notepad-plus-plus / notepad-plus-plus/notepad-plus-plus

[BUG] <title>Browsing large file XML lagging

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#15,184 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language
C++
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Description

Is there an existing issue for this?
  • I have searched the existing issues
Description of the Issue

When opening tens of thousands of lines of XML file and opening the function list view, the mouse scrolling through the context will become sluggish

Steps To Reproduce
  1. open xml file

  2. open function list view
    all_process.txt

  3. Mouse browsing context

Current Behavior

no

Expected Behavior

no

Debug Information
no
Anything else?

No response

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No source file, test, or entry point is named. First reproduce the lag with the attached all_process.txt context, a tens-of-thousands-line XML file, and the function list view while scrolling. Done means identifying and fixing the sluggish scrolling behavior and verifying that browsing remains responsive on a large XML file.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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