389 lines
9.8 KiB
C
389 lines
9.8 KiB
C
/* $XFree86: xc/programs/Xserver/iplan2p4/iplbitblt.c,v 3.1tsi Exp $ */
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/*
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* ipl copy area
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*/
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/*
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Copyright (c) 1989 X Consortium
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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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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X CONSORTIUM 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 X Consortium 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 X Consortium.
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Author: Keith Packard
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*/
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/* $XConsortium: iplbitblt.c,v 5.51 94/05/27 11:00:56 dpw Exp $ */
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/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
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interleaved planes */
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include <X11/Xproto.h>
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "regionstr.h"
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#include "ipl.h"
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#include "fastblt.h"
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#define MFB_CONSTS_ONLY
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#include "maskbits.h"
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#include "iplmskbits.h"
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RegionPtr
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iplBitBlt (pSrcDrawable, pDstDrawable,
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pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane)
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register DrawablePtr pSrcDrawable;
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register DrawablePtr pDstDrawable;
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GC *pGC;
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int srcx, srcy;
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int width, height;
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int dstx, dsty;
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void (*doBitBlt)();
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unsigned long bitPlane;
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{
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RegionPtr prgnSrcClip; /* may be a new region, or just a copy */
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Bool freeSrcClip = FALSE;
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RegionPtr prgnExposed;
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RegionRec rgnDst;
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DDXPointPtr pptSrc;
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register DDXPointPtr ppt;
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register BoxPtr pbox;
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int i;
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register int dx;
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register int dy;
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xRectangle origSource;
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DDXPointRec origDest;
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int numRects;
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BoxRec fastBox;
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int fastClip = 0; /* for fast clipping with pixmap source */
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int fastExpose = 0; /* for fast exposures with pixmap source */
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origSource.x = srcx;
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origSource.y = srcy;
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origSource.width = width;
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origSource.height = height;
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origDest.x = dstx;
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origDest.y = dsty;
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if ((pSrcDrawable != pDstDrawable) &&
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pSrcDrawable->pScreen->SourceValidate)
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{
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(*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, srcx, srcy, width, height);
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}
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srcx += pSrcDrawable->x;
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srcy += pSrcDrawable->y;
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/* clip the source */
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if (pSrcDrawable->type == DRAWABLE_PIXMAP)
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{
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if ((pSrcDrawable == pDstDrawable) &&
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(pGC->clientClipType == CT_NONE))
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{
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prgnSrcClip = iplGetCompositeClip(pGC);
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}
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else
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{
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fastClip = 1;
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}
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}
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else
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{
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if (pGC->subWindowMode == IncludeInferiors)
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{
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if (!((WindowPtr) pSrcDrawable)->parent)
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{
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/*
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* special case bitblt from root window in
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* IncludeInferiors mode; just like from a pixmap
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*/
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fastClip = 1;
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}
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else if ((pSrcDrawable == pDstDrawable) &&
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(pGC->clientClipType == CT_NONE))
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{
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prgnSrcClip = iplGetCompositeClip(pGC);
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}
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else
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{
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prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
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freeSrcClip = TRUE;
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}
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}
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else
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{
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prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
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}
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}
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fastBox.x1 = srcx;
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fastBox.y1 = srcy;
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fastBox.x2 = srcx + width;
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fastBox.y2 = srcy + height;
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/* Don't create a source region if we are doing a fast clip */
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if (fastClip)
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{
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fastExpose = 1;
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/*
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* clip the source; if regions extend beyond the source size,
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* make sure exposure events get sent
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*/
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if (fastBox.x1 < pSrcDrawable->x)
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{
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fastBox.x1 = pSrcDrawable->x;
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fastExpose = 0;
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}
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if (fastBox.y1 < pSrcDrawable->y)
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{
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fastBox.y1 = pSrcDrawable->y;
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fastExpose = 0;
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}
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if (fastBox.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
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{
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fastBox.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
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fastExpose = 0;
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}
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if (fastBox.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
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{
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fastBox.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
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fastExpose = 0;
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}
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}
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else
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{
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
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}
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dstx += pDstDrawable->x;
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dsty += pDstDrawable->y;
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if (pDstDrawable->type == DRAWABLE_WINDOW)
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{
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if (!((WindowPtr)pDstDrawable)->realized)
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{
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if (!fastClip)
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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if (freeSrcClip)
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REGION_DESTROY(pGC->pScreen, prgnSrcClip);
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return NULL;
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}
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}
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dx = srcx - dstx;
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dy = srcy - dsty;
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/* Translate and clip the dst to the destination composite clip */
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if (fastClip)
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{
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RegionPtr cclip;
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/* Translate the region directly */
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fastBox.x1 -= dx;
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fastBox.x2 -= dx;
