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gtk2/gtk/gtksocket.c
Owen Taylor 4e2b60ac4d Patch from Matthias Clasen to remove remove all instances of 
Wed Jul 18 19:28:46 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/*.c: Patch from Matthias Clasen to remove remove
	all instances of g_return_if_fail (foo != NULL); that are
	immediately before a g_return_if_fail (GTK_IS_FOO (foo));
	since the second check catches the NULL anyways.
2001-07-18 23:39:26 +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 "gdk/gdkkeysyms.h"
#include "gtkmain.h"
#include "gtkmarshal.h"
#include "gtkwindow.h"
#include "gtkplug.h"
#include "gtkprivate.h"
#include "gtksignal.h"
#include "gtksocket.h"
#include "gtkdnd.h"
#include "x11/gdkx.h"
#include "xembed.h"
/* Forward declararations */
static void gtk_socket_class_init (GtkSocketClass *klass);
static void gtk_socket_init (GtkSocket *socket);
static void gtk_socket_realize (GtkWidget *widget);
static void gtk_socket_unrealize (GtkWidget *widget);
static void gtk_socket_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_socket_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_socket_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel);
static void gtk_socket_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static gboolean gtk_socket_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_socket_focus_in_event (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_socket_claim_focus (GtkSocket *socket);
static gboolean gtk_socket_focus_out_event (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_socket_send_configure_event (GtkSocket *socket);
static gboolean gtk_socket_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_socket_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_socket_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_socket_add_window (GtkSocket *socket,
GdkNativeWindow xid,
gboolean need_reparent);
static GdkFilterReturn gtk_socket_filter_func (GdkXEvent *gdk_xevent,
GdkEvent *event,
gpointer data);
static void send_xembed_message (GtkSocket *socket,
glong message,
glong detail,
glong data1,
glong data2,
guint32 time);
static gboolean xembed_get_info (GdkWindow *gdk_window,
unsigned long *version,
unsigned long *flags);
/* From Tk */
#define EMBEDDED_APP_WANTS_FOCUS NotifyNormal+20
/* Local data */
enum {
PLUG_ADDED,
PLUG_REMOVED,
LAST_SIGNAL
};
static guint socket_signals[LAST_SIGNAL] = { 0 };
static GtkWidgetClass *parent_class = NULL;
GtkType
gtk_socket_get_type (void)
{
static GtkType socket_type = 0;
if (!socket_type)
{
static const GTypeInfo socket_info =
{
sizeof (GtkSocketClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_socket_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkSocket),
16, /* n_preallocs */
(GInstanceInitFunc) gtk_socket_init,
};
socket_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkSocket", &socket_info, 0);
}
return socket_type;
}
static void
gtk_socket_class_init (GtkSocketClass *class)
{
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
widget_class->realize = gtk_socket_realize;
widget_class->unrealize = gtk_socket_unrealize;
widget_class->size_request = gtk_socket_size_request;
widget_class->size_allocate = gtk_socket_size_allocate;
widget_class->hierarchy_changed = gtk_socket_hierarchy_changed;
widget_class->grab_notify = gtk_socket_grab_notify;
widget_class->key_press_event = gtk_socket_key_press_event;
widget_class->focus_in_event = gtk_socket_focus_in_event;
widget_class->focus_out_event = gtk_socket_focus_out_event;
widget_class->focus = gtk_socket_focus;
container_class->remove = gtk_socket_remove;
container_class->forall = gtk_socket_forall;
socket_signals[PLUG_ADDED] =
g_signal_new ("plug_added",
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSocketClass, plug_added),
NULL, NULL,
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
socket_signals[PLUG_REMOVED] =
g_signal_new ("plug_removed",
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSocketClass, plug_removed),
_gtk_boolean_handled_accumulator, NULL,
gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
}
static void
gtk_socket_init (GtkSocket *socket)
{
socket->request_width = 0;
socket->request_height = 0;
socket->current_width = 0;
socket->current_height = 0;
socket->plug_window = NULL;
socket->plug_widget = NULL;
socket->focus_in = FALSE;
socket->have_size = FALSE;
socket->need_map = FALSE;
}
/**
* gtk_socket_new:
* @void:
*
* Create a new empty #GtkSocket.
*
* Return value: the new #GtkSocket.
**/
GtkWidget*
gtk_socket_new (void)
{
GtkSocket *socket;
socket = g_object_new (GTK_TYPE_SOCKET, NULL);
return GTK_WIDGET (socket);
}
/**
* gtk_socket_steal:
* @socket: a #GtkSocket
* @id: the XID of an existing toplevel window.
