/******************************Module*Header*******************************\
* Module Name: textxlg.c
*
*
* Copyright (c) 1995-1999 Microsoft Corporation
\**************************************************************************/
#if 0
The following code assumes that the gray glyphs comming from the
font driver have DWORD aligned scans.....
/******************************Public*Routine******************************\
*
* Routine Name
*
* draw_gray_nf_ntb_o_to_temp_start
*
* Routine Description:
*
* The input glyphs are 4-bpp gray scale bitmaps that are DWORD aligned.
* Specialized glyph dispatch routine for non-fixed pitch, top and
* bottom not aligned glyphs that do overlap. This routine calculates
* the glyph's position on the temp buffer, then determines the correct
* highly specialized routine to be used to draw each glyph based on
* the glyph width, alignment and rotation
*
* Arguments:
*
* pGlyphPos - Pointer to first in list of GLYPHPOS structs
* cGlyph - Number of glyphs to draw
* pjDst - Pointer to temp 4Bpp buffer to draw into
* ulLeftEdge - left edge of TextRect & 0xfffffff8
* This is equal to the position of the left
* edge rounded down to the nearest 32-bit
* aligned boundary (8 pixels / DWORD)
* dpDst - Scan line Delta for TempBuffer (always pos)
*
* Return Value:
*
* None
*
\**************************************************************************/
VOID
draw_gray_nf_ntb_o_to_temp_start(
PGLYPHPOS pGlyphPos,
ULONG cGlyphs,
PUCHAR pjDst,
ULONG ulLeftEdge,
ULONG dpDst,
ULONG ulCharInc,
ULONG ulTempTop
)
{
GLYPHBITS *pgb; // pointer to current GLYPHBITS
int x; // pixel offset of the left edge of the glyph bitmap
// from the left edge of the output (4-bpp) bitmap
int y; // the pixel offset of the top edge of the glyph
// bitmap from the top edge of the output bitmap.
GLYPHPOS *pgpOut; // sentinel for loop
void (*apfnGray[8])(ULONG*,ptrdiff_t,ULONG*,ULONG*,ptrdiff_t);
/**/DbgPrint(
/**/ "draw_gray_nf_ntb_o_to_temp_start(\n"
/**/ " PGLYPHPOS pGlyphPos = %-#x\n"
/**/ " ULONG cGlyphs = %u\n"
/**/ " PUCHAR pjDst = %-#x\n"
/**/ " ULONG ulLeftEdge = %u\n"
/**/ " ULONG dpDst = %-#x\n"
/**/ " ULONG ulCharInc = %u\n"
/**/ " ULONG ulTempTop = %u\n"
/**/ " )\n"
/**/);
/**/DbgBreakPoint();
for (pgpOut = pGlyphPos + cGlyphs; pGlyphPos < pgpOut; pGlyphPos++)
{
ULONG *pulSrcScan;
ptrdiff_t dpulSrcScan;
pgb = pGlyphPos->pgdf->pgb;
x = pGlyphPos->ptl.x + pgb->ptlOrigin.x - ulLeftEdge;
y = pGlyphPos->ptl.y + pgb->ptlOrigin.y - ulTempTop ;
pulSrcScan = (ULONG*) &(pgb->aj[0]);
dpulSrcScan = (ptrdiff_t) (pgb->sizlBitmap.cx + 7)/8;
//
// dispatch to the appropriate function
//
/**/ DbgPrint(
/**/ "pgb = %-#x\n"
/**/ "x = %d\n"
/**/ "y = %d\n"
/**/ "pulSrcScan = %-#x\n"
/**/ "dpulSrcScan = %u = %-#x\n"
/**/ , pgb
/**/ , x
/**/ , y
/**/ , pulSrcScan
/**/ , dpulSrcScan
/**/ );
/**/ DbgBreakPoint();
(*apfnGray[x & 0x07]) (
pulSrcScan ,
dpulSrcScan ,
pulSrcScan + dpulSrcScan * (unsigned) pgb->sizlBitmap.cy ,
(ULONG*) (pjDst + y * dpDst) + ( x / 8) ,
(ptrdiff_t) dpDst / sizeof(ULONG)
);
}
}
void
vOrShiftGrayGlyph0(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
*pulDst |= *pulSrc;
}
}
}
void
vOrShiftGrayGlyph2(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG a = *pulSrc;
*pulDst |= (a << 4*2) + (b >> (32-4*2));
b = a;
}
}
}
void
vOrShiftGrayGlyph4(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG a = *pulSrc;
*pulDst |= (a << 4*4) + (b >> (32-4*4));
b = a;
}
}
}
void
vOrShiftGrayGlyph6(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG a = *pulSrc;
*pulDst |= (a << 4*6) + (b >> (32-4*6));
b = a;
}
}
}
#define MASK_0 0x0f0f0f0f
#define MASK_1 0xf0f0f0f0
void
vOrShiftGrayGlyph1(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG u;
ULONG a = *pulSrc;
u = (a & MASK_0) << 12;
u |= (b & MASK_0) >> 20;
u |= (a & MASK_1) >> 4;
u |= (b & MASK_1) << 28;
*pulDst = u;
b = a;
}
}
}
void
vOrShiftGrayGlyph3(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG u;
ULONG a = *pulSrc;
u = (a & MASK_0) << 20;
u |= (b & MASK_0) >> 12;
u |= (a & 0x00f0f0f0) << 4;
u |= (b & MASK_1) >> 28;
*pulDst = u;
b = a;
}
}
}
void
vOrShiftGrayGlyph5(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG u;
ULONG a = *pulSrc;
u = (a & MASK_0) << 28;
u |= (b & MASK_0) >> 4;
u |= (a & MASK_1) << 4;
u |= (b & MASK_1) >> 28;
*pulDst = u;
b = a;
}
}
}
void
vOrShiftGrayGlyph7(
ULONG *pulSrcScan
, ptrdiff_t dpulSrcScan
, ULONG *pulSrcScanOut
, ULONG *pulDstScan
, ptrdiff_t dpulDstScan
)
{
for (
; pulSrcScan < pulSrcScanOut
; pulDstScan += dpulDstScan,
pulSrcScan += dpulSrcScan
)
{
ULONG *pulSrc, *pulDst, *pulSrcOut;
ULONG b = 0;
for (
pulDst = pulDstScan,
pulSrc = pulSrcScan,
pulSrcOut = pulSrcScan + dpulSrcScan
; pulSrc < pulSrcOut
; pulDst++,
pulSrc++
)
{
ULONG u;
ULONG a = *pulSrc;
u = (a & MASK_0) >> 28;
u |= (b & MASK_0) << 4;
u |= (a & MASK_1) << 20;
u |= (b & MASK_1) >> 12;
*pulDst = u;
b = a;
}
}
}
void (*apfnGray[8])(ULONG*,ptrdiff_t,ULONG*,ULONG*,ptrdiff_t) =
{
vOrShiftGrayGlyph0
,vOrShiftGrayGlyph1
,vOrShiftGrayGlyph2
,vOrShiftGrayGlyph3
,vOrShiftGrayGlyph4
,vOrShiftGrayGlyph5
,vOrShiftGrayGlyph6
,vOrShiftGrayGlyph7
};
#endif