/*
* TEGblt - ImageText expanded glyph fonts only. For
* 8 bit displays, in Copy mode with no clipping.
*/
/*
Copyright 1989, 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.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#if PSZ == 8
#include <X11/X.h>
#include <X11/Xmd.h>
#include <X11/Xproto.h>
#include "cfb.h"
#include <X11/fonts/fontstruct.h>
#include "dixfontstr.h"
#include "gcstruct.h"
#include "windowstr.h"
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "regionstr.h"
#include "cfbmskbits.h"
#include "cfb8bit.h"
/*
* this code supports up to 5 characters at a time. The performance
* differences between 4 and 5 is usually small (~7% on PMAX) and
* frequently negative (SPARC and Sun3), so this file is compiled
* only once for now. If you want to use the other options, you'll
* need to hack cfbgc.c as well.
*/
#ifndef NGLYPHS
#define NGLYPHS 4
#define DO_COMMON
#endif
#ifdef DO_COMMON
#define CFBTEGBLT8 cfbTEGlyphBlt8
#endif
/*
* On little-endian machines (or where fonts are padded to 32-bit
* boundaries) we can use some magic to avoid the expense of getleftbits
*/
#if ((BITMAP_BIT_ORDER == LSBFirst && NGLYPHS >= 4) || GLYPHPADBYTES == 4)
#if GLYPHPADBYTES == 1
typedef unsigned char *glyphPointer;
#define USE_LEFTBITS
#endif
#if GLYPHPADBYTES == 2
typedef unsigned short *glyphPointer;
#define USE_LEFTBITS
#endif
#if GLYPHPADBYTES == 4
typedef unsigned int *glyphPointer;
#endif
#define GetBitsL c = BitLeft (*leftChar++, lshift)
#define NGetBits1S(r) c = BitRight(*char1++ r, xoff1)
#define NGetBits1L(r) GetBitsL | BitRight(*char1++ r, xoff1)
#define NGetBits1U(r) c = *char1++ r
#define NGetBits2S(r) NGetBits1S(| BitRight(*char2++ r, widthGlyph))
#define NGetBits2L(r) NGetBits1L(| BitRight(*char2++ r, widthGlyph))
#define NGetBits2U(r) NGetBits1U(| BitRight(*char2++ r, widthGlyph))
#define NGetBits3S(r) NGetBits2S(| BitRight(*char3++ r, widthGlyph))
#define NGetBits3L(r) NGetBits2L(| BitRight(*char3++ r, widthGlyph))
#define NGetBits3U(r) NGetBits2U(| BitRight(*char3++ r, widthGlyph))
#define NGetBits4S(r) NGetBits3S(| BitRight(*char4++ r, widthGlyph))
#define NGetBits4L(r) NGetBits3L(| BitRight(*char4++ r, widthGlyph))
#define NGetBits4U(r) NGetBits3U(| BitRight(*char4++ r, widthGlyph))
#define NGetBits5S(r) NGetBits4S(| BitRight(*char5++ r, widthGlyph))
#define NGetBits5L(r) NGetBits4L(| BitRight(*char5++ r, widthGlyph))
#define NGetBits5U(r) NGetBits4U(| BitRight(*char5++ r, widthGlyph))
#define GetBits1S c = BitRight(*char1++, xoff1)
#define GetBits1L GetBitsL | BitRight(*char1++, xoff1)
#define GetBits1U c = *char1++
#define GetBits2S NGetBits1S(| BitRight(*char2++, widthGlyph))
#define GetBits2L NGetBits1L(| BitRight(*char2++, widthGlyph))
#define GetBits2U NGetBits1U(| BitRight(*char2++, widthGlyph))
#define GetBits3S NGetBits2S(| BitRight(*char3++, widthGlyph))
#define GetBits3L NGetBits2L(| BitRight(*char3++, widthGlyph))
#define GetBits3U NGetBits2U(| BitRight(*char3++, widthGlyph))
#define GetBits4S NGetBits3S(| BitRight(*char4++, widthGlyph))
#define GetBits4L NGetBits3L(| BitRight(*char4++, widthGlyph))
#define GetBits4U NGetBits3U(| BitRight(*char4++, widthGlyph))
