adding toxy project

svn path=/trunk/externals/miXed/; revision=1024

1 files changed, 1146 insertions, 0 deletions

diff --git a/toxy/widget.c b/toxy/widget.c
new file mode 100644
index 0000000..aff5e32
--- /dev/null
+++ b/toxy/widget.c
@@ -0,0 +1,1146 @@
+/* Copyright (c) 2003 krzYszcz and others.
+ * For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ * WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+/* LATER think about reloading method for .wid files */
+/* FIXME sink-binding */
+
+#include <stdio.h>
+#include <string.h>
+#include "m_pd.h"
+#include "g_canvas.h"
+#include "common/loud.h"
+#include "common/grow.h"
+#include "unstable/forky.h"
+#include "hammer/file.h"
+#include "common/props.h"
+#include "toxy/scriptlet.h"
+#include "widgettype.h"
+#include "build_counter"
+
+/* our proxy of the text_class (not in the API), LATER do not cheat */
+static t_class *makeshift_class;
+
+//#define WIDGET_DEBUG
+//#define TOW_DEBUG
+
+enum { WIDGET_NOUPDATE = 0, WIDGET_RECONFIG, WIDGET_REVIS };
+
+typedef struct _towentry
+{
+    struct _tow       *te_tow;
+    struct _towentry  *te_next;
+} t_towentry;
+
+typedef struct _widgetentry
+{
+    struct _widget       *we_widget;
+    struct _widgetentry  *we_next;
+} t_widgetentry;
+
+typedef struct _widget
+{
+    t_object       x_ob;
+    t_glist       *x_glist;       /* containing glist */
+    t_widgettype  *x_typedef;
+    t_symbol      *x_type;        /* 1st creation arg: our type */
+    t_symbol      *x_tkclass;     /* Tk widget class */
+    t_symbol      *x_name;        /* 2nd creation arg: our name (common tag) */
+    t_symbol      *x_cbtarget;    /* same, mangled (a target, and a tag) */
+    t_symbol      *x_rptarget;    /* same, further mangled */
+    t_symbol      *x_cvpathname;  /* see widget_getcvpathname() */
+    t_props       *x_options;     /* instance options */
+    t_props       *x_handlers;    /* instance handlers */
+    t_props       *x_arguments;   /* instance arguments */
+    t_scriptlet   *x_iniscript;   /* instance initializer */
+    t_scriptlet   *x_optscript;   /* option scriptlet */
+    t_scriptlet   *x_auxscript;   /* auxiliary scriptlet */
+    t_scriptlet   *x_transient;   /* output buffer */
+    t_hammerfile  *x_filehandle;
+    int            x_width;
+    int            x_height;
+    t_symbol      *x_background;
+    int            x_hasstate;
+    int            x_update;      /* see widget_update() */
+    int            x_selected;
+    int            x_disabled;
+    t_clock       *x_transclock;
+    t_towentry    *x_towlist;
+} t_widget;
+
+typedef struct _tow
+{
+    t_object   x_ob;
+    t_glist   *x_glist;      /* containing glist */
+    t_symbol  *x_cvremote;   /* null if containing glist is our destination */
+    t_symbol  *x_cvname;
+    t_symbol  *x_type;       /* 2nd creation arg: widget's type */
+    t_symbol  *x_name;       /* 3rd creation arg: widget's name */
+    t_widgettype   *x_typedef;
+    t_widgetentry  *x_widgetlist;
+    struct _tow    *x_next;  /* next in the global towlist */
+} t_tow;
+
+static t_class *widget_class;
+static t_class *tow_class;
+
+/* Global towlist, searched in widget_attach().  There is no global widgetlist,
+   because a destination glist is searched instead in tow_attach(). */
+static t_tow *towlist = 0;
+
+static char *widget_propsresolver(t_pd *z, int ac, t_atom *av)
+{
+    t_widget *x = (t_widget *)z;
+    int len;
+    scriptlet_reset(x->x_auxscript);
+    if (scriptlet_add(x->x_auxscript, 1, 0, ac, av))
+	return (scriptlet_getcontents(x->x_auxscript, &len));
+    else
+	return (0);
+}
+
+static t_canvas *widget_cvhook(t_pd *z)
+{
+    return (glist_getcanvas(((t_widget *)z)->x_glist));
+}
+
+/* LATER move to scriptlet.c, use the scriptlet interface (.^) */
+static t_symbol *widget_getcvpathname(t_widget *x, t_glist *glist)
+{
+    t_canvas *cv;
+    if (glist && glist != x->x_glist)
+    {
+	bug("widget_getcvpathname");
+	x->x_glist = glist;
+    }
+    cv = glist_getcanvas(x->x_glist);
+    if (cv == x->x_glist)
+	return (x->x_cvpathname);  /* we are not in a gop */
+    else
+    {
+	char buf[32];
+	sprintf(buf, ".x%x.c", (int)cv);
+	return (gensym(buf));
+    }
+}
+
