diff options
Diffstat (limited to 'fb/fbline.c')
| -rw-r--r-- | fb/fbline.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/fb/fbline.c b/fb/fbline.c new file mode 100644 index 000000000..b6cf1c84b --- /dev/null +++ b/fb/fbline.c @@ -0,0 +1,179 @@ +/* + * Id: fbline.c,v 1.1 1999/11/02 03:54:45 keithp Exp $ + * + * Copyright © 1998 Keith Packard + * + * 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 Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD 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. + */ +/* $XFree86: xc/programs/Xserver/fb/fbline.c,v 1.7 2001/01/17 07:40:02 keithp Exp $ */ + +#include "fb.h" + +void +fbZeroLine (DrawablePtr pDrawable, + GCPtr pGC, + int mode, + int npt, + DDXPointPtr ppt) +{ + FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); + int x1, y1, x2, y2; + int x, y; + int dashOffset; + int totalDash; + + x = pDrawable->x; + y = pDrawable->y; + x1 = ppt->x; + y1 = ppt->y; + dashOffset = pGC->dashOffset; + totalDash = 0; + if (pGC->lineStyle != LineSolid) + totalDash = pPriv->dashLength; + while (--npt) + { + ++ppt; + x2 = ppt->x; + y2 = ppt->y; + if (mode == CoordModePrevious) + { + x2 += x1; + y2 += y1; + } + fbSegment (pDrawable, pGC, x1 + x, y1 + y, + x2 + x, y2 + y, + npt == 1 && pGC->capStyle != CapNotLast, + &dashOffset); + x1 = x2; + y1 = y2; + } +} + +void +fbZeroSegment (DrawablePtr pDrawable, + GCPtr pGC, + int nseg, + xSegment *pSegs) +{ + int dashOffset; + int x, y; + Bool drawLast = pGC->capStyle != CapNotLast; + + x = pDrawable->x; + y = pDrawable->y; + while (nseg--) + { + dashOffset = pGC->dashOffset; + fbSegment (pDrawable, pGC, + pSegs->x1 + x, pSegs->y1 + y, + pSegs->x2 + x, pSegs->y2 + y, + drawLast, + &dashOffset); + pSegs++; + } +} + +void +fbFixCoordModePrevious (int npt, + DDXPointPtr ppt) +{ + int x, y; + + x = ppt->x; + y = ppt->y; + npt--; + while (npt--) + { + ppt++; + x = (ppt->x += x); + y = (ppt->y += y); + } +} + +void +fbPolyLine (DrawablePtr pDrawable, + GCPtr pGC, + int mode, + int npt, + DDXPointPtr ppt) +{ + void (*line) (DrawablePtr, GCPtr, int mode, int npt, DDXPointPtr ppt); + + if (pGC->lineWidth == 0) + { + line = fbZeroLine; +#ifndef FBNOPIXADDR + if (pGC->fillStyle == FillSolid && + pGC->lineStyle == LineSolid && + REGION_NUM_RECTS (fbGetCompositeClip(pGC)) == 1) + { + switch (pDrawable->bitsPerPixel) { + case 8: line = fbPolyline8; break; + case 16: line = fbPolyline16; break; +#ifdef FB_24BIT + case 24: line = fbPolyline24; break; +#endif + case 32: line = fbPolyline32; break; + } + } +#endif + } + else + { + if (pGC->lineStyle != LineSolid) + line = miWideDash; + else + line = miWideLine; + } + (*line) (pDrawable, pGC, mode, npt, ppt); +} + +void +fbPolySegment (DrawablePtr pDrawable, + GCPtr pGC, + int nseg, + xSegment *pseg) +{ + void (*seg) (DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment *pseg); + + if (pGC->lineWidth == 0) + { + seg = fbZeroSegment; +#ifndef FBNOPIXADDR + if (pGC->fillStyle == FillSolid && + pGC->lineStyle == LineSolid && + REGION_NUM_RECTS (fbGetCompositeClip(pGC)) == 1) + { + switch (pDrawable->bitsPerPixel) { + case 8: seg = fbPolySegment8; break; + case 16: seg = fbPolySegment16; break; +#ifdef FB_24BIT + case 24: seg = fbPolySegment24; break; +#endif + case 32: seg = fbPolySegment32; break; + } + } +#endif + } + else + { + seg = miPolySegment; + } + (*seg) (pDrawable, pGC, nseg, pseg); +} |