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/******************************************************
*
* canvasindex - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 2007:forum::für::umläute:2007
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
/*
* this object provides a way to get the position of the containing abstraction
* within the parent-patch
* this makes it easy to (dis)connect this abstraction to others
*
* by default the index of the containing abstraction within the parent-patch is
* queried; however you can give the "depth" as argument:
* e.g. [canvasindex 1] will give you the index of the abstraction containing the
* abstraction that holds this object
*/
#include "m_pd.h"
#include "g_canvas.h"
int glist_getindex(t_glist *x, t_gobj *y);
/* ------------------------- canvasindex ---------------------------- */
static t_class *canvasindex_class;
typedef struct _canvasindex
{
t_object x_obj;
t_canvas *x_canvas;
t_outlet*xoutlet, *youtlet;
} t_canvasindex;
static void canvasindex_bang(t_canvasindex *x)
{
t_canvas*c=x->x_canvas;
t_canvas*c0=0;
if(!c) return;
c0=c->gl_owner;
if(!c0)return;
outlet_float(x->youtlet, (t_float)(glist_getindex(c0, 0)));
outlet_float(x->xoutlet, (t_float)(glist_getindex(c0, (t_gobj*)c)));
}
static void canvasindex_free(t_canvasindex *x)
{
outlet_free(x->xoutlet);
outlet_free(x->youtlet);
}
static void *canvasindex_new(t_floatarg f)
{
t_canvasindex *x = (t_canvasindex *)pd_new(canvasindex_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_canvas = canvas;
x->xoutlet=outlet_new(&x->x_obj, &s_float);
x->youtlet=outlet_new(&x->x_obj, &s_float);
return (x);
}
void canvasindex_setup(void)
{
canvasindex_class = class_new(gensym("canvasindex"),
(t_newmethod)canvasindex_new, (t_method)canvasindex_free,
sizeof(t_canvasindex), 0,
A_DEFFLOAT, 0);
class_addbang(canvasindex_class, (t_method)canvasindex_bang);
}
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