g_template.c 256 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.  */

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
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#include <math.h>  /* for matrix transforms */
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#include "m_pd.h"
#include "s_stuff.h"    /* for sys_hostfontsize */
#include "g_canvas.h"

void array_redraw(t_array *a, t_glist *glist);
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void graph_graphrect(t_gobj *z, t_glist *glist,
    int *xp1, int *yp1, int *xp2, int *yp2);
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/*
This file contains text objects you would put in a canvas to define a
template.  Templates describe objects of type "array" (g_array.c) and
"scalar" (g_scalar.c).
*/

    /* the structure of a "struct" object (also the obsolete "gtemplate"
    you get when using the name "template" in a box.) */

struct _gtemplate
{
    t_object x_obj;
    t_template *x_template;
    t_canvas *x_owner;
    t_symbol *x_sym;
    struct _gtemplate *x_next;
    int x_argc;
    t_atom *x_argv;
};

/* ---------------- forward definitions ---------------- */

static void template_conformarray(t_template *tfrom, t_template *tto,
    int *conformaction, t_array *a);
static void template_conformglist(t_template *tfrom, t_template *tto,
    t_glist *glist,  int *conformaction);
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t_canvas *canvas_templatecanvas_forgroup(t_canvas *c);
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static int drawimage_getindex(void *z, t_template *template, t_word *data);
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/* ---------------------- storage ------------------------- */

static t_class *gtemplate_class;
static t_class *template_class;

/* there's a pre-defined "float" template.  LATER should we bind this
to a symbol such as "pd-float"??? */

    /* return true if two dataslot definitions match */
static int dataslot_matches(t_dataslot *ds1, t_dataslot *ds2,
    int nametoo)
{
    return ((!nametoo || ds1->ds_name == ds2->ds_name) &&
        ds1->ds_type == ds2->ds_type &&
            (ds1->ds_type != DT_ARRAY ||
                ds1->ds_arraytemplate == ds2->ds_arraytemplate));
}

/* -- templates, the active ingredient in gtemplates defined below. ------- */

t_template *template_new(t_symbol *templatesym, int argc, t_atom *argv)
{
    t_template *x = (t_template *)pd_new(template_class);
    x->t_n = 0;
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    x->t_transformable = 0;
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    x->t_vec = (t_dataslot *)t_getbytes(0);
    while (argc > 0)
    {
        int newtype, oldn, newn;
        t_symbol *newname, *newarraytemplate = &s_, *newtypesym;
        if (argc < 2 || argv[0].a_type != A_SYMBOL ||
            argv[1].a_type != A_SYMBOL)
                goto bad;
        newtypesym = argv[0].a_w.w_symbol;
        newname = argv[1].a_w.w_symbol;
        if (newtypesym == &s_float)
            newtype = DT_FLOAT;
        else if (newtypesym == &s_symbol)
            newtype = DT_SYMBOL;
        else if (newtypesym == &s_list)
            newtype = DT_LIST;
        else if (newtypesym == gensym("array"))
        {
            if (argc < 3 || argv[2].a_type != A_SYMBOL)
            {
                pd_error(x, "array lacks element template or name");
                goto bad;
            }
            newarraytemplate = canvas_makebindsym(argv[2].a_w.w_symbol);
            newtype = DT_ARRAY;
            argc--;
            argv++;
        }
        else
        {
            pd_error(x, "%s: no such type", newtypesym->s_name);
            goto bad;
        }
        newn = (oldn = x->t_n) + 1;
        x->t_vec = (t_dataslot *)t_resizebytes(x->t_vec,
            oldn * sizeof(*x->t_vec), newn * sizeof(*x->t_vec));
        x->t_n = newn;
        x->t_vec[oldn].ds_type = newtype;
        x->t_vec[oldn].ds_name = newname;
        x->t_vec[oldn].ds_arraytemplate = newarraytemplate;
    bad: 
        argc -= 2; argv += 2;
    }
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    if (*templatesym->s_name)
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    {
        x->t_sym = templatesym;
        pd_bind(&x->t_pdobj, x->t_sym);
    }
    else x->t_sym = templatesym;
    return (x);
}

int template_size(t_template *x)
{
    return (x->t_n * sizeof(t_word));
}

int template_find_field(t_template *x, t_symbol *name, int *p_onset,
    int *p_type, t_symbol **p_arraytype)
{
    t_template *t;
    int i, n;
    if (!x)
    {
        bug("template_find_field");
        return (0);
    }
    n = x->t_n;
    for (i = 0; i < n; i++)
        if (x->t_vec[i].ds_name == name)
    {
        *p_onset = i * sizeof(t_word);
        *p_type = x->t_vec[i].ds_type;
        *p_arraytype = x->t_vec[i].ds_arraytemplate;
        return (1);
    }
    return (0);
}

t_float template_getfloat(t_template *x, t_symbol *fieldname, t_word *wp,
    int loud)
{
    int onset, type;
    t_symbol *arraytype;
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    t_float val = 0;
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    if (template_find_field(x, fieldname, &onset, &type, &arraytype))
    {
        if (type == DT_FLOAT)
            val = *(t_float *)(((char *)wp) + onset);
        else if (loud) error("%s.%s: not a number",
            x->t_sym->s_name, fieldname->s_name);
    }
    else if (loud) error("%s.%s: no such field",
        x->t_sym->s_name, fieldname->s_name);
    return (val);
}

void template_setfloat(t_template *x, t_symbol *fieldname, t_word *wp, 
    t_float f, int loud)
{
    int onset, type;
    t_symbol *arraytype;
    if (template_find_field(x, fieldname, &onset, &type, &arraytype))
     {
        if (type == DT_FLOAT)
            *(t_float *)(((char *)wp) + onset) = f;
        else if (loud) error("%s.%s: not a number",
            x->t_sym->s_name, fieldname->s_name);
    }
    else if (loud) error("%s.%s: no such field",
        x->t_sym->s_name, fieldname->s_name);
}

t_symbol *template_getsymbol(t_template *x, t_symbol *fieldname, t_word *wp,
    int loud)
{
    int onset, type;
    t_symbol *arraytype;
    t_symbol *val = &s_;
    if (template_find_field(x, fieldname, &onset, &type, &arraytype))
    {
        if (type == DT_SYMBOL)
            val = *(t_symbol **)(((char *)wp) + onset);
        else if (loud) error("%s.%s: not a symbol",
            x->t_sym->s_name, fieldname->s_name);
    }
    else if (loud) error("%s.%s: no such field",
        x->t_sym->s_name, fieldname->s_name);
    return (val);
}

void template_setsymbol(t_template *x, t_symbol *fieldname, t_word *wp, 
    t_symbol *s, int loud)
{
    int onset, type;
    t_symbol *arraytype;
    if (template_find_field(x, fieldname, &onset, &type, &arraytype))
     {
        if (type == DT_SYMBOL)
            *(t_symbol **)(((char *)wp) + onset) = s;
        else if (loud) error("%s.%s: not a symbol",
            x->t_sym->s_name, fieldname->s_name);
    }
    else if (loud) error("%s.%s: no such field",
        x->t_sym->s_name, fieldname->s_name);
}

    /* stringent check to see if a "saved" template, x2, matches the current
        one (x1).  It's OK if x1 has additional scalar elements but not (yet)
        arrays or lists.  This is used for reading in "data files". */
int template_match(t_template *x1, t_template *x2)
{
    int i;
    if (x1->t_n < x2->t_n)
        return (0);
    for (i = x2->t_n; i < x1->t_n; i++)
    {
        if (x1->t_vec[i].ds_type == DT_ARRAY || 
            x1->t_vec[i].ds_type == DT_LIST)
                return (0);
    }
    if (x2->t_n > x1->t_n)
        post("add elements...");
    for (i = 0; i < x2->t_n; i++)
        if (!dataslot_matches(&x1->t_vec[i], &x2->t_vec[i], 1))
            return (0);
    return (1);
}

