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-rw-r--r--xorg-server/mi/mibitblt.c1661
1 files changed, 830 insertions, 831 deletions
diff --git a/xorg-server/mi/mibitblt.c b/xorg-server/mi/mibitblt.c
index cc8b11d9c..b1e188d5a 100644
--- a/xorg-server/mi/mibitblt.c
+++ b/xorg-server/mi/mibitblt.c
@@ -1,831 +1,830 @@
-/***********************************************************
-
-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.
-
-******************************************************************/
-/* Author: Todd Newman (aided and abetted by Mr. Drewry) */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/Xprotostr.h>
-
-#include "misc.h"
-#include "gcstruct.h"
-#include "pixmapstr.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "mi.h"
-#include "regionstr.h"
-#include <X11/Xmd.h>
-#include "servermd.h"
-
-#ifndef HAS_FFS
-extern int ffs(int);
-#endif
-
-/* MICOPYAREA -- public entry for the CopyArea request
- * For each rectangle in the source region
- * get the pixels with GetSpans
- * set them in the destination with SetSpans
- * We let SetSpans worry about clipping to the destination.
- */
-RegionPtr
-miCopyArea(DrawablePtr pSrcDrawable,
- DrawablePtr pDstDrawable,
- GCPtr pGC,
- int xIn,
- int yIn,
- int widthSrc,
- int heightSrc,
- int xOut,
- int yOut)
-{
- DDXPointPtr ppt, pptFirst;
- unsigned int *pwidthFirst, *pwidth, *pbits;
- BoxRec srcBox, *prect;
- /* may be a new region, or just a copy */
- RegionPtr prgnSrcClip;
- /* non-0 if we've created a src clip */
- RegionPtr prgnExposed;
- int realSrcClip = 0;
- int srcx, srcy, dstx, dsty, i, j, y, width, height,
- xMin, xMax, yMin, yMax;
- unsigned int *ordering;
- int numRects;
- BoxPtr boxes;
-
- srcx = xIn + pSrcDrawable->x;
- srcy = yIn + pSrcDrawable->y;
-
- /* If the destination isn't realized, this is easy */
- if (pDstDrawable->type == DRAWABLE_WINDOW &&
- !((WindowPtr)pDstDrawable)->realized)
- return NULL;
-
- /* clip the source */
- if (pSrcDrawable->type == DRAWABLE_PIXMAP)
- {
- BoxRec box;
-
- box.x1 = pSrcDrawable->x;
- box.y1 = pSrcDrawable->y;
- box.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
- box.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
-
- prgnSrcClip = REGION_CREATE(pGC->pScreen, &box, 1);
- realSrcClip = 1;
- }
- else
- {
- if (pGC->subWindowMode == IncludeInferiors) {
- prgnSrcClip = NotClippedByChildren ((WindowPtr) pSrcDrawable);
- realSrcClip = 1;
- } else
- prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
- }
-
- /* If the src drawable is a window, we need to translate the srcBox so
- * that we can compare it with the window's clip region later on. */
- srcBox.x1 = srcx;
- srcBox.y1 = srcy;
- srcBox.x2 = srcx + widthSrc;
- srcBox.y2 = srcy + heightSrc;
-
- dstx = xOut;
- dsty = yOut;
- if (pGC->miTranslate)
- {
- dstx += pDstDrawable->x;
- dsty += pDstDrawable->y;
- }
-
- pptFirst = ppt = xalloc(heightSrc * sizeof(DDXPointRec));
- pwidthFirst = pwidth = xalloc(heightSrc * sizeof(unsigned int));
- numRects = REGION_NUM_RECTS(prgnSrcClip);
- boxes = REGION_RECTS(prgnSrcClip);
- ordering = xalloc(numRects * sizeof(unsigned int));
- if(!pptFirst || !pwidthFirst || !ordering)
- {
- if (ordering)
- xfree(ordering);
- if (pwidthFirst)
- xfree(pwidthFirst);
- if (pptFirst)
- xfree(pptFirst);
- return NULL;
- }
-
- /* If not the same drawable then order of move doesn't matter.
- Following assumes that boxes are sorted from top
- to bottom and left to right.
- */
- if ((pSrcDrawable != pDstDrawable) &&
- ((pGC->subWindowMode != IncludeInferiors) ||
- (pSrcDrawable->type == DRAWABLE_PIXMAP) ||
- (pDstDrawable->type == DRAWABLE_PIXMAP)))
- for (i=0; i < numRects; i++)
- ordering[i] = i;
- else { /* within same drawable, must sequence moves carefully! */
- if (dsty <= srcBox.y1) { /* Scroll up or stationary vertical.
- Vertical order OK */
- if (dstx <= srcBox.x1) /* Scroll left or stationary horizontal.
- Horizontal order OK as well */
- for (i=0; i < numRects; i++)
- ordering[i] = i;
- else { /* scroll right. must reverse horizontal banding of rects. */
- for (i=0, j=1, xMax=0; i < numRects; j=i+1, xMax=i) {
- /* find extent of current horizontal band */
- y=boxes[i].y1; /* band has this y coordinate */
- while ((j < numRects) && (boxes[j].y1 == y))
- j++;
- /* reverse the horizontal band in the output ordering */
- for (j-- ; j >= xMax; j--, i++)
- ordering[i] = j;
- }
- }
- }
- else { /* Scroll down. Must reverse vertical banding. */
- if (dstx < srcBox.x1) { /* Scroll left. Horizontal order OK. */
- for (i=numRects-1, j=i-1, yMin=i, yMax=0;
- i >= 0;
- j=i-1, yMin=i) {
- /* find extent of current horizontal band */
- y=boxes[i].y1; /* band has this y coordinate */
- while ((j >= 0) && (boxes[j].y1 == y))
- j--;
- /* reverse the horizontal band in the output ordering */
- for (j++ ; j <= yMin; j++, i--, yMax++)
- ordering[yMax] = j;
- }
- }
- else /* Scroll right or horizontal stationary.
- Reverse horizontal order as well (if stationary, horizontal
- order can be swapped without penalty and this is faster
- to compute). */
- for (i=0, j=numRects-1; i < numRects; i++, j--)
- ordering[i] = j;
- }
- }
-
- for(i = 0; i < numRects; i++)
- {
- prect = &boxes[ordering[i]];
- xMin = max(prect->x1, srcBox.x1);
- xMax = min(prect->x2, srcBox.x2);
- yMin = max(prect->y1, srcBox.y1);
- yMax = min(prect->y2, srcBox.y2);
- /* is there anything visible here? */
- if(xMax <= xMin || yMax <= yMin)
- continue;
-
- ppt = pptFirst;
- pwidth = pwidthFirst;
- y = yMin;
- height = yMax - yMin;
- width = xMax - xMin;
-
- for(j = 0; j < height; j++)
- {
- /* We must untranslate before calling GetSpans */
- ppt->x = xMin;
- ppt++->y = y++;
- *pwidth++ = width;
- }
- pbits = xalloc(height * PixmapBytePad(width, pSrcDrawable->depth));
- if (pbits)
- {
- (*pSrcDrawable->pScreen->GetSpans)(pSrcDrawable, width, pptFirst,
- (int *)pwidthFirst, height, (char *)pbits);
- ppt = pptFirst;
- pwidth = pwidthFirst;
- xMin -= (srcx - dstx);
- y = yMin - (srcy - dsty);
- for(j = 0; j < height; j++)
- {
- ppt->x = xMin;
- ppt++->y = y++;
- *pwidth++ = width;
- }
-
- (*pGC->ops->SetSpans)(pDstDrawable, pGC, (char *)pbits, pptFirst,
- (int *)pwidthFirst, height, TRUE);
- xfree(pbits);
- }
- }
- prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
- widthSrc, heightSrc, xOut, yOut, (unsigned long)0);
- if(realSrcClip)
- REGION_DESTROY(pGC->pScreen, prgnSrcClip);
-
- xfree(ordering);
- xfree(pwidthFirst);
- xfree(pptFirst);
- return prgnExposed;
-}
-
-/* MIGETPLANE -- gets a bitmap representing one plane of pDraw
- * A helper used for CopyPlane and XY format GetImage
- * No clever strategy here, we grab a scanline at a time, pull out the
- * bits and then stuff them in a 1 bit deep map.
