forked from AuroraMiddleware/gtk
461 lines
12 KiB
C
461 lines
12 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;
|
|
default:
|
|
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);
|
|
GdkSeat *seat;
|
|
GList *devices, *d;
|
|
|
|
seat = gdk_display_get_default_seat (display);
|
|
|
|
devices = gdk_seat_get_slaves (seat, GDK_SEAT_CAPABILITY_ALL);
|
|
devices = g_list_prepend (devices, gdk_seat_get_keyboard (seat));
|
|
devices = g_list_prepend (devices, gdk_seat_get_pointer (seat));
|
|
|
|
/* 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);
|
|
GdkSeat *seat;
|
|
GdkDeviceGrabInfo *grab;
|
|
GList *devices, *d;
|
|
|
|
seat = gdk_display_get_default_seat (display);
|
|
|
|
devices = gdk_seat_get_slaves (seat, GDK_SEAT_CAPABILITY_ALL);
|
|
devices = g_list_prepend (devices, gdk_seat_get_keyboard (seat));
|
|
devices = g_list_prepend (devices, gdk_seat_get_pointer (seat));
|
|
|
|
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 fprintf(stderr, instead of g_warning() because g_warning()
|
|
* could possibly be redirected to a dialog
|
|
*/
|
|
if (errno == EPIPE)
|
|
{
|
|
g_message ("The application '%s' lost its connection to the display %s;\n"
|
|
"most likely the X server was shut down or you killed/destroyed\n"
|
|
"the application.\n",
|
|
g_get_prgname (),
|
|
display ? DisplayString (display) : NULL);
|
|
}
|
|
else
|
|
{
|
|
g_message ("%s: Fatal IO error %d (%s) on X server %s.\n",
|
|
g_get_prgname (),
|
|
errno, g_strerror (errno),
|
|
display ? DisplayString (display) : NULL);
|
|
}
|
|
|
|
_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_screen_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 ());
|
|
}
|