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Bug #7800

open

WCartesianChart renders barseries over axis

Added by Ulf Johnsson almost 3 years ago. Updated almost 3 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Target version:
-
Start date:
10/28/2020
Due date:
% Done:

0%

Estimated time:

Description

Hi!

There seems to be some kind of bleeding when redering a bar series in combination with paning the chart.
This seems to occur both in the "right" and "bottom" axis.

Wt4.4, see image:

Files

bleeding_charts.png (16.9 KB) bleeding_charts.png Ulf Johnsson, 10/28/2020 10:54 AM
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 #1

Updated by Ulf Johnsson almost 3 years ago

This does not seem to be an issue in FireFox, but it is an issue in Chrome.

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 #2

Updated by Bruce Toll almost 3 years ago

I believe that this issue may be due to a chromium bug that is fixed in newer releases.

I was able to reproduce the issue with a chromium browser running 86.0.4240.111 on Linux accessing a local build of the Wt 4.5.0-rc1 charts example (interactive Category Chart). I could also reproduce the issue with the current https://www.webtoolkit.eu/wt/examples/charts/charts.wt.

As a note, this version of chromium displays the Category Chart example correctly with hardware acceleration disabled.

I verified that the charts example now displays correctly on Windows 10 using recently updated browsers: Chrome 87.0.4280.88, Edge 87.0.664.52, and FireFox 83.0.

I believe that the relevant issue report for chromium is here: https://bugs.chromium.org/p/chromium/issues/detail?id=1139452

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