brave/brave-browser

Double click and drag doesn't work for text highlighting in PDFs

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#51,144 创建于 2025年11月30日

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OS/DesktopOS/Linuxfeature/pdfhelp wanted

描述

Description

Double click and drag in PDF files doesn't work.

Steps to reproduce

  1. Open a PDF file in the browser
  2. Double click on a word and drag the mouse to select a few words

Actual result

Only the first double clicked word is highlighted

Expected result

It should highlight text to the place of mouseup

Reproduces how often

Easily reproduced

Brave version (brave://version info)

Brave 1.84.141 Chromium: 142.0.7444.176 (Official Build) (64-bit) Revision dbdb1336cf66d49f25b189868cad563426d4346d OS Linux

Channel information

  • release (stable)
  • beta
  • nightly

Reproducibility

  • with Brave Shields disabled
  • with Brave Rewards disabled
  • in the latest version of Chrome

Miscellaneous information

No response

贡献者指南

技术栈
javascripthtmlcss
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
PDF rendering basicsText selection APIsBrave codebase structure
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
45
研究方向
Investigate the text selection behavior in Brave's PDF viewer. The issue likely resides in the PDF plugin or extension that handles mouse events. Examine the logic for double click and drag to select words. Look at the PDF.js library or Chromium's PDF viewer code for known issues. Check the 'brave browser' repository for PDF related components. No linked PRs or comments yet, so the fix may involve modifying the selection handler to allow dragging after double click.