Improve SDL Event handler

asn1_value_editor/resources.py

@@ -2,7 +2,7 @@
 
 # Resource object code
 #
-# Created: Fri Dec 19 11:56:51 2014
+# Created: Fri Dec 19 22:34:24 2014
 #      by: The Resource Compiler for PySide (Qt v4.8.6)
 #
 # WARNING! All changes made in this file will be lost!

asn1_value_editor/sdlHandler.py

@@ -15,6 +15,7 @@
 """
 
 import os
+import ctypes
 
 from PySide.QtGui import QDockWidget
 from PySide.QtCore import Slot, Qt
@@ -24,6 +25,11 @@ try:
 except ImportError:
     print 'OpenGEODE module is not available'
 
+try:
+    import dataview_uniq_asn as ASN1
+except ImportError:
+    print 'No Python A mapper generated dataview, SDL handler cannot be used'
+    ASN1 = None
 
 class sdlHandler(object):
     '''
@@ -42,11 +48,11 @@ class sdlHandler(object):
         self.ast = opengeode.parse(pr_files)
         try:
             root_ast = self.ast[0]
-            proc = root_ast.processes[0]
+            self.proc = root_ast.processes[0]
         except IndexError:
             raise IOError('SDL Handler failed to initialize')
-        opengeode.Helper.flatten(proc)
-        graph = opengeode.Statechart.create_dot_graph(proc)
+        opengeode.Helper.flatten(self.proc)
+        graph = opengeode.Statechart.create_dot_graph(self.proc)
         self.sdl_scene = opengeode.SDL_Scene('statechart')
         self.sdl_view = opengeode.SDL_View(self.sdl_scene)
         opengeode.Statechart.render_statechart(self.sdl_scene, graph)
@@ -84,5 +90,21 @@ class sdlHandler(object):
     def on_event(self):
         ''' Process signals indicating that a PI was called in the shared lib:
             read the global variables and display them '''
+        if not ASN1:
+            # The dataview must have been loaded to create ASN.1 native types
+            return
         print 'Event!'
+        for var, (sort, _) in self.proc.variables.viewitems():
+            # get internal variables, translate them to swig, and print them
+            print 'Reading variable "{}" of type "{}"'.format(var,
+                                                       sort.ReferencedTypeName)
+            get_size = getattr(self.dll, "{}_size".format(var))
+            get_size.restype = ctypes.c_long
+            get_value = getattr(self.dll, "{}_value".format(var))
+            get_value.restype = ctypes.c_char_p
+            size = get_size()
+            print "size= ", size
+            #value = get_value()
+            #as_bytes = ctypes.cast(value,
+            #                       ctypes.POINTER((ctypes.c_byte * size)))