Optional cross-platform outline rendering mode

Lib/fontgoggles/misc/platform.py

@@ -54,7 +54,7 @@ def drawCOLRv1Glyph(colorFont, glyphName, colorPalette, defaultColor):
             palette=colorPalette,
             textColor=defaultColor,
         )
-    
+
     Pen = CocoaPen
 
 
@@ -82,11 +82,11 @@ def convertColor(c):
     @staticmethod
     def drawCOLRv1Glyph(colorFont, glyphName, colorPalette, defaultColor):
         raise NotImplementedError()
-    
+
     class Pen(RecordingPen):
-        def __init__(self, glyphSet): # to match CocoaPen constructor
+        def __init__(self, glyphSet):  # to match CocoaPen constructor
             super().__init__()
-        
+
         @property
         def path(self):
             return self
@@ -99,12 +99,12 @@ def path(self):
 
 
 def setUseCocoa(onOff):
-    global platform
+    global platform, _platform
     if onOff:
         assert CAN_COCOA
     _platform = PlatformCocoa if onOff else PlatformGeneric
     platform.__dict__.update(**_platform.__dict__)
 
 
 def getUseCocoa():
-    return platform is PlatformCocoa
+    return _platform is PlatformCocoa

Tests/test_noCocoa.py

@@ -2,7 +2,7 @@
 from asyncio import run
 from fontgoggles.font import getOpener
 from fontgoggles.misc.textInfo import TextInfo
-from fontgoggles.misc.platform import platform, setUseCocoa
+from fontgoggles.misc.platform import setUseCocoa, getUseCocoa
 from testSupport import getFontPath
 from fontTools.pens.recordingPen import RecordingPen
 
@@ -31,13 +31,17 @@ def getDrawings(path):
 
         return glyphDrawings
 
+    assert getUseCocoa() == True
+
     for font_path in font_paths:
         glyphDrawings = getDrawings(font_path)
         for g in glyphDrawings:
             assert "NSBezierPath" in str(type(g.path))
 
     setUseCocoa(False)
 
+    assert getUseCocoa() == False
+
     for font_path in font_paths:
         glyphDrawings = getDrawings(font_path)
         for g in glyphDrawings: