180 lines
4.8 KiB
C
180 lines
4.8 KiB
C
/***********************************************************
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Copyright 1987,1998 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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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* $Xorg: cfbhrzvert.c,v 1.4 2001/02/09 02:04:38 xorgcvs Exp $ */
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#include "X.h"
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#include "gc.h"
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#include "window.h"
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#include "pixmap.h"
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#include "region.h"
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#include "cfb.h"
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#include "cfbmskbits.h"
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/* horizontal solid line
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abs(len) > 1
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*/
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cfbHorzS(rop, and, xor, addrl, nlwidth, x1, y1, len)
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register int rop;
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register unsigned long and;
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register unsigned long xor;
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register unsigned long *addrl; /* pointer to base of bitmap */
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int nlwidth; /* width in longwords of bitmap */
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int x1; /* initial point */
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int y1;
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int len; /* length of line */
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{
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register int nlmiddle;
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register unsigned long startmask;
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register unsigned long endmask;
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addrl = addrl + (y1 * nlwidth) + (x1 >> PWSH);
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/* all bits inside same longword */
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if ( ((x1 & PIM) + len) < PPW)
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{
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maskpartialbits(x1, len, startmask);
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*addrl = DoMaskRRop (*addrl, and, xor, startmask);
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}
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else
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{
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maskbits(x1, len, startmask, endmask, nlmiddle);
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if (rop == GXcopy)
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{
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if (startmask)
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{
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*addrl = (*addrl & ~startmask) | (xor & startmask);
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addrl++;
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}
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while (nlmiddle--)
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*addrl++ = xor;
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if (endmask)
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*addrl = (*addrl & ~endmask) | (xor & endmask);
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}
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else
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{
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if (startmask)
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{
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*addrl = DoMaskRRop (*addrl, and, xor, startmask);
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addrl++;
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}
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if (rop == GXxor)
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{
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while (nlmiddle--)
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*addrl++ ^= xor;
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}
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else
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{
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while (nlmiddle--)
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{
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*addrl = DoRRop (*addrl, and, xor);
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addrl++;
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}
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}
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if (endmask)
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*addrl = DoMaskRRop (*addrl, and, xor, endmask);
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}
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}
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}
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/* vertical solid line */
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cfbVertS(rop, and, xor, addrl, nlwidth, x1, y1, len)
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int rop;
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register unsigned long and, xor;
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register unsigned long *addrl; /* pointer to base of bitmap */
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register int nlwidth; /* width in longwords of bitmap */
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int x1, y1; /* initial point */
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register int len; /* length of line */
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{
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#ifdef PIXEL_ADDR
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register PixelType *bits = (PixelType *) addrl;
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nlwidth <<= PWSH;
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bits = bits + (y1 * nlwidth) + x1;
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/*
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* special case copy and xor to avoid a test per pixel
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*/
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if (rop == GXcopy)
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{
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while (len--)
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{
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*bits = xor;
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bits += nlwidth;
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}
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}
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else if (rop == GXxor)
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{
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while (len--)
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{
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*bits ^= xor;
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bits += nlwidth;
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}
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}
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else
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{
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while (len--)
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{
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*bits = DoRRop(*bits, and, xor);
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bits += nlwidth;
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}
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}
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#else /* !PIXEL_ADDR */
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addrl = addrl + (y1 * nlwidth) + (x1 >> PWSH);
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and |= ~cfbmask[x1 & PIM];
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xor &= cfbmask[x1 & PIM];
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while (len--)
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{
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*addrl = DoRRop (*addrl, and, xor);
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addrl += nlwidth;
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}
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#endif
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}
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