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/******************************************************
*
* canvasposition - 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 and set the position of the containing
* abstraction within the parent-patch
*
* by default the position of the containing abstraction within the parent-patch is
* queried
* you can give the "depth" as argument;
* e.g. [canvasobjectposition 1] will set/get the position of the abstraction containing the
* abstraction within its canvas.
*/
#include "m_pd.h"
#include "g_canvas.h"
#include "m_imp.h"
/* ------------------------- canvasobjectposition ---------------------------- */
static t_class *canvasobjectposition_class;
typedef struct _canvasobjectposition
{
t_object x_obj;
t_canvas *x_parent; // the canvas we are acting on
t_canvas *x_canvas; // an object in the x_canvas selected via the 2nd inlet (index)
t_outlet*xoutlet, *youtlet;
} t_canvasobjectposition;
static void canvasobjectposition_object(t_canvasobjectposition *x, t_float f);
static void canvasobjectposition_bang(t_canvasobjectposition *x)
{
t_canvas*c=x->x_canvas;
t_canvas*c0=x->x_parent;
int x1=0, y1=0, width=0, height=0;
t_atom alist[2];
if(!c) return;
x1=c->gl_obj.te_xpix;
y1=c->gl_obj.te_ypix;
if(NULL!=c0) {
width= (int)(c0->gl_screenx2 - c0->gl_screenx1);
height=(int)(c0->gl_screeny2 - c0->gl_screeny1);
}
SETFLOAT(alist, (t_float)width);
SETFLOAT(alist+1, (t_float)height);
outlet_list(x->youtlet, 0, 2, alist);
// outlet_float(x->youtlet, y1);
SETFLOAT(alist, (t_float)x1);
SETFLOAT(alist+1, (t_float)y1);
outlet_list(x->xoutlet, 0, 2, alist);
}
static void canvasobjectposition_list(t_canvasobjectposition *x, t_symbol*s, int argc, t_atom*argv)
{
t_canvas*c =x->x_canvas;
t_canvas*c0=x->x_parent;
int dx, dy;
if(!c) return;
// c0=c->gl_owner;
if(argc==0){
canvasobjectposition_bang(x);
return;
}
if(argc!=2 || (A_FLOAT != (argv+0)->a_type) || (A_FLOAT != (argv+1)->a_type)) {
pd_error(x, "expected <x> <y> as new position");
return;
}
dx = atom_getint(argv+0) - c->gl_obj.te_xpix;
dy = atom_getint(argv+1) - c->gl_obj.te_ypix;
if(c0&&glist_isvisible(c0)) {
gobj_displace((t_gobj*)c, c0, dx, dy);
canvas_fixlinesfor(c0, (t_text*)c);
} else {
c->gl_obj.te_xpix+=dx;
c->gl_obj.te_ypix+=dy;
}
}
static void canvasobjectposition_free(t_canvasobjectposition *x)
{
outlet_free(x->xoutlet);
outlet_free(x->youtlet);
}
static void *canvasobjectposition_new(t_symbol*s, int argc, t_atom*argv)
{
if(argc>2) {
error("syntax: canvasobjectposition <canvasdepth> [<objectindex>]");
return NULL;
} else {
t_canvasobjectposition *x = (t_canvasobjectposition *)pd_new(canvasobjectposition_class);
t_glist *glist=(t_glist *)canvas_getcurrent();
t_canvas *canvas=(t_canvas*)glist_getcanvas(glist);
int index=-1;
int depth=0;
switch(argc) {
case 2:
index=atom_getint(argv+1);
case 1:
depth=atom_getint(argv);
default:
break;
}
if(depth<0)depth=0;
//post("depth=%d\tindex=%d", depth, index);
while(depth && canvas) {
canvas=canvas->gl_owner;
depth--;
}
x->x_parent = canvas;
x->x_canvas=NULL;
x->xoutlet=outlet_new(&x->x_obj, &s_list);
x->youtlet=outlet_new(&x->x_obj, &s_list);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("object"));
if(index>=0)
canvasobjectposition_object(x, index);
return (x);
}
return NULL;
}
static void canvasobjectposition_object(t_canvasobjectposition *x, t_float f)
{
t_gobj*obj=NULL;
int index=(int)f;
int i=index;
t_glist*glist=x->x_parent;
if(x->x_parent==NULL) return;
if(index<0) return;
if(NULL==glist) return;
obj=glist->gl_list;
while(i-- && obj) {
obj=obj->g_next;
}
x->x_canvas=NULL;
if(obj) {
x->x_canvas=(t_canvas*)obj;
}
}
void canvasobjectposition_setup(void)
{
canvasobjectposition_class = class_new(gensym("canvasobjectposition"),
(t_newmethod)canvasobjectposition_new, (t_method)canvasobjectposition_free,
sizeof(t_canvasobjectposition), 0,
A_GIMME, 0);
class_addbang(canvasobjectposition_class, (t_method)canvasobjectposition_bang);
class_addlist(canvasobjectposition_class, (t_method)canvasobjectposition_list);
class_addmethod(canvasobjectposition_class, (t_method)canvasobjectposition_object, gensym("object"), A_FLOAT, 0);
}
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