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gtk2/gtk/gtkplug.c
Matthias Clasen 1971cb4938 Avoid errors when removing the plug from the socket. (#128546, Christopher 
Thu Feb 19 00:32:21 2004  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtkplug.c (_gtk_plug_remove_from_socket): Avoid errors when
	removing the plug from the socket.  (#128546, Christopher Blizzard)
2004-02-18 23:30:53 +00:00

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/* 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 "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkplug.h"
#include "gtkprivate.h"
#include "gdk/gdkkeysyms.h"
#include "x11/gdkx.h"
#include "gtkxembed.h"
static void gtk_plug_class_init (GtkPlugClass *klass);
static void gtk_plug_init (GtkPlug *plug);
static void gtk_plug_finalize (GObject *object);
static void gtk_plug_realize (GtkWidget *widget);
static void gtk_plug_unrealize (GtkWidget *widget);
static void gtk_plug_show (GtkWidget *widget);
static void gtk_plug_hide (GtkWidget *widget);
static void gtk_plug_map (GtkWidget *widget);
static void gtk_plug_unmap (GtkWidget *widget);
static void gtk_plug_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_plug_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_plug_focus_event (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_plug_set_focus (GtkWindow *window,
GtkWidget *focus);
static gboolean gtk_plug_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_plug_check_resize (GtkContainer *container);
static void gtk_plug_keys_changed (GtkWindow *window);
static GdkFilterReturn gtk_plug_filter_func (GdkXEvent *gdk_xevent,
GdkEvent *event,
gpointer data);
static void handle_modality_off (GtkPlug *plug);
static void xembed_set_info (GdkWindow *window,
unsigned long flags);
/* From Tk */
#define EMBEDDED_APP_WANTS_FOCUS NotifyNormal+20
static GtkWindowClass *parent_class = NULL;
static GtkBinClass *bin_class = NULL;
enum {
EMBEDDED,
LAST_SIGNAL
};
static guint plug_signals[LAST_SIGNAL] = { 0 };
GType
gtk_plug_get_type ()
{
static GType plug_type = 0;
if (!plug_type)
{
static const GTypeInfo plug_info =
{
sizeof (GtkPlugClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_plug_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkPlug),
16, /* n_preallocs */
(GInstanceInitFunc) gtk_plug_init,
};
plug_type = g_type_register_static (GTK_TYPE_WINDOW, "GtkPlug",
&plug_info, 0);
}
return plug_type;
}
static void
gtk_plug_class_init (GtkPlugClass *class)
{
GObjectClass *gobject_class = (GObjectClass *)class;
GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
GtkWindowClass *window_class = (GtkWindowClass *)class;
GtkContainerClass *container_class = (GtkContainerClass *)class;
parent_class = g_type_class_peek_parent (class);
bin_class = g_type_class_peek (GTK_TYPE_BIN);
gobject_class->finalize = gtk_plug_finalize;
widget_class->realize = gtk_plug_realize;
widget_class->unrealize = gtk_plug_unrealize;
widget_class->key_press_event = gtk_plug_key_press_event;
widget_class->focus_in_event = gtk_plug_focus_event;
widget_class->focus_out_event = gtk_plug_focus_event;
widget_class->show = gtk_plug_show;
widget_class->hide = gtk_plug_hide;
widget_class->map = gtk_plug_map;
widget_class->unmap = gtk_plug_unmap;
widget_class->size_allocate = gtk_plug_size_allocate;
widget_class->focus = gtk_plug_focus;
container_class->check_resize = gtk_plug_check_resize;
window_class->set_focus = gtk_plug_set_focus;
window_class->keys_changed = gtk_plug_keys_changed;
plug_signals[EMBEDDED] =
g_signal_new ("embedded",
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkPlugClass, embedded),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
gtk_plug_init (GtkPlug *plug)
{
GtkWindow *window;
window = GTK_WINDOW (plug);
window->type = GTK_WINDOW_TOPLEVEL;
}
static void
gtk_plug_set_is_child (GtkPlug *plug,
gboolean is_child)
{
g_assert (!GTK_WIDGET (plug)->parent);
if (is_child)
{
if (plug->modality_window)
handle_modality_off (plug);
if (plug->modality_group)
{
gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
g_object_unref (plug->modality_group);
plug->modality_group = NULL;
}
/* As a toplevel, the MAPPED flag doesn't correspond
* to whether the widget->window is mapped; we unmap
* here, but don't bother remapping -- we will get mapped
* by gtk_widget_set_parent ().
