Initial project import

tools/gen_font.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+"""Generate an 8x8 bitmap font for Agila from a system monospace font."""
+
+from PIL import Image, ImageDraw, ImageFont
+
+font_names = [
+    "/System/Library/Fonts/Menlo.ttc",
+    "/System/Library/Fonts/Monaco.dfont",
+    "/Library/Fonts/Courier New.ttf",
+    "/System/Library/Fonts/Courier.dfont",
+]
+
+font = None
+for name in font_names:
+    try:
+        font = ImageFont.truetype(name, 8)
+        print(f"Using font: {name}")
+        break
+    except Exception as e:
+        print(f"Failed {name}: {e}")
+
+if font is None:
+    print("No suitable font found, using default")
+    font = ImageFont.load_default()
+
+w, h = 8, 8
+values = []
+for code in range(32, 127):
+    ch = chr(code)
+    img = Image.new("L", (w, h), 0)
+    draw = ImageDraw.Draw(img)
+    draw.text((0, 0), ch, font=font, fill=255)
+    bytes_data = []
+    for col in range(w):
+        byte_val = 0
+        for row in range(h):
+            px = img.getpixel((col, row))
+            if px > 127:
+                byte_val |= 1 << row
+        bytes_data.append(byte_val)
+    values.extend(bytes_data)
+
+with open("api/v/font5x7.fv", "w") as f:
+    f.write("// font5x7.fv - 8x8 bitmap font (ASCII 32-126)\n")
+    f.write("module agila\n\n")
+    f.write("const font5x7 = [u8(0x{:02x}), ".format(values[0]))
+    f.write(", ".join(f"0x{v:02x}" for v in values[1:]))
+    f.write("]\n\n")
+    f.write("pub fn glyph5x7(ch rune) []u8 {\n")
+    f.write("\tcode := int(ch) - 32\n")
+    f.write("\tif code < 0 || code > 94 {\n")
+    f.write("\t\treturn font5x7[0..8] // space\n")
+    f.write("\t}\n")
+    f.write("\toff := code * 8\n")
+    f.write("\treturn font5x7[off..off+8]\n")
+    f.write("}\n")
+
+print(f"Generated {len(values)} bytes for {len(values)//8} glyphs")