ChartsOrg/Charts

Chart x offset changes when finished zooming in

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#1,880 opened on 2016年11月24日

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説明

I'm seeing a weird behavior when I zoom in my charts.

After I end zooming (which means releasing both fingers) the xAxis offset changes as it moves like 20 chart points to the right of where the zoom ended.

The chart is inside another scrollview, but has only vertical scroll. Also this only happens when the zoom level is really close.. not sure exactly when. My code is pretty much the same as the demo.. only a few changes here and there.

Here's a video with the behaviour I'm seeing https://youtu.be/6ZIJmTyuie4 Any idea on why this is happening or how can I fix it?

コントリビューターガイド

技術スタック
swift
領域
mobile
Issue 種別
bug
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
1-3 hours
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
mostly clear
前提条件
Basic understanding of iOS developmentFamiliarity with Charts library
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
25
調査方針
Investigate the zoom mechanism in the Charts library. Look at the source files related to chart scaling and translation, such as ChartViewBase.swift or ChartRenderer.swift. The issue likely involves a calculation error when zooming ends. Check if there are any related PRs or comments that discuss similar behavior. Replicate the issue using the demo code with a scrollview to understand the exact conditions.
Chart x offset changes when finished zooming in · ChartsOrg/Charts#1880 | Good First Issue