- */
-/*
- * This should be replaced with something more general. mi shouldn't have to
- * care about such things as scanline padding et alia.
- */
-static
-MiBits *
-miGetPlane(
- DrawablePtr pDraw,
- int planeNum, /* number of the bitPlane */
- int sx,
- int sy,
- int w,
- int h,
- MiBits *result)
-{
- int i, j, k, width, bitsPerPixel, widthInBytes;
- DDXPointRec pt = {0, 0};
- MiBits pixel;
- MiBits bit;
- unsigned char *pCharsOut = NULL;
-
-#if BITMAP_SCANLINE_UNIT == 8
-#define OUT_TYPE unsigned char
-#endif
-#if BITMAP_SCANLINE_UNIT == 16
-#define OUT_TYPE CARD16
-#endif
-#if BITMAP_SCANLINE_UNIT == 32
-#define OUT_TYPE CARD32
-#endif
-#if BITMAP_SCANLINE_UNIT == 64
-#define OUT_TYPE CARD64
-#endif
-
- OUT_TYPE *pOut;
- int delta = 0;
-
- sx += pDraw->x;
- sy += pDraw->y;
- widthInBytes = BitmapBytePad(w);
- if(!result)
- result = xcalloc(h, widthInBytes);
- if (!result)
- return NULL;
- bitsPerPixel = pDraw->bitsPerPixel;
- pOut = (OUT_TYPE *) result;
- if(bitsPerPixel == 1)
- {
- pCharsOut = (unsigned char *) result;
- width = w;
- }
- else
- {
- delta = (widthInBytes / (BITMAP_SCANLINE_UNIT / 8)) -
- (w / BITMAP_SCANLINE_UNIT);
- width = 1;
-#if IMAGE_BYTE_ORDER == MSBFirst
- planeNum += (32 - bitsPerPixel);
-#endif
- }
- pt.y = sy;
- for (i = h; --i >= 0; pt.y++)
- {
- pt.x = sx;
- if(bitsPerPixel == 1)
- {
- (*pDraw->pScreen->GetSpans)(pDraw, width, &pt, &width, 1,
- (char *)pCharsOut);
- pCharsOut += widthInBytes;
- }
- else
- {
- k = 0;
- for(j = w; --j >= 0; pt.x++)
- {
- /* Fetch the next pixel */
- (*pDraw->pScreen->GetSpans)(pDraw, width, &pt, &width, 1,
- (char *)&pixel);
- /*
- * Now get the bit and insert into a bitmap in XY format.
- */
- bit = (pixel >> planeNum) & 1;
-#if 0
- /* XXX assuming bit order == byte order */
-#if BITMAP_BIT_ORDER == LSBFirst
- bit <<= k;
-#else
- bit <<= ((BITMAP_SCANLINE_UNIT - 1) - k);
-#endif
-#else
- /* XXX assuming byte order == LSBFirst */
- if (screenInfo.bitmapBitOrder == LSBFirst)
- bit <<= k;
- else
- bit <<= ((screenInfo.bitmapScanlineUnit - 1) -
- (k % screenInfo.bitmapScanlineUnit)) +
- ((k / screenInfo.bitmapScanlineUnit) *
- screenInfo.bitmapScanlineUnit);
-#endif
- *pOut |= (OUT_TYPE) bit;
- k++;
- if (k == BITMAP_SCANLINE_UNIT)
- {
- pOut++;
- k = 0;
- }
- }
- pOut += delta;
- }
- }
- return(result);
-
-}
-
-/* MIOPQSTIPDRAWABLE -- use pbits as an opaque stipple for pDraw.
- * Drawing through the clip mask we SetSpans() the bits into a
- * bitmap and stipple those bits onto the destination drawable by doing a
- * PolyFillRect over the whole drawable,
- * then we invert the bitmap by copying it onto itself with an alu of
- * GXinvert, invert the foreground/background colors of the gc, and draw
- * the background bits.
- * Note how the clipped out bits of the bitmap are always the background
- * color so that the stipple never causes FillRect to draw them.
- */
-static void
-miOpqStipDrawable(DrawablePtr pDraw, GCPtr pGC, RegionPtr prgnSrc,
- MiBits *pbits, int srcx, int w, int h, int dstx, int dsty)
-{
- int oldfill, i;
- unsigned long oldfg;
- int *pwidth, *pwidthFirst;
- ChangeGCVal gcv[6];
- PixmapPtr pStipple, pPixmap;
- DDXPointRec oldOrg;
- GCPtr pGCT;
- DDXPointPtr ppt, pptFirst;
- xRectangle rect;
- RegionPtr prgnSrcClip;
-
- pPixmap = (*pDraw->pScreen->CreatePixmap)
- (pDraw->pScreen, w + srcx, h, 1,
- CREATE_PIXMAP_USAGE_SCRATCH);
- if (!pPixmap)
- return;
-
- /* Put the image into a 1 bit deep pixmap */
- pGCT = GetScratchGC(1, pDraw->pScreen);
- if (!pGCT)
- {
- (*pDraw->pScreen->DestroyPixmap)(pPixmap);
- return;
- }
- /* First set the whole pixmap to 0 */
- gcv[0].val = 0;
- dixChangeGC(NullClient, pGCT, GCBackground, NULL, gcv);
- ValidateGC((DrawablePtr)pPixmap, pGCT);
- miClearDrawable((DrawablePtr)pPixmap, pGCT);
- ppt = pptFirst = xalloc(h * sizeof(DDXPointRec));
- pwidth = pwidthFirst = xalloc(h * sizeof(int));
- if(!pptFirst || !pwidthFirst)
- {
- if (pwidthFirst) xfree(pwidthFirst);
- if (pptFirst) xfree(pptFirst);
- FreeScratchGC(pGCT);
- return;
- }
-
- /* we need a temporary region because ChangeClip must be assumed
- to destroy what it's sent. note that this means we don't
- have to free prgnSrcClip ourselves.
