272 lines
7.1 KiB
C
272 lines
7.1 KiB
C
/* The lwlib interface to "xlwmenu" menus.
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Copyright (C) 1992 Lucid, Inc.
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Copyright (C) 1994, 2000-2024 Free Software Foundation, Inc.
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This file is part of the Lucid Widget Library.
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The Lucid Widget Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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The Lucid Widget Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <setjmp.h>
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#include <lisp.h>
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#include "lwlib-Xlw.h"
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#include <X11/StringDefs.h>
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#include <X11/IntrinsicP.h>
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#include <X11/ObjectP.h>
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#include <X11/CompositeP.h>
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#include <X11/Shell.h>
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#include "xlwmenu.h"
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#if 0
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#include <stdio.h>
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/* Print the complete X resource name of widget WIDGET to stderr.
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This is sometimes handy to have available. */
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void
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x_print_complete_resource_name (Widget widget)
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{
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int i;
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String names[100];
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for (i = 0; i < 100 && widget != NULL; ++i)
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{
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names[i] = XtName (widget);
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widget = XtParent (widget);
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}
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for (--i; i >= 1; --i)
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fprintf (stderr, "%s.", names[i]);
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fprintf (stderr, "%s\n", names[0]);
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}
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#endif /* 0 */
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/* Menu callbacks */
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/* Callback XtNhighlightCallback for Lucid menus. W is the menu
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widget, CLIENT_DATA contains a pointer to the widget_instance
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for the menu, CALL_DATA contains a pointer to the widget_value
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structure for the highlighted menu item. The latter may be null
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if there isn't any highlighted menu item. */
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static void
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highlight_hook (Widget w, XtPointer client_data, XtPointer call_data)
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{
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widget_instance *instance = (widget_instance *) client_data;
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if (instance->info->highlight_cb
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&& !w->core.being_destroyed)
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instance->info->highlight_cb (w, instance->info->id, call_data);
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}
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static void
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enter_hook (Widget w, XtPointer client_data, XtPointer call_data)
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{
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highlight_hook (w, client_data, call_data);
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}
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static void
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leave_hook (Widget w, XtPointer client_data, XtPointer call_data)
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{
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highlight_hook (w, client_data, NULL);
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}
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static void
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pre_hook (Widget w, XtPointer client_data, XtPointer call_data)
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{
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widget_instance* instance = (widget_instance*)client_data;
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widget_value* val;
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if (w->core.being_destroyed)
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return;
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val = lw_get_widget_value_for_widget (instance, w);
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if (instance->info->pre_activate_cb)
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instance->info->pre_activate_cb (w, instance->info->id,
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val ? val->call_data : NULL);
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}
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static void
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pick_hook (Widget w, XtPointer client_data, XtPointer call_data)
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{
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widget_instance* instance = (widget_instance*)client_data;
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widget_value* contents_val = (widget_value*)call_data;
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widget_value* widget_val;
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XtPointer widget_arg;
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if (w->core.being_destroyed)
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return;
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if (instance->info->selection_cb && contents_val && contents_val->enabled
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&& !contents_val->contents)
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instance->info->selection_cb (w, instance->info->id,
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contents_val->call_data);
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widget_val = lw_get_widget_value_for_widget (instance, w);
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widget_arg = widget_val ? widget_val->call_data : NULL;
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if (instance->info->post_activate_cb)
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instance->info->post_activate_cb (w, instance->info->id, widget_arg);
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}
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/* creation functions */
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static Widget
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xlw_create_menubar (widget_instance *instance)
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{
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Widget widget;
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Arg al[5];
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int ac = 0;
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XtSetArg (al[ac], XtNmenu, instance->info->val); ac++;
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#ifdef emacs
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XtSetArg (al[ac], XtNshowGrip, 0); ac++;
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XtSetArg (al[ac], XtNresizeToPreferred, 1); ac++;
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XtSetArg (al[ac], XtNallowResize, 1); ac++;
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#endif