/* --------------- CONFORMING TO CHANGES IN A TEMPLATE ------------ */

/* the following routines handle updating scalars to agree with changes
in their template.  The old template is assumed to be the "installed" one
so we can delete old items; but making new ones we have to avoid scalar_new
which would make an old one whereas we will want a new one (but whose array
elements might still be old ones.)
    LATER deal with graphics updates too... */

    /* conform the word vector of a scalar to the new template */    
static void template_conformwords(t_template *tfrom, t_template *tto,
    int *conformaction, t_word *wfrom, t_word *wto)
{
    int nfrom = tfrom->t_n, nto = tto->t_n, i;
    for (i = 0; i < nto; i++)
    {
        if (conformaction[i] >= 0)
        {
                /* we swap the two, in case it's an array or list, so that
                when "wfrom" is deleted the old one gets cleaned up. */
            t_word wwas = wto[i];
            wto[i] = wfrom[conformaction[i]];
            wfrom[conformaction[i]] = wwas;
        }
    }
}

    /* conform a scalar, recursively conforming sublists and arrays  */
static t_scalar *template_conformscalar(t_template *tfrom, t_template *tto,
    int *conformaction, t_glist *glist, t_scalar *scfrom)
{
    t_scalar *x;
    t_gpointer gp;
    int nto = tto->t_n, nfrom = tfrom->t_n, i;
    t_template *scalartemplate;
    /* post("conform scalar"); */
        /* possibly replace the scalar */
    if (scfrom->sc_template == tfrom->t_sym)
    {
            /* see scalar_new() for comment about the gpointer. */
        gpointer_init(&gp);
        x = (t_scalar *)getbytes(sizeof(t_scalar) +
            (tto->t_n - 1) * sizeof(*x->sc_vec));
        x->sc_gobj.g_pd = scalar_class;
        x->sc_template = tfrom->t_sym;
        gpointer_setglist(&gp, glist, x);
            /* Here we initialize to the new template, but array and list
            elements will still belong to old template. */
        word_init(x->sc_vec, tto, &gp);

        template_conformwords(tfrom, tto, conformaction,
            scfrom->sc_vec, x->sc_vec);
            
            /* replace the old one with the new one in the list */
        if (glist->gl_list == &scfrom->sc_gobj)
        {
            glist->gl_list = &x->sc_gobj;
            x->sc_gobj.g_next = scfrom->sc_gobj.g_next;
        }
        else
        {
            t_gobj *y, *y2;
            for (y = glist->gl_list; y2 = y->g_next; y = y2)
                if (y2 == &scfrom->sc_gobj)
            {
                x->sc_gobj.g_next = y2->g_next;
                y->g_next = &x->sc_gobj;
                goto nobug;
            }
            bug("template_conformscalar");
        nobug: ;
        }
            /* burn the old one */
        pd_free(&scfrom->sc_gobj.g_pd);
        scalartemplate = tto;
    }
    else
    {
        x = scfrom;
        scalartemplate = template_findbyname(x->sc_template);
    }
        /* convert all array elements and sublists */
    for (i = 0; i < scalartemplate->t_n; i++)
    {
        t_dataslot *ds = scalartemplate->t_vec + i;
        if (ds->ds_type == DT_LIST)
        {
            t_glist *gl2 = x->sc_vec[i].w_list;
            template_conformglist(tfrom, tto, gl2, conformaction);
        }
        else if (ds->ds_type == DT_ARRAY)
        {
            template_conformarray(tfrom, tto, conformaction, 
                x->sc_vec[i].w_array);
        }
    }
    return (x);
}

    /* conform an array, recursively conforming sublists and arrays  */
static void template_conformarray(t_template *tfrom, t_template *tto,
    int *conformaction, t_array *a)
{
    int i, j;
    t_template *scalartemplate = 0;
    if (a->a_templatesym == tfrom->t_sym)
    {
        /* the array elements must all be conformed */
        int oldelemsize = sizeof(t_word) * tfrom->t_n,
            newelemsize = sizeof(t_word) * tto->t_n;
        char *newarray = getbytes(newelemsize * a->a_n);
        char *oldarray = a->a_vec;
        if (a->a_elemsize != oldelemsize)
            bug("template_conformarray");
        for (i = 0; i < a->a_n; i++)
        {
            t_word *wp = (t_word *)(newarray + newelemsize * i);
            word_init(wp, tto, &a->a_gp);
            template_conformwords(tfrom, tto, conformaction,
                (t_word *)(oldarray + oldelemsize * i), wp);
            word_free((t_word *)(oldarray + oldelemsize * i), tfrom);
        }
        scalartemplate = tto;
        a->a_vec = newarray;
        freebytes(oldarray, oldelemsize * a->a_n);
    }
    else scalartemplate = template_findbyname(a->a_templatesym);
        /* convert all arrays and sublist fields in each element of the array */
    for (i = 0; i < a->a_n; i++)
    {
        t_word *wp = (t_word *)(a->a_vec + sizeof(t_word) * a->a_n * i);
        for (j = 0; j < scalartemplate->t_n; j++)
        {
            t_dataslot *ds = scalartemplate->t_vec + j;
            if (ds->ds_type == DT_LIST)
            {
                t_glist *gl2 = wp[j].w_list;
                template_conformglist(tfrom, tto, gl2, conformaction);
            }
            else if (ds->ds_type == DT_ARRAY)
            {
                template_conformarray(tfrom, tto, conformaction, 
                    wp[j].w_array);
            }
        }
    }
}

    /* this routine searches for every scalar in the glist that belongs
    to the "from" template and makes it belong to the "to" template.  Descend
    glists recursively.
    We don't handle redrawing here; this is to be filled in LATER... */

t_array *garray_getarray(t_garray *x);

static void template_conformglist(t_template *tfrom, t_template *tto,
    t_glist *glist,  int *conformaction)
{
    t_gobj *g;
    /* post("conform glist %s", glist->gl_name->s_name); */
    for (g = glist->gl_list; g; g = g->g_next)
    {
        if (pd_class(&g->g_pd) == scalar_class)
            g = &template_conformscalar(tfrom, tto, conformaction,
                glist, (t_scalar *)g)->sc_gobj;
        else if (pd_class(&g->g_pd) == canvas_class)
            template_conformglist(tfrom, tto, (t_glist *)g, conformaction);
        else if (pd_class(&g->g_pd) == garray_class)
            template_conformarray(tfrom, tto, conformaction,
                garray_getarray((t_garray *)g));
    }
}

    /* globally conform all scalars from one template to another */ 
void template_conform(t_template *tfrom, t_template *tto)
{
    int nto = tto->t_n, nfrom = tfrom->t_n, i, j,
        *conformaction = (int *)getbytes(sizeof(int) * nto),
        *conformedfrom = (int *)getbytes(sizeof(int) * nfrom), doit = 0;
    for (i = 0; i < nto; i++)
        conformaction[i] = -1;
    for (i = 0; i < nfrom; i++)
        conformedfrom[i] = 0;
    for (i = 0; i < nto; i++)
    {
        t_dataslot *dataslot = &tto->t_vec[i];
        for (j = 0; j < nfrom; j++)
        {
            t_dataslot *dataslot2 = &tfrom->t_vec[j];
            if (dataslot_matches(dataslot, dataslot2, 1))
            {
                conformaction[i] = j;
                conformedfrom[j] = 1;
            }
        }
    }
    for (i = 0; i < nto; i++)
        if (conformaction[i] < 0)
    {
        t_dataslot *dataslot = &tto->t_vec[i];
        for (j = 0; j < nfrom; j++)
            if (!conformedfrom[j] &&
                dataslot_matches(dataslot, &tfrom->t_vec[j], 0))
        {
            conformaction[i] = j;
            conformedfrom[j] = 1;
        }
    }
    if (nto != nfrom)
        doit = 1;
    else for (i = 0; i < nto; i++)
        if (conformaction[i] != i)
            doit = 1;