*/
if (GTK_WIDGET_MAPPED (plug))
gtk_widget_unmap (GTK_WIDGET (plug));
GTK_WIDGET_UNSET_FLAGS (plug, GTK_TOPLEVEL);
gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_PARENT);
_gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), GTK_WIDGET (plug));
}
else
{
if (GTK_WINDOW (plug)->focus_widget)
gtk_window_set_focus (GTK_WINDOW (plug), NULL);
if (GTK_WINDOW (plug)->default_widget)
gtk_window_set_default (GTK_WINDOW (plug), NULL);
plug->modality_group = gtk_window_group_new ();
gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug));
GTK_WIDGET_SET_FLAGS (plug, GTK_TOPLEVEL);
gtk_container_set_resize_mode (GTK_CONTAINER (plug), GTK_RESIZE_QUEUE);
_gtk_widget_propagate_hierarchy_changed (GTK_WIDGET (plug), NULL);
}
}
/**
* _gtk_plug_add_to_socket:
* @plug: a #GtkPlug
* @socket_: a #GtkSocket
*
* Adds a plug to a socket within the same application.
**/
void
_gtk_plug_add_to_socket (GtkPlug *plug,
GtkSocket *socket)
{
GtkWidget *widget;
gint w, h;
g_return_if_fail (GTK_IS_PLUG (plug));
g_return_if_fail (GTK_IS_SOCKET (socket));
g_return_if_fail (GTK_WIDGET_REALIZED (socket));
widget = GTK_WIDGET (plug);
gtk_plug_set_is_child (plug, TRUE);
plug->same_app = TRUE;
socket->same_app = TRUE;
socket->plug_widget = widget;
plug->socket_window = GTK_WIDGET (socket)->window;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_drawable_get_size (GDK_DRAWABLE (widget->window), &w, &h);
gdk_window_reparent (widget->window, plug->socket_window, -w, -h);
}
gtk_widget_set_parent (widget, GTK_WIDGET (socket));
g_signal_emit_by_name (socket, "plug_added", 0);
}
static void
send_delete_event (GtkWidget *widget)
{
GdkEvent *event = gdk_event_new (GDK_DELETE);
event->any.window = g_object_ref (widget->window);
event->any.send_event = FALSE;
gtk_widget_ref (widget);
if (!gtk_widget_event (widget, event))
gtk_widget_destroy (widget);
gtk_widget_unref (widget);
gdk_event_free (event);
}
/**
* _gtk_plug_remove_from_socket:
* @plug: a #GtkPlug
* @socket_: a #GtkSocket
*
* Removes a plug from a socket within the same application.
**/
void
_gtk_plug_remove_from_socket (GtkPlug *plug,
GtkSocket *socket)
{
GtkWidget *widget;
gboolean result;
gboolean widget_was_visible;
g_return_if_fail (GTK_IS_PLUG (plug));
g_return_if_fail (GTK_IS_SOCKET (socket));
g_return_if_fail (GTK_WIDGET_REALIZED (plug));
widget = GTK_WIDGET (plug);
g_object_ref (plug);
g_object_ref (socket);
widget_was_visible = GTK_WIDGET_VISIBLE (plug);
gdk_window_hide (widget->window);
gdk_window_reparent (widget->window,
gtk_widget_get_root_window (widget),
0, 0);
GTK_PRIVATE_SET_FLAG (plug, GTK_IN_REPARENT);
gtk_widget_unparent (GTK_WIDGET (plug));
GTK_PRIVATE_UNSET_FLAG (plug, GTK_IN_REPARENT);
socket->plug_widget = NULL;
if (socket->plug_window != NULL)
{
g_object_unref (socket->plug_window);
socket->plug_window = NULL;
}
socket->same_app = FALSE;
plug->same_app = FALSE;
plug->socket_window = NULL;
gtk_plug_set_is_child (plug, FALSE);
g_signal_emit_by_name (socket, "plug_removed", &result);
if (!result)
gtk_widget_destroy (GTK_WIDGET (socket));
send_delete_event (widget);
g_object_unref (plug);
if (widget_was_visible && GTK_WIDGET_VISIBLE (socket))
gtk_widget_queue_resize (GTK_WIDGET (socket));
g_object_unref (socket);
}
/**
* gtk_plug_construct:
* @plug: a #GtkPlug.
