ARK-OS/tools/font_gen.py

#
# Copyright 2026 Aarav Ravindra Kharade
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

import os
from PIL import Image, ImageDraw, ImageFont

def generate_c_data(font_size, char_width, char_height, data_name):
    try:
        font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", font_size)
    except:
        font = ImageFont.load_default()

    chars = [chr(i) for i in range(32, 127)]
    c_data = f"const unsigned char ArkFontRobotoBold_{data_name}[] = {{\n        "
    
    vals = []
    for c in chars:
        img = Image.new('L', (char_width, char_height), color=0)
        draw = ImageDraw.Draw(img)
        # Use a fixed baseline
        x = char_width * 0.1
        y = char_height * 0.8
        draw.text((x, y), c, font=font, anchor="ls", fill=255)
        
        for py in range(char_height):
            for px in range(char_width):
                pixel = img.getpixel((px, py))
                vals.append(str(pixel))
                
    # Format array
    c_data += ", ".join(vals)
    c_data += "\n};\n"
    return c_data

c_out = ""
c_out += generate_c_data(28, 32, 36, "data")
c_out += "\n"
c_out += generate_c_data(56, 64, 72, "data2x")
c_out += "\n"
c_out += generate_c_data(84, 96, 108, "data3x")
c_out += "\n"
c_out += generate_c_data(112, 128, 144, "data4x")
c_out += "\n"
c_out += generate_c_data(168, 192, 216, "data6x")

with open("arkrt/ArkGraphics/ArkFontRobotoBoldData.c", "w") as f:
    f.write(c_out)

swift_out = """//
// Copyright 2026 Aarav
//

@_silgen_name("ArkFontRobotoBold_data") public var ArkFontRobotoBold_data_sym: UInt8
@_silgen_name("ArkFontRobotoBold_data2x") public var ArkFontRobotoBold_data2x_sym: UInt8
@_silgen_name("ArkFontRobotoBold_data3x") public var ArkFontRobotoBold_data3x_sym: UInt8
@_silgen_name("ArkFontRobotoBold_data4x") public var ArkFontRobotoBold_data4x_sym: UInt8
@_silgen_name("ArkFontRobotoBold_data6x") public var ArkFontRobotoBold_data6x_sym: UInt8

public struct ArkFontRobotoBold {
    public static let charWidth = 32
    public static let charHeight = 36
    public static let charWidth2x = 64
    public static let charHeight2x = 72
    public static let charWidth3x = 96
    public static let charHeight3x = 108
    public static let charWidth4x = 128
    public static let charHeight4x = 144
    public static let charWidth6x = 192
    public static let charHeight6x = 216

    public static var data: UnsafePointer<UInt8> {
        return withUnsafePointer(to: &ArkFontRobotoBold_data_sym) { $0 }
    }
    public static var data2x: UnsafePointer<UInt8> {
        return withUnsafePointer(to: &ArkFontRobotoBold_data2x_sym) { $0 }
    }
    public static var data3x: UnsafePointer<UInt8> {
        return withUnsafePointer(to: &ArkFontRobotoBold_data3x_sym) { $0 }
    }
    public static var data4x: UnsafePointer<UInt8> {
        return withUnsafePointer(to: &ArkFontRobotoBold_data4x_sym) { $0 }
    }
    public static var data6x: UnsafePointer<UInt8> {
        return withUnsafePointer(to: &ArkFontRobotoBold_data6x_sym) { $0 }
    }
}
"""

with open("arkrt/ArkGraphics/ArkFontRobotoBold.swift", "w") as f:
    f.write(swift_out)
print("Generated arkrt/ArkGraphics/ArkFontRobotoBold.swift and ArkFontRobotoBoldData.c successfully!")