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/*****************************************************
*
* receivecanvas - implementation file
*
* copyleft (c) 2009, IOhannes m zmölnig
*
* forum::für::umläute
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
/*
* this object provides a way to receive messages to upstream canvases
* by default it receives messages to the containing canvas, but you can give the "depth" as argument;
* e.g. [receivecanvas 1] will receive messages to the parent of the containing canvas
*/
/* NOTES:
* it would be _really_ nice to get all the messages that are somehow "sent" to a (parent) object,
* no matter whether using typedmess() or using sendcanvas()
* this would require (however) to overwrite and proxy the classmethods for canvas which is a chore
*
* currently this objects only gets the messages from typedmess()...
*/
#include "m_pd.h"
#include "g_canvas.h"
#include <stdio.h>
/* ------------------------- receivecanvas ---------------------------- */
static t_class *receivecanvas_class;
typedef struct _receivecanvas
{
t_object x_obj;
t_symbol *x_sym;
} t_receivecanvas;
static void receivecanvas_anything(t_receivecanvas *x, t_symbol*s, int argc, t_atom*argv)
{
outlet_anything(x->x_obj.ob_outlet, s, argc, argv);
}
static void receivecanvas_free(t_receivecanvas *x)
{
if(x->x_sym)
pd_unbind(&x->x_obj.ob_pd, x->x_sym);
}
static void *receivecanvas_new(t_floatarg f)
{
t_receivecanvas *x = (t_receivecanvas *)pd_new(receivecanvas_class);
t_glist *glist=(t_glist *)canvas_getcurrent();
t_canvas *canvas=(t_canvas*)glist_getcanvas(glist);
int depth=(int)f;
if(depth<0)depth=0;
while(depth && canvas) {
canvas=canvas->gl_owner;
depth--;
}
x->x_sym=NULL;
if(canvas) {
char buf[40];
snprintf(buf, 40, ".x%lx", (t_int)canvas);
x->x_sym=gensym(buf);
pd_bind(&x->x_obj.ob_pd, x->x_sym);
}
outlet_new(&x->x_obj, 0);
return (x);
}
void receivecanvas_setup(void)
{
receivecanvas_class = class_new(gensym("receivecanvas"), (t_newmethod)receivecanvas_new,
(t_method)receivecanvas_free, sizeof(t_receivecanvas), CLASS_NOINLET, A_DEFFLOAT, 0);
class_addanything(receivecanvas_class, (t_method)receivecanvas_anything);
}
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