* @socket_id: the XID of the socket's window.
*
* Finish the initialization of @plug for a given #GtkSocket identified by
* @socket_id. This function will generally only be used by classes deriving from #GtkPlug.
**/
void
gtk_plug_construct (GtkPlug *plug,
GdkNativeWindow socket_id)
{
gtk_plug_construct_for_display (plug, gdk_display_get_default (), socket_id);
}
/**
* gtk_plug_construct_for_display:
* @plug: a #GtkPlug.
* @display: the #GdkDisplay associated with @socket_id's
* #GtkSocket.
* @socket_id: the XID of the socket's window.
*
* Finish the initialization of @plug for a given #GtkSocket identified by
* @socket_id which is currently displayed on @display.
* This function will generally only be used by classes deriving from #GtkPlug.
*
* Since: 2.2
**/
void
gtk_plug_construct_for_display (GtkPlug *plug,
GdkDisplay *display,
GdkNativeWindow socket_id)
{
if (socket_id)
{
gpointer user_data = NULL;
plug->socket_window = gdk_window_lookup_for_display (display, socket_id);
if (plug->socket_window)
gdk_window_get_user_data (plug->socket_window, &user_data);
else
plug->socket_window = gdk_window_foreign_new_for_display (display, socket_id);
if (user_data)
{
if (GTK_IS_SOCKET (user_data))
_gtk_plug_add_to_socket (plug, user_data);
else
{
g_warning (G_STRLOC "Can't create GtkPlug as child of non-GtkSocket");
plug->socket_window = NULL;
}
}
if (plug->socket_window)
g_signal_emit (plug, plug_signals[EMBEDDED], 0);
}
}
/**
* gtk_plug_new:
* @socket_id: the window ID of the socket, or 0.
*
* Creates a new plug widget inside the #GtkSocket identified
* by @socket_id. If @socket_id is 0, the plug is left "unplugged" and
* can later be plugged into a #GtkSocket by gtk_socket_add_id().
*
* Return value: the new #GtkPlug widget.
**/
GtkWidget*
gtk_plug_new (GdkNativeWindow socket_id)
{
return gtk_plug_new_for_display (gdk_display_get_default (), socket_id);
}
/**
* gtk_plug_new_for_display:
* @display : the #GdkDisplay on which @socket_id is displayed
* @socket_id: the XID of the socket's window.
*
* Create a new plug widget inside the #GtkSocket identified by socket_id.
*
* Return value: the new #GtkPlug widget.
*
* Since: 2.2
*/
GtkWidget*
gtk_plug_new_for_display (GdkDisplay *display,
GdkNativeWindow socket_id)
{
GtkPlug *plug;
plug = g_object_new (GTK_TYPE_PLUG, NULL);
gtk_plug_construct_for_display (plug, display, socket_id);
return GTK_WIDGET (plug);
}
/**
* gtk_plug_get_id:
* @plug: a #GtkPlug.
*
* Gets the window ID of a #GtkPlug widget, which can then
* be used to embed this window inside another window, for
* instance with gtk_socket_add_id().