+/* LATER use the scriptlet interface (.-) */
+static t_symbol *widget_getmypathname(t_widget *x, t_glist *glist)
+{
+    char buf[64];
+    t_symbol *cvpathname = widget_getcvpathname(x, glist);
+    sprintf(buf, "%s.%s%x", cvpathname->s_name, x->x_name->s_name, (int)x);
+    return (gensym(buf));
+}
+
+static void widget_postatoms(char *msg, int ac, t_atom *av)
+{
+    startpost(msg);
+    while (ac--)
+    {
+	if (av->a_type == A_FLOAT)
+	    postfloat(av->a_w.w_float);
+	else if (av->a_type == A_SYMBOL)
+	    poststring(av->a_w.w_symbol->s_name);
+	av++;
+    }
+    endpost();
+}
+
+static void widget_transtick(t_widget *x)
+{
+    glist_delete(x->x_glist, (t_gobj *)x);
+}
+
+/* called from widget__failure(), LATER also bind this to F4 or something */
+static void widget_transedit(t_widget *x)
+{
+    t_text *newt, *oldt = (t_text *)x;
+    t_binbuf *bb = binbuf_new();
+    int nopt, nbnd, narg;
+    t_atom *opt = props_getall(x->x_options, &nopt);
+    t_atom *bnd = props_getall(x->x_handlers, &nbnd);
+    t_atom *arg = props_getall(x->x_arguments, &narg);
+    binbuf_addv(bb, "sss", gensym("widget"), x->x_type, x->x_name);
+    if (narg) binbuf_add(bb, narg, arg);
+    if (nopt) binbuf_add(bb, nopt, opt);
+    if (nbnd) binbuf_add(bb, nbnd, bnd);
+    canvas_setcurrent(x->x_glist);
+    newt = (t_text *)pd_new(makeshift_class);
+    newt->te_width = 0;
+    newt->te_type = T_OBJECT;
+    newt->te_binbuf = bb;
+    newt->te_xpix = oldt->te_xpix;
+    newt->te_ypix = oldt->te_ypix;
+    glist_add(x->x_glist, &newt->te_g);
+    glist_noselect(x->x_glist);
+    glist_select(x->x_glist, &newt->te_g);
+    gobj_activate(&newt->te_g, x->x_glist, 1);
+    x->x_glist->gl_editor->e_textdirty = 1;  /* force evaluation */
+    canvas_unsetcurrent(x->x_glist);
+    canvas_dirty(x->x_glist, 1);
+    clock_delay(x->x_transclock, 0);  /* LATER rethink */
+}
+
+/* FIXME x_glist field validation against glist parameter (all handlers) */
+
+static void widget_getrect(t_gobj *z, t_glist *glist,
+			   int *xp1, int *yp1, int *xp2, int *yp2)
+{
+    t_widget *x = (t_widget *)z;
+    float x1, y1, x2, y2;
+    x1 = text_xpix((t_text *)x, glist);
+    y1 = text_ypix((t_text *)x, glist);
+    x2 = x1 + x->x_width;
+    y2 = y1 + x->x_height;
+    *xp1 = x1;
+    *yp1 = y1;
+    *xp2 = x2;
+    *yp2 = y2;
+}
+
+static void widget_displace(t_gobj *z, t_glist *glist, int dx, int dy)
+{
+    t_widget *x = (t_widget *)z;
+    t_text *t = (t_text *)z;
+    t->te_xpix += dx;
+    t->te_ypix += dy;
+    if (glist_isvisible(glist))
+	sys_vgui("%s move %s %d %d\n", widget_getcvpathname(x, glist)->s_name,
+		 x->x_cbtarget->s_name, dx, dy);
+    canvas_fixlinesfor(glist_getcanvas(glist), t);
+}
+
+static void widget_select(t_gobj *z, t_glist *glist, int state)
+{
+    t_widget *x = (t_widget *)z;
+    char *mypathname = widget_getmypathname(x, glist)->s_name;
+    if (state)
+    {
+	sys_vgui("%s config -bg blue %s\n", mypathname,
+		 (x->x_hasstate ? "-state disabled" : ""));
+	x->x_selected = 1;
+    }
+    else
+    {
+	if (x->x_disabled)
+	    sys_vgui("%s config -bg %s\n", mypathname,
+		     (x->x_background ? x->x_background->s_name : "gray"));
+	else
+	    sys_vgui("%s config -bg %s\n", mypathname,
+		     (x->x_background ? x->x_background->s_name : "gray"),
+		     (x->x_hasstate ? "-state normal" : ""));
+	x->x_selected = 0;
+    }
+}
+
+static void widget_delete(t_gobj *z, t_glist *glist)
+{
+    canvas_deletelinesfor(glist, (t_text *)z);
+}
+
+static void widget_pushoptions(t_widget *x)
+{
+    char *mypathname = widget_getmypathname(x, x->x_glist)->s_name;
+    if (scriptlet_evaluate(x->x_optscript, x->x_transient, 0, 0, 0, 0))
+    {
+#ifdef WIDGET_DEBUG
+	int sz;
+	char *dp = scriptlet_getcontents(x->x_transient, &sz);
+	post("vis: \"%s\"", dp);
+#endif
+	sys_vgui("%s config ", mypathname);
+	scriptlet_push(x->x_transient);
+    }
+    else
+    {
+	/* LATER if scriptlet not empty: bug("widget_pushoptions"); */
+    }
+}
+
+static void widget_pushinits(t_widget *x)
+{
+    if (masterwidget_evaluate(x->x_transient, 0, 0, 0, x->x_arguments))
+	scriptlet_push(x->x_transient);
+    else
+	bug("widget_pushinits (master)");
+    if (widgettype_isdefined(x->x_typedef))