- */
- prgnSrcClip = REGION_CREATE(pGCT->pScreen, NULL, 0);
- REGION_COPY(pGCT->pScreen, prgnSrcClip, prgnSrc);
- REGION_TRANSLATE(pGCT->pScreen, prgnSrcClip, srcx, 0);
- (*pGCT->funcs->ChangeClip)(pGCT, CT_REGION, prgnSrcClip, 0);
- ValidateGC((DrawablePtr)pPixmap, pGCT);
-
- /* Since we know pDraw is always a pixmap, we never need to think
- * about translation here */
- for(i = 0; i < h; i++)
- {
- ppt->x = 0;
- ppt++->y = i;
- *pwidth++ = w + srcx;
- }
-
- (*pGCT->ops->SetSpans)((DrawablePtr)pPixmap, pGCT, (char *)pbits,
- pptFirst, pwidthFirst, h, TRUE);
- xfree(pwidthFirst);
- xfree(pptFirst);
-
-
- /* Save current values from the client GC */
- oldfill = pGC->fillStyle;
- pStipple = pGC->stipple;
- if(pStipple)
- pStipple->refcnt++;
- oldOrg = pGC->patOrg;
-
- /* Set a new stipple in the drawable */
- gcv[0].val = FillStippled;
- gcv[1].ptr = pPixmap;
- gcv[2].val = dstx - srcx;
- gcv[3].val = dsty;
-
- dixChangeGC(NullClient, pGC,
- GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin,
- NULL, gcv);
- ValidateGC(pDraw, pGC);
-
- /* Fill the drawable with the stipple. This will draw the
- * foreground color whereever 1 bits are set, leaving everything
- * with 0 bits untouched. Note that the part outside the clip
- * region is all 0s. */
- rect.x = dstx;
- rect.y = dsty;
- rect.width = w;
- rect.height = h;
- (*pGC->ops->PolyFillRect)(pDraw, pGC, 1, &rect);
-
- /* Invert the tiling pixmap. This sets 0s for 1s and 1s for 0s, only
- * within the clipping region, the part outside is still all 0s */
- gcv[0].val = GXinvert;
- dixChangeGC(NullClient, pGCT, GCFunction, NULL, gcv);
- ValidateGC((DrawablePtr)pPixmap, pGCT);
- (*pGCT->ops->CopyArea)((DrawablePtr)pPixmap, (DrawablePtr)pPixmap,
- pGCT, 0, 0, w + srcx, h, 0, 0);
-
- /* Swap foreground and background colors on the GC for the drawable.
- * Now when we fill the drawable, we will fill in the "Background"
- * values */
- oldfg = pGC->fgPixel;
- gcv[0].val = pGC->bgPixel;
- gcv[1].val = oldfg;
- gcv[2].ptr = pPixmap;
- dixChangeGC(NullClient, pGC, GCForeground | GCBackground | GCStipple,
- NULL, gcv);
- ValidateGC(pDraw, pGC);
- /* PolyFillRect might have bashed the rectangle */
- rect.x = dstx;
- rect.y = dsty;
- rect.width = w;
- rect.height = h;
- (*pGC->ops->PolyFillRect)(pDraw, pGC, 1, &rect);
-
- /* Now put things back */
- if(pStipple)
- pStipple->refcnt--;
- gcv[0].val = oldfg;
- gcv[1].val = pGC->fgPixel;
- gcv[2].val = oldfill;
- gcv[3].ptr = pStipple;
- gcv[4].val = oldOrg.x;
- gcv[5].val = oldOrg.y;
- dixChangeGC(NullClient, pGC,
- GCForeground | GCBackground | GCFillStyle | GCStipple |
- GCTileStipXOrigin | GCTileStipYOrigin, NULL, gcv);
-
- ValidateGC(pDraw, pGC);
- /* put what we hope is a smaller clip region back in the scratch gc */
- (*pGCT->funcs->ChangeClip)(pGCT, CT_NONE, NULL, 0);
- FreeScratchGC(pGCT);
- (*pDraw->pScreen->DestroyPixmap)(pPixmap);
-
-}
-
-/* MICOPYPLANE -- public entry for the CopyPlane request.
- * strategy:
- * First build up a bitmap out of the bits requested
- * build a source clip
- * Use the bitmap we've built up as a Stipple for the destination
- */
-RegionPtr
-miCopyPlane( DrawablePtr pSrcDrawable,
- DrawablePtr pDstDrawable,
- GCPtr pGC,
- int srcx,
- int srcy,
- int width,
- int height,
- int dstx,
- int dsty,
- unsigned long bitPlane)
-{
- MiBits *ptile;
- BoxRec box;
- RegionPtr prgnSrc, prgnExposed;
-
- /* incorporate the source clip */
-
- box.x1 = srcx + pSrcDrawable->x;
- box.y1 = srcy + pSrcDrawable->y;
- box.x2 = box.x1 + width;
- box.y2 = box.y1 + height;
- /* clip to visible drawable */
- if (box.x1 < pSrcDrawable->x)
- box.x1 = pSrcDrawable->x;
- if (box.y1 < pSrcDrawable->y)
- box.y1 = pSrcDrawable->y;
- if (box.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
- box.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
- if (box.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
- box.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
- if (box.x1 > box.x2)
- box.x2 = box.x1;
- if (box.y1 > box.y2)
- box.y2 = box.y1;
- prgnSrc = REGION_CREATE(pGC->pScreen, &box, 1);
-
- if (pSrcDrawable->type != DRAWABLE_PIXMAP) {
- /* clip to visible drawable */
-
- if (pGC->subWindowMode == IncludeInferiors)
- {
- RegionPtr clipList = NotClippedByChildren ((WindowPtr) pSrcDrawable);
- REGION_INTERSECT(pGC->pScreen, prgnSrc, prgnSrc, clipList);
- REGION_DESTROY(pGC->pScreen, clipList);
- } else
- REGION_INTERSECT(pGC->pScreen, prgnSrc, prgnSrc,
- &((WindowPtr)pSrcDrawable)->clipList);
- }
-
- box = *REGION_EXTENTS(pGC->pScreen, prgnSrc);
- REGION_TRANSLATE(pGC->pScreen, prgnSrc, -box.x1, -box.y1);
-
- if ((box.x2 > box.x1) && (box.y2 > box.y1))
- {
- /* minimize the size of the data extracted */
- /* note that we convert the plane mask bitPlane into a plane number */
- box.x1 -= pSrcDrawable->x;
- box.x2 -= pSrcDrawable->x;
- box.y1 -= pSrcDrawable->y;
- box.y2 -= pSrcDrawable->y;
- ptile = miGetPlane(pSrcDrawable, ffs(bitPlane) - 1,
- box.x1, box.y1,
- box.x2 - box.x1, box.y2 - box.y1,
- (MiBits *) NULL);
- if (ptile)
- {
- miOpqStipDrawable(pDstDrawable, pGC, prgnSrc, ptile, 0,
- box.x2 - box.x1, box.y2 - box.y1,
- dstx + box.x1 - srcx, dsty + box.y1 - srcy);
- xfree(ptile);
- }
- }
- prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC, srcx, srcy,
- width, height, dstx, dsty, bitPlane);
- REGION_DESTROY(pGC->pScreen, prgnSrc);
- return prgnExposed;
-}
-
-/* MIGETIMAGE -- public entry for the GetImage Request
- * We're getting the image into a memory buffer. While we have to use GetSpans
- * to read a line from the device (since we don't know what that looks like),
- * we can just write into the destination buffer
- *
- * two different strategies are used, depending on whether we're getting the
- * image in Z format or XY format
- * Z format:
- * Line at a time, GetSpans a line into the destination buffer, then if the
- * planemask is not all ones, we do a SetSpans into a temporary buffer (to get
- * bits turned off) and then another GetSpans to get stuff back (because
- * pixmaps are opaque, and we are passed in the memory to write into). This is
- * pretty ugly and slow but works. Life is hard.
