edd34c50d9
With the previous preparations in place, it is time to take the plunge. As both the app and the portal use the same small library for handling external windows, port everything at once to avoid the hassle of building and installing two versions of the library. With the portal using GTK4 now, all extensions must port their preference widgets as well. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1495>
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/*
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* Copyright © 2016 Red Hat, Inc
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*
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* This program 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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* Authors:
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* Jonas Ådahl <jadahl@redhat.com>
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*/
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#include <errno.h>
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#include <gdk/gdk.h>
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#ifdef GDK_WINDOWING_X11
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#include <gdk/x11/gdkx.h>
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#include <X11/Xlib.h>
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#endif
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#include <stdlib.h>
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#include "shew-external-window-x11.h"
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static GdkDisplay *x11_display;
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struct _ShewExternalWindowX11
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{
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ShewExternalWindow parent;
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int foreign_xid;
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};
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G_DEFINE_TYPE (ShewExternalWindowX11, shew_external_window_x11,
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SHEW_TYPE_EXTERNAL_WINDOW)
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static GdkDisplay *
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get_x11_display (void)
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{
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if (x11_display)
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return x11_display;
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gdk_set_allowed_backends ("x11");
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x11_display = gdk_display_open (NULL);
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gdk_set_allowed_backends (NULL);
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if (!x11_display)
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g_warning ("Failed to open X11 display");
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return x11_display;
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}
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static gboolean
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check_foreign_xid (GdkDisplay *display,
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int xid)
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{
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gboolean result = FALSE;
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#ifdef GDK_WINDOWING_X11
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XWindowAttributes attrs;
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gdk_x11_display_error_trap_push (display);
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result = XGetWindowAttributes (GDK_DISPLAY_XDISPLAY (display), xid, &attrs);
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if (gdk_x11_display_error_trap_pop (display))
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return FALSE;
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#endif
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return result;
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}
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ShewExternalWindowX11 *
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shew_external_window_x11_new (const char *handle_str)
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{
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ShewExternalWindowX11 *external_window_x11;
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GdkDisplay *display;
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int xid;
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display = get_x11_display ();
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if (!display)
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{
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g_warning ("No X display connection, ignoring X11 parent");
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return NULL;
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}
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errno = 0;
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xid = strtol (handle_str, NULL, 16);
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if (errno != 0)
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{
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g_warning ("Failed to reference external X11 window, invalid XID %s", handle_str);
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return NULL;
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}
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if (!check_foreign_xid (display, xid))
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{
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g_warning ("Failed to find foreign window for XID %d", xid);
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return NULL;
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}
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external_window_x11 = g_object_new (SHEW_TYPE_EXTERNAL_WINDOW_X11,
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"display", display,
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NULL);
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external_window_x11->foreign_xid = xid;
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return external_window_x11;
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}
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static void
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shew_external_window_x11_set_parent_of (ShewExternalWindow *external_window,
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GdkSurface *child_surface)
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{
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ShewExternalWindowX11 *external_window_x11 =
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SHEW_EXTERNAL_WINDOW_X11 (external_window);
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#ifdef GDK_WINDOWING_X11
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XSetTransientForHint (GDK_SURFACE_XDISPLAY (child_surface),
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GDK_SURFACE_XID (child_surface),
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external_window_x11->foreign_xid);
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#endif
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}
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static void
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shew_external_window_x11_init (ShewExternalWindowX11 *external_window_x11)
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{
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}
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static void
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shew_external_window_x11_class_init (ShewExternalWindowX11Class *klass)
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{
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ShewExternalWindowClass *external_window_class = SHEW_EXTERNAL_WINDOW_CLASS (klass);
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external_window_class->set_parent_of = shew_external_window_x11_set_parent_of;
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}
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