Update lettering_svg_font_to_layers.py (#3883)

* Update lettering_svg_font_to_layers.py

when we  get a glyph from the Private Unicode Area, the entry point has no meaning, but hopefully we can get some good information from the glyph_name

* Update font_info.py

kerning information must be associated to the right nanme glyph layer in case of PUA letters

* remove commented code

2 files changed, 34 insertions, 2 deletions

diff --git a/lib/extensions/lettering_svg_font_to_layers.py b/lib/extensions/lettering_svg_font_to_layers.py
index 0bcd7003..323c941a 100644
--- a/lib/extensions/lettering_svg_font_to_layers.py
+++ b/lib/extensions/lettering_svg_font_to_layers.py
@@ -167,9 +167,38 @@ class LetteringSvgFontToLayers(InkstitchExtension):
         Converts a single glyph into a new SVG layer, applying scaling and coordinate transformation.
         """
         unicode_char = glyph.get("unicode")
-        if unicode_char is None or unicodedata.category(unicode_char[0])[0] != "Z":
-            # all unicode with category starting with 'Z' is not rendered, no need to create layers with path.d =""
 
+        glyph_name = glyph.get("glyph-name").split('.')
+        # if we are in the PUA zone, then we need to find the information in the glyph_name
+        if unicode_char is None or ord(unicode_char[0]) >= 57344:
+            if len(glyph_name) == 2:
+                unicode_char = glyph_name[0]
+            else:
+                return
+
+        typographic_feature = ''
+        if len(glyph_name) == 2:
+            typographic_feature = glyph_name[1]
+        else:
+            arabic_form = glyph.get('arabic-form', None)
+            if arabic_form is not None and len(arabic_form) > 4:
+                typographic_feature = arabic_form[:4]
+        if typographic_feature:
+            typographic_feature = f".{typographic_feature}"
+
+        layer = self.svg.add(Layer.new(f"GlyphLayer-{unicode_char}{typographic_feature}"))
+
+        # glyph layers (except the first one) are initially hidden
+        if hide_layer:
+            layer.style["display"] = "none"
+
+        # Using curve description in d attribute of svg:glyph
+        path = layer.add(PathElement())
+        path.path = self.flip_cordinate_system(glyph, emsize, baseline, scale_by)
+
+        unicode_char = glyph.get("unicode")
+        if unicode_char is None:
+           
             glyph_name = glyph.get("glyph-name").split('.')
             if unicode_char is None:
                 if len(glyph_name) == 2:
diff --git a/lib/lettering/font_info.py b/lib/lettering/font_info.py
index 8bf35900..4c783531 100644
--- a/lib/lettering/font_info.py
+++ b/lib/lettering/font_info.py
@@ -40,9 +40,12 @@ class FontFileInfo(object):
                 hax = float(hax)
 
             glyph_name = glyph.get('glyph-name', None)
+            
             if glyph_name is not None:
                 glyph_name = glyph_name.split('.')
                 if len(glyph_name) == 2:
+                    if ord(unicode_char[0]) >= 57344 :
+                        unicode_char = glyph_name[0]
                     typographic_feature = glyph_name[1]
                     unicode_char += f'.{typographic_feature}'
                 else: