1 #ifndef _DRAW_H_
2 #define _DRAW_H_ 1
3 #if defined(__cplusplus)
4 extern "C" { 
5 #endif
6 
7 AUTOLIB(draw)
8 #ifdef __APPLE__
9 AUTOFRAMEWORK(Carbon)
10 #endif
11 
12 typedef struct	Cachefont Cachefont;
13 typedef struct	Cacheinfo Cacheinfo;
14 typedef struct	Cachesubf Cachesubf;
15 typedef struct	Display Display;
16 typedef struct	Font Font;
17 typedef struct	Fontchar Fontchar;
18 typedef struct	Image Image;
19 typedef struct	Mouse Mouse;
20 typedef struct	Point Point;
21 typedef struct	Rectangle Rectangle;
22 typedef struct	RGB RGB;
23 typedef struct	Screen Screen;
24 typedef struct	Subfont Subfont;
25 
26 struct Mux;
27 
28 extern	int	Rfmt(Fmt*);
29 extern	int	Pfmt(Fmt*);
30 
31 #define 	DOpaque		0xFFFFFFFF
32 #define 	DTransparent	0x00000000		/* only useful for allocimage memfillcolor */
33 #define 	DBlack		0x000000FF
34 #define 	DWhite		0xFFFFFFFF
35 #define 	DRed		0xFF0000FF
36 #define 	DGreen		0x00FF00FF
37 #define 	DBlue		0x0000FFFF
38 #define 	DCyan		0x00FFFFFF
39 #define 	DMagenta		0xFF00FFFF
40 #define 	DYellow		0xFFFF00FF
41 #define 	DPaleyellow	0xFFFFAAFF
42 #define 	DDarkyellow	0xEEEE9EFF
43 #define 	DDarkgreen	0x448844FF
44 #define 	DPalegreen	0xAAFFAAFF
45 #define 	DMedgreen	0x88CC88FF
46 #define 	DDarkblue	0x000055FF
47 #define 	DPalebluegreen 0xAAFFFFFF
48 #define 	DPaleblue		0x0000BBFF
49 #define 	DBluegreen	0x008888FF
50 #define 	DGreygreen	0x55AAAAFF
51 #define 	DPalegreygreen	0x9EEEEEFF
52 #define 	DYellowgreen	0x99994CFF
53 #define 	DMedblue		0x000099FF
54 #define 	DGreyblue	0x005DBBFF
55 #define 	DPalegreyblue	0x4993DDFF
56 #define 	DPurpleblue	0x8888CCFF
57 
58 #define 	DNotacolor	0xFFFFFF00
59 #define 	DNofill		DNotacolor
60 
61 enum
62 {
63 	Displaybufsize	= 8000,
64 	ICOSSCALE	= 1024,
65 	Borderwidth	= 4,
66 	DefaultDPI	= 133
67 };
68 
69 enum
70 {
71 	/* refresh methods */
72 	Refbackup	= 0,
73 	Refnone		= 1,
74 	Refmesg		= 2
75 };
76 #define	NOREFRESH	((void*)-1)
77 
78 enum
79 {
80 	/* line ends */
81 	Endsquare	= 0,
82 	Enddisc		= 1,
83 	Endarrow	= 2,
84 	Endmask		= 0x1F
85 };
86 
87 #define	ARROW(a, b, c)	(Endarrow|((a)<<5)|((b)<<14)|((c)<<23))
88 
89 typedef enum
90 {
91 	/* Porter-Duff compositing operators */
92 	Clear	= 0,
93 
94 	SinD	= 8,
95 	DinS	= 4,
96 	SoutD	= 2,
97 	DoutS	= 1,
98 
99 	S		= SinD|SoutD,
100 	SoverD	= SinD|SoutD|DoutS,
101 	SatopD	= SinD|DoutS,
102 	SxorD	= SoutD|DoutS,
103 
104 	D		= DinS|DoutS,
105 	DoverS	= DinS|DoutS|SoutD,
106 	DatopS	= DinS|SoutD,
107 	DxorS	= DoutS|SoutD,	/* == SxorD */
108 
109 	Ncomp = 12
110 } Drawop;
111 
112 /*
113  * image channel descriptors 
114  */
115 enum {
116 	CRed = 0,
117 	CGreen,
118 	CBlue,
119 	CGrey,
120 	CAlpha,
121 	CMap,
122 	CIgnore,
123 	NChan
124 };
125 
126 #define __DC(type, nbits)	((((type)&15)<<4)|((nbits)&15))
127 #define CHAN1(a,b)	__DC(a,b)
128 #define CHAN2(a,b,c,d)	(CHAN1((a),(b))<<8|__DC((c),(d)))
129 #define CHAN3(a,b,c,d,e,f)	(CHAN2((a),(b),(c),(d))<<8|__DC((e),(f)))
130 #define CHAN4(a,b,c,d,e,f,g,h)	(CHAN3((a),(b),(c),(d),(e),(f))<<8|__DC((g),(h)))
