gtk/gtksocket-stub.c gtk/gtkplug-stub.c gtk/gtksocket-x11.c

2005-07-21  Tor Lillqvist  <tml@novell.com>

	* gtk/gtksocket-stub.c
	* gtk/gtkplug-stub.c
	* gtk/gtksocket-x11.c
	* gtk/gtkplug-x11.c
	* gtk/gtksocket-win32.c
	* gtk/gtkplug-win32.c
	* gtk/gtkwin32embed.h
	* gtk/gtkwin32embed.c: New files, containing the backend-specific
	parts of GtkPlug/Socket.

1 files changed, 328 insertions, 0 deletions

diff --git a/gtk/gtkplug-x11.c b/gtk/gtkplug-x11.c
new file mode 100644
index 0000000000..c2dff4a250
--- /dev/null
+++ b/gtk/gtkplug-x11.c
@@ -0,0 +1,328 @@
+/* GTK - The GIMP Toolkit
+ * 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, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* By Owen Taylor <otaylor@gtk.org>              98/4/4 */
+
+/*
+ * 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 "gtkalias.h"
+#include "gtkmain.h"
+#include "gtkmarshalers.h"
+#include "gtkplug.h"
+#include "gtkprivate.h"
+#include "gtkplugprivate.h"
+
+#include "x11/gdkx.h"
+
+#include "gtkxembed.h"
+
+static void xembed_set_info            (GdkWindow     *window,
+					unsigned long  flags);
+
+GdkNativeWindow
+_gtk_plug_windowing_get_id (GtkPlug *plug)
+{
+  return GDK_WINDOW_XWINDOW (GTK_WIDGET (plug)->window);
+}
+
+void
+_gtk_plug_windowing_realize_toplevel (GtkPlug *plug)
+{
+  xembed_set_info (GTK_WIDGET (plug)->window, 0);
+}
+
+void
+_gtk_plug_windowing_map_toplevel (GtkPlug *plug)
+{
+  xembed_set_info (GTK_WIDGET (plug)->window, XEMBED_MAPPED);
+}
+
+void
+_gtk_plug_windowing_unmap_toplevel (GtkPlug *plug)
+{
+  xembed_set_info (GTK_WIDGET (plug)->window, 0);
+}
+
+void
+_gtk_plug_windowing_set_focus (GtkPlug *plug)
+{
+  _gtk_xembed_send_message (plug->socket_window,
+			    XEMBED_REQUEST_FOCUS, 0, 0, 0);
+}
+
+void
+_gtk_plug_windowing_add_grabbed_key (GtkPlug        *plug,
+				     guint           accelerator_key,
+				     GdkModifierType accelerator_mods)
+{
+  _gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_GRAB_KEY, 0, 
+			    accelerator_key, accelerator_mods);
+}
+
+void
+_gtk_plug_windowing_remove_grabbed_key (GtkPlug        *plug,
+					guint           accelerator_key,
+					GdkModifierType accelerator_mods)
+{
+  _gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_UNGRAB_KEY, 0, 
+			    accelerator_key, accelerator_mods);
+}
+
+void
+_gtk_plug_windowing_focus_to_parent (GtkPlug         *plug,
+				     GtkDirectionType direction)
+{
+  XEmbedMessageType message = XEMBED_FOCUS_PREV; /* Quiet GCC */
+  
+  switch (direction)
+    {
+    case GTK_DIR_UP:
+    case GTK_DIR_LEFT:
+    case GTK_DIR_TAB_BACKWARD:
+      message = XEMBED_FOCUS_PREV;
+      break;
+    case GTK_DIR_DOWN:
+    case GTK_DIR_RIGHT:
+    case GTK_DIR_TAB_FORWARD:
+      message = XEMBED_FOCUS_NEXT;
+      break;
+    }
+  
+  _gtk_xembed_send_focus_message (plug->socket_window, message, 0);
+}
+
+static void
+xembed_set_info (GdkWindow     *window,
+		 unsigned long  flags)
+{
+  GdkDisplay *display = gdk_drawable_get_display (window);
+  unsigned long buffer[2];
+
+  Atom xembed_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED_INFO");
+
+  buffer[0] = GTK_XEMBED_PROTOCOL_VERSION;
+  buffer[1] = flags;
+
+  XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
+		   GDK_WINDOW_XWINDOW (window),
+		   xembed_info_atom, xembed_info_atom, 32,
+		   PropModeReplace,
+		   (unsigned char *)buffer, 2);
+}
+
+static void
+handle_xembed_message (GtkPlug           *plug,
+		       XEmbedMessageType  message,
+		       glong              detail,
+		       glong              data1,
+		       glong              data2,
+		       guint32            time)
+{
+  GtkWindow *window = GTK_WINDOW (plug);
+
+  GTK_NOTE (PLUGSOCKET,
+	    g_message ("GtkPlug: %s received", _gtk_xembed_message_name (message)));
+  
+  switch (message)
+    {
+    case XEMBED_EMBEDDED_NOTIFY:
+      break;
+    case XEMBED_WINDOW_ACTIVATE:
+      _gtk_window_set_is_active (window, TRUE);
+      break;
+    case XEMBED_WINDOW_DEACTIVATE:
+      _gtk_window_set_is_active (window, FALSE);
+      break;
+      
+    case XEMBED_MODALITY_ON:
+      _gtk_plug_handle_modality_on (plug);
+      break;
+    case XEMBED_MODALITY_OFF:
+      _gtk_plug_handle_modality_off (plug);
+      break;
+
+    case XEMBED_FOCUS_IN:
+      _gtk_window_set_has_toplevel_focus (window, TRUE);
+      switch (detail)
+	{
+	case XEMBED_FOCUS_FIRST:
+	  _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_FORWARD);
+	  break;