- * XY format:
- * get the single plane specified in planemask
- */
-void
-miGetImage( DrawablePtr pDraw, int sx, int sy, int w, int h,
- unsigned int format, unsigned long planeMask, char *pDst)
-{
- unsigned char depth;
- int i, linelength, width, srcx, srcy;
- DDXPointRec pt = {0, 0};
- XID gcv[2];
- PixmapPtr pPixmap = NULL;
- GCPtr pGC = NULL;
-
- depth = pDraw->depth;
- if(format == ZPixmap)
- {
- if ( (((1<<depth)-1)&planeMask) != (1<<depth)-1 )
- {
- xPoint pt;
-
- pGC = GetScratchGC(depth, pDraw->pScreen);
- if (!pGC)
- return;
- pPixmap = (*pDraw->pScreen->CreatePixmap)
- (pDraw->pScreen, w, 1, depth,
- CREATE_PIXMAP_USAGE_SCRATCH);
- if (!pPixmap)
- {
- FreeScratchGC(pGC);
- return;
- }
- /*
- * Clear the pixmap before doing anything else
- */
- ValidateGC((DrawablePtr)pPixmap, pGC);
- pt.x = pt.y = 0;
- width = w;
- (*pGC->ops->FillSpans)((DrawablePtr)pPixmap, pGC, 1, &pt, &width,
- TRUE);
-
- /* alu is already GXCopy */
- gcv[0] = (XID)planeMask;
- DoChangeGC(pGC, GCPlaneMask, gcv, 0);
- ValidateGC((DrawablePtr)pPixmap, pGC);
- }
-
- linelength = PixmapBytePad(w, depth);
- srcx = sx + pDraw->x;
- srcy = sy + pDraw->y;
- for(i = 0; i < h; i++)
- {
- pt.x = srcx;
- pt.y = srcy + i;
- width = w;
- (*pDraw->pScreen->GetSpans)(pDraw, w, &pt, &width, 1, pDst);
- if (pPixmap)
- {
- pt.x = 0;
- pt.y = 0;
- width = w;
- (*pGC->ops->SetSpans)((DrawablePtr)pPixmap, pGC, pDst,
- &pt, &width, 1, TRUE);
- (*pDraw->pScreen->GetSpans)((DrawablePtr)pPixmap, w, &pt,
- &width, 1, pDst);
- }
- pDst += linelength;
- }
- if (pPixmap)
- {
- (*pGC->pScreen->DestroyPixmap)(pPixmap);
- FreeScratchGC(pGC);
- }
- }
- else
- {
- (void) miGetPlane(pDraw, ffs(planeMask) - 1, sx, sy, w, h,
- (MiBits *)pDst);
- }
-}
-
-/* MIPUTIMAGE -- public entry for the PutImage request
- * Here we benefit from knowing the format of the bits pointed to by pImage,
- * even if we don't know how pDraw represents them.
- * Three different strategies are used depending on the format
- * XYBitmap Format:
- * we just use the Opaque Stipple helper function to cover the destination
- * Note that this covers all the planes of the drawable with the
- * foreground color (masked with the GC planemask) where there are 1 bits
- * and the background color (masked with the GC planemask) where there are
- * 0 bits
- * XYPixmap format:
- * what we're called with is a series of XYBitmaps, but we only want
- * each XYPixmap to update 1 plane, instead of updating all of them.
- * we set the foreground color to be all 1s and the background to all 0s
- * then for each plane, we set the plane mask to only effect that one
- * plane and recursive call ourself with the format set to XYBitmap
- * (This clever idea courtesy of RGD.)
- * ZPixmap format:
- * This part is simple, just call SetSpans
- */
-void
-miPutImage( DrawablePtr pDraw, GCPtr pGC, int depth,
- int x, int y, int w, int h,
- int leftPad, int format, char *pImage)
-{
- DDXPointPtr pptFirst, ppt;
- int *pwidthFirst, *pwidth;
- RegionPtr prgnSrc;
- BoxRec box;
- unsigned long oldFg, oldBg;
- XID gcv[3];
- unsigned long oldPlanemask;
- unsigned long i;
- long bytesPer;
-
- if (!w || !h)
- return;
- switch(format)
- {
- case XYBitmap:
-
- box.x1 = 0;
- box.y1 = 0;
- box.x2 = w;
- box.y2 = h;
- prgnSrc = REGION_CREATE(pGC->pScreen, &box, 1);
-
- miOpqStipDrawable(pDraw, pGC, prgnSrc, (MiBits *) pImage,
- leftPad, w, h, x, y);
- REGION_DESTROY(pGC->pScreen, prgnSrc);
- break;
-
- case XYPixmap:
- depth = pGC->depth;
- oldPlanemask = pGC->planemask;
- oldFg = pGC->fgPixel;
- oldBg = pGC->bgPixel;
- gcv[0] = (XID)~0;
- gcv[1] = (XID)0;
- DoChangeGC(pGC, GCForeground | GCBackground, gcv, 0);
- bytesPer = (long)h * BitmapBytePad(w + leftPad);
-
- for (i = 1 << (depth-1); i != 0; i >>= 1, pImage += bytesPer)
- {
- if (i & oldPlanemask)
- {
- gcv[0] = (XID)i;
- DoChangeGC(pGC, GCPlaneMask, gcv, 0);
- ValidateGC(pDraw, pGC);
- (*pGC->ops->PutImage)(pDraw, pGC, 1, x, y, w, h, leftPad,
- XYBitmap, (char *)pImage);
- }
- }
- gcv[0] = (XID)oldPlanemask;
- gcv[1] = (XID)oldFg;
- gcv[2] = (XID)oldBg;
- DoChangeGC(pGC, GCPlaneMask | GCForeground | GCBackground, gcv, 0);
- ValidateGC(pDraw, pGC);
- break;
-
- case ZPixmap:
- ppt = pptFirst = xalloc(h * sizeof(DDXPointRec));
- pwidth = pwidthFirst = xalloc(h * sizeof(int));
- if(!pptFirst || !pwidthFirst)
- {
- if (pwidthFirst)
- xfree(pwidthFirst);
- if (pptFirst)
- xfree(pptFirst);
- return;
- }
- if (pGC->miTranslate)
- {
- x += pDraw->x;
- y += pDraw->y;
- }
-
- for(i = 0; i < h; i++)
- {
- ppt->x = x;
- ppt->y = y + i;
- ppt++;
- *pwidth++ = w;
- }
-
- (*pGC->ops->SetSpans)(pDraw, pGC, (char *)pImage, pptFirst,
- pwidthFirst, h, TRUE);
- xfree(pwidthFirst);
- xfree(pptFirst);
- break;
- }
-}
+/***********************************************************
+
+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.
+
+******************************************************************/
+/* Author: Todd Newman (aided and abetted by Mr. Drewry) */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xprotostr.h>
+
+#include "misc.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "mi.h"
+#include "regionstr.h"
+#include <X11/Xmd.h>
+#include "servermd.h"
+
+#ifndef HAS_FFS
+extern int ffs(int);
+#endif
+
+/* MICOPYAREA -- public entry for the CopyArea request
+ * For each rectangle in the source region
+ * get the pixels with GetSpans
+ * set them in the destination with SetSpans
+ * We let SetSpans worry about clipping to the destination.