    if (doit)
    {
        t_glist *gl;
        post("conforming template '%s' to new structure",
            tfrom->t_sym->s_name);
        for (i = 0; i < nto; i++)
            post("... %d", conformaction[i]);
        for (gl = canvas_list; gl; gl = gl->gl_next)
            template_conformglist(tfrom, tto, gl, conformaction);
    }
    freebytes(conformaction, sizeof(int) * nto);
    freebytes(conformedfrom, sizeof(int) * nfrom);
}

t_template *template_findbyname(t_symbol *s)
{
    return ((t_template *)pd_findbyclass(s, template_class));
}

t_canvas *template_findcanvas(t_template *template)
{
    t_gtemplate *gt;
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    if (!template)
    {
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        bug("template_findcanvas");
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        return (0);
    }
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    if (!(gt = template->t_list))
        return (0);
    return (gt->x_owner);
    /* return ((t_canvas *)pd_findbyclass(template->t_sym, canvas_class)); */
}

void template_notify(t_template *template, t_symbol *s, int argc, t_atom *argv)
{
    if (template->t_list)
        outlet_anything(template->t_list->x_obj.ob_outlet, s, argc, argv);
}

    /* bash the first of (argv) with a pointer to a scalar, and send on
    to template as a notification message */
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void template_notifyforscalar(t_template *template, t_glist *owner,
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    t_scalar *sc, t_symbol *s, int argc, t_atom *argv)
{
    t_gpointer gp;
    gpointer_init(&gp);
    gpointer_setglist(&gp, owner, sc);
    SETPOINTER(argv, &gp);
    template_notify(template, s, argc, argv);
    gpointer_unset(&gp);
}

    /* call this when reading a patch from a file to declare what templates
    we'll need.  If there's already a template, check if it matches.
    If it doesn't it's still OK as long as there are no "struct" (gtemplate)
    objects hanging from it; we just conform everyone to the new template.
    If there are still struct objects belonging to the other template, we're
    in trouble.  LATER we'll figure out how to conform the new patch's objects
    to the pre-existing struct. */
static void *template_usetemplate(void *dummy, t_symbol *s,
    int argc, t_atom *argv)
{
    t_template *x;
    t_symbol *templatesym =
        canvas_makebindsym(atom_getsymbolarg(0, argc, argv));
    if (!argc)
        return (0);
    argc--; argv++;
            /* check if there's already a template by this name. */
    if ((x = (t_template *)pd_findbyclass(templatesym, template_class)))
    {
        t_template *y = template_new(&s_, argc, argv), *y2;
            /* If the new template is the same as the old one,
            there's nothing to do.  */
        if (!template_match(x, y))
        {
                /* Are there "struct" objects upholding this template? */
            if (x->t_list)
            {
                    /* don't know what to do here! */
                error("%s: template mismatch",
                    templatesym->s_name);
            }
            else
            {
                    /* conform everyone to the new template */
                template_conform(x, y);
                pd_free(&x->t_pdobj);
                y2 = template_new(templatesym, argc, argv);
                y2->t_list = 0;
            }
        }
        pd_free(&y->t_pdobj);
    }
        /* otherwise, just make one. */
    else template_new(templatesym, argc, argv);
    return (0);
}

    /* here we assume someone has already cleaned up all instances of this. */
void template_free(t_template *x)
{
    if (*x->t_sym->s_name)
        pd_unbind(&x->t_pdobj, x->t_sym);
    t_freebytes(x->t_vec, x->t_n * sizeof(*x->t_vec));
}

static void template_setup(void)
{
    template_class = class_new(gensym("template"), 0, (t_method)template_free,
        sizeof(t_template), CLASS_PD, 0);
    class_addmethod(pd_canvasmaker, (t_method)template_usetemplate,
        gensym("struct"), A_GIMME, 0);
        
}

/* ---------------- gtemplates.  One per canvas. ----------- */

/* "Struct": an object that searches for, and if necessary creates, 
a template (above).  Other objects in the canvas then can give drawing
instructions for the template.  The template doesn't go away when the
"struct" is deleted, so that you can replace it with
another one to add new fields, for example. */

static void *gtemplate_donew(t_symbol *sym, int argc, t_atom *argv)
{
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    t_canvas *cur = canvas_getcurrent();
    t_gobj *gob = cur->gl_list;
    while (gob)
    {
        if (pd_class(&gob->g_pd) == gtemplate_class)
        {
            error("%s: only one struct allowed per canvas.", cur->gl_name->s_name);
            return(0);
        }
        gob = gob->g_next;
    }
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    t_gtemplate *x = (t_gtemplate *)pd_new(gtemplate_class);
    t_template *t = template_findbyname(sym);
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    int i;
    t_symbol *sx = gensym("x");
    x->x_owner = canvas_getcurrent();
    x->x_next = 0;
    x->x_sym = sym;
    x->x_argc = argc;
    x->x_argv = (t_atom *)getbytes(argc * sizeof(t_atom));
    for (i = 0; i < argc; i++)
        x->x_argv[i] = argv[i];

        /* already have a template by this name? */
    if (t)
    {
        x->x_template = t;
            /* if it's already got a "struct" object we
            just tack this one to the end of the list and leave it
            there. */
        if (t->t_list)
        {
            t_gtemplate *x2, *x3;
            for (x2 = x->x_template->t_list; x3 = x2->x_next; x2 = x3)
                ;
            x2->x_next = x;
            post("template %s: warning: already exists.", sym->s_name);
        }
        else
        {
                /* if there's none, we just replace the template with
                our own and conform it. */
            t_template *y = template_new(&s_, argc, argv);
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            /* I'm not _exactly_ sure about this. It's possible
               that the user could screw up a nested array construction
               and end up with scalars that aren't able to conform. On
               the other hand, this keeps us from crashing if a non-
               existent array template is typed into the box. */
            if (!template_cancreate(y))
            {
                return 0;
            }

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            canvas_redrawallfortemplate(t, 2);
                /* Unless the new template is different from the old one,
                there's nothing to do.  */
            if (!template_match(t, y))
            {
                    /* conform everyone to the new template */
                template_conform(t, y);
                pd_free(&t->t_pdobj);
                t = template_new(sym, argc, argv);
            }
            pd_free(&y->t_pdobj);
            t->t_list = x;
            canvas_redrawallfortemplate(t, 1);
        }
    }
    else
    {
            /* otherwise make a new one and we're the only struct on it. */
        x->x_template = t = template_new(sym, argc, argv);
        t->t_list = x;
    }
    outlet_new(&x->x_obj, 0);
    return (x);
}

static void *gtemplate_new(t_symbol *s, int argc, t_atom *argv)
{
    t_symbol *sym = atom_getsymbolarg(0, argc, argv);
    if (argc >= 1)
        argc--; argv++;
    return (gtemplate_donew(canvas_makebindsym(sym), argc, argv));
}