+    {
+	if (widgettype_evaluate(x->x_typedef, x->x_transient, 0,
+				0, 0, x->x_arguments))
+	    scriptlet_push(x->x_transient);
+	else
+	{
+	    /* LATER if scriptlet not empty: bug("widget_pushinits (type)"); */
+	}
+    }
+    if (scriptlet_evaluate(x->x_iniscript, x->x_transient, 0,
+			   0, 0, x->x_arguments))
+	scriptlet_push(x->x_transient);
+    else
+    {
+	/* LATER if scriptlet not empty: bug("widget_pushinits (instance)"); */
+    }
+}
+
+static void widget_vis(t_gobj *z, t_glist *glist, int vis)
+{
+    t_widget *x = (t_widget *)z;
+    t_text *t = (t_text *)z;
+    char *cvpathname = widget_getcvpathname(x, glist)->s_name;
+    char *mypathname = widget_getmypathname(x, glist)->s_name;
+    x->x_update = WIDGET_NOUPDATE;
+    if (vis)
+    {
+	float px1 = text_xpix((t_text *)x, glist);
+	float py1 = text_ypix((t_text *)x, glist);
+#ifndef PD_MINOR_VERSION
+	rtext_new(glist, t, glist->gl_editor->e_rtext, 0);
+#endif
+	sys_vgui("set ::toxy::itempath %s; set ::toxy::itemtarget %s\n\
+ set ::toxy::itemfailure [catch {%s %s}]\n\
+ if {$::toxy::itemfailure} {pd %s _failure\\;}\n",
+		 mypathname, x->x_rptarget->s_name,
+		 x->x_tkclass->s_name, mypathname,
+		 x->x_rptarget->s_name);
+	widget_pushoptions(x);
+	sys_vgui("if {$::toxy::itemfailure == 0}\
+ {%s create window %g %g\
+ -anchor nw -window %s -tags {toxy%s %s}}\n",
+		 cvpathname, px1, py1, mypathname,
+		 x->x_name->s_name, x->x_cbtarget->s_name);
+	widget_pushinits(x);
+	sys_vgui("if {$::toxy::itemfailure == 0}\
+ {pd %s _config %s [%s cget -bg]\
+ [winfo reqwidth %s] [winfo reqheight %s]\
+ [catch {%s config -state normal}]\\;}\n",
+		 x->x_rptarget->s_name, x->x_rptarget->s_name,
+		 mypathname, mypathname, mypathname, mypathname);
+	sys_gui("unset ::toxy::itempath; unset ::toxy::itemtarget\n");
+    }
+    else
+    {
+#ifndef PD_MINOR_VERSION
+	t_rtext *rt = glist_findrtext(glist, t);
+	if (rt) rtext_free(rt);
+#endif
+	sys_vgui("destroy %s\n", mypathname);
+    }
+}
+
+static void widget_save(t_gobj *z, t_binbuf *bb)
+{
+    t_widget *x = (t_widget *)z;
+    t_text *t = (t_text *)x;
+    int nopt, nbnd, narg;
+    t_atom *opt = props_getall(x->x_options, &nopt);
+    t_atom *bnd = props_getall(x->x_handlers, &nbnd);
+    t_atom *arg = props_getall(x->x_arguments, &narg);
+    binbuf_addv(bb, "ssiisss", gensym("#X"), gensym("obj"),
+		(int)t->te_xpix, (int)t->te_ypix, gensym("widget"),
+		x->x_type, x->x_name);
+    if (narg) binbuf_add(bb, narg, arg);
+    if (nopt) binbuf_add(bb, nopt, opt);
+    if (nbnd) binbuf_add(bb, nbnd, bnd);
+    binbuf_addsemi(bb);
+}
+
+/* FIXME */
+static void widget_properties(t_gobj *z, t_glist *glist)
+{
+    t_widget *x = (t_widget *)z;
+    t_atom *ap;
+    int ac, nleft;
+    char *head = scriptlet_getcontents(x->x_optscript, &nleft);
+    char buf[MAXPDSTRING + 1];
+    buf[MAXPDSTRING] = 0;
+    sprintf(buf, "%s %s", x->x_type->s_name, x->x_name->s_name);
+    hammereditor_open(x->x_filehandle, buf);
+    while (nleft > 0)
+    {
+	if (nleft > MAXPDSTRING)
+	{
+	    strncpy(buf, head, MAXPDSTRING);
+	    head += MAXPDSTRING;
+	    nleft -= MAXPDSTRING;
+	}
+	else
+	{
+	    strncpy(buf, head, nleft);
+	    buf[nleft] = 0;
+	    nleft = 0;
+	}
+	hammereditor_append(x->x_filehandle, buf);
+    }
+    scriptlet_reset(x->x_auxscript);
+    ap = props_getall(x->x_handlers, &ac);
+    if (ac) scriptlet_add(x->x_auxscript, 0, 0, ac, ap);
+    head = scriptlet_getcontents(x->x_auxscript, &nleft);
+    hammereditor_append(x->x_filehandle, "\n");
+    while (nleft > 0)
+    {
+	if (nleft > MAXPDSTRING)
+	{
+	    strncpy(buf, head, MAXPDSTRING);
+	    head += MAXPDSTRING;
+	    nleft -= MAXPDSTRING;
+	}
+	else
+	{
+	    strncpy(buf, head, nleft);
+	    buf[nleft] = 0;
+	    nleft = 0;
+	}
+	hammereditor_append(x->x_filehandle, buf);
+    }
+}
+
+static t_widgetbehavior widget_behavior =
+{
+    widget_getrect,
+    widget_displace,
+    widget_select,
+    0,
+    widget_delete,
+    widget_vis,
+    0,
+    FORKY_WIDGETPADDING
+};
+
+static void widget_update(t_widget *x)
+{
+    t_atom *ap;
+    int ac;
+    scriptlet_reset(x->x_optscript);
+    ap = props_getall(widgettype_getoptions(x->x_typedef), &ac);
