mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-10 10:50:10 +00:00
c3503fcc84
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.
479 lines
13 KiB
C
479 lines
13 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GTK+ Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gdkdeviceprivate.h"
|
|
#include "gdkinternals.h"
|
|
#include "gdkintl.h"
|
|
#include "gdkasync.h"
|
|
#include "gdkdisplay-x11.h"
|
|
#include "gdkprivate-x11.h"
|
|
|
|
#include <glib/gprintf.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <errno.h>
|
|
|
|
#include <X11/Xatom.h>
|
|
#include <X11/Xlib.h>
|
|
#include <X11/Xutil.h>
|
|
|
|
#ifdef HAVE_XKB
|
|
#include <X11/XKBlib.h>
|
|
#endif
|
|
|
|
/**
|
|
* SECTION:x_interaction
|
|
* @Short_description: X backend-specific functions
|
|
* @Title: X Window System Interaction
|
|
*
|
|
* The functions in this section are specific to the GDK X11 backend.
|
|
* To use them, you need to include the `<gdk/gdkx.h>` header and use
|
|
* the X11-specific pkg-config files to build your application (either
|
|
* `gdk-x11-3.0` or `gtk+-x11-3.0`).
|
|
*
|
|
* To make your code compile with other GDK backends, guard backend-specific
|
|
* calls by an ifdef as follows. Since GDK may be built with multiple
|
|
* backends, you should also check for the backend that is in use (e.g. by
|
|
* using the GDK_IS_X11_DISPLAY() macro).
|
|
* |[
|
|
* #ifdef GDK_WINDOWING_X11
|
|
* if (GDK_IS_X11_DISPLAY (display))
|
|
* {
|
|
* // make X11-specific calls here
|
|
* }
|
|
* else
|
|
* #endif
|
|
* #ifdef GDK_WINDOWING_QUARTZ
|
|
* if (GDK_IS_QUARTZ_DISPLAY (display))
|
|
* {
|
|
* // make Quartz-specific calls here
|
|
* }
|
|
* else
|
|
* #endif
|
|
* g_error ("Unsupported GDK backend");
|
|
* ]|
|
|
*/
|
|
|
|
typedef struct _GdkPredicate GdkPredicate;
|
|
|
|
struct _GdkPredicate
|
|
{
|
|
GdkEventFunc func;
|
|
gpointer data;
|
|
};
|
|
|
|
/* non-GDK previous error handler */
|
|
typedef int (*GdkXErrorHandler) (Display *, XErrorEvent *);
|
|
static GdkXErrorHandler _gdk_old_error_handler;
|
|
/* number of times we've pushed the GDK error handler */
|
|
static int _gdk_error_handler_push_count = 0;
|
|
|
|
/*
|
|
* Private function declarations
|
|
*/
|
|
|
|
static int gdk_x_error (Display *display,
|
|
XErrorEvent *error);
|
|
static int gdk_x_io_error (Display *display);
|
|
|
|
void
|
|
_gdk_x11_windowing_init (void)
|
|
{
|
|
XSetErrorHandler (gdk_x_error);
|
|
XSetIOErrorHandler (gdk_x_io_error);
|
|
|
|
gdk_window_add_filter (NULL,
|
|
_gdk_wm_protocols_filter,
|
|
NULL);
|
|
gdk_window_add_filter (NULL,
|
|
_gdk_x11_dnd_filter,
|
|
NULL);
|
|
}
|
|
|
|
GdkGrabStatus
|
|
_gdk_x11_convert_grab_status (gint status)
|
|
{
|
|
switch (status)
|
|
{
|
|
case GrabSuccess:
|
|
return GDK_GRAB_SUCCESS;
|
|
case AlreadyGrabbed:
|
|
return GDK_GRAB_ALREADY_GRABBED;
|
|
case GrabInvalidTime:
|
|
return GDK_GRAB_INVALID_TIME;
|
|
case GrabNotViewable:
|
|
return GDK_GRAB_NOT_VIEWABLE;
|
|
case GrabFrozen:
|
|
return GDK_GRAB_FROZEN;
|
|
}
|
|
|
|
g_assert_not_reached();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* _gdk_x11_window_grab_check_unmap:
|
|
* @window: a #GdkWindow
|
|
* @serial: serial from Unmap event (or from NextRequest(display)
|
|
* if the unmap is being done by this client.)
|
|
*
|
|
* Checks to see if an unmap request or event causes the current
|
|
* grab window to become not viewable, and if so, clear the
|
|
* the pointer we keep to it.
|
|
**/
|
|
void
|
|
_gdk_x11_window_grab_check_unmap (GdkWindow *window,
|
|
gulong serial)
|
|
{
|
|
GdkDisplay *display = gdk_window_get_display (window);
|
|
GdkDeviceManager *device_manager;
|
|
GList *devices, *d;
|
|
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
|
device_manager = gdk_display_get_device_manager (display);
|
|
|
|
/* Get all devices */
|
|
devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
|
|
devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
|
|
devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
|
|
G_GNUC_END_IGNORE_DEPRECATIONS;
|
|
|
|
/* End all grabs on the newly hidden window */
|
|
for (d = devices; d; d = d->next)
|
|
_gdk_display_end_device_grab (display, d->data, serial, window, TRUE);
|
|
|
|
g_list_free (devices);
|
|
}
|
|
|
|
/*
|
|
* _gdk_x11_window_grab_check_destroy:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Checks to see if window is the current grab window, and if
|
|
* so, clear the current grab window.
