Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--pysamples/uturn.py17
1 files changed, 11 insertions, 6 deletions
diff --git a/pysamples/uturn.py b/pysamples/uturn.py
index cd1b18e..b38542a 100644
--- a/pysamples/uturn.py
+++ b/pysamples/uturn.py
@@ -22,23 +22,28 @@
# This procedure is invoked when the user-definable block on the "extras"
# palette is selected.
-def myblock(lc, arg):
+def myblock(parent, arg):
''' Add a uturn block to the 'turtle' palette '''
+
from TurtleArt.tapalette import make_palette, palette_name_to_index
from TurtleArt.talogo import primitive_dictionary
from gettext import gettext as _
+ # Choose a palette for the new block.
palette = make_palette('turtle')
+
+ # Create a new block prototype.
palette.add_block('uturn',
style='basic-style-extended-vertical',
label=_('uturn'),
prim_name='uturn',
help_string=_('make a uturn'))
- lc.tw.lc.def_prim('uturn', 0,
+ # Add its primitive to the LogoCode dictionary.
+ parent.tw.lc.def_prim('uturn', 0,
lambda self: primitive_dictionary['set'](
- 'heading', lc.tw.canvas.seth,
- lc.tw.canvas.heading + 180))
+ 'heading', parent.tw.canvas.seth, parent.tw.canvas.heading + 180))
- lc.tw.show_toolbar_palette(palette_name_to_index('turtle'),
- regenerate=True)
+ # Regenerate the palette, which will now include the new block.
+ parent.tw.show_toolbar_palette(palette_name_to_index('turtle'),
+ regenerate=True)