+    if (ac) scriptlet_add(x->x_optscript, 0, 0, ac, ap);
+    ap = props_getall(x->x_options, &ac);
+    if (ac) scriptlet_add(x->x_optscript, 0, 0, ac, ap);
+    if (x->x_update &&
+	glist_isvisible(x->x_glist))  /* FIXME the condition */
+    {
+	if (x->x_update == WIDGET_REVIS)
+	{
+	    widget_vis((t_gobj *)x, x->x_glist, 0);
+	    widget_vis((t_gobj *)x, x->x_glist, 1);
+	}
+	else widget_pushoptions(x);
+	x->x_update = WIDGET_NOUPDATE;
+    }
+    /* LATER cache handlers */
+}
+
+static t_symbol *widget_addprops(t_widget *x, t_props *op,
+				 t_symbol *s, int ac, t_atom *av)
+{
+    if (op)
+    {
+	t_symbol *empty;
+	empty = props_add(op, s, ac, av);
+	if (empty)
+	    loud_error((t_pd *)x, "no value given for %s '%s'",
+		       props_getname(op), empty->s_name);
+	widget_update(x);
+	return (empty);
+    }
+    else
+    {
+	bug("widget_addprops");
+	return (0);
+    }
+}
+
+static t_symbol *widget_addmessage(t_widget *x, t_symbol *s, int ac, t_atom *av)
+{
+    t_symbol *empty;
+    if (!(empty = widget_addprops(x, x->x_options, s, ac, av)) &&
+	!(empty = widget_addprops(x, x->x_handlers, s, ac, av)))
+	empty = widget_addprops(x, x->x_arguments, s, ac, av);
+    return (empty);
+}
+
+static void widget_anything(t_widget *x, t_symbol *s, int ac, t_atom *av)
+{
+    if (s && s != &s_)
+    {
+	if (*s->s_name == '-' || *s->s_name == '@' || *s->s_name == '#')
+	{
+	    t_symbol *empty;
+	    x->x_update = WIDGET_RECONFIG;
+	    if (empty = widget_addmessage(x, s, ac, av))
+		loud_errand((t_pd *)x,
+			    "(use 'remove %s' if that is what you want).",
+			    empty->s_name);
+	}
+	else
+	{
+	    /* LATER cache this */
+	    int hlen;
+	    t_atom *hp;
+	    t_symbol *sel;
+	    char buf[MAXPDSTRING];
+	    buf[0] = '@';
+	    strcpy(buf + 1, s->s_name);
+	    sel = gensym(buf);
+	    if (((hp = props_getone(x->x_handlers, sel, &hlen)) ||
+		 (hp = props_getone(widgettype_gethandlers(x->x_typedef),
+				    sel, &hlen)))
+		&& hlen > 1)
+	    {
+		scriptlet_reset(x->x_auxscript);
+		scriptlet_add(x->x_auxscript, 0, 0, hlen - 1, hp + 1);
+		if (scriptlet_evaluate(x->x_auxscript, x->x_transient,
+				       1, ac, av, 0))
+		    scriptlet_push(x->x_transient);
+	    }
+	    else loud_nomethod((t_pd *)x, s);
+	}
+    }
+}
+
+/* LATER cache this */
+static void widget_bang(t_widget *x)
+{
+    int ac;
+    t_atom *av;
+    t_symbol *sel = gensym("@bang");
+    if ((av = props_getone(x->x_handlers, sel, &ac)) ||
+	(av = props_getone(widgettype_gethandlers(x->x_typedef), sel, &ac)))
+    {
+	if (ac > 1)
+	{
+	    scriptlet_reset(x->x_transient);
+	    scriptlet_add(x->x_transient, 1, 1, ac - 1, av + 1);
+	    scriptlet_push(x->x_transient);
+	}
+    }
+}
+
+/* LATER cache this */
+static void widget_float(t_widget *x, t_float f)
+{
+    int ac;
+    t_atom *av;
+    t_symbol *sel = gensym("@float");
+    if ((av = props_getone(x->x_handlers, sel, &ac)) ||
+	(av = props_getone(widgettype_gethandlers(x->x_typedef), sel, &ac)))
+    {
+	if (ac > 1)
+	{
+	    t_atom at;
+	    SETFLOAT(&at, f);
+	    scriptlet_reset(x->x_auxscript);
+	    scriptlet_add(x->x_auxscript, 0, 0, ac - 1, av + 1);
+	    if (scriptlet_evaluate(x->x_auxscript,
+				   x->x_transient, 1, 1, &at, 0))
+		scriptlet_push(x->x_transient);
+	}
+    }
+}
+
+/* LATER cache this */
+static void widget_symbol(t_widget *x, t_symbol *s)
+{
+    int ac;
+    t_atom *av;
+    t_symbol *sel = gensym("@symbol");
+    if ((av = props_getone(x->x_handlers, sel, &ac)) ||
+	(av = props_getone(widgettype_gethandlers(x->x_typedef), sel, &ac)))
+    {
+	if (ac > 1)
+	{
+	    t_atom at;
+	    SETSYMBOL(&at, s);
+	    scriptlet_reset(x->x_auxscript);
+	    scriptlet_add(x->x_auxscript, 0, 0, ac - 1, av + 1);
+	    if (scriptlet_evaluate(x->x_auxscript,
+				   x->x_transient, 1, 1, &at, 0))
+		scriptlet_push(x->x_transient);
+	}
+    }
+}
+
+static void widget_remove(t_widget *x, t_symbol *s)
+{
+    if (s)
+    {
+	t_props *op;
+	if (*s->s_name == '-')
+	    op = x->x_options;
+	else if (*s->s_name == '@')
+	    op = x->x_handlers;
+	else if (*s->s_name == '#')
+	    op = x->x_arguments;
+	else
+	    op = 0;
+	if (op && props_remove(op, s))
+	{
+	    x->x_update = WIDGET_REVIS;
