diff options
Diffstat (limited to 'ilbm/ilbmhrzvert.c')
| -rw-r--r-- | ilbm/ilbmhrzvert.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/ilbm/ilbmhrzvert.c b/ilbm/ilbmhrzvert.c new file mode 100644 index 000000000..fe2638167 --- /dev/null +++ b/ilbm/ilbmhrzvert.c @@ -0,0 +1,209 @@ +/* $XFree86: xc/programs/Xserver/ilbm/ilbmhrzvert.c,v 3.0 1996/08/18 01:53:55 dawes Exp $ */ +/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */ +/*********************************************************** + +Copyright (c) 1987 X Consortium + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +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 +X CONSORTIUM 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 X Consortium 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 X Consortium. + + +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. + +******************************************************************/ +/* $XConsortium: ilbmhrzvert.c,v 1.15 94/04/17 20:28:24 dpw Exp $ */ + +/* Modified jun 95 by Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be) + to use interleaved bitplanes instead of normal bitplanes */ + +#include "X.h" + +#include "gc.h" +#include "window.h" +#include "pixmap.h" +#include "region.h" + +#include "ilbm.h" +#include "maskbits.h" + +/* horizontal solid line + abs(len) > 1 +*/ +ilbmHorzS(pbase, nlwidth, auxDst, depthDst, x1, y1, len, rrops) +PixelType *pbase; /* pointer to base of bitmap */ +register int nlwidth; /* width in longwords of bitmap */ +int auxDst; +int depthDst; +int x1; /* initial point */ +int y1; +int len; /* length of line */ +register unsigned char *rrops; +{ + register PixelType *addrl; + register PixelType startmask; + register PixelType endmask; + register int nlmiddle; + register int d; + int saveNLmiddle; + + /* force the line to go left to right + but don't draw the last point + */ + if (len < 0) { + x1 += len; + x1 += 1; + len = -len; + } + + /* all bits inside same longword */ + if ( ((x1 & PIM) + len) < PPW) { + maskpartialbits(x1, len, startmask); + + for (d = 0; d < depthDst; d++) { + addrl = ilbmScanline(pbase, x1, y1, auxDst); + pbase += nlwidth; /* @@@ NEXT PLANE @@@ */ + + switch (rrops[d]) { + case RROP_BLACK: + *addrl &= ~startmask; + break; + case RROP_WHITE: + *addrl |= startmask; + break; + case RROP_INVERT: + *addrl ^= startmask; + break; + case RROP_NOP: + break; + } /* switch */ + } /* for (d = ...) */ + } else { + maskbits(x1, len, startmask, endmask, nlmiddle); + saveNLmiddle = nlmiddle; + + for (d = 0; d < depthDst; d++) { + addrl = ilbmScanline(pbase, x1, y1, auxDst); + pbase += nlwidth; /* @@@ NEXT PLANE @@@ */ + nlmiddle = saveNLmiddle; + + switch (rrops[d]) { + case RROP_BLACK: + if (startmask) + *addrl++ &= ~startmask; + Duff (nlmiddle, *addrl++ = 0x0); + if (endmask) + *addrl &= ~endmask; + break; + + case RROP_WHITE: + if (startmask) + *addrl++ |= startmask; + Duff (nlmiddle, *addrl++ = ~0); + if (endmask) + *addrl |= endmask; + break; + + case RROP_INVERT: + if (startmask) + *addrl++ ^= startmask; + Duff (nlmiddle, *addrl++ ^= ~0); + if (endmask) + *addrl ^= endmask; + break; + + case RROP_NOP: + break; + } /* switch */ + } /* for (d = ... ) */ + } +} + +/* 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. +*/ + +ilbmVertS(pbase, nlwidth, auxDst, depthDst, x1, y1, len, rrops) +PixelType *pbase; /* pointer to base of bitmap */ +register int nlwidth; /* width in longwords of bitmap */ +int auxDst; +int depthDst; +int x1, y1; /* initial point */ +register int len; /* length of line */ +unsigned char *rrops; +{ + register PixelType *addrl; + register PixelType bitmask; + int saveLen; + int d; + + if (len < 0) { + auxDst = -auxDst; + len = -len; + } + + saveLen = len; + + for (d = 0; d < depthDst; d++) { + addrl = ilbmScanline(pbase, x1, y1, auxDst); + pbase += nlwidth; /* @@@ NEXT PLANE @@@ */ + len = saveLen; + + switch (rrops[d]) { + case RROP_BLACK: + bitmask = rmask[x1 & PIM]; + Duff(len, *addrl &= bitmask; ilbmScanlineInc(addrl, auxDst) ); + break; + + case RROP_WHITE: + bitmask = mask[x1 & PIM]; + Duff(len, *addrl |= bitmask; ilbmScanlineInc(addrl, auxDst) ); + break; + + case RROP_INVERT: + bitmask = mask[x1 & PIM]; + Duff(len, *addrl ^= bitmask; ilbmScanlineInc(addrl, auxDst) ); + break; + + case RROP_NOP: + break; + } /* switch */ + } /* for (d = ...) */ +} |