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/* Common code between client and shell widgets -- Xt only.
Copyright (C) 1993, 1994 Sun Microsystems, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Synched up with: Not in FSF. */
/* Written by Ben Wing, September 1993. */
#ifdef emacs
#include <config.h>
#ifndef EXTERNAL_WIDGET
ERROR! This ought not be getting compiled if EXTERNAL_WIDGET is undefined
#endif
void fatal (CONST char *fmt, ...);
#else /* not emacs */
static void fatal (char *msg);
#endif
#include <X11/Intrinsic.h>
#include <stdlib.h>
#include <stdio.h>
#include "extw-Xt.h"
/* Yeah, that's portable! */
int _XtwaitForSomething(
Boolean ignoreTimers,
Boolean ignoreInputs,
Boolean ignoreEvents,
Boolean block,
unsigned long *howlong,
XtAppContext app
);
#ifdef DEBUG_WIDGET
static int geom_masks[] = {
CWX, CWY, CWWidth, CWHeight, CWBorderWidth, CWSibling, CWStackMode,
XtCWQueryOnly };
static char *geom_mask_strings[] = {
"CWX", "CWY", "CWWidth", "CWHeight", "CWBorderWidth",
"CWSibling", "CWStackMode", "XtCWQueryOnly" };
static int stack_modes[] = {
Below, TopIf, BottomIf, Opposite, XtSMDontChange };
static char *stack_mode_strings[] = {
"Below", "TopIf", "BottomIf", "Opposite", "XtSMDontChange" };
static void
print_geometry_structure(XtWidgetGeometry *xwg)
{
int num = sizeof(geom_masks)/sizeof(int);
int i;
printf (" masks:");
for (i=0; i<num; i++)
if (xwg->request_mode & geom_masks[i])
printf (" %s", geom_mask_strings[i]);
printf ("\n");
printf (" x:%d y:%d\n", xwg->x, xwg->y);
printf (" width:%d height:%d border_width:%d\n", xwg->width,
xwg->height, xwg->border_width);
printf (" sibling: %x\n", xwg->sibling);
printf (" stack_mode: ");
for (i=0, num=sizeof(stack_modes)/sizeof(int); i<num; i++)
if (xwg->stack_mode == stack_modes[i]) {
printf ("%s", stack_mode_strings[i]);
break;
}
printf ("\n");
}
static void
print_geometry_result (XtGeometryResult res)
{
printf ("result: %s\n",
res == XtGeometryYes ? "XtGeometryYes" :
res == XtGeometryNo ? "XtGeometryNo" :
res == XtGeometryAlmost ? "XtGeometryAlmost" :
res == XtGeometryDone ? "XtGeometryDone" :
"unknown");
}
#endif
#ifndef emacs
static void
fatal (char *msg)
{
fprintf (stderr, "%s", msg);
exit (1);
}
#endif
/* put a geometry specification in the specified property on the window
of the specified widget, and send a notification message to tell the
client-side widget about this. */
void
extw_send_geometry_value(Display *display, Window win, Atom property,
en_extw_notify type, XtWidgetGeometry *xwg,
long data0)
{
if (xwg != NULL)
XChangeProperty(display, win, property,
a_EXTW_WIDGET_GEOMETRY, 32, PropModeReplace,
(unsigned char *) xwg, sizeof(*xwg)/sizeof(int));
extw_send_notify_3(display, win, type, data0, 0, 0);
}
/* get the geometry specification stored in the specified property of the
specified widget's window. */
void
extw_get_geometry_value(Display *display, Window win, Atom property,
XtWidgetGeometry *xwg)
{
Atom dummy;
int format;
unsigned long nitems, bytes_after;
unsigned char *prop;
if (XGetWindowProperty(display, win, property, 0,
sizeof(*xwg)/4, False, a_EXTW_WIDGET_GEOMETRY,
&dummy, &format, &nitems, &bytes_after,
&prop) != Success)
goto error;
if (format != 8*sizeof(int) || bytes_after) {
XFree((char *) prop);
goto error;
}
*xwg = * (XtWidgetGeometry *) prop;
return;
error:
fatal("Unable to retrieve property for widget-geometry");
#if 0
XtAppErrorMsg(XtWidgetToApplicationContext((Widget)w),
"invalidProperty","get_geometry_value",XtCXtToolkitError,
"Unable to retrieve property for widget-geometry",
(String *)NULL, (Cardinal *)NULL);
#endif
}
typedef struct {
Widget w;
unsigned long request_num;
en_extw_notify type;
} QueryStruct;
/* check if an event is of the sort we're looking for */
static Bool
isMine(Display *dpy, XEvent *event, char *arg)
{
QueryStruct *q = (QueryStruct *) arg;
Widget w = q->w;
if ( (dpy != XtDisplay(w)) || (event->xany.window != XtWindow(w)) ) {
return FALSE;
}
if (event->xany.serial >= q->request_num) {
if (event->type == ClientMessage &&
event->xclient.message_type == a_EXTW_NOTIFY &&
event->xclient.data.l[0] == 1 - extw_which_side &&
event->xclient.data.l[1] == q->type)
return TRUE;
}
return FALSE;
}
/* wait for a ClientMessage of the specified type from the other widget, or
time-out. isMine() determines whether an event matches. Culled from
Shell.c. */
Bool
extw_wait_for_response(Widget w, XEvent *event, unsigned long request_num,
en_extw_notify type, unsigned long timeout)
{
XtAppContext app = XtWidgetToApplicationContext(w);
QueryStruct q;
XFlush(XtDisplay(w));
q.w = w;
q.request_num = request_num;
q.type = type;
for(;;) {
/*
* look for match event
*/
if (XCheckIfEvent( XtDisplay(w), event, isMine, (char*)&q))
return TRUE;
if (_XtwaitForSomething(TRUE, TRUE, FALSE, TRUE, &timeout, app)
!= -1) continue;
if (timeout == 0)
return FALSE;
}
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.