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/*
* Copyright © 2016 Red Hat, Inc
*
* This program 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/>.
*
* Authors:
* Jonas Ådahl <jadahl@redhat.com>
*/
#include <errno.h>
#include <gdk/gdk.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/x11/gdkx.h>
#include <X11/Xlib.h>
#endif
#include <stdlib.h>
#include "shew-external-window-x11.h"
static GdkDisplay *x11_display;
struct _ShewExternalWindowX11
{
ShewExternalWindow parent;
int foreign_xid;
};
G_DEFINE_TYPE (ShewExternalWindowX11, shew_external_window_x11,
SHEW_TYPE_EXTERNAL_WINDOW)
static GdkDisplay *
get_x11_display (void)
{
if (x11_display)
return x11_display;
gdk_set_allowed_backends ("x11");
x11_display = gdk_display_open (NULL);
gdk_set_allowed_backends (NULL);
if (!x11_display)
g_warning ("Failed to open X11 display");
return x11_display;
}
static gboolean
check_foreign_xid (GdkDisplay *display,
int xid)
{
gboolean result = FALSE;
#ifdef GDK_WINDOWING_X11
XWindowAttributes attrs;
gdk_x11_display_error_trap_push (display);
result = XGetWindowAttributes (GDK_DISPLAY_XDISPLAY (display), xid, &attrs);
if (gdk_x11_display_error_trap_pop (display))
return FALSE;
#endif
return result;
}
ShewExternalWindowX11 *
shew_external_window_x11_new (const char *handle_str)
{
ShewExternalWindowX11 *external_window_x11;
GdkDisplay *display;
int xid;
display = get_x11_display ();
if (!display)
{
g_warning ("No X display connection, ignoring X11 parent");
return NULL;
}
errno = 0;
xid = strtol (handle_str, NULL, 16);
if (errno != 0)
{
g_warning ("Failed to reference external X11 window, invalid XID %s", handle_str);
return NULL;
}
if (!check_foreign_xid (display, xid))
{
g_warning ("Failed to find foreign window for XID %d", xid);
return NULL;
}
external_window_x11 = g_object_new (SHEW_TYPE_EXTERNAL_WINDOW_X11,
"display", display,
NULL);
external_window_x11->foreign_xid = xid;
return external_window_x11;
}
static void
shew_external_window_x11_set_parent_of (ShewExternalWindow *external_window,
GdkSurface *child_surface)
{
ShewExternalWindowX11 *external_window_x11 =
SHEW_EXTERNAL_WINDOW_X11 (external_window);
#ifdef GDK_WINDOWING_X11
XSetTransientForHint (GDK_SURFACE_XDISPLAY (child_surface),
GDK_SURFACE_XID (child_surface),
external_window_x11->foreign_xid);
#endif
}
static void
shew_external_window_x11_init (ShewExternalWindowX11 *external_window_x11)
{
}
static void
shew_external_window_x11_class_init (ShewExternalWindowX11Class *klass)
{
ShewExternalWindowClass *external_window_class = SHEW_EXTERNAL_WINDOW_CLASS (klass);
external_window_class->set_parent_of = shew_external_window_x11_set_parent_of;
}
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