|
|
**/
|
|
void
|
|
_gdk_x11_window_grab_check_destroy (GdkWindow *window)
|
|
{
|
|
GdkDisplay *display = gdk_window_get_display (window);
|
|
GdkDeviceManager *device_manager;
|
|
GdkDeviceGrabInfo *grab;
|
|
GList *devices, *d;
|
|
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
|
device_manager = gdk_display_get_device_manager (display);
|
|
|
|
/* Get all devices */
|
|
devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
|
|
devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
|
|
devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
|
|
G_GNUC_END_IGNORE_DEPRECATIONS;
|
|
|
|
for (d = devices; d; d = d->next)
|
|
{
|
|
/* Make sure there is no lasting grab in this native window */
|
|
grab = _gdk_display_get_last_device_grab (display, d->data);
|
|
|
|
if (grab && grab->native_window == window)
|
|
{
|
|
/* We don't know the actual serial to end, but it
|
|
doesn't really matter as this only happens
|
|
after we get told of the destroy from the
|
|
server so we know its ended in the server,
|
|
just make sure its ended. */
|
|
grab->serial_end = grab->serial_start;
|
|
grab->implicit_ungrab = TRUE;
|
|
}
|
|
}
|
|
|
|
g_list_free (devices);
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_x_io_error
|
|
*
|
|
* The X I/O error handling routine.
|
|
*
|
|
* Arguments:
|
|
* "display" is the X display the error orignated from.
|
|
*
|
|
* Results:
|
|
* An X I/O error basically means we lost our connection
|
|
* to the X server. There is not much we can do to
|
|
* continue, so simply print an error message and exit.
|
|
*
|
|
* Side effects:
|
|
*
|
|
*--------------------------------------------------------------
|
|
*/
|
|
|
|
static int
|
|
gdk_x_io_error (Display *display)
|
|
{
|
|
/* This is basically modelled after the code in XLib. We need
|
|
* an explicit error handler here, so we can disable our atexit()
|
|
* which would otherwise cause a nice segfault.
|
|
* We g_debug() instead of g_warning(), because g_warning()
|
|
* could possibly be redirected to the log
|
|
*/
|
|
g_debug ("%s: Fatal IO error %d (%s) on X server %s.\n",
|
|
g_get_prgname (),
|
|
errno, g_strerror (errno),
|
|
display ? DisplayString (display) : gdk_get_display_arg_name ());
|
|
|
|
_exit (1);
|
|
}
|
|
|
|
/* X error handler. Keep the name the same because people are used to
|
|
* breaking on it in the debugger.
|
|
*/
|
|
static int
|
|
gdk_x_error (Display *xdisplay,
|
|
XErrorEvent *error)
|
|
{
|
|
if (error->error_code)
|
|
{
|
|
GdkDisplay *error_display;
|
|
GdkDisplayManager *manager;
|
|
GSList *displays;
|
|
|
|
/* Figure out which GdkDisplay if any got the error. */
|
|
error_display = NULL;
|
|
manager = gdk_display_manager_get ();
|
|
displays = gdk_display_manager_list_displays (manager);
|
|
while (displays != NULL)
|
|
{
|
|
GdkX11Display *gdk_display = displays->data;
|
|
|
|
if (GDK_IS_X11_DISPLAY (gdk_display) &&
|
|
xdisplay == gdk_display->xdisplay)
|
|
{
|
|
error_display = GDK_DISPLAY (gdk_display);
|
|
g_slist_free (displays);
|
|
displays = NULL;
|
|
}
|
|
else
|
|
{
|
|
displays = g_slist_delete_link (displays, displays);
|
|
}
|
|
}
|
|
|
|
if (error_display == NULL)
|
|
{
|
|
/* Error on an X display not opened by GDK. Ignore. */
|
|
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
_gdk_x11_display_error_event (error_display, error);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
_gdk_x11_error_handler_push (void)
|
|
{
|
|
GdkXErrorHandler previous;
|
|
|
|
previous = XSetErrorHandler (gdk_x_error);
|
|
|
|
if (_gdk_error_handler_push_count > 0)
|
|
{
|
|
if (previous != gdk_x_error)
|
|
g_warning ("XSetErrorHandler() called with a GDK error trap pushed. Don't do that.");
|
|
}
|
|
else
|
|
{
|
|
_gdk_old_error_handler = previous;
|
|
}
|
|
|
|
_gdk_error_handler_push_count += 1;
|
|
}
|
|
|
|
void
|
|
_gdk_x11_error_handler_pop (void)
|
|
{
|
|
g_return_if_fail (_gdk_error_handler_push_count > 0);
|
|
|
|
_gdk_error_handler_push_count -= 1;
|
|
|
|