#define GetBits5S NGetBits4S(| BitRight(*char5++, widthGlyph))
#define GetBits5L NGetBits4L(| BitRight(*char5++, widthGlyph))
#define GetBits5U NGetBits4U(| BitRight(*char5++, widthGlyph))
#else
typedef unsigned int *glyphPointer;
#define USE_LEFTBITS
#define ALL_LEFTBITS
#define GetBitsL WGetBitsL
#define GetBits1S WGetBits1S
#define GetBits1L WGetBits1L
#define GetBits1U WGetBits1U
#define GetBits2S GetBits1S Get1Bits (char2, tmpSrc) \
c |= BitRight(tmpSrc, xoff2);
#define GetBits2L GetBits1L Get1Bits (char2, tmpSrc) \
c |= BitRight(tmpSrc, xoff2);
#define GetBits2U GetBits1U Get1Bits (char2, tmpSrc) \
c |= BitRight(tmpSrc, xoff2);
#define GetBits3S GetBits2S Get1Bits (char3, tmpSrc) \
c |= BitRight(tmpSrc, xoff3);
#define GetBits3L GetBits2L Get1Bits (char3, tmpSrc) \
c |= BitRight(tmpSrc, xoff3);
#define GetBits3U GetBits2U Get1Bits (char3, tmpSrc) \
c |= BitRight(tmpSrc, xoff3);
#define GetBits4S GetBits3S Get1Bits (char4, tmpSrc) \
c |= BitRight(tmpSrc, xoff4);
#define GetBits4L GetBits3L Get1Bits (char4, tmpSrc) \
c |= BitRight(tmpSrc, xoff4);
#define GetBits4U GetBits3U Get1Bits (char4, tmpSrc) \
c |= BitRight(tmpSrc, xoff4);
#define GetBits5S GetBits4S Get1Bits (char5, tmpSrc) \
c |= BitRight(tmpSrc, xoff5);
#define GetBits5L GetBits4L Get1Bits (char5, tmpSrc) \
c |= BitRight(tmpSrc, xoff5);
#define GetBits5U GetBits4U Get1Bits (char5, tmpSrc) \
c |= BitRight(tmpSrc, xoff5);
#endif
#ifdef USE_LEFTBITS
#define IncChar(c) (c = (glyphPointer) (((char *) c) + glyphBytes))
#define Get1Bits(ch,dst) glyphbits (ch, widthGlyph, glyphMask, dst); \
IncChar (ch);
#define glyphbits(bits,width,mask,dst) getleftbits(bits,width,dst); \
dst &= mask;
#define WGetBitsL Get1Bits(leftChar,c); \
c = BitLeft (c, lshift);
#define WGetBits1S Get1Bits (char1, c) \
c = BitRight (c, xoff1);
#define WGetBits1L WGetBitsL Get1Bits (char1, tmpSrc) \
c |= BitRight (tmpSrc, xoff1);
#define WGetBits1U Get1Bits (char1, c)
#else
#define WGetBitsL GetBitsL
#define WGetBits1S GetBits1S
#define WGetBits1L GetBits1L
#define WGetBits1U GetBits1U
#endif
#if NGLYPHS == 2
# define GetBitsNS GetBits2S
# define GetBitsNL GetBits2L
# define GetBitsNU GetBits2U
# define LastChar char2
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x2
#endif
#endif
#if NGLYPHS == 3
# define GetBitsNS GetBits3S
# define GetBitsNL GetBits3L
# define GetBitsNU GetBits3U
# define LastChar char3
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x3
#endif
#endif
#if NGLYPHS == 4
# define GetBitsNS GetBits4S
# define GetBitsNL GetBits4L
# define GetBitsNU GetBits4U
# define LastChar char4
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x4
#endif
#endif
#if NGLYPHS == 5
# define GetBitsNS GetBits5S
# define GetBitsNL GetBits5L
# define GetBitsNU GetBits5U
# define LastChar char5
#ifndef CFBTEGBLT8
# define CFBTEGBLT8 cfbTEGlyphBlt8x5
#endif
#endif
/* another ugly giant macro */
#define SwitchEm switch (ew) \
{ \
case 0: \
break; \
case 1: \
while (hTmp--) { \
GetBits; \
StoreBits0 \
Loop \
} \
break; \
case 2: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) \
Loop \
} \
break; \
case 3: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step StoreBits(2) \
Loop \
} \
break; \
case 4: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) \
Loop \
} \
break; \
case 5: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) \
Loop \
} \
break; \
case 6: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) Step StoreBits(5) \
Loop \
} \
break; \
case 7: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) Step StoreBits(5) Step \
StoreBits(6) \
Loop \
} \
break; \
case 8: \
while (hTmp--) { \
GetBits; \
StoreBits0 FirstStep StoreBits(1) Step \
StoreBits(2) Step StoreBits(3) Step \
StoreBits(4) Step StoreBits(5) Step \
StoreBits(6) Step StoreBits(7) \
Loop \
} \
break; \
}
#ifdef FAST_CONSTANT_OFFSET_MODE
#define StorePixels(o,p) dst[o] = p
#define Loop dst += widthDst;
#else
#define StorePixels(o,p) do { *dst = (p); dst++; } while (0)
#define Loop dst += widthLeft;
#endif
#define Step NextBitGroup(c);
#if (BITMAP_BIT_ORDER == MSBFirst)
#define StoreBits(o) StorePixels(o,GetPixelGroup(c));
#define FirstStep Step
#else
#if PGSZ == 64
#define StoreBits(o) StorePixels(o,cfb8Pixels[(c) & PGSZBMSK]);
#define FirstStep Step
#else /* PGSZ == 32 */
#define StoreBits(o) StorePixels(o,*((CfbBits *) (((char *) cfb8Pixels) + (c & 0x3c))));
#define FirstStep c = BitLeft (c, 2);
#endif /* PGSZ */
#endif /* BITMAP_BIT_ORDER */
void
CFBTEGBLT8 (pDrawable, pGC, xInit, yInit, nglyph, ppci, pglyphBase)
DrawablePtr pDrawable;
GC *pGC;
int xInit, yInit;
unsigned int nglyph;
CharInfoPtr *ppci; /* array of character info */
pointer pglyphBase; /* start of array of glyphs */
{
register CfbBits c;
register CfbBits *dst;
register CfbBits leftMask, rightMask;
register int hTmp;
register int xoff1;
register glyphPointer char1;
register glyphPointer char2;
#if NGLYPHS >= 3
register glyphPointer char3;
#endif
#if NGLYPHS >= 4
register glyphPointer char4;
#endif
#if NGLYPHS >= 5
register glyphPointer char5;
#endif
#ifdef ALL_LEFTBITS
int xoff2, xoff3, xoff4, xoff5;
#endif
FontPtr pfont = pGC->font;
CfbBits *dstLine;
glyphPointer oldRightChar;
CfbBits *pdstBase;
glyphPointer leftChar;
int widthDst;
#ifndef FAST_CONSTANT_OFFSET_MODE
int widthLeft;
#endif
int widthGlyph;
int h;
int ew;
int x, y;
BoxRec bbox; /* for clipping */
int lshift;
int widthGlyphs;
#ifdef USE_LEFTBITS
register CfbBits glyphMask;
register CfbBits tmpSrc;
register int glyphBytes;
#endif
widthGlyph = FONTMAXBOUNDS(pfont,characterWidth);
h = FONTASCENT(pfont) + FONTDESCENT(pfont);
if (!h)
return;
x = xInit + FONTMAXBOUNDS(pfont,leftSideBearing) + pDrawable->x;
y = yInit - FONTASCENT(pfont) + pDrawable->y;
bbox.x1 = x;
bbox.x2 = x + (widthGlyph * nglyph);
bbox.y1 = y;
bbox.y2 = y + h;
switch (RECT_IN_REGION(pGC->pScreen, cfbGetCompositeClip(pGC), &bbox))
{
case rgnPART:
cfbImageGlyphBlt8(pDrawable, pGC, xInit, yInit, nglyph, ppci, pglyphBase);
case rgnOUT:
return;
}
if (!cfb8CheckPixels (pGC->fgPixel, pGC->bgPixel))
cfb8SetPixels (pGC->fgPixel, pGC->bgPixel);
leftChar = 0;
cfbGetLongWidthAndPointer(pDrawable, widthDst, pdstBase)
#if NGLYPHS == 2
widthGlyphs = widthGlyph << 1;
#else
#if NGLYPHS == 4
widthGlyphs = widthGlyph << 2;
#else
widthGlyphs = widthGlyph * NGLYPHS;
