g13gui: Fix the display height

Apparently I misunderstood the source of pbm2lpbm. There is no padding, despite
the count of rows being off in the source.

g13gui/g13gui/bitwidgets/display.py

@@ -10,7 +10,7 @@ from g13gui.observer import ChangeType
 
 class DisplayMetrics(object):
     WIDTH_PIXELS = 160
-    HEIGHT_PIXELS = 43
+    HEIGHT_PIXELS = 48
 
 
 LPBM_LENGTH = 960
@@ -42,9 +42,6 @@ def ImageToLPBM(image):
             col = 0
             row += 8
 
-    # padding? lpbm files are always 960 bytes, the last bytes are filled with garbage.
-    bio.write(bytes(LPBM_LENGTH - maxBytes))
-
     return bio.getvalue()
 
 

g13gui/g13gui/bitwidgets/display_tests.py

@@ -16,8 +16,9 @@ class DisplayTests(unittest.TestCase):
 
     def testConversion(self):
         ctx = self.d.getContext()
+        ctx.rectangle((0, 0, 160, 43), fill=1)
         ctx.text((0, 0), "Hello world!",
-                 font=FontManager.getFont(Fonts.HUGE), fill=1)
+                 font=FontManager.getFont(Fonts.HUGE), fill=0)
         result = ImageToLPBM(self.d._bitmap)
 
         self.assertEqual(len(result), LPBM_LENGTH)