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Diffstat (limited to 'mfb/mfbhrzvert.c')
| -rw-r--r-- | mfb/mfbhrzvert.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/mfb/mfbhrzvert.c b/mfb/mfbhrzvert.c new file mode 100644 index 000000000..5498a4c0b --- /dev/null +++ b/mfb/mfbhrzvert.c @@ -0,0 +1,172 @@ +/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */ +/*********************************************************** + +Copyright 1987, 1998 The Open Group + +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. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + + +Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +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 Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL 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. + +******************************************************************/ +/* $Xorg: mfbhrzvert.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */ +#include "X.h" + +#include "gc.h" +#include "window.h" +#include "pixmap.h" +#include "region.h" + +#include "mfb.h" +#include "maskbits.h" + +/* horizontal solid line + abs(len) > 1 +*/ +mfbHorzS(rop, addrl, nlwidth, x1, y1, len) +int rop; /* a reduced rasterop */ +register PixelType *addrl; /* pointer to base of bitmap */ +register int nlwidth; /* width in longwords of bitmap */ +int x1; /* initial point */ +int y1; +int len; /* length of line */ +{ + register PixelType startmask; + register PixelType endmask; + register int nlmiddle; + + + /* force the line to go left to right + but don't draw the last point + */ + if (len < 0) + { + x1 += len; + x1 += 1; + len = -len; + } + + addrl = mfbScanline(addrl, x1, y1, nlwidth); + + /* all bits inside same longword */ + if ( ((x1 & PIM) + len) < PPW) + { + maskpartialbits(x1, len, startmask); + if (rop == RROP_BLACK) + { + *addrl &= ~startmask; + } + else if (rop == RROP_WHITE) + { + *addrl |= startmask; + } + else if (rop == RROP_INVERT) + { + *addrl ^= startmask; + } + } + else + { + maskbits(x1, len, startmask, endmask, nlmiddle); + if (rop == RROP_BLACK) + { + if (startmask) + *addrl++ &= ~startmask; + Duff (nlmiddle, *addrl++ = 0x0); + if (endmask) + *addrl &= ~endmask; + } + else if (rop == RROP_WHITE) + { + if (startmask) + *addrl++ |= startmask; + Duff (nlmiddle, *addrl++ = ~0); + if (endmask) + *addrl |= endmask; + } + else if (rop == RROP_INVERT) + { + if (startmask) + *addrl++ ^= startmask; + Duff (nlmiddle, *addrl++ ^= ~0); + if (endmask) + *addrl ^= endmask; + } + } +} + +/* vertical solid line + this uses do loops because pcc (Ultrix 1.2, bsd 4.2) generates + better code. sigh. we know that len will never be 0 or 1, so + it's OK to use it. +*/ + +mfbVertS(rop, addrl, nlwidth, x1, y1, len) +int rop; /* a reduced rasterop */ +register PixelType *addrl; /* pointer to base of bitmap */ +register int nlwidth; /* width in longwords of bitmap */ +int x1, y1; /* initial point */ +register int len; /* length of line */ +{ + register PixelType bitmask; + + addrl = mfbScanline(addrl, x1, y1, nlwidth); + + if (len < 0) + { + nlwidth = -nlwidth; + len = -len; + } + + if (rop == RROP_BLACK) + { + bitmask = rmask[x1 & PIM]; + Duff(len, *addrl &= bitmask; mfbScanlineInc(addrl, nlwidth) ); + } + else if (rop == RROP_WHITE) + { + bitmask = mask[x1 & PIM]; + Duff(len, *addrl |= bitmask; mfbScanlineInc(addrl, nlwidth) ); + } + else if (rop == RROP_INVERT) + { + bitmask = mask[x1 & PIM]; + Duff(len, *addrl ^= bitmask; mfbScanlineInc(addrl, nlwidth) ); + } +} |