+	case XEMBED_FOCUS_LAST:
+	  _gtk_plug_focus_first_last (plug, GTK_DIR_TAB_BACKWARD);
+	  break;
+	case XEMBED_FOCUS_CURRENT:
+	  break;
+	}
+      break;
+
+    case XEMBED_FOCUS_OUT:
+      _gtk_window_set_has_toplevel_focus (window, FALSE);
+      break;
+      
+    case XEMBED_GRAB_KEY:
+    case XEMBED_UNGRAB_KEY:
+    case XEMBED_GTK_GRAB_KEY:
+    case XEMBED_GTK_UNGRAB_KEY:
+    case XEMBED_REQUEST_FOCUS:
+    case XEMBED_FOCUS_NEXT:
+    case XEMBED_FOCUS_PREV:
+      g_warning ("GtkPlug: Invalid _XEMBED message %s received", _gtk_xembed_message_name (message));
+      break;
+      
+    default:
+      GTK_NOTE(PLUGSOCKET,
+	       g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
+      break;
+    }
+}
+
+GdkFilterReturn
+_gtk_plug_windowing_filter_func (GdkXEvent *gdk_xevent,
+				 GdkEvent  *event,
+				 gpointer   data)
+{
+  GdkScreen *screen = gdk_drawable_get_screen (event->any.window);
+  GdkDisplay *display = gdk_screen_get_display (screen);
+  GtkPlug *plug = GTK_PLUG (data);
+  XEvent *xevent = (XEvent *)gdk_xevent;
+
+  GdkFilterReturn return_val;
+  
+  return_val = GDK_FILTER_CONTINUE;
+
+  switch (xevent->type)
+    {
+    case ClientMessage:
+      if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "_XEMBED"))
+	{
+	  _gtk_xembed_push_message (xevent);
+	  handle_xembed_message (plug,
+				 xevent->xclient.data.l[1],
+				 xevent->xclient.data.l[2],
+				 xevent->xclient.data.l[3],
+				 xevent->xclient.data.l[4],
+				 xevent->xclient.data.l[0]);
+	  _gtk_xembed_pop_message ();
+
+	  return_val = GDK_FILTER_REMOVE;
+	}
+      else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name_for_display (display, "WM_DELETE_WINDOW"))
+	{
+	  /* We filter these out because we take being reparented back to the
+	   * root window as the reliable end of the embedding protocol
+	   */
+
+	  return GDK_FILTER_REMOVE;
+	}
+      break;
+    case ReparentNotify:
+      {
+	XReparentEvent *xre = &xevent->xreparent;
+	gboolean was_embedded = plug->socket_window != NULL;
+
+	GTK_NOTE (PLUGSOCKET, g_message("GtkPlug: ReparentNotify received\n"));
+
+	return_val = GDK_FILTER_REMOVE;
+	
+	g_object_ref (plug);
+	
+	if (was_embedded)
+	  {
+	    /* End of embedding protocol for previous socket */
+	    
+	    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: end of embedding\n"));
+	    /* FIXME: race if we remove from another socket and
+	     * then add to a local window before we get notification
+	     * Probably need check in _gtk_plug_add_to_socket
+	     */
+	    
+	    if (xre->parent != GDK_WINDOW_XWINDOW (plug->socket_window))
+	      {
+		GtkWidget *widget = GTK_WIDGET (plug);
+
+		gdk_window_set_user_data (plug->socket_window, NULL);
+		g_object_unref (plug->socket_window);
+		plug->socket_window = NULL;
+
+		/* Emit a delete window, as if the user attempted
+		 * to close the toplevel. Simple as to how we
+		 * handle WM_DELETE_WINDOW, if it isn't handled
+		 * we destroy the widget. BUt only do this if
+		 * we are being reparented to the root window.
+		 * Moving from one embedder to another should
+		 * be invisible to the app.
+		 */
+
+		if (xre->parent == GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen)))
+		  {
+		    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: calling gtk_plug_send_delete_event()\n"));
+		    _gtk_plug_send_delete_event (widget);
+		  }
+	      }
+	    else
+	      goto done;
+	  }
+
+	if (xre->parent != GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen)))
+	  {
+	    /* Start of embedding protocol */
+
+	    GTK_NOTE (PLUGSOCKET, g_message ("GtkPlug: start of embedding\n"));
+	    plug->socket_window = gdk_window_lookup_for_display (display, xre->parent);
+	    if (plug->socket_window)
+	      {
+		gpointer user_data = NULL;
+		gdk_window_get_user_data (plug->socket_window, &user_data);
+
+		if (user_data)
+		  {
+		    g_warning (G_STRLOC "Plug reparented unexpectedly into window in the same process");
+		    plug->socket_window = NULL;
+		    break;
+		  }
+
+		g_object_ref (plug->socket_window);
+	      }
+	    else
+	      {
+		plug->socket_window = gdk_window_foreign_new_for_display (display, xre->parent);
+		if (!plug->socket_window) /* Already gone */
+		  break;
+	      }
+
+	    _gtk_plug_add_all_grabbed_keys (plug);
+
+	    if (!was_embedded)
+	      g_signal_emit_by_name (plug, "embedded");
+	  }
+
+      done:
+	g_object_unref (plug);
+	
+	break;
+      }
+    }
+
+  return GDK_FILTER_CONTINUE;
+}