if (_gdk_error_handler_push_count == 0)
|
|
{
|
|
XSetErrorHandler (_gdk_old_error_handler);
|
|
_gdk_old_error_handler = NULL;
|
|
}
|
|
}
|
|
|
|
gint
|
|
_gdk_x11_display_send_xevent (GdkDisplay *display,
|
|
Window window,
|
|
gboolean propagate,
|
|
glong event_mask,
|
|
XEvent *event_send)
|
|
{
|
|
gboolean result;
|
|
|
|
if (gdk_display_is_closed (display))
|
|
return FALSE;
|
|
|
|
gdk_x11_display_error_trap_push (display);
|
|
result = XSendEvent (GDK_DISPLAY_XDISPLAY (display), window,
|
|
propagate, event_mask, event_send);
|
|
XSync (GDK_DISPLAY_XDISPLAY (display), False);
|
|
|
|
if (gdk_x11_display_error_trap_pop (display))
|
|
return FALSE;
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
_gdk_x11_region_get_xrectangles (const cairo_region_t *region,
|
|
gint x_offset,
|
|
gint y_offset,
|
|
gint scale,
|
|
XRectangle **rects,
|
|
gint *n_rects)
|
|
{
|
|
XRectangle *rectangles;
|
|
cairo_rectangle_int_t box;
|
|
gint i, n;
|
|
|
|
n = cairo_region_num_rectangles (region);
|
|
rectangles = g_new (XRectangle, n);
|
|
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
cairo_region_get_rectangle (region, i, &box);
|
|
rectangles[i].x = CLAMP ((box.x + x_offset) * scale, G_MINSHORT, G_MAXSHORT);
|
|
rectangles[i].y = CLAMP ((box.y + y_offset) * scale, G_MINSHORT, G_MAXSHORT);
|
|
rectangles[i].width = CLAMP (box.width * scale, G_MINSHORT, G_MAXSHORT);
|
|
rectangles[i].height = CLAMP (box.height * scale, G_MINSHORT, G_MAXSHORT);
|
|
}
|
|
|
|
*n_rects = n;
|
|
*rects = rectangles;
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_grab_server:
|
|
*
|
|
* Call gdk_x11_display_grab() on the default display.
|
|
* To ungrab the server again, use gdk_x11_ungrab_server().
|
|
*
|
|
* gdk_x11_grab_server()/gdk_x11_ungrab_server() calls can be nested.
|
|
**/
|
|
void
|
|
gdk_x11_grab_server (void)
|
|
{
|
|
gdk_x11_display_grab (gdk_display_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_ungrab_server:
|
|
*
|
|
* Ungrab the default display after it has been grabbed with
|
|
* gdk_x11_grab_server().
|
|
**/
|
|
void
|
|
gdk_x11_ungrab_server (void)
|
|
{
|
|
gdk_x11_display_ungrab (gdk_display_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_get_default_screen:
|
|
*
|
|
* Gets the default GTK+ screen number.
|
|
*
|
|
* Returns: returns the screen number specified by
|
|
* the --display command line option or the DISPLAY environment
|
|
* variable when gdk_init() calls XOpenDisplay().
|
|
**/
|
|
gint
|
|
gdk_x11_get_default_screen (void)
|
|
{
|
|
return gdk_x11_screen_get_number (gdk_screen_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_get_default_root_xwindow:
|
|
*
|
|
* Gets the root window of the default screen
|
|
* (see gdk_x11_get_default_screen()).
|
|
*
|
|
* Returns: an Xlib Window.
|
|
**/
|
|
Window
|
|
gdk_x11_get_default_root_xwindow (void)
|
|
{
|
|
return GDK_SCREEN_XROOTWIN (gdk_screen_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_get_default_xdisplay:
|
|
*
|
|
* Gets the default GTK+ display.
|
|
*
|
|
* Returns: (transfer none): the Xlib Display* for
|
|
* the display specified in the `--display` command
|
|
* line option or the `DISPLAY` environment variable.
|
|
**/
|
|
Display *
|
|
gdk_x11_get_default_xdisplay (void)
|
|
{
|
|
return GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_x11_get_parent_relative_pattern:
|
|
*
|
|
* Used with gdk_window_set_background_pattern() to inherit background from
|
|
* parent window. Useful for imitating transparency when compositing is not
|
|
* available. Otherwise behaves like a transparent pattern.
|
|
*
|
|
* Since: 3.24.2
|
|
*
|
|
* Deprecated: 3.24: Don't use this function
|
|
**/
|
|
cairo_pattern_t *
|
|
gdk_x11_get_parent_relative_pattern (void)
|
|
{
|
|
static cairo_pattern_t *parent_relative_pattern = NULL;
|
|
|
|
if (G_UNLIKELY (parent_relative_pattern == NULL))
|
|
parent_relative_pattern = cairo_pattern_create_rgba (0.0, 0.0, 0.0, 0.0);
|
|
|
|
return parent_relative_pattern;
|
|
}
|