g_text.c 91.5 KB
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/* Copyright (c) 1997-1999 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */

/* changes by Thomas Musil IEM KUG Graz Austria 2001 */
/* the methods for calling the gui-objects from menu are implemented */
/* all changes are labeled with      iemlib      */

#include <stdlib.h>
#include "m_pd.h"
#include "m_imp.h"
#include "s_stuff.h"
#include "g_canvas.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
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#include "g_undo.h"
#include "x_preset.h"
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#include "s_utf8.h"

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t_class *text_class;
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t_class *message_class;
static t_class *gatom_class;
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static void text_vis(t_gobj *z, t_glist *glist, int vis);
static void text_displace(t_gobj *z, t_glist *glist,
    int dx, int dy);
static void text_getrect(t_gobj *z, t_glist *glist,
    int *xp1, int *yp1, int *xp2, int *yp2);
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void canvas_howputnew(t_canvas *x, int *connectp, int *xpixp, int *ypixp,
    int *indexp, int *totalp);
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void canvas_startmotion(t_canvas *x);
t_widgetbehavior text_widgetbehavior;

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static char *invalid_fill = "$::pd_colors(dash_fill)";
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extern void canvas_displaceselection(t_canvas *x, int dx, int dy);
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extern void canvas_apply_setundo(t_canvas *x, t_gobj *y);
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extern void canvas_setundo(t_canvas *x, t_undofn undofn, void *buf,
    const char *name);
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extern void *canvas_undo_set_create(t_canvas *x);
extern void canvas_undo_create(t_canvas *x, void *z, int action);
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extern int we_are_undoing;
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extern void glob_preset_node_list_check_loc_and_update(void);
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extern void glob_preset_node_list_seek_hub(void);
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/* ----------------- the "text" object.  ------------------ */

    /* add a "text" object (comment) to a glist.  While this one goes for any
    glist, the other 3 below are for canvases only.  (why?)  This is called
    without args if invoked from the GUI; otherwise at least x and y
    are provided.  */

void glist_text(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
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    if (canvas_hasarray(gl)) return;
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    t_text *x = (t_text *)pd_new(text_class);
    t_atom at;
    x->te_width = 0;                            /* don't know it yet. */
    x->te_type = T_TEXT;
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    x->te_iemgui = 0;
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    x->te_binbuf = binbuf_new();
    if (argc > 1)
    {
        x->te_xpix = atom_getfloatarg(0, argc, argv);
        x->te_ypix = atom_getfloatarg(1, argc, argv);
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        if (argc > 2)
        {
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            binbuf_restore(x->te_binbuf, argc-2, argv+2);
        }
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        else
        {
            SETSYMBOL(&at, gensym("comment"));
            binbuf_restore(x->te_binbuf, 1, &at);
        }
        glist_add(gl, &x->te_g);
    }
    else
    {
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        //int xpix, ypix;
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        int connectme, xpix, ypix, indx, nobj;
        canvas_howputnew(gl, &connectme, &xpix, &ypix, &indx, &nobj);
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        pd_vmess((t_pd *)glist_getcanvas(gl), gensym("editmode"), "i", 1);
        SETSYMBOL(&at, gensym("comment"));
        glist_noselect(gl);
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        //glist_getnextxy(gl, &xpix, &ypix);
        x->te_xpix = xpix;
        x->te_ypix = ypix;
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        binbuf_restore(x->te_binbuf, 1, &at);
        glist_add(gl, &x->te_g);
        glist_noselect(gl);
        glist_select(gl, &x->te_g);
            /* it would be nice to "activate" here, but then the second,
            "put-me-down" click changes the text selection, which is quite
            irritating, so I took this back out.  It's OK in messages
            and objects though since there's no text in them at menu
            creation. */
            /* gobj_activate(&x->te_g, gl, 1); */
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        if (!we_are_undoing)
            canvas_undo_add(glist_getcanvas(gl), 9, "create",
                (void *)canvas_undo_set_create(glist_getcanvas(gl)));
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        if (connectme == 0)
        {
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            canvas_displaceselection(glist_getcanvas(gl), -8, -8);
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            canvas_startmotion(glist_getcanvas(gl));
        }
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    }
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    glob_preset_node_list_seek_hub();
    glob_preset_node_list_check_loc_and_update();
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}

/* ----------------- the "object" object.  ------------------ */

extern t_pd *newest;
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int scalar_in_a_box;
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extern void glist_scalar(t_glist *canvas, t_symbol *s, int argc, t_atom *argv);
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void canvas_getargs(int *argcp, t_atom **argvp);

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static void canvas_objtext(t_glist *gl, int xpix, int ypix,
    int width, int selected,
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    t_binbuf *b)
{
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    //fprintf(stderr,"canvas_objtext\n");
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    t_text *x;
    int argc;
    t_atom *argv;
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    // for hiding arguments
    t_atom *vec;
    int len, i, hidden;
    t_binbuf *hide;
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    newest = 0;
    canvas_setcurrent((t_canvas *)gl);
    canvas_getargs(&argc, &argv);
    binbuf_eval(b, &pd_objectmaker, argc, argv);
    if (binbuf_getnatom(b))
    {
        if (!newest)
        {
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            /* let's see if there's a scalar by this name... */
            t_atom *scalar_at = binbuf_getvec(b);
            if (scalar_at->a_type == A_SYMBOL)
            {
                t_symbol *templatesym = 
                    canvas_makebindsym(atom_getsymbol(scalar_at));
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                t_template *tmpl = template_findbyname(templatesym);
                if (template_findbyname(templatesym) &&
                    template_cancreate(tmpl) &&
                    template_hasxy(tmpl))
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                {
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                    //post("Hmm, found a scalar from struct %s... ",
                    //    templatesym->s_name);
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                    t_binbuf *scalarbuf = binbuf_new();
                    t_atom coords_at[2];
                    SETFLOAT(coords_at, (t_float)xpix);
                    SETFLOAT(coords_at+1, (t_float)ypix);
                    binbuf_add(scalarbuf, 1, scalar_at);
                    binbuf_add(scalarbuf, 2, coords_at);
                    binbuf_add(scalarbuf, binbuf_getnatom(b)-1, scalar_at+1);
                    t_atom *scalar_create_at = binbuf_getvec(scalarbuf);
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                    glist_scalar(gl, gensym("scalar_from_canvas_objtext"),
                        binbuf_getnatom(b)+2, scalar_create_at);
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                    binbuf_free(scalarbuf);
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                    //binbuf_free(b);
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                    canvas_unsetcurrent((t_canvas *)gl);
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                    scalar_in_a_box = 1;
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                    return;
                }
            }
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            binbuf_print(b);
            post("... couldn't create");
            x = 0;
        }
        else if (!(x = pd_checkobject(newest)))
        {
            binbuf_print(b);
            post("... didn't return a patchable object");
        }
    }
    else x = 0;
    if (!x)
    {
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        /* LATER make the color reflect this */
        x = (t_text *)pd_new(text_class);
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        //fprintf(stderr,"creating blank object %lx\n", x);
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    }
    /* special case: an object, like preset_hub, hides its arguments
       beyond the first n, so we modify its binbuf here */
    vec = binbuf_getvec(b);
    len = binbuf_getnatom(b);
    hidden = 0;
    for (i = 0; i < len; i++)
    {
        if (!strcmp("%hidden%", atom_getsymbol(&vec[i])->s_name))
        {
            //fprintf(stderr,"found hidden %d %s\n",
            //    i, atom_getsymbol(&vec[i])->s_name);
            hidden = i;
            break;
        }
    }
    if (hidden)
    {
        hide = binbuf_new();
        binbuf_add(hide, hidden, vec);
        binbuf_free(b);
        b = hide;
    }
    /* done special case */
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    x->te_binbuf = b;
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    x->te_xpix = xpix;
    x->te_ypix = ypix;
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    x->te_width = width;
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    x->te_type = T_OBJECT;
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    /* let's see if iemgui objects did not already set the value to 1,
       otherwise set it explicitly to 0 */
    if (x->te_iemgui != 1)
        x->te_iemgui = 0;
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    glist_add(gl, &x->te_g);
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    if (selected)
    {
            /* this is called if we've been created from the menu. */
        glist_select(gl, &x->te_g);
        gobj_activate(&x->te_g, gl, 1);
    }
    if (pd_class(&x->ob_pd) == vinlet_class)
        canvas_resortinlets(glist_getcanvas(gl));
    if (pd_class(&x->ob_pd) == voutlet_class)
        canvas_resortoutlets(glist_getcanvas(gl));
    canvas_unsetcurrent((t_canvas *)gl);
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    glob_preset_node_list_seek_hub();
    glob_preset_node_list_check_loc_and_update();

