renamed [parentposition] to [canvasposition] (consistent naming scheme);

added more helppatches

svn path=/trunk/externals/iem/iemguts/; revision=10272

1 files changed, 144 insertions, 0 deletions

diff --git a/src/canvasposition.c b/src/canvasposition.c
new file mode 100644
index 0000000..03f839c
--- /dev/null
+++ b/src/canvasposition.c
@@ -0,0 +1,144 @@
+
+/******************************************************
+ *
+ * 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);
+}