From: Evert Timberg <evert.timberg+github@gmail.com>
Date: Sat, 27 Mar 2021 19:00:21 +0000 (-0400)
Subject: Improved alignment of pixels in scales at low widths (#8739)
X-Git-Tag: v3.0.0-rc.6~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0b21578a3ada5cc36739cab8af5335bb9be175cf;p=thirdparty%2FChart.js.git

Improved alignment of pixels in scales at low widths (#8739)

* Improved alignment of pixels in scales at low widths
* Undo scale changes
---

diff --git a/src/helpers/helpers.canvas.js b/src/helpers/helpers.canvas.js
index 0472bddb3..8282b3a94 100644
--- a/src/helpers/helpers.canvas.js
+++ b/src/helpers/helpers.canvas.js
@@ -102,7 +102,7 @@ export function _longestText(ctx, font, arrayOfThings, cache) {
  */
 export function _alignPixel(chart, pixel, width) {
   const devicePixelRatio = chart.currentDevicePixelRatio;
-  const halfWidth = width / 2;
+  const halfWidth = width !== 0 ? Math.max(width / 2, 0.5) : 0;
   return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
 }