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    // here we recreate data buffer inside previously created undo snapshot
    //canvas_undo_create(glist_getcanvas(gl),
    //    glist_getcanvas(gl)->u_last->data, UNDO_FREE);
    //glist_getcanvas(gl)->u_last->data =
    //    canvas_undo_set_create(glist_getcanvas(gl));
    /*if (binbuf_getnatom(x->te_binbuf) && !we_are_undoing) {
        fprintf(stderr,"canvas_objtext calls create undo\n");
        //glist_select(gl, &x->te_g);
        canvas_undo_add(glist_getcanvas(gl), 9, "create",
            (void *)canvas_undo_set_create(glist_getcanvas(gl)));
    }*/
    if ( glist_isvisible( ((t_canvas *)gl) ) )
    {
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        canvas_getscroll(glist_getcanvas(gl));
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    }
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}

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extern int sys_noautopatch;
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extern t_gobj *glist_nth(t_glist *x, int n);
extern int glist_getindex(t_glist *x, t_gobj *y);
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    /* utility routine to figure out where to put a new text box from menu
    and whether to connect to it automatically */
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void canvas_howputnew(t_canvas *x, int *connectp, int *xpixp, int *ypixp,
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    int *indexp, int *totalp)
{
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    int indx = 0, nobj = 0, n2, x1, x2, y1, y2;
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    /*
    int connectme = 0;
    if (x->gl_editor->e_selection &&
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        !x->gl_editor->e_selection->sel_next &&
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        !sys_noautopatch)
    {
        selected = x->gl_editor->e_selection->sel_what;
        t_object *ob = pd_checkobject(&selected->g_pd);
        connectme = (obj_noutlets(ob) ? 1 : 0);
    }*/
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    int connectme = (x->gl_editor->e_selection &&
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        !x->gl_editor->e_selection->sel_next);
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    if (connectme)
    {
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        t_gobj *g, *selected = x->gl_editor->e_selection->sel_what;
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        t_text *t = (t_text *)selected;
        int recreate = 0;
        // if selected object has not yet been activated we need to recreate it first
        if (pd_class(&t->te_pd) == text_class && t->te_type != T_TEXT)
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        {
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            glist_noselect(x); // we do this to explicitly activate object
            glist_select(x, glist_nth(x, glist_getindex(x, 0)-1)); // then reselect it
            selected = x->gl_editor->e_selection->sel_what;
            recreate = 1;
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        }
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        for (g = x->gl_list, nobj = 0; g; g = g->g_next, nobj++)
            if (g == selected)
            {
                gobj_getrect(g, x, &x1, &y1, &x2, &y2);
                indx = nobj;
                *xpixp = x1;
                *ypixp = y2 + 5;
            }
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        glist_noselect(x);
            /* search back for 'selected' and if it isn't on the list, 
                plan just to connect from the last item on the list. */
        for (g = x->gl_list, n2 = 0; g; g = g->g_next, n2++)
        {
            if (g == selected)
            {
                indx = n2;
                break;
            }
            else if (!g->g_next)
                indx = nobj-1;
        }
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        x->gl_editor->e_onmotion = MA_NONE;
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        canvas_getscroll(x);
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    }
    else
    {
        glist_getnextxy(x, xpixp, ypixp);
        glist_noselect(x);
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    }
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    if (sys_noautopatch)
    {
        if (connectme == 1) connectme = -1;
        else connectme = 0;
    }
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    *connectp = connectme;
    *indexp = indx;
    *totalp = nobj;
}

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    /* object creation routine.  These are called without any arguments if
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    they're invoked from the gui; when pasting or restoring from a file, we
    get at least x and y. */
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EXTERN int connect_exception;

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void canvas_obj(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
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    //fprintf(stderr,"canvas_obj\n");
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    if (canvas_hasarray(gl)) return;
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    if (argc >= 2)
    {
        t_binbuf *b = binbuf_new();
        binbuf_restore(b, argc-2, argv+2);
        canvas_objtext(gl, atom_getintarg(0, argc, argv),
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            atom_getintarg(1, argc, argv), 0, 0, b);
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    }
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        /* JMZ: don't go into interactive mode in a closed canvas */
    else if (!glist_isvisible(gl))
        post("unable to create stub object in closed canvas!");
    else
    {
            /* interactively create new obect */
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        t_binbuf *b = binbuf_new();
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        int connectme, xpix, ypix, indx, nobj;
        canvas_howputnew(gl, &connectme, &xpix, &ypix, &indx, &nobj);
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        pd_vmess(&gl->gl_pd, gensym("editmode"), "i", 1);
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        canvas_objtext(gl,
            connectme ? xpix : xpix - 8,
            connectme ? ypix : ypix - 8, 0, 1, b);
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        if (connectme == 1)
        {
            //fprintf(stderr,"canvas_obj calls canvas_connect\n");
            connect_exception = 1;
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            canvas_connect(gl, indx, 0, nobj, 0);
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            connect_exception = 0;
        }
        else if (connectme == 0)
        {
            //fprintf(stderr,"canvas_obj calls canvas_startmotion\n");
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//            canvas_displaceselection(glist_getcanvas(gl), -8, -8);
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            canvas_startmotion(glist_getcanvas(gl));
        }
        //canvas_setundo(glist_getcanvas(gl),
        //    canvas_undo_create, canvas_undo_set_create(gl), "create");
        if (!we_are_undoing)
            canvas_undo_add(glist_getcanvas(gl), 9, "create",
                (void *)canvas_undo_set_create(glist_getcanvas(gl)));
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    }
}

