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/*
* $XFree86: $
*
* Copyright © 2002 Carl D. Worth
*
* 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 Carl
* D. Worth not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Carl D. Worth makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CARL D. WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CARL D. WORTH 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.
*/
#include <stdlib.h>
#include "xrint.h"
XrState *
_XrStateCreate(Display *dpy)
{
XrStatus status;
XrState *xrs;
xrs = malloc(sizeof(XrState));
if (xrs) {
status = _XrStateInit(xrs, dpy);
if (status) {
free(xrs);
return NULL;
}
}
return xrs;
}
XrStatus
_XrStateInit(XrState *xrs, Display *dpy)
{
xrs->dpy = dpy;
xrs->stack = NULL;
xrs->status = XrStatusSuccess;
return _XrStatePush(xrs);
}
void
_XrStateDeinit(XrState *xrs)
{
while (xrs->stack) {
_XrStatePop(xrs);
}
}
void
_XrStateDestroy(XrState *xrs)
{
_XrStateDeinit(xrs);
free(xrs);
}
XrStatus
_XrStatePush(XrState *xrs)
{
XrGState *top;
if (xrs->stack) {
top = _XrGStateClone(xrs->stack);
} else {
top = _XrGStateCreate(xrs->dpy);
}
if (top == NULL)
return XrStatusNoMemory;
top->next = xrs->stack;
xrs->stack = top;
return XrStatusSuccess;
}
XrStatus
_XrStatePop(XrState *xrs)
{
XrGState *top;
if (xrs->stack == NULL)
return XrStatusInvalidRestore;
top = xrs->stack;
xrs->stack = top->next;
_XrGStateDestroy(top);
return XrStatusSuccess;
}
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