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 	Subfont		*defaultsubfont;
203 	Image		*windows;
204 	Image		*screenimage;
205 	int		_isnewdisplay;
206 	struct Mux	*mux;
207 	int		srvfd;
208 	int		dpi;
209 };
210 
211 struct Image
212 {
213 	Display		*display;	/* display holding data */
214 	int		id;		/* id of system-held Image */
215 	Rectangle	r;		/* rectangle in data area, local coords */
216 	Rectangle 	clipr;		/* clipping region */
217 	int		depth;		/* number of bits per pixel */
218 	u32int	chan;
219 	int		repl;		/* flag: data replicates to tile clipr */
220 	Screen		*screen;	/* 0 if not a window */
221 	Image		*next;	/* next in list of windows */
222 };
223 
224 struct RGB
225 {
226 	u32int	red;
227 	u32int	green;
228 	u32int	blue;
229 };
230 
231 /*
232  * Subfonts
233  *
234  * given char c, Subfont *f, Fontchar *i, and Point p, one says
235  *	i = f->info+c;
236  *	void(b, Rect(p.x+i->left, p.y+i->top,
237  *		p.x+i->left+((i+1)->x-i->x), p.y+i->bottom),
238  *		color, f->bits, Pt(i->x, i->top));
239  *	p.x += i->width;
240  * to draw characters in the specified color (itself an Image) in Image b.
241  */
242 
243 struct	Fontchar
244 {
245 	int		x;		/* left edge of bits */
246 	uchar		top;		/* first non-zero scan-line */
247 	uchar		bottom;		/* last non-zero scan-line + 1 */
248 	char		left;		/* offset of baseline */
249 	uchar		width;		/* width of baseline */
250 };
251 
252 struct	Subfont
253 {
254 	char		*name;
255 	short		n;		/* number of chars in font */
256 	uchar		height;		/* height of image */
257 	char		ascent;		/* top of image to baseline */
258 	Fontchar 	*info;		/* n+1 character descriptors */
259 	Image		*bits;		/* of font */
260 	int		ref;
261 };
262 
263 enum
264 {
265 	/* starting values */
266 	LOG2NFCACHE =	6,
267 	NFCACHE =	(1<<LOG2NFCACHE),	/* #chars cached */
268 	NFLOOK =	5,			/* #chars to scan in cache */
269 	NFSUBF =	2,			/* #subfonts to cache */
270 	/* max value */
271 	MAXFCACHE =	1024+NFLOOK,		/* upper limit */
272 	MAXSUBF =	50,			/* generous upper limit */
273 	/* deltas */
274 	DSUBF = 	4,
275 	/* expiry ages */
276 	SUBFAGE	=	10000,
277 	CACHEAGE =	10000
278 };
279 
280 struct Cachefont
281 {
282 	Rune		min;	/* lowest rune value to be taken from subfont */
283 	Rune		max;	/* highest rune value+1 to be taken from subfont */
284 	int		offset;	/* position in subfont of character at min */
285 	char		*name;			/* stored in font */
286 	char		*subfontname;		/* to access subfont */
287 };
288 
289 struct Cacheinfo
290 {
291 	ushort		x;		/* left edge of bits */
292 	uchar		width;		/* width of baseline */
293 	schar		left;		/* offset of baseline */
294 	Rune		value;	/* value of character at this slot in cache */
295 	ushort		age;
296 };
297 
298 struct Cachesubf
299 {
300 	u32int		age;	/* for replacement */
301 	Cachefont	*cf;	/* font info that owns us */
302 	Subfont		*f;	/* attached subfont */
303 };
304 
305 struct Font
306 {
307 	char		*name;
308 	Display		*display;
309 	short		height;	/* max height of image, interline spacing */
310 	short		ascent;	/* top of image to baseline */
311 	short		width;	/* widest so far; used in caching only */	
312 	short		nsub;	/* number of subfonts */
313 	u32int		age;	/* increasing counter; used for LRU */
314 	int		maxdepth;	/* maximum depth of all loaded subfonts */
315 	int		ncache;	/* size of cache */
316 	int		nsubf;	/* size of subfont list */
317 	Cacheinfo	*cache;
318 	Cachesubf	*subf;
319 	Cachefont	**sub;	/* as read from file */
320 	Image		*cacheimage;
321 };
322 
323 #define	Dx(r)	((r).max.x-(r).min.x)
324 #define	Dy(r)	((r).max.y-(r).min.y)
325 
326 /*
327  * Image management
328  */
