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98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* $Xorg: DrLine.c,v 1.4 2001/02/09 02:03:32 xorgcvs Exp $ */
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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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/* $XFree86: xc/lib/X11/DrLine.c,v 1.4 2001/12/14 19:53:59 dawes Exp $ */
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#include "Xlibint.h"
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/* precompute the maximum size of batching request allowed */
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#define wsize (SIZEOF(xPolySegmentReq) + WLNSPERBATCH * SIZEOF(xSegment))
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#define zsize (SIZEOF(xPolySegmentReq) + ZLNSPERBATCH * SIZEOF(xSegment))
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int
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XDrawLine (dpy, d, gc, x1, y1, x2, y2)
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register Display *dpy;
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Drawable d;
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GC gc;
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int x1, y1, x2, y2;
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{
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register xSegment *segment;
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#ifdef MUSTCOPY
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xSegment segmentdata;
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long len = SIZEOF(xSegment);
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segment = &segmentdata;
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#endif /* not MUSTCOPY */
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LockDisplay(dpy);
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FlushGC(dpy, gc);
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{
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register xPolySegmentReq *req = (xPolySegmentReq *) dpy->last_req;
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/* if same as previous request, with same drawable, batch requests */
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if (
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(req->reqType == X_PolySegment)
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&& (req->drawable == d)
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&& (req->gc == gc->gid)
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&& ((dpy->bufptr + SIZEOF(xSegment)) <= dpy->bufmax)
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&& (((char *)dpy->bufptr - (char *)req) < (gc->values.line_width ?
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wsize : zsize)) ) {
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req->length += SIZEOF(xSegment) >> 2;
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#ifndef MUSTCOPY
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segment = (xSegment *) dpy->bufptr;
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dpy->bufptr += SIZEOF(xSegment);
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#endif /* not MUSTCOPY */
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}
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else {
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GetReqExtra (PolySegment, SIZEOF(xSegment), req);
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req->drawable = d;
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req->gc = gc->gid;
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#ifdef MUSTCOPY
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dpy->bufptr -= SIZEOF(xSegment);
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#else
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segment = (xSegment *) NEXTPTR(req,xPolySegmentReq);
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#endif /* MUSTCOPY */
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}
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segment->x1 = x1;
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segment->y1 = y1;
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segment->x2 = x2;
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segment->y2 = y2;
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#ifdef MUSTCOPY
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Data (dpy, (char *) &segmentdata, len);
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#endif /* MUSTCOPY */
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UnlockDisplay(dpy);
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SyncHandle();
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}
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return 1;
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}
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