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/*
*
* Copyright © 1998 Keith Packard
*
* 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, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <stdlib.h>
#include "fb.h"
void
fbCopyNtoN(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
BoxPtr pbox,
int nbox,
int dx,
int dy, Bool reverse, Bool upsidedown, Pixel bitplane, void *closure)
{
CARD8 alu = pGC ? pGC->alu : GXcopy;
FbBits pm = pGC ? fbGetGCPrivate(pGC)->pm : FB_ALLONES;
FbBits *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
FbBits *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
fbGetDrawable(pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
fbGetDrawable(pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
while (nbox--) {
fbBlt(src + (pbox->y1 + dy + srcYoff) * srcStride,
srcStride,
(pbox->x1 + dx + srcXoff) * srcBpp,
dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff) * dstBpp,
(pbox->x2 - pbox->x1) * dstBpp,
(pbox->y2 - pbox->y1), alu, pm, dstBpp, reverse, upsidedown);
pbox++;
}
}
void
fbCopy1toN(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
BoxPtr pbox,
int nbox,
int dx,
int dy, Bool reverse, Bool upsidedown, Pixel bitplane, void *closure)
{
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
FbBits *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
FbBits *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
fbGetDrawable(pSrcDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
fbGetDrawable(pDstDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
while (nbox--) {
if (dstBpp == 1) {
fbBlt(src + (pbox->y1 + dy + srcYoff) * srcStride,
srcStride,
(pbox->x1 + dx + srcXoff) * srcBpp,
dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff) * dstBpp,
(pbox->x2 - pbox->x1) * dstBpp,
(pbox->y2 - pbox->y1),
FbOpaqueStipple1Rop(pGC->alu,
pGC->fgPixel, pGC->bgPixel),
pPriv->pm, dstBpp, reverse, upsidedown);
}
else {
fbBltOne((FbStip *) (src + (pbox->y1 + dy + srcYoff) * srcStride),
srcStride * (FB_UNIT / FB_STIP_UNIT),
(pbox->x1 + dx + srcXoff),
dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff) * dstBpp,
dstBpp,
(pbox->x2 - pbox->x1) * dstBpp,
(pbox->y2 - pbox->y1),
pPriv->and, pPriv->xor, pPriv->bgand, pPriv->bgxor);
}
pbox++;
}
}
void
fbCopyNto1(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
BoxPtr pbox,
int nbox,
int dx,
int dy, Bool reverse, Bool upsidedown, Pixel bitplane, void *closure)
{
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
while (nbox--) {
if (pDstDrawable->bitsPerPixel == 1) {
FbBits *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
FbStip *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
fbGetDrawable(pSrcDrawable, src, srcStride, srcBpp, srcXoff,
srcYoff);
fbGetStipDrawable(pDstDrawable, dst, dstStride, dstBpp, dstXoff,
dstYoff);
fbBltPlane(src + (pbox->y1 + dy + srcYoff) * srcStride, srcStride,
(pbox->x1 + dx + srcXoff) * srcBpp, srcBpp,
dst + (pbox->y1 + dstYoff) * dstStride, dstStride,
(pbox->x1 + dstXoff) * dstBpp,
(pbox->x2 - pbox->x1) * srcBpp, (pbox->y2 - pbox->y1),
(FbStip) pPriv->and, (FbStip) pPriv->xor,
(FbStip) pPriv->bgand, (FbStip) pPriv->bgxor, bitplane);
}
else {
FbBits *src;
FbStride srcStride;
int srcBpp;
int srcXoff, srcYoff;
FbBits *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
FbStip *tmp;
FbStride tmpStride;
int width, height;
width = pbox->x2 - pbox->x1;
height = pbox->y2 - pbox->y1;
tmpStride = ((width + FB_STIP_MASK) >> FB_STIP_SHIFT);
tmp = malloc(tmpStride * height * sizeof(FbStip));
if (!tmp)
return;
fbGetDrawable(pSrcDrawable, src, srcStride, srcBpp, srcXoff,
srcYoff);
fbGetDrawable(pDstDrawable, dst, dstStride, dstBpp, dstXoff,
dstYoff);
fbBltPlane(src + (pbox->y1 + dy + srcYoff) * srcStride,
srcStride,
(pbox->x1 + dx + srcXoff) * srcBpp,
srcBpp,
tmp,
tmpStride,
0,
width * srcBpp,
height,
fbAndStip(GXcopy, FB_ALLONES, FB_ALLONES),
fbXorStip(GXcopy, FB_ALLONES, FB_ALLONES),
fbAndStip(GXcopy, 0, FB_ALLONES),
fbXorStip(GXcopy, 0, FB_ALLONES), bitplane);
fbBltOne(tmp,
tmpStride,
0,
dst + (pbox->y1 + dstYoff) * dstStride,
dstStride,
(pbox->x1 + dstXoff) * dstBpp,
dstBpp,
width * dstBpp,
height,
pPriv->and, pPriv->xor, pPriv->bgand, pPriv->bgxor);
free(tmp);
}
pbox++;
}
}
void
fbCopyRegion(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
RegionPtr pDstRegion,
int dx, int dy, fbCopyProc copyProc, Pixel bitPlane, void *closure)
{
int careful;
Bool reverse;
Bool upsidedown;
BoxPtr pbox;
int nbox;
BoxPtr pboxNew1, pboxNew2, pboxBase, pboxNext, pboxTmp;
pbox = REGION_RECTS(pDstRegion);
nbox = REGION_NUM_RECTS(pDstRegion);
/* XXX we have to err on the side of safety when both are windows,
* because we don't know if IncludeInferiors is being used.