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extern void glist_setlastxy(t_glist *gl, int xval, int yval);

/* invoked from tcl/tk: abstraction_name x_offset y_offset */
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void canvas_obj_abstraction_from_menu(t_glist *gl, t_symbol *s,
    int argc, t_atom *argv)
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{
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    if (canvas_hasarray(gl)) return;
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    //fprintf(stderr,"canvas_abstraction_from_menu\n");
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    //t_text *x;
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    t_gobj *y;
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    t_binbuf *b = binbuf_new();
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    binbuf_restore(b, 2, argv);
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    int connectme, xpix, ypix, indx, nobj;
    canvas_howputnew(gl, &connectme, &xpix, &ypix, &indx, &nobj);
    pd_vmess(&gl->gl_pd, gensym("editmode"), "i", 1);
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#ifdef PDL2ORK
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    if (sys_k12_mode)
        pd_vmess (&gl->gl_pd, gensym("tooltips"), "i", 1);
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#endif
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    canvas_objtext(gl, xpix+atom_getintarg(1, argc, argv),
        ypix+atom_getintarg(2, argc, argv), 0, 1, b);

    // the object is now the last on the glist so we locate it
    // and send it loadbang
    // we know we have at least one object since we just created one
    // so we don't check for y being valid
    y = gl->gl_list;
    while (y->g_next)
        y = y->g_next;
    canvas_loadbang((t_canvas *)y);
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    if (connectme == 1)
    {
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        canvas_connect(gl, indx, 0, nobj, 0);
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    }
    else if (connectme == 0)
    {
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        //glist_setlastxy(glist_getcanvas(gl), xpix, ypix);
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        canvas_startmotion(glist_getcanvas(gl));
    }
    canvas_undo_add(glist_getcanvas(gl), 9, "create",
        (void *)canvas_undo_set_create(glist_getcanvas(gl)));
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}

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/* make an object box for an object that's already there. */

/* iemlib */
void canvas_iemguis(t_glist *gl, t_symbol *guiobjname)
{
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    if (canvas_hasarray(gl)) return;
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    //fprintf(stderr,"canvas_iemguis\n");
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    t_atom at;
    t_binbuf *b = binbuf_new();
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    //int xpix, ypix;

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    if(!strcmp(guiobjname->s_name, "cnv"))
        glist_noselect(gl);
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    int connectme, xpix, ypix, indx, nobj;
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    canvas_howputnew(gl, &connectme, &xpix, &ypix, &indx, &nobj);

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    /* NOT NECESSARY ANY MORE: compensate for the iemgui sliders' xyoffset
       in case of autopatch
    if (connectme)
    {
        if(!strcmp(guiobjname->s_name, "hsl"))
            xpix = xpix + 3;
        else if(!strcmp(guiobjname->s_name, "vsl"))
            ypix = ypix + 2;
        else if(!strcmp(guiobjname->s_name, "vu"))
        {
            xpix = xpix + 1;
            ypix = ypix + 2;
        }
    }*/
    
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    pd_vmess(&gl->gl_pd, gensym("editmode"), "i", 1);
    glist_noselect(gl);
    SETSYMBOL(&at, guiobjname);
    binbuf_restore(b, 1, &at);
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    canvas_objtext(gl, xpix, ypix, 0, 1, b);
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    if (connectme == 1)
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        canvas_connect(gl, indx, 0, nobj, 0);
    //glist_getnextxy(gl, &xpix, &ypix);
    //canvas_objtext(gl, xpix, ypix, 1, b);
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    else if (connectme == 0)
    {
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        canvas_displaceselection(glist_getcanvas(gl), -8, -8);
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        canvas_startmotion(glist_getcanvas(gl));
    }
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    //canvas_setundo(glist_getcanvas(gl),
    //    canvas_undo_create, canvas_undo_set_create(gl), "create");
    canvas_undo_add(glist_getcanvas(gl), 9, "create",
        (void *)canvas_undo_set_create(glist_getcanvas(gl)));
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}

void canvas_bng(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("bng"));
}

void canvas_toggle(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("tgl"));
}

void canvas_vslider(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("vsl"));
}

void canvas_hslider(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("hsl"));
}

void canvas_hdial(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("hdl"));
}

void canvas_vdial(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("vdl"));
}

void canvas_hradio(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("hradio"));
}

void canvas_vradio(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("vradio"));
}

void canvas_vumeter(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("vu"));
}

void canvas_mycnv(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("cnv"));
}

void canvas_numbox(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_iemguis(gl, gensym("nbx"));
}

/* iemlib */

void canvas_objfor(t_glist *gl, t_text *x, int argc, t_atom *argv)
{
    x->te_width = 0;                            /* don't know it yet. */
    x->te_type = T_OBJECT;
    x->te_binbuf = binbuf_new();
    x->te_xpix = atom_getfloatarg(0, argc, argv);
    x->te_ypix = atom_getfloatarg(1, argc, argv);
    if (argc > 2) binbuf_restore(x->te_binbuf, argc-2, argv+2);
    glist_add(gl, &x->te_g);
}

/* ---------------------- the "message" text item ------------------------ */

typedef struct _messresponder
{
    t_pd mr_pd;
    t_outlet *mr_outlet;
} t_messresponder;

typedef struct _message
{
    t_text m_text;
    t_messresponder m_messresponder;
    t_glist *m_glist;
    t_clock *m_clock;
} t_message;

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static t_class *messresponder_class;
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static void messresponder_bang(t_messresponder *x)
{
    outlet_bang(x->mr_outlet);
}

static void messresponder_float(t_messresponder *x, t_float f)
{
    outlet_float(x->mr_outlet, f);
}

static void messresponder_symbol(t_messresponder *x, t_symbol *s)
{
    outlet_symbol(x->mr_outlet, s);
}

