From 74a4d8c26dd3c1e9febcb717cfd6cb6512991a7a Mon Sep 17 00:00:00 2001
From: "Charles.Forsyth" <devnull@localhost>
Date: Fri, 22 Dec 2006 21:39:35 +0000
Subject: 20060303

---
 os/boot/rpcg/libg.h | 418 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 418 insertions(+)
 create mode 100644 os/boot/rpcg/libg.h

(limited to 'os/boot/rpcg/libg.h')

diff --git a/os/boot/rpcg/libg.h b/os/boot/rpcg/libg.h
new file mode 100644
index 00000000..5c2cec26
--- /dev/null
+++ b/os/boot/rpcg/libg.h
@@ -0,0 +1,418 @@
+#pragma	src	"/sys/src/libg"
+#pragma	lib	"libg.a"
+
+enum	/* constants for I/O to devgraphics */
+{
+	Tilehdr = 40,
+	Tilesize = 8000
+};
+
+/*
+ *  you may think it's a blit, but it's gnot
+ */
+enum
+{
+	EMAXMSG = 128+8192,	/* size of 9p header+data */
+};
+
+/*
+ * Types
+ */
+
+typedef struct	Bitmap		Bitmap;
+typedef struct	Display	Display;
+typedef struct	Point		Point;
+typedef struct	Rectangle 	Rectangle;
+typedef struct	Cursor		Cursor;
+typedef struct	Mouse		Mouse;
+typedef struct	Menu		Menu;
+typedef struct	Font		Font;
+typedef struct	Fontchar	Fontchar;
+typedef struct	Subfont		Subfont;
+typedef struct	Cachefont	Cachefont;
+typedef struct	Cacheinfo	Cacheinfo;
+typedef struct	Cachesubf	Cachesubf;
+typedef struct	Event		Event;
+typedef struct	Slave		Slave;
+typedef struct	Ebuf		Ebuf;
+typedef struct	RGB		RGB;
+typedef struct	Linedesc	Linedesc;
+typedef struct	DRefret	DRefret;
+
+struct DRefret
+{
+	int		n;	/* number of bytes */
+	int		dy;	/* number of lines */
+	uchar	*dp;	/* pointer to data */
+};
+
+struct	Point
+{
+	int	x;
+	int	y;
+};
+
+struct Rectangle
+{
+	Point min;
+	Point max;
+};
+
+typedef	DRefret DRefresh(Display*, int, Rectangle, uchar*, uchar*, int);
+
+struct	Bitmap
+{
+	Rectangle		r;		/* rectangle in data area, local coords */
+	Rectangle 	clipr;		/* clipping region */
+	int			ldepth;	/* log base 2 of number of bits per pixel */
+	ulong		*base;	/* pointer to start of data */
+	int			zero;		/* base+zero=&word containing (0,0) */
+	ulong		width;	/* width in words of total data area */
+	Display		*display;	/* if present */
+};
+
+struct	Display
+{
+	uchar		*data;	/* transfer buffer */
+	Rectangle		r;
+	int			ldepth;
+	Rectangle		bb;		/* bounding box of changes */
+	int			waste;	/* unused part of bb */
+	Rectangle		bound;	/* memory for boundin/boundout */
+	Bitmap		*image;	/* owner */
+	int			id;
+	int			fd;
+	int			ctlfd;
+	int			local;
+	int			bytewidth;
+	void			*drdata1;	/* storage for drefresh() */
+	void			*drdata2;	/* storage for drefresh() */
+	DRefresh		*drefresh;
+};
+
+
+struct	Mouse
+{
+	int	buttons;	/* bit array: LMR=124 */
+	Point	xy;
+	ulong	msec;
+};
+
+struct	Cursor
+{
+	Point	offset;
+	uchar	clr[2*16];
+	uchar	set[2*16];
+};
+
+struct Menu
+{
+	char	**item;
+	char	*(*gen)(int);
+	int	lasthit;
+};
+
+struct Linedesc
+{
+	int	x0;
+	int	y0;
+	char	xmajor;
+	char	slopeneg;
+	long	dminor;
+	long	dmajor;
+};
+
+/*
+ * Subfonts
+ *
+ * given char c, Subfont *f, Fontchar *i, and Point p, one says
+ *	i = f->info+c;
+ *	bitblt(b, Pt(p.x+i->left,p.y+i->top),
+ *		bitmap, Rect(i->x,i->top,(i+1)->x,i->bottom),
+ *		fc);
+ *	p.x += i->width;
+ * where bitmap b is the repository of the images.