*
* Reparents a pre-existing toplevel window into a #GtkSocket. This is
* meant to embed clients that do not know about embedding into a
* #GtkSocket, however doing so is inherently unreliable, and using
* this function is not recommended.
*
* The #GtkSocket must have already be added into a toplevel window
* before you can make this call.
**/
void
gtk_socket_steal (GtkSocket *socket, GdkNativeWindow id)
{
g_return_if_fail (GTK_IS_SOCKET (socket));
g_return_if_fail (GTK_WIDGET_ANCHORED (socket));
if (!GTK_WIDGET_REALIZED (socket))
gtk_widget_realize (GTK_WIDGET (socket));
gtk_socket_add_window (socket, id, TRUE);
}
/**
* gtk_socket_add_id:
* @socket: a #GtkSocket
* @id: the XID of a client participating in the XEMBED protocol.
*
* Adds an XEMBED client, such as a #GtkPlug, to the #GtkSocket. The
* client may be in the same process or in a different process.
*
* To embed a #GtkPlug in a #GtkSocket, you can either create the
* #GtkPlug with gtk_plug_new (0), call gtk_plug_get_id() to get the
* window ID of the plug, and then pass that to the
* gtk_socket_add_id(), or you can call gtk_socket_get_id() to get the
* window ID for the socket, and call gtk_plug_new() passing in that
* ID.
*
* The #GtkSocket must have already be added into a toplevel window
* before you can make this call.
**/
void
gtk_socket_add_id (GtkSocket *socket, GdkNativeWindow id)
{
g_return_if_fail (GTK_IS_SOCKET (socket));
g_return_if_fail (GTK_WIDGET_ANCHORED (socket));
if (!GTK_WIDGET_REALIZED (socket))
gtk_widget_realize (GTK_WIDGET (socket));
gtk_socket_add_window (socket, id, TRUE);
}
/**
* gtk_socket_get_id:
* @socket: a #GtkSocket.
*
* Gets the window ID of a #GtkSocket widget, which can then
* be used to create a client embedded inside the socket, for
* instance with gtk_socket_new (id). The #GtkSocket must
* have already be added into a toplevel window before you
* can make this call.
*
* Return value: the window ID for the socket
**/
GdkNativeWindow
gtk_socket_get_id (GtkSocket *socket)
{
g_return_val_if_fail (GTK_IS_SOCKET (socket), 0);
g_return_val_if_fail (GTK_WIDGET_ANCHORED (socket), 0);
if (!GTK_WIDGET_REALIZED (socket))
gtk_widget_realize (GTK_WIDGET (socket));
return GDK_WINDOW_XWINDOW (GTK_WIDGET (socket)->window);
}
static void
gtk_socket_realize (GtkWidget *widget)
{
GtkSocket *socket;
GdkWindowAttr attributes;
gint attributes_mask;
XWindowAttributes xattrs;
g_return_if_fail (GTK_IS_SOCKET (widget));
socket = GTK_SOCKET (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = GDK_FOCUS_CHANGE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, socket);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
XGetWindowAttributes (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (widget->window),
&xattrs);
XSelectInput (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW(widget->window),
xattrs.your_event_mask |
SubstructureNotifyMask | SubstructureRedirectMask);
gdk_window_add_filter (widget->window, gtk_socket_filter_func, widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
/* We sync here so that we make sure that if the XID for
* our window is passed to another application, SubstructureRedirectMask
* will be set by the time the other app creates its window.
