DrArc.c revision 61b2299d 
1/* $Xorg: DrArc.c,v 1.4 2001/02/09 02:03:32 xorgcvs Exp $ */
2/*
3
4Copyright 1986, 1998  The Open Group
5
6Permission to use, copy, modify, distribute, and sell this software and its
7documentation for any purpose is hereby granted without fee, provided that
8the above copyright notice appear in all copies and that both that
9copyright notice and this permission notice appear in supporting
10documentation.
11
12The above copyright notice and this permission notice shall be included in
13all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
18OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22Except as contained in this notice, the name of The Open Group shall not be
23used in advertising or otherwise to promote the sale, use or other dealings
24in this Software without prior written authorization from The Open Group.
25
26*/
27/* $XFree86: xc/lib/X11/DrArc.c,v 1.3 2001/01/17 19:41:34 dawes Exp $ */
28
29/* Note to future maintainers:  XDrawArc does NOT batch successive PolyArc
30   requests into a single request like XDrawLine, XDrawPoint, etc.
31   We don't do this because X_PolyArc applies the GC's join-style if
32   the last point in one arc coincides with the first point in another.
33   The client wouldn't expect this and would have no easy way to defeat it. */
34
35#ifdef HAVE_CONFIG_H
36#include <config.h>
37#endif
38#include "Xlibint.h"
39
40int
41XDrawArc(
42    register Display *dpy,
43    Drawable d,
44    GC gc,
45    int x,
46    int y, /* INT16 */
47    unsigned int width,
48    unsigned int height, /* CARD16 */
49    int angle1,
50    int angle2) /* INT16 */
51{
52    register xPolyArcReq *req;
53    register xArc *arc;
54#ifdef MUSTCOPY
55    xArc arcdata;
56    long len = SIZEOF(xArc);
57
58    arc = &arcdata;
59#endif /* MUSTCOPY */
60
61    LockDisplay(dpy);
62    FlushGC(dpy, gc);
63    GetReqExtra (PolyArc, SIZEOF(xArc), req);
64
65    req->drawable = d;
66    req->gc = gc->gid;
67
68#ifndef MUSTCOPY
69    arc = (xArc *) NEXTPTR(req,xPolyArcReq);
70#endif /* MUSTCOPY */
71
72    arc->x = x;
73    arc->y = y;
74    arc->width = width;
75    arc->height = height;
76    arc->angle1 = angle1;
77    arc->angle2 = angle2;
78
79#ifdef MUSTCOPY
80    dpy->bufptr -= SIZEOF(xArc);
81    Data (dpy, (char *) arc, len);
82#endif /* MUSTCOPY */
83
84    UnlockDisplay(dpy);
85    SyncHandle();
86    return 1;
87}
88