131 
132 #define NBITS(c) ((c)&15)
133 #define TYPE(c) (((c)>>4)&15)
134 
135 enum {
136 	GREY1	= CHAN1(CGrey, 1),
137 	GREY2	= CHAN1(CGrey, 2),
138 	GREY4	= CHAN1(CGrey, 4),
139 	GREY8	= CHAN1(CGrey, 8),
140 	CMAP8	= CHAN1(CMap, 8),
141 	RGB15	= CHAN4(CIgnore, 1, CRed, 5, CGreen, 5, CBlue, 5),
142 	RGB16	= CHAN3(CRed, 5, CGreen, 6, CBlue, 5),
143 	RGB24	= CHAN3(CRed, 8, CGreen, 8, CBlue, 8),
144 	BGR24	= CHAN3(CBlue, 8, CGreen, 8, CRed, 8),
145 	RGBA32	= CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CAlpha, 8),
146 	ARGB32	= CHAN4(CAlpha, 8, CRed, 8, CGreen, 8, CBlue, 8),	/* stupid VGAs */
147 	ABGR32	= CHAN4(CAlpha, 8, CBlue, 8, CGreen, 8, CRed, 8),
148 	XRGB32  = CHAN4(CIgnore, 8, CRed, 8, CGreen, 8, CBlue, 8),
149 	XBGR32  = CHAN4(CIgnore, 8, CBlue, 8, CGreen, 8, CRed, 8)
150 };
151 
152 extern	char*	chantostr(char*, u32int);
153 extern	u32int	strtochan(char*);
154 extern	int		chantodepth(u32int);
155 
156 struct	Point
157 {
158 	int	x;
159 	int	y;
160 };
161 
162 struct Rectangle
163 {
164 	Point	min;
165 	Point	max;
166 };
167 
168 typedef void	(*Reffn)(Image*, Rectangle, void*);
169 
170 struct Screen
171 {
172 	Display	*display;	/* display holding data */
173 	int	id;		/* id of system-held Screen */
174 	Image	*image;		/* unused; for reference only */
175 	Image	*fill;		/* color to paint behind windows */
176 };
177 
178 struct Display
179 {
180 	QLock		qlock;
181 	int		locking;	/*program is using lockdisplay */
182 	int		dirno;
183 	int		imageid;
184 	int		local;
185 	void		(*error)(Display*, char*);
186 	char		*devdir;
187 	char		*windir;
188 	char		oldlabel[64];
189 	u32int		dataqid;
190 	Image		*image;
191 	Image		*white;
192 	Image		*black;
193 	Image		*opaque;
194 	Image		*transparent;
195 	uchar		*buf;
196 	int		bufsize;
197 	uchar		*bufp;
198 	uchar		*obuf;
199 	int		obufsize;
200 	uchar		*obufp;
201 	Font		*defaultfont;
202 	Image		*windows;
203 	Image		*screenimage;
204 	int		_isnewdisplay;
205 	struct Mux	*mux;
206 	int		srvfd;
207 	int		dpi;
208 	
209 	Font	*firstfont;
210 	Font	*lastfont;
211 };
212 
213 struct Image
214 {
215 	Display		*display;	/* display holding data */
216 	int		id;		/* id of system-held Image */
217 	Rectangle	r;		/* rectangle in data area, local coords */
218 	Rectangle 	clipr;		/* clipping region */
219 	int		depth;		/* number of bits per pixel */
220 	u32int	chan;
221 	int		repl;		/* flag: data replicates to tile clipr */
222 	Screen		*screen;	/* 0 if not a window */
223 	Image		*next;	/* next in list of windows */
224 };
225 
226 struct RGB
227 {
228 	u32int	red;
229 	u32int	green;
230 	u32int	blue;
231 };
232 
233 /*
234  * Subfonts
235  *
236  * given char c, Subfont *f, Fontchar *i, and Point p, one says
237  *	i = f->info+c;
238  *	void(b, Rect(p.x+i->left, p.y+i->top,
239  *		p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
240  *		color, f->bits, Pt(i->x, i->top));
241  *	p.x += i->width;
242  * to draw characters in the specified color (itself an Image) in Image b.