+ *
+ */
+
+struct	Fontchar
+{
+	short	x;		/* left edge of bits */
+	uchar	top;		/* first non-zero scan-line */
+	uchar	bottom;		/* last non-zero scan-line + 1 */
+	char	left;		/* offset of baseline */
+	uchar	width;		/* width of baseline */
+};
+
+struct	Subfont
+{
+	short	n;		/* number of chars in font */
+	uchar	height;		/* height of bitmap */
+	char	ascent;		/* top of bitmap to baseline */
+	Fontchar *info;		/* n+1 character descriptors */
+	Bitmap	*bits;		/* of font */
+};
+
+enum
+{
+	/* starting values */
+	LOG2NFCACHE =	6,
+	NFCACHE =	(1<<LOG2NFCACHE),	/* #chars cached */
+	NFLOOK =	5,			/* #chars to scan in cache */
+	NFSUBF =	2,			/* #subfonts to cache */
+	/* max value */
+	MAXFCACHE =	2048+NFLOOK,		/* generous upper limit */
+	MAXSUBF =	50,			/* generous upper limit */
+	/* deltas */
+	DSUBF = 	4,
+	/* expiry ages */
+	SUBFAGE	=	10000,
+	CACHEAGE =	10000,
+};
+
+struct Cachefont
+{
+	Rune	min;	/* lowest rune value to be taken from subfont */
+	Rune	max;	/* highest rune value+1 to be taken from subfont */
+	int	offset;	/* position in subfont of character at min */
+	int	abs;	/* name has been made absolute */
+	char	*name;
+};
+
+struct Cacheinfo
+{
+	Rune		value;	/* value of character at this slot in cache */
+	ushort		age;
+	ulong		xright;	/* right edge of bits */
+	Fontchar;
+};
+
+struct Cachesubf
+{
+	ulong		age;	/* for replacement */
+	Cachefont	*cf;	/* font info that owns us */
+	Subfont		*f;	/* attached subfont */
+};
+
+struct Font
+{
+	char		*name;
+	short		height;	/* max height of bitmap, interline spacing */
+	short		ascent;	/* top of bitmap to baseline */
+	int			maxldepth;	/* over all loaded subfonts */
+	short		width;	/* widest so far; used in caching only */	
+	short		ldepth;	/* of images */
+	short		nsub;	/* number of subfonts */
+	ulong		age;	/* increasing counter; used for LRU */
+	int		ncache;	/* size of cache */
+	int		nsubf;	/* size of subfont list */
+	Cacheinfo	*cache;
+	Cachesubf	*subf;
+	Cachefont	**sub;	/* as read from file */
+	Bitmap	*cacheimage;
+};
+
+struct	Event
+{
+	int	kbdc;
+	Mouse	mouse;
+	int	n;		/* number of characters in mesage */
+	uchar	data[EMAXMSG];	/* message from an arbitrary file descriptor */
+};
+
+struct Slave{
+	int	pid;
+	Ebuf	*head;		/* queue of messages for this descriptor */
+	Ebuf	*tail;
+};
+
+struct Ebuf{
+	Ebuf	*next;
+	int	n;		/* number of bytes in buf */
+	uchar	buf[EMAXMSG];
+};
+
+struct RGB
+{
+	ulong	red;
+	ulong	green;
+	ulong	blue;
+};
+
+/*
+ * Codes for bitblt etc.