*/
careful = ((pSrcDrawable == pDstDrawable) ||
((pSrcDrawable->type == DRAWABLE_WINDOW) &&
(pDstDrawable->type == DRAWABLE_WINDOW)));
pboxNew1 = NULL;
pboxNew2 = NULL;
if (careful && dy < 0) {
upsidedown = TRUE;
if (nbox > 1) {
/* keep ordering in each band, reverse order of bands */
pboxNew1 = (BoxPtr) ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
if (!pboxNew1)
return;
pboxBase = pboxNext = pbox + nbox - 1;
while (pboxBase >= pbox) {
while ((pboxNext >= pbox) && (pboxBase->y1 == pboxNext->y1))
pboxNext--;
pboxTmp = pboxNext + 1;
while (pboxTmp <= pboxBase) {
*pboxNew1++ = *pboxTmp++;
}
pboxBase = pboxNext;
}
pboxNew1 -= nbox;
pbox = pboxNew1;
}
}
else {
/* walk source top to bottom */
upsidedown = FALSE;
}
if (careful && dx < 0) {
/* walk source right to left */
if (dy <= 0)
reverse = TRUE;
else
reverse = FALSE;
if (nbox > 1) {
/* reverse order of rects in each band */
pboxNew2 = (BoxPtr) ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
if (!pboxNew2) {
if (pboxNew1)
DEALLOCATE_LOCAL(pboxNew1);
return;
}
pboxBase = pboxNext = pbox;
while (pboxBase < pbox + nbox) {
while ((pboxNext < pbox + nbox) &&
(pboxNext->y1 == pboxBase->y1))
pboxNext++;
pboxTmp = pboxNext;
while (pboxTmp != pboxBase) {
*pboxNew2++ = *--pboxTmp;
}
pboxBase = pboxNext;
}
pboxNew2 -= nbox;
pbox = pboxNew2;
}
}
else {
/* walk source left to right */
reverse = FALSE;
}
(*copyProc) (pSrcDrawable,
pDstDrawable,
pGC,
pbox, nbox, dx, dy, reverse, upsidedown, bitPlane, closure);
if (pboxNew1)
DEALLOCATE_LOCAL(pboxNew1);
if (pboxNew2)
DEALLOCATE_LOCAL(pboxNew2);
}
RegionPtr
fbDoCopy(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
int xIn,
int yIn,
int widthSrc,
int heightSrc,
int xOut, int yOut, fbCopyProc copyProc, Pixel bitPlane, void *closure)
{
RegionPtr prgnSrcClip = NULL; /* may be a new region, or just a copy */
Bool freeSrcClip = FALSE;
RegionPtr prgnExposed = NULL;
RegionRec rgnDst;
int dx;
int dy;
int numRects;
int box_x1;
int box_y1;
int box_x2;
int box_y2;
Bool fastSrc = FALSE; /* for fast clipping with pixmap source */
Bool fastDst = FALSE; /* for fast clipping with one rect dest */
Bool fastExpose = FALSE; /* for fast exposures with pixmap source */
/* Short cut for unmapped windows */
if (pDstDrawable->type == DRAWABLE_WINDOW &&
!((WindowPtr) pDstDrawable)->realized) {
return NULL;
}
if ((pSrcDrawable != pDstDrawable) && pSrcDrawable->pScreen->SourceValidate) {
(*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, xIn, yIn,
widthSrc, heightSrc);
}
/* Compute source clip region */
if (pSrcDrawable->type == DRAWABLE_PIXMAP) {
if ((pSrcDrawable == pDstDrawable) && (pGC->clientClipType == CT_NONE))
prgnSrcClip = fbGetCompositeClip(pGC);
else
fastSrc = TRUE;
}
else {
if (pGC->subWindowMode == IncludeInferiors) {
/*
* XFree86 DDX empties the border clip when the
* VT is inactive, make sure the region isn't empty
*/
if (!((WindowPtr) pSrcDrawable)->parent &&
REGION_NOTEMPTY(
&((WindowPtr) pSrcDrawable)->borderClip)) {
/*
* special case bitblt from root window in
* IncludeInferiors mode; just like from a pixmap
*/
fastSrc = TRUE;
}
else if ((pSrcDrawable == pDstDrawable) &&
(pGC->clientClipType == CT_NONE)) {
prgnSrcClip = fbGetCompositeClip(pGC);
}
else {
prgnSrcClip = NotClippedByChildren((WindowPtr) pSrcDrawable);
freeSrcClip = TRUE;
}
}
else {
prgnSrcClip = &((WindowPtr) pSrcDrawable)->clipList;
}
}
xIn += pSrcDrawable->x;
yIn += pSrcDrawable->y;