243  */
244 
245 struct	Fontchar
246 {
247 	int		x;		/* left edge of bits */
248 	uchar		top;		/* first non-zero scan-line */
249 	uchar		bottom;		/* last non-zero scan-line + 1 */
250 	char		left;		/* offset of baseline */
251 	uchar		width;		/* width of baseline */
252 };
253 
254 struct	Subfont
255 {
256 	char		*name;
257 	short		n;		/* number of chars in font */
258 	uchar		height;		/* height of image */
259 	char		ascent;		/* top of image to baseline */
260 	Fontchar 	*info;		/* n+1 character descriptors */
261 	Image		*bits;		/* of font */
262 	int		ref;
263 };
264 
265 enum
266 {
267 	/* starting values */
268 	LOG2NFCACHE =	6,
269 	NFCACHE =	(1<<LOG2NFCACHE),	/* #chars cached */
270 	NFLOOK =	5,			/* #chars to scan in cache */
271 	NFSUBF =	2,			/* #subfonts to cache */
272 	/* max value */
273 	MAXFCACHE =	1024+NFLOOK,		/* upper limit */
274 	MAXSUBF =	50,			/* generous upper limit */
275 	/* deltas */
276 	DSUBF = 	4,
277 	/* expiry ages */
278 	SUBFAGE	=	10000,
279 	CACHEAGE =	10000
280 };
281 
282 struct Cachefont
283 {
284 	Rune		min;	/* lowest rune value to be taken from subfont */
285 	Rune		max;	/* highest rune value+1 to be taken from subfont */
286 	int		offset;	/* position in subfont of character at min */
287 	char		*name;			/* stored in font */
288 	char		*subfontname;		/* to access subfont */
289 };
290 
291 struct Cacheinfo
292 {
293 	int		x;		/* left edge of bits */
294 	uchar		width;		/* width of baseline */
295 	schar		left;		/* offset of baseline */
296 	Rune		value;	/* value of character at this slot in cache */
297 	ushort		age;
298 };
299 
300 struct Cachesubf
301 {
302 	u32int		age;	/* for replacement */
303 	Cachefont	*cf;	/* font info that owns us */
304 	Subfont		*f;	/* attached subfont */
305 };
306 
307 struct Font
308 {
309 	char		*name;
310 	char		*namespec;
311 	Display		*display;
312 	short		height;	/* max height of image, interline spacing */
313 	short		ascent;	/* top of image to baseline */
314 	short		width;	/* widest so far; used in caching only */
315 	int		nsub;	/* number of subfonts */
316 	u32int		age;	/* increasing counter; used for LRU */
317 	int		maxdepth;	/* maximum depth of all loaded subfonts */
318 	int		ncache;	/* size of cache */
319 	int		nsubf;	/* size of subfont list */
320 	int		scale;	/* pixel scaling to apply */
321 	Cacheinfo	*cache;
322 	Cachesubf	*subf;
323 	Cachefont	**sub;	/* as read from file */
324 	Image		*cacheimage;
325 	
326 	/* doubly linked list of fonts known to display */
327 	int ondisplaylist;
328 	Font *next;
329 	Font *prev;
330 	
331 	/* on hi-dpi systems, one of these is set to f and the other is the other-dpi version of f */
332 	Font	*lodpi;
333 	Font	*hidpi;
334 };
335 
336 #define	Dx(r)	((r).max.x-(r).min.x)
337 #define	Dy(r)	((r).max.y-(r).min.y)
338 
339 /*
340  * Image management
341  */
342 extern Image*	_allocimage(Image*, Display*, Rectangle, u32int, int, u32int, int, int);
343 extern Image*	allocimage(Display*, Rectangle, u32int, int, u32int);
344 extern uchar*	bufimage(Display*, int);
345 extern int	bytesperline(Rectangle, int);
346 extern void	closedisplay(Display*);
347 extern void	drawerror(Display*, char*);
348 extern int	flushimage(Display*, int);
349 extern int	freeimage(Image*);
350 extern int	_freeimage1(Image*);
351 extern int	geninitdraw(char*, void(*)(Display*, char*), char*, char*, char*, int);
352 extern int	initdraw(void(*)(Display*, char*), char*, char*);
353 extern int	newwindow(char*);
