forked from AuroraMiddleware/gtk
6f11165dd1
The condition we check for to catch X servers going away may not be accurate anymore, and the warning shows up in logs, causing customers to be concerned. So, be quiet by default, unless the user explicitly asked for a message.
332 lines
9.0 KiB
C
332 lines
9.0 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, see <http://www.gnu.org/licenses/>.
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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 "gdkdeviceprivate.h"
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#include "gdkinternals.h"
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#include "gdkintl.h"
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#include "gdkasync.h"
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#include "gdkdisplay-x11.h"
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#include "gdkprivate-x11.h"
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#include <glib/gprintf.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include <errno.h>
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#include <X11/Xatom.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#ifdef HAVE_XKB
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#include <X11/XKBlib.h>
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#endif
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/* non-GDK previous error handler */
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typedef int (*GdkXErrorHandler) (Display *, XErrorEvent *);
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static GdkXErrorHandler _gdk_old_error_handler;
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/* number of times we've pushed the GDK error handler */
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static int _gdk_error_handler_push_count = 0;
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/*
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* Private function declarations
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*/
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static int gdk_x_error (Display *display,
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XErrorEvent *error);
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static int gdk_x_io_error (Display *display);
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void
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_gdk_x11_surfaceing_init (void)
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{
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XSetErrorHandler (gdk_x_error);
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XSetIOErrorHandler (gdk_x_io_error);
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}
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GdkGrabStatus
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_gdk_x11_convert_grab_status (int status)
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{
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switch (status)
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{
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case GrabSuccess:
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return GDK_GRAB_SUCCESS;
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case AlreadyGrabbed:
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return GDK_GRAB_ALREADY_GRABBED;
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case GrabInvalidTime:
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return GDK_GRAB_INVALID_TIME;
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case GrabNotViewable:
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return GDK_GRAB_NOT_VIEWABLE;
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case GrabFrozen:
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return GDK_GRAB_FROZEN;
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default:
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g_assert_not_reached();
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return 0;
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}
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}
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/*
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* _gdk_x11_surface_grab_check_unmap:
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* @surface: a #GdkSurface
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* @serial: serial from Unmap event (or from NextRequest(display)
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* if the unmap is being done by this client.)
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*
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* Checks to see if an unmap request or event causes the current
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* grab surface to become not viewable, and if so, clear the
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* the pointer we keep to it.
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**/
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void
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_gdk_x11_surface_grab_check_unmap (GdkSurface *surface,
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gulong serial)
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{
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GdkDisplay *display = gdk_surface_get_display (surface);
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GdkSeat *seat;
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GList *devices, *d;
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seat = gdk_display_get_default_seat (display);
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devices = gdk_seat_get_devices (seat, GDK_SEAT_CAPABILITY_ALL);
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devices = g_list_prepend (devices, gdk_seat_get_keyboard (seat));
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devices = g_list_prepend (devices, gdk_seat_get_pointer (seat));
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/* End all grabs on the newly hidden surface */
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for (d = devices; d; d = d->next)
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_gdk_display_end_device_grab (display, d->data, serial, surface, TRUE);
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g_list_free (devices);
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}
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/*
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* _gdk_x11_surface_grab_check_destroy:
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* @surface: a #GdkSurface
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*
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* Checks to see if surface is the current grab surface, and if
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* so, clear the current grab surface.
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**/
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void
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_gdk_x11_surface_grab_check_destroy (GdkSurface *surface)
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{
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GdkDisplay *display = gdk_surface_get_display (surface);
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GdkSeat *seat;
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GdkDeviceGrabInfo *grab;
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GList *devices, *d;
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seat = gdk_display_get_default_seat (display);
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devices = gdk_seat_get_devices (seat, GDK_SEAT_CAPABILITY_ALL);
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devices = g_list_prepend (devices, gdk_seat_get_keyboard (seat));
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devices = g_list_prepend (devices, gdk_seat_get_pointer (seat));
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for (d = devices; d; d = d->next)
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{
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/* Make sure there is no lasting grab in this native surface */
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grab = _gdk_display_get_last_device_grab (display, d->data);
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if (grab && grab->surface == surface)
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{
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/* We don't know the actual serial to end, but it
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doesn't really matter as this only happens
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after we get told of the destroy from the
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server so we know its ended in the server,
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just make sure its ended. */
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grab->serial_end = grab->serial_start;
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grab->implicit_ungrab = TRUE;
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}
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}
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g_list_free (devices);
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}
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/*
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*--------------------------------------------------------------
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* gdk_x_io_error
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*
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* The X I/O error handling routine.