+	    widget_update(x);
+	}
+	else loud_warning((t_pd *)x, "%s %s has not been specified",
+			  props_getname(op), s->s_name);
+    }
+}
+
+static void widget_ini(t_widget *x, t_symbol *s, int ac, t_atom *av)
+{
+    if (ac)
+    {
+	scriptlet_reset(x->x_iniscript);
+	scriptlet_add(x->x_iniscript, 0, 0, ac, av);
+    }
+}
+static void widget_tot(t_widget *x, t_symbol *s, int ac, t_atom *av)
+{
+    if (ac)
+    {
+	t_scriptlet *sp = x->x_transient;
+	scriptlet_reset(sp);
+	scriptlet_add(sp, 1, 1, ac, av);
+	scriptlet_push(sp);
+    }
+}
+
+static void widget_refresh(t_widget *x)
+{
+    x->x_update = WIDGET_REVIS;
+    widget_update(x);
+}
+
+static void widget__failure(t_widget *x)
+{
+    /* LATER pass error message from gui, and report here */
+    loud_error((t_pd *)x, "creation failure");
+    widget_transedit(x);
+}
+
+static void widget__config(t_widget *x, t_symbol *target, t_symbol *bg,
+			   t_floatarg fw, t_floatarg fh, t_floatarg fst)
+{
+#ifdef WIDGET_DEBUG
+    post("config %d \"%s\" %g %g", bg->s_name, fw, fh);
+#endif
+    x->x_width = (int)fw;
+    x->x_height = (int)fh;
+    if (bg != &s_) x->x_background = bg;
+    x->x_hasstate = ((int)fst == 0);
+    canvas_fixlinesfor(glist_getcanvas(x->x_glist), (t_text *)x);  /* FIXME */
+}
+
+static void widget__callback(t_widget *x, t_symbol *s, int ac, t_atom *av)
+{
+    if (ac == 1)
+    {
+	if (av->a_type == A_FLOAT)
+	    outlet_float(((t_object *)x)->ob_outlet, av->a_w.w_float);
+	else if (av->a_type == A_SYMBOL)
+	    outlet_symbol(((t_object *)x)->ob_outlet, av->a_w.w_symbol);
+    }
+    else if (ac)
+    {
+	if (av->a_type == A_FLOAT)
+	    outlet_list(((t_object *)x)->ob_outlet, &s_list, ac, av);
+	else if (av->a_type == A_SYMBOL)
+	    outlet_anything(((t_object *)x)->ob_outlet,
+			    av->a_w.w_symbol, ac - 1, av + 1);
+    }
+    else outlet_bang(((t_object *)x)->ob_outlet);
+}
+
+/* FIXME this is a hack (see also widget_select) */
+/* FIXME why <Leave> is being issued on button press? */
+static void widget__inout(t_widget *x, t_floatarg f)
+{
+    if (x->x_disabled)
+    {
+	if (!x->x_glist->gl_edit)
+	{
+	    if (!x->x_selected)
+	    {
+		char *mypathname = widget_getmypathname(x, x->x_glist)->s_name;
+		if (x->x_hasstate)
+		    sys_vgui("%s config -state normal\n", mypathname);
+	    }
+	    x->x_disabled = 0;
+	}
+    }
+    else if ((int)f && x->x_glist->gl_edit)
+    {
+	char *mypathname = widget_getmypathname(x, x->x_glist)->s_name;
+	if (x->x_hasstate)
+	    sys_vgui("%s config -state disabled\n", mypathname);
+	x->x_disabled = 1;
+    }
+}
+
+static void widget__click(t_widget *x, t_floatarg fx, t_floatarg fy,
+			  t_floatarg fb, t_floatarg fm)
+{
+    t_text *t = (t_text *)x;
+    t_atom at[4];
+    fx += t->te_xpix;
+    fy += t->te_ypix;
+    SETFLOAT(&at[0], fx);
+    SETFLOAT(&at[1], fy);
+    SETFLOAT(&at[2], fb);
+    SETFLOAT(&at[3], fm);
+    typedmess((t_pd *)x->x_glist, gensym("mouse"), 4, at);
+    widget__inout(x, 1.);
+}
+
+static void widget__motion(t_widget *x, t_floatarg fx, t_floatarg fy)
+{
+    t_text *t = (t_text *)x;
+    t_atom at[3];
+    fx += t->te_xpix;
+    fy += t->te_ypix;
+    SETFLOAT(&at[0], fx);
+    SETFLOAT(&at[1], fy);
+    SETFLOAT(&at[2], 0);
+    typedmess((t_pd *)x->x_glist, gensym("motion"), 3, at);
+}
+
+int widget_iswidget(t_gobj *g, t_symbol *type, t_symbol *name)
+{
+    if (*(t_pd *)g == widget_class)
+    {
+	t_widget *x = (t_widget *)g;
+	return ((!type || type == x->x_type) &&
+		(!name || name == x->x_name));
+    }
+    else return (0);
+}
+
+#ifdef WIDGET_DEBUG
+static void widget_debug(t_widget *x)
+{
+    t_symbol *pn = widget_getcvpathname(x, 0);
+    t_symbol *mn = widget_getmypathname(x, 0);
+    int sz, i, nopt;
+    t_atom *ap;
+    char *bp, *key;
+    post("containing glist: %x", x->x_glist);
+    post("cv pathname%s %s", (pn ? ":" : ""), (pn ? pn->s_name : "unknown"));
+    post("my pathname%s %s", (mn ? ":" : ""), (mn ? mn->s_name : "unknown"));
+    if (ap = props_getall(widgettype_getoptions(x->x_typedef), &nopt))
+	widget_postatoms("default options:", nopt, ap);
+    if (ap = props_getall(x->x_options, &nopt))
+	widget_postatoms("instance options:", nopt, ap);