    /* old version (0.34) -- delete 2003 or so */
static void *gtemplate_new_old(t_symbol *s, int argc, t_atom *argv)
{
    t_symbol *sym = canvas_makebindsym(canvas_getcurrent()->gl_name);
    static int warned;
    if (!warned)
    {
        post("warning -- 'template' (%s) is obsolete; replace with 'struct'",
            sym->s_name);
        warned = 1;
    }
    return (gtemplate_donew(sym, argc, argv));
}

t_template *gtemplate_get(t_gtemplate *x)
{
    return (x->x_template);
}

static void gtemplate_free(t_gtemplate *x)
{
        /* get off the template's list */
    t_template *t = x->x_template;
    t_gtemplate *y;
    if (x == t->t_list)
    {
        canvas_redrawallfortemplate(t, 2);
        if (x->x_next)
        {
                /* if we were first on the list, and there are others on
                the list, make a new template corresponding to the new
                first-on-list and replace the existing template with it. */
            t_template *z = template_new(&s_,
                x->x_next->x_argc, x->x_next->x_argv);
            template_conform(t, z);
            pd_free(&t->t_pdobj);
            pd_free(&z->t_pdobj);
            z = template_new(x->x_sym, x->x_next->x_argc, x->x_next->x_argv);
            z->t_list = x->x_next;
            for (y = z->t_list; y ; y = y->x_next)
                y->x_template = z;
        }
        else t->t_list = 0;
        canvas_redrawallfortemplate(t, 1);
    }
    else
    {
        t_gtemplate *x2, *x3;
        for (x2 = t->t_list; x3 = x2->x_next; x2 = x3)
        {
            if (x == x3)
            {
                x2->x_next = x3->x_next;
                break;
            }
        }
    }
    freebytes(x->x_argv, sizeof(t_atom) * x->x_argc);
}

static void gtemplate_setup(void)
{
    gtemplate_class = class_new(gensym("struct"),
        (t_newmethod)gtemplate_new, (t_method)gtemplate_free,
        sizeof(t_gtemplate), CLASS_NOINLET, A_GIMME, 0);
    class_addcreator((t_newmethod)gtemplate_new_old, gensym("template"),
        A_GIMME, 0);
}

/* ---------------  FIELD DESCRIPTORS ---------------------- */

/* a field descriptor can hold a constant or a variable; if a variable,
it's the name of a field in the template we belong to.  LATER, we might
want to cache the offset of the field so we don't have to search for it
every single time we draw the object.
*/

struct _fielddesc
{
    char fd_type;       /* LATER consider removing this? */
    char fd_var;
    union
    {
        t_float fd_float;       /* the field is a constant float */
        t_symbol *fd_symbol;    /* the field is a constant symbol */
        t_symbol *fd_varsym;    /* the field is variable and this is the name */
    } fd_un;
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    float fd_v1;        /* min and max values */
    float fd_v2;
    float fd_screen1;   /* min and max screen values */
    float fd_screen2;
    float fd_quantum;   /* quantization in value */ 
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};

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static void fielddesc_setfloat_const(t_fielddesc *fd, t_float f)
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{
    fd->fd_type = A_FLOAT;
    fd->fd_var = 0;
    fd->fd_un.fd_float = f;
    fd->fd_v1 = fd->fd_v2 = fd->fd_screen1 = fd->fd_screen2 =
        fd->fd_quantum = 0;
}

static void fielddesc_setsymbol_const(t_fielddesc *fd, t_symbol *s)
{
    fd->fd_type = A_SYMBOL;
    fd->fd_var = 0;
    fd->fd_un.fd_symbol = s;
    fd->fd_v1 = fd->fd_v2 = fd->fd_screen1 = fd->fd_screen2 =
        fd->fd_quantum = 0;
}

static void fielddesc_setfloat_var(t_fielddesc *fd, t_symbol *s)
{
    char *s1, *s2, *s3, strbuf[MAXPDSTRING];
    int i;
    fd->fd_type = A_FLOAT;
    fd->fd_var = 1;
    if (!(s1 = strchr(s->s_name, '(')) || !(s2 = strchr(s->s_name, ')'))
        || (s1 > s2))
    {
        fd->fd_un.fd_varsym = s;
        fd->fd_v1 = fd->fd_v2 = fd->fd_screen1 = fd->fd_screen2 =
            fd->fd_quantum = 0;
    }
    else
    {
        int cpy = s1 - s->s_name, got;
        if (cpy > MAXPDSTRING-5)
            cpy = MAXPDSTRING-5;
        strncpy(strbuf, s->s_name, cpy);
        strbuf[cpy] = 0;
        fd->fd_un.fd_varsym = gensym(strbuf);
        got = sscanf(s1, "(%f:%f)(%f:%f)(%f)",
            &fd->fd_v1, &fd->fd_v2, &fd->fd_screen1, &fd->fd_screen2,
                &fd->fd_quantum);
        if (got < 2)
            goto fail;
        if (got == 3 || (got < 4 && strchr(s2, '(')))
            goto fail;
        if (got < 5 && (s3 = strchr(s2, '(')) && strchr(s3+1, '('))
            goto fail;
        if (got == 4)
            fd->fd_quantum = 0;
        else if (got == 2)
        {
            fd->fd_quantum = 0;
            fd->fd_screen1 = fd->fd_v1;
            fd->fd_screen2 = fd->fd_v2;
        }
        return;
    fail:
        post("parse error: %s", s->s_name);
        fd->fd_v1 = fd->fd_screen1 = fd->fd_v2 = fd->fd_screen2 =
            fd->fd_quantum = 0;
    }
}

#define CLOSED 1
#define BEZ 2
#define NOMOUSE 4
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#define BBOX 8          /* pair of coords for rectangles and ellipses */
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#define A_ARRAY 55      /* LATER decide whether to enshrine this in m_pd.h */

static void fielddesc_setfloatarg(t_fielddesc *fd, int argc, t_atom *argv)
{
        if (argc <= 0) fielddesc_setfloat_const(fd, 0);
        else if (argv->a_type == A_SYMBOL)
            fielddesc_setfloat_var(fd, argv->a_w.w_symbol);
        else fielddesc_setfloat_const(fd, argv->a_w.w_float);
}

static void fielddesc_setsymbolarg(t_fielddesc *fd, int argc, t_atom *argv)
{
        if (argc <= 0) fielddesc_setsymbol_const(fd, &s_);
        else if (argv->a_type == A_SYMBOL)
        {
            fd->fd_type = A_SYMBOL;
            fd->fd_var = 1;
            fd->fd_un.fd_varsym = argv->a_w.w_symbol;
            fd->fd_v1 = fd->fd_v2 = fd->fd_screen1 = fd->fd_screen2 =
                fd->fd_quantum = 0;
        }
        else fielddesc_setsymbol_const(fd, &s_);
}

static void fielddesc_setarrayarg(t_fielddesc *fd, int argc, t_atom *argv)
{
        if (argc <= 0) fielddesc_setfloat_const(fd, 0);
        else if (argv->a_type == A_SYMBOL)
        {
            fd->fd_type = A_ARRAY;
            fd->fd_var = 1;
            fd->fd_un.fd_varsym = argv->a_w.w_symbol;
        }
        else fielddesc_setfloat_const(fd, argv->a_w.w_float);
}

    /* getting and setting values via fielddescs -- note confusing names;
    the above are setting up the fielddesc itself. */
static t_float fielddesc_getfloat(t_fielddesc *f, t_template *template,
    t_word *wp, int loud)
{
    if (f->fd_type == A_FLOAT)
    {
        if (f->fd_var)
            return (template_getfloat(template, f->fd_un.fd_varsym, wp, loud));
        else return (f->fd_un.fd_float);
    }
    else
    {
        if (loud)
            error("symbolic data field used as number");
        return (0);
    }
}

    /* convert a variable's value to a screen coordinate via its fielddesc */
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t_float fielddesc_cvttocoord(t_fielddesc *f, t_float val)
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{
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    t_float coord, pix, extreme, div;
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    if (f->fd_v2 == f->fd_v1)
        return (val);
    div = (f->fd_screen2 - f->fd_screen1)/(f->fd_v2 - f->fd_v1);
    coord = f->fd_screen1 + (val - f->fd_v1) * div;
    extreme = (f->fd_screen1 < f->fd_screen2 ?
        f->fd_screen1 : f->fd_screen2);
    if (coord < extreme)
        coord = extreme;
    extreme = (f->fd_screen1 > f->fd_screen2 ? 
        f->fd_screen1 : f->fd_screen2);
    if (coord > extreme)
        coord = extreme;
    return (coord);
}