354 extern int	loadimage(Image*, Rectangle, uchar*, int);
355 extern int	cloadimage(Image*, Rectangle, uchar*, int);
356 extern int	getwindow(Display*, int);
357 extern int	gengetwindow(Display*, char*, Image**, Screen**, int);
358 extern Image* readimage(Display*, int, int);
359 extern Image* creadimage(Display*, int, int);
360 extern int	unloadimage(Image*, Rectangle, uchar*, int);
361 extern int	wordsperline(Rectangle, int);
362 extern int	writeimage(int, Image*, int);
363 extern Image*	namedimage(Display*, char*);
364 extern int	nameimage(Image*, char*, int);
365 extern Image* allocimagemix(Display*, u32int, u32int);
366 extern int	drawsetlabel(char*);
367 extern int	scalesize(Display*, int);
368 
369 /*
370  * Colors
371  */
372 extern	void	readcolmap(Display*, RGB*);
373 extern	void	writecolmap(Display*, RGB*);
374 extern	u32int	setalpha(u32int, uchar);
375 
376 /*
377  * Windows
378  */
379 extern Screen*	allocscreen(Image*, Image*, int);
380 extern Image*	_allocwindow(Image*, Screen*, Rectangle, int, u32int);
381 extern Image*	allocwindow(Screen*, Rectangle, int, u32int);
382 extern void	bottomnwindows(Image**, int);
383 extern void	bottomwindow(Image*);
384 extern int	freescreen(Screen*);
385 extern Screen*	publicscreen(Display*, int, u32int);
386 extern void	topnwindows(Image**, int);
387 extern void	topwindow(Image*);
388 extern int	originwindow(Image*, Point, Point);
389 
390 /*
391  * Geometry
392  */
393 extern Point		Pt(int, int);
394 extern Rectangle	Rect(int, int, int, int);
395 extern Rectangle	Rpt(Point, Point);
396 extern Point		addpt(Point, Point);
397 extern Point		subpt(Point, Point);
398 extern Point		divpt(Point, int);
399 extern Point		mulpt(Point, int);
400 extern int		eqpt(Point, Point);
401 extern int		eqrect(Rectangle, Rectangle);
402 extern Rectangle	insetrect(Rectangle, int);
403 extern Rectangle	rectaddpt(Rectangle, Point);
404 extern Rectangle	rectsubpt(Rectangle, Point);
405 extern Rectangle	canonrect(Rectangle);
406 extern int		rectXrect(Rectangle, Rectangle);
407 extern int		rectinrect(Rectangle, Rectangle);
408 extern void		combinerect(Rectangle*, Rectangle);
409 extern int		rectclip(Rectangle*, Rectangle);
410 extern int		ptinrect(Point, Rectangle);
411 extern void		replclipr(Image*, int, Rectangle);
412 extern int		drawreplxy(int, int, int);	/* used to be drawsetxy */
413 extern Point	drawrepl(Rectangle, Point);
414 extern int		rgb2cmap(int, int, int);
415 extern int		cmap2rgb(int);
416 extern int		cmap2rgba(int);
417 extern void		icossin(int, int*, int*);
418 extern void		icossin2(int, int, int*, int*);
419 
420 /*
421  * Graphics
422  */
423 extern void	draw(Image*, Rectangle, Image*, Image*, Point);
424 extern void	drawop(Image*, Rectangle, Image*, Image*, Point, Drawop);
425 extern void	gendraw(Image*, Rectangle, Image*, Point, Image*, Point);
426 extern void	gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop);
427 extern void	line(Image*, Point, Point, int, int, int, Image*, Point);
428 extern void	lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop);
429 extern void	poly(Image*, Point*, int, int, int, int, Image*, Point);
430 extern void	polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
431 extern void	fillpoly(Image*, Point*, int, int, Image*, Point);
432 extern void	fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop);
433 extern Point	string(Image*, Point, Image*, Point, Font*, char*);
434 extern Point	stringop(Image*, Point, Image*, Point, Font*, char*, Drawop);
