281 lines
7.4 KiB
C
281 lines
7.4 KiB
C
/***********************************************************
|
|
|
|
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.
|
|
|
|
******************************************************************/
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <X11/X.h>
|
|
#include "regionstr.h"
|
|
#include "pixmapstr.h"
|
|
#include "scrnintstr.h"
|
|
#include "regionstr.h"
|
|
#include "gc.h"
|
|
#include "maskbits.h"
|
|
#include "mi.h"
|
|
#include "mfb.h"
|
|
|
|
#define ADDRECT(reg,r,fr,rx1,ry1,rx2,ry2) \
|
|
if (((rx1) < (rx2)) && ((ry1) < (ry2)) && \
|
|
(!((reg)->data->numRects && \
|
|
((r-1)->y1 == (ry1)) && \
|
|
((r-1)->y2 == (ry2)) && \
|
|
((r-1)->x1 <= (rx1)) && \
|
|
((r-1)->x2 >= (rx2))))) \
|
|
{ \
|
|
if ((reg)->data->numRects == (reg)->data->size) \
|
|
{ \
|
|
miRectAlloc(reg, 1); \
|
|
fr = REGION_BOXPTR(reg); \
|
|
r = fr + (reg)->data->numRects; \
|
|
} \
|
|
r->x1 = (rx1); \
|
|
r->y1 = (ry1); \
|
|
r->x2 = (rx2); \
|
|
r->y2 = (ry2); \
|
|
(reg)->data->numRects++; \
|
|
if(r->x1 < (reg)->extents.x1) \
|
|
(reg)->extents.x1 = r->x1; \
|
|
if(r->x2 > (reg)->extents.x2) \
|
|
(reg)->extents.x2 = r->x2; \
|
|
r++; \
|
|
}
|
|
|
|
/* Convert bitmap clip mask into clipping region.
|
|
* First, goes through each line and makes boxes by noting the transitions
|
|
* from 0 to 1 and 1 to 0.
|
|
* Then it coalesces the current line with the previous if they have boxes
|
|
* at the same X coordinates.
|
|
*/
|
|
RegionPtr
|
|
mfbPixmapToRegion(pPix)
|
|
PixmapPtr pPix;
|
|
{
|
|
register RegionPtr pReg;
|
|
register PixelType *pw, w;
|
|
register int ib;
|
|
int width, h, base, rx1 = 0, crects;
|
|
PixelType *pwLineEnd;
|
|
int irectPrevStart, irectLineStart;
|
|
register BoxPtr prectO, prectN;
|
|
BoxPtr FirstRect, rects, prectLineStart;
|
|
Bool fInBox, fSame;
|
|
register PixelType mask0 = mask[0];
|
|
PixelType *pwLine;
|
|
int nWidth;
|
|
|
|
pReg = REGION_CREATE(pPix->drawable.pScreen, NULL, 1);
|
|
if(!pReg)
|
|
return NullRegion;
|
|
FirstRect = REGION_BOXPTR(pReg);
|
|
rects = FirstRect;
|
|
|
|
pwLine = (PixelType *) pPix->devPrivate.ptr;
|
|
nWidth = pPix->devKind / PGSZB;
|
|
|
|
width = pPix->drawable.width;
|
|
pReg->extents.x1 = width - 1;
|
|
pReg->extents.x2 = 0;
|
|
irectPrevStart = -1;
|
|
for(h = 0; h < pPix->drawable.height; h++)
|
|
{
|
|
pw = pwLine;
|
|
pwLine += nWidth;
|
|
irectLineStart = rects - FirstRect;
|
|
/* If the Screen left most bit of the word is set, we're starting in
|
|
* a box */
|
|
if(*pw & mask0)
|
|
{
|
|
fInBox = TRUE;
|
|
rx1 = 0;
|
|
}
|
|
else
|
|
fInBox = FALSE;
|
|
/* Process all words which are fully in the pixmap */
|
|
pwLineEnd = pw + (width >> PWSH);
|
|
for (base = 0; pw < pwLineEnd; base += PPW)
|
|
{
|
|
w = *pw++;
|
|
if (fInBox)
|
|
{
|
|
if (!~w)