+ */
+RegionPtr
+miCopyArea(DrawablePtr pSrcDrawable,
+ DrawablePtr pDstDrawable,
+ GCPtr pGC,
+ int xIn,
+ int yIn,
+ int widthSrc,
+ int heightSrc,
+ int xOut,
+ int yOut)
+{
+ DDXPointPtr ppt, pptFirst;
+ unsigned int *pwidthFirst, *pwidth, *pbits;
+ BoxRec srcBox, *prect;
+ /* may be a new region, or just a copy */
+ RegionPtr prgnSrcClip;
+ /* non-0 if we've created a src clip */
+ RegionPtr prgnExposed;
+ int realSrcClip = 0;
+ int srcx, srcy, dstx, dsty, i, j, y, width, height,
+ xMin, xMax, yMin, yMax;
+ unsigned int *ordering;
+ int numRects;
+ BoxPtr boxes;
+
+ srcx = xIn + pSrcDrawable->x;
+ srcy = yIn + pSrcDrawable->y;
+
+ /* If the destination isn't realized, this is easy */
+ if (pDstDrawable->type == DRAWABLE_WINDOW &&
+ !((WindowPtr)pDstDrawable)->realized)
+ return NULL;
+
+ /* clip the source */
+ if (pSrcDrawable->type == DRAWABLE_PIXMAP)
+ {
+ BoxRec box;
+
+ box.x1 = pSrcDrawable->x;
+ box.y1 = pSrcDrawable->y;
+ box.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+ box.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+
+ prgnSrcClip = REGION_CREATE(pGC->pScreen, &box, 1);
+ realSrcClip = 1;
+ }
+ else
+ {
+ if (pGC->subWindowMode == IncludeInferiors) {
+ prgnSrcClip = NotClippedByChildren ((WindowPtr) pSrcDrawable);
+ realSrcClip = 1;
+ } else
+ prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
+ }
+
+ /* If the src drawable is a window, we need to translate the srcBox so
+ * that we can compare it with the window's clip region later on. */
+ srcBox.x1 = srcx;
+ srcBox.y1 = srcy;
+ srcBox.x2 = srcx + widthSrc;
+ srcBox.y2 = srcy + heightSrc;
+
+ dstx = xOut;
+ dsty = yOut;
+ if (pGC->miTranslate)
+ {
+ dstx += pDstDrawable->x;
+ dsty += pDstDrawable->y;
+ }
+
+ pptFirst = ppt = malloc(heightSrc * sizeof(DDXPointRec));
+ pwidthFirst = pwidth = malloc(heightSrc * sizeof(unsigned int));
+ numRects = REGION_NUM_RECTS(prgnSrcClip);
+ boxes = REGION_RECTS(prgnSrcClip);
+ ordering = malloc(numRects * sizeof(unsigned int));
+ if(!pptFirst || !pwidthFirst || !ordering)
+ {
+ if (ordering)
+ free(ordering);
+ if (pwidthFirst)
+ free(pwidthFirst);
+ if (pptFirst)
+ free(pptFirst);
+ return NULL;
+ }
+
+ /* If not the same drawable then order of move doesn't matter.
+ Following assumes that boxes are sorted from top
+ to bottom and left to right.
+ */
+ if ((pSrcDrawable != pDstDrawable) &&
+ ((pGC->subWindowMode != IncludeInferiors) ||
+ (pSrcDrawable->type == DRAWABLE_PIXMAP) ||
+ (pDstDrawable->type == DRAWABLE_PIXMAP)))
+ for (i=0; i < numRects; i++)
+ ordering[i] = i;
+ else { /* within same drawable, must sequence moves carefully! */
+ if (dsty <= srcBox.y1) { /* Scroll up or stationary vertical.
+ Vertical order OK */
+ if (dstx <= srcBox.x1) /* Scroll left or stationary horizontal.
+ Horizontal order OK as well */
+ for (i=0; i < numRects; i++)
+ ordering[i] = i;
+ else { /* scroll right. must reverse horizontal banding of rects. */
+ for (i=0, j=1, xMax=0; i < numRects; j=i+1, xMax=i) {
+ /* find extent of current horizontal band */
+ y=boxes[i].y1; /* band has this y coordinate */
+ while ((j < numRects) && (boxes[j].y1 == y))
+ j++;
+ /* reverse the horizontal band in the output ordering */
+ for (j-- ; j >= xMax; j--, i++)
+ ordering[i] = j;
+ }
+ }
+ }
+ else { /* Scroll down. Must reverse vertical banding. */
+ if (dstx < srcBox.x1) { /* Scroll left. Horizontal order OK. */
+ for (i=numRects-1, j=i-1, yMin=i, yMax=0;
+ i >= 0;
+ j=i-1, yMin=i) {
+ /* find extent of current horizontal band */
+ y=boxes[i].y1; /* band has this y coordinate */
+ while ((j >= 0) && (boxes[j].y1 == y))
+ j--;
+ /* reverse the horizontal band in the output ordering */
+ for (j++ ; j <= yMin; j++, i--, yMax++)
+ ordering[yMax] = j;
+ }
+ }
+ else /* Scroll right or horizontal stationary.
+ Reverse horizontal order as well (if stationary, horizontal
+ order can be swapped without penalty and this is faster
+ to compute). */
+ for (i=0, j=numRects-1; i < numRects; i++, j--)
+ ordering[i] = j;
+ }
+ }
+
+ for(i = 0; i < numRects; i++)
+ {
+ prect = &boxes[ordering[i]];
+ xMin = max(prect->x1, srcBox.x1);
+ xMax = min(prect->x2, srcBox.x2);
+ yMin = max(prect->y1, srcBox.y1);
+ yMax = min(prect->y2, srcBox.y2);
+ /* is there anything visible here? */
+ if(xMax <= xMin || yMax <= yMin)
+ continue;
+
+ ppt = pptFirst;
+ pwidth = pwidthFirst;
+ y = yMin;
+ height = yMax - yMin;
+ width = xMax - xMin;
+
+ for(j = 0; j < height; j++)
+ {
+ /* We must untranslate before calling GetSpans */
+ ppt->x = xMin;
+ ppt++->y = y++;
+ *pwidth++ = width;
+ }
+ pbits = malloc(height * PixmapBytePad(width, pSrcDrawable->depth));
+ if (pbits)
+ {
+ (*pSrcDrawable->pScreen->GetSpans)(pSrcDrawable, width, pptFirst,
+ (int *)pwidthFirst, height, (char *)pbits);
+ ppt = pptFirst;
+ pwidth = pwidthFirst;
+ xMin -= (srcx - dstx);
+ y = yMin - (srcy - dsty);
+ for(j = 0; j < height; j++)
+ {
+ ppt->x = xMin;
+ ppt++->y = y++;
+ *pwidth++ = width;
+ }
+
+ (*pGC->ops->SetSpans)(pDstDrawable, pGC, (char *)pbits, pptFirst,
+ (int *)pwidthFirst, height, TRUE);
+ free(pbits);
+ }
+ }
+ prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
+ widthSrc, heightSrc, xOut, yOut, (unsigned long)0);
+ if(realSrcClip)
+ REGION_DESTROY(pGC->pScreen, prgnSrcClip);
+
+ free(ordering);
+ free(pwidthFirst);
+ free(pptFirst);
+ return prgnExposed;
+}
+
+/* MIGETPLANE -- gets a bitmap representing one plane of pDraw
+ * A helper used for CopyPlane and XY format GetImage
+ * No clever strategy here, we grab a scanline at a time, pull out the
+ * bits and then stuff them in a 1 bit deep map.
