From 9b0d3b1122ffc3b7c2211b0cdc2cb6de6be9b242 Mon Sep 17 00:00:00 2001
From: Garret Fick <garret@ficksworkshop.com>
Date: Sun, 10 Jul 2016 15:07:17 +0800
Subject: Fix issue with chaning region mode via flash. Add options for
 controlling output from rendered gerber

---
 gerber/render/render.py | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

(limited to 'gerber/render/render.py')

diff --git a/gerber/render/render.py b/gerber/render/render.py
index 41b632c..128496f 100644
--- a/gerber/render/render.py
+++ b/gerber/render/render.py
@@ -136,6 +136,9 @@ class GerberContext(object):
             return
         color = (self.color if primitive.level_polarity == 'dark'
                  else self.background_color)
+        
+        self._pre_render_primitive(primitive)
+        
         if isinstance(primitive, Line):
             self._render_line(primitive, color)
         elif isinstance(primitive, Arc):
@@ -160,8 +163,22 @@ class GerberContext(object):
             self._render_region(primitive, color)
         elif isinstance(primitive, TestRecord):
             self._render_test_record(primitive, color)
-        else:
-            return
+        
+        self._post_render_primitive(primitive)
+        
+    def _pre_render_primitive(self, primitive):
+        """
+        Called before rendering a primitive. Use the callback to perform some action before rendering
+        a primitive, for example adding a comment.
+        """
+        return
+    
+    def _post_render_primitive(self, primitive):
+        """
+        Called after rendering a primitive. Use the callback to perform some action after rendering
+        a primitive
+        """
+        return
 
     def _render_line(self, primitive, color):
         pass
-- 
cgit