mfb.h

远程桌面连接工具

    DrawablePtr /*pDraw*/,
    int /*nbox*/,
    BoxPtr /*pbox*/,
    int /*alu*/,
    PixmapPtr /*pstipple*/
#endif
);
/* mfbpgbblak.c */

extern void mfbPolyGlyphBltBlack(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*x*/,
    int /*y*/,
    unsigned int /*nglyph*/,
    CharInfoPtr * /*ppci*/,
    pointer /*pglyphBase*/
#endif
);
/* mfbpgbinv.c */

extern void mfbPolyGlyphBltInvert(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*x*/,
    int /*y*/,
    unsigned int /*nglyph*/,
    CharInfoPtr * /*ppci*/,
    pointer /*pglyphBase*/
#endif
);
/* mfbpgbwht.c */

extern void mfbPolyGlyphBltWhite(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*x*/,
    int /*y*/,
    unsigned int /*nglyph*/,
    CharInfoPtr * /*ppci*/,
    pointer /*pglyphBase*/
#endif
);
/* mfbpixmap.c */

extern PixmapPtr mfbCreatePixmap(
#if NeedFunctionPrototypes
    ScreenPtr /*pScreen*/,
    int /*width*/,
    int /*height*/,
    int /*depth*/
#endif
);

extern Bool mfbDestroyPixmap(
#if NeedFunctionPrototypes
    PixmapPtr /*pPixmap*/
#endif
);

extern PixmapPtr mfbCopyPixmap(
#if NeedFunctionPrototypes
    PixmapPtr /*pSrc*/
#endif
);

extern void mfbPadPixmap(
#if NeedFunctionPrototypes
    PixmapPtr /*pPixmap*/
#endif
);

extern void mfbXRotatePixmap(
#if NeedFunctionPrototypes
    PixmapPtr /*pPix*/,
    int /*rw*/
#endif
);

extern void mfbYRotatePixmap(
#if NeedFunctionPrototypes
    PixmapPtr /*pPix*/,
    int /*rh*/
#endif
);

extern void mfbCopyRotatePixmap(
#if NeedFunctionPrototypes
    PixmapPtr /*psrcPix*/,
    PixmapPtr * /*ppdstPix*/,
    int /*xrot*/,
    int /*yrot*/
#endif
);
/* mfbplyblack.c */

extern void mfbFillPolyBlack(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*shape*/,
    int /*mode*/,
    int /*count*/,
    DDXPointPtr /*ptsIn*/
#endif
);
/* mfbplyinv.c */

extern void mfbFillPolyInvert(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*shape*/,
    int /*mode*/,
    int /*count*/,
    DDXPointPtr /*ptsIn*/
#endif
);
/* mfbplywhite.c */

extern void mfbFillPolyWhite(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*shape*/,
    int /*mode*/,
    int /*count*/,
    DDXPointPtr /*ptsIn*/
#endif
);
/* mfbpntwin.c */

extern void mfbPaintWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWin*/,
    RegionPtr /*pRegion*/,
    int /*what*/
#endif
);
/* mfbpolypnt.c */

extern void mfbPolyPoint(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*mode*/,
    int /*npt*/,
    xPoint * /*pptInit*/
#endif
);
/* mfbpushpxl.c */

extern void mfbSolidPP(
#if NeedFunctionPrototypes
    GCPtr /*pGC*/,
    PixmapPtr /*pBitMap*/,
    DrawablePtr /*pDrawable*/,
    int /*dx*/,
    int /*dy*/,
    int /*xOrg*/,
    int /*yOrg*/
#endif
);

extern void mfbPushPixels(
#if NeedFunctionPrototypes
    GCPtr /*pGC*/,
    PixmapPtr /*pBitMap*/,
    DrawablePtr /*pDrawable*/,
    int /*dx*/,
    int /*dy*/,
    int /*xOrg*/,
    int /*yOrg*/
#endif
);
/* mfbscrclse.c */

extern Bool mfbCloseScreen(
#if NeedFunctionPrototypes
    int /*index*/,
    ScreenPtr /*pScreen*/
#endif
);
/* mfbscrinit.c */