    /* read a variable via fielddesc and convert to screen coordinate */
t_float fielddesc_getcoord(t_fielddesc *f, t_template *template,
    t_word *wp, int loud)
{
    if (f->fd_type == A_FLOAT)
    {
        if (f->fd_var)
        {
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            t_float val = template_getfloat(template,
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                f->fd_un.fd_varsym, wp, loud);
            return (fielddesc_cvttocoord(f, val));
        }
        else return (f->fd_un.fd_float);
    }
    else
    {
        if (loud)
            error("symbolic data field used as number");
        return (0);
    }
}

static t_symbol *fielddesc_getsymbol(t_fielddesc *f, t_template *template,
    t_word *wp, int loud)
{
    if (f->fd_type == A_SYMBOL)
    {
        if (f->fd_var)
            return(template_getsymbol(template, f->fd_un.fd_varsym, wp, loud));
        else return (f->fd_un.fd_symbol);
    }
    else
    {
        if (loud)
            error("numeric data field used as symbol");
        return (&s_);
    }
}

    /* convert from a screen coordinate to a variable value */
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t_float fielddesc_cvtfromcoord(t_fielddesc *f, t_float coord)
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{
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    t_float val;
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    if (f->fd_screen2 == f->fd_screen1)
        val = coord;
    else
    {
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        t_float div = (f->fd_v2 - f->fd_v1)/(f->fd_screen2 - f->fd_screen1);
        t_float extreme;
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        val = f->fd_v1 + (coord - f->fd_screen1) * div;
        if (f->fd_quantum != 0)
            val = ((int)((val/f->fd_quantum) + 0.5)) *  f->fd_quantum;
        extreme = (f->fd_v1 < f->fd_v2 ?
            f->fd_v1 : f->fd_v2);
        if (val < extreme) val = extreme;
        extreme = (f->fd_v1 > f->fd_v2 ?
            f->fd_v1 : f->fd_v2);
        if (val > extreme) val = extreme;
    }
    return (val);
 }

void fielddesc_setcoord(t_fielddesc *f, t_template *template,
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    t_word *wp, t_float coord, int loud)
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{
    if (f->fd_type == A_FLOAT && f->fd_var)
    {
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        t_float val = fielddesc_cvtfromcoord(f, coord);
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        template_setfloat(template,
                f->fd_un.fd_varsym, wp, val, loud);
    }
    else
    {
        if (loud)
            error("attempt to set constant or symbolic data field to a number");
    }
}

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/* ---------------- draw svg shapes and paths ---------------- */

/*
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draw objects belong to templates and describe how the data in the template
are to be drawn.  The coordinates of the draw (and other display features)
can be attached to fields in the template.
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todo: some better way than drawcurve has for defining click widgetbehaviors
    (just checking for field variables and moving joints is too simplistic)
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*/

t_class *draw_class;

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t_class *svg_class;

typedef struct _svg_attr
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{
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    int a_flag;
    t_fielddesc a_attr;
} t_svg_attr;

/* svg attributes */
typedef struct _svg
{
    t_pd x_pd;
    void *x_parent; /* parent object-- currently either [group] or [draw] */
    int x_flags;
    t_symbol *x_type;
    t_fielddesc x_fill[3];
    int x_filltype;
    t_svg_attr x_fillopacity;
    t_svg_attr x_fillrule;
    t_fielddesc x_stroke[3];
    int x_stroketype;
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    int x_ndash;
    t_fielddesc *x_strokedasharray; /* array of lengths */
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    t_svg_attr x_strokelinecap;
    t_svg_attr x_strokelinejoin;
    t_svg_attr x_strokemiterlimit;
    t_svg_attr x_strokeopacity;
    t_svg_attr x_strokewidth;
    t_svg_attr x_rx; /* for rounded rectangles */
    t_svg_attr x_ry;
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    int x_transform_n;
    t_fielddesc *x_transform;
    t_fielddesc x_width;
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    t_svg_attr x_vis;
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    int x_pathrect_cache; /* 0 to recalc on next draw_getrect call
                             1 for cached
                            -1 to turn off caching */
    int x_x1; /* use these for caching path bbox */
    int x_y1;
    int x_x2;
    int x_y2;
    int x_nargs;
    t_fielddesc *x_vec;
    int *x_nargs_per_cmd;      /* points per each path command */
    int x_npathcmds;
    char *x_pathcmds; /* for path commands */
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} t_svg;

typedef struct _draw
{
    t_object x_obj;
    t_symbol *x_drawtype;
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    t_canvas *x_canvas;
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    t_pd *x_attr;
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} t_draw;

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typedef struct _drawimage
{
    t_object x_obj;
    t_fielddesc x_value; /* todo: rename to index */
    t_fielddesc x_xloc;
    t_fielddesc x_yloc;
    t_fielddesc x_vis;
    t_symbol *x_img;
    t_float x_w;
    t_float x_h;
    int x_flags;
    int x_deleteme;
    t_canvas *x_canvas;
    t_pd *x_attr;
} t_drawimage;

1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
static int is_svgpath_cmd(t_symbol *s)
{
    /* 1 for absolute cmd, 2 for relative */
    if (s == gensym("M") || s == gensym("Z") || s == gensym("L") ||
        s == gensym("H") || s == gensym("V") || s == gensym("C") ||
        s == gensym("S") || s == gensym("Q") || s == gensym("T") ||
        s == gensym("A"))
        return 1;
    else if (s == gensym("m") || s == gensym("z") || s == gensym("l") ||
        s == gensym("h") || s == gensym("v") || s == gensym("c") ||
        s == gensym("s") || s == gensym("q") || s == gensym("t") ||
        s == gensym("a"))
        return 2;
    else return 0;
}

static int path_ncmds(int argc, t_atom *argv)
{
    int i, j = 0;
    for(i = 0; i < argc; i++)
    {
1088
1089
        if (argv[i].a_type == A_SYMBOL &&
            is_svgpath_cmd(atom_getsymbol(argv+i)))
1090
1091
1092
1093
1094
            j++;
    }
    return j;
}

1095
1096
1097
1098
1099
1100
1101
1102
void svg_initvec(t_svg *x)
{
    t_fielddesc *fd = x->x_vec;
    int i;
    for (i = 0; i < 4; i++)
        fielddesc_setfloat_const(fd+i, 0);
}

1103
void *svg_new(t_pd *parent, t_symbol *s, int argc, t_atom *argv)
1104
{
1105
1106
    t_fielddesc *fd;
    int nxy, i, flags = 0;
1107
    t_svg *x = (t_svg *)pd_new(svg_class);
1108
    x->x_flags = flags;
1109
1110
1111
1112
1113
1114
1115
1116
    x->x_type = s;
    x->x_parent = (void *)parent;
    fielddesc_setfloat_const(&x->x_vis.a_attr, 1);
    /* let it inherit visibility from parent group, if present */
    x->x_vis.a_flag = 0;
    /* the following should be set in method space */
    /* flags |= NOMOUSE; */
    if (x->x_type == gensym("path"))
1117
1118
1119
1120
1121
1122
1123
    {
        int ncmds = x->x_npathcmds = path_ncmds(argc, argv);
        x->x_pathcmds = (char *)t_getbytes(ncmds * sizeof(char));
        x->x_nargs_per_cmd = (int *)t_getbytes(ncmds * sizeof(int));
        for (i = 0; i < ncmds; i++) x->x_nargs_per_cmd[i] = 0;
        nxy = x->x_nargs = argc - ncmds;
    }
1124
    else if (x->x_type == gensym("group"))
1125
1126
1127
1128
1129
1130
1131
1132
    {
        nxy = 0;
        x->x_nargs = 0;
        x->x_vec = 0;
    }
    else /* all other shapes */
    {
        nxy =  (argc + (argc & 1));
1133
1134
1135
1136
1137
1138
        /* give basic shapes at least 4 points */
        if (x->x_type == gensym("rect") ||
            x->x_type == gensym("circle") ||
            x->x_type == gensym("ellipse"))
        {
            nxy = 4;
1139
            if (argc > 4) argc = 4;
1140
        }
1141
1142
1143
        x->x_nargs = nxy;
    }
    x->x_vec = (t_fielddesc *)t_getbytes(nxy * sizeof(t_fielddesc));
1144
1145
1146
1147
1148
1149
1150
1151
    if (x->x_type == gensym("rect") ||
        x->x_type == gensym("circle") ||
        x->x_type == gensym("ellipse"))
    {
        /* set x_vec to all zeros in case the user didn't provide
           enough arguments */
        svg_initvec(x);
    }
1152
    if (argc && x->x_type == gensym("path"))
1153
1154
    {
        if (argv->a_type != A_SYMBOL ||
1155
1156
            (atom_getsymbol(argv) != gensym("M") &&
             atom_getsymbol(argv) != gensym("m")))
1157
        {
1158
1159
            /* this should probably be the parent instead of "x" */
            pd_error(x->x_parent, "draw path: path data must start "
1160
                        "with a moveto command (M or m)");
1161
1162
1163
1164
1165
1166
1167
            return 0;
        }
    }