+ *
+ *	       D
+ *	     0   1
+ *         ---------
+ *	 0 | 1 | 2 |
+ *     S   |---|---|
+ * 	 1 | 4 | 8 |
+ *         ---------
+ *
+ *	Usually used as D|S; DorS is so tracebacks are readable.
+ */
+typedef
+enum	Fcode
+{
+	Zero		= 0x0,
+	DnorS		= 0x1,
+	DandnotS	= 0x2,
+	notS		= 0x3,
+	notDandS	= 0x4,
+	notD		= 0x5,
+	DxorS		= 0x6,
+	DnandS		= 0x7,
+	DandS		= 0x8,
+	DxnorS		= 0x9,
+	D		= 0xA,
+	DornotS		= 0xB,
+	S		= 0xC,
+	notDorS		= 0xD,
+	DorS		= 0xE,
+	F		= 0xF,
+} Fcode;
+
+/*
+ * Miscellany
+ */
+
+extern Point	 add(Point, Point), sub(Point, Point);
+extern Point	 mul(Point, int), div(Point, int);
+extern Rectangle rsubp(Rectangle, Point), raddp(Rectangle, Point), inset(Rectangle, int);
+extern Rectangle rmul(Rectangle, int), rdiv(Rectangle, int);
+extern Rectangle rshift(Rectangle, int), rcanon(Rectangle);
+extern Bitmap*	 balloc(Rectangle, int);
+extern Bitmap*	 ballocnomem(Rectangle, int);
+extern Bitmap*	 brealloc(Bitmap*, Rectangle, int);
+extern Bitmap*	 breallocnomem(Bitmap*, Rectangle, int);
+extern int		bbytewidth(Bitmap*, int*, int*);
+extern void	 bfree(Bitmap*);
+extern void	 bfreemem(Bitmap*);
+extern int	 rectclip(Rectangle*, Rectangle);
+extern void	 binit(void(*)(char*), char*, char*);
+extern void	 binit1(void(*)(char*), char*, char*, int);
+extern void	 bclose(void);
+extern void	 berror(char*);
+extern void	 bitblt(Bitmap*, Point, Bitmap*, Rectangle, Fcode);
+extern int	 bitbltclip(void*);
+extern Font*	 rdfontfile(char*, int);
+extern void	 ffree(Font*);
+extern void	fminldepth(Font*);
+extern Font*	 mkfont(Subfont*, Rune);
+extern Subfont*	 subfalloc(int, int, int, Fontchar*, Bitmap*);
+extern void	 subffree(Subfont*);
+extern int	 cachechars(Font*, char**, ushort*, int, int*);
+extern Point	 string(Bitmap*, Point, Font*, char*, Fcode);
+extern Point	 subfstring(Bitmap*, Point, Subfont*, char*, Fcode);
+extern void	 segment(Bitmap*, Point, Point, int, Fcode);
+extern void	 point(Bitmap*, Point, int, Fcode);
+extern void	 arc(Bitmap*, Point, Point, Point, int, Fcode);
+extern void	 circle(Bitmap*, Point, int, int, Fcode);
+extern void	 disc(Bitmap*, Point, int, int, Fcode);
+extern void	 ellipse(Bitmap*, Point, int, int, int, Fcode);
+extern long	 strwidth(Font*, char*);
+extern void	 agefont(Font*);
+extern int	 loadchar(Font*, Rune, Cacheinfo*, int, int);
+extern Point	 strsize(Font*, char*);
+extern long	 charwidth(Font*, Rune);
+extern void	 texture(Bitmap*, Rectangle, Bitmap*, Fcode);
+extern void	 wrbitmap(Bitmap*, int, int, uchar*);
+extern void	 rdbitmap(Bitmap*, int, int, uchar*);
+extern void	 wrbitmapfile(int, Bitmap*);
+extern Bitmap*	 rdbitmapfile(int);
+extern void	 wrsubfontfile(int, Subfont*);
+extern void	 wrcolmap(Bitmap*, RGB*);
+extern void	 rdcolmap(Bitmap*, RGB*);
+extern Subfont*	 rdsubfontfile(int, Bitmap*);