*/
gdk_flush();
}
static void
gtk_socket_unrealize (GtkWidget *widget)
{
GtkSocket *socket = GTK_SOCKET (widget);
if (socket->plug_widget)
{
_gtk_plug_remove_from_socket (GTK_PLUG (socket->plug_widget), socket);
}
else if (socket->plug_window)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
if (toplevel && GTK_IS_WINDOW (toplevel))
gtk_window_remove_embedded_xid (GTK_WINDOW (toplevel),
GDK_WINDOW_XWINDOW (socket->plug_window));
g_object_unref (socket->plug_window);
socket->plug_window = NULL;
}
#if 0
if (socket->grabbed_keys)
{
g_hash_table_foreach (socket->grabbed_keys, (GHFunc)g_free, NULL);
g_hash_table_destroy (socket->grabbed_keys);
socket->grabbed_keys = NULL;
}
#endif
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_socket_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkSocket *socket = GTK_SOCKET (widget);
if (socket->plug_widget)
{
gtk_widget_size_request (socket->plug_widget, requisition);
}
else
{
if (socket->is_mapped && !socket->have_size && socket->plug_window)
{
XSizeHints hints;
long supplied;
gdk_error_trap_push ();
if (XGetWMNormalHints (GDK_DISPLAY(),
GDK_WINDOW_XWINDOW (socket->plug_window),
&hints, &supplied))
{
/* This is obsolete, according the X docs, but many programs
* still use it */
if (hints.flags & (PSize | USSize))
{
socket->request_width = hints.width;
socket->request_height = hints.height;
}
else if (hints.flags & PMinSize)
{
socket->request_width = hints.min_width;
socket->request_height = hints.min_height;
}
else if (hints.flags & PBaseSize)
{
socket->request_width = hints.base_width;
socket->request_height = hints.base_height;
}
}
socket->have_size = TRUE; /* don't check again? */
gdk_error_trap_pop ();
}
if (socket->is_mapped && socket->have_size)
{
requisition->width = MAX (socket->request_width, 1);
requisition->height = MAX (socket->request_height, 1);
}
else
{
requisition->width = 1;
requisition->height = 1;
}
}
}
static void
gtk_socket_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkSocket *socket;
g_return_if_fail (GTK_IS_SOCKET (widget));
g_return_if_fail (allocation != NULL);
socket = GTK_SOCKET (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
if (socket->plug_widget)
{
GtkAllocation child_allocation;
child_allocation.x = 0;
child_allocation.y = 0;
child_allocation.width = allocation->width;
child_allocation.height = allocation->height;
gtk_widget_size_allocate (socket->plug_widget, &child_allocation);
}
else if (socket->plug_window)
{
gdk_error_trap_push ();
if (!socket->need_map &&
(allocation->width == socket->current_width) &&
(allocation->height == socket->current_height))
{
gtk_socket_send_configure_event (socket);
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - allocated no change: %d %d",
allocation->width, allocation->height));
}
else
{
gdk_window_move_resize (socket->plug_window,
0, 0,
allocation->width, allocation->height);
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - allocated: %d %d",
allocation->width, allocation->height));
socket->current_width = allocation->width;
socket->current_height = allocation->height;
}
if (socket->need_map)
{
gdk_window_show (socket->plug_window);
socket->need_map = FALSE;
}
gdk_flush ();
gdk_error_trap_pop ();
}
}
}
#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_key (GtkSocket *socket,
guint hardware_keycode,
GdkModifierType mods)
{
GrabbedKey key;
GrabbedKey *new_key;
GrabbedKey *found_key;
if (socket->grabbed_keys)
{
key.accelerator_key = hardware_keycode;
key.accelerator_mods = mods;
found_key = g_hash_table_lookup (socket->grabbed_keys, &key);
if (found_key)
{
g_warning ("GtkSocket: request to add already present grabbed key %u,%#x\n",
hardware_keycode, mods);
return;
}
}
if (!socket->grabbed_keys)
socket->grabbed_keys = g_hash_table_new (grabbed_key_hash, grabbed_key_equal);
new_key = g_new (GrabbedKey, 1);
