Project

General

Profile

Actions
Copy link

Bug #724

closed

Shadow areas on CartesianChart with Chrome

Added by Christophe Delépine about 13 years ago. Updated almost 13 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Koen Deforche
Target version:
-
Start date:
02/15/2011
Due date:
% Done:

0%

Estimated time:

Description

Hi,

I have just tried my Wt application using Chrome.

I can see shadow areas on the cartesian charts. Their shape changes when i edit the curve by adding new points

It works fine with Firefox.

Is that a known bug with Chrome ?

Regards

Christophe

Files

Download all files
gui_chrome.jpg (280 KB) gui_chrome.jpg Christophe Delépine, 02/15/2011 04:53 PM
CurveEdit.cpp (7.78 KB) CurveEdit.cpp Christophe Delépine, 02/16/2011 02:12 PM
CurveEdit.h (1.36 KB) CurveEdit.h Christophe Delépine, 02/16/2011 02:12 PM
Actions
Copy link
 #1

Updated by Koen Deforche about 13 years ago

Hey Christophe,

No, that's new to me. Chrome always behaved well as far as my experience goes. Is the image rendered as an SVG or as canvas ?

And any idea what you are doing different than the charts example, which does not show this artefact for me ?

Regards,

koen

Actions
Copy link Download all files
 #2

Updated by Christophe Delépine about 13 years ago

Koen,

Here is the source code for my curve editor. The main setup is in the class constructor.

I don't have the feeling i do anything special

I have 2 series : one is drawn with green line segments + yellow markers. The second series is empty and only contains data when the user selects a marker.

Regards

Christophe

Actions
Copy link
 #3

Updated by Christophe Delépine about 13 years ago

The problem comes from the following line :

    s.setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 2));

If i remove this line, then the shadow areas disappear. Looks like the shadow is not well managed on Chrome

Actions
Copy link
 #4

Updated by Koen Deforche almost 13 years ago

  • Status changed from New to Feedback
  • Assignee set to Koen Deforche

Hey Christophe,

I could reproduce this. Apparently it happens when SVG is used, and the bug is known and open in Chromium:

http://code.google.com/p/chromium/issues/detail?id=71773

I suggest that you use HTML5 Canvas for rendering the chart?

Regards,

koen

Actions
Copy link
 #5

Updated by Christophe Delépine almost 13 years ago

Hi Koen,

You can close bug#724 since the problem is within Chrome.

FYI, i have tried setPreferredMethod(HtmlCanvas) for my chart but the bug still occurs. This is with the latest Chrome.

I have desactivated shadows for the moment.

Regards

Christophe

Actions
Copy link
 #6

Updated by Koen Deforche almost 13 years ago

  • Status changed from Feedback to Closed
Actions
Copy link

Also available in: Atom PDF