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Home » Eclipse Projects » Remote Application Platform (RAP) » Problem with Canvas and JFreeChart 1.0.13
Problem with Canvas and JFreeChart 1.0.13 [message #1806623] Sun, 12 May 2019 10:21 Go to next message
Jean-Pascal Laux is currently offline Jean-Pascal LauxFriend
Messages: 82
Registered: December 2011
Member
I migrate my RCP application to RAP.
My application uses a lot of JFreeChart graphs and I add some problems :

- Dotted lines are drawn as solid lines
- Graphs seem to be zoomed and owerflow the view (the picture seems blurry)
- Some fonts seem to be changed by anothers

I have attached capture screens for the second point.
  • Attachment: firefox.png
    (Size: 50.61KB, Downloaded 230 times)
  • Attachment: chrome.png
    (Size: 52.09KB, Downloaded 228 times)
  • Attachment: ie.png
    (Size: 50.75KB, Downloaded 226 times)
  • Attachment: rcp.png
    (Size: 28.68KB, Downloaded 205 times)
Re: Problem with Canvas and JFreeChart 1.0.13 [message #1806738 is a reply to message #1806623] Tue, 14 May 2019 13:59 Go to previous messageGo to next message
Eclipse UserFriend
You generate chart as image through JFreeChart. RAP does not deal with JFreeChart, only get ready images.
try use for your java app
System.setProperty("java.awt.headless", "true");
Re: Problem with Canvas and JFreeChart 1.0.13 [message #1806743 is a reply to message #1806738] Tue, 14 May 2019 15:18 Go to previous messageGo to next message
Jean-Pascal Laux is currently offline Jean-Pascal LauxFriend
Messages: 82
Registered: December 2011
Member
Thanks but setting this property does not work.

I don't generate image. I am able to interact with the chart (zoom, save, hide/unhide graph)
It is like if the destination canvas is larger than the canvas itself.
Re: Problem with Canvas and JFreeChart 1.0.13 [message #1806760 is a reply to message #1806743] Tue, 14 May 2019 19:44 Go to previous messageGo to next message
Eclipse UserFriend
>I am able to interact with the chart (zoom, save, hide/unhide graph)
But how?
This is AWT library and use for web java script is impossible. only for native java app
Re: Problem with Canvas and JFreeChart 1.0.13 [message #1806814 is a reply to message #1806760] Wed, 15 May 2019 15:04 Go to previous messageGo to next message
Jean-Pascal Laux is currently offline Jean-Pascal LauxFriend
Messages: 82
Registered: December 2011
Member
I think you are right.
Only mouse events are captured and the image is updated.

It seems that BasicStroke does not work.
Re: Problem with Canvas and JFreeChart 1.0.13 [message #1806826 is a reply to message #1806814] Wed, 15 May 2019 17:58 Go to previous messageGo to next message
Eclipse UserFriend
I use https://git.eclipse.org/c/rap/incubator/org.eclipse.rap.incubator.chart.git
Re: Problem with Canvas and JFreeChart 1.0.13 [message #1806828 is a reply to message #1806826] Wed, 15 May 2019 20:16 Go to previous message
Jean-Pascal Laux is currently offline Jean-Pascal LauxFriend
Messages: 82
Registered: December 2011
Member
My source code is used for generate RCP and RAP applucation.
I have refactoring it to solve most of the issues i have.
For chart, the last issue is BasicStroke.
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