+    if (ap = props_getall(widgettype_gethandlers(x->x_typedef), &nopt))
+	widget_postatoms("default handlers:", nopt, ap);
+    if (ap = props_getall(x->x_handlers, &nopt))
+	widget_postatoms("instance handlers:", nopt, ap);
+    if (ap = props_getall(widgettype_getarguments(x->x_typedef), &nopt))
+	widget_postatoms("default arguments:", nopt, ap);
+    if (ap = props_getall(x->x_arguments, &nopt))
+	widget_postatoms("instance arguments:", nopt, ap);
+    post("dictionary:");
+    bp = props_firstvalue(x->x_arguments, &key);
+    while (bp)
+    {
+	post("\t%s: \"%s\"", key, bp);
+	bp = props_nextvalue(x->x_arguments, &key);
+    }
+    bp = scriptlet_getcontents(x->x_transient, &sz);
+    post("transient buffer (size %d):\n\"%s\"", sz, bp);
+    bp = scriptlet_getcontents(x->x_optscript, &sz);
+    post("option buffer (size %d):\n\"%s\"", sz, bp);
+    bp = widgettype_getcontents(x->x_typedef, &sz);
+    post("type initializer (size %d):\n\"%s\"", sz, bp);
+    bp = scriptlet_getcontents(x->x_iniscript, &sz);
+    post("instance initializer (size %d):\n\"%s\"", sz, bp);
+}
+#endif
+
+static void widget_attach(t_widget *x);
+static void widget_detach(t_widget *x);
+
+static void widget_free(t_widget *x)
+{
+    pd_unbind((t_pd *)x, x->x_cbtarget);
+    pd_unbind((t_pd *)x, x->x_rptarget);
+    props_freeall(x->x_options);
+    scriptlet_free(x->x_iniscript);
+    scriptlet_free(x->x_optscript);
+    scriptlet_free(x->x_auxscript);
+    scriptlet_free(x->x_transient);
+    hammerfile_free(x->x_filehandle);
+    if (x->x_transclock) clock_free(x->x_transclock);
+    widget_detach(x);
+}
+
+static void *widget_new(t_symbol *s, int ac, t_atom *av)
+{
+    t_widget *x = (t_widget *)pd_new(widget_class);
+    char buf[MAXPDSTRING];
+    masterwidget_initialize();
+    x->x_type = 0;
+    x->x_name = 0;
+    if (ac && av->a_type == A_SYMBOL)
+    {
+	x->x_type = av->a_w.w_symbol;
+	ac--; av++;
+    }
+    if (ac && av->a_type == A_SYMBOL)
+    {
+	x->x_name = av->a_w.w_symbol;
+	ac--; av++;
+    }
+    /* LATER think about anonymous widgets (single arg, or '.') */
+    if (!x->x_type || x->x_type == &s_ ||
+	!x->x_name || x->x_name == &s_)
+    {
+	loud_error((t_pd *)x, "bad arguments for a widget");
+	loud_errand((t_pd *)x,
+		    "expecting \"widget <type> <name> [properties]\"");
+	return (0);
+    }
+    sprintf(buf, "%s%x", x->x_name->s_name, (int)x);
+    pd_bind((t_pd *)x, x->x_cbtarget = gensym(buf));
+    sprintf(buf, "%s%x.rp", x->x_name->s_name, (int)x);
+    pd_bind((t_pd *)x, x->x_rptarget = gensym(buf));
+
+    x->x_typedef = widgettype_get(x->x_type);
+    if (!(x->x_tkclass = widgettype_tkclass(x->x_typedef)))
+	x->x_tkclass = x->x_type;
+
+    x->x_iniscript = scriptlet_new((t_pd *)x, x->x_rptarget, x->x_cbtarget,
+				   x->x_name, widget_cvhook);
+    x->x_optscript = scriptlet_new((t_pd *)x, x->x_rptarget, x->x_cbtarget,
+				   x->x_name, widget_cvhook);
+    x->x_auxscript = scriptlet_new((t_pd *)x, x->x_rptarget, x->x_cbtarget,
+				   x->x_name, widget_cvhook);
+    x->x_transient = scriptlet_new((t_pd *)x, x->x_rptarget, x->x_cbtarget,
+				   x->x_name, widget_cvhook);
+
+    x->x_options = props_new((t_pd *)x, "option", "-", 0, 0);
+    x->x_handlers = props_new((t_pd *)x, "handler", "@", x->x_options, 0);
+    x->x_arguments = props_new((t_pd *)x, "argument", "#", x->x_options,
+			       widget_propsresolver);
+
+    sprintf(buf, ".^.c.%s%x", x->x_name->s_name, (int)x);
+    x->x_glist = canvas_getcurrent();
+    sprintf(buf, ".x%x.c", (int)x->x_glist);
+    x->x_cvpathname = gensym(buf);
+    outlet_new((t_object *)x, &s_anything);
+    /* LATER consider estimating these, based on widget class and options */
+    x->x_width = 50;
+    x->x_height = 50;
+    props_clone(x->x_arguments, widgettype_getarguments(x->x_typedef));
+    widget_addmessage(x, 0, ac, av);
+    x->x_filehandle = hammerfile_new((t_pd *)x, 0, 0, 0, 0);
+    x->x_transclock = clock_new(x, (t_method)widget_transtick);
+    x->x_background = 0;
+    x->x_hasstate = 0;
+    x->x_update = WIDGET_NOUPDATE;
+    x->x_disabled = 0;
+    widget_attach(x);
+    return (x);
+}
+
+static t_glist *tow_getglist(t_tow *x, int complain)
+{
+    t_glist *glist =
+	(x->x_cvremote ?