extern Bool mfbAllocatePrivates(
#if NeedFunctionPrototypes
    ScreenPtr /*pScreen*/,
    int * /*pWinIndex*/,
    int * /*pGCIndex*/
#endif
);

extern Bool mfbScreenInit(
#if NeedFunctionPrototypes
    ScreenPtr /*pScreen*/,
    pointer /*pbits*/,
    int /*xsize*/,
    int /*ysize*/,
    int /*dpix*/,
    int /*dpiy*/,
    int /*width*/
#endif
);
/* mfbseg.c */

extern void mfbSegmentSS(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*nseg*/,
    xSegment * /*pSeg*/
#endif
);

extern void mfbSegmentSD(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    int /*nseg*/,
    xSegment * /*pSeg*/
#endif
);
/* mfbsetsp.c */

extern int mfbSetScanline(
#if NeedFunctionPrototypes
    int /*y*/,
    int /*xOrigin*/,
    int /*xStart*/,
    int /*xEnd*/,
    PixelType * /*psrc*/,
    int /*alu*/,
    PixelType * /*pdstBase*/,
    int /*widthDst*/
#endif
);

extern void mfbSetSpans(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr /*pGC*/,
    char * /*psrc*/,
    DDXPointPtr /*ppt*/,
    int * /*pwidth*/,
    int /*nspans*/,
    int /*fSorted*/
#endif
);
/* mfbteblack.c */

extern void mfbTEGlyphBltBlack(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr/*pGC*/,
    int /*x*/,
    int /*y*/,
    unsigned int /*nglyph*/,
    CharInfoPtr * /*ppci*/,
    pointer /*pglyphBase*/
#endif
);
/* mfbtewhite.c */

extern void mfbTEGlyphBltWhite(
#if NeedFunctionPrototypes
    DrawablePtr /*pDrawable*/,
    GCPtr/*pGC*/,
    int /*x*/,
    int /*y*/,
    unsigned int /*nglyph*/,
    CharInfoPtr * /*ppci*/,
    pointer /*pglyphBase*/
#endif
);
/* mfbtileC.c */

extern void mfbTileAreaPPWCopy(
#if NeedFunctionPrototypes
    DrawablePtr /*pDraw*/,
    int /*nbox*/,
    BoxPtr /*pbox*/,
    int /*alu*/,
    PixmapPtr /*ptile*/
#endif
);
/* mfbtileG.c */

extern void mfbTileAreaPPWGeneral(
#if NeedFunctionPrototypes
    DrawablePtr /*pDraw*/,
    int /*nbox*/,
    BoxPtr /*pbox*/,
    int /*alu*/,
    PixmapPtr /*ptile*/
#endif
);

extern void mfbTileAreaPPW(
#if NeedFunctionPrototypes
    DrawablePtr /*pDraw*/,
    int /*nbox*/,
    BoxPtr /*pbox*/,
    int /*alu*/,
    PixmapPtr /*ptile*/
#endif
);
/* mfbwindow.c */

extern Bool mfbCreateWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWin*/
#endif
);

extern Bool mfbDestroyWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWin*/
#endif
);

extern Bool mfbMapWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWindow*/
#endif
);

extern Bool mfbPositionWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWin*/,
    int /*x*/,
    int /*y*/
#endif
);

extern Bool mfbUnmapWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWindow*/
#endif
);

extern void mfbCopyWindow(
#if NeedFunctionPrototypes
    WindowPtr /*pWin*/,
    DDXPointRec /*ptOldOrg*/,
    RegionPtr /*prgnSrc*/
#endif
);

extern Bool mfbChangeWindowAttributes(
#if NeedFunctionPrototypes
    WindowPtr /*pWin*/,
    unsigned long /*mask*/
#endif
);
/* mfbzerarc.c */

extern void mfbZeroPolyArcSS(
#if NeedFunctionPrototypes
    DrawablePtr /*pDraw*/,
    GCPtr /*pGC*/,
    int /*narcs*/,
    xArc * /*parcs*/
#endif
);

