344 lines
11 KiB
C
344 lines
11 KiB
C
/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
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/***********************************************************
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Copyright (c) 1987 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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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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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <stdlib.h>
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#include <X11/X.h>
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#include <X11/Xprotostr.h>
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#include "regionstr.h"
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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#include "mi.h"
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#include "afb.h"
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#include "maskbits.h"
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/* CopyArea and CopyPlane for a monchrome frame buffer
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clip the source rectangle to the source's available bits. (this
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avoids copying unnecessary pieces that will just get exposed anyway.)
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this becomes the new shape of the destination.
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clip the destination region to the composite clip in the
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GC. this requires translating the destination region to (dstx, dsty).
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build a list of source points, one for each rectangle in the
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destination. this is a simple translation.
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go do the multiple rectangle copies
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do graphics exposures
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*/
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/** Optimized for drawing pixmaps into windows, especially when drawing into
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** unobscured windows. Calls to the general-purpose region code were
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** replaced with rectangle-to-rectangle clipping comparisions. This is
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** possible, since the pixmap is a single rectangle. In an unobscured
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** window, the destination clip is also a single rectangle, and region
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** code can be avoided entirely. This is a big savings, since the region
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** code uses XAlloc() and makes many function calls.
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**
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** In addition, if source is a pixmap, there is no need to call the
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** expensive miHandleExposures() routine. Instead, we simply return NULL.
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**
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** Previously, drawing a pixmap into an unobscured window executed at least
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** 8 XAlloc()'s, 30 function calls, and hundreds of lines of code.
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**
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** Now, the same operation requires no XAlloc()'s, no region function calls,
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** and much less overhead. Nice for drawing lots of small pixmaps.
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*/
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void
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afbDoBitblt(DrawablePtr pSrc, DrawablePtr pDst, int alu, RegionPtr prgnDst, DDXPointPtr pptSrc, long unsigned int planemask)
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{
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switch (alu) {
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case GXcopy:
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afbDoBitbltCopy(pSrc, pDst, alu, prgnDst, pptSrc, planemask);
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break;
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case GXxor:
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afbDoBitbltXor(pSrc, pDst, alu, prgnDst, pptSrc, planemask);
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break;
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case GXcopyInverted:
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afbDoBitbltCopyInverted(pSrc, pDst, alu, prgnDst, pptSrc, planemask);
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break;
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case GXor:
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afbDoBitbltOr(pSrc, pDst, alu, prgnDst, pptSrc, planemask);
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break;
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default:
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afbDoBitbltGeneral(pSrc, pDst, alu, prgnDst, pptSrc, planemask);
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break;
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}
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}
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typedef void (*afb_blit_func)
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(DrawablePtr, DrawablePtr, int, RegionPtr, DDXPointPtr, unsigned long);
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static RegionPtr
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afbBitBlt(register DrawablePtr pSrcDrawable, register DrawablePtr pDstDrawable, register GC *pGC, int srcx, int srcy, int width, int height, int dstx, int dsty, afb_blit_func doBitBlt, long unsigned int planemask)
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{
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RegionPtr prgnSrcClip = NULL; /* 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) && pSrcDrawable->pScreen->SourceValidate)
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(*pSrcDrawable->pScreen->SourceValidate)(pSrcDrawable, srcx, srcy, width,
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height);
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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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if ((pSrcDrawable == pDstDrawable) && (pGC->clientClipType == CT_NONE))
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prgnSrcClip = pGC->pCompositeClip;
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else
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fastClip = 1;
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else if (pGC->subWindowMode == IncludeInferiors)
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if (!((WindowPtr)pSrcDrawable)->parent)
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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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else if ((pSrcDrawable == pDstDrawable) && (pGC->clientClipType == CT_NONE))
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prgnSrcClip = pGC->pCompositeClip;
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else {
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prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
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freeSrcClip = TRUE;
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}
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else
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prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
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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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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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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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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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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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fastBox.y2 = pSrcDrawable->y + (int)pSrcDrawable->height;
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fastExpose = 0;
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}
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} else {
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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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if (!((WindowPtr)pDstDrawable)->realized) {
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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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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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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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cclip = pGC->pCompositeClip;
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if (REGION_NUM_RECTS(cclip) == 1) {
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BoxPtr pBox = REGION_RECTS(cclip);
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if (fastBox.x1 < pBox->x1)
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fastBox.x1 = pBox->x1;
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if (fastBox.x2 > pBox->x2)
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fastBox.x2 = pBox->x2;
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if (fastBox.y1 < pBox->y1)
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fastBox.y1 = pBox->y1;
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if (fastBox.y2 > pBox->y2)
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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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REGION_NULL(pGC->pScreen, &rgnDst);
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} else {
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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}
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} else {
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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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} else
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REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
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if (!fastClip) {
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REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst,
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pGC->pCompositeClip);
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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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if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
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sizeof(DDXPointRec)))) {
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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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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,
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planemask);
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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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/* Pixmap sources generate a NoExposed (we return NULL to do this) */
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if (!fastExpose)
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prgnExposed = 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, origDest.x,
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origDest.y, (unsigned long)0);
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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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RegionPtr
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afbCopyArea(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable, GC *pGC, int srcx, int srcy, int width, int height, int dstx, int dsty)
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{
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afb_blit_func doBitBlt;
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switch (pGC->alu) {
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case GXcopy:
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doBitBlt = afbDoBitbltCopy;
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break;
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case GXxor:
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doBitBlt = afbDoBitbltXor;
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break;
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case GXcopyInverted:
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doBitBlt = afbDoBitbltCopyInverted;
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break;
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case GXor:
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doBitBlt = afbDoBitbltOr;
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break;
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default:
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doBitBlt = afbDoBitbltGeneral;
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break;
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}
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return(afbBitBlt(pSrcDrawable, pDstDrawable, pGC, srcx, srcy,
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width, height, dstx, dsty, doBitBlt, pGC->planemask));
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}
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