⚡ Optimize font size and add more fonts
This commit is contained in:
254
frontend/src/assets/fonts/HarmonyOS/font_compressor.py
Normal file
254
frontend/src/assets/fonts/HarmonyOS/font_compressor.py
Normal file
@@ -0,0 +1,254 @@
|
||||
#!/usr/bin/env python3
|
||||
# -*- coding: utf-8 -*-
|
||||
"""
|
||||
鸿蒙字体压缩工具
|
||||
使用 fonttools 库压缩 TTF 字体文件，减小文件大小
|
||||
"""
|
||||
|
||||
import os
|
||||
import sys
|
||||
import subprocess
|
||||
import shutil
|
||||
from pathlib import Path
|
||||
from typing import List, Tuple
|
||||
|
||||
def check_dependencies():
|
||||
"""检查必要的依赖是否已安装"""
|
||||
missing_packages = []
|
||||
|
||||
# 检查 fonttools
|
||||
try:
|
||||
import fontTools
|
||||
except ImportError:
|
||||
missing_packages.append('fonttools')
|
||||
|
||||
# 检查 brotli
|
||||
try:
|
||||
import brotli
|
||||
except ImportError:
|
||||
missing_packages.append('brotli')
|
||||
|
||||
# 检查 pyftsubset 命令是否可用
|
||||
try:
|
||||
result = subprocess.run(['pyftsubset', '--help'], capture_output=True, text=True)
|
||||
if result.returncode != 0:
|
||||
missing_packages.append('fonttools[subset]')
|
||||
except FileNotFoundError:
|
||||
if 'fonttools' not in missing_packages:
|
||||
missing_packages.append('fonttools[subset]')
|
||||
|
||||
if missing_packages:
|
||||
print(f"缺少必要的依赖包: {', '.join(missing_packages)}")
|
||||
print("请运行以下命令安装:")
|
||||
print(f"pip install {' '.join(missing_packages)}")
|
||||
return False
|
||||
|
||||
return True
|
||||
|
||||
def get_file_size(file_path: str) -> int:
|
||||
"""获取文件大小（字节）"""
|
||||
return os.path.getsize(file_path)
|
||||
|
||||
def format_file_size(size_bytes: int) -> str:
|
||||
"""格式化文件大小显示"""
|
||||
if size_bytes < 1024:
|
||||
return f"{size_bytes} B"
|
||||
elif size_bytes < 1024 * 1024:
|
||||
return f"{size_bytes / 1024:.2f} KB"
|
||||
else:
|
||||
return f"{size_bytes / (1024 * 1024):.2f} MB"
|
||||
|
||||
def compress_font(input_path: str, output_path: str, compression_level: str = "basic") -> bool:
|
||||
"""
|
||||
压缩单个字体文件
|
||||
|
||||
Args:
|
||||
input_path: 输入字体文件路径
|
||||
output_path: 输出字体文件路径
|
||||
compression_level: 压缩级别 ("basic", "medium", "aggressive")
|
||||
|
||||
Returns:
|
||||
bool: 压缩是否成功
|
||||
"""
|
||||
try:
|
||||
# 基础压缩参数
|
||||
base_args = [
|
||||
"pyftsubset", input_path,
|
||||
"--output-file=" + output_path,
|
||||
"--flavor=woff2", # 输出为 WOFF2 格式，压缩率更高
|
||||
"--with-zopfli", # 使用 Zopfli 算法进一步压缩
|
||||
]
|
||||
|
||||
# 根据压缩级别设置不同的参数
|
||||
if compression_level == "basic":
|
||||
# 基础压缩：保留常用字符和功能
|
||||
args = base_args + [
|
||||
"--unicodes=U+0020-007F,U+00A0-00FF,U+2000-206F,U+2070-209F,U+20A0-20CF", # 基本拉丁字符、标点符号等
|
||||
"--layout-features=*", # 保留所有布局特性
|
||||
"--glyph-names", # 保留字形名称
|
||||
"--symbol-cmap", # 保留符号映射
|
||||
"--legacy-cmap", # 保留传统字符映射
|
||||
"--notdef-glyph", # 保留 .notdef 字形
|
||||
"--recommended-glyphs", # 保留推荐字形
|
||||
"--name-IDs=*", # 保留所有名称ID
|
||||
"--name-legacy", # 保留传统名称
|
||||
]
|
||||
elif compression_level == "medium":
|
||||
# 中等压缩：移除一些不常用的功能
|
||||
args = base_args + [
|
||||
"--unicodes=U+0020-007F,U+00A0-00FF,U+2000-206F", # 减少字符范围
|
||||
"--layout-features=kern,liga,clig", # 只保留关键布局特性
|
||||
"--no-glyph-names", # 移除字形名称
|
||||
"--notdef-glyph",
|
||||
"--name-IDs=1,2,3,4,5,6", # 只保留基本名称ID
|
||||
]
|
||||
else: # aggressive
|
||||
# 激进压缩：最大程度减小文件大小
|
||||
args = base_args + [
|
||||
"--unicodes=U+0020-007F", # 只保留基本ASCII字符
|
||||
"--no-layout-features", # 移除所有布局特性
|
||||
"--no-glyph-names", # 移除字形名称
|
||||
"--no-symbol-cmap", # 移除符号映射
|
||||
"--no-legacy-cmap", # 移除传统映射
|
||||
"--notdef-glyph",
|
||||
"--name-IDs=1,2", # 只保留最基本的名称
|
||||
"--desubroutinize", # 去子程序化（可能减小CFF字体大小）
|
||||
]
|
||||
|
||||
# 执行压缩命令
|
||||
result = subprocess.run(args, capture_output=True, text=True)
|
||||
|
||||
if result.returncode == 0:
|
||||
return True
|
||||
else:
|
||||
print(f"压缩失败: {result.stderr}")
|
||||
return False
|
||||
|
