uber/react-vis

LineSeriesCanvas in FlexibleXYPlot container renders in incorrect size on retina screens

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#1063 opened on Dec 12, 2018

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bughelp wanted

Description

Example: https://codepen.io/marton/pen/aPvody

This can be reproduced by putting any canvas series in a FlexibleXYPlot container as long as devicePixelRatio !== 1.

#605 seems related

Contributor guide

Tech stack
javascriptreact
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic knowledge of Reactunderstanding of canvas renderingfamiliarity with devicePixelRatio
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
The issue can be reproduced using the provided CodePen example (https://codepen.io/marton/pen/aPvody) where a LineSeriesCanvas inside a FlexibleXYPlot shows incorrect sizing on retina screens (devicePixelRatio !== 1). The related issue #605 (https://github.com/uber/react vis/issues/605) likely provides additional context. To fix, investigate the FlexibleXYPlot and LineSeriesCanvas components in the react vis source code, specifically how they handle device pixel ratio and container dimensions. The fix may involve adjusting the canvas size or scaling context based on devicePixelRatio.