/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <draw.h>#include <thread.h>#include <mouse.h>#include <keyboard.h>#include <control.h> typedef struct Radio Radio; struct Radio{	Control;	int		value;	int		lastbut;	Control	**buttons;	int		nbuttons;	char		*eventstr;}; enum{	EAdd,	EButton,	EFocus,	EFormat,	EHide,	ERect,	EReveal,	EShow,	ESize,	EValue,}; static char *cmds[] = {	[EAdd] =		"add",	[EButton] =	"button",	[EFocus] = 	"focus",	[EFormat] = 	"format",	[EHide] =		"hide",	[ERect] =		"rect",	[EReveal] =	"reveal",	[EShow] =		"show",	[ESize] =		"size",	[EValue] =		"value",	nil}; static void	radioshow(Radio*);static void	radiofree(Radio*); static voidradiomouse(Control *c, Mouse *m){	Radio *r;	int i; 	r = (Radio*)c;	for(i=0; i<r->nbuttons; i++)		if(ptinrect(m->xy, r->buttons[i]->rect) && r->buttons[i]->mouse){			(r->buttons[i]->mouse)(r->buttons[i], m);			break;		}} static voidradiofree(Radio*){} static voidradioshow(Radio *r){	int i; 	if (r->hidden)		return;	for(i=0; i<r->nbuttons; i++){		_ctlprint(r->buttons[i], "value %d", (r->value==i));		_ctlprint(r->buttons[i], "show");	}} static voidradioctl(Control *c, CParse *cp){	int cmd, i;	Rectangle rect;	Radio *r;	char fmt[256]; 	r = (Radio*)c; 	cmd = _ctllookup(cp->args[0], cmds, nelem(cmds));	switch(cmd){	default:		ctlerror("%q: unrecognized message '%s'", r->name, cp->str);		break;	case EAdd:		_ctlargcount(r, cp, 2);		c = controlcalled(cp->args[1]);		if(c == nil)			ctlerror("%q: can't add %s: %r", r->name, cp->args[1]);		snprint(fmt, sizeof fmt, "%%q: %q button %%d", r->name);		_ctlprint(c, "format %q", fmt);		controlwire(c, "event", c->controlset->ctl);		r->buttons = ctlrealloc(r->buttons, (r->nbuttons+1)*sizeof(Control*));		r->buttons[r->nbuttons] = c;		r->nbuttons++;		r->value = -1;		radioshow(r);		break;	case EButton:		if (cp->sender == nil)			ctlerror("%q: senderless buttonevent: %q", r->name, cp->str);		c = controlcalled(cp->sender);		for(i=0; i<r->nbuttons; i++)			if (c == r->buttons[i])				break;		if (i == r->nbuttons)			ctlerror("%q: not my event: %q", r->name, cp->str);		if(cp->iargs[1] == 0){			/* button was turned off; turn it back on */			_ctlprint(c, "value 1");		}else{			r->value = i;			chanprint(r->event, r->format, r->name, i);			radioshow(r);		}		break;	case EFormat:		_ctlargcount(r, cp, 2);		r->format = ctlstrdup(cp->args[1]);		break;	case EHide:		_ctlargcount(r, cp, 1);		r->hidden = 1;		break;	case EFocus:		/* ignore focus change */		break;	case ERect:		_ctlargcount(r, cp, 5);		rect.min.x = cp->iargs[1];		rect.min.y = cp->iargs[2];		rect.max.x = cp->iargs[3];		rect.max.y = cp->iargs[4];		r->rect = rect;		break;	case EReveal:		_ctlargcount(r, cp, 1);		r->hidden = 0;		radioshow(r);		break;	case EShow:		_ctlargcount(r, cp, 1);		radioshow(r);		break;	case ESize:		if (cp->nargs == 3)			rect.max = Pt(0x7fffffff, 0x7fffffff);		else{			_ctlargcount(r, cp, 5);			rect.max.x = cp->iargs[3];			rect.max.y = cp->iargs[4];		}		rect.min.x = cp->iargs[1];		rect.min.y = cp->iargs[2];		if(rect.min.x<=0 || rect.min.y<=0 || rect.max.x<=0 || rect.max.y<=0 || rect.max.x < rect.min.x || rect.max.y < rect.min.y)			ctlerror("%q: bad sizes: %s", r->name, cp->str);		r->size.min = rect.min;		r->size.max = rect.max;		break;	case EValue:		_ctlargcount(r, cp, 2);		r->value = cp->iargs[1];		radioshow(r);		break;	}} Control*createradiobutton(Controlset *cs, char *name){	Radio *r; 	r = (Radio*)_createctl(cs, "label", sizeof(Radio), name);	r->format = ctlstrdup("%q: value %d");	r->value = -1;	/* nobody set at first */	r->mouse = radiomouse;	r->ctl = radioctl;	return (Control*)r;}