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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>
static t_class *receivecanvas_class, *receivecanvas_proxy_class;
typedef struct _receivecanvas_proxy
{
t_object p_obj;
t_symbol*p_sym;
t_clock *p_clock;
struct _receivecanvas*p_parent;
} t_receivecanvas_proxy;
typedef struct _receivecanvas
{
t_object x_obj;
t_receivecanvas_proxy*x_proxy;
} t_receivecanvas;
/* ------------------------- receivecanvas proxy ---------------------------- */
static void receivecanvas_anything(t_receivecanvas *x, t_symbol*s, int argc, t_atom*argv);
static void receivecanvas_proxy_anything(t_receivecanvas_proxy *p, t_symbol*s, int argc, t_atom*argv) {
if(p->p_parent)
receivecanvas_anything(p->p_parent, s, argc, argv);
}
static void receivecanvas_proxy_free(t_receivecanvas_proxy *p)
{
if(p->p_sym)
pd_unbind(&p->p_obj.ob_pd, p->p_sym);
p->p_sym=NULL;
clock_free(p->p_clock);
p->p_clock=NULL;
p->p_parent=NULL;
pd_free(&p->p_obj.ob_pd);
p=NULL;
}
static t_receivecanvas_proxy*receivecanvas_proxy_new(t_receivecanvas *x, t_symbol*s) {
t_receivecanvas_proxy*p=NULL;
if(!x) return p;
p=(t_receivecanvas_proxy*)pd_new(receivecanvas_proxy_class);
p->p_sym=s;
if(p->p_sym) {
pd_bind(&p->p_obj.ob_pd, p->p_sym);
}
p->p_parent=x;
p->p_clock=clock_new(p, (t_method)receivecanvas_proxy_free);
return p;
}
/* ------------------------- 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_proxy) {
x->x_proxy->p_parent = NULL;
clock_delay(x->x_proxy->p_clock, 0);
}
}
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_proxy=NULL;
if(canvas) {
char buf[MAXPDSTRING];
snprintf(buf, MAXPDSTRING-1, ".x%lx", (t_int)canvas);
buf[MAXPDSTRING-1]=0;
x->x_proxy=receivecanvas_proxy_new(x, gensym(buf));
}
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);
receivecanvas_proxy_class = class_new(0, 0, 0, sizeof(t_receivecanvas_proxy), CLASS_NOINLET | CLASS_PD, 0);
class_addanything(receivecanvas_proxy_class, receivecanvas_proxy_anything);
}
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