329 extern Image*	_allocimage(Image*, Display*, Rectangle, u32int, int, u32int, int, int);
330 extern Image*	allocimage(Display*, Rectangle, u32int, int, u32int);
331 extern uchar*	bufimage(Display*, int);
332 extern int	bytesperline(Rectangle, int);
333 extern void	closedisplay(Display*);
334 extern void	drawerror(Display*, char*);
335 extern int	flushimage(Display*, int);
336 extern int	freeimage(Image*);
337 extern int	_freeimage1(Image*);
338 extern int	geninitdraw(char*, void(*)(Display*, char*), char*, char*, char*, int);
339 extern int	initdraw(void(*)(Display*, char*), char*, char*);
340 extern int	newwindow(char*);
341 extern int	loadimage(Image*, Rectangle, uchar*, int);
342 extern int	cloadimage(Image*, Rectangle, uchar*, int);
343 extern int	getwindow(Display*, int);
344 extern int	gengetwindow(Display*, char*, Image**, Screen**, int);
345 extern Image* readimage(Display*, int, int);
346 extern Image* creadimage(Display*, int, int);
347 extern int	unloadimage(Image*, Rectangle, uchar*, int);
348 extern int	wordsperline(Rectangle, int);
349 extern int	writeimage(int, Image*, int);
350 extern Image*	namedimage(Display*, char*);
351 extern int	nameimage(Image*, char*, int);
352 extern Image* allocimagemix(Display*, u32int, u32int);
353 extern int	drawsetlabel(char*);
354 extern int	scalesize(Display*, int);
355 
356 /*
357  * Colors
358  */
359 extern	void	readcolmap(Display*, RGB*);
360 extern	void	writecolmap(Display*, RGB*);
361 extern	u32int	setalpha(u32int, uchar);
362 
363 /*
364  * Windows
365  */
366 extern Screen*	allocscreen(Image*, Image*, int);
367 extern Image*	_allocwindow(Image*, Screen*, Rectangle, int, u32int);
368 extern Image*	allocwindow(Screen*, Rectangle, int, u32int);
369 extern void	bottomnwindows(Image**, int);
370 extern void	bottomwindow(Image*);
371 extern int	freescreen(Screen*);
372 extern Screen*	publicscreen(Display*, int, u32int);
373 extern void	topnwindows(Image**, int);
374 extern void	topwindow(Image*);
375 extern int	originwindow(Image*, Point, Point);
376 
377 /*
378  * Geometry
379  */
380 extern Point		Pt(int, int);
381 extern Rectangle	Rect(int, int, int, int);
382 extern Rectangle	Rpt(Point, Point);
383 extern Point		addpt(Point, Point);
384 extern Point		subpt(Point, Point);
385 extern Point		divpt(Point, int);
386 extern Point		mulpt(Point, int);
387 extern int		eqpt(Point, Point);
388 extern int		eqrect(Rectangle, Rectangle);
389 extern Rectangle	insetrect(Rectangle, int);
390 extern Rectangle	rectaddpt(Rectangle, Point);
391 extern Rectangle	rectsubpt(Rectangle, Point);
392 extern Rectangle	canonrect(Rectangle);
393 extern int		rectXrect(Rectangle, Rectangle);
394 extern int		rectinrect(Rectangle, Rectangle);
395 extern void		combinerect(Rectangle*, Rectangle);
396 extern int		rectclip(Rectangle*, Rectangle);
397 extern int		ptinrect(Point, Rectangle);
398 extern void		replclipr(Image*, int, Rectangle);
399 extern int		drawreplxy(int, int, int);	/* used to be drawsetxy */
400 extern Point	drawrepl(Rectangle, Point);
401 extern int		rgb2cmap(int, int, int);
402 extern int		cmap2rgb(int);
403 extern int		cmap2rgba(int);
404 extern void		icossin(int, int*, int*);
405 extern void		icossin2(int, int, int*, int*);
406 
407 /*
408  * Graphics
409  */
410 extern void	draw(Image*, Rectangle, Image*, Image*, Point);
411 extern void	drawop(Image*, Rectangle, Image*, Image*, Point, Drawop);
412 extern void	gendraw(Image*, Rectangle, Image*, Point, Image*, Point);
413 extern void	gendrawop(Image*, Rectangle, Image*, Point, Image*, Point, Drawop);
414 extern void	line(Image*, Point, Point, int, int, int, Image*, Point);
415 extern void	lineop(Image*, Point, Point, int, int, int, Image*, Point, Drawop);
