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+/* $XFree86: xc/programs/Xserver/iplan2p4/iplbitblt.c,v 3.1 1998/03/20 21:08:08 hohndel Exp $ */
+/*
+ * ipl copy area
+ */
+
+/*
+
+Copyright (c) 1989 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.
+
+Author: Keith Packard
+
+*/
+/* $XConsortium: iplbitblt.c,v 5.51 94/05/27 11:00:56 dpw Exp $ */
+
+/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
+interleaved planes */
+
+#include "X.h"
+#include "Xmd.h"
+#include "Xproto.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "regionstr.h"
+#include "ipl.h"
+#include "fastblt.h"
+#define MFB_CONSTS_ONLY
+#include "maskbits.h"
+
+#include "iplmskbits.h"
+
+RegionPtr
+iplBitBlt (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, bitPlane)
+ register DrawablePtr pSrcDrawable;
+ register DrawablePtr pDstDrawable;
+ GC *pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+ void (*doBitBlt)();
+ unsigned long bitPlane;
+{
+ RegionPtr prgnSrcClip; /* may be a new region, or just a copy */
+ Bool freeSrcClip = FALSE;
+
+ RegionPtr prgnExposed;
+ RegionRec rgnDst;
+ DDXPointPtr pptSrc;
+ register DDXPointPtr ppt;
+ register BoxPtr pbox;
+ int i;
+ register int dx;
+ register int dy;
+ xRectangle origSource;
+ DDXPointRec origDest;
+ int numRects;
+ BoxRec fastBox;
+ int fastClip = 0; /* for fast clipping with pixmap source */
+ int fastExpose = 0; /* for fast exposures with pixmap source */
+
+ origSource.x = srcx;
+ origSource.y = srcy;
+ origSource.width = width;
+ origSource.height = height;
+ origDest.x = dstx;
+ origDest.y = dsty;
+
+ if ((pSrcDrawable != pDstDrawable) &&
+ pSrcDrawable->pScreen->SourceValidate)
+ {
+ (*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, srcx, srcy, width, height);
+ }
+
+ srcx += pSrcDrawable->x;
+ srcy += pSrcDrawable->y;
+
+ /* clip the source */
+
+ if (pSrcDrawable->type == DRAWABLE_PIXMAP)
+ {
+ if ((pSrcDrawable == pDstDrawable) &&
+ (pGC->clientClipType == CT_NONE))
+ {
+ prgnSrcClip = iplGetCompositeClip(pGC);
+ }
+ else
+ {
+ fastClip = 1;
+ }
+ }
+ else
+ {
+ if (pGC->subWindowMode == IncludeInferiors)
+ {
+ if (!((WindowPtr) pSrcDrawable)->parent)
+ {
+ /*
+ * special case bitblt from root window in
+ * IncludeInferiors mode; just like from a pixmap
+ */
+ fastClip = 1;
+ }
+ else if ((pSrcDrawable == pDstDrawable) &&
+ (pGC->clientClipType == CT_NONE))
+ {
+ prgnSrcClip = iplGetCompositeClip(pGC);
+ }
+ else
+ {
+ prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
+ freeSrcClip = TRUE;
+ }
+ }
+ else
+ {
+ prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
+ }
+ }
+
+ fastBox.x1 = srcx;
+ fastBox.y1 = srcy;
+ fastBox.x2 = srcx + width;
+ fastBox.y2 = srcy + height;
+
+ /* Don't create a source region if we are doing a fast clip */
+ if (fastClip)
+ {
+ fastExpose = 1;
+ /*
+ * clip the source; if regions extend beyond the source size,
+ * make sure exposure events get sent
+ */
+ if (fastBox.x1 < pSrcDrawable->x)
+ {
+ fastBox.x1 = pSrcDrawable->x;
+ fastExpose = 0;
+ }
+ if (fastBox.y1 < pSrcDrawable->y)
+ {
+ fastBox.y1 = pSrcDrawable->y;
+ fastExpose = 0;
+ }
+ if (fastBox.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
+ {
+ fastBox.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+ fastExpose = 0;
+ }
+ if (fastBox.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
+ {
+ fastBox.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+ fastExpose = 0;
+ }
+ }
+ else
+ {
+ REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+ REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
+ }
+
+ dstx += pDstDrawable->x;
+ dsty += pDstDrawable->y;
+
+ if (pDstDrawable->type == DRAWABLE_WINDOW)
+ {
+ if (!((WindowPtr)pDstDrawable)->realized)
+ {
+ if (!fastClip)
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ return NULL;
+ }
+ }
+
+ dx = srcx - dstx;
+ dy = srcy - dsty;
+
+ /* Translate and clip the dst to the destination composite clip */
+ if (fastClip)
+ {
+ RegionPtr cclip;
+
+ /* Translate the region directly */
+ fastBox.x1 -= dx;
+ fastBox.x2 -= dx;
+ fastBox.y1 -= dy;
+ fastBox.y2 -= dy;