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fastBox.y1 -= dy;
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fastBox.y2 -= dy;
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/* If the destination composite clip is one rectangle we can
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do the clip directly. Otherwise we have to create a full
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blown region and call intersect */
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/* XXX because CopyPlane uses this routine for 8-to-1 bit
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* copies, this next line *must* also correctly fetch the
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* composite clip from an mfb gc
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*/
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cclip = iplGetCompositeClip(pGC);
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if (REGION_NUM_RECTS(cclip) == 1)
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{
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BoxPtr pBox = REGION_RECTS(cclip);
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if (fastBox.x1 < pBox->x1) fastBox.x1 = pBox->x1;
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if (fastBox.x2 > pBox->x2) fastBox.x2 = pBox->x2;
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if (fastBox.y1 < pBox->y1) fastBox.y1 = pBox->y1;
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if (fastBox.y2 > pBox->y2) fastBox.y2 = pBox->y2;
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/* Check to see if the region is empty */
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if (fastBox.x1 >= fastBox.x2 || fastBox.y1 >= fastBox.y2)
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{
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REGION_NULL(pGC->pScreen, &rgnDst);
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}
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else
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{
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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}
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}
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else
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{
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/* We must turn off fastClip now, since we must create
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a full blown region. It is intersected with the
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composite clip below. */
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fastClip = 0;
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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}
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}
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else
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{
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REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
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}
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if (!fastClip)
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{
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REGION_INTERSECT(pGC->pScreen, &rgnDst,
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&rgnDst,
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iplGetCompositeClip(pGC));
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}
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/* Do bit blitting */
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numRects = REGION_NUM_RECTS(&rgnDst);
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if (numRects && width && height)
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{
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if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
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sizeof(DDXPointRec))))
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{
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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if (freeSrcClip)
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REGION_DESTROY(pGC->pScreen, prgnSrcClip);
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return NULL;
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}
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pbox = REGION_RECTS(&rgnDst);
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ppt = pptSrc;
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for (i = numRects; --i >= 0; pbox++, ppt++)
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{
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ppt->x = pbox->x1 + dx;
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ppt->y = pbox->y1 + dy;
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}
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(*doBitBlt) (pSrcDrawable, pDstDrawable, pGC->alu, &rgnDst, pptSrc, pGC->planemask, bitPlane);
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DEALLOCATE_LOCAL(pptSrc);
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}
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prgnExposed = NULL;
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if (pGC->fExpose)
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{
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extern RegionPtr miHandleExposures();
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/* Pixmap sources generate a NoExposed (we return NULL to do this) */
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if (!fastExpose)
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prgnExposed =
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miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
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origSource.x, origSource.y,
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(int)origSource.width,
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(int)origSource.height,
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origDest.x, origDest.y, bitPlane);
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}
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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if (freeSrcClip)
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REGION_DESTROY(pGC->pScreen, prgnSrcClip);
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return prgnExposed;
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}
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void
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iplDoBitblt (pSrc, pDst, alu, prgnDst, pptSrc, planemask)
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DrawablePtr pSrc, pDst;
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int alu;
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RegionPtr prgnDst;
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DDXPointPtr pptSrc;
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unsigned long planemask;
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{
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void (*blt)() = iplDoBitbltGeneral;
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if ((planemask & INTER_PMSK) == INTER_PMSK) {
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switch (alu) {
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case GXcopy:
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blt = iplDoBitbltCopy;
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break;
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case GXxor:
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blt = iplDoBitbltXor;
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break;
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case GXor:
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blt = iplDoBitbltOr;
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break;
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}
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}
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(*blt) (pSrc, pDst, alu, prgnDst, pptSrc, planemask);
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}
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RegionPtr
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iplCopyArea(pSrcDrawable, pDstDrawable,
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pGC, srcx, srcy, width, height, dstx, dsty)
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register DrawablePtr pSrcDrawable;
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register DrawablePtr pDstDrawable;
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GC *pGC;
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int srcx, srcy;
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int width, height;
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int dstx, dsty;
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{
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void (*doBitBlt) ();
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doBitBlt = iplDoBitbltCopy;
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if (pGC->alu != GXcopy || (pGC->planemask & INTER_PMSK) != INTER_PMSK)
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{
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doBitBlt = iplDoBitbltGeneral;
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if ((pGC->planemask & INTER_PMSK) == INTER_PMSK)
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{
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switch (pGC->alu) {
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case GXxor:
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doBitBlt = iplDoBitbltXor;
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break;
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case GXor:
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doBitBlt = iplDoBitbltOr;
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break;
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}
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}
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}
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return iplBitBlt (pSrcDrawable, pDstDrawable,
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pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, 0L);
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}
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/* shared among all different ipl depths through linker magic */
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RegionPtr (*iplPuntCopyPlane)();
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RegionPtr iplCopyPlane(pSrcDrawable, pDstDrawable,
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pGC, srcx, srcy, width, height, dstx, dsty, bitPlane)
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DrawablePtr pSrcDrawable;
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DrawablePtr pDstDrawable;
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GCPtr pGC;
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int srcx, srcy;
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int width, height;
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int dstx, dsty;
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unsigned long bitPlane;
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{
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RegionPtr ret;
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extern RegionPtr miHandleExposures();
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void (*doBitBlt)();
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ret = (*iplPuntCopyPlane) (pSrcDrawable, pDstDrawable,
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pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
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return ret;
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}
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