dist: Added scripts for pre-processing future icon fonts

.gitignore

@@ -2,6 +2,7 @@
 /.idea/
 /.kdev4/
 /.vs/
+.venv/
 
 /cmake-build-*/
 /build*/

dist/fonts/move_private_use_area.py

@@ -0,0 +1,69 @@
+from fontTools.ttLib import TTFont
+from fontTools.ttLib.tables._c_m_a_p import CmapSubtable
+import argparse
+
+# Default PUAs
+SOURCE_PUA_START = 0xEA00
+SOURCE_PUA_END = 0x100F2
+TARGET_PUA_START = 0xF0000
+
+def move_pua_glyphs(input_font_path, output_font_path):
+    font = TTFont(input_font_path)
+
+    cmap_table = font['cmap']
+    glyph_set = font.getGlyphSet()
+
+    # Track moved glyphs
+    moved = 0
+    new_mapping = {}
+
+    # Collect original mappings in the PUA
+    for cmap in cmap_table.tables:
+        if cmap.isUnicode():
+            for codepoint, glyph_name in cmap.cmap.items():
+                if SOURCE_PUA_START <= codepoint <= SOURCE_PUA_END:
+                    offset = codepoint - SOURCE_PUA_START
+                    new_codepoint = TARGET_PUA_START + offset
+                    new_mapping[new_codepoint] = glyph_name
+                    moved += 1
+
+    if moved == 0:
+        print("No glyphs found in the source Private Use Area.")
+        return
+
+    # Remove old PUA entries from existing cmap subtables
+    for cmap in cmap_table.tables:
+        if cmap.isUnicode():
+            cmap.cmap = {
+                cp: gn for cp, gn in cmap.cmap.items()
+                if not (SOURCE_PUA_START <= cp <= SOURCE_PUA_END)
+            }
+
+    # Create or update a format 12 cmap subtable
+    found_format12 = False
+    for cmap in cmap_table.tables:
+        if cmap.format == 12 and cmap.platformID == 3 and cmap.platEncID in (10, 1):
+            cmap.cmap.update(new_mapping)
+            found_format12 = True
+            break
+
+    if not found_format12:
+        # Create a new format 12 subtable
+        cmap12 = CmapSubtable.newSubtable(12)
+        cmap12.platformID = 3
+        cmap12.platEncID = 10  # UCS-4
+        cmap12.language = 0
+        cmap12.cmap = new_mapping
+        cmap_table.tables.append(cmap12)
+
+    print(f"Moved {moved} glyphs from U+{SOURCE_PUA_START:X}–U+{SOURCE_PUA_END:X} to U+{TARGET_PUA_START:X}+")
+    font.save(output_font_path)
+    print(f"Saved modified font to {output_font_path}")
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Move PUA glyphs in a TTF file to another Unicode range.")
+    parser.add_argument("input", help="Input TTF file path")
+    parser.add_argument("output", help="Output TTF file path")
+
+    args = parser.parse_args()
+    move_pua_glyphs(args.input, args.output)

dist/fonts/ttf_to_header_file.py

@@ -0,0 +1,60 @@
+import argparse
+from fontTools.ttLib import TTFont
+import os
+
+def unicode_to_utf8_escape(codepoint):
+    return ''.join([f'\\x{b:02x}' for b in chr(codepoint).encode('utf-8')])
+
+def format_macro_name(prefix, glyph_name):
+    # Convert names like 'repo-forked' -> 'ICON_VS_REPO_FORKED'
+    return "ICON_" + prefix + "_" + glyph_name.upper().replace('-', '_')
+
+def generate_font_header(font_path, output_path, font_macro_name, font_file_macro):
+    font = TTFont(font_path)
+
+    # Use cmap to get Unicode to glyph mapping
+    codepoint_to_names = {}
+    for table in font["cmap"].tables:
+        if table.isUnicode():
+            for codepoint, glyph_name in table.cmap.items():
+                codepoint_to_names.setdefault(codepoint, []).append(glyph_name)
+
+    if not codepoint_to_names:
+        print("No Unicode-mapped glyphs found in the font.")
+        return
+
+    # Remove any glyph that is lower than 0xFF
+    codepoint_to_names = {cp: names for cp, names in codepoint_to_names.items() if cp >= 0xFF}
+
+    min_cp = min(codepoint_to_names)
+    max_cp = max(codepoint_to_names)
+
+    with open(output_path, "w", encoding="utf-8") as out:
+        out.write("#pragma once\n\n")
+        out.write(f'#define FONT_ICON_FILE_NAME_{font_macro_name} "{font_file_macro}"\n\n')
+        out.write(f"#define ICON_MIN_{font_macro_name} 0x{min_cp:04x}\n")
+        out.write(f"#define ICON_MAX_16_{font_macro_name} 0x{max_cp:04x}\n")
+        out.write(f"#define ICON_MAX_{font_macro_name} 0x{max_cp:04x}\n")
+
+        written = set()
+        for codepoint in sorted(codepoint_to_names):
+            utf8 = unicode_to_utf8_escape(codepoint)
+            comment = f"// U+{codepoint:04X}"
+            glyph_names = sorted(set(codepoint_to_names[codepoint]))
+            for i, glyph_name in enumerate(glyph_names):
+                macro = format_macro_name(font_macro_name, glyph_name)
+                if macro in written:
+                    continue
+                out.write(f"#define {macro} \"{utf8}\"\t{comment}\n")
+                written.add(macro)
+
+    print(f"Header generated at {output_path}")
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Generate C header file from TTF glyphs.")
+    parser.add_argument("font", help="Input .ttf font file")
+    parser.add_argument("output", help="Output .h file")
+    parser.add_argument("macro_name", help="Macro prefix")
+    args = parser.parse_args()
+
+    generate_font_header(args.font, args.output, args.macro_name, os.path.basename(args.font))