/*
   private filed of pixmap
   pixmap.devPrivate = (PixelType *)pointer_to_bits
   pixmap.devKind = width_of_pixmap_in_bytes

   private field of screen
   a pixmap, for which we allocate storage.  devPrivate is a pointer to
the bits in the hardware framebuffer.  note that devKind can be poked to
make the code work for framebuffers that are wider than their
displayable screen (e.g. the early vsII, which displayed 960 pixels
across, but was 1024 in the hardware.)

   private field of GC 
	Freeing pCompositeClip is done based on the value of
freeCompClip; if freeCompClip is not carefully maintained, we will end
up losing storage or freeing something that isn't ours.
*/

typedef struct {
    unsigned char	rop;		/* reduction of rasterop to 1 of 3 */
    unsigned char	ropOpStip;	/* rop for opaque stipple */
    unsigned char	ropFillArea;	/*  == alu, rop, or ropOpStip */
    unsigned	fExpose:1;		/* callexposure handling ? */
    unsigned	freeCompClip:1;
    PixmapPtr	pRotatedPixmap;		/* tile/stipple rotated to align */
    RegionPtr	pCompositeClip;		/* free this based on freeCompClip
					   flag rather than NULLness */
    void 	(* FillArea)(		/* fills regions; look at the code */
#if NeedNestedPrototypes
		DrawablePtr /*pDraw*/,
		int /*nbox*/,
		BoxPtr /*pbox*/,
		int /*alu*/,
		PixmapPtr /*nop*/
#endif
		);
    } mfbPrivGC;
typedef mfbPrivGC	*mfbPrivGCPtr;

extern int  mfbGCPrivateIndex;		/* index into GC private array */
extern int  mfbWindowPrivateIndex;	/* index into Window private array */
#ifdef PIXMAP_PER_WINDOW
extern int  frameWindowPrivateIndex;	/* index into Window private array */
#endif

/* private field of window */
typedef struct {
    unsigned char fastBorder;	/* non-zero if border tile is 32 bits wide */
    unsigned char fastBackground;
    unsigned short unused; /* pad for alignment with Sun compiler */
    DDXPointRec	oldRotate;
    PixmapPtr	pRotatedBackground;
    PixmapPtr	pRotatedBorder;
    } mfbPrivWin;

/* Common macros for extracting drawing information */

#define mfbGetTypedWidth(pDrawable,type) (\
    (((pDrawable)->type == DRAWABLE_WINDOW) ? \
     (int) (((PixmapPtr)((pDrawable)->pScreen->devPrivate))->devKind) : \
     (int)(((PixmapPtr)pDrawable)->devKind)) / sizeof (type))

#define mfbGetByteWidth(pDrawable) mfbGetTypedWidth(pDrawable, unsigned char)

#define mfbGetPixelWidth(pDrawable) mfbGetTypedWidth(pDrawable, PixelType)
    
#define mfbGetTypedWidthAndPointer(pDrawable, width, pointer, wtype, ptype) {\
    PixmapPtr   _pPix; \
    if ((pDrawable)->type == DRAWABLE_WINDOW) \
	_pPix = (PixmapPtr) (pDrawable)->pScreen->devPrivate; \
    else \
	_pPix = (PixmapPtr) (pDrawable); \
    (pointer) = (ptype *) _pPix->devPrivate.ptr; \
    (width) = ((int) _pPix->devKind) / sizeof (wtype); \
}

#define mfbGetByteWidthAndPointer(pDrawable, width, pointer) \
    mfbGetTypedWidthAndPointer(pDrawable, width, pointer, unsigned char, unsigned char)

#define mfbGetPixelWidthAndPointer(pDrawable, width, pointer) \
    mfbGetTypedWidthAndPointer(pDrawable, width, pointer, PixelType, PixelType)

#define mfbGetWindowTypedWidthAndPointer(pWin, width, pointer, wtype, ptype) {\
    PixmapPtr	_pPix = (PixmapPtr) (pWin)->drawable.pScreen->devPrivate; \
    (pointer) = (ptype *) _pPix->devPrivate.ptr; \
    (width) = ((int) _pPix->devKind) / sizeof (wtype); \
}