#endif
#endif
#ifdef USE_LEFTBITS
glyphMask = mfbGetendtab(widthGlyph);
glyphBytes = GLYPHWIDTHBYTESPADDED(*ppci);
#endif
pdstBase += y * widthDst;
#ifdef DO_COMMON
if (widthGlyphs <= 32)
#endif
while (nglyph >= NGLYPHS)
{
nglyph -= NGLYPHS;
hTmp = h;
dstLine = pdstBase + (x >> PWSH);
xoff1 = x & PIM;
char1 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
char2 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#ifdef ALL_LEFTBITS
xoff2 = xoff1 + widthGlyph;
#endif
#if NGLYPHS >= 3
char3 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#ifdef ALL_LEFTBITS
xoff3 = xoff2 + widthGlyph;
#endif
#endif
#if NGLYPHS >= 4
char4 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#ifdef ALL_LEFTBITS
xoff4 = xoff3 + widthGlyph;
#endif
#endif
#if NGLYPHS >= 5
char5 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
#ifdef ALL_LEFTBITS
xoff5 = xoff4 + widthGlyph;
#endif
#endif
oldRightChar = LastChar;
dst = dstLine;
if (xoff1)
{
ew = ((widthGlyphs - (PGSZB - xoff1)) >> PWSH) + 1;
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
if (!leftChar)
{
leftMask = cfbendtab[xoff1];
rightMask = cfbstarttab[xoff1];
#define StoreBits0 StorePixels (0, (dst[0] & leftMask) | \
(GetPixelGroup(c) & rightMask));
#define GetBits GetBitsNS
SwitchEm
#undef GetBits
#undef StoreBits0
}
else
{
lshift = widthGlyph - xoff1;
#define StoreBits0 StorePixels (0,GetPixelGroup(c));
#define GetBits GetBitsNL
SwitchEm
#undef GetBits
#undef StoreBits0
}
}
else
{
#if NGLYPHS == 4 && PGSZ == 32
ew = widthGlyph; /* widthGlyphs >> 2 */
#else
ew = widthGlyphs >> PWSH;
#endif
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
#define StoreBits0 StorePixels (0,GetPixelGroup(c));
#define GetBits GetBitsNU
SwitchEm
#undef GetBits
#undef StoreBits0
}
x += widthGlyphs;
leftChar = oldRightChar;
}
while (nglyph--)
{
xoff1 = x & PIM;
char1 = (glyphPointer) FONTGLYPHBITS(pglyphBase, *ppci++);
hTmp = h;
dstLine = pdstBase + (x >> PWSH);
oldRightChar = char1;
dst = dstLine;
if (xoff1)
{
ew = ((widthGlyph - (PGSZB - xoff1)) >> PWSH) + 1;
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
if (!leftChar)
{
leftMask = cfbendtab[xoff1];
rightMask = cfbstarttab[xoff1];
#define StoreBits0 StorePixels (0, (dst[0] & leftMask) | \
(GetPixelGroup(c) & rightMask));
#define GetBits WGetBits1S
SwitchEm
#undef GetBits
#undef StoreBits0
}
else
{
lshift = widthGlyph - xoff1;
#define StoreBits0 StorePixels (0,GetPixelGroup(c));
#define GetBits WGetBits1L
SwitchEm
#undef GetBits
#undef StoreBits0
}
}
else
{
ew = widthGlyph >> PWSH;
#ifndef FAST_CONSTANT_OFFSET_MODE
widthLeft = widthDst - ew;
#endif
#define StoreBits0 StorePixels (0,GetPixelGroup(c));
#define GetBits WGetBits1U
SwitchEm
#undef GetBits
#undef StoreBits0
}
x += widthGlyph;
leftChar = oldRightChar;
}
/*
* draw the tail of the last character
*/
xoff1 = x & PIM;
if (xoff1)
{
rightMask = cfbstarttab[xoff1];
leftMask = cfbendtab[xoff1];
lshift = widthGlyph - xoff1;
dst = pdstBase + (x >> PWSH);
hTmp = h;
while (hTmp--)
{
GetBitsL;
*dst = (*dst & rightMask) | (GetPixelGroup(c) & leftMask);
dst += widthDst;
}
}
}
#endif /* PSZ == 8 */
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