+ */
+/*
+ * This should be replaced with something more general. mi shouldn't have to
+ * care about such things as scanline padding et alia.
+ */
+static
+MiBits *
+miGetPlane(
+ DrawablePtr pDraw,
+ int planeNum, /* number of the bitPlane */
+ int sx,
+ int sy,
+ int w,
+ int h,
+ MiBits *result)
+{
+ int i, j, k, width, bitsPerPixel, widthInBytes;
+ DDXPointRec pt = {0, 0};
+ MiBits pixel;
+ MiBits bit;
+ unsigned char *pCharsOut = NULL;
+
+#if BITMAP_SCANLINE_UNIT == 8
+#define OUT_TYPE unsigned char
+#endif
+#if BITMAP_SCANLINE_UNIT == 16
+#define OUT_TYPE CARD16
+#endif
+#if BITMAP_SCANLINE_UNIT == 32
+#define OUT_TYPE CARD32
+#endif
+#if BITMAP_SCANLINE_UNIT == 64
+#define OUT_TYPE CARD64
+#endif
+
+ OUT_TYPE *pOut;
+ int delta = 0;
+
+ sx += pDraw->x;
+ sy += pDraw->y;
+ widthInBytes = BitmapBytePad(w);
+ if(!result)
+ result = calloc(h, widthInBytes);
+ if (!result)
+ return NULL;
+ bitsPerPixel = pDraw->bitsPerPixel;
+ pOut = (OUT_TYPE *) result;
+ if(bitsPerPixel == 1)
+ {
+ pCharsOut = (unsigned char *) result;
+ width = w;
+ }
+ else
+ {
+ delta = (widthInBytes / (BITMAP_SCANLINE_UNIT / 8)) -
+ (w / BITMAP_SCANLINE_UNIT);
+ width = 1;
+#if IMAGE_BYTE_ORDER == MSBFirst
+ planeNum += (32 - bitsPerPixel);
+#endif
+ }
+ pt.y = sy;
+ for (i = h; --i >= 0; pt.y++)
+ {
+ pt.x = sx;
+ if(bitsPerPixel == 1)
+ {
+ (*pDraw->pScreen->GetSpans)(pDraw, width, &pt, &width, 1,
+ (char *)pCharsOut);
+ pCharsOut += widthInBytes;
+ }
+ else
+ {
+ k = 0;
+ for(j = w; --j >= 0; pt.x++)
+ {
+ /* Fetch the next pixel */
+ (*pDraw->pScreen->GetSpans)(pDraw, width, &pt, &width, 1,
+ (char *)&pixel);
+ /*
+ * Now get the bit and insert into a bitmap in XY format.
+ */
+ bit = (pixel >> planeNum) & 1;
+#if 0
+ /* XXX assuming bit order == byte order */
+#if BITMAP_BIT_ORDER == LSBFirst
+ bit <<= k;
+#else
+ bit <<= ((BITMAP_SCANLINE_UNIT - 1) - k);
+#endif
+#else
+ /* XXX assuming byte order == LSBFirst */
+ if (screenInfo.bitmapBitOrder == LSBFirst)
+ bit <<= k;
+ else
+ bit <<= ((screenInfo.bitmapScanlineUnit - 1) -
+ (k % screenInfo.bitmapScanlineUnit)) +
+ ((k / screenInfo.bitmapScanlineUnit) *
+ screenInfo.bitmapScanlineUnit);
+#endif
+ *pOut |= (OUT_TYPE) bit;
+ k++;
+ if (k == BITMAP_SCANLINE_UNIT)
+ {
+ pOut++;
+ k = 0;
+ }
+ }
+ pOut += delta;
+ }
+ }
+ return(result);
+
+}
+
+/* MIOPQSTIPDRAWABLE -- use pbits as an opaque stipple for pDraw.
+ * Drawing through the clip mask we SetSpans() the bits into a
+ * bitmap and stipple those bits onto the destination drawable by doing a
+ * PolyFillRect over the whole drawable,
+ * then we invert the bitmap by copying it onto itself with an alu of
+ * GXinvert, invert the foreground/background colors of the gc, and draw
+ * the background bits.
+ * Note how the clipped out bits of the bitmap are always the background
+ * color so that the stipple never causes FillRect to draw them.
+ */
+static void
+miOpqStipDrawable(DrawablePtr pDraw, GCPtr pGC, RegionPtr prgnSrc,
+ MiBits *pbits, int srcx, int w, int h, int dstx, int dsty)
+{
+ int oldfill, i;
+ unsigned long oldfg;
+ int *pwidth, *pwidthFirst;
+ ChangeGCVal gcv[6];
+ PixmapPtr pStipple, pPixmap;
+ DDXPointRec oldOrg;
+ GCPtr pGCT;
+ DDXPointPtr ppt, pptFirst;
+ xRectangle rect;
+ RegionPtr prgnSrcClip;
+
+ pPixmap = (*pDraw->pScreen->CreatePixmap)
+ (pDraw->pScreen, w + srcx, h, 1,
+ CREATE_PIXMAP_USAGE_SCRATCH);
+ if (!pPixmap)
+ return;
+
+ /* Put the image into a 1 bit deep pixmap */
+ pGCT = GetScratchGC(1, pDraw->pScreen);
+ if (!pGCT)
+ {
+ (*pDraw->pScreen->DestroyPixmap)(pPixmap);
+ return;
+ }
+ /* First set the whole pixmap to 0 */
+ gcv[0].val = 0;
+ ChangeGC(NullClient, pGCT, GCBackground, gcv);
+ ValidateGC((DrawablePtr)pPixmap, pGCT);
+ miClearDrawable((DrawablePtr)pPixmap, pGCT);
+ ppt = pptFirst = malloc(h * sizeof(DDXPointRec));
+ pwidth = pwidthFirst = malloc(h * sizeof(int));
+ if(!pptFirst || !pwidthFirst)
+ {
+ if (pwidthFirst) free(pwidthFirst);
+ if (pptFirst) free(pptFirst);
+ FreeScratchGC(pGCT);
+ return;
+ }
+
+ /* we need a temporary region because ChangeClip must be assumed
+ to destroy what it's sent. note that this means we don't
+ have to free prgnSrcClip ourselves.