||||
except Exception as e:
|
||||
print(f"压缩过程中出现错误: {str(e)}")
|
||||
return False
|
||||
|
||||
def find_font_files(directory: str) -> List[str]:
|
||||
"""查找目录中的所有字体文件"""
|
||||
font_extensions = ['.ttf', '.otf', '.woff', '.woff2']
|
||||
font_files = []
|
||||
|
||||
for root, dirs, files in os.walk(directory):
|
||||
for file in files:
|
||||
if any(file.lower().endswith(ext) for ext in font_extensions):
|
||||
font_files.append(os.path.join(root, file))
|
||||
|
||||
return font_files
|
||||
|
||||
def compress_fonts_batch(font_directory: str, compression_level: str = "basic"):
|
||||
"""
|
||||
批量压缩字体文件
|
||||
|
||||
Args:
|
||||
font_directory: 字体文件目录
|
||||
compression_level: 压缩级别
|
||||
"""
|
||||
if not os.path.exists(font_directory):
|
||||
print(f"错误: 目录 {font_directory} 不存在")
|
||||
return
|
||||
|
||||
# 查找所有字体文件
|
||||
font_files = find_font_files(font_directory)
|
||||
|
||||
if not font_files:
|
||||
print("未找到字体文件")
|
||||
return
|
||||
|
||||
print(f"找到 {len(font_files)} 个字体文件")
|
||||
print(f"压缩级别: {compression_level}")
|
||||
print(f"压缩后的文件将与源文件放在同一目录，扩展名为 .woff2")
|
||||
print("-" * 60)
|
||||
|
||||
total_original_size = 0
|
||||
total_compressed_size = 0
|
||||
successful_compressions = 0
|
||||
|
||||
for i, font_file in enumerate(font_files, 1):
|
||||
print(f"[{i}/{len(font_files)}] 处理: {os.path.basename(font_file)}")
|
||||
|
||||
# 获取原始文件大小
|
||||
original_size = get_file_size(font_file)
|
||||
total_original_size += original_size
|
||||
|
||||
# 生成输出文件名（保持原文件名，只改变扩展名）
|
||||
file_dir = os.path.dirname(font_file)
|
||||
base_name = os.path.splitext(os.path.basename(font_file))[0]
|
||||
output_file = os.path.join(file_dir, f"{base_name}.woff2")
|
||||
|
||||
# 压缩字体
|
||||
if compress_font(font_file, output_file, compression_level):
|
||||
if os.path.exists(output_file):
|
||||
compressed_size = get_file_size(output_file)
|
||||
total_compressed_size += compressed_size
|
||||
successful_compressions += 1
|
||||
|
||||
# 计算压缩率
|
||||
compression_ratio = (1 - compressed_size / original_size) * 100
|
||||
|
||||
print(f" ✓ 成功: {format_file_size(original_size)} → {format_file_size(compressed_size)} "
|
||||
f"(压缩 {compression_ratio:.1f}%)")
|
||||
else:
|
||||
print(f" ✗ 失败: 输出文件未生成")
|
||||
else:
|
||||
print(f" ✗ 失败: 压缩过程出错")
|
||||
|
||||
print()
|
||||
|
||||
# 显示总结
|
||||
print("=" * 60)
|
||||
print("压缩完成!")
|
||||
print(f"成功压缩: {successful_compressions}/{len(font_files)} 个文件")
|
||||
|
||||
if successful_compressions > 0:
|
||||
total_compression_ratio = (1 - total_compressed_size / total_original_size) * 100
|
||||
print(f"总大小: {format_file_size(total_original_size)} → {format_file_size(total_compressed_size)}")
|
||||
print(f"总压缩率: {total_compression_ratio:.1f}%")
|
||||
print(f"节省空间: {format_file_size(total_original_size - total_compressed_size)}")
|
||||
|
||||
def main():
|
||||
"""主函数"""
|
||||
print("鸿蒙字体压缩工具")
|
||||
print("=" * 60)
|
||||
|
||||
# 检查依赖
|
||||
if not check_dependencies():
|
||||
return
|
||||
|
||||
# 获取当前脚本所在目录
|
||||
current_dir = os.path.dirname(os.path.abspath(__file__))
|
||||
|
||||
# 设置默认字体目录
|
||||
font_directory = current_dir
|
||||
|
||||
print(f"字体目录: {font_directory}")
|
||||
|
||||
# 让用户选择压缩级别
|
||||
print("\n请选择压缩级别:")
|
||||
print("1. 基础压缩 (保留大部分功能，适合网页使用)")
|
||||
print("2. 中等压缩 (平衡文件大小和功能)")
|
||||
print("3. 激进压缩 (最小文件大小，可能影响显示效果)")
|
||||
|
||||
while True:
|
||||
choice = input("\n请输入选择 (1-3): ").strip()
|
||||
if choice == "1":
|
||||
compression_level = "basic"
|
||||
break
|
||||
elif choice == "2":
|
||||
compression_level = "medium"
|
||||
break
|
||||
elif choice == "3":
|
||||
compression_level = "aggressive"
|
||||
break
|
||||
else:
|
||||
print("无效选择，请输入 1、2 或 3")
|
||||
|
||||
# 开始批量压缩
|
||||
compress_fonts_batch(font_directory, compression_level=compression_level)
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
Reference in New Issue
Block a user