added a class to test for the existance of other classes

svn path=/trunk/externals/iem/iemguts/; revision=10286

1 files changed, 72 insertions, 0 deletions

diff --git a/src/classtest.c b/src/classtest.c
new file mode 100644
index 0000000..b8a8a7b
--- /dev/null
+++ b/src/classtest.c
@@ -0,0 +1,72 @@
+
+/******************************************************
+ *
+ * classtest - 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 send messages to upstream canvases
+ * by default it sends messages to the containing canvas, but you can give the
+ * "depth" as argument;
+ * e.g. [classtest 1] will send messages to the parent of the containing canvas
+ */
+
+#include "m_pd.h"
+#include "g_canvas.h"
+
+int glist_getindex(t_glist *x, t_gobj *y);
+
+/* ------------------------- classtest ---------------------------- */
+
+static t_class *classtest_class;
+
+typedef struct _classtest
+{
+  t_object  x_obj;
+  t_outlet *x_out;
+} t_classtest;
+
+static void classtest_symbol(t_classtest *x, t_symbol*s)
+{
+  t_float result=0.;
+  if(0!=zgetfn(&pd_objectmaker, s))
+    result=1.;
+
+  outlet_float(x->x_out, result);
+
+
+
+}
+
+static void classtest_free(t_classtest *x)
+{
+  outlet_free(x->x_out);
+}
+
+static void *classtest_new(t_floatarg f)
+{
+  t_classtest *x = (t_classtest *)pd_new(classtest_class);
+
+  x->x_out = outlet_new(&x->x_obj, &s_float);
+  return (x);
+}
+
+void classtest_setup(void)
+{
+  classtest_class = class_new(gensym("classtest"), (t_newmethod)classtest_new,
+                               (t_method)classtest_free, sizeof(t_classtest), 0, 
+                              0);
+  class_addsymbol(classtest_class, (t_method)classtest_symbol);
+}