order opentype features by their state

make sure to set the off state features first
typemytype · Jan 20, 2017 · 853d42f · 853d42f
1 parent 32e9a94
commit 853d42f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/drawBot/context/baseContext.py b/drawBot/context/baseContext.py
@@ -864,7 +864,10 @@ def append(self, txt, **kwargs):
                 warnings.warn("font: %s is not installed, back to the fallback font: %s" % (fontName, ff))
                 font = AppKit.NSFont.fontWithName_size_(ff, self._fontSize)
             coreTextfeatures = []
-            for featureTag, value in self._openTypeFeatures.items():
+            # sort features by their on/off state
+            # set all disabled features first
+            orderedOpenTypeFeatures = sorted(self._openTypeFeatures.items(), key=lambda (k, v): v)
+            for featureTag, value in orderedOpenTypeFeatures:
                 if not value:
                     featureTag = "%s_off" % featureTag
                 if featureTag in openType.featureMap: