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/*
* Copyright © 1998 Keith Packard
* Copyright © 2012 Intel Corporation
*
* 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.
*/
#include "fb.h"
#include <X11/fonts/fontstruct.h>
#include <dixfontstr.h>
#define GLYPH fbGlyph8
#define BITS BYTE
#define BITS2 CARD16
#define BITS4 CARD32
#include "fbglyphbits.h"
#undef BITS
#undef BITS2
#undef BITS4
#undef GLYPH
#define GLYPH fbGlyph16
#define BITS CARD16
#define BITS2 CARD32
#include "fbglyphbits.h"
#undef BITS
#undef BITS2
#undef GLYPH
#define GLYPH fbGlyph32
#define BITS CARD32
#include "fbglyphbits.h"
#undef BITS
#undef GLYPH
static bool
fbGlyphIn(GCPtr gc, int x, int y, int width, int height)
{
BoxRec box;
BoxPtr extents = RegionExtents(gc->pCompositeClip);
/*
* Check extents by hand to avoid 16 bit overflows
*/
if (x < (int) extents->x1 || (int) extents->x2 < x + width)
return FALSE;
if (y < (int) extents->y1 || (int) extents->y2 < y + height)
return FALSE;
box.x1 = x;
box.x2 = x + width;
box.y1 = y;
box.y2 = y + height;
return RegionContainsRect(gc->pCompositeClip, &box) == rgnIN;
}
#define WRITE1(d,n,fg) WRITE((d) + (n), (CARD8) fg)
#define WRITE2(d,n,fg) WRITE((CARD16 *) &(d[n]), (CARD16) fg)
#define WRITE4(d,n,fg) WRITE((CARD32 *) &(d[n]), (CARD32) fg)
/*
* This is a bit tricky, but it's brief. Write 12 bytes worth
* of dest, which is four pixels, at a time. This gives constant
* code for each pattern as they're always aligned the same
*
* a b c d a b c d a b c d bytes
* A B C A B C A B C A B C pixels
*
* f0 f1 f2
* A B C A B C A B C A B C pixels LSB
* C A B C A B C A B C A B pixels MSB
*
* LSB MSB
* A f0 f1
* B f1 f2
* C f2 f0
* A B f0 f2
* B C f1 f0
* C A f2 f1
* A B C A f0 f1
* B C A B f1 f2
* C A B C f2 f0
*/
#undef _A
#undef _B
#undef _C
#undef _AB
#undef _BC
#undef _CA
#undef _ABCA
#undef _BCAB
#undef _CABC
#define _A f0
#define _B f1
#define _C f2
#define _AB f0
#define _BC f1
#define _CA f2
#define _ABCA f0
#define _BCAB f1
#define _CABC f2
#define CASE(a,b,c,d) (a | (b << 1) | (c << 2) | (d << 3))
void
fbPolyGlyphBlt(DrawablePtr drawable, GCPtr gc,
int x, int y,
unsigned int nglyph, CharInfoPtr * ppci, pointer glyphs)
{
FbGCPrivPtr pgc = fb_gc(gc);
CharInfoPtr pci;
unsigned char *pglyph; /* pointer bits in glyph */
int gx, gy;
int gWidth, gHeight; /* width and height of glyph */
FbStride gStride; /* stride of glyph */
void (*raster) (FbBits *, FbStride, int, FbStip *, FbBits, int, int);
FbBits *dst = 0;
FbStride dstStride = 0;
int dstBpp = 0;
int dstXoff = 0, dstYoff = 0;
DBG(("%s x %d\n", __FUNCTION__, nglyph));
raster = 0;
if (gc->fillStyle == FillSolid && pgc->and == 0) {
dstBpp = drawable->bitsPerPixel;
switch (dstBpp) {
case 8:
raster = fbGlyph8;
break;
case 16:
raster = fbGlyph16;
break;
case 32:
raster = fbGlyph32;
break;
}
}