+
+ /* If the destination composite clip is one rectangle we can
+ do the clip directly. Otherwise we have to create a full
+ blown region and call intersect */
+
+ /* XXX because CopyPlane uses this routine for 8-to-1 bit
+ * copies, this next line *must* also correctly fetch the
+ * composite clip from an mfb gc
+ */
+
+ cclip = iplGetCompositeClip(pGC);
+ if (REGION_NUM_RECTS(cclip) == 1)
+ {
+ BoxPtr pBox = REGION_RECTS(cclip);
+
+ if (fastBox.x1 < pBox->x1) fastBox.x1 = pBox->x1;
+ if (fastBox.x2 > pBox->x2) fastBox.x2 = pBox->x2;
+ if (fastBox.y1 < pBox->y1) fastBox.y1 = pBox->y1;
+ if (fastBox.y2 > pBox->y2) fastBox.y2 = pBox->y2;
+
+ /* Check to see if the region is empty */
+ if (fastBox.x1 >= fastBox.x2 || fastBox.y1 >= fastBox.y2)
+ {
+ REGION_INIT(pGC->pScreen, &rgnDst, NullBox, 0);
+ }
+ else
+ {
+ REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
+ }
+ }
+ else
+ {
+ /* We must turn off fastClip now, since we must create
+ a full blown region. It is intersected with the
+ composite clip below. */
+ fastClip = 0;
+ REGION_INIT(pGC->pScreen, &rgnDst, &fastBox,1);
+ }
+ }
+ else
+ {
+ REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
+ }
+
+ if (!fastClip)
+ {
+ REGION_INTERSECT(pGC->pScreen, &rgnDst,
+ &rgnDst,
+ iplGetCompositeClip(pGC));
+ }
+
+ /* Do bit blitting */
+ numRects = REGION_NUM_RECTS(&rgnDst);
+ if (numRects && width && height)
+ {
+ if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
+ sizeof(DDXPointRec))))
+ {
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ return NULL;
+ }
+ pbox = REGION_RECTS(&rgnDst);
+ ppt = pptSrc;
+ for (i = numRects; --i >= 0; pbox++, ppt++)
+ {
+ ppt->x = pbox->x1 + dx;
+ ppt->y = pbox->y1 + dy;
+ }
+
+ (*doBitBlt) (pSrcDrawable, pDstDrawable, pGC->alu, &rgnDst, pptSrc, pGC->planemask, bitPlane);
+ DEALLOCATE_LOCAL(pptSrc);
+ }
+
+ prgnExposed = NULL;
+ if (pGC->fExpose)
+ {
+ extern RegionPtr miHandleExposures();
+
+ /* Pixmap sources generate a NoExposed (we return NULL to do this) */
+ if (!fastExpose)
+ prgnExposed =
+ miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
+ origSource.x, origSource.y,
+ (int)origSource.width,
+ (int)origSource.height,
+ origDest.x, origDest.y, bitPlane);
+ }
+ REGION_UNINIT(pGC->pScreen, &rgnDst);
+ if (freeSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+ return prgnExposed;
+}
+
+
+void
+iplDoBitblt (pSrc, pDst, alu, prgnDst, pptSrc, planemask)
+ DrawablePtr pSrc, pDst;
+ int alu;
+ RegionPtr prgnDst;
+ DDXPointPtr pptSrc;
+ unsigned long planemask;
+{
+ void (*blt)() = iplDoBitbltGeneral;
+ if ((planemask & INTER_PMSK) == INTER_PMSK) {
+ switch (alu) {
+ case GXcopy:
+ blt = iplDoBitbltCopy;
+ break;
+ case GXxor:
+ blt = iplDoBitbltXor;
+ break;
+ case GXor:
+ blt = iplDoBitbltOr;
+ break;
+ }
+ }
+ (*blt) (pSrc, pDst, alu, prgnDst, pptSrc, planemask);
+}
+
+RegionPtr
+iplCopyArea(pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty)
+ register DrawablePtr pSrcDrawable;
+ register DrawablePtr pDstDrawable;
+ GC *pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+{
+ void (*doBitBlt) ();
+
+ doBitBlt = iplDoBitbltCopy;
+ if (pGC->alu != GXcopy || (pGC->planemask & INTER_PMSK) != INTER_PMSK)
+ {
+ doBitBlt = iplDoBitbltGeneral;
+ if ((pGC->planemask & INTER_PMSK) == INTER_PMSK)
+ {
+ switch (pGC->alu) {
+ case GXxor:
+ doBitBlt = iplDoBitbltXor;
+ break;
+ case GXor:
+ doBitBlt = iplDoBitbltOr;
+ break;
+ }
+ }
+ }
+ return iplBitBlt (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, doBitBlt, 0L);
+}
+
+/* shared among all different ipl depths through linker magic */
+RegionPtr (*iplPuntCopyPlane)();
+
+RegionPtr iplCopyPlane(pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, bitPlane)
+ DrawablePtr pSrcDrawable;
+ DrawablePtr pDstDrawable;
+ GCPtr pGC;
+ int srcx, srcy;
+ int width, height;
+ int dstx, dsty;
+ unsigned long bitPlane;
+{
+ RegionPtr ret;
+ extern RegionPtr miHandleExposures();
+ void (*doBitBlt)();
+
+ ret = (*iplPuntCopyPlane) (pSrcDrawable, pDstDrawable,
+ pGC, srcx, srcy, width, height, dstx, dsty, bitPlane);
+ return ret;
+}