+	 (t_glist *)pd_findbyclass(x->x_cvremote, canvas_class) : x->x_glist);
+    if (!glist && complain)
+	loud_error((t_pd *)x, "bad canvas name '%s'", x->x_cvname->s_name);
+    return (glist);
+}
+
+static void tow_bang(t_tow *x)
+{
+    t_widgetentry *we;
+    for (we = x->x_widgetlist; we; we = we->we_next)
+	widget_bang(we->we_widget);
+}
+
+static void tow_float(t_tow *x, t_float f)
+{
+    t_widgetentry *we;
+    for (we = x->x_widgetlist; we; we = we->we_next)
+	widget_float(we->we_widget, f);
+}
+
+static void tow_symbol(t_tow *x, t_symbol *s)
+{
+    t_widgetentry *we;
+    for (we = x->x_widgetlist; we; we = we->we_next)
+	widget_symbol(we->we_widget, s);
+}
+
+static void tow_anything(t_tow *x, t_symbol *s, int ac, t_atom *av)
+{
+    t_widgetentry *we;
+    for (we = x->x_widgetlist; we; we = we->we_next)
+	typedmess((t_pd *)we->we_widget, s, ac, av);
+}
+
+static void tow__callback(t_tow *x, t_symbol *s, int ac, t_atom *av)
+{
+    if (ac == 1)
+    {
+	if (av->a_type == A_FLOAT)
+	    outlet_float(((t_object *)x)->ob_outlet, av->a_w.w_float);
+	else if (av->a_type == A_SYMBOL)
+	    outlet_symbol(((t_object *)x)->ob_outlet, av->a_w.w_symbol);
+    }
+    else if (ac)
+    {
+	if (av->a_type == A_FLOAT)
+	    outlet_list(((t_object *)x)->ob_outlet, &s_list, ac, av);
+	else if (av->a_type == A_SYMBOL)
+	    outlet_anything(((t_object *)x)->ob_outlet,
+			    av->a_w.w_symbol, ac - 1, av + 1);
+    }
+    else outlet_bang(((t_object *)x)->ob_outlet);
+}
+
+static void tow_widgetattach(t_tow *x, t_widget *w)
+{
+    t_towentry *te = getbytes(sizeof(*te));
+    t_widgetentry *we = getbytes(sizeof(*we));
+    te->te_tow = x;
+    te->te_next = w->x_towlist;
+    w->x_towlist = te;
+    we->we_widget = w;
+    we->we_next = x->x_widgetlist;
+    x->x_widgetlist = we;
+    pd_bind((t_pd *)x, w->x_cbtarget);
+#ifdef TOW_DEBUG
+    post("%s widget '%s' attached", w->x_type->s_name, w->x_cbtarget->s_name);
+#endif
+}
+
+static void tow_widgetdetach(t_tow *x, t_widget *w)
+{
+    t_widgetentry *we1, *we2;
+    for (we1 = 0, we2 = x->x_widgetlist; we2; we2 = we2->we_next)
+    {
+	if (we2->we_widget == w)
+	{
+#ifdef TOW_DEBUG
+	    post("%s widget '%s' detached by widget's destructor",
+		 w->x_type->s_name, w->x_cbtarget->s_name);
+#endif
+	    pd_unbind((t_pd *)x, w->x_cbtarget);
+	    if (we1)
+		we1->we_next = we2->we_next;
+	    else
+		x->x_widgetlist = we2->we_next;
+	    freebytes(we2, sizeof(*we2));
+	    return;
+	}
+	we1 = we2;
+    }
+    bug("tow_widgetdetach");
+}
+
+static void widget_attach(t_widget *x)
+{
+    t_tow *t;
+    for (t = towlist; t; t = t->x_next)
+	if (x->x_glist == tow_getglist(t, 0) &&
+	    t->x_type == x->x_type && t->x_name == x->x_name)
+	    tow_widgetattach(t, x);
+}
+
+static void widget_detach(t_widget *x)
+{
+    t_towentry *te;
+    while (te = x->x_towlist)
+    {
+	x->x_towlist = te->te_next;
+	tow_widgetdetach(te->te_tow, x);
+	freebytes(te, sizeof(*te));
+    }
+}
+
+static void tow_attach(t_tow *x)
+{
+    t_glist *glist = tow_getglist(x, 0);
+    if (glist)
+    {
+	t_gobj *g;
+	for (g = glist->gl_list; g; g = g->g_next)
+	{
+	    if (*(t_pd *)g == widget_class)
+	    {
+		t_widget *w = (t_widget *)g;
+		if (w->x_type == x->x_type && w->x_name == x->x_name)
+		    tow_widgetattach(x, w);
+	    }
+	}
+#ifdef TOW_DEBUG
+	if (!x->x_widgetlist)
+	    post("%s widget '%s' not found",
+		 x->x_type->s_name, x->x_name->s_name);
+#endif
+    }
+#ifdef TOW_DEBUG
+    else post("glist '%s' not found", x->x_cvname->s_name);
+#endif
+}
+
+static void tow_detach(t_tow *x)
+{
+    t_widgetentry *we;
+    while (we = x->x_widgetlist)
+    {
+	t_widget *w = we->we_widget;
+	t_towentry *te1, *te2;
+	x->x_widgetlist = we->we_next;
+	pd_unbind((t_pd *)x, w->x_cbtarget);
+	freebytes(we, sizeof(*we));
+	for (te1 = 0, te2 = w->x_towlist; te2; te2 = te2->te_next)
+	{
+	    if (te2->te_tow == x)
+	    {
+#ifdef TOW_DEBUG
+		post("%s widget '%s' detached by tow's destructor",
+		     w->x_type->s_name, w->x_cbtarget->s_name);
+#endif
+		if (te1)
+		    te1->te_next = te2->te_next;
+		else
+		    w->x_towlist = te2->te_next;
+		freebytes(te2, sizeof(*te2));