416 extern void	poly(Image*, Point*, int, int, int, int, Image*, Point);
417 extern void	polyop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
418 extern void	fillpoly(Image*, Point*, int, int, Image*, Point);
419 extern void	fillpolyop(Image*, Point*, int, int, Image*, Point, Drawop);
420 extern Point	string(Image*, Point, Image*, Point, Font*, char*);
421 extern Point	stringop(Image*, Point, Image*, Point, Font*, char*, Drawop);
422 extern Point	stringn(Image*, Point, Image*, Point, Font*, char*, int);
423 extern Point	stringnop(Image*, Point, Image*, Point, Font*, char*, int, Drawop);
424 extern Point	runestring(Image*, Point, Image*, Point, Font*, Rune*);
425 extern Point	runestringop(Image*, Point, Image*, Point, Font*, Rune*, Drawop);
426 extern Point	runestringn(Image*, Point, Image*, Point, Font*, Rune*, int);
427 extern Point	runestringnop(Image*, Point, Image*, Point, Font*, Rune*, int, Drawop);
428 extern Point	stringbg(Image*, Point, Image*, Point, Font*, char*, Image*, Point);
429 extern Point	stringbgop(Image*, Point, Image*, Point, Font*, char*, Image*, Point, Drawop);
430 extern Point	stringnbg(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point);
431 extern Point	stringnbgop(Image*, Point, Image*, Point, Font*, char*, int, Image*, Point, Drawop);
432 extern Point	runestringbg(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point);
433 extern Point	runestringbgop(Image*, Point, Image*, Point, Font*, Rune*, Image*, Point, Drawop);
434 extern Point	runestringnbg(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point);
435 extern Point	runestringnbgop(Image*, Point, Image*, Point, Font*, Rune*, int, Image*, Point, Drawop);
436 extern Point	_string(Image*, Point, Image*, Point, Font*, char*, Rune*, int, Rectangle, Image*, Point, Drawop);
437 extern Point	stringsubfont(Image*, Point, Image*, Subfont*, char*);
438 extern int		bezier(Image*, Point, Point, Point, Point, int, int, int, Image*, Point);
439 extern int		bezierop(Image*, Point, Point, Point, Point, int, int, int, Image*, Point, Drawop);
440 extern int		bezspline(Image*, Point*, int, int, int, int, Image*, Point);
441 extern int		bezsplineop(Image*, Point*, int, int, int, int, Image*, Point, Drawop);
442 extern int		bezsplinepts(Point*, int, Point**);
443 extern int		fillbezier(Image*, Point, Point, Point, Point, int, Image*, Point);
444 extern int		fillbezierop(Image*, Point, Point, Point, Point, int, Image*, Point, Drawop);
445 extern int		fillbezspline(Image*, Point*, int, int, Image*, Point);
446 extern int		fillbezsplineop(Image*, Point*, int, int, Image*, Point, Drawop);
447 extern void	ellipse(Image*, Point, int, int, int, Image*, Point);
448 extern void	ellipseop(Image*, Point, int, int, int, Image*, Point, Drawop);
449 extern void	fillellipse(Image*, Point, int, int, Image*, Point);
450 extern void	fillellipseop(Image*, Point, int, int, Image*, Point, Drawop);
451 extern void	arc(Image*, Point, int, int, int, Image*, Point, int, int);
452 extern void	arcop(Image*, Point, int, int, int, Image*, Point, int, int, Drawop);
453 extern void	fillarc(Image*, Point, int, int, Image*, Point, int, int);
454 extern void	fillarcop(Image*, Point, int, int, Image*, Point, int, int, Drawop);
455 extern void	border(Image*, Rectangle, int, Image*, Point);
456 extern void	borderop(Image*, Rectangle, int, Image*, Point, Drawop);
457 
458 /*
459  * Font management
460  */
461 extern Font*	openfont(Display*, char*);
462 extern Font*	buildfont(Display*, char*, char*);
463 extern void	freefont(Font*);
464 extern Font*	mkfont(Subfont*, Rune);
465 extern int	cachechars(Font*, char**, Rune**, ushort*, int, int*, char**);