+extern void	_unpackinfo(Fontchar*, uchar*, int);
+
+extern int	 ptinrect(Point, Rectangle), rectinrect(Rectangle, Rectangle);
+extern int	 rectXrect(Rectangle, Rectangle);
+extern int	 eqpt(Point, Point), eqrect(Rectangle, Rectangle);
+extern void	 border(Bitmap*, Rectangle, int, Fcode);
+extern void	 cursorswitch(Cursor*);
+extern void	 cursorset(Point);
+extern Rectangle bscreenrect(Rectangle*);
+extern void	 bflush(void);
+extern void	 bexit(void);
+extern int	 _clipline(Rectangle, Point*, Point*, Linedesc*);
+extern int	 clipline(Rectangle, Point*, Point*);
+extern int	 clipr(Bitmap*, Rectangle);
+
+extern void	 einit(ulong);
+extern ulong	 estart(ulong, int, int);
+extern ulong	 etimer(ulong, int);
+extern ulong	 event(Event*);
+extern ulong	 eread(ulong, Event*);
+extern Ebuf*	 ebread(Slave*);
+extern Mouse	 emouse(void);
+extern int	 ekbd(void);
+extern int	 ecanread(ulong);
+extern int	 ecanmouse(void);
+extern int	 ecankbd(void);
+extern void	 ereshaped(Rectangle);	/* supplied by user */
+extern int	 menuhit(int, Mouse*, Menu*);
+extern Rectangle getrect(int, Mouse*);
+extern ulong	 rgbpix(Bitmap*, RGB);
+extern int	_gminor(long, Linedesc*);
+
+enum{
+	Emouse		= 1,
+	Ekeyboard	= 2,
+};
+
+enum
+{
+	MAXSLAVE = 32,
+};
+
+#define	Pt(x, y)		((Point){(x), (y)})
+#define	Rect(x1, y1, x2, y2)	((Rectangle){Pt(x1, y1), Pt(x2, y2)})
+#define	Rpt(p1, p2)		((Rectangle){(p1), (p2)})
+
+
+#define	Dx(r)	((r).max.x-(r).min.x)
+#define	Dy(r)	((r).max.y-(r).min.y)
+
+extern	Bitmap	screen;
+extern	Font	*font;
+extern	uchar	_btmp[8192];
+
+extern	int	_mousefd;
+extern	int	_cursorfd;
+
+#define	BGSHORT(p)		(((p)[0]<<0) | ((p)[1]<<8))
+#define	BGLONG(p)		((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16))
+#define	BPSHORT(p, v)		((p)[0]=(v), (p)[1]=((v)>>8))
+#define	BPLONG(p, v)		(BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16))
+
+ulong	*wordaddr(Bitmap*, Point);
+uchar	*byteaddr(Bitmap*, Point);
+int		dfree(Display*);
+int		dwritectl(Display*, char*, int);
+int		dreadctl(Display*, char*, int);
+int		dinfo(Display*, int, int*, Rectangle*);
+void*	dinit(Display*, Bitmap*, int, int);
+int		ddelete(Display*);
+void		dfreemem(Display*);
+int		dreadctl(Display*, char*, int);
+int		dwritectl(Display*, char*, int);
+void	dbound(Display*, Rectangle);
+void	bload(Bitmap*, Rectangle, uchar*);
+ulong	bunload(Bitmap*, Rectangle, uchar*);
+void		drefresh(Display*, Rectangle);
+Display	*dopen(char*, int, DRefresh*);
+Bitmap*	dbitmap(Display*, DRefresh*, int);
+void		dclose(Display*);
+void		dflush(Display*);
+void		_bltinit(void);
+Bitmap*	battach(Bitmap*, int, int);
+int		readmouse(Mouse*);
+int		atomouse(Mouse*, char*, int);
+
+/*
+ * Refresh functions
+ */
+DRefresh	drtexture;
+DRefresh	drbackstore;
-- 
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