Skip to content

Conversation

Copy link
Contributor

Copilot AI commented Sep 12, 2025

问题描述 (Problem Description)

应用程序启动速度过慢,经分析发现是由于每次启动时都需要进行字体文件的磁盘I/O操作造成的。

The application had slow startup times due to unnecessary disk I/O operations during font loading on every application launch.

根本原因 (Root Cause)

main.pyinit_font() 方法中,字体加载过程包含以下步骤:

  1. 从Qt资源文件中读取字体数据 (":/fonts/font.ttf")
  2. 将字体数据写入临时文件 (font.ttf)
  3. 从临时文件加载字体到应用程序

这个过程在每次启动时都会执行不必要的磁盘写入操作,导致启动延迟。

解决方案 (Solution)

通过以下优化消除了磁盘I/O瓶颈:

优化前 (Before):

# 临时写入字体文件
temp_path = "font.ttf"
with open(temp_path, "wb") as f:
    f.write(data)

# 加载字体
font_id = QFontDatabase.addApplicationFont(temp_path)

优化后 (After):

# 直接从内存加载字体,无需写入临时文件
font_id = QFontDatabase.addApplicationFontFromData(data)

性能提升 (Performance Improvements)

  • 消除磁盘I/O: 完全避免了字体文件的磁盘写入操作
  • 加快启动速度: 显著减少应用程序启动时间
  • 清洁运行: 不再创建临时文件
  • 功能保持: 字体加载功能完全保持不变

技术变更 (Technical Changes)

  • 修改 init_font() 方法使用 QFontDatabase.addApplicationFontFromData() 进行内存加载
  • 移除了5行临时文件创建代码
  • .gitignore 中添加 font.ttf 防止意外提交临时文件

该优化直接解决了"最新版点名器启动速度过慢"的问题,通过消除字体加载过程中的磁盘I/O瓶颈来提升用户体验。

Fixes #19.


💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

Copy link
Contributor Author

Copilot AI commented Sep 12, 2025

@Yish1 👋 This repository doesn't have Copilot instructions. With Copilot instructions, I can understand the repository better, work faster and produce higher quality PRs.

I can generate a .github/copilot-instructions.md file for you automatically. Click here to open a pre-filled issue and assign it to me. I'll write the instructions, and then tag you for review.

Co-authored-by: Yish1 <101796381+Yish1@users.noreply.github.com>
Copilot AI changed the title [WIP] 最新版点名器启动速度过慢 优化字体加载以消除启动时的磁盘I/O操作 (Optimize font loading to eliminate disk I/O on startup) Sep 12, 2025
Copilot AI requested a review from Yish1 September 12, 2025 02:59
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

最新版点名器启动速度过慢

2 participants