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/*
* $XFree86: $
*
* Copyright © 2002 University of Southern California
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose 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 University
* of Southern California not be used in advertising or publicity
* pertaining to distribution of the software without specific,
* written prior permission. University of Southern California makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* UNIVERSITY OF SOUTHERN CALIFORNIA DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL UNIVERSITY OF
* SOUTHERN CALIFORNIA 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: Carl Worth, USC, Information Sciences Institute */
#include <stdlib.h>
#include "xrint.h"
XrState *
XrStateCreate(Display *dpy)
{
XrState *xrs;
xrs = malloc(sizeof(XrState));
XrStateInit(xrs, dpy);
return xrs;
}
void
XrStateInit(XrState *xrs, Display *dpy)
{
xrs->dpy = dpy;
xrs->stack = NULL;
XrStatePush(xrs);
}
void
XrStateDeinit(XrState *xrs)
{
while (xrs->stack) {
XrStatePop(xrs);
}
}
void
XrStateDestroy(XrState *xrs)
{
XrStateDeinit(xrs);
free(xrs);
}
void
XrStatePush(XrState *xrs)
{
XrGState *top;
if (xrs->stack) {
top = XrGStateClone(xrs->stack);
} else {
top = XrGStateCreate(xrs->dpy);
}
top->next = xrs->stack;
xrs->stack = top;
}
void
XrStatePop(XrState *xrs)
{
XrGState *top;
if (xrs->stack) {
top = xrs->stack;
xrs->stack = top->next;
XrGStateDestroy(top);
}
}
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