new_key->accelerator_key = hardware_keycode;
new_key->accelerator_mods = mods;
g_hash_table_insert (socket->grabbed_keys, new_key, new_key);
}
static void
remove_grabbed_key (GtkSocket *socket,
guint hardware_keycode,
GdkModifierType mods)
{
GrabbedKey key;
GrabbedKey *found_key = NULL;
if (socket->grabbed_keys)
{
key.accelerator_key = hardware_keycode;
key.accelerator_mods = mods;
found_key = g_hash_table_lookup (socket->grabbed_keys, &key);
}
if (found_key)
{
g_hash_table_remove (socket->grabbed_keys, &key);
g_free (found_key);
}
else
g_warning ("GtkSocket: request to remove non-present grabbed key %u,%#x\n",
hardware_keycode, mods);
}
static gboolean
toplevel_key_press_handler (GtkWidget *toplevel,
GdkEventKey *event,
GtkSocket *socket)
{
GrabbedKey search_key;
search_key.accelerator_key = event->hardware_keycode;
search_key.accelerator_mods = event->state;
if (socket->grabbed_keys &&
g_hash_table_lookup (socket->grabbed_keys, &search_key))
{
gtk_socket_key_press_event (GTK_WIDGET (socket), event);
gtk_signal_emit_stop_by_name (GTK_OBJECT (toplevel), "key_press_event");
return TRUE;
}
else
return FALSE;
}
#endif
static void
toplevel_focus_in_handler (GtkWidget *toplevel,
GdkEventFocus *event,
GtkSocket *socket)
{
/* It appears spurious focus in events can occur when
* the window is hidden. So we'll just check to see if
* the window is visible before actually handling the
* event. (Comment from gtkwindow.c)
*/
if (GTK_WIDGET_VISIBLE (toplevel))
send_xembed_message (socket, XEMBED_WINDOW_ACTIVATE, 0, 0, 0,
gtk_get_current_event_time ()); /* Will be GDK_CURRENT_TIME */
}
static void
toplevel_focus_out_handler (GtkWidget *toplevel,
GdkEventFocus *event,
GtkSocket *socket)
{
send_xembed_message (socket, XEMBED_WINDOW_DEACTIVATE, 0, 0, 0,
gtk_get_current_event_time ()); /* Will be GDK_CURRENT_TIME */
}
static void
gtk_socket_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
if (toplevel && !GTK_IS_WINDOW (toplevel))
toplevel = NULL;
if (toplevel != socket->toplevel)
{
if (socket->toplevel)
{
#if 0
gtk_signal_disconnect_by_func (GTK_OBJECT (socket->toplevel), GTK_SIGNAL_FUNC (toplevel_key_press_handler), socket);
#endif
gtk_signal_disconnect_by_func (GTK_OBJECT (socket->toplevel), GTK_SIGNAL_FUNC (toplevel_focus_in_handler), socket);
gtk_signal_disconnect_by_func (GTK_OBJECT (socket->toplevel), GTK_SIGNAL_FUNC (toplevel_focus_out_handler), socket);
}
socket->toplevel = toplevel;
if (toplevel)
{
#if 0
gtk_signal_connect (GTK_OBJECT (socket->toplevel), "key_press_event",
GTK_SIGNAL_FUNC (toplevel_key_press_handler), socket);
#endif
gtk_signal_connect (GTK_OBJECT (socket->toplevel), "focus_in_event",
GTK_SIGNAL_FUNC (toplevel_focus_in_handler), socket);
gtk_signal_connect (GTK_OBJECT (socket->toplevel), "focus_out_event",
GTK_SIGNAL_FUNC (toplevel_focus_out_handler), socket);
}
}
}
static void
gtk_socket_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
send_xembed_message (GTK_SOCKET (widget),
was_grabbed ? XEMBED_MODALITY_OFF : XEMBED_MODALITY_ON,
0, 0, 0, gtk_get_current_event_time ());
}
static gboolean
gtk_socket_key_press_event (GtkWidget *widget,
GdkEventKey *event)
{
GtkSocket *socket = GTK_SOCKET (widget);
if (socket->plug_window)
{
XEvent xevent;
xevent.xkey.type = KeyPress;
xevent.xkey.display = GDK_WINDOW_XDISPLAY (event->window);
xevent.xkey.window = GDK_WINDOW_XWINDOW (socket->plug_window);
xevent.xkey.root = GDK_ROOT_WINDOW ();
xevent.xkey.time = event->time;
/* FIXME, the following might cause 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 = event->hardware_keycode;
xevent.xkey.same_screen = TRUE; /* FIXME ? */
gdk_error_trap_push ();
XSendEvent (gdk_display,
GDK_WINDOW_XWINDOW (socket->plug_window),
False, NoEventMask, &xevent);
gdk_flush ();
gdk_error_trap_pop ();
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_socket_focus_in_event (GtkWidget *widget, GdkEventFocus *event)
