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/* The lwlib interface to "xlwmenu" menus.
Copyright (C) 1992 Lucid, Inc.
Copyright (C) 1994, 2000-2011 Free Software Foundation, 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <setjmp.h>
#include <lisp.h>
#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"
#if 0
#include <stdio.h>
/* Print the complete X resource name of widget WIDGET to stderr.
This is sometimes handy to have available. */
void
x_print_complete_resource_name (Widget widget)
{
int i;
String names[100];
for (i = 0; i < 100 && widget != NULL; ++i)
{
names[i] = XtName (widget);
widget = XtParent (widget);
}
for (--i; i >= 1; --i)
fprintf (stderr, "%s.", names[i]);
fprintf (stderr, "%s\n", names[0]);
}
#endif /* 0 */
/* Menu callbacks */
/* Callback XtNhighlightCallback for Lucid menus. W is the menu
widget, CLIENT_DATA contains a pointer to the widget_instance
for the menu, CALL_DATA contains a pointer to the widget_value
structure for the highlighted menu item. The latter may be null
if there isn't any highlighted menu item. */
static void
highlight_hook (Widget w, XtPointer client_data, XtPointer call_data)
{
widget_instance *instance = (widget_instance *) client_data;
if (instance->info->highlight_cb
&& !w->core.being_destroyed)
instance->info->highlight_cb (w, instance->info->id, call_data);
}
static void
enter_hook (Widget w, XtPointer client_data, XtPointer call_data)
{
highlight_hook (w, client_data, call_data);
}
static void
leave_hook (Widget w, XtPointer client_data, XtPointer call_data)
{
highlight_hook (w, client_data, NULL);
}
static void
pre_hook (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 (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 (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);
XtAddCallback (widget, XtNleaveCallback, leave_hook, (XtPointer)instance);
XtAddCallback (widget, XtNenterCallback, enter_hook, (XtPointer)instance);
return widget;
}
static Widget
xlw_create_popup_menu (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);
XtAddCallback (widget, XtNleaveCallback, leave_hook, (XtPointer)instance);
XtAddCallback (widget, XtNenterCallback, enter_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)
{
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 (widget_instance* instance, Widget widget,
widget_value* val, Boolean deep_p)
{
Arg al[1];
/* 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 (widget_instance *instance,
Widget widget,
widget_value *val)
{
return;
}
void
xlw_pop_instance (widget_instance* instance, Boolean up)
{
}
void
xlw_popup_menu (Widget widget, XEvent *event)
{
XlwMenuWidget mw;
if (!XtIsShell (widget))
return;
mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0];
if (event)
XtCallActionProc ((Widget) mw, "start", event, NULL, 0);
else
{
XEvent dummy;
XButtonPressedEvent *bd = &dummy.xbutton;
bd->type = ButtonPress;
bd->serial = 0;
bd->send_event = 0;
bd->display = XtDisplay (widget);
bd->window = XtWindow (XtParent (widget));
bd->time = CurrentTime;
bd->button = 0;
XQueryPointer (bd->display, bd->window, &bd->root,
&bd->subwindow, &bd->x_root, &bd->y_root,
&bd->x, &bd->y, &bd->state);
XtCallActionProc ((Widget) mw, "start", &dummy, NULL, 0);
}
}
/* Destruction of instances */
void
xlw_destroy_instance (widget_instance *instance)
{
if (instance->widget)
XtDestroyWidget (instance->widget);
}
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