+		break;
+	    }
+	    te1 = te2;
+	}
+	if (!te2) bug("tow_detach");
+    }
+}
+
+#ifdef TOW_DEBUG
+static void tow_debug(t_tow *x)
+{
+    t_widgetentry *we;
+    post("attached widgets:");
+    for (we = x->x_widgetlist; we; we = we->we_next)
+    {
+	t_widget *w = we->we_widget;
+	t_towentry *te;
+	int other = 0, found = 0;
+	startpost("\t%s %s", w->x_type->s_name, w->x_cbtarget->s_name);
+	for (te = w->x_towlist; te; te = te->te_next)
+	    if (te->te_tow == x)
+		found++;
+	    else
+		other++;
+	post(" (%d other tow%s)", other, (other == 1 ? "" : "s"));
+	if (found != 1) post("BUG: listed %d times in widget's towlist", found);
+    }
+}
+#endif
+
+static void tow_free(t_tow *x)
+{
+    t_tow *t1, *t2;
+#ifdef TOW_DEBUG
+    startpost("updating towlist...");
+#endif
+    for (t1 = 0, t2 = towlist; t2; t2 = t2->x_next)
+    {
+	if (t2 == x)
+	{
+	    if (t1)
+		t1->x_next = t2->x_next;
+	    else
+		towlist = t2->x_next;
+#ifdef TOW_DEBUG
+	    post("ok");
+#endif
+	    break;
+	}
+	t1 = t2;
+    }
+    tow_detach(x);
+}
+
+static void *tow_new(t_symbol *s1, t_symbol *s2, t_symbol *s3)
+{
+    t_tow *x = (t_tow *)pd_new(tow_class);
+    char buf[64];
+    x->x_glist = canvas_getcurrent();
+    if (s1 && s1 != &s_ && strcmp(s1->s_name, "."))
+	x->x_cvremote = canvas_makebindsym(x->x_cvname = s1);
+    else
+    {
+	x->x_cvremote = 0;
+	x->x_cvname = x->x_glist->gl_name;
+    }
+    x->x_type = s2;
+    x->x_name = s3;
+    outlet_new((t_object *)x, &s_anything);
+    x->x_widgetlist = 0;
+    x->x_next = towlist;
+    towlist = x;
+    tow_attach(x);
+    return (x);
+}
+
+void widget_setup(void)
+{
+    post("beware! this is widget %s, %s %s build...",
+	 TOXY_VERSION, loud_ordinal(TOXY_BUILD), TOXY_RELEASE);
+    widgettype_setup();
+    widget_class = class_new(gensym("widget"),
+			     (t_newmethod)widget_new,
+			     (t_method)widget_free,
+			     sizeof(t_widget), 0, A_GIMME, 0);
+    class_setwidget(widget_class, &widget_behavior);
+    forky_setsavefn(widget_class, widget_save);
+    forky_setpropertiesfn(widget_class, widget_properties);
+    class_addbang(widget_class, widget_bang);
+    class_addfloat(widget_class, widget_float);
+    class_addsymbol(widget_class, widget_symbol);
+    class_addanything(widget_class, widget_anything);
+    class_addmethod(widget_class, (t_method)widget_remove,
+		    gensym("remove"), A_SYMBOL, 0);
+    class_addmethod(widget_class, (t_method)widget_ini,
+		    gensym("ini"), A_GIMME, 0);
+    class_addmethod(widget_class, (t_method)widget_tot,
+		    gensym("tot"), A_GIMME, 0);
+    class_addmethod(widget_class, (t_method)widget_refresh,
+		    gensym("refresh"), 0);
+    class_addmethod(widget_class, (t_method)widget__config,
+		    gensym("_config"),
+		    A_SYMBOL, A_SYMBOL, A_FLOAT, A_FLOAT, A_FLOAT, 0);
+    class_addmethod(widget_class, (t_method)widget__failure,
+		    gensym("_failure"), 0);
+    class_addmethod(widget_class, (t_method)widget__callback,
+		    gensym("_cb"), A_GIMME, 0);
+    class_addmethod(widget_class, (t_method)widget__inout,
+		    gensym("_inout"), A_FLOAT, 0);
+    class_addmethod(widget_class, (t_method)widget__click,
+		    gensym("_click"), A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, 0);
+    class_addmethod(widget_class, (t_method)widget__motion,
+		    gensym("_motion"), A_FLOAT, A_FLOAT, 0);
+#ifdef WIDGET_DEBUG
+    class_addmethod(widget_class, (t_method)widget_debug,
+		    gensym("debug"), 0);
+#endif
+    hammerfile_setup(widget_class, 0);
+
+    makeshift_class = class_new(gensym("text"), 0, 0,
+				sizeof(t_text),
+				CLASS_NOINLET | CLASS_PATCHABLE, 0);
+
+    tow_class = class_new(gensym("tow"),
+			  (t_newmethod)tow_new,
+			  (t_method)tow_free,
+			  sizeof(t_tow), 0, A_SYMBOL, A_SYMBOL, A_SYMBOL, 0);
+    class_addbang(tow_class, tow_bang);
+    class_addfloat(tow_class, tow_float);
+    class_addsymbol(tow_class, tow_symbol);
+    class_addanything(tow_class, tow_anything);
+    class_addmethod(tow_class, (t_method)tow__callback,
+		    gensym("_cb"), A_GIMME, 0);
+#ifdef TOW_DEBUG
+    class_addmethod(tow_class, (t_method)tow_debug,
+		    gensym("debug"), 0);
+#endif
+}