From: Florian Müllner <fmuellner@gnome.org>
Date: Mon, 1 Feb 2021 15:28:49 +0000 (+0100)
Subject: workspaceThumbnails: Center thumbnails in workspace navigator
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~616^2^2~514
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=de299f0a9069072d4c69d0fa2975e3c3a928068c;p=gnome-shell.git

workspaceThumbnails: Center thumbnails in workspace navigator

We always request a natural width based on the maximum thumbnail scale,
but may very well use a smaller scale when allocating. This currently
results in thumbnails being off center, fix this by distributing any
extra space evenly before allocating thumbnails.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1620>
---

diff --git a/js/ui/workspaceThumbnail.js b/js/ui/workspaceThumbnail.js
index 73f25593b..46de36fa4 100644
--- a/js/ui/workspaceThumbnail.js
+++ b/js/ui/workspaceThumbnail.js
@@ -1302,6 +1302,13 @@ var ThumbnailsBox = GObject.registerClass({
         const thumbnailWidth = Math.round(thumbnailHeight * ratio);
         const roundedVScale = thumbnailHeight / portholeHeight;
 
+        // We always request size for MAX_THUMBNAIL_SCALE, distribute
+        // space evently if we use smaller thumbnails
+        const extraWidth =
+            (MAX_THUMBNAIL_SCALE * portholeWidth - thumbnailWidth) * nWorkspaces;
+        box.x1 += Math.round(extraWidth / 2);
+        box.x2 -= Math.round(extraWidth / 2);
+
         let indicatorValue = this._scrollAdjustment.value;
         let indicatorUpperWs = Math.ceil(indicatorValue);
         let indicatorLowerWs = Math.floor(indicatorValue);