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static void messresponder_blob(t_messresponder *x, t_blob *st)
{ /* MP 20070107 blob type */
    outlet_blob(x->mr_outlet, st);
}

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static void messresponder_list(t_messresponder *x, 
    t_symbol *s, int argc, t_atom *argv)
{
    outlet_list(x->mr_outlet, s, argc, argv);
}

static void messresponder_anything(t_messresponder *x,
    t_symbol *s, int argc, t_atom *argv)
{
    outlet_anything(x->mr_outlet, s, argc, argv);
}

static void message_bang(t_message *x)
{
    binbuf_eval(x->m_text.te_binbuf, &x->m_messresponder.mr_pd, 0, 0);
}

static void message_float(t_message *x, t_float f)
{
    t_atom at;
    SETFLOAT(&at, f);
    binbuf_eval(x->m_text.te_binbuf, &x->m_messresponder.mr_pd, 1, &at);
}

static void message_symbol(t_message *x, t_symbol *s)
{
    t_atom at;
    SETSYMBOL(&at, s);
    binbuf_eval(x->m_text.te_binbuf, &x->m_messresponder.mr_pd, 1, &at);
}

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static void message_blob(t_message *x, t_blob *st)
{
    t_atom at;
    SETBLOB(&at, st);
    binbuf_eval(x->m_text.te_binbuf, &x->m_messresponder.mr_pd, 1, &at);
}

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static void message_list(t_message *x, t_symbol *s, int argc, t_atom *argv)
{
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    // TODO: here and elsewhere in the message, do we want $0 to be parsed
    // into canvas instance? Makes sense since there is no such argument,
    // but will this break anything?
    //canvas_setcurrent(x->m_glist);
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    binbuf_eval(x->m_text.te_binbuf, &x->m_messresponder.mr_pd, argc, argv);
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    //canvas_unsetcurrent(x->m_glist);
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}

static void message_set(t_message *x, t_symbol *s, int argc, t_atom *argv)
{
    binbuf_clear(x->m_text.te_binbuf);
    binbuf_add(x->m_text.te_binbuf, argc, argv);
    glist_retext(x->m_glist, &x->m_text);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_add2(t_message *x, t_symbol *s, int argc, t_atom *argv)
{
    binbuf_add(x->m_text.te_binbuf, argc, argv);
    glist_retext(x->m_glist, &x->m_text);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_add(t_message *x, t_symbol *s, int argc, t_atom *argv)
{
    binbuf_add(x->m_text.te_binbuf, argc, argv);
    binbuf_addsemi(x->m_text.te_binbuf);
    glist_retext(x->m_glist, &x->m_text);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_addcomma(t_message *x)
{
    t_atom a;
    SETCOMMA(&a);
    binbuf_add(x->m_text.te_binbuf, 1, &a);
    glist_retext(x->m_glist, &x->m_text);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_addsemi(t_message *x)
{
    message_add(x, 0, 0, 0);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_adddollar(t_message *x, t_floatarg f)
{
    t_atom a;
    int n = f;
    if (n < 0)
        n = 0;
    SETDOLLAR(&a, n);
    binbuf_add(x->m_text.te_binbuf, 1, &a);
    glist_retext(x->m_glist, &x->m_text);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_adddollsym(t_message *x, t_symbol *s)
{
    t_atom a;
    char buf[MAXPDSTRING];
    buf[0] = '$';
    strncpy(buf+1, s->s_name, MAXPDSTRING-2);
    buf[MAXPDSTRING-1] = 0;
    SETDOLLSYM(&a, gensym(buf));
    binbuf_add(x->m_text.te_binbuf, 1, &a);
    glist_retext(x->m_glist, &x->m_text);
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    if (glist_isvisible(glist_getcanvas(x->m_glist)))
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        canvas_getscroll(x->m_glist);
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}

static void message_click(t_message *x,
    t_floatarg xpos, t_floatarg ypos, t_floatarg shift,
        t_floatarg ctrl, t_floatarg alt)
{
    message_float(x, 0);
    if (glist_isvisible(x->m_glist))
    {
        t_rtext *y = glist_findrtext(x->m_glist, &x->m_text);
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        //sys_vgui(".x%lx.c itemconfigure %sR -strokewidth 5\n", 
        //    glist_getcanvas(x->m_glist), rtext_gettag(y));
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        gui_vmess("gui_message_flash", "xsi",
            glist_getcanvas(x->m_glist),
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            rtext_gettag(y), 1);
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        clock_delay(x->m_clock, 120);
    }
}

static void message_tick(t_message *x)
{
    if (glist_isvisible(x->m_glist))
    {
        t_rtext *y = glist_findrtext(x->m_glist, &x->m_text);
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        //sys_vgui(".x%lx.c itemconfigure %sR -strokewidth 1\n",
        //    glist_getcanvas(x->m_glist), rtext_gettag(y));
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        gui_vmess("gui_message_flash", "xsi",
            glist_getcanvas(x->m_glist),
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            rtext_gettag(y), 0);
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    }
}

static void message_free(t_message *x)
{
    clock_free(x->m_clock);
}

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t_pd *pd_mess_from_responder(t_pd *x)
{
    if (pd_class(x) == messresponder_class)
    {
        /* do pointer math to try to get to the container message struct */
        void *tmp = (void *)x - sizeof(t_text);
        /* if it looks like a message, it must be a message */
        if(((t_text *)tmp)->te_pd == message_class)
            return ((t_pd *)tmp);
    }
    return x;
}

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void canvas_msg(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
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    if (canvas_hasarray(gl)) return;
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    /*fprintf(stderr,"canvas_msg\n");
    int i = 0;
    while(i < argc)
    {
        if (argv[i].a_type == A_FLOAT)
            fprintf(stderr," %f", atom_getfloatarg(i, argc, argv));
        else
            fprintf(stderr," %s", atom_getsymbolarg(i, argc, argv)->s_name);
        i++;
    }
    fprintf(stderr,"\n");*/
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    t_message *x = (t_message *)pd_new(message_class);
    x->m_messresponder.mr_pd = messresponder_class;
    x->m_messresponder.mr_outlet = outlet_new(&x->m_text, &s_float);
    x->m_text.te_width = 0;                             /* don't know it yet. */
    x->m_text.te_type = T_MESSAGE;
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    x->m_text.te_iemgui = 0;
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    x->m_text.te_binbuf = binbuf_new();
    x->m_glist = gl;
    x->m_clock = clock_new(x, (t_method)message_tick);
    if (argc > 1)
    {
        x->m_text.te_xpix = atom_getfloatarg(0, argc, argv);
        x->m_text.te_ypix = atom_getfloatarg(1, argc, argv);
        if (argc > 2) binbuf_restore(x->m_text.te_binbuf, argc-2, argv+2);
        glist_add(gl, &x->m_text.te_g);
    }
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    else if (!glist_isvisible(gl))
        post("unable to create stub message in closed canvas!");
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    else
    {
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        int connectme, xpix, ypix, indx, nobj;
        canvas_howputnew(gl, &connectme, &xpix, &ypix, &indx, &nobj);
        