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/* This used to use XtVaCreateWidget, but an old Xt version
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has a bug in XtVaCreateWidget that frees instance->info->name. */
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widget
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= XtCreateWidget (instance->info->name, xlwMenuWidgetClass,
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instance->parent, al, ac);
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XtAddCallback (widget, XtNopen, pre_hook, (XtPointer)instance);
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XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance);
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XtAddCallback (widget, XtNleaveCallback, leave_hook, (XtPointer)instance);
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XtAddCallback (widget, XtNenterCallback, enter_hook, (XtPointer)instance);
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return widget;
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}
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static Widget
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xlw_create_popup_menu (widget_instance *instance)
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{
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Widget popup_shell
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= XtCreatePopupShell (instance->info->name, overrideShellWidgetClass,
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instance->parent, NULL, 0);
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Widget widget;
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Arg al[2];
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int ac = 0;
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XtSetArg (al[ac], XtNmenu, instance->info->val); ac++;
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XtSetArg (al[ac], XtNhorizontal, False); ac++;
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/* This used to use XtVaManagedCreateWidget, but an old Xt version
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has a bug in XtVaManagedCreateWidget that frees instance->info->name. */
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widget
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= XtCreateManagedWidget ("popup", xlwMenuWidgetClass,
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popup_shell, al, ac);
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XtAddCallback (widget, XtNselect, pick_hook, (XtPointer)instance);
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XtAddCallback (widget, XtNleaveCallback, leave_hook, (XtPointer)instance);
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XtAddCallback (widget, XtNenterCallback, enter_hook, (XtPointer)instance);
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return popup_shell;
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}
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widget_creation_entry
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xlw_creation_table [] =
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{
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{"menubar", xlw_create_menubar},
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{"popup", xlw_create_popup_menu},
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{NULL, NULL}
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};
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Boolean
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lw_lucid_widget_p (Widget widget)
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{
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WidgetClass the_class = XtClass (widget);
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if (the_class == xlwMenuWidgetClass)
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return True;
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if (the_class == overrideShellWidgetClass)
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return (XtClass (((CompositeWidget)widget)->composite.children [0])
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== xlwMenuWidgetClass);
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return False;
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}
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void
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xlw_update_one_widget (widget_instance* instance, Widget widget,
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widget_value* val, Boolean deep_p)
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{
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Arg al[1];
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/* This used to use XtVaSetValues, but some old Xt versions
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that have a bug in XtVaCreateWidget might have it here too. */
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XtSetArg (al[0], XtNmenu, instance->info->val);
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XtSetValues (widget, al, 1);
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}
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void
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xlw_update_one_value (widget_instance *instance,
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Widget widget,
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widget_value *val)
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{
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return;
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}
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void
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xlw_pop_instance (widget_instance* instance, Boolean up)
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{
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}
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void
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xlw_popup_menu (Widget widget, XEvent *event)
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{
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XlwMenuWidget mw;
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if (!XtIsShell (widget))
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return;
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mw = (XlwMenuWidget)((CompositeWidget)widget)->composite.children [0];
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if (event)
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XtCallActionProc ((Widget) mw, "start", event, NULL, 0);
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else
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{
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XEvent dummy;
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XButtonPressedEvent *bd = &dummy.xbutton;
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bd->type = ButtonPress;
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bd->serial = 0;
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bd->send_event = 0;
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bd->display = XtDisplay (widget);
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bd->window = XtWindow (XtParent (widget));
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bd->time = CurrentTime;
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bd->button = 0;
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XQueryPointer (bd->display, bd->window, &bd->root,
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&bd->subwindow, &bd->x_root, &bd->y_root,
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&bd->x, &bd->y, &bd->state);
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XtCallActionProc ((Widget) mw, "start", &dummy, NULL, 0);
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}
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}
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/* Destruction of instances */
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void
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xlw_destroy_instance (widget_instance *instance)
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{
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if (instance->widget)
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XtDestroyWidget (instance->widget);
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}
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