    int cmdn = -1; /* hack */
    for (i = 0, fd = x->x_vec; i < argc; i++, argv++)
    {
1168
        if (x->x_type == gensym("path") &&
1169
1170
1171
1172
1173
1174
1175
1176
1177
            argv->a_type == A_SYMBOL &&
            is_svgpath_cmd(atom_getsymbol(argv)))
        {
                x->x_pathcmds[++cmdn] = *(atom_getsymbol(argv)->s_name);
        }
        else
        {
            fielddesc_setfloatarg(fd++, 1, argv);
            /* post("got a coord"); */
1178
            if (x->x_type == gensym("path"))
1179
1180
1181
1182
1183
1184
1185
1186
1187
            {
                (x->x_nargs_per_cmd[cmdn])++;
                /* if we get a field variable, just
                   turn off the get_rect caching */
                if (argv->a_type == A_SYMBOL)
                    x->x_pathrect_cache = -1;
            }
        }
    }
1188
1189
    if (argc & 1 && x->x_type != gensym("path"))
        fielddesc_setfloat_const(fd, 0);
1190
1191
1192
1193
1194
1195
1196
1197
1198
    x->x_filltype = 42;
    x->x_fillopacity.a_flag = 0;
    x->x_fillrule.a_flag = 0;
    x->x_stroketype = 0;
    x->x_strokelinecap.a_flag = 0;
    x->x_strokelinejoin.a_flag = 0;
    x->x_strokemiterlimit.a_flag = 0;
    x->x_strokeopacity.a_flag = 0;
    x->x_strokewidth.a_flag = 0;
1199
1200
1201
1202
1203
1204
    x->x_x1 = 0;
    x->x_x2 = 0;
    x->x_y1 = 0;
    x->x_y2 = 0;

    x->x_ndash = 0;
1205
    x->x_strokedasharray =
1206
        (t_fielddesc *)t_getbytes(x->x_ndash * sizeof(t_fielddesc));
1207
    x->x_transform_n = 0;
1208
1209
    x->x_transform = (t_fielddesc *)t_getbytes(x->x_transform_n *
        sizeof(t_fielddesc));
1210
1211
1212
    return (x);
}

1213
t_pd *svg_header(t_pd *x)
1214
{
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
    return (&(((t_svg *)x)->x_pd));
}

static int symbol_isdrawtype(t_symbol *s)
{
    if (s == gensym("circle")  || s == gensym("ellipse")  ||
        s == gensym("line")    || s == gensym("path")     ||
        s == gensym("polygon") || s == gensym("polyline") ||
        s == gensym("rect")    || s == gensym("image")    ||
        s == gensym("sprite"))
1225
    {
1226
        return 1;
1227
    }
1228
1229
1230
    else
        return 0;
}
1231

1232
1233
1234
1235
static void *drawimage_new(t_symbol *classsym, int argc, t_atom *argv);

static void *draw_new(t_symbol *classsym, t_int argc, t_atom *argv)
{
1236
    t_symbol *type;
1237
1238
1239
1240
    if (argc && argv->a_type == A_SYMBOL &&
        symbol_isdrawtype(argv[0].a_w.w_symbol))
    {
        type = atom_getsymbolarg(0, argc--, argv++);
1241
1242
        /* sprite and image have their own widgetbehavior, so they
        have their own class and new function */
1243
1244
1245
        if (type == gensym("sprite") || type == gensym("image"))
            return (drawimage_new(type, argc, argv));
    }
1246
    else
1247
    {
1248
1249
        type = gensym("rect");
        post("warning: draw: no shape specified, defaulting to 'rect'");
1250
    }
1251
1252
1253

    t_draw *x = (t_draw *)pd_new(draw_class);

1254
    /* create a proxy for drawing/svg attributes */
1255
    if (!(x->x_attr = (t_pd *)svg_new((t_pd *)x, type, argc, argv)))
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
    {
        pd_error(x, "draw: path data must start with 'm' or 'M'");
        return (0);
    }
    /* now that we have our proxy, make an inlet for it.
       The inlet will belong to our draw object, but the
       svg_class will actually receive the messages
       to the inlet. */
    t_svg *sa = (t_svg *)x->x_attr;
    inlet_new(&x->x_obj, &sa->x_pd, 0, 0);
    /* x_canvas can stay here */
    x->x_canvas = canvas_getcurrent();
    return (x);
}

t_canvas *svg_parentcanvas(t_svg *x)
{
    /* this is probably a better interface... I am
       returning c sometimes because it works for my
       use case, but that doesn't seem like a sensible
       interface in general. */
    t_canvas *ret = 0;
    if (x->x_type == gensym("group"))
    {
        t_canvas *c = (t_canvas *)x->x_parent;
        if (c->gl_owner)
            ret = c->gl_owner;
        else
            ret = c;
    }
    else if (x->x_type == gensym("sprite") ||
             x->x_type == gensym("image"))
    {
        t_drawimage *d = (t_drawimage *)x->x_parent;
        ret = d->x_canvas;
    }
    else
    {
        t_draw *d = (t_draw *)x->x_parent;
        ret = d->x_canvas;
    }
    return (ret);
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
}

static char *rgb_to_hex(int r, int g, int b)
{
    static char hexc[10];
    int r1 = r < 0 ? 0 : r;
    if (r1 > 255) r1 = 255;
    int g1 = g < 0 ? 0 : g;
    if (g1 > 255) g1 = 255;
    int b1 = b < 0 ? 0 : b;
    if (b1 > 255) b1 = 255;
    sprintf(hexc, "#%.6x", (r1 << 16) + (g1 << 8) + b1);
    return hexc;
}

char *get_strokelinecap(int a)
{
1315
    static char strokelinecap[15];
1316
1317
    if (a == 0) sprintf(strokelinecap, "butt");
    else if (a == 1) sprintf(strokelinecap, "round");
1318
    else if (a == 2) sprintf(strokelinecap, "projecting");
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
    else sprintf(strokelinecap, "butt");
    return (strokelinecap);
}

char *get_strokelinejoin(int a)
{
    static char strokelinejoin[8];
    if (a == 0) sprintf(strokelinejoin, "miter");
    else if (a == 1) sprintf(strokelinejoin, "round");
    else if (a == 2) sprintf(strokelinejoin, "bevel");
    else sprintf(strokelinejoin, "miter");
    return (strokelinejoin);
}