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        pd_vmess(&gl->gl_pd, gensym("editmode"), "i", 1);
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        x->m_text.te_xpix = xpix;
        x->m_text.te_ypix = ypix;
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        glist_add(gl, &x->m_text.te_g);
        glist_noselect(gl);
        glist_select(gl, &x->m_text.te_g);
        gobj_activate(&x->m_text.te_g, gl, 1);
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        if (connectme == 1)
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            canvas_connect(gl, indx, 0, nobj, 0);
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        else if (connectme == 0)
        {
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            canvas_displaceselection(glist_getcanvas(gl), -8, -8);
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            canvas_startmotion(glist_getcanvas(gl));
        }
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        //canvas_setundo(glist_getcanvas(gl),
        //    canvas_undo_create, canvas_undo_set_create(gl), "create");
        canvas_undo_add(glist_getcanvas(gl), 9, "create",
            (void *)canvas_undo_set_create(glist_getcanvas(gl)));
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    }
}

/* ---------------------- the "atom" text item ------------------------ */

#define ATOMBUFSIZE 40
#define ATOM_LABELLEFT 0
#define ATOM_LABELRIGHT 1
#define ATOM_LABELUP 2
#define ATOM_LABELDOWN 3

typedef struct _gatom
{
    t_text a_text;
    t_atom a_atom;          /* this holds the value and the type */
    t_glist *a_glist;       /* owning glist */
    t_float a_toggle;       /* value to toggle to */
    t_float a_draghi;       /* high end of drag range */
    t_float a_draglo;       /* low end of drag range */
    t_symbol *a_label;      /* symbol to show as label next to box */
    t_symbol *a_symfrom;    /* "receive" name -- bind ourselvs to this */
    t_symbol *a_symto;      /* "send" name -- send to this on output */
    char a_buf[ATOMBUFSIZE];/* string buffer for typing */
    char a_shift;           /* was shift key down when dragging started? */
    char a_wherelabel;      /* 0-3 for left, right, above, below */
    t_symbol *a_expanded_to; /* a_symto after $0, $1, ...  expansion */
} t_gatom;

    /* prepend "-" as necessary to avoid empty strings, so we can
    use them in Pd messages.  A more complete solution would be
    to introduce some quoting mechanism; but then we'd be much more
    complicated. */
static t_symbol *gatom_escapit(t_symbol *s)
{
    if (!*s->s_name)
        return (gensym("-"));
    else if (*s->s_name == '-')
    {
        char shmo[100];
        shmo[0] = '-';
        strncpy(shmo+1, s->s_name, 99);
        shmo[99] = 0;
        return (gensym(shmo));
    }
    else return (iemgui_dollar2raute(s));
}

    /* undo previous operation: strip leading "-" if found. */
static t_symbol *gatom_unescapit(t_symbol *s)
{
    if (*s->s_name == '-')
        return (gensym(s->s_name+1));
    else return (iemgui_raute2dollar(s));
}

static void gatom_redraw(t_gobj *client, t_glist *glist)
{
    t_gatom *x = (t_gatom *)client;
    glist_retext(x->a_glist, &x->a_text);
}

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    /* recolor option offers     0 ignore recolor
                                1 recolor */
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static void gatom_retext(t_gatom *x, int senditup, int recolor)
{
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    t_canvas *canvas = glist_getcanvas(x->a_glist);
    t_rtext *y = glist_findrtext(x->a_glist, &x->a_text);
    if (recolor)
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    {
        //sys_vgui(".x%lx.c itemconfigure %s -fill %s\n", canvas, 
        //    rtext_gettag(y), "$pd_colors(text)");
    }
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    binbuf_clear(x->a_text.te_binbuf);
    binbuf_add(x->a_text.te_binbuf, 1, &x->a_atom);
    if (senditup && glist_isvisible(x->a_glist))
        sys_queuegui(x, x->a_glist, gatom_redraw);
}

static void gatom_set(t_gatom *x, t_symbol *s, int argc, t_atom *argv)
{
    t_atom oldatom = x->a_atom;
    int changed = 0;
    if (!argc) return;
    if (x->a_atom.a_type == A_FLOAT)
        x->a_atom.a_w.w_float = atom_getfloat(argv),
            changed = (x->a_atom.a_w.w_float != oldatom.a_w.w_float);
    else if (x->a_atom.a_type == A_SYMBOL)
        x->a_atom.a_w.w_symbol = atom_getsymbol(argv),
            changed = (x->a_atom.a_w.w_symbol != oldatom.a_w.w_symbol);
    if (changed)
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    {
        if (x->a_atom.a_type == A_FLOAT && x->a_text.te_width == 1)
            gatom_retext(x, 1, 1);
        else
            gatom_retext(x, 1, 0);
    }
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    x->a_buf[0] = 0;
}

static void gatom_bang(t_gatom *x)
{
    if (x->a_atom.a_type == A_FLOAT)
    {
        if (x->a_text.te_outlet)
            outlet_float(x->a_text.te_outlet, x->a_atom.a_w.w_float);
        if (*x->a_expanded_to->s_name && x->a_expanded_to->s_thing)
        {
            if (x->a_symto == x->a_symfrom)
                pd_error(x,
                    "%s: atom with same send/receive name (infinite loop)",
                        x->a_symto->s_name);
            else pd_float(x->a_expanded_to->s_thing, x->a_atom.a_w.w_float);
        }
    }
    else if (x->a_atom.a_type == A_SYMBOL)
    {
        if (x->a_text.te_outlet)
            outlet_symbol(x->a_text.te_outlet, x->a_atom.a_w.w_symbol);
        if (*x->a_symto->s_name && x->a_expanded_to->s_thing)
        {
            if (x->a_symto == x->a_symfrom)
                pd_error(x,
                    "%s: atom with same send/receive name (infinite loop)",
                        x->a_symto->s_name);
            else pd_symbol(x->a_expanded_to->s_thing, x->a_atom.a_w.w_symbol);
        }
    }
}

static void gatom_float(t_gatom *x, t_float f)
{
    t_atom at;
    SETFLOAT(&at, f);
    gatom_set(x, 0, 1, &at);
    gatom_bang(x);
}

static void gatom_clipfloat(t_gatom *x, t_float f)
{
    if (x->a_draglo != 0 || x->a_draghi != 0)
    {
        if (f < x->a_draglo)
            f = x->a_draglo;
        if (f > x->a_draghi)
            f = x->a_draghi;
    }
    gatom_float(x, f);
}

static void gatom_symbol(t_gatom *x, t_symbol *s)
{
    t_atom at;
    SETSYMBOL(&at, s);
    gatom_set(x, 0, 1, &at);
    gatom_bang(x);
}