#define mfbGetWindowPixelWidthAndPointer(pWin, width, pointer) \
    mfbGetWindowTypedWidthAndPointer(pWin, width, pointer, PixelType, PixelType)

#define mfbGetWindowByteWidthAndPointer(pWin, width, pointer) \
    mfbGetWindowTypedWidthAndPointer(pWin, width, pointer, char, char)

/*  mfb uses the following macros to calculate addresses in drawables.
 *  To support banked framebuffers, the macros come in four flavors.
 *  All four collapse into the same definition on unbanked devices.
 *  
 *  mfbScanlineFoo - calculate address and do bank switching
 *  mfbScanlineFooNoBankSwitch - calculate address, don't bank switch
 *  mfbScanlineFooSrc - calculate address, switch source bank
 *  mfbScanlineFooDst - calculate address, switch destination bank
 */

/* The NoBankSwitch versions are the same for banked and unbanked cases */

#define mfbScanlineIncNoBankSwitch(_ptr, _off) _ptr += (_off)
#define mfbScanlineOffsetNoBankSwitch(_ptr, _off) ((_ptr) + (_off))
#define mfbScanlineDeltaNoBankSwitch(_ptr, _y, _w) \
    mfbScanlineOffsetNoBankSwitch(_ptr, (_y) * (_w))
#define mfbScanlineNoBankSwitch(_ptr, _x, _y, _w) \
    mfbScanlineOffsetNoBankSwitch(_ptr, (_y) * (_w) + ((_x) >> MFB_PWSH))

#ifdef MFB_LINE_BANK

#include "mfblinebank.h" /* get macro definitions from this file */

#else /* !MFB_LINE_BANK - unbanked case */

#define mfbScanlineInc(_ptr, _off)       mfbScanlineIncNoBankSwitch(_ptr, _off)
#define mfbScanlineIncSrc(_ptr, _off)     mfbScanlineInc(_ptr, _off)
#define mfbScanlineIncDst(_ptr, _off)     mfbScanlineInc(_ptr, _off)

#define mfbScanlineOffset(_ptr, _off) mfbScanlineOffsetNoBankSwitch(_ptr, _off)
#define mfbScanlineOffsetSrc(_ptr, _off)  mfbScanlineOffset(_ptr, _off)
#define mfbScanlineOffsetDst(_ptr, _off)  mfbScanlineOffset(_ptr, _off)

#define mfbScanlineSrc(_ptr, _x, _y, _w)  mfbScanline(_ptr, _x, _y, _w)
#define mfbScanlineDst(_ptr, _x, _y, _w)  mfbScanline(_ptr, _x, _y, _w)

#define mfbScanlineDeltaSrc(_ptr, _y, _w) mfbScanlineDelta(_ptr, _y, _w)
#define mfbScanlineDeltaDst(_ptr, _y, _w) mfbScanlineDelta(_ptr, _y, _w)

#endif /* MFB_LINE_BANK */

#define mfbScanlineDelta(_ptr, _y, _w) \
    mfbScanlineOffset(_ptr, (_y) * (_w))

#define mfbScanline(_ptr, _x, _y, _w) \
    mfbScanlineOffset(_ptr, (_y) * (_w) + ((_x) >> MFB_PWSH))


/* precomputed information about each glyph for GlyphBlt code.
   this saves recalculating the per glyph information for each box.
*/
typedef struct _pos{
    int xpos;		/* xposition of glyph's origin */
    int xchar;		/* x position mod 32 */
    int leftEdge;
    int rightEdge;
    int topEdge;
    int bottomEdge;
    PixelType *pdstBase;	/* longword with character origin */
    int widthGlyph;	/* width in bytes of this glyph */
} TEXTPOS;

/* reduced raster ops for mfb */
#define RROP_BLACK	GXclear
#define RROP_WHITE	GXset
#define RROP_NOP	GXnoop
#define RROP_INVERT	GXinvert

