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Diffstat (limited to 'mi/mipushpxl.c')
| -rw-r--r-- | mi/mipushpxl.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/mi/mipushpxl.c b/mi/mipushpxl.c new file mode 100644 index 000000000..24ee8bbe3 --- /dev/null +++ b/mi/mipushpxl.c @@ -0,0 +1,197 @@ +/*********************************************************** + +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: mipushpxl.c,v 1.4 2001/02/09 02:05:21 xorgcvs Exp $ */ +#include "X.h" +#include "gcstruct.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "miscstruct.h" +#include "../mfb/maskbits.h" + +#define NPT 128 + +/* miPushPixels -- squeegees the fill style of pGC through pBitMap + * into pDrawable. pBitMap is a stencil (dx by dy of it is used, it may + * be bigger) which is placed on the drawable at xOrg, yOrg. Where a 1 bit + * is set in the bitmap, the fill style is put onto the drawable using + * the GC's logical function. The drawable is not changed where the bitmap + * has a zero bit or outside the area covered by the stencil. + +WARNING: + this code works if the 1-bit deep pixmap format returned by GetSpans +is the same as the format defined by the mfb code (i.e. 32-bit padding +per scanline, scanline unit = 32 bits; later, this might mean +bitsizeof(int) padding and sacnline unit == bitsizeof(int).) + + */ +void +miPushPixels(pGC, pBitMap, pDrawable, dx, dy, xOrg, yOrg) + GCPtr pGC; + PixmapPtr pBitMap; + DrawablePtr pDrawable; + int dx, dy, xOrg, yOrg; +{ + int h, dxDiv32, ibEnd; + unsigned long *pwLineStart; + register unsigned long *pw, *pwEnd; + register unsigned long msk; + register int ib, w; + register int ipt; /* index into above arrays */ + Bool fInBox; + DDXPointRec pt[NPT], ptThisLine; + int width[NPT]; + + pwLineStart = (unsigned long *)xalloc(BitmapBytePad(dx)); + if (!pwLineStart) + return; + ipt = 0; + dxDiv32 = dx/32; + + for(h = 0, ptThisLine.x = 0, ptThisLine.y = 0; + h < dy; + h++, ptThisLine.y++) + { + + (*pBitMap->drawable.pScreen->GetSpans)((DrawablePtr)pBitMap, dx, + &ptThisLine, &dx, 1, (char *)pwLineStart); + + pw = pwLineStart; + /* Process all words which are fully in the pixmap */ + + fInBox = FALSE; + pwEnd = pwLineStart + dxDiv32; + while(pw < pwEnd) + { + w = *pw; + msk = endtab[1]; + for(ib = 0; ib < 32; ib++) + { + if(w & msk) + { + if(!fInBox) + { + pt[ipt].x = ((pw - pwLineStart) << 5) + ib + xOrg; + pt[ipt].y = h + yOrg; + /* start new box */ + fInBox = TRUE; + } + } + else + { + if(fInBox) + { + width[ipt] = ((pw - pwLineStart) << 5) + + ib + xOrg - pt[ipt].x; + if (++ipt >= NPT) + { + (*pGC->ops->FillSpans)(pDrawable, pGC, + NPT, pt, width, TRUE); + ipt = 0; + } + /* end box */ + fInBox = FALSE; + } + } + msk = SCRRIGHT(msk, 1); + } + pw++; + } + ibEnd = dx & 0x1F; + if(ibEnd) + { + /* Process final partial word on line */ + w = *pw; + msk = endtab[1]; + for(ib = 0; ib < ibEnd; ib++) + { + if(w & msk) + { + if(!fInBox) + { + /* start new box */ + pt[ipt].x = ((pw - pwLineStart) << 5) + ib + xOrg; + pt[ipt].y = h + yOrg; + fInBox = TRUE; + } + } + else + { + if(fInBox) + { + /* end box */ + width[ipt] = ((pw - pwLineStart) << 5) + + ib + xOrg - pt[ipt].x; + if (++ipt >= NPT) + { + (*pGC->ops->FillSpans)(pDrawable, + pGC, NPT, pt, width, TRUE); + ipt = 0; + } + fInBox = FALSE; + } + } + msk = SCRRIGHT(msk, 1); + } + } + /* If scanline ended with last bit set, end the box */ + if(fInBox) + { + width[ipt] = dx + xOrg - pt[ipt].x; + if (++ipt >= NPT) + { + (*pGC->ops->FillSpans)(pDrawable, pGC, NPT, pt, width, TRUE); + ipt = 0; + } + } + } + xfree(pwLineStart); + /* Flush any remaining spans */ + if (ipt) + { + (*pGC->ops->FillSpans)(pDrawable, pGC, ipt, pt, width, TRUE); + } +} |