1333
1334
/* todo: i think svg_togui and this are unnecessarily
   duplicating some code... */
1335
1336
extern void scalar_select(t_gobj *z, t_glist *owner, int state);
extern void scalar_drawselectrect(t_scalar *x, t_glist *glist, int state);
1337
void svg_doupdate(t_svg *x, t_canvas *c, t_symbol *s)
1338
1339
1340
{
    t_gobj *g;
    t_template *template;
1341
    t_canvas *visible = c;
1342
1343
1344
    void *parent = x->x_parent;
    t_canvas *parentcanvas =
        canvas_templatecanvas_forgroup(svg_parentcanvas(x));
1345
1346
1347
1348
1349
    int redraw_bbox = 0;
     /* "visible" is here because we could be drawn in a gop, in
       which case we must "climb" out to the parent canvas on
       which we are drawn. There's probably a function somewhere
       that abstracts this away... */
1350
    while(visible->gl_isgraph && visible->gl_owner)
1351
        visible = visible->gl_owner;
1352
1353
1354
    for (g = c->gl_list; g; g = g->g_next)
    {
        if (glist_isvisible(c) && g->g_pd == scalar_class &&
1355
            parentcanvas ==
1356
1357
1358
1359
1360
1361
1362
1363
            template_findcanvas(template = (template_findbyname(
                (((t_scalar *)g)->sc_template))))
           )
        {
            t_word *data = ((t_scalar *)g)->sc_vec;
            char str[MAXPDSTRING];
            if (s == gensym("fill"))
            {
1364
1365
1366
1367
1368
                t_symbol *fill;
                t_fielddesc *fd = x->x_fill;
                if (x->x_filltype == 1)
                    fill = fielddesc_getsymbol(fd, template, data, 1);
                else if (x->x_filltype == 2)
1369
                {
1370
1371
                    fill = gensym(rgb_to_hex(
                        (int)fielddesc_getfloat(fd,
1372
                            template, data, 1),
1373
                        (int)fielddesc_getfloat(fd+1,
1374
                            template, data, 1),
1375
1376
                        (int)fielddesc_getfloat(fd+2,
                            template, data, 1)));
1377
                }
1378
1379
1380
                else
                    fill = &s_;
                sprintf(str, "-fill %s", fill->s_name);
1381
1382
1383
            }
            else if (s == gensym("stroke"))
            {
1384
1385
1386
1387
1388
                t_symbol *stroke;
                t_fielddesc *fd = x->x_stroke;
                if (x->x_stroketype == 1)
                    stroke = fielddesc_getsymbol(fd, template, data, 1);
                else if (x->x_stroketype == 2)
1389
                {
1390
1391
                    stroke = gensym(rgb_to_hex(
                        (int)fielddesc_getfloat(fd,
1392
                            template, data, 1),
1393
                        (int)fielddesc_getfloat(fd+1,
1394
                            template, data, 1),
1395
1396
                        (int)fielddesc_getfloat(fd+2,
                            template, data, 1)));
1397
                }
1398
1399
                else stroke = &s_;
                sprintf(str, "-stroke %s", stroke->s_name);
1400
1401
1402
            }
            else if (s == gensym("fill-opacity"))
                sprintf(str, "-fillopacity %g",
1403
1404
                    fielddesc_getcoord(&x->x_fillopacity.a_attr,
                        template, data, 1));
1405
1406
            else if (s == gensym("fill-rule"))
                sprintf(str, "-fillrule %s", (int)fielddesc_getcoord(
1407
                    &x->x_fillrule.a_attr, template, data, 1) ?
1408
1409
1410
                       "evenodd" : "nonzero");
            else if (s == gensym("stroke-linecap"))
                sprintf(str, "-strokelinecap %s", get_strokelinecap(
1411
                    (int)fielddesc_getcoord(&x->x_strokelinecap.a_attr,
1412
1413
1414
                        template, data, 1)));
            else if (s == gensym("stroke-linejoin"))
                sprintf(str, "-strokelinejoin %s", get_strokelinejoin(
1415
                    (int)fielddesc_getcoord(&x->x_strokelinejoin.a_attr,
1416
1417
1418
                        template, data, 1)));
            else if (s == gensym("stroke-miterlimit"))
                sprintf(str, "-strokemiterlimit %g", fielddesc_getcoord(
1419
                    &x->x_strokemiterlimit.a_attr, template, data, 1));
1420
1421
            else if (s == gensym("stroke-opacity"))
                sprintf(str, "-strokeopacity %g", fielddesc_getcoord(
1422
                    &x->x_strokeopacity.a_attr, template, data, 1));
1423
            else if (s == gensym("stroke-width"))
1424
            {
1425
                sprintf(str, "-strokewidth %g", fielddesc_getcoord(
1426
                    &x->x_strokewidth.a_attr, template, data, 1));
1427
1428
                redraw_bbox = 1;
            }
1429
1430
1431
1432
1433
1434
1435
            else if (s == gensym("r"))
            {
                sprintf(str, "-rx %g -ry %g",
                fielddesc_getcoord(x->x_vec+2, template, data, 1),
                fielddesc_getcoord(x->x_vec+2, template, data, 1));
                redraw_bbox = 1;
            }
1436
            else if (s == gensym("rx"))
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
            {
                if (x->x_type == gensym("rect"))
                    sprintf(str, "-rx %d", (int)fielddesc_getcoord(
                        &x->x_rx.a_attr, template, data, 1));
                else
                {
                    sprintf(str, "-rx %g", fielddesc_getcoord(
                        x->x_vec+2, template, data, 1));
                    redraw_bbox = 1;
                }
            }
1448
            else if (s == gensym("ry"))
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
            {
                if (x->x_type == gensym("rect"))
                    sprintf(str, "-ry %d", (int)fielddesc_getcoord(
                        &x->x_ry.a_attr, template, data, 1));
                else
                {
                     sprintf(str, "-ry %g", fielddesc_getcoord(
                         x->x_vec+3, template, data, 1));
                     redraw_bbox = 1;
                }
1459
            }
1460
            else if (s == gensym("vis"))
1461
            {
1462
1463
                sprintf(str, "-state %s", (int)fielddesc_getcoord(
                    &x->x_vis.a_attr, template, data, 1) ? "normal" : "hidden");
1464
1465
                redraw_bbox = 1;
            }
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
            else if (s == gensym("stroke-dasharray"))
            {
                if (x->x_ndash)
                {
                    t_fielddesc *fd = x->x_strokedasharray;
                    int i;
                    char *cur = str, * const end = str + sizeof str;
                    cur += snprintf(cur, end-cur, "-strokedasharray {");
                    for (i = 0; i < x->x_ndash; i++)
                        if (cur < end)
                            cur += snprintf(cur, end-cur, " %g ",
                                fielddesc_getcoord(fd+i, template, data, 1));
                    cur += snprintf(cur, end-cur, "}\n");
                }
                else return;
            }
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
            else if (s == gensym("data"))
            {
                /* this needs to be abstracted out somehow... */
                sys_vgui(".x%lx.c coords .draw%lx.%lx {\\\n",
                    visible, parent, data);
                /* let's turn off bbox caching so we can recalculate
                   the bbox */
                if (x->x_pathrect_cache != -1)
                   x->x_pathrect_cache = 0;
                redraw_bbox = 1;
                int i;
                char *cmd;
                t_fielddesc *f;
                int totalpoints = 0; /* running tally */
                /* path parser: no error checking yet */
                for (i = 0, cmd = x->x_pathcmds; i < x->x_npathcmds; i++, cmd++)
                {
                    int j;
                    int cargs = x->x_nargs_per_cmd[i];
                    f = (x->x_vec)+totalpoints;
                    sys_vgui("%c\\\n", *(cmd));
                    for (j = 0; j < x->x_nargs_per_cmd[i]; j++)
                        sys_vgui("%g\\\n", fielddesc_getcoord(
                            f+j, template, data, 1));
                    totalpoints += x->x_nargs_per_cmd[i];
                }
                sys_gui("}\n");
            }
1510
1511
1512
1513
1514
1515
            else if (s == gensym("index"))
            {
                sys_vgui("pdtk_drawimage_index .x%lx.c .x%lx .draw%lx.%lx %d\n",
                    visible, parent, parent, data, drawimage_getindex(parent, 
                        template, data)); 
            }
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
            else if (s == gensym("points"))
            {
                /* this needs to be abstracted out somehow... */
                sys_vgui(".x%lx.c coords .draw%lx.%lx \\\n",
                    visible, parent, data);
                /* let's turn off bbox caching so we can recalculate
                   the bbox */
                if (x->x_pathrect_cache != -1)
                   x->x_pathrect_cache = 0;
                redraw_bbox = 1;
                int i;
                t_fielddesc *f = x->x_vec;
                if (x->x_type == gensym("rect") ||
                    x->x_type == gensym("ellipse"))
                {
                    t_float xval, yval, w, h;
                    xval = fielddesc_getcoord(f, template, data, 1);
                    yval = fielddesc_getcoord(f+1, template, data, 1);
                    if (x->x_type == gensym("rect"))
                    {
                        w = xval + (fielddesc_getcoord(f+2, template, data, 1));
                        h = yval + (fielddesc_getcoord(f+3, template, data, 1));
                        sys_vgui("%g %g %g %g\\\n", xval, yval, w, h);
                    }
                    else
                    {
                        sys_vgui("%g %g\\\n", xval, yval);
                    }
                }
                else
                {
                    int n = (x->x_type == gensym("circle")) ? 2 : x->x_nargs;
                    for (i = 0; i < n; i++)
                    {
                        sys_vgui("%g\\\n", fielddesc_getcoord(
                            f+i, template, data, 1));
                    }
                }
                sys_gui("\n");
            }
            if (x->x_type == gensym("group") && s != gensym("data") &&
1557
                s != gensym("points") && s != gensym("index"))
1558
            {
1559
1560
                sys_vgui(".x%lx.c itemconfigure .dgroup%lx.%lx %s\n",
                   visible, parent, data, str);
1561
            }
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            else if (s != gensym("data") && s != gensym("points") &&
                s != gensym("index"))
1564
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            {
                sys_vgui(".x%lx.c itemconfigure .draw%lx.%lx %s\n",
1566
                   visible, parent, data, str);
1567
            }
1568
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            if (redraw_bbox)
            {
                /* uncache the scalar's bbox */
                ((t_scalar *)g)->sc_bboxcache = 0;
1572
                sys_vgui("pdtk_canvas_getscroll .x%lx.c\n", visible);
1573
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                if (glist_isselected(c, &((t_scalar *)g)->sc_gobj))
                {
                    //scalar_select(g, c, 1);
                    scalar_drawselectrect((t_scalar *)g, c, 0);
                    scalar_drawselectrect((t_scalar *)g, c, 1);
1578
                    /* only get the scroll if we had to redraw the bbox */
1579
1580
                }
            }
1581
        }
1582
1583
        if (g->g_pd == canvas_class)
        {
1584
            svg_doupdate(x, (t_glist *)g, s);
1585
        }
1586
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1588
1589
    }
}

