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gtk2/gtk/gtkplug.c
Owen Taylor 887c5ad832 Return FALSE not true in the grab_widget == NULL case. (Bug reported by 
Sat Jan 26 19:04:37 2002  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkmain.c (check_is_grabbed): Return FALSE not true
	in the grab_widget == NULL case. (Bug reported by
	Padraig O'Briain, #69735)

	* gtk/gtkplug.c (handle_modality_on): Realize the modality
	window so gtk_widget_event() doesn't complain :-((((.
2002-01-27 00:19:31 +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 "xembed.h"
static void gtk_plug_class_init (GtkPlugClass *klass);
static void gtk_plug_init (GtkPlug *plug);
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 void gtk_plug_forward_key_press (GtkPlug *plug,
GdkEventKey *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);
#if 0
static void gtk_plug_accel_entries_changed (GtkWindow *window);
#endif
static GdkFilterReturn gtk_plug_filter_func (GdkXEvent *gdk_xevent,
GdkEvent *event,
gpointer data);
#if 0
static void gtk_plug_free_grabbed_keys (GHashTable *key_table);
#endif
static void handle_modality_off (GtkPlug *plug);
static void send_xembed_message (GtkPlug *plug,
glong message,
glong detail,
glong data1,
glong data2,
guint32 time);
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 };
GtkType
gtk_plug_get_type ()
{
static GtkType 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)
{
GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
GtkWindowClass *window_class = (GtkWindowClass *)class;
GtkContainerClass *container_class = (GtkContainerClass *)class;
parent_class = gtk_type_class (GTK_TYPE_WINDOW);
bin_class = gtk_type_class (GTK_TYPE_BIN);
widget_class->realize = gtk_plug_realize;
widget_class->unrealize = gtk_plug_unrealize;
widget_class->key_press_event = gtk_plug_key_press_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;
#if 0
window_class->accel_entries_changed = gtk_plug_accel_entries_changed;
#endif
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,
GTK_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
{
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;
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_window_reparent (widget->window, plug->socket_window, 0, 0);
gtk_widget_set_parent (widget, GTK_WIDGET (socket));
g_signal_emit_by_name (G_OBJECT (socket), "plug_added", 0);
}
/**
* _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;
GdkEvent event;
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, GDK_ROOT_PARENT (), 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;
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 (G_OBJECT (socket), "plug_removed", &result);
if (!result)
gtk_widget_destroy (GTK_WIDGET (socket));
event.any.type = GDK_DELETE;
event.any.window = g_object_ref (widget->window);
event.any.send_event = FALSE;
if (!gtk_widget_event (widget, &event))
gtk_widget_destroy (widget);
g_object_unref (event.any.window);
g_object_unref (plug);
if (widget_was_visible && GTK_WIDGET_VISIBLE (socket))
gtk_widget_queue_resize (GTK_WIDGET (socket));
g_object_unref (socket);
}
void
gtk_plug_construct (GtkPlug *plug,
GdkNativeWindow socket_id)
{
if (socket_id)
{
gpointer user_data = NULL;
plug->socket_window = gdk_window_lookup (socket_id);
if (plug->socket_window)
gdk_window_get_user_data (plug->socket_window, &user_data);
else
plug->socket_window = gdk_window_foreign_new (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 (G_OBJECT (plug), plug_signals[EMBEDDED], 0);
}
}
GtkWidget*
gtk_plug_new (GdkNativeWindow socket_id)
{
GtkPlug *plug;
plug = GTK_PLUG (gtk_type_new (GTK_TYPE_PLUG));
gtk_plug_construct (plug, 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_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);
gdk_window_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_FOCUS_CHANGE_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 ();
widget->window = gdk_window_new (plug->socket_window,
&attributes, attributes_mask);
gdk_flush ();