+ */
+ prgnSrcClip = REGION_CREATE(pGCT->pScreen, NULL, 0);
+ REGION_COPY(pGCT->pScreen, prgnSrcClip, prgnSrc);
+ REGION_TRANSLATE(pGCT->pScreen, prgnSrcClip, srcx, 0);
+ (*pGCT->funcs->ChangeClip)(pGCT, CT_REGION, prgnSrcClip, 0);
+ ValidateGC((DrawablePtr)pPixmap, pGCT);
+
+ /* Since we know pDraw is always a pixmap, we never need to think
+ * about translation here */
+ for(i = 0; i < h; i++)
+ {
+ ppt->x = 0;
+ ppt++->y = i;
+ *pwidth++ = w + srcx;
+ }
+
+ (*pGCT->ops->SetSpans)((DrawablePtr)pPixmap, pGCT, (char *)pbits,
+ pptFirst, pwidthFirst, h, TRUE);
+ free(pwidthFirst);
+ free(pptFirst);
+
+
+ /* Save current values from the client GC */
+ oldfill = pGC->fillStyle;
+ pStipple = pGC->stipple;
+ if(pStipple)
+ pStipple->refcnt++;
+ oldOrg = pGC->patOrg;
+
+ /* Set a new stipple in the drawable */
+ gcv[0].val = FillStippled;
+ gcv[1].ptr = pPixmap;
+ gcv[2].val = dstx - srcx;
+ gcv[3].val = dsty;
+
+ ChangeGC(NullClient, pGC,
+ GCFillStyle | GCStipple | GCTileStipXOrigin | GCTileStipYOrigin,
+ gcv);
+ ValidateGC(pDraw, pGC);
+
+ /* Fill the drawable with the stipple. This will draw the
+ * foreground color whereever 1 bits are set, leaving everything
+ * with 0 bits untouched. Note that the part outside the clip
+ * region is all 0s. */
+ rect.x = dstx;
+ rect.y = dsty;
+ rect.width = w;
+ rect.height = h;
+ (*pGC->ops->PolyFillRect)(pDraw, pGC, 1, &rect);
+
+ /* Invert the tiling pixmap. This sets 0s for 1s and 1s for 0s, only
+ * within the clipping region, the part outside is still all 0s */
+ gcv[0].val = GXinvert;
+ ChangeGC(NullClient, pGCT, GCFunction, gcv);
+ ValidateGC((DrawablePtr)pPixmap, pGCT);
+ (*pGCT->ops->CopyArea)((DrawablePtr)pPixmap, (DrawablePtr)pPixmap,
+ pGCT, 0, 0, w + srcx, h, 0, 0);
+
+ /* Swap foreground and background colors on the GC for the drawable.
+ * Now when we fill the drawable, we will fill in the "Background"
+ * values */
+ oldfg = pGC->fgPixel;
+ gcv[0].val = pGC->bgPixel;
+ gcv[1].val = oldfg;
+ gcv[2].ptr = pPixmap;
+ ChangeGC(NullClient, pGC, GCForeground | GCBackground | GCStipple, gcv);
+ ValidateGC(pDraw, pGC);
+ /* PolyFillRect might have bashed the rectangle */
+ rect.x = dstx;
+ rect.y = dsty;
+ rect.width = w;
+ rect.height = h;
+ (*pGC->ops->PolyFillRect)(pDraw, pGC, 1, &rect);
+
+ /* Now put things back */
+ if(pStipple)
+ pStipple->refcnt--;
+ gcv[0].val = oldfg;
+ gcv[1].val = pGC->fgPixel;
+ gcv[2].val = oldfill;
+ gcv[3].ptr = pStipple;
+ gcv[4].val = oldOrg.x;
+ gcv[5].val = oldOrg.y;
+ ChangeGC(NullClient, pGC,
+ GCForeground | GCBackground | GCFillStyle | GCStipple |
+ GCTileStipXOrigin | GCTileStipYOrigin, gcv);
+
+ ValidateGC(pDraw, pGC);
+ /* put what we hope is a smaller clip region back in the scratch gc */
+ (*pGCT->funcs->ChangeClip)(pGCT, CT_NONE, NULL, 0);
+ FreeScratchGC(pGCT);
+ (*pDraw->pScreen->DestroyPixmap)(pPixmap);
+
+}
+
+/* MICOPYPLANE -- public entry for the CopyPlane request.
+ * strategy:
+ * First build up a bitmap out of the bits requested
+ * build a source clip
+ * Use the bitmap we've built up as a Stipple for the destination
+ */
+RegionPtr
+miCopyPlane( DrawablePtr pSrcDrawable,
+ DrawablePtr pDstDrawable,
+ GCPtr pGC,
+ int srcx,
+ int srcy,
+ int width,
+ int height,
+ int dstx,
+ int dsty,
+ unsigned long bitPlane)
+{
+ MiBits *ptile;
+ BoxRec box;
+ RegionPtr prgnSrc, prgnExposed;
+
+ /* incorporate the source clip */
+
+ box.x1 = srcx + pSrcDrawable->x;
+ box.y1 = srcy + pSrcDrawable->y;
+ box.x2 = box.x1 + width;
+ box.y2 = box.y1 + height;
+ /* clip to visible drawable */
+ if (box.x1 < pSrcDrawable->x)
+ box.x1 = pSrcDrawable->x;
+ if (box.y1 < pSrcDrawable->y)
+ box.y1 = pSrcDrawable->y;
+ if (box.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
+ box.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
+ if (box.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
+ box.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
+ if (box.x1 > box.x2)
+ box.x2 = box.x1;
+ if (box.y1 > box.y2)
+ box.y2 = box.y1;
+ prgnSrc = REGION_CREATE(pGC->pScreen, &box, 1);
+
+ if (pSrcDrawable->type != DRAWABLE_PIXMAP) {
+ /* clip to visible drawable */
+
+ if (pGC->subWindowMode == IncludeInferiors)
+ {
+ RegionPtr clipList = NotClippedByChildren ((WindowPtr) pSrcDrawable);
+ REGION_INTERSECT(pGC->pScreen, prgnSrc, prgnSrc, clipList);
+ REGION_DESTROY(pGC->pScreen, clipList);
+ } else
+ REGION_INTERSECT(pGC->pScreen, prgnSrc, prgnSrc,
+ &((WindowPtr)pSrcDrawable)->clipList);
+ }
+
+ box = *REGION_EXTENTS(pGC->pScreen, prgnSrc);
+ REGION_TRANSLATE(pGC->pScreen, prgnSrc, -box.x1, -box.y1);
+
+ if ((box.x2 > box.x1) && (box.y2 > box.y1))
+ {
+ /* minimize the size of the data extracted */
+ /* note that we convert the plane mask bitPlane into a plane number */
+ box.x1 -= pSrcDrawable->x;
+ box.x2 -= pSrcDrawable->x;
+ box.y1 -= pSrcDrawable->y;
+ box.y2 -= pSrcDrawable->y;
+ ptile = miGetPlane(pSrcDrawable, ffs(bitPlane) - 1,
+ box.x1, box.y1,
+ box.x2 - box.x1, box.y2 - box.y1,
+ (MiBits *) NULL);
+ if (ptile)
+ {
+ miOpqStipDrawable(pDstDrawable, pGC, prgnSrc, ptile, 0,
+ box.x2 - box.x1, box.y2 - box.y1,
+ dstx + box.x1 - srcx, dsty + box.y1 - srcy);
+ free(ptile);
+ }
+ }
+ prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC, srcx, srcy,
+ width, height, dstx, dsty, bitPlane);
+ REGION_DESTROY(pGC->pScreen, prgnSrc);
+ return prgnExposed;
+}
+
+/* MIGETIMAGE -- public entry for the GetImage Request
+ * We're getting the image into a memory buffer. While we have to use GetSpans
+ * to read a line from the device (since we don't know what that looks like),
+ * we can just write into the destination buffer
+ *
+ * two different strategies are used, depending on whether we're getting the
+ * image in Z format or XY format
+ * Z format:
+ * Line at a time, GetSpans a line into the destination buffer, then if the
+ * planemask is not all ones, we do a SetSpans into a temporary buffer (to get
+ * bits turned off) and then another GetSpans to get stuff back (because
+ * pixmaps are opaque, and we are passed in the memory to write into). This is
+ * pretty ugly and slow but works. Life is hard.