extern t_canvas *canvas_list;
1590
void svg_update(t_svg *x, t_symbol *s)
1591
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{
    t_canvas *c;
    for (c = canvas_list; c; c = c->gl_next)
1594
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        svg_doupdate(x, c, s);
}
1596

1597
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void svg_vis(t_svg *x, t_symbol *s, int argc, t_atom *argv)
{
    if (argv[0].a_type == A_FLOAT || argv[0].a_type == A_SYMBOL)
    {
        fielddesc_setfloatarg(&x->x_vis.a_attr, argc, argv);
        x->x_vis.a_flag = 1;
        svg_update(x, s);
    }
1605
1606
}

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/* resize x_vec et all for path or shape coordinate data */
void svg_resizecoords(t_svg *x, int argc, t_atom *argv)
{
//    if (x->x_type != gensym("path")) return;
    int oldn = x->x_npathcmds;
    /* for polyline and polygon, we don't want any path commands */
    x->x_npathcmds = (x->x_type == gensym("path")) ?
        path_ncmds(argc, argv) : 0;
    x->x_pathcmds = (char *)t_resizebytes(x->x_pathcmds,
        oldn * sizeof(char),
        x->x_npathcmds * sizeof(char));

    x->x_nargs_per_cmd = (int *)t_resizebytes(x->x_nargs_per_cmd,
        oldn * sizeof(*x->x_nargs_per_cmd),
        x->x_npathcmds * sizeof(*x->x_nargs_per_cmd));

    oldn = x->x_nargs;
    x->x_nargs = argc - x->x_npathcmds;

    x->x_vec = (t_fielddesc *)t_resizebytes(x->x_vec,
        oldn * sizeof(*x->x_vec),
        x->x_nargs * sizeof(*x->x_vec));
}

void svg_data(t_svg *x, t_symbol *s, int argc, t_atom *argv)
{
    /* only process path data and polygon/polyline points */
    if (x->x_type != gensym("path") && s != gensym("points")) return;
    /* resize the path data fields to fit the incoming data */
    svg_resizecoords(x, argc, argv);
    /* todo: loop is copy/pasted from draw_new-- break it out */
    t_fielddesc *fd;
    int i, cmdn = -1; /* hack */
    for (i = 0, fd = x->x_vec; i < argc; i++, argv++)
    {
        if (x->x_type == gensym("path") &&
            argv->a_type == A_SYMBOL &&
            is_svgpath_cmd(atom_getsymbol(argv)))
        {
                x->x_pathcmds[++cmdn] = *(atom_getsymbol(argv)->s_name);
                x->x_nargs_per_cmd[cmdn] = 0;
        }
        else
        {
            fielddesc_setfloatarg(fd++, 1, argv);
            /* post("got a coord"); */
            if (x->x_type == gensym("path"))
            {
                (x->x_nargs_per_cmd[cmdn])++;
                /* if we get a field variable, just
                   turn off the get_rect caching */
                if (argv->a_type == A_SYMBOL)
                    x->x_pathrect_cache = -1;
            }
        }
    }
    svg_update(x, s);
}

1666
void svg_fillopacity(t_svg *x, t_symbol *s, t_int argc, t_atom *argv)
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1669
{
    if (argv[0].a_type == A_FLOAT || argv[0].a_type == A_SYMBOL)
    {
1670
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1673
        /* the svg_attr stuff should probably be set with a function */
        fielddesc_setfloatarg(&x->x_fillopacity.a_attr, argc, argv);
        x->x_fillopacity.a_flag = 1;
        svg_update(x, s);
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1676
    }
}

1677
1678
void svg_strokeopacity(t_svg *x, t_symbol *s,
    t_int argc, t_atom *argv)
1679
1680
1681
{
    if (argv[0].a_type == A_FLOAT || argv[0].a_type == A_SYMBOL)
    {
1682
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1684
        fielddesc_setfloatarg(&x->x_strokeopacity.a_attr, argc, argv);
        x->x_strokeopacity.a_flag = 1;
        svg_update(x, s);
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1687
    }
}

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1689
void svg_strokedasharray(t_svg *x, t_symbol *s,
    int argc, t_atom *argv)
1690
1691
{
    t_fielddesc *fd;
1692
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1695
    x->x_strokedasharray =
        (t_fielddesc *)t_resizebytes(x->x_strokedasharray,
            x->x_ndash * sizeof(*x->x_strokedasharray),
            argc * sizeof(*x->x_strokedasharray));
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1698
1699
    x->x_ndash = argc;
    fd = x->x_strokedasharray;
    while (argc)
        fielddesc_setfloatarg(fd++, argc--, argv++);
1700
    svg_update(x, s);
1701
1702
}

1703
void svg_fill(t_svg *x, t_symbol *s, t_int argc, t_atom *argv)
1704
{