    /* We need a list method because, since there's both an "inlet" and a
    "nofirstin" flag, the standard list behavior gets confused. */
static void gatom_list(t_gatom *x, t_symbol *s, int argc, t_atom *argv)
{
    if (!argc)
        gatom_bang(x);
    else if (argv->a_type == A_FLOAT)
        gatom_float(x, argv->a_w.w_float);
    else if (argv->a_type == A_SYMBOL)
        gatom_symbol(x, argv->a_w.w_symbol);
    else pd_error(x, "gatom_list: need float or symbol");
}

static void gatom_motion(void *z, t_floatarg dx, t_floatarg dy)
{
    t_gatom *x = (t_gatom *)z;
    if (dy == 0) return;
    if (x->a_atom.a_type == A_FLOAT)
    {
        if (x->a_shift)
        {
            double nval = x->a_atom.a_w.w_float - 0.01 * dy;
            double trunc = 0.01 * (floor(100. * nval + 0.5));
            if (trunc < nval + 0.0001 && trunc > nval - 0.0001) nval = trunc;
            gatom_clipfloat(x, nval);
        }
        else
        {
            double nval = x->a_atom.a_w.w_float - dy;
            double trunc = 0.01 * (floor(100. * nval + 0.5));
            if (trunc < nval + 0.0001 && trunc > nval - 0.0001) nval = trunc;
            trunc = floor(nval + 0.5);
            if (trunc < nval + 0.001 && trunc > nval - 0.001) nval = trunc;
            gatom_clipfloat(x, nval);
        }
    }
}

static void gatom_key(void *z, t_floatarg f)
{
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    //fprintf(stderr,"gatom_key %f\n", f);
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    t_gatom *x = (t_gatom *)z;
    int c = f;
    int len = strlen(x->a_buf);
    t_atom at;
    char sbuf[ATOMBUFSIZE + 4];
    if (c == 0)
    {
        /* we're being notified that no more keys will come for this grab */
        if (x->a_buf[0])
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            gatom_retext(x, 1, 1);
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        else
            gatom_retext(x, 0, 1);
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        return;
    }
    else if (c == '\b')
    {
        if (len > 0)
        x->a_buf[len-1] = 0;
        goto redraw;
    }
    else if (c == '\n')
    {
        if (x->a_atom.a_type == A_FLOAT)
            x->a_atom.a_w.w_float = atof(x->a_buf);
        else if (x->a_atom.a_type == A_SYMBOL)
            x->a_atom.a_w.w_symbol = gensym(x->a_buf);
        else bug("gatom_key");
        gatom_bang(x);
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        gatom_retext(x, 1, 1);
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        x->a_buf[0] = 0;
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        glist_grab(x->a_glist, 0, 0, 0, 0, 0);
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    }
    else if (len < (ATOMBUFSIZE-1))
    {
            /* for numbers, only let reasonable characters through */
        if ((x->a_atom.a_type == A_SYMBOL) ||
            (c >= '0' && c <= '9' || c == '.' || c == '-'
                || c == 'e' || c == 'E'))
        {
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            /* the wchar could expand to up to 4 bytes, which
             * which might overrun our a_buf;
             * therefore we first expand into a temporary buffer, 
             * and only if the resulting utf8 string fits into a_buf
             * we apply it
             */
            char utf8[UTF8_MAXBYTES];
            int utf8len = u8_wc_toutf8(utf8, c);
            if((len+utf8len) < (ATOMBUFSIZE-1))
            {
                int j=0;
                for(j=0; j<utf8len; j++)
                    x->a_buf[len+j] = utf8[j];
                 
                x->a_buf[len+utf8len] = 0;
            }
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            goto redraw;
        }
    }
    return;
redraw:
        /* LATER figure out how to avoid creating all these symbols! */
    sprintf(sbuf, "%s...", x->a_buf);
    SETSYMBOL(&at, gensym(sbuf));
    binbuf_clear(x->a_text.te_binbuf);
    binbuf_add(x->a_text.te_binbuf, 1, &at);
    glist_retext(x->a_glist, &x->a_text);
}

static void gatom_click(t_gatom *x,
    t_floatarg xpos, t_floatarg ypos, t_floatarg shift, t_floatarg ctrl,
    t_floatarg alt)
{
    if (x->a_text.te_width == 1)
    {
        if (x->a_atom.a_type == A_FLOAT)
            gatom_float(x, (x->a_atom.a_w.w_float == 0));
    }
    else
    {
        if (alt)
        {
            if (x->a_atom.a_type != A_FLOAT) return;
            if (x->a_atom.a_w.w_float != 0)
            {
                x->a_toggle = x->a_atom.a_w.w_float;
                gatom_float(x, 0);
            }
            else gatom_float(x, x->a_toggle);
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            gatom_retext(x, 0, 1);
            return;
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        }
        x->a_shift = shift;
        x->a_buf[0] = 0;
        glist_grab(x->a_glist, &x->a_text.te_g, gatom_motion, gatom_key,
            xpos, ypos);
    }
}

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EXTERN int glist_getindex(t_glist *x, t_gobj *y);
EXTERN int canvas_apply_restore_original_position(t_canvas *x, int pos);

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    /* message back from dialog window */
static void gatom_param(t_gatom *x, t_symbol *sel, int argc, t_atom *argv)
{
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    canvas_apply_setundo(x->a_glist, (t_gobj *)x);
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    t_float width = atom_getfloatarg(0, argc, argv);
    t_float draglo = atom_getfloatarg(1, argc, argv);
    t_float draghi = atom_getfloatarg(2, argc, argv);
    t_symbol *label = gatom_unescapit(atom_getsymbolarg(3, argc, argv));
    t_float wherelabel = atom_getfloatarg(4, argc, argv);
    t_symbol *symfrom = gatom_unescapit(atom_getsymbolarg(5, argc, argv));
    t_symbol *symto = gatom_unescapit(atom_getsymbolarg(6, argc, argv));