/* macros for mfbbitblt.c, mfbfillsp.c
   these let the code do one switch on the rop per call, rather
than a switch on the rop per item (span or rectangle.)
*/

#define fnCLEAR(src, dst)	(0)
#define fnAND(src, dst) 	(src & dst)
#define fnANDREVERSE(src, dst)	(src & ~dst)
#define fnCOPY(src, dst)	(src)
#define fnANDINVERTED(src, dst)	(~src & dst)
#define fnNOOP(src, dst)	(dst)
#define fnXOR(src, dst)		(src ^ dst)
#define fnOR(src, dst)		(src | dst)
#define fnNOR(src, dst)		(~(src | dst))
#define fnEQUIV(src, dst)	(~src ^ dst)
#define fnINVERT(src, dst)	(~dst)
#define fnORREVERSE(src, dst)	(src | ~dst)
#define fnCOPYINVERTED(src, dst)(~src)
#define fnORINVERTED(src, dst)	(~src | dst)
#define fnNAND(src, dst)	(~(src & dst))
#define fnSET(src, dst)		(~0)

/*  Using a "switch" statement is much faster in most cases
 *  since the compiler can do a look-up table or multi-way branch
 *  instruction, depending on the architecture.  The result on
 *  A Sun 3/50 is at least 2.5 times faster, assuming a uniform
 *  distribution of RasterOp operation types.
 *
 *  However, doing some profiling on a running system reveals
 *  GXcopy is the operation over 99.5% of the time and
 *  GXxor is the next most frequent (about .4%), so we make special
 *  checks for those first.
 *
 *  Note that this requires a change to the "calling sequence"
 *  since we can't engineer a "switch" statement to have an lvalue.
 */
#define DoRop(result, alu, src, dst) \
{ \
    if (alu == GXcopy) \
	result = fnCOPY (src, dst); \
    else if (alu == GXxor) \
        result = fnXOR (src, dst); \
    else \
	switch (alu) \
	{ \
	  case GXclear: \
	    result = fnCLEAR (src, dst); \
	    break; \
	  case GXand: \
	    result = fnAND (src, dst); \
	    break; \
	  case GXandReverse: \
	    result = fnANDREVERSE (src, dst); \
	    break; \
	  case GXandInverted: \
	    result = fnANDINVERTED (src, dst); \
	    break; \
	  case GXnoop: \
	    result = fnNOOP (src, dst); \
	    break; \
	  case GXor: \
	    result = fnOR (src, dst); \
	    break; \
	  case GXnor: \
	    result = fnNOR (src, dst); \
	    break; \
	  case GXequiv: \
	    result = fnEQUIV (src, dst); \
	    break; \
	  case GXinvert: \
	    result = fnINVERT (src, dst); \
	    break; \
	  case GXorReverse: \
	    result = fnORREVERSE (src, dst); \
	    break; \
	  case GXcopyInverted: \
	    result = fnCOPYINVERTED (src, dst); \
	    break; \
	  case GXorInverted: \
	    result = fnORINVERTED (src, dst); \
	    break; \
	  case GXnand: \
	    result = fnNAND (src, dst); \
	    break; \
	  case GXset: \
	    result = fnSET (src, dst); \
	    break; \
	} \
}


/*  C expression fragments for various operations.  These get passed in
 *  as -D's on the compile command line.  See mfb/Imakefile.  This
 *  fixes XBUG 6319.
 *
 *  This seems like a good place to point out that mfb's use of the
 *  words black and white is an unfortunate misnomer.  In mfb code, black
 *  means zero, and white means one.
 */
#define MFB_OPEQ_WHITE  |=
#define MFB_OPEQ_BLACK  &=~
#define MFB_OPEQ_INVERT ^=
#define MFB_EQWHOLEWORD_WHITE   =~0
#define MFB_EQWHOLEWORD_BLACK   =0
#define MFB_EQWHOLEWORD_INVERT  ^=~0
#define MFB_OP_WHITE    /* nothing */
#define MFB_OP_BLACK    ~