466 extern void	agefont(Font*);
467 extern Subfont*	allocsubfont(char*, int, int, int, Fontchar*, Image*);
468 extern Subfont*	lookupsubfont(Display*, char*);
469 extern void	installsubfont(char*, Subfont*);
470 extern void	uninstallsubfont(Subfont*);
471 extern void	freesubfont(Subfont*);
472 extern Subfont*	readsubfont(Display*, char*, int, int);
473 extern Subfont*	readsubfonti(Display*, char*, int, Image*, int);
474 extern int	writesubfont(int, Subfont*);
475 extern void	_unpackinfo(Fontchar*, uchar*, int);
476 extern Point	stringsize(Font*, char*);
477 extern int	stringwidth(Font*, char*);
478 extern int	stringnwidth(Font*, char*, int);
479 extern Point	runestringsize(Font*, Rune*);
480 extern int	runestringwidth(Font*, Rune*);
481 extern int	runestringnwidth(Font*, Rune*, int);
482 extern Point	strsubfontwidth(Subfont*, char*);
483 extern int	loadchar(Font*, Rune, Cacheinfo*, int, int, char**);
484 extern char*	subfontname(char*, char*, int);
485 extern Subfont*	_getsubfont(Display*, char*);
486 extern Subfont*	getdefont(Display*);
487 extern void		lockdisplay(Display*);
488 extern void	unlockdisplay(Display*);
489 extern int		drawlsetrefresh(u32int, int, void*, void*);
490 
491 /*
492  * Predefined 
493  */
494 extern	uchar	defontdata[];
495 extern	int		sizeofdefont;
496 extern	Point		ZP;
497 extern	Rectangle	ZR;
498 
499 /*
500  * Set up by initdraw()
501  */
502 extern	Display	*display;
503 extern	Font		*font;
504 extern	Image	*screen;
505 extern	Screen	*_screen;
506 extern	int	_cursorfd;
507 extern	int	_drawdebug;	/* set to 1 to see errors from flushimage */
508 extern	void	_setdrawop(Display*, Drawop);
509 extern	Display	*_initdisplay(void(*)(Display*,char*), char*);
510 
511 #define	BGSHORT(p)		(((p)[0]<<0) | ((p)[1]<<8))
512 #define	BGLONG(p)		((BGSHORT(p)<<0) | (BGSHORT(p+2)<<16))
513 #define	BPSHORT(p, v)		((p)[0]=(v), (p)[1]=((v)>>8))
514 #define	BPLONG(p, v)		(BPSHORT(p, (v)), BPSHORT(p+2, (v)>>16))
515 
516 /*
517  * Compressed image file parameters and helper routines
518  */
519 #define	NMATCH	3		/* shortest match possible */
520 #define	NRUN	(NMATCH+31)	/* longest match possible */
521 #define	NMEM	1024		/* window size */
522 #define	NDUMP	128		/* maximum length of dump */
523 #define	NCBLOCK	6000		/* size of compressed blocks */
524 extern	void	_twiddlecompressed(uchar*, int);
525 extern	int	_compblocksize(Rectangle, int);
526 
527 /* XXX backwards helps; should go */
528 extern	u32int	drawld2chan[];
529 extern	void		drawsetdebug(int);
530 
531 /*
532  * Snarf buffer
533  */
534 enum
535 {
536 	SnarfSize = 64*1024
537 };
538 char *getsnarf(void);
539 void putsnarf(char*);
540 
541 void drawtopwindow(void);
542 void drawresizewindow(Rectangle);
543 extern char *winsize;
544 
545 int	mousescrollsize(int);
546 
547 /*
548  * RPC interface to draw server.
549  */
550 struct Mouse;
551 struct Cursor;
552 int		_displaybouncemouse(Display *d, struct Mouse *m);
553 int		_displayconnect(Display *d);
554 int		_displaycursor(Display *d, struct Cursor *c);
555 int		_displayinit(Display *d, char *label, char *winsize);
556 int		_displaylabel(Display *d, char *label);
557 int		_displaymoveto(Display *d, Point p);
558 int		_displaymux(Display *d);
559 int		_displayrddraw(Display *d, void *v, int n);
560 int		_displayrdkbd(Display *d, Rune *r);
561 int		_displayrdmouse(Display *d, struct Mouse *m, int *resized);
562 char*		_displayrdsnarf(Display *d);
563 int		_displaywrdraw(Display *d, void *v, int n);
564 int		_displaywrsnarf(Display *d, char *snarf);
565 int		_displaytop(Display *d);
566 int		_displayresize(Display *d, Rectangle rect);
567 
568 #if defined(__cplusplus)
569 }
570 #endif
571 #endif