From: Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Date: Thu, 26 Sep 2019 20:24:12 +0000 (+0300)
Subject: Two rendering glitch fixes for time series charts
X-Git-Tag: v1.43.0~136^2~62
X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=commitdiff_plain;h=78d831a19c254d829e45d04c5ec6a3057680b7d7;hp=78d831a19c254d829e45d04c5ec6a3057680b7d7;p=simantics%2Fplatform.git

Two rendering glitch fixes for time series charts

1. Grid values were not rendered properly when the [yMin,yMax] interval
   gets too small (under 1e-6). The calculations in
   GridSpacing.makeGridSpacing contain a capping logic for parameter
   viewboxSize which doesn't necessarily have to be there (IMHO). The
   problem is essentially that auto-scaling the Y-axis allows zooming to
   any small value interval, but the vertical ruler rendering just
   doesn't work properly in those cases.

2. GridUtil.calcLabelWidth calculated the rendered Y-value labels
   differently from the rendering logic in GridUtil.paintVerticalRuler
   and GridUtil.paintVerticalSlaveRuler, i.e. in a more inprecise manner
   which results in the y-axis reserved width not following properly
   what is rendered.

gitlab #392

Change-Id: I30998d9336e50606956a78ad547ee437e0439f1a
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