*
* Return value: the window ID for the plug
**/
GdkNativeWindow
gtk_plug_get_id (GtkPlug *plug)
{
g_return_val_if_fail (GTK_IS_PLUG (plug), 0);
if (!GTK_WIDGET_REALIZED (plug))
gtk_widget_realize (GTK_WIDGET (plug));
return GDK_WINDOW_XWINDOW (GTK_WIDGET (plug)->window);
}
static void
gtk_plug_finalize (GObject *object)
{
GtkPlug *plug = GTK_PLUG (object);
if (plug->grabbed_keys)
{
g_hash_table_destroy (plug->grabbed_keys);
plug->grabbed_keys = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gtk_plug_unrealize (GtkWidget *widget)
{
GtkPlug *plug;
g_return_if_fail (GTK_IS_PLUG (widget));
plug = GTK_PLUG (widget);
if (plug->socket_window != NULL)
{
gdk_window_set_user_data (plug->socket_window, NULL);
g_object_unref (plug->socket_window);
plug->socket_window = NULL;
}
if (!plug->same_app)
{
if (plug->modality_window)
handle_modality_off (plug);
gtk_window_group_remove_window (plug->modality_group, GTK_WINDOW (plug));
g_object_unref (plug->modality_group);
}
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_plug_realize (GtkWidget *widget)
{
GtkWindow *window;
GtkPlug *plug;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (GTK_IS_PLUG (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
window = GTK_WINDOW (widget);
plug = GTK_PLUG (widget);
attributes.window_type = GDK_WINDOW_CHILD; /* XXX GDK_WINDOW_PLUG ? */
attributes.title = window->title;
attributes.wmclass_name = window->wmclass_name;
attributes.wmclass_class = window->wmclass_class;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
/* this isn't right - we should match our parent's visual/colormap.
* though that will require handling "foreign" colormaps */
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_STRUCTURE_MASK);
attributes_mask = GDK_WA_VISUAL | GDK_WA_COLORMAP;
attributes_mask |= (window->title ? GDK_WA_TITLE : 0);
attributes_mask |= (window->wmclass_name ? GDK_WA_WMCLASS : 0);
if (GTK_WIDGET_TOPLEVEL (widget))
{
attributes.window_type = GDK_WINDOW_TOPLEVEL;
gdk_error_trap_push ();
if (plug->socket_window)
widget->window = gdk_window_new (plug->socket_window,
&attributes, attributes_mask);
else /* If it's a passive plug, we use the root window */
widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
&attributes, attributes_mask);
gdk_display_sync (gtk_widget_get_display (widget));
if (gdk_error_trap_pop ()) /* Uh-oh */
{
gdk_error_trap_push ();
gdk_window_destroy (widget->window);
gdk_flush ();
gdk_error_trap_pop ();
widget->window = gdk_window_new (gtk_widget_get_root_window (widget),
&attributes, attributes_mask);
}
gdk_window_add_filter (widget->window, gtk_plug_filter_func, widget);
plug->modality_group = gtk_window_group_new ();
gtk_window_group_add_window (plug->modality_group, window);
xembed_set_info (widget->window, 0);
}
else
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, window);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static void
gtk_plug_show (GtkWidget *widget)
{
if (GTK_WIDGET_TOPLEVEL (widget))
GTK_WIDGET_CLASS (parent_class)->show (widget);
else
GTK_WIDGET_CLASS (bin_class)->show (widget);
}
static void
gtk_plug_hide (GtkWidget *widget)
{
if (GTK_WIDGET_TOPLEVEL (widget))
GTK_WIDGET_CLASS (parent_class)->hide (widget);
else
GTK_WIDGET_CLASS (bin_class)->hide (widget);
}
/* From gdkinternals.h */
void gdk_synthesize_window_state (GdkWindow *window,
GdkWindowState unset_flags,
GdkWindowState set_flags);
static void
gtk_plug_map (GtkWidget *widget)
{
if (GTK_WIDGET_TOPLEVEL (widget))
{
GtkBin *bin = GTK_BIN (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
if (bin->child &&
GTK_WIDGET_VISIBLE (bin->child) &&
!GTK_WIDGET_MAPPED (bin->child))
gtk_widget_map (bin->child);
xembed_set_info (widget->window, XEMBED_MAPPED);
gdk_synthesize_window_state (widget->window,
GDK_WINDOW_STATE_WITHDRAWN,
0);
}
else
GTK_WIDGET_CLASS (bin_class)->map (widget);
}
static void
gtk_plug_unmap (GtkWidget *widget)
{
if (GTK_WIDGET_TOPLEVEL (widget))
{
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
gdk_window_hide (widget->window);
xembed_set_info (widget->window, 0);
gdk_synthesize_window_state (widget->window,
0,
GDK_WINDOW_STATE_WITHDRAWN);
}
else
GTK_WIDGET_CLASS (bin_class)->unmap (widget);
}
static void
gtk_plug_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
if (GTK_WIDGET_TOPLEVEL (widget))
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
else
{
GtkBin *bin = GTK_BIN (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GtkAllocation child_allocation;
child_allocation.x = child_allocation.y = GTK_CONTAINER (widget)->border_width;
child_allocation.width =
MAX (1, (gint)allocation->width - child_allocation.x * 2);
child_allocation.height =
MAX (1, (gint)allocation->height - child_allocation.y * 2);
gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
}
static gboolean
gtk_plug_key_press_event (GtkWidget *widget,
GdkEventKey *event)
{
if (GTK_WIDGET_TOPLEVEL (widget))
return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
else
return FALSE;
}
static gboolean
gtk_plug_focus_event (GtkWidget *widget,
GdkEventFocus *event)
{
/* We eat focus-in events and focus-out events, since they
* can be generated by something like a keyboard grab on
* a child of the plug.