{
GtkSocket *socket = GTK_SOCKET (widget);
if (!GTK_WIDGET_HAS_FOCUS (widget))
{
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
if (socket->plug_window)
{
send_xembed_message (socket, XEMBED_FOCUS_IN, XEMBED_FOCUS_CURRENT, 0, 0,
gtk_get_current_event_time ());
}
}
return TRUE;
}
static gboolean
gtk_socket_focus_out_event (GtkWidget *widget, GdkEventFocus *event)
{
GtkSocket *socket = GTK_SOCKET (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
#if 0
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (widget);
if (toplevel && GTK_IS_WINDOW (toplevel))
{
XSetInputFocus (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (toplevel->window),
RevertToParent, CurrentTime); /* FIXME? */
}
#endif
if (socket->plug_window)
{
send_xembed_message (socket, XEMBED_FOCUS_OUT, 0, 0, 0,
gtk_get_current_event_time ());
}
socket->focus_in = FALSE;
return TRUE;
}
static void
gtk_socket_claim_focus (GtkSocket *socket)
{
socket->focus_in = TRUE;
/* Oh, the trickery... */
GTK_WIDGET_SET_FLAGS (socket, GTK_CAN_FOCUS);
gtk_widget_grab_focus (GTK_WIDGET (socket));
GTK_WIDGET_UNSET_FLAGS (socket, GTK_CAN_FOCUS);
/* FIXME: we might grab the focus even if we don't have
* it as an app... (and see _focus_in ()) */
if (socket->plug_window)
{
#if 0
gdk_error_trap_push ();
XSetInputFocus (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (socket->plug_window),
RevertToParent, GDK_CURRENT_TIME);
gdk_flush ();
gdk_error_trap_pop ();
#endif
}
}
static gboolean
gtk_socket_focus (GtkWidget *widget, GtkDirectionType direction)
{
GtkSocket *socket;
gint detail = -1;
g_return_val_if_fail (GTK_IS_SOCKET (widget), FALSE);
socket = GTK_SOCKET (widget);
if (socket->plug_widget)
return gtk_widget_child_focus (socket->plug_widget, direction);
if (!GTK_WIDGET_HAS_FOCUS (widget))
{
switch (direction)
{
case GTK_DIR_UP:
case GTK_DIR_LEFT:
case GTK_DIR_TAB_BACKWARD:
detail = XEMBED_FOCUS_LAST;
break;
case GTK_DIR_DOWN:
case GTK_DIR_RIGHT:
case GTK_DIR_TAB_FORWARD:
detail = XEMBED_FOCUS_FIRST;
break;
}
send_xembed_message (socket, XEMBED_FOCUS_IN, detail, 0, 0,
gtk_get_current_event_time ());
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_grab_focus (widget);
return TRUE;
}
else
return FALSE;
#if 0
if (!socket->focus_in && socket->plug_window)
{
XEvent xevent;
gtk_socket_claim_focus (socket);
xevent.xkey.type = KeyPress;
xevent.xkey.display = GDK_DISPLAY ();
xevent.xkey.window = GDK_WINDOW_XWINDOW (socket->plug_window);
xevent.xkey.root = GDK_ROOT_WINDOW (); /* FIXME */
xevent.xkey.time = GDK_CURRENT_TIME; /* FIXME */
/* 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 = 0;
xevent.xkey.same_screen = TRUE; /* FIXME ? */
switch (direction)
{
case GTK_DIR_UP:
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(), GDK_Up);
break;
case GTK_DIR_DOWN:
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(), GDK_Down);
break;
case GTK_DIR_LEFT:
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(), GDK_Left);
break;
case GTK_DIR_RIGHT:
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(), GDK_Right);
break;
case GTK_DIR_TAB_FORWARD:
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(), GDK_Tab);
break;
case GTK_DIR_TAB_BACKWARD:
xevent.xkey.keycode = XKeysymToKeycode(GDK_DISPLAY(), GDK_Tab);
xevent.xkey.state = ShiftMask;
break;
}
gdk_error_trap_push ();
XSendEvent (gdk_display,
GDK_WINDOW_XWINDOW (socket->plug_window),
False, NoEventMask, &xevent);
gdk_flush();
gdk_error_trap_pop ();
return TRUE;
}
else
{
return FALSE;
}
#endif
}
static void
gtk_socket_remove (GtkContainer *container,
GtkWidget *child)
{
GtkSocket *socket = GTK_SOCKET (container);
g_return_if_fail (child == socket->plug_widget);
_gtk_plug_remove_from_socket (GTK_PLUG (socket->plug_widget), socket);
}
static void
gtk_socket_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkSocket *socket = GTK_SOCKET (container);