x += drawable->x;
y += drawable->y;
while (nglyph--) {
pci = *ppci++;
pglyph = FONTGLYPHBITS(glyphs, pci);
gWidth = GLYPHWIDTHPIXELS(pci);
gHeight = GLYPHHEIGHTPIXELS(pci);
if (gWidth && gHeight) {
gx = x + pci->metrics.leftSideBearing;
gy = y - pci->metrics.ascent;
if (raster && gWidth <= sizeof(FbStip) * 8 &&
fbGlyphIn(gc, gx, gy, gWidth, gHeight)) {
fbGetDrawable(drawable, dst, dstStride, dstBpp, dstXoff,
dstYoff);
raster(dst + (gy + dstYoff) * dstStride, dstStride, dstBpp,
(FbStip *) pglyph, pgc->xor, gx + dstXoff, gHeight);
} else {
gStride = GLYPHWIDTHBYTESPADDED(pci) / sizeof(FbStip);
fbPushImage(drawable, gc,
(FbStip *)pglyph,
gStride, 0, gx, gy, gWidth, gHeight);
}
}
x += pci->metrics.characterWidth;
}
}
void
fbImageGlyphBlt(DrawablePtr drawable, GCPtr gc,
int x, int y,
unsigned int nglyph, CharInfoPtr * ppciInit, pointer glyphs)
{
FbGCPrivPtr pgc = fb_gc(gc);
CharInfoPtr *ppci;
CharInfoPtr pci;
unsigned char *pglyph; /* pointer bits in glyph */
int gWidth, gHeight; /* width and height of glyph */
FbStride gStride; /* stride of glyph */
bool opaque;
int n;
int gx, gy;
void (*raster)(FbBits *, FbStride, int, FbStip *, FbBits, int, int);
FbBits *dst = 0;
FbStride dstStride = 0;
int dstBpp = 0;
int dstXoff = 0, dstYoff = 0;
DBG(("%s x %d\n", __FUNCTION__, nglyph));
raster = 0;
if (pgc->and == 0) {
dstBpp = drawable->bitsPerPixel;
switch (dstBpp) {
case 8:
raster = fbGlyph8;
break;
case 16:
raster = fbGlyph16;
break;
case 32:
raster = fbGlyph32;
break;
}
}
x += drawable->x;
y += drawable->y;
if (TERMINALFONT(gc->font) && !raster) {
opaque = TRUE;
} else {
int xBack, widthBack;
int yBack, heightBack;
ppci = ppciInit;
n = nglyph;
widthBack = 0;
while (n--)
widthBack += (*ppci++)->metrics.characterWidth;
xBack = x;
if (widthBack < 0) {
xBack += widthBack;
widthBack = -widthBack;
}
yBack = y - FONTASCENT(gc->font);
heightBack = FONTASCENT(gc->font) + FONTDESCENT(gc->font);
fbSolidBoxClipped(drawable, gc,
xBack, yBack,
xBack + widthBack,
yBack + heightBack);
opaque = FALSE;
}
ppci = ppciInit;
while (nglyph--) {
pci = *ppci++;
pglyph = FONTGLYPHBITS(glyphs, pci);
gWidth = GLYPHWIDTHPIXELS(pci);
gHeight = GLYPHHEIGHTPIXELS(pci);
if (gWidth && gHeight) {
gx = x + pci->metrics.leftSideBearing;
gy = y - pci->metrics.ascent;
if (raster && gWidth <= sizeof(FbStip) * 8 &&
fbGlyphIn(gc, gx, gy, gWidth, gHeight)) {
fbGetDrawable(drawable, dst, dstStride, dstBpp, dstXoff,
dstYoff);
raster(dst + (gy + dstYoff) * dstStride, dstStride, dstBpp,
(FbStip *) pglyph, pgc->fg, gx + dstXoff, gHeight);
} else {
gStride = GLYPHWIDTHBYTESPADDED(pci) / sizeof(FbStip);
fbPutXYImage(drawable, gc,
pgc->fg, pgc->bg, pgc->pm,
GXcopy, opaque,
gx, gy, gWidth, gHeight,
(FbStip *) pglyph, gStride, 0);
}
}
x += pci->metrics.characterWidth;
}
}
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