|
* Converts from UTF-8 to compound text.
|
|
*
|
|
* Return value: %TRUE if the conversion succeeded,
|
|
* otherwise %FALSE
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
gboolean
|
|
gdk_x11_display_utf8_to_compound_text (GdkDisplay *display,
|
|
const gchar *str,
|
|
GdkAtom *encoding,
|
|
gint *format,
|
|
guchar **ctext,
|
|
gint *length)
|
|
{
|
|
gboolean need_conversion;
|
|
const gchar *charset;
|
|
gchar *locale_str, *tmp_str;
|
|
GError *error = NULL;
|
|
gboolean result;
|
|
|
|
g_return_val_if_fail (str != NULL, FALSE);
|
|
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
|
|
|
|
need_conversion = !g_get_charset (&charset);
|
|
|
|
tmp_str = sanitize_utf8 (str, FALSE);
|
|
|
|
if (need_conversion)
|
|
{
|
|
locale_str = g_convert (tmp_str, -1,
|
|
charset, "UTF-8",
|
|
NULL, NULL, &error);
|
|
g_free (tmp_str);
|
|
|
|
if (!locale_str)
|
|
{
|
|
if (!(error->domain = G_CONVERT_ERROR &&
|
|
error->code == G_CONVERT_ERROR_ILLEGAL_SEQUENCE))
|
|
{
|
|
g_warning ("Error converting from UTF-8 to '%s': %s",
|
|
charset, error->message);
|
|
}
|
|
g_error_free (error);
|
|
|
|
if (encoding)
|
|
*encoding = None;
|
|
if (format)
|
|
*format = None;
|
|
if (ctext)
|
|
*ctext = NULL;
|
|
if (length)
|
|
*length = 0;
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
else
|
|
locale_str = tmp_str;
|
|
|
|
result = gdk_x11_display_string_to_compound_text (display, locale_str,
|
|
encoding, format,
|
|
ctext, length);
|
|
result = (result == Success? TRUE : FALSE);
|
|
|
|
g_free (locale_str);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_free_compound_text:
|
|
* @ctext: The pointer stored in @ctext from a call to
|
|
* gdk_x11_display_string_to_compound_text().
|
|
*
|
|
* Frees the data returned from gdk_x11_display_string_to_compound_text().
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
void
|
|
gdk_x11_free_compound_text (guchar *ctext)
|
|
{
|
|
if (ctext)
|
|
XFree (ctext);
|
|
}
|