if (socket->plug_widget)
(* callback) (socket->plug_widget, callback_data);
}
static void
gtk_socket_send_configure_event (GtkSocket *socket)
{
XEvent event;
g_return_if_fail (socket->plug_window != NULL);
event.xconfigure.type = ConfigureNotify;
event.xconfigure.display = gdk_display;
event.xconfigure.event = GDK_WINDOW_XWINDOW (socket->plug_window);
event.xconfigure.window = GDK_WINDOW_XWINDOW (socket->plug_window);
event.xconfigure.x = 0;
event.xconfigure.y = 0;
event.xconfigure.width = GTK_WIDGET(socket)->allocation.width;
event.xconfigure.height = GTK_WIDGET(socket)->allocation.height;
event.xconfigure.border_width = 0;
event.xconfigure.above = None;
event.xconfigure.override_redirect = False;
gdk_error_trap_push ();
XSendEvent (gdk_display,
GDK_WINDOW_XWINDOW (socket->plug_window),
False, NoEventMask, &event);
gdk_flush ();
gdk_error_trap_pop ();
}
static void
gtk_socket_add_window (GtkSocket *socket,
GdkNativeWindow xid,
gboolean need_reparent)
{
GtkWidget *widget = GTK_WIDGET (socket);
gpointer user_data = NULL;
socket->plug_window = gdk_window_lookup (xid);
if (socket->plug_window)
{
g_object_ref (socket->plug_window);
gdk_window_get_user_data (socket->plug_window, &user_data);
}
if (user_data) /* A widget's window in this process */
{
GtkWidget *child_widget = user_data;
if (!GTK_IS_PLUG (child_widget))
{
g_warning (G_STRLOC "Can't add non-GtkPlug to GtkSocket");
socket->plug_window = NULL;
gdk_error_trap_pop ();
return;
}
_gtk_plug_add_to_socket (GTK_PLUG (child_widget), socket);
}
else /* A foreign window */
{
GtkWidget *toplevel;
GdkDragProtocol protocol;
unsigned long version;
unsigned long flags;
gdk_error_trap_push ();
if (!socket->plug_window)
{
socket->plug_window = gdk_window_foreign_new (xid);
if (!socket->plug_window) /* was deleted before we could get it */
{
gdk_error_trap_pop ();
return;
}
}
XSelectInput (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW(socket->plug_window),
StructureNotifyMask | PropertyChangeMask);
if (gdk_error_trap_pop ())
{
gdk_window_unref (socket->plug_window);
socket->plug_window = NULL;
return;
}
/* OK, we now will reliably get destroy notification on socket->plug_window */
gdk_error_trap_push ();
if (need_reparent)
{
gdk_window_hide (socket->plug_window); /* Shouldn't actually be necessary for XEMBED, but just in case */
gdk_window_reparent (socket->plug_window, widget->window, 0, 0);
}
socket->have_size = FALSE;
socket->xembed_version = -1;
if (xembed_get_info (socket->plug_window, &version, &flags))
{
socket->xembed_version = version;
socket->is_mapped = (flags & XEMBED_MAPPED) != 0;
}
else
{
/* FIXME, we should probably actually check the state before we started */
socket->is_mapped = need_reparent ? TRUE : FALSE;
}
socket->need_map = socket->is_mapped;
if (gdk_drag_get_protocol (xid, &protocol))
gtk_drag_dest_set_proxy (GTK_WIDGET (socket), socket->plug_window,
protocol, TRUE);
gdk_flush ();
gdk_error_trap_pop ();
gdk_window_add_filter (socket->plug_window,
gtk_socket_filter_func, socket);
/* Add a pointer to the socket on our toplevel window */
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
if (toplevel && GTK_IS_WINDOW (toplevel))
gtk_window_add_embedded_xid (GTK_WINDOW (toplevel), xid);
gtk_widget_queue_resize (GTK_WIDGET (socket));
}
if (socket->plug_window)
g_signal_emit (G_OBJECT (socket), socket_signals[PLUG_ADDED], 0);
}
static void
send_xembed_message (GtkSocket *socket,
glong message,
glong detail,
glong data1,
glong data2,
guint32 time)
{
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket: Sending XEMBED message of type %d", message));
if (socket->plug_window)
{
XEvent xevent;
xevent.xclient.window = GDK_WINDOW_XWINDOW (socket->plug_window);
xevent.xclient.type = ClientMessage;
xevent.xclient.message_type = gdk_atom_intern ("_XEMBED", FALSE);