xOut += pDstDrawable->x;
yOut += pDstDrawable->y;
box_x1 = xIn;
box_y1 = yIn;
box_x2 = xIn + widthSrc;
box_y2 = yIn + heightSrc;
dx = xIn - xOut;
dy = yIn - yOut;
/* Don't create a source region if we are doing a fast clip */
if (fastSrc) {
RegionPtr cclip;
fastExpose = TRUE;
/*
* clip the source; if regions extend beyond the source size,
* make sure exposure events get sent
*/
if (box_x1 < pSrcDrawable->x) {
box_x1 = pSrcDrawable->x;
fastExpose = FALSE;
}
if (box_y1 < pSrcDrawable->y) {
box_y1 = pSrcDrawable->y;
fastExpose = FALSE;
}
if (box_x2 > pSrcDrawable->x + (int) pSrcDrawable->width) {
box_x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
fastExpose = FALSE;
}
if (box_y2 > pSrcDrawable->y + (int) pSrcDrawable->height) {
box_y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
fastExpose = FALSE;
}
/* Translate and clip the dst to the destination composite clip */
box_x1 -= dx;
box_x2 -= dx;
box_y1 -= dy;
box_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 */
cclip = fbGetCompositeClip(pGC);
if (REGION_NUM_RECTS(cclip) == 1) {
BoxPtr pBox = REGION_RECTS(cclip);
if (box_x1 < pBox->x1)
box_x1 = pBox->x1;
if (box_x2 > pBox->x2)
box_x2 = pBox->x2;
if (box_y1 < pBox->y1)
box_y1 = pBox->y1;
if (box_y2 > pBox->y2)
box_y2 = pBox->y2;
fastDst = TRUE;
}
}
/* Check to see if the region is empty */
if (box_x1 >= box_x2 || box_y1 >= box_y2) {
REGION_NULL(&rgnDst);
}
else {
BoxRec box;
box.x1 = box_x1;
box.y1 = box_y1;
box.x2 = box_x2;
box.y2 = box_y2;
REGION_INIT(&rgnDst, &box, 1);
}
/* Clip against complex source if needed */
if (!fastSrc) {
REGION_INTERSECT(&rgnDst, &rgnDst, prgnSrcClip);
REGION_TRANSLATE(&rgnDst, -dx, -dy);
}
/* Clip against complex dest if needed */
if (!fastDst) {
REGION_INTERSECT(&rgnDst, &rgnDst,
fbGetCompositeClip(pGC));
}
/* Do bit blitting */
numRects = REGION_NUM_RECTS(&rgnDst);
if (numRects && widthSrc && heightSrc)
fbCopyRegion(pSrcDrawable, pDstDrawable, pGC,
&rgnDst, dx, dy, copyProc, bitPlane, closure);
/* Pixmap sources generate a NoExposed (we return NULL to do this) */
if (!fastExpose && pGC->fExpose)
prgnExposed = miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
xIn - pSrcDrawable->x,
yIn - pSrcDrawable->y,
widthSrc, heightSrc,
xOut - pDstDrawable->x,
yOut - pDstDrawable->y,
(unsigned long) bitPlane);
REGION_UNINIT(&rgnDst);
if (freeSrcClip)
REGION_DESTROY(prgnSrcClip);
fbValidateDrawable(pDstDrawable);
return prgnExposed;
}
RegionPtr
fbCopyArea(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
int xIn, int yIn, int widthSrc, int heightSrc, int xOut, int yOut)
{
fbCopyProc copy;
if (pSrcDrawable->bitsPerPixel != pDstDrawable->bitsPerPixel)
copy = fb24_32CopyMtoN;
else
copy = fbCopyNtoN;
return fbDoCopy(pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
widthSrc, heightSrc, xOut, yOut, copy, 0, 0);
}
RegionPtr
fbCopyPlane(DrawablePtr pSrcDrawable,
DrawablePtr pDstDrawable,
GCPtr pGC,
int xIn,
int yIn,
int widthSrc,
int heightSrc, int xOut, int yOut, unsigned long bitplane)
{
if (pSrcDrawable->bitsPerPixel > 1)
return fbDoCopy(pSrcDrawable, pDstDrawable, pGC,
xIn, yIn, widthSrc, heightSrc,
xOut, yOut, fbCopyNto1, (Pixel) bitplane, 0);
else if (bitplane & 1)
return fbDoCopy(pSrcDrawable, pDstDrawable, pGC, xIn, yIn,
widthSrc, heightSrc, xOut, yOut, fbCopy1toN,
(Pixel) bitplane, 0);
else
return miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
xIn, yIn,
widthSrc, heightSrc, xOut, yOut, bitplane);
}