+ * XY format:
+ * get the single plane specified in planemask
+ */
+void
+miGetImage( DrawablePtr pDraw, int sx, int sy, int w, int h,
+ unsigned int format, unsigned long planeMask, char *pDst)
+{
+ unsigned char depth;
+ int i, linelength, width, srcx, srcy;
+ DDXPointRec pt = {0, 0};
+ PixmapPtr pPixmap = NULL;
+ GCPtr pGC = NULL;
+
+ depth = pDraw->depth;
+ if(format == ZPixmap)
+ {
+ if ( (((1<<depth)-1)&planeMask) != (1<<depth)-1 )
+ {
+ ChangeGCVal gcv;
+ xPoint pt;
+
+ pGC = GetScratchGC(depth, pDraw->pScreen);
+ if (!pGC)
+ return;
+ pPixmap = (*pDraw->pScreen->CreatePixmap)
+ (pDraw->pScreen, w, 1, depth,
+ CREATE_PIXMAP_USAGE_SCRATCH);
+ if (!pPixmap)
+ {
+ FreeScratchGC(pGC);
+ return;
+ }
+ /*
+ * Clear the pixmap before doing anything else
+ */
+ ValidateGC((DrawablePtr)pPixmap, pGC);
+ pt.x = pt.y = 0;
+ width = w;
+ (*pGC->ops->FillSpans)((DrawablePtr)pPixmap, pGC, 1, &pt, &width,
+ TRUE);
+
+ /* alu is already GXCopy */
+ gcv.val = (XID)planeMask;
+ ChangeGC(NullClient, pGC, GCPlaneMask, &gcv);
+ ValidateGC((DrawablePtr)pPixmap, pGC);
+ }
+
+ linelength = PixmapBytePad(w, depth);
+ srcx = sx + pDraw->x;
+ srcy = sy + pDraw->y;
+ for(i = 0; i < h; i++)
+ {
+ pt.x = srcx;
+ pt.y = srcy + i;
+ width = w;
+ (*pDraw->pScreen->GetSpans)(pDraw, w, &pt, &width, 1, pDst);
+ if (pPixmap)
+ {
+ pt.x = 0;
+ pt.y = 0;
+ width = w;
+ (*pGC->ops->SetSpans)((DrawablePtr)pPixmap, pGC, pDst,
+ &pt, &width, 1, TRUE);
+ (*pDraw->pScreen->GetSpans)((DrawablePtr)pPixmap, w, &pt,
+ &width, 1, pDst);
+ }
+ pDst += linelength;
+ }
+ if (pPixmap)
+ {
+ (*pGC->pScreen->DestroyPixmap)(pPixmap);
+ FreeScratchGC(pGC);
+ }
+ }
+ else
+ {
+ (void) miGetPlane(pDraw, ffs(planeMask) - 1, sx, sy, w, h,
+ (MiBits *)pDst);
+ }
+}
+
+/* MIPUTIMAGE -- public entry for the PutImage request
+ * Here we benefit from knowing the format of the bits pointed to by pImage,
+ * even if we don't know how pDraw represents them.
+ * Three different strategies are used depending on the format
+ * XYBitmap Format:
+ * we just use the Opaque Stipple helper function to cover the destination
+ * Note that this covers all the planes of the drawable with the
+ * foreground color (masked with the GC planemask) where there are 1 bits
+ * and the background color (masked with the GC planemask) where there are
+ * 0 bits
+ * XYPixmap format:
+ * what we're called with is a series of XYBitmaps, but we only want
+ * each XYPixmap to update 1 plane, instead of updating all of them.
+ * we set the foreground color to be all 1s and the background to all 0s
+ * then for each plane, we set the plane mask to only effect that one
+ * plane and recursive call ourself with the format set to XYBitmap
+ * (This clever idea courtesy of RGD.)
+ * ZPixmap format:
+ * This part is simple, just call SetSpans
+ */
+void
+miPutImage( DrawablePtr pDraw, GCPtr pGC, int depth,
+ int x, int y, int w, int h,
+ int leftPad, int format, char *pImage)
+{
+ DDXPointPtr pptFirst, ppt;
+ int *pwidthFirst, *pwidth;
+ RegionPtr prgnSrc;
+ BoxRec box;
+ unsigned long oldFg, oldBg;
+ ChangeGCVal gcv[3];
+ unsigned long oldPlanemask;
+ unsigned long i;
+ long bytesPer;
+
+ if (!w || !h)
+ return;
+ switch(format)
+ {
+ case XYBitmap:
+
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = w;
+ box.y2 = h;
+ prgnSrc = REGION_CREATE(pGC->pScreen, &box, 1);
+
+ miOpqStipDrawable(pDraw, pGC, prgnSrc, (MiBits *) pImage,
+ leftPad, w, h, x, y);
+ REGION_DESTROY(pGC->pScreen, prgnSrc);
+ break;
+
+ case XYPixmap:
+ depth = pGC->depth;
+ oldPlanemask = pGC->planemask;
+ oldFg = pGC->fgPixel;
+ oldBg = pGC->bgPixel;
+ gcv[0].val = (XID)~0;
+ gcv[1].val = (XID)0;
+ ChangeGC(NullClient, pGC, GCForeground | GCBackground, gcv);
+ bytesPer = (long)h * BitmapBytePad(w + leftPad);
+
+ for (i = 1 << (depth-1); i != 0; i >>= 1, pImage += bytesPer)
+ {
+ if (i & oldPlanemask)
+ {
+ gcv[0].val = (XID)i;
+ ChangeGC(NullClient, pGC, GCPlaneMask, gcv);
+ ValidateGC(pDraw, pGC);
+ (*pGC->ops->PutImage)(pDraw, pGC, 1, x, y, w, h, leftPad,
+ XYBitmap, (char *)pImage);
+ }
+ }
+ gcv[0].val = (XID)oldPlanemask;
+ gcv[1].val = (XID)oldFg;
+ gcv[2].val = (XID)oldBg;
+ ChangeGC(NullClient, pGC, GCPlaneMask | GCForeground | GCBackground, gcv);
+ ValidateGC(pDraw, pGC);
+ break;
+
+ case ZPixmap:
+ ppt = pptFirst = malloc(h * sizeof(DDXPointRec));
+ pwidth = pwidthFirst = malloc(h * sizeof(int));
+ if(!pptFirst || !pwidthFirst)
+ {
+ if (pwidthFirst)
+ free(pwidthFirst);
+ if (pptFirst)
+ free(pptFirst);
+ return;
+ }
+ if (pGC->miTranslate)
+ {
+ x += pDraw->x;
+ y += pDraw->y;
+ }
+
+ for(i = 0; i < h; i++)
+ {
+ ppt->x = x;
+ ppt->y = y + i;
+ ppt++;
+ *pwidth++ = w;
+ }
+
+ (*pGC->ops->SetSpans)(pDraw, pGC, (char *)pImage, pptFirst,
+ pwidthFirst, h, TRUE);
+ free(pwidthFirst);
+ free(pptFirst);
+ break;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 22:15:52 +0000