From 0e78d5d868e85746a641804dade4c757f2122581 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Tue, 15 Feb 2011 21:54:03 +0000
Subject: added elapsed time block

---
diff --git a/TurtleArt/taconstants.py b/TurtleArt/taconstants.py
index 55a9b34..1fd6dfd 100644
--- a/TurtleArt/taconstants.py
+++ b/TurtleArt/taconstants.py
@@ -136,7 +136,7 @@ PALETTES = [['clean', 'forward', 'back', 'show', 'left', 'right',
              'myfunc1arg', 'userdefined',
              'cartesian', 'width', 'height', 'polar', 'addturtle', 'reskin',
              'sandwichtop_no_label', 'sandwichbottom'],
-            ['kbinput',  'keyboard', 'readpixel', 'see',
+            ['kbinput',  'keyboard', 'readpixel', 'see', 'time',
              'sound', 'volume', 'pitch'],
             ['journal', 'audio', 'video', 'description', 'hideblocks',
              'showblocks', 'fullscreen', 'savepix', 'savesvg', 'mediawait',
@@ -224,7 +224,7 @@ BOX_STYLE = ['number', 'xcor', 'ycor', 'heading', 'pensize', 'color', 'shade',
     'red', 'orange', 'yellow', 'green', 'cyan', 'blue', 'purple', 'white',
     'black', 'titlex', 'titley', 'leftx', 'topy', 'rightx', 'bottomy',
     'sound', 'volume', 'pitch', 'voltage', 'resistance', 'gray', 'see', 'rfid',
-    'luminance']
+    'luminance', 'time']
 BOX_STYLE_MEDIA = ['description', 'audio', 'journal', 'video', 'camera']
 NUMBER_STYLE = ['plus2', 'product2', 'myfunc']
 NUMBER_STYLE_VAR_ARG = ['myfunc1arg', 'myfunc2arg', 'myfunc3arg']
@@ -448,6 +448,7 @@ BLOCK_NAMES = {
     'template2x2': [' '],
     'templatelist': [' '],
     'textsize': [_('text size')],
+    'time': [_('time')],
     'titlex': [_('title x')],
     'titley': [_('title y')],
     'toppos': [_('top')],
@@ -599,6 +600,7 @@ PRIMITIVES = {
     'template2x2': 't2x2',
     'templatelist': 'bullet',
     'textsize': 'textsize',
+    'time': 'time',
     'titlex': 'titlex',
     'titley': 'titley',
     'toppos': 'tpos',
@@ -932,6 +934,7 @@ HELP_STRINGS = {
     'templatelist': _("presentation template: list of bullets"),
     'textcolor': _("holds current text color (can be used in place of a number block)"),
     'textsize': _("holds current text size (can be used in place of a number block)"),
+    'time': _("elapsed time (in seconds) since program started"),
     'toppos': _("ycor of top of screen"),
     'trash': _("Trashcan"),
     'turtle': _("Palette of turtle commands"),
diff --git a/TurtleArt/talogo.py b/TurtleArt/talogo.py
index f107323..2821826 100644
--- a/TurtleArt/talogo.py
+++ b/TurtleArt/talogo.py
@@ -465,6 +465,7 @@ class LogoCode:
                     x, y, z, a, b)],
         'textcolor': [0, lambda self: self.tw.canvas.textcolor],
         'textsize': [0, lambda self: self.tw.textsize],
+        'time': [0, lambda self: self._elapsed_time()],
         'titlex': [0, lambda self: CONSTANTS['titlex']],
         'titley': [0, lambda self: CONSTANTS['titley']],
         'topy': [0, lambda self: CONSTANTS['topy']],
@@ -518,6 +519,7 @@ class LogoCode:
         self.ag = None
         self.filepath = None
         self.dsobject = None
+        self._start_time = None
 
         # Scale factors for depreciated portfolio blocks
         self.title_height = int((self.tw.canvas.height / 20) * self.tw.scale)
@@ -595,6 +597,7 @@ class LogoCode:
         code = self._blocks_to_code(blk)
         if run_flag:
             _logger.debug("running code: %s" % (code))
+            self._start_time = time()
             self._setup_cmd(code)
             if not self.tw.hide:
                 self.tw.display_coordinates()
@@ -900,6 +903,7 @@ class LogoCode:
         self.tw.set_polar(False)
         self.tw.set_cartesian(False)
         self.hidden_turtle = None
+        self._start_time = time()
         for name in VALUE_BLOCKS:
             self.update_label_value(name)
 
@@ -1472,6 +1476,11 @@ class LogoCode:
         play_movie_from_file(self, self.filepath, self._x(), self._y(),
                                self._w(), self._h())
 
+    def _elapsed_time(self):
+        """ Number of seconds since program execution has started or
+        clean (prim_clear) block encountered """
+        return int(time() - self._start_time)
+
     def see(self):
         """ Read r, g, b from the canvas and return a corresponding palette
         color """
--
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