435 extern Point	stringn(Image*, Point, Image*, Point, Font*, char*, int);
436 extern Point	stringnop(Image*, Point, Image*, Point, Font*, char*, int, Drawop);
437 extern Point	runestring(Image*, Point, Image*, Point, Font*, Rune*);
438 extern Point	runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop);
439 extern Point	runestringn(Image*, Point, Image*, Point, Font*, Rune*, int);
440 extern Point	runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop);
441 extern Point	stringbg(Image*, Point, Image*, Point, Font*, char*, Image*, Point);
442 extern Point	stringbgop(Image*, Point, Image*, Point, Font*, char*, Image*, Point, Drawop);
443 extern Point	stringnbg(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point);
444 extern Point	stringnbgop(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point, Drawop);
445 extern Point	runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point);
446 extern Point	runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop);
447 extern Point	runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point);
448 extern Point	runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop);
449 extern Point	_string(Image*, Point, Image*, Point, Font*, char*, Rune*, int, Rectangle, Image*, Point, Drawop);
450 extern Point	stringsubfont(Image*, Point, Image*, Subfont*, char*);
451 extern int		bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point);
452 extern int		bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop);
453 extern int		bezspline(Image*, Point*, int, int, int, int, Image*, Point);
454 extern int		bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
455 extern int		bezsplinepts(Point*, int, Point**);
456 extern int		fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point);
457 extern int		fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop);
458 extern int		fillbezspline(Image*, Point*, int, int, Image*, Point);
459 extern int		fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop);
460 extern void	ellipse(Image*, Point, int, int, int, Image*, Point);
461 extern void	ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop);
462 extern void	fillellipse(Image*, Point, int, int, Image*, Point);
463 extern void	fillellipseop(Image*, Point, int, int, Image*, Point, Drawop);
464 extern void	arc(Image*, Point, int, int, int, Image*, Point, int, int);
465 extern void	arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop);
466 extern void	fillarc(Image*, Point, int, int, Image*, Point, int, int);
467 extern void	fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop);
468 extern void	border(Image*, Rectangle, int, Image*, Point);
469 extern void	borderop(Image*, Rectangle, int, Image*, Point, Drawop);
470 
471 /*
472  * Font management
473  */
474 extern Font*	openfont(Display*, char*);
475 extern int	parsefontscale(char*, char**);
476 extern Font*	buildfont(Display*, char*, char*);
477 extern void	freefont(Font*);
478 extern Font*	mkfont(Subfont*, Rune);
479 extern int	cachechars(Font*, char**, Rune**, ushort*, int, int*, char**);
480 extern void	agefont(Font*);
481 extern Subfont*	allocsubfont(char*, int, int, int, Fontchar*, Image*);
482 extern Subfont*	lookupsubfont(Display*, char*);
483 extern void	installsubfont(char*, Subfont*);
484 extern void	uninstallsubfont(Subfont*);
485 extern void	freesubfont(Subfont*);
486 extern Subfont*	readsubfont(Display*, char*, int, int);
487 extern Subfont*	readsubfonti(Display*, char*, int, Image*, int);
