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/*
* Copyright 1993 The University of Newcastle upon Tyne
*
* Permission to use, copy, modify and distribute this software and its
* documentation for any purpose other than its commercial exploitation
* is hereby granted without fee, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of The University of Newcastle upon Tyne not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The University of
* Newcastle upon Tyne makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THE UNIVERSITY OF NEWCASTLE UPON TYNE DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE UNIVERSITY OF
* NEWCASTLE UPON TYNE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Author: Jim Wight (j.k.wight@newcastle.ac.uk)
* Department of Computing Science
* University of Newcastle upon Tyne, UK
*/
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include "AxeIntrinsic.h"
#include "util.h"
extern char *getenv();
unsigned char xerror;
int (*DefaultErrorHandler)();
static int
TrapError(dpy, error)
Display *dpy;
XErrorEvent *error;
{
xerror = error->error_code;
if (xerror != BadWindow)
{
DefaultErrorHandler(dpy, error);
}
return 0;
}
void
TrapErrors(dpy)
Display *dpy;
{
/*
* XSync is called to ensure that any outstanding
* errors are dealt with by the default handler.
*/
XSync(dpy, False);
DefaultErrorHandler = XSetErrorHandler(TrapError);
xerror = Success;
}
void
DontTrapErrors(dpy)
Display *dpy;
{
/*
* XSync is called to ensure that any error that occurs
* while we are trapping errors is dealt with before the
* default error handler is restored.
*/
XSync(dpy, False);
(void) XSetErrorHandler(NULL);
}
void
PopupCentred(popup, grabState)
Widget popup;
Boolean grabState;
{
Window root, child;
unsigned int mask;
XEvent event;
Dimension width, height, b_width;
Position x, y, max_x, max_y;
XtRealizeWidget(popup);
XQueryPointer(XtDisplay(popup), XtWindow(popup), &root, &child,
&event.xbutton.x_root, &event.xbutton.y_root,
&event.xbutton.x, &event.xbutton.y, &mask);
x = event.xbutton.x_root;
y = event.xbutton.y_root;
XtVaGetValues(popup,
XtNwidth, &width,
XtNheight, &height,
XtNborderWidth, &b_width,
NULL);
width += 2 * b_width;
height += 2 * b_width;
x -= ( (Position) width/2 );
if (x < 0) x = 0;
if (x > (max_x = (Position) (XtScreen(popup)->width - width))) x = max_x;
y -= ( (Position) height/2 );
if (y < 0) y = 0;
if (y > (max_y = (Position) (XtScreen(popup)->height - height))) y = max_y;
XtVaSetValues(popup,
XtNx, x,
XtNy, y,
NULL);
XtPopup(popup, grabState);
}
int
GetHostName(name, namelen)
char *name;
int namelen;
{
#if defined(SYSV) || defined(SVR4)
#include <sys/utsname.h>
struct utsname info;
int code;
if ( (code = uname(&info)) == 0)
{
strcpy(name, info.nodename);
}
return code;
#else
return gethostname(name, namelen);
#endif
}
Atom
HostUserServerAtom(display)
Display *display;
{
char host[MAXHOSTNAMELEN], *user, propName[MAXPATHLEN];
strcpy(propName, AXE_SERVER);
if (GetHostName(host, MAXHOSTNAMELEN - strlen(AXE_SERVER)) == 0)
{
strcat(propName, "_");
strcat(propName, host);
}
if ( (user = getenv("USER")) )
{
strcat(propName, "_");
strcat(propName, user);
}
return XInternAtom(display, propName, False);
}
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