86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/*
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Copyright 1986, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "Xlibint.h"
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int
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XDrawPoints(
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register Display *dpy,
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Drawable d,
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GC gc,
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XPoint *points,
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int n_points,
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int mode) /* CoordMode */
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{
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register xPolyPointReq *req;
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register long nbytes;
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int n;
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int xoff, yoff;
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XPoint pt;
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xoff = yoff = 0;
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LockDisplay(dpy);
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FlushGC(dpy, gc);
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while (n_points) {
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GetReq(PolyPoint, req);
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req->drawable = d;
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req->gc = gc->gid;
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req->coordMode = mode;
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n = n_points;
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if (!dpy->bigreq_size && n > (dpy->max_request_size - req->length))
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n = dpy->max_request_size - req->length;
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SetReqLen(req, n, n);
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nbytes = ((long)n) << 2; /* watch out for macros... */
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if (xoff || yoff) {
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pt.x = xoff + points->x;
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pt.y = yoff + points->y;
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Data16 (dpy, (short *) &pt, 4);
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if (nbytes > 4) {
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Data16 (dpy, (short *) (points + 1), nbytes - 4);
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}
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} else {
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Data16 (dpy, (short *) points, nbytes);
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}
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n_points -= n;
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if (n_points && (mode == CoordModePrevious)) {
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register XPoint *pptr = points;
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points += n;
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while (pptr != points) {
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xoff += pptr->x;
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yoff += pptr->y;
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pptr++;
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}
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} else
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points += n;
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return 1;
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}
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