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109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
/*
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* $XFree86: $
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*
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* Copyright © 2002 Carl D. Worth
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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 Carl
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* D. Worth not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Carl D. Worth makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL CARL D. WORTH BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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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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XrStatus status;
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XrState *xrs;
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xrs = malloc(sizeof(XrState));
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if (xrs) {
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status = _XrStateInit(xrs, dpy);
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if (status) {
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free(xrs);
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return NULL;
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}
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}
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return xrs;
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}
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XrStatus
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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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xrs->status = XrStatusSuccess;
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return _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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XrStatus
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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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if (top == NULL)
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return XrStatusNoMemory;
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top->next = xrs->stack;
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xrs->stack = top;
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return XrStatusSuccess;
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}
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XrStatus
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_XrStatePop(XrState *xrs)
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{
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XrGState *top;
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if (xrs->stack == NULL)
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return XrStatusInvalidRestore;
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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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return XrStatusSuccess;
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}
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