aboutsummaryrefslogtreecommitdiff
path: root/src/canvasposition.c
blob: 03f839c6d860d817896643032de602d99b0c5829 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144

/******************************************************
 *
 * 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. [canvasposition 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"

/* ------------------------- canvasposition ---------------------------- */

static t_class *canvasposition_class;

typedef struct _canvasposition
{
  t_object  x_obj;
  t_canvas  *x_canvas;

  t_outlet*xoutlet, *youtlet;
} t_canvasposition;


static void canvasposition_bang(t_canvasposition *x)
{
  t_canvas*c=x->x_canvas;
  t_canvas*c0=0;

  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;


  c0=c->gl_owner;
  if(c0!=0) {
    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 canvasposition_list(t_canvasposition *x, t_symbol*s, int argc, t_atom*argv)
{
  t_canvas*c=x->x_canvas;
  t_canvas*c0=0;
  int dx, dy;

  if(!c) return;
  c0=c->gl_owner;

  if(argc==0){
    canvasposition_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 canvasposition_free(t_canvasposition *x)
{
  outlet_free(x->xoutlet);
  outlet_free(x->youtlet);
}

static void *canvasposition_new(t_floatarg f)
{
  t_canvasposition *x = (t_canvasposition *)pd_new(canvasposition_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_list);
  x->youtlet=outlet_new(&x->x_obj, &s_list);

  return (x);
}

void canvasposition_setup(void)
{
  canvasposition_class = class_new(gensym("canvasposition"), 
                                   (t_newmethod)canvasposition_new, (t_method)canvasposition_free, 
                                   sizeof(t_canvasposition), 0,
                                   A_DEFFLOAT, 0);
  class_addbang(canvasposition_class, (t_method)canvasposition_bang);
  class_addlist(canvasposition_class, (t_method)canvasposition_list);
}