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*
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* Arguments:
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* "display" is the X display the error originated from.
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*
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* Results:
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* An X I/O error basically means we lost our connection
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* to the X server. There is not much we can do to
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* continue, so simply print an error message and exit.
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*
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* Side effects:
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*
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*--------------------------------------------------------------
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*/
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static int
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gdk_x_io_error (Display *display)
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{
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/* This is basically modelled after the code in XLib. We need
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* an explicit error handler here, so we can disable our atexit()
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* which would otherwise cause a nice segfault.
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* We g_debug() instead of g_warning(), because g_warning()
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* could possibly be redirected to the log
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*/
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g_debug ("%s: Fatal IO error %d (%s) on X server %s.\n",
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g_get_prgname (),
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errno, g_strerror (errno),
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display ? DisplayString (display) : "");
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_exit (1);
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}
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/* X error handler. Keep the name the same because people are used to
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* breaking on it in the debugger.
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*/
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static int
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gdk_x_error (Display *xdisplay,
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XErrorEvent *error)
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{
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if (error->error_code)
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{
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GdkDisplay *error_display;
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GdkDisplayManager *manager;
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GSList *displays;
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/* Figure out which GdkDisplay if any got the error. */
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error_display = NULL;
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manager = gdk_display_manager_get ();
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displays = gdk_display_manager_list_displays (manager);
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while (displays != NULL)
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{
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GdkX11Display *gdk_display = displays->data;
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if (GDK_IS_X11_DISPLAY (gdk_display) &&
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xdisplay == gdk_display->xdisplay)
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{
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error_display = GDK_DISPLAY (gdk_display);
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g_slist_free (displays);
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displays = NULL;
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}
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else
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{
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displays = g_slist_delete_link (displays, displays);
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}
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}
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if (error_display == NULL)
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{
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/* Error on an X display not opened by GDK. Ignore. */
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return 0;
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}
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else
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{
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_gdk_x11_display_error_event (error_display, error);
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}
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}
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return 0;
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}
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void
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_gdk_x11_error_handler_push (void)
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{
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GdkXErrorHandler previous;
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previous = XSetErrorHandler (gdk_x_error);
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if (_gdk_error_handler_push_count > 0)
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{
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if (previous != gdk_x_error)
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g_warning ("XSetErrorHandler() called with a GDK error trap pushed. Don't do that.");
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}
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else
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{
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_gdk_old_error_handler = previous;
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}
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_gdk_error_handler_push_count += 1;
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}
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void
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_gdk_x11_error_handler_pop (void)
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{
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g_return_if_fail (_gdk_error_handler_push_count > 0);
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_gdk_error_handler_push_count -= 1;
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if (_gdk_error_handler_push_count == 0)
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{
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XSetErrorHandler (_gdk_old_error_handler);
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_gdk_old_error_handler = NULL;
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}
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}
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int
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_gdk_x11_display_send_xevent (GdkDisplay *display,
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Window window,
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gboolean propagate,
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glong event_mask,
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XEvent *event_send)
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{
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gboolean result;
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if (gdk_display_is_closed (display))
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return FALSE;
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gdk_x11_display_error_trap_push (display);
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result = XSendEvent (GDK_DISPLAY_XDISPLAY (display), window,
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propagate, event_mask, event_send);
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XSync (GDK_DISPLAY_XDISPLAY (display), False);
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if (gdk_x11_display_error_trap_pop (display))
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return FALSE;
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return result;
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}
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void
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_gdk_x11_region_get_xrectangles (const cairo_region_t *region,
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int x_offset,
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int y_offset,
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int scale,
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XRectangle **rects,
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int *n_rects)
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{
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XRectangle *rectangles;
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cairo_rectangle_int_t box;
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int i, n;
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n = cairo_region_num_rectangles (region);
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rectangles = g_new (XRectangle, n);
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for (i = 0; i < n; i++)
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{
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cairo_region_get_rectangle (region, i, &box);
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rectangles[i].x = CLAMP ((box.x + x_offset) * scale, G_MINSHORT, G_MAXSHORT);
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rectangles[i].y = CLAMP ((box.y + y_offset) * scale, G_MINSHORT, G_MAXSHORT);
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rectangles[i].width = CLAMP (box.width * scale, G_MINSHORT, G_MAXSHORT);
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rectangles[i].height = CLAMP (box.height * scale, G_MINSHORT, G_MAXSHORT);
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}
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*n_rects = n;
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*rects = rectangles;
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}
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