    gobj_vis(&x->a_text.te_g, x->a_glist, 0);
    if (!*symfrom->s_name && *x->a_symfrom->s_name)
        inlet_new(&x->a_text, &x->a_text.te_pd, 0, 0);
    else if (*symfrom->s_name && !*x->a_symfrom->s_name && x->a_text.te_inlet)
    {
        canvas_deletelinesforio(x->a_glist, &x->a_text,
            x->a_text.te_inlet, 0);
        inlet_free(x->a_text.te_inlet);
    }
    if (!*symto->s_name && *x->a_symto->s_name)
        outlet_new(&x->a_text, 0);
    else if (*symto->s_name && !*x->a_symto->s_name && x->a_text.te_outlet)
    {
        canvas_deletelinesforio(x->a_glist, &x->a_text,
            0, x->a_text.te_outlet);
        outlet_free(x->a_text.te_outlet);
    }
    if (draglo >= draghi)
        draglo = draghi = 0;
    x->a_draglo = draglo;
    x->a_draghi = draghi;
    if (width < 0)
        width = 4;
    else if (width > 80)
        width = 80;
    x->a_text.te_width = width;
    x->a_wherelabel = ((int)wherelabel & 3);
    x->a_label = label;
    if (*x->a_symfrom->s_name)
        pd_unbind(&x->a_text.te_pd,
            canvas_realizedollar(x->a_glist, x->a_symfrom));
    x->a_symfrom = symfrom;
    if (*x->a_symfrom->s_name)
        pd_bind(&x->a_text.te_pd,
            canvas_realizedollar(x->a_glist, x->a_symfrom));
    x->a_symto = symto;
    x->a_expanded_to = canvas_realizedollar(x->a_glist, x->a_symto);
    gobj_vis(&x->a_text.te_g, x->a_glist, 1);
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    gobj_select(&x->a_text.te_g, x->a_glist, 1);
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    canvas_dirty(x->a_glist, 1);
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    canvas_getscroll(x->a_glist);
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    /* glist_retext(x->a_glist, &x->a_text); */
}

    /* ---------------- gatom-specific widget functions --------------- */

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static void gatom_getwherelabel(t_gatom *x, t_glist *glist, int *xp, int *yp)
{
    int x1, y1, x2, y2;
    text_getrect(&x->a_text.te_g, glist, &x1, &y1, &x2, &y2);
    if (x->a_wherelabel == ATOM_LABELLEFT)
    {
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        *xp = -3 -
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            strlen(canvas_realizedollar(x->a_glist, x->a_label)->s_name) *
            sys_fontwidth(glist_getfont(glist));
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        *yp = y2 - y1 - 4;
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    }
    else if (x->a_wherelabel == ATOM_LABELRIGHT)
    {
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        *xp = x2 - x1 + 3;
        *yp = y2 - y1 - 4;
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    }
    else if (x->a_wherelabel == ATOM_LABELUP)
    {
        *xp = -1;
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        *yp = -3;
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    }
    else
    {
        *xp = -1;
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        *yp = y2 - y1 + sys_fontheight(glist_getfont(glist));
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    }
}


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static void gatom_displace(t_gobj *z, t_glist *glist,
    int dx, int dy)
{
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    //fprintf(stderr,"gatom_displace\n");
    t_gatom *x = (t_gatom*)z;
    text_displace(z, glist, dx, dy);
    if (glist_isvisible(glist))
    {
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        //sys_vgui(".x%lx.c move %lx.l %d %d\n", glist_getcanvas(glist), 
        //    x, dx, dy);
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    }
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}

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/* for gatom's label */
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static void gatom_vis(t_gobj *z, t_glist *glist, int vis)
{
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    //fprintf(stderr,"gatom_vis\n");
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    t_gatom *x = (t_gatom*)z;
    text_vis(z, glist, vis);
    if (*x->a_label->s_name)
    {
        if (vis)
        {
            int x1, y1;
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            t_rtext *y = glist_findrtext(x->a_glist, &x->a_text);
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            gatom_getwherelabel(x, glist, &x1, &y1);
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            //sys_vgui("pdtk_text_new .x%lx.c %lx.l %f %f {%s} %d %s\n",
            //    glist_getcanvas(glist), x,
            //    (double)x1, (double)y1,
            //    canvas_realizedollar(x->a_glist, x->a_label)->s_name,
            //    sys_hostfontsize(glist_getfont(glist)),
            //    "$pd_colors(text)");
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            gui_vmess("gui_text_new", "xssiiisi",
                glist_getcanvas(glist),
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                rtext_gettag(y),
                "gatom",
                0,
                x1, // left margin
                y1, // top margin
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                canvas_realizedollar(x->a_glist, x->a_label)->s_name,
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                sys_hostfontsize(glist_getfont(glist))
            );


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        }
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        else
        {
            /* We're just deleting the parent gobj in the GUI, which takes
               care of removing all the children. So we don't need to send
               a message here */
            //sys_vgui(".x%lx.c delete %lx.l\n", glist_getcanvas(glist), x);
        }
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    }
    if (!vis)
        sys_unqueuegui(x);
}

void canvas_atom(t_glist *gl, t_atomtype type,
    t_symbol *s, int argc, t_atom *argv)
{
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    if (canvas_hasarray(gl)) return;
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    //fprintf(stderr,"canvas_atom\n");
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    t_gatom *x = (t_gatom *)pd_new(gatom_class);
    t_atom at;
    x->a_text.te_width = 0;                        /* don't know it yet. */
    x->a_text.te_type = T_ATOM;
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    x->a_text.te_iemgui = 0;
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    x->a_text.te_binbuf = binbuf_new();
    x->a_glist = gl;
    x->a_atom.a_type = type;
    x->a_toggle = 1;
    x->a_draglo = 0;
    x->a_draghi = 0;
    x->a_wherelabel = 0;
    x->a_label = &s_;
    x->a_symfrom = &s_;
    x->a_symto = x->a_expanded_to = &s_;
    if (type == A_FLOAT)
    {
        x->a_atom.a_w.w_float = 0;
        x->a_text.te_width = 5;
        SETFLOAT(&at, 0);
    }
    else
    {
        x->a_atom.a_w.w_symbol = &s_symbol;
        x->a_text.te_width = 10;
        SETSYMBOL(&at, &s_symbol);
    }
    binbuf_add(x->a_text.te_binbuf, 1, &at);
    if (argc > 1)
        /* create from file. x, y, width, low-range, high-range, flags,
            label, receive-name, send-name */
    {
        x->a_text.te_xpix = atom_getfloatarg(0, argc, argv);
        x->a_text.te_ypix = atom_getfloatarg(1, argc, argv);
        x->a_text.te_width = atom_getintarg(2, argc, argv);
            /* sanity check because some very old patches have trash in this
            field... remove this in 2003 or so: */
        if (x->a_text.te_width < 0 || x->a_text.te_width > 500)
            x->a_text.te_width = 4;
        x->a_draglo = atom_getfloatarg(3, argc, argv);
        x->a_draghi = atom_getfloatarg(4, argc, argv);
        x->a_wherelabel = (((int)atom_getfloatarg(5, argc, argv)) & 3);
        x->a_label = gatom_unescapit(atom_getsymbolarg(6, argc, argv));
        x->a_symfrom = gatom_unescapit(atom_getsymbolarg(7, argc, argv));
        if (*x->a_symfrom->s_name)
            pd_bind(&x->a_text.te_pd,
                canvas_realizedollar(x->a_glist, x->a_symfrom));