*/
return FALSE;
}
static void
gtk_plug_set_focus (GtkWindow *window,
GtkWidget *focus)
{
GtkPlug *plug = GTK_PLUG (window);
GTK_WINDOW_CLASS (parent_class)->set_focus (window, focus);
/* Ask for focus from embedder
*/
if (focus && !window->has_toplevel_focus)
{
_gtk_xembed_send_message (plug->socket_window,
XEMBED_REQUEST_FOCUS, 0, 0, 0);
}
}
typedef struct
{
guint accelerator_key;
GdkModifierType accelerator_mods;
} GrabbedKey;
static guint
grabbed_key_hash (gconstpointer a)
{
const GrabbedKey *key = a;
guint h;
h = key->accelerator_key << 16;
h ^= key->accelerator_key >> 16;
h ^= key->accelerator_mods;
return h;
}
static gboolean
grabbed_key_equal (gconstpointer a, gconstpointer b)
{
const GrabbedKey *keya = a;
const GrabbedKey *keyb = b;
return (keya->accelerator_key == keyb->accelerator_key &&
keya->accelerator_mods == keyb->accelerator_mods);
}
static void
add_grabbed_key (gpointer key, gpointer val, gpointer data)
{
GrabbedKey *grabbed_key = key;
GtkPlug *plug = data;
if (!plug->grabbed_keys ||
!g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
{
_gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_GRAB_KEY, 0,
grabbed_key->accelerator_key, grabbed_key->accelerator_mods);
}
}
static void
add_grabbed_key_always (gpointer key, gpointer val, gpointer data)
{
GrabbedKey *grabbed_key = key;
GtkPlug *plug = data;
_gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_GRAB_KEY, 0,
grabbed_key->accelerator_key, grabbed_key->accelerator_mods);
}
static void
remove_grabbed_key (gpointer key, gpointer val, gpointer data)
{
GrabbedKey *grabbed_key = key;
GtkPlug *plug = data;
if (!plug->grabbed_keys ||
!g_hash_table_lookup (plug->grabbed_keys, grabbed_key))
{
_gtk_xembed_send_message (plug->socket_window, XEMBED_GTK_UNGRAB_KEY, 0,
grabbed_key->accelerator_key, grabbed_key->accelerator_mods);
}
}
static void
keys_foreach (GtkWindow *window,
guint keyval,
GdkModifierType modifiers,
gboolean is_mnemonic,
gpointer data)
{
GHashTable *new_grabbed_keys = data;
GrabbedKey *key = g_new (GrabbedKey, 1);
key->accelerator_key = keyval;
key->accelerator_mods = modifiers;
g_hash_table_replace (new_grabbed_keys, key, key);
}
static void
gtk_plug_keys_changed (GtkWindow *window)
{
GHashTable *new_grabbed_keys, *old_grabbed_keys;
GtkPlug *plug = GTK_PLUG (window);
new_grabbed_keys = g_hash_table_new_full (grabbed_key_hash, grabbed_key_equal, (GDestroyNotify)g_free, NULL);
_gtk_window_keys_foreach (window, keys_foreach, new_grabbed_keys);
if (plug->socket_window)
g_hash_table_foreach (new_grabbed_keys, add_grabbed_key, plug);
old_grabbed_keys = plug->grabbed_keys;
plug->grabbed_keys = new_grabbed_keys;
if (old_grabbed_keys)
{
if (plug->socket_window)
g_hash_table_foreach (old_grabbed_keys, remove_grabbed_key, plug);
g_hash_table_destroy (old_grabbed_keys);
}
}
static void
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 gboolean
gtk_plug_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkBin *bin = GTK_BIN (widget);
GtkPlug *plug = GTK_PLUG (widget);
GtkWindow *window = GTK_WINDOW (widget);
GtkContainer *container = GTK_CONTAINER (widget);
GtkWidget *old_focus_child = container->focus_child;
GtkWidget *parent;
/* We override GtkWindow's behavior, since we don't want wrapping here.