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 (NULL, &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))
{
if (!GTK_WINDOW (widget)->has_focus)
{
gtk_plug_forward_key_press (GTK_PLUG (widget), event);
return TRUE;
}
else
return GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event);
}
else
return FALSE;
}
static void
gtk_plug_forward_key_press (GtkPlug *plug, GdkEventKey *event)
{
XEvent xevent;
xevent.xkey.type = KeyPress;
xevent.xkey.display = GDK_WINDOW_XDISPLAY (GTK_WIDGET(plug)->window);
xevent.xkey.window = GDK_WINDOW_XWINDOW (plug->socket_window);
xevent.xkey.root = GDK_ROOT_WINDOW (); /* FIXME */
xevent.xkey.time = event->time;
/* FIXME, the following might cause big problems for
* non-GTK apps */
xevent.xkey.x = 0;
xevent.xkey.y = 0;
xevent.xkey.x_root = 0;
xevent.xkey.y_root = 0;
xevent.xkey.state = event->state;
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(),
event->keyval);
xevent.xkey.same_screen = TRUE; /* FIXME ? */
gdk_error_trap_push ();
XSendEvent (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (plug->socket_window),
False, NoEventMask, &xevent);
gdk_flush ();
gdk_error_trap_pop ();
}
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_focus)
{
#if 0
XEvent xevent;
xevent.xfocus.type = FocusIn;
xevent.xfocus.display = GDK_WINDOW_XDISPLAY (GTK_WIDGET(plug)->window);
xevent.xfocus.window = GDK_WINDOW_XWINDOW (plug->socket_window);
xevent.xfocus.mode = EMBEDDED_APP_WANTS_FOCUS;
xevent.xfocus.detail = FALSE; /* Don't force */
gdk_error_trap_push ();
XSendEvent (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (plug->socket_window),
False, NoEventMask, &xevent);
gdk_flush ();
gdk_error_trap_pop ();
#endif
send_xembed_message (plug, XEMBED_REQUEST_FOCUS, 0, 0, 0,
gtk_get_current_event_time ());
}
}
#if 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_keys (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))
{
send_xembed_message (plug, XEMBED_GRAB_KEY, 0,
grabbed_key->accelerator_key, grabbed_key->accelerator_mods,
gtk_get_current_event_time ());
}
}
static void
remove_grabbed_keys (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))
{
send_xembed_message (plug, XEMBED_UNGRAB_KEY, 0,
grabbed_key->accelerator_key, grabbed_key->accelerator_mods,
gtk_get_current_event_time ());
}
}
static void
gtk_plug_free_grabbed_keys (GHashTable *key_table)
{
g_hash_table_foreach (key_table, (GHFunc)g_free, NULL);
g_hash_table_destroy (key_table);
}
static void
gtk_plug_accel_entries_changed (GtkWindow *window)
{
GHashTable *new_grabbed_keys, *old_grabbed_keys;
GSList *accel_groups, *tmp_list;
GtkPlug *plug = GTK_PLUG (window);
new_grabbed_keys = g_hash_table_new (grabbed_key_hash, grabbed_key_equal);
accel_groups = gtk_accel_groups_from_object (G_OBJECT (window));
tmp_list = accel_groups;
while (tmp_list)
{
GtkAccelGroup *accel_group = tmp_list->data;
gint i, n_entries;
GtkAccelEntry *entries;
gtk_accel_group_get_entries (accel_group, &entries, &n_entries);
for (i = 0; i < n_entries; i++)
{
GdkKeymapKey *keys;
gint n_keys;
if (gdk_keymap_get_entries_for_keyval (NULL, entries[i].accelerator_key, &keys, &n_keys))
{
GrabbedKey *key = g_new (GrabbedKey, 1);
key->accelerator_key = keys[0].keycode;
key->accelerator_mods = entries[i].accelerator_mods;
g_hash_table_insert (new_grabbed_keys, key, key);
g_free (keys);
}
}
tmp_list = tmp_list->next;
}
g_hash_table_foreach (new_grabbed_keys, add_grabbed_keys, plug);
old_grabbed_keys = plug->grabbed_keys;
plug->grabbed_keys = new_grabbed_keys;
if (old_grabbed_keys)
{
g_hash_table_foreach (old_grabbed_keys, remove_grabbed_keys, plug);
gtk_plug_free_grabbed_keys (old_grabbed_keys);
}
}
#endif
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);
if (!GTK_CONTAINER (window)->focus_child)
{
gint message = -1;
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;
}
send_xembed_message (plug, message, 0, 0, 0,
gtk_get_current_event_time ());
#if 0
gtk_window_set_focus (GTK_WINDOW (widget), NULL);
gdk_error_trap_push ();
XSetInputFocus (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (plug->socket_window),