        x->a_symto = gatom_unescapit(atom_getsymbolarg(8, argc, argv));
        x->a_expanded_to = canvas_realizedollar(x->a_glist, x->a_symto);
        if (x->a_symto == &s_)
            outlet_new(&x->a_text,
                x->a_atom.a_type == A_FLOAT ? &s_float: &s_symbol);
        if (x->a_symfrom == &s_)
            inlet_new(&x->a_text, &x->a_text.te_pd, 0, 0);
        glist_add(gl, &x->a_text.te_g);
    }
    else
    {
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        int connectme, xpix, ypix, indx, nobj;
        canvas_howputnew(gl, &connectme, &xpix, &ypix, &indx, &nobj);
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        outlet_new(&x->a_text,
            x->a_atom.a_type == A_FLOAT ? &s_float: &s_symbol);
        inlet_new(&x->a_text, &x->a_text.te_pd, 0, 0);
        pd_vmess(&gl->gl_pd, gensym("editmode"), "i", 1);
        x->a_text.te_xpix = xpix;
        x->a_text.te_ypix = ypix;
        glist_add(gl, &x->a_text.te_g);
        glist_noselect(gl);
        glist_select(gl, &x->a_text.te_g);
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        if (connectme == 1)
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            canvas_connect(gl, indx, 0, nobj, 0);
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        else if (connectme == 0)
        {
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            canvas_displaceselection(glist_getcanvas(gl), -8, -8);
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            canvas_startmotion(glist_getcanvas(gl));
        }
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        //canvas_setundo(glist_getcanvas(gl),
        //    canvas_undo_create, canvas_undo_set_create(gl), "create");
        canvas_undo_add(glist_getcanvas(gl), 9, "create",
            (void *)canvas_undo_set_create(glist_getcanvas(gl)));
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    }
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    glob_preset_node_list_seek_hub();
    glob_preset_node_list_check_loc_and_update();    
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}

void canvas_floatatom(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_atom(gl, A_FLOAT, s, argc, argv);
}

void canvas_symbolatom(t_glist *gl, t_symbol *s, int argc, t_atom *argv)
{
    canvas_atom(gl, A_SYMBOL, s, argc, argv);
}

static void gatom_free(t_gatom *x)
{
    if (*x->a_symfrom->s_name)
        pd_unbind(&x->a_text.te_pd,
            canvas_realizedollar(x->a_glist, x->a_symfrom));
    gfxstub_deleteforkey(x);
}

static void gatom_properties(t_gobj *z, t_glist *owner)
{
    t_gatom *x = (t_gatom *)z;
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    //char buf[200];
    //sprintf(buf, "pdtk_gatom_dialog %%s %d %g %g %d {%s} {%s} {%s}\n",
    //    x->a_text.te_width, x->a_draglo, x->a_draghi,
    //        x->a_wherelabel, gatom_escapit(x->a_label)->s_name,
    //            gatom_escapit(x->a_symfrom)->s_name,
    //                gatom_escapit(x->a_symto)->s_name);
    //gfxstub_new(&x->a_text.te_pd, x, buf);
    gui_start_vmess("gui_gatom_dialog", "s",
        gfxstub_new2(&x->a_text.te_pd, x));
    gui_start_array();
    gui_s("width");    gui_i(x->a_text.te_width);
    gui_s("draglo");   gui_f(x->a_draglo);
    gui_s("draghi");   gui_f(x->a_draghi);
    gui_s("labelpos"); gui_i(x->a_wherelabel);
    gui_s("label");    gui_s(gatom_escapit(x->a_label)->s_name);
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    gui_s("receive-symbol");  gui_s(gatom_escapit(x->a_symfrom)->s_name);
    gui_s("send-symbol");     gui_s(gatom_escapit(x->a_symto)->s_name);
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    gui_end_array();
    gui_end_vmess();
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}

/* -------------------- widget behavior for text objects ------------ */

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/* variant of the glist_findrtext found in g_rtext.c 
   that does not throw a consistency check */
extern t_rtext *glist_tryfindrtext(t_glist *gl, t_text *who);

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static void text_getrect(t_gobj *z, t_glist *glist,
    int *xp1, int *yp1, int *xp2, int *yp2)
{
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    //fprintf(stderr,"text_getrect\n");
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    t_text *x = (t_text *)z;
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    int width = 0, height = 0, iscomment = (x->te_type == T_TEXT);
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    t_float x1, y1, x2, y2;
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        /* for number boxes, we know width and height a priori, and should
        report them here so that graphs can get swelled to fit. */
    
    if (x->te_type == T_ATOM && x->te_width > 0)
    {
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        //fprintf(stderr,"    T_ATOM\n");
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        int font = glist_getfont(glist);
        int fontwidth = sys_fontwidth(font), fontheight = sys_fontheight(font);
        width = (x->te_width > 0 ? x->te_width : 6) * fontwidth + 2;
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        height = fontheight + 3; /* borrowed from TMARGIN, etc, in g_rtext.c */
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    }
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    // jsarlo
    else if (strcmp("magicGlass", class_getname(x->ob_pd)) == 0)
    {
        width = 0;
        height = 0;
    }
    // end jsarlo
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    else if (x->te_type == T_TEXT)
    {
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        //fprintf(stderr,"    T_TEXT\n");
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        t_rtext *y = glist_findrtext(glist, x);
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        if (y)
        {
            width = rtext_width(y);
            height = rtext_height(y);
        }
        else
        {
            width = height = 10;
        }
        //fprintf(stderr,"T_TEXT width=%d height=%d\n", width, height);
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    }
        /* if we're invisible we don't know our size so we just lie about
        it.  This is called on invisible boxes to establish order of inlets
        and possibly other reasons.
           To find out if the box is visible we can't just check the "vis"
        flag because we might be within the vis() routine and not have set
        that yet.  So we check directly whether the "rtext" list has been
        built.  LATER reconsider when "vis" flag should be on and off? */
    else if (glist->gl_editor && glist->gl_editor->e_rtext)
    {
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        t_rtext *y = glist_tryfindrtext(glist, x);
        if (y)
        {
            width = rtext_width(y);
            height = rtext_height(y) - (iscomment << 1);
        }
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        //fprintf(stderr,"rtext width=%d height=%d\n", width, height);