488 extern int	writesubfont(int, Subfont*);
489 extern void	_unpackinfo(Fontchar*, uchar*, int);
490 extern Point	stringsize(Font*, char*);
491 extern int	stringwidth(Font*, char*);
492 extern int	stringnwidth(Font*, char*, int);
493 extern Point	runestringsize(Font*, Rune*);
494 extern int	runestringwidth(Font*, Rune*);
495 extern int	runestringnwidth(Font*, Rune*, int);
496 extern Point	strsubfontwidth(Subfont*, char*);
497 extern int	loadchar(Font*, Rune, Cacheinfo*, int, int, char**);
498 extern char*	subfontname(char*, char*, int);
499 extern Subfont*	_getsubfont(Display*, char*);
500 extern void		lockdisplay(Display*);
501 extern void	unlockdisplay(Display*);
502 extern int		drawlsetrefresh(u32int, int, void*, void*);
503 extern void	loadhidpi(Font*);
504 extern void	swapfont(Font*, Font**, Font**);
505 
506 /*
507  * Predefined 
508  */
509 extern	Point		ZP;
510 extern	Rectangle	ZR;
511 
512 /*
513  * Set up by initdraw()
514  */
515 extern	Display	*display;
516 extern	Font		*font;
517 extern	Image	*screen;
518 extern	Screen	*_screen;
519 extern	int	drawmousemask; /* set bits to disable receiving those buttons */
520 extern	int	_cursorfd;
521 extern	int	_drawdebug;	/* set to 1 to see errors from flushimage */
522 extern	void	_setdrawop(Display*, Drawop);
523 extern	Display	*_initdisplay(void(*)(Display*,char*), char*);
524 
525 extern	void	needdisplay(void); /* call instead of initdraw to get (null) variable linked in */
526 
527 #define	BGSHORT(p)		(((p)[0]<<0) | ((p)[1]<<8))
528 #define	BGLONG(p)		((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16))
529 #define	BPSHORT(p, v)		((p)[0]=(v), (p)[1]=((v)>>8))
530 #define	BPLONG(p, v)		(BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16))
531 
532 /*
533  * Compressed image file parameters and helper routines
534  */
535 #define	NMATCH	3		/* shortest match possible */
536 #define	NRUN	(NMATCH+31)	/* longest match possible */
537 #define	NMEM	1024		/* window size */
538 #define	NDUMP	128		/* maximum length of dump */
539 #define	NCBLOCK	6000		/* size of compressed blocks */
540 extern	void	_twiddlecompressed(uchar*, int);
541 extern	int	_compblocksize(Rectangle, int);
542 
543 /* XXX backwards helps; should go */
544 extern	u32int	drawld2chan[];
545 extern	void		drawsetdebug(int);
546 
547 /*
548  * Snarf buffer
549  */
550 enum
551 {
552 	SnarfSize = 64*1024
553 };
554 char *getsnarf(void);
555 void putsnarf(char*);
556 
557 void drawtopwindow(void);
558 void drawresizewindow(Rectangle);
559 extern char *winsize;
560 
561 int	mousescrollsize(int);
562 
563 /*
564  * RPC interface to draw server.
565  */
566 struct Mouse;
567 struct Cursor;
568 struct Cursor2;
569 int		_displaybouncemouse(Display *d, struct Mouse *m);
570 int		_displayconnect(Display *d);
571 int		_displaycursor(Display *d, struct Cursor *c, struct Cursor2 *c2);
572 int		_displayinit(Display *d, char *label, char *winsize);
573 int		_displaylabel(Display *d, char *label);
574 int		_displaymoveto(Display *d, Point p);
575 int		_displaymux(Display *d);
576 int		_displayrddraw(Display *d, void *v, int n);
577 int		_displayrdkbd(Display *d, Rune *r);
578 int		_displayrdmouse(Display *d, struct Mouse *m, int *resized);
579 char*		_displayrdsnarf(Display *d);
580 int		_displaywrdraw(Display *d, void *v, int n);
581 int		_displaywrsnarf(Display *d, char *snarf);
582 int		_displaytop(Display *d);
583 int		_displayresize(Display *d, Rectangle rect);
584 
585 #if defined(__cplusplus)
586 }
587 #endif
588 #endif