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
if (!w)
|
|
continue;
|
|
}
|
|
for(ib = 0; ib < PPW; ib++)
|
|
{
|
|
/* If the Screen left most bit of the word is set, we're
|
|
* starting a box */
|
|
if(w & mask0)
|
|
{
|
|
if(!fInBox)
|
|
{
|
|
rx1 = base + ib;
|
|
/* start new box */
|
|
fInBox = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(fInBox)
|
|
{
|
|
/* end box */
|
|
ADDRECT(pReg, rects, FirstRect,
|
|
rx1, h, base + ib, h + 1);
|
|
fInBox = FALSE;
|
|
}
|
|
}
|
|
/* Shift the word VISUALLY left one. */
|
|
w = SCRLEFT(w, 1);
|
|
}
|
|
}
|
|
if(width & PIM)
|
|
{
|
|
/* Process final partial word on line */
|
|
w = *pw++;
|
|
for(ib = 0; ib < (width & PIM); ib++)
|
|
{
|
|
/* If the Screen left most bit of the word is set, we're
|
|
* starting a box */
|
|
if(w & mask0)
|
|
{
|
|
if(!fInBox)
|
|
{
|
|
rx1 = base + ib;
|
|
/* start new box */
|
|
fInBox = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(fInBox)
|
|
{
|
|
/* end box */
|
|
ADDRECT(pReg, rects, FirstRect,
|
|
rx1, h, base + ib, h + 1);
|
|
fInBox = FALSE;
|
|
}
|
|
}
|
|
/* Shift the word VISUALLY left one. */
|
|
w = SCRLEFT(w, 1);
|
|
}
|
|
}
|
|
/* If scanline ended with last bit set, end the box */
|
|
if(fInBox)
|
|
{
|
|
ADDRECT(pReg, rects, FirstRect,
|
|
rx1, h, base + (width & PIM), h + 1);
|
|
}
|
|
/* if all rectangles on this line have the same x-coords as
|
|
* those on the previous line, then add 1 to all the previous y2s and
|
|
* throw away all the rectangles from this line
|
|
*/
|
|
fSame = FALSE;
|
|
if(irectPrevStart != -1)
|
|
{
|
|
crects = irectLineStart - irectPrevStart;
|
|
if(crects == ((rects - FirstRect) - irectLineStart))
|
|
{
|
|
prectO = FirstRect + irectPrevStart;
|
|
prectN = prectLineStart = FirstRect + irectLineStart;
|
|
fSame = TRUE;
|
|
while(prectO < prectLineStart)
|
|
{
|
|
if((prectO->x1 != prectN->x1) || (prectO->x2 != prectN->x2))
|
|
{
|
|
fSame = FALSE;
|
|
break;
|
|
}
|
|
prectO++;
|
|
prectN++;
|
|
}
|
|
if (fSame)
|
|
{
|
|
prectO = FirstRect + irectPrevStart;
|
|
while(prectO < prectLineStart)
|
|
{
|
|
prectO->y2 += 1;
|
|
prectO++;
|
|
}
|
|
rects -= crects;
|
|
pReg->data->numRects -= crects;
|
|
}
|
|
}
|
|
}
|
|
if(!fSame)
|
|
irectPrevStart = irectLineStart;
|
|
}
|
|
if (!pReg->data->numRects)
|
|
pReg->extents.x1 = pReg->extents.x2 = 0;
|
|
else
|
|
{
|
|
pReg->extents.y1 = REGION_BOXPTR(pReg)->y1;
|
|
pReg->extents.y2 = REGION_END(pReg)->y2;
|
|
if (pReg->data->numRects == 1)
|
|
{
|
|
xfree(pReg->data);
|
|
pReg->data = (RegDataPtr)NULL;
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
if (!miValidRegion(pReg))
|
|
FatalError("Assertion failed file %s, line %d: expr\n", __FILE__, __LINE__);
|
|
#endif
|
|
return(pReg);
|
|
}
|
|
|
|
mfbPixmapToRegionProc *
|
|
mfbPixmapToRegionWeak(void)
|
|
{
|
|
return mfbPixmapToRegion;
|
|
}
|