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#include "pixmap.h"
#include "region.h"
#include "gc.h"
#include "colormap.h"
#include "miscstruct.h"

extern Bool cfbScreenInit();
extern void cfbQueryBestSize();
extern Bool cfbCreateWindow();
extern Bool cfbPositionWindow();
extern Bool cfbChangeWindowAttributes();
extern Bool cfbMapWindow();
extern Bool cfbUnmapWindow();
extern Bool cfbDestroyWindow();

extern Bool cfbRealizeFont();
extern Bool cfbUnrealizeFont();
extern Bool cfbRealizeCursor();
extern Bool cfbUnrealizeCursor();
extern Bool cfbScreenSaver();
extern Bool cfbCreateGC();

extern PixmapPtr cfbCreatePixmap();
extern Bool cfbDestroyPixmap();

extern void cfbCopyWindow();
extern void cfbPaintWindowBorder();
extern void cfbPaintWindowBackground();
extern void cfbPaintAreaNone();
extern void cfbPaintAreaPR();
extern void cfbPaintAreaSolid();
extern void cfbPaintArea32();
extern void cfbPaintAreaOther();

extern void miPolyFillRect();
extern void miPolyFillArc();

extern void cfbDestroyGC();
extern void cfbValidateGC();
extern void cfbDestroyClip();
extern void cfbCopyClip();
extern void cfbChangeClip();
extern void cfbCopyGCDest();

extern void cfbSetSpans();
extern unsigned int *cfbGetSpans();
extern void cfbSolidFS();
extern void cfbUnnaturalTileFS();
extern void cfbUnnaturalStippleFS();

/* included from mfb.h; we can't include mfb.h directly because of other 
 * conflicts */
extern void mfbSetSpans();
extern unsigned int *mfbGetSpans();
extern void mfbUnnaturalTileFS();
extern void mfbUnnaturalStippleFS();
extern Bool mfbRealizeFont();
extern Bool mfbUnrealizeFont();
extern RegionPtr mfbPixmapToRegion();

extern void miNotMiter();
extern void miMiter();
extern PixmapPtr cfbCopyPixmap();
extern void  cfbConvertRects();
extern void  miPolyArc();
extern void  miFillPolyArc();

extern void miPutImage();
extern void miGetImage();
extern void miCopyArea();
extern void miCopyPlane();
extern void miPolyPoint();
extern void miPushPixels();

extern int cfbListInstalledColormaps();

extern ColormapPtr cfbGetStaticColormap();
#ifdef	STATIC_COLOR
extern void cfbResolveStaticColor();
#endif

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

/* private field of GC */
typedef struct {
    short	rop;		/* reduction of rasterop to 1 of 3 */
    short	ropOpStip;	/* rop for opaque stipple */
    short	fExpose;	/* callexposure handling ? */
    short	freeCompClip;
    PixmapPtr	pRotatedTile;	/* tile/stipple  rotated to align with window */
    PixmapPtr	pRotatedStipple;	/* and using offsets */
    RegionPtr	pAbsClientRegion; /* client region in screen coords */
    RegionPtr	pCompositeClip; /* FREE_CC or REPLACE_CC */
    } cfbPrivGC;
typedef cfbPrivGC	*cfbPrivGCPtr;

/* freeCompositeClip values */
#define REPLACE_CC	0		/* compsite clip is a copy of a
					pointer, so it doesn't need to 
					be freed; just overwrite it.
					this happens if there is no
					client clip and the gc is
					clipped by children 
					*/
#define FREE_CC		1		/* composite clip is a real
					   region that we need to free
					*/

/* private field of window */
typedef struct {
    int		fastBorder;	/* non-zero if border is 32 bits wide */
    int		fastBackground;
    DDXPointRec	oldRotate;
    PixmapPtr	pRotatedBackground;
    PixmapPtr	pRotatedBorder;
    } cfbPrivWin;

/* 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;
    int *pdstBase;	/* longword with character origin */
    int widthGlyph;	/* width in bytes of this glyph */
} TEXTPOS;

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

/* out of clip region codes */
#define OUT_LEFT 0x08
#define OUT_RIGHT 0x04
#define OUT_ABOVE 0x02
#define OUT_BELOW 0x01

/* major axis for bresenham's line */
#define X_AXIS	0
#define Y_AXIS	1

/* optimization codes for FONT's devPrivate field */
#define FT_VARPITCH	0
#define FT_SMALLPITCH	1
#define FT_FIXPITCH	2

/* macros for cfbbitblt.c, cfbfillsp.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)

/* Binary search to figure out what to do for the raster op.  It may
 * do 5 comparisons, but at least it does no function calls 
 * Special cases copy because it's so frequent 
 * XXX - can't use this in many cases because it has no plane mask.
 */
#define DoRop(alu, src, dst) \
( ((alu) == GXcopy) ? (src) : \
    (((alu) >= GXnor) ? \
     (((alu) >= GXcopyInverted) ? \
       (((alu) >= GXnand) ? \
         (((alu) == GXnand) ? ~((src) & (dst)) : ~0) : \
         (((alu) == GXcopyInverted) ? ~(src) : (~(src) | (dst)))) : \
       (((alu) >= GXinvert) ? \
	 (((alu) == GXinvert) ? ~(dst) : ((src) | ~(dst))) : \
	 (((alu) == GXnor) ? ~((src) | (dst)) : (~(src) ^ (dst)))) ) : \
     (((alu) >= GXandInverted) ? \
       (((alu) >= GXxor) ? \
	 (((alu) == GXxor) ? ((src) ^ (dst)) : ((src) | (dst))) : \
	 (((alu) == GXnoop) ? (dst) : (~(src) & (dst)))) : \
       (((alu) >= GXandReverse) ? \
	 (((alu) == GXandReverse) ? ((src) & ~(dst)) : (src)) : \
	 (((alu) == GXand) ? ((src) & (dst)) : 0)))  ) )

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