*/
if (old_focus_child)
{
if (gtk_widget_child_focus (old_focus_child, direction))
return TRUE;
if (window->focus_widget)
{
/* Wrapped off the end, clear the focus setting for the toplevel */
parent = window->focus_widget->parent;
while (parent)
{
gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
parent = GTK_WIDGET (parent)->parent;
}
gtk_window_set_focus (GTK_WINDOW (container), NULL);
}
}
else
{
/* Try to focus the first widget in the window */
if (bin->child && gtk_widget_child_focus (bin->child, direction))
return TRUE;
}
if (!GTK_CONTAINER (window)->focus_child)
focus_to_parent (plug, direction);
return FALSE;
}
static void
gtk_plug_check_resize (GtkContainer *container)
{
if (GTK_WIDGET_TOPLEVEL (container))
GTK_CONTAINER_CLASS (parent_class)->check_resize (container);
else
GTK_CONTAINER_CLASS (bin_class)->check_resize (container);
}
static void
focus_first_last (GtkPlug *plug,
GtkDirectionType direction)
{
GtkWindow *window = GTK_WINDOW (plug);
GtkWidget *parent;
if (window->focus_widget)
{
parent = window->focus_widget->parent;
while (parent)
{
gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
parent = GTK_WIDGET (parent)->parent;
}
gtk_window_set_focus (GTK_WINDOW (plug), NULL);
}
gtk_widget_child_focus (GTK_WIDGET (plug), direction);
}
static void
handle_modality_on (GtkPlug *plug)
{
if (!plug->modality_window)
{
plug->modality_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_screen (GTK_WINDOW (plug->modality_window),
gtk_widget_get_screen (GTK_WIDGET (plug)));
gtk_widget_realize (plug->modality_window);
gtk_window_group_add_window (plug->modality_group, GTK_WINDOW (plug->modality_window));
gtk_grab_add (plug->modality_window);
}
}
static void
handle_modality_off (GtkPlug *plug)
{
if (plug->modality_window)
{
gtk_widget_destroy (plug->modality_window);
plug->modality_window = NULL;
}
}
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: Message of type %d received", 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:
handle_modality_on (plug);
break;
case XEMBED_MODALITY_OFF:
handle_modality_off (plug);
break;
case XEMBED_FOCUS_IN:
_gtk_window_set_has_toplevel_focus (window, TRUE);
switch (detail)
{
case XEMBED_FOCUS_FIRST:
focus_first_last (plug, GTK_DIR_TAB_FORWARD);
break;
case XEMBED_FOCUS_LAST:
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 of type %d received", message);
break;
default:
GTK_NOTE(PLUGSOCKET,
g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %d", message));
break;
}
}
static GdkFilterReturn
gtk_plug_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 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;
return_val = GDK_FILTER_REMOVE;
g_object_ref (plug);
if (was_embedded)
{
/* End of embedding protocol for previous socket */
/* 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)))
send_delete_event (widget);
}
else
goto done;
}
if (xre->parent != GDK_WINDOW_XWINDOW (gdk_screen_get_root_window (screen)))
{
/* Start of embedding protocol */
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;
}
if (plug->grabbed_keys)
g_hash_table_foreach (plug->grabbed_keys, add_grabbed_key_always, plug);
if (!was_embedded)
g_signal_emit (plug, plug_signals[EMBEDDED], 0);
}
done:
g_object_unref (plug);
break;
}
}
return GDK_FILTER_CONTINUE;
}
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