RevertToParent, event->time);
gdk_flush ();
gdk_error_trap_pop ();
gtk_plug_forward_key_press (plug, event);
#endif
}
}
return FALSE;
}
else
{
/* Try to focus the first widget in the window */
if (gtk_widget_child_focus (bin->child, direction))
return TRUE;
}
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
send_xembed_message (GtkPlug *plug,
glong message,
glong detail,
glong data1,
glong data2,
guint32 time)
{
if (plug->socket_window)
{
XEvent xevent;
xevent.xclient.window = GDK_WINDOW_XWINDOW (plug->socket_window);
xevent.xclient.type = ClientMessage;
xevent.xclient.message_type = gdk_x11_get_xatom_by_name ("_XEMBED");
xevent.xclient.format = 32;
xevent.xclient.data.l[0] = time;
xevent.xclient.data.l[1] = message;
xevent.xclient.data.l[2] = detail;
xevent.xclient.data.l[3] = data1;
xevent.xclient.data.l[4] = data2;
gdk_error_trap_push ();
XSendEvent (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (plug->socket_window),
False, NoEventMask, &xevent);
gdk_flush ();
gdk_error_trap_pop ();
}
}
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_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 *gdk_window,
unsigned long flags)
{
Display *display = GDK_WINDOW_XDISPLAY (gdk_window);
Window window = GDK_WINDOW_XWINDOW (gdk_window);
unsigned long buffer[2];
Atom xembed_info_atom = gdk_x11_get_xatom_by_name ("_XEMBED_INFO");
buffer[1] = 0; /* Protocol version */
buffer[1] = flags;
XChangeProperty (display, window,
xembed_info_atom, xembed_info_atom, 32,
PropModeReplace,
(unsigned char *)buffer, 2);
}
static void
handle_xembed_message (GtkPlug *plug,
glong message,
glong detail,
glong data1,
glong data2,
guint32 time)
{
GTK_NOTE (PLUGSOCKET,
g_message ("Message of type %ld received", message));
switch (message)
{
case XEMBED_EMBEDDED_NOTIFY:
break;
case XEMBED_WINDOW_ACTIVATE:
GTK_NOTE(PLUGSOCKET,
g_message ("GtkPlug: ACTIVATE received"));
break;
case XEMBED_WINDOW_DEACTIVATE:
GTK_NOTE(PLUGSOCKET,
g_message ("GtkPlug: DEACTIVATE received"));
break;
case XEMBED_MODALITY_ON:
handle_modality_on (plug);
break;
case XEMBED_MODALITY_OFF:
handle_modality_off (plug);
break;
case XEMBED_FOCUS_IN:
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:
/* fall through */;
}
case XEMBED_FOCUS_OUT:
{
GdkEvent event;
event.focus_change.type = GDK_FOCUS_CHANGE;
event.focus_change.window = GTK_WIDGET (plug)->window;
event.focus_change.send_event = TRUE;
event.focus_change.in = (message == XEMBED_FOCUS_IN);
gtk_widget_event (GTK_WIDGET (plug), &event);
break;
}
case XEMBED_REQUEST_FOCUS:
case XEMBED_FOCUS_NEXT:
case XEMBED_FOCUS_PREV:
case XEMBED_GRAB_KEY:
case XEMBED_UNGRAB_KEY:
g_warning ("GtkPlug: Invalid _XEMBED message of type %ld received", message);
break;
default:
GTK_NOTE(PLUGSOCKET,
g_message ("GtkPlug: Ignoring unknown _XEMBED message of type %ld", message));
break;
}
}
static GdkFilterReturn
gtk_plug_filter_func (GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
{
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 ("_XEMBED"))
{
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]);
return GDK_FILTER_REMOVE;
}
else if (xevent->xclient.message_type == gdk_x11_get_xatom_by_name ("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);
gdk_window_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_ROOT_WINDOW())
{
GdkEvent event;
event.any.type = GDK_DELETE;
event.any.window = g_object_ref (widget->window);
event.any.send_event = FALSE;
if (!gtk_widget_event (widget, &event))
gtk_widget_destroy (widget);
g_object_unref (event.any.window);
}
}
else
break;
}
if (xre->parent != GDK_ROOT_WINDOW ())
{
/* Start of embedding protocol */
plug->socket_window = gdk_window_lookup (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 (xre->parent);
if (!plug->socket_window) /* Already gone */
break;
}
/* FIXME: Add grabbed keys here */
if (!was_embedded)
g_signal_emit (G_OBJECT (plug), plug_signals[EMBEDDED], 0);
}
g_object_unref (plug);
break;
}
}
return GDK_FILTER_CONTINUE;
}
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