mirror of
https://gitlab.freedesktop.org/cairo/cairo.git
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95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
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/*
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* $XFree86: $
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*
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* Copyright <EFBFBD> 2002 University of Southern California
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of University
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* of Southern California not be used in advertising or publicity
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* pertaining to distribution of the software without specific,
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* written prior permission. University of Southern California makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* UNIVERSITY OF SOUTHERN CALIFORNIA DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL UNIVERSITY OF
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* SOUTHERN CALIFORNIA BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Carl Worth, USC, Information Sciences Institute */
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#include <stdlib.h>
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#include "xrint.h"
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XrState *
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XrStateCreate(Display *dpy)
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{
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XrState *xrs;
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xrs = malloc(sizeof(XrState));
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XrStateInit(xrs, dpy);
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return xrs;
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}
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void
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XrStateInit(XrState *xrs, Display *dpy)
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{
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xrs->dpy = dpy;
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xrs->stack = NULL;
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XrStatePush(xrs);
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}
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void
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XrStateDeinit(XrState *xrs)
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{
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while (xrs->stack) {
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XrStatePop(xrs);
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}
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}
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void
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XrStateDestroy(XrState *xrs)
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{
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XrStateDeinit(xrs);
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free(xrs);
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}
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void
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XrStatePush(XrState *xrs)
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{
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XrGState *top;
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if (xrs->stack) {
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top = XrGStateClone(xrs->stack);
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} else {
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top = XrGStateCreate(xrs->dpy);
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}
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top->next = xrs->stack;
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xrs->stack = top;
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}
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void
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XrStatePop(XrState *xrs)
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{
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XrGState *top;
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if (xrs->stack) {
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top = xrs->stack;
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xrs->stack = top->next;
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XrGStateDestroy(top);
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}
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}
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