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/* The lwlib interface to "xlwmenu" menus.
Copyright (C) 1992 Lucid, Inc.
This file is part of the Lucid Widget Library.
The Lucid Widget Library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
The Lucid Widget 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "lwlib-Xlw.h"
#include <X11/StringDefs.h>
#include <X11/IntrinsicP.h>
#include <X11/ObjectP.h>
#include <X11/CompositeP.h>
#include <X11/Shell.h>
#include "xlwmenu.h"
/* Menu callbacks */
static void
pre_hook (w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
widget_instance* instance = (widget_instance*)client_data;
widget_value* val;
if (w->core.being_destroyed)
return;
val = lw_get_widget_value_for_widget (instance, w);
if (instance->info->pre_activate_cb)
instance->info->pre_activate_cb (w, instance->info->id,
val ? val->call_data : NULL);
}
static void
pick_hook (w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
widget_instance* instance = (widget_instance*)client_data;
widget_value* contents_val = (widget_value*)call_data;
widget_value* widget_val;
XtPointer widget_arg;
if (w->core.being_destroyed)
return;
if (instance->info->selection_cb && contents_val && contents_val->enabled
&& !contents_val->contents)
instance->info->selection_cb (w, instance->info->id,
contents_val->call_data);
widget_val = lw_get_widget_value_for_widget (instance, w);
widget_arg = widget_val ? widget_val->call_data : NULL;
if (instance->info->post_activate_cb)
instance->info->post_activate_cb (w, instance->info->id, widget_arg);
}
/* creation functions */
static Widget
xlw_create_menubar (instance)
widget_instance* instance;
{
Widget widget;
Arg al[5];
int ac = 0;
XtSetArg (al[ac], XtNmenu, instance->info->val); ac++;
#ifdef emacs
XtSetArg (al[ac], XtNshowGrip, 0); ac++;
XtSetArg (al[ac], XtNresizeToPreferred, 1); ac++;
XtSetArg (al[ac], XtNallowResize, 1); ac++;
#endif
/* This used to use XtVaCreateWidget, but an old Xt version
has a bug in XtVaCreateWidget that frees instance->info->name. */
widget
= XtCreateWidget (instance->info->name, xlwMenuWidgetClass,
instance->parent, al, ac);
XtAddCallback (widget, XtNopen, pre_hook, (XtPointer)instance);
XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance);
return widget;
}
static Widget
xlw_create_popup_menu (instance)
widget_instance* instance;
{
Widget popup_shell
= XtCreatePopupShell (instance->info->name, overrideShellWidgetClass,
instance->parent, NULL, 0);
Widget widget;
Arg al[2];
int ac = 0;
XtSetArg (al[ac], XtNmenu, instance->info->val); ac++;
XtSetArg (al[ac], XtNhorizontal, False); ac++;
/* This used to use XtVaManagedCreateWidget, but an old Xt version
has a bug in XtVaManagedCreateWidget that frees instance->info->name. */
widget
= XtCreateManagedWidget ("popup", xlwMenuWidgetClass,
popup_shell, al, ac);
XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance);
return popup_shell;
}
widget_creation_entry
xlw_creation_table [] =
{
{"menubar", xlw_create_menubar},
{"popup", xlw_create_popup_menu},
{NULL, NULL}
};
Boolean
lw_lucid_widget_p (widget)
Widget widget;
{
WidgetClass the_class = XtClass (widget);
if (the_class == xlwMenuWidgetClass)
return True;
if (the_class == overrideShellWidgetClass)
return (XtClass (((CompositeWidget)widget)->composite.children [0])
== xlwMenuWidgetClass);
return False;
}
void
xlw_update_one_widget (instance, widget, val, deep_p)
widget_instance* instance;
Widget widget;
widget_value* val;
Boolean deep_p;
{
XlwMenuWidget mw;
Arg al[1];
if (XtIsShell (widget))
mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0];
else
mw = (XlwMenuWidget)widget;
/* This used to use XtVaSetValues, but some old Xt versions
that have a bug in XtVaCreateWidget might have it here too. */
XtSetArg (al[0], XtNmenu, instance->info->val);
XtSetValues (widget, al, 1);
}
void
xlw_update_one_value (instance, widget, val)
widget_instance* instance;
Widget widget;
widget_value* val;
{
return;
}
void
xlw_pop_instance (instance, up)
widget_instance* instance;
Boolean up;
{
}
void
xlw_popup_menu (widget, event)
Widget widget;
XEvent *event;
{
XButtonPressedEvent dummy;
XlwMenuWidget mw;
if (!XtIsShell (widget))
return;
mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0];
if (event)
pop_up_menu (mw, event);
else
{
dummy.type = ButtonPress;
dummy.serial = 0;
dummy.send_event = 0;
dummy.display = XtDisplay (widget);
dummy.window = XtWindow (XtParent (widget));
dummy.time = CurrentTime;
dummy.button = 0;
XQueryPointer (dummy.display, dummy.window, &dummy.root,
&dummy.subwindow, &dummy.x_root, &dummy.y_root,
&dummy.x, &dummy.y, &dummy.state);
pop_up_menu (mw, &dummy);
}
}
/* Destruction of instances */
void
xlw_destroy_instance (instance)
widget_instance* instance;
{
if (instance->widget)
XtDestroyWidget (instance->widget);
}
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