extract glyph width prop

README.md

@@ -201,8 +201,8 @@ Feature Options:
                     zero,cv01,ss07,ss08`). No effect on variable format
   --apply-fea-file  Load feature file from `source/features/{regular,italic}.fea` to
                     variable font
-  --hinted          Use hinted font as base font
+  --hinted          Use hinted font as base font in NF / CN / NF-CN
-  --no-hinted       Use unhinted font as base font
+  --no-hinted       Use unhinted font as base font in NF / CN / NF-CN
   --liga            Preserve all the ligatures
   --no-liga         Remove all the ligatures
   --cn-narrow       Make CN characters narrow (experimental)
@@ -214,7 +214,7 @@ Build Options:
   --no-cn           Do not build Chinese version
   --cn-both         Build both `Maple Mono CN` and `Maple Mono NF CN`. Nerd-Font version
                     must be enabled
-  --ttf-only        Only build unhinted TTF format
+  --ttf-only        Only build TTF format
   --cache           Reuse font cache of TTF, OTF and Woff2 formats
   --cn-rebuild      Reinstantiate CN base font
   --archive         Build font archives with config and license. If has `--cache` flag,

build.py

@@ -93,7 +93,7 @@ def parse_args():
         dest="hinted",
         default=None,
         action="store_true",
-        help="Use hinted font as base font",
+        help="Use hinted font as base font in NF / CN / NF-CN",
     )
     hint_group.add_argument(
         "--no-hinted",
@@ -268,6 +268,8 @@ class FontConfig:
             # whether to use pre-instantiated static CN font as base font
             "use_static_base_font": True,
         }
+        self.glyph_width = 600
+        self.glyph_width_cn_narrow = 1000
         self.__load_config(args.normal)
         self.__load_args(args)
 
@@ -375,6 +377,18 @@ class FontConfig:
         self.cn["with_nerd_font"] = not self.cn["with_nerd_font"]
         return True
 
+    def get_valid_glyph_width_list(self, cn=False):
+        if cn:
+            return [
+                0,
+                self.glyph_width,
+                self.glyph_width_cn_narrow
+                if self.cn["narrow"]
+                else 2 * self.glyph_width,
+            ]
+        else:
+            return [0, self.glyph_width]
+
 
 class BuildOption:
     def __init__(self, config: FontConfig):
@@ -929,7 +943,11 @@ def build_cn(f: str, font_config: FontConfig, build_option: BuildOption):
     )
 
     if font_config.cn["narrow"]:
-        change_glyph_width(font=cn_font, match_width=1200, target_width=1000)
+        change_glyph_width(
+            font=cn_font,
+            match_width=2 * font_config.glyph_width,
+            target_width=font_config.glyph_width_cn_narrow,
+        )
 
     # https://github.com/subframe7536/maple-font/issues/239
     # already removed at merge time
@@ -972,8 +990,6 @@ def main():
     build_option = BuildOption(font_config)
     build_option.load_cn_dir_and_suffix(font_config.should_build_nf_cn())
 
-    glyph_width = 600
-
     if parsed_args.dry:
         print("font_config:", json.dumps(font_config.__dict__, indent=4))
         if not is_ci():
@@ -1039,7 +1055,9 @@ def main():
                 3,
             )
 
-            verify_glyph_width(font, [0, glyph_width])
+            verify_glyph_width(
+                font=font, expect_widths=font_config.get_valid_glyph_width_list()
+            )
 
             add_gasp(font)
 
@@ -1146,10 +1164,10 @@ def main():
         build_option.is_cn_built = True
 
         verify_glyph_width(
-            TTFont(
+            font=TTFont(
                 joinPaths(build_option.output_cn, listdir(build_option.output_cn)[0])
             ),
-            [0, glyph_width, 1000 if font_config.cn['narrow'] else glyph_width * 2],
+            expect_widths=font_config.get_valid_glyph_width_list(True),
         )
 
     # =========================================================================================