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 (socket->plug_window),
False, NoEventMask, &xevent);
gdk_flush ();
gdk_error_trap_pop ();
}
}
static gboolean
xembed_get_info (GdkWindow *gdk_window,
unsigned long *version,
unsigned long *flags)
{
Display *display = GDK_WINDOW_XDISPLAY (gdk_window);
Window window = GDK_WINDOW_XWINDOW (gdk_window);
Atom xembed_info_atom = gdk_atom_intern ("_XEMBED_INFO", FALSE);
Atom type;
int format;
unsigned long nitems, bytes_after;
unsigned char *data;
unsigned long *data_long;
int status;
gdk_error_trap_push();
status = XGetWindowProperty (display, window,
xembed_info_atom,
0, 2, False,
xembed_info_atom, &type, &format,
&nitems, &bytes_after, &data);
gdk_error_trap_pop();
if (status != Success)
return FALSE; /* Window vanished? */
if (type == None) /* No info property */
return FALSE;
if (type != xembed_info_atom)
{
g_warning ("_XEMBED_INFO property has wrong type\n");
return FALSE;
}
if (nitems < 2)
{
g_warning ("_XEMBED_INFO too short\n");
XFree (data);
return FALSE;
}
data_long = (unsigned long *)data;
if (version)
*version = data_long[0];
if (flags)
*flags = data_long[1] & XEMBED_MAPPED;
XFree (data);
return TRUE;
}
static void
handle_xembed_message (GtkSocket *socket,
glong message,
glong detail,
glong data1,
glong data2,
guint32 time)
{
switch (message)
{
case XEMBED_EMBEDDED_NOTIFY:
case XEMBED_WINDOW_ACTIVATE:
case XEMBED_WINDOW_DEACTIVATE:
case XEMBED_MODALITY_ON:
case XEMBED_MODALITY_OFF:
case XEMBED_FOCUS_IN:
case XEMBED_FOCUS_OUT:
g_warning ("GtkSocket: Invalid _XEMBED message of type %ld received", message);
break;
case XEMBED_REQUEST_FOCUS:
gtk_socket_claim_focus (socket);
break;
case XEMBED_FOCUS_NEXT:
case XEMBED_FOCUS_PREV:
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
if (toplevel)
{
gtk_widget_child_focus (toplevel,
(message == XEMBED_FOCUS_NEXT ?
GTK_DIR_TAB_FORWARD : GTK_DIR_TAB_BACKWARD));
}
break;
}
case XEMBED_GRAB_KEY:
#if 0
add_grabbed_key (socket, data1, data2);
#endif
break;
case XEMBED_UNGRAB_KEY:
#if 0
remove_grabbed_key (socket, data1, data2);
#endif
break;
default:
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket: Ignoring unknown _XEMBED message of type %ld", message));
break;
}
}
static void
map_request (GtkSocket *socket)
{
if (!socket->is_mapped)
{
socket->is_mapped = TRUE;
socket->need_map = TRUE;
gtk_widget_queue_resize (GTK_WIDGET (socket));
}
}
static void
unmap_notify (GtkSocket *socket)
{
if (socket->is_mapped)
{
socket->is_mapped = FALSE;
gtk_widget_queue_resize (GTK_WIDGET (socket));
}
}
static GdkFilterReturn
gtk_socket_filter_func (GdkXEvent *gdk_xevent, GdkEvent *event, gpointer data)
{
GtkSocket *socket;
GtkWidget *widget;
XEvent *xevent;
GdkFilterReturn return_val;
socket = GTK_SOCKET (data);
widget = GTK_WIDGET (socket);
xevent = (XEvent *)gdk_xevent;
return_val = GDK_FILTER_CONTINUE;
if (socket->plug_widget)
return return_val;
switch (xevent->type)
{
case ClientMessage:
if (xevent->xclient.message_type == gdk_atom_intern ("_XEMBED", FALSE))
{
handle_xembed_message (socket,
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_val = GDK_FILTER_REMOVE;
}
break;
case CreateNotify:
{
XCreateWindowEvent *xcwe = &xevent->xcreatewindow;
if (!socket->plug_window)
{
gtk_socket_add_window (socket, xcwe->window, FALSE);
if (socket->plug_window)
{
socket->request_width = xcwe->width;
socket->request_height = xcwe->height;
socket->have_size = TRUE;
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - window created with size: %d %d",
socket->request_width,
socket->request_height));
}
}
return_val = GDK_FILTER_REMOVE;
break;
}
case ConfigureRequest:
{
XConfigureRequestEvent *xcre = &xevent->xconfigurerequest;
if (!socket->plug_window)
gtk_socket_add_window (socket, xcre->window, FALSE);
if (socket->plug_window)
{
if (xcre->value_mask & (CWWidth | CWHeight))
{
socket->request_width = xcre->width;
socket->request_height = xcre->height;
socket->have_size = TRUE;
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - configure request: %d %d",
socket->request_width,
socket->request_height));
gtk_widget_queue_resize (widget);
}
else if (xcre->value_mask & (CWX | CWY))
{
gtk_socket_send_configure_event (socket);
}
/* Ignore stacking requests. */
return_val = GDK_FILTER_REMOVE;
}
break;
}
case DestroyNotify:
{
XDestroyWindowEvent *xdwe = &xevent->xdestroywindow;
/* Note that we get destroy notifies both from SubstructureNotify on
* our window and StructureNotify on socket->plug_window
*/
if (socket->plug_window && (xdwe->window == GDK_WINDOW_XWINDOW (socket->plug_window)))
{
GtkWidget *toplevel;
gboolean result;
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - destroy notify"));
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
if (toplevel && GTK_IS_WINDOW (toplevel))
gtk_window_remove_embedded_xid (GTK_WINDOW (toplevel), xdwe->window);
gdk_window_destroy_notify (socket->plug_window);
g_object_unref (socket->plug_window);
socket->plug_window = NULL;
g_object_ref (widget);
g_signal_emit (G_OBJECT (widget), socket_signals[PLUG_REMOVED], 0, &result);
if (!result)
gtk_widget_destroy (widget);
g_object_unref (widget);
return_val = GDK_FILTER_REMOVE;
}
break;
}
case FocusIn:
if (xevent->xfocus.mode == EMBEDDED_APP_WANTS_FOCUS)
{
gtk_socket_claim_focus (socket);
}
else if (xevent->xfocus.detail == NotifyInferior)
{
#if 0
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (widget);
if (toplevel && GTK_IS_WINDOW (topelevel))
{
XSetInputFocus (GDK_DISPLAY (),
GDK_WINDOW_XWINDOW (toplevel->window),
RevertToParent, CurrentTime); /* FIXME? */
}
#endif
}
return_val = GDK_FILTER_REMOVE;
break;
case FocusOut:
return_val = GDK_FILTER_REMOVE;
break;
case MapRequest:
if (!socket->plug_window)
gtk_socket_add_window (socket, xevent->xmaprequest.window, FALSE);
if (socket->plug_window)
{
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - Map Request"));
map_request (socket);
return_val = GDK_FILTER_REMOVE;
}
break;
case PropertyNotify:
if (socket->plug_window &&
xevent->xproperty.window == GDK_WINDOW_XWINDOW (socket->plug_window))
{
GdkDragProtocol protocol;
if ((xevent->xproperty.atom == gdk_atom_intern ("XdndAware", FALSE)) ||
(xevent->xproperty.atom == gdk_atom_intern ("_MOTIF_DRAG_RECEIVER_INFO", FALSE)))
{
gdk_error_trap_push ();
if (gdk_drag_get_protocol (xevent->xproperty.window, &protocol))
gtk_drag_dest_set_proxy (GTK_WIDGET (socket),
socket->plug_window,
protocol, TRUE);
gdk_flush ();
gdk_error_trap_pop ();
}
else if (xevent->xproperty.atom == gdk_atom_intern ("_XEMBED_INFO", FALSE))
{
unsigned long flags;
if (xembed_get_info (socket->plug_window, NULL, &flags))
{
gboolean was_mapped = socket->is_mapped;
gboolean is_mapped = (flags & XEMBED_MAPPED) != 0;
if (was_mapped != is_mapped)
{
if (is_mapped)
map_request (socket);
else
{
gdk_error_trap_push ();
gdk_window_show (socket->plug_window);
gdk_flush ();
gdk_error_trap_pop ();
unmap_notify (socket);
}
}
}
}
return_val = GDK_FILTER_REMOVE;
}
break;
case ReparentNotify:
{
XReparentEvent *xre = &xevent->xreparent;
if (!socket->plug_window && xre->parent == GDK_WINDOW_XWINDOW (widget->window))
{
gtk_socket_add_window (socket, xre->window, FALSE);
if (socket->plug_window)
{
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - window reparented",
socket->request_width,
socket->request_height));
}
return_val = GDK_FILTER_REMOVE;
}
break;
}
case UnmapNotify:
if (socket->plug_window &&
xevent->xunmap.window == GDK_WINDOW_XWINDOW (socket->plug_window))
{
GTK_NOTE(PLUGSOCKET,
g_message ("GtkSocket - Unmap notify"));
unmap_notify (socket);
return_val = GDK_FILTER_REMOVE;
}
break;
}
return return_val;
}
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