Terminal: use BFont::IsFullAndHalfFixed.

src/apps/terminal/Globals.cpp

@@ -17,28 +17,8 @@ BClipboard* gMouseClipboard = NULL;
 bool
 IsFontUsable(const BFont& font)
 {
-	// TODO: If BFont::IsFullAndHalfFixed() was implemented, we could
-	// use that. But I don't think it's easily implementable using
-	// Freetype.
-
-	if (font.IsFixed())
+	if (font.IsFixed() || font.IsFullAndHalfFixed())
 		return true;
 
-	// manually check if all applicable chars are the same width
-	char buffer[2] = { ' ', 0 };
-	int firstWidth = (int)ceilf(font.StringWidth(buffer));
-
-	// TODO: Workaround for broken fonts/font_subsystem
-	if (firstWidth <= 0)
-		return false;
-
-	for (int c = ' ' + 1; c <= 0x7e; c++) {
-		buffer[0] = c;
-		int width = (int)ceilf(font.StringWidth(buffer));
-
-		if (width != firstWidth)
-			return false;
-	}
-
-	return true;
+	return false;
 }