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Changing Font type of NatTable header dynamically [message #1810189]

Fri, 02 August 2019 14:03

Sharmila Naik

Messages: 6
Registered: May 2019

Junior Member

Hi Dirk,

We are using NatTable to display table header and table data.
Our requirement is to change the font type of NATTable heder dynamically based on user's selection.

For instance, NATTable header for one of the columns is as "System\Sub-system\Component" . User clicks on some menu in the application and selects option as "System". Then the NatTable header for this column should show System (BOLD FONT)\Sub-system\Component. Likewise if user selects value as "Component" then the header should display only Component in bold for string : "System\Sub-system\Component.

So value of header should change dynamically depending upon user selection.

Will this be possible to achieve using RichTextCellPainter?

Thanks & Regards,
Sharmila

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Re: Changing Font type of NatTable header dynamically [message #1810191 is a reply to message #1810189]

Fri, 02 August 2019 15:41

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

If you want to show different fonts in one cell, then you either use the RichTextCellPainter or you create a custom painter that supports this.

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Re: Changing Font type of NatTable header dynamically [message #1810224 is a reply to message #1810191]

Mon, 05 August 2019 10:15

Sharmila Naik

Messages: 6
Registered: May 2019

Junior Member

Hi Dirk,
Thank you for your reply.

1) I tried with custom painter with graphics object to paint the string in required format. Example : system/sub-system/component.
But the string remains in this format for few seconds then comes back to its normal plain format. I could not figure out why is it reverting back to plain format.
2) I also tried using RichTextCellPainter. But for me it displayed the string with html tags. May be I am missing something in the implementation which I need to check.

Also, I want to ask few questions,
1) When we register the style to text , it is applied to the entire cell. How do we define that one style for specific text and other style for rest of the text within the same cell?
2) Also, in our case the text to be shown bold is not pre-defined. This is decided at runtime depending upon the user's selection. We define cell attributes using IConfigRegistry.
Can we re-configure the cell attributes at run time?

Please provide your valuable inputs.
Thanks,
Sharmila

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Re: Changing Font type of NatTable header dynamically [message #1810236 is a reply to message #1810224]

Mon, 05 August 2019 15:43

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

If you see html tags you probably haven't registered the RichTextCellPainter correctly.
Yes you can change configuration attributes at runtime.
And I would suggest to register a display converter that adds the html tags at runtime based on the user selection. We do the same in the single field search example.

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Re: Changing Font type of NatTable header dynamically [message #1810270 is a reply to message #1810236]

Tue, 06 August 2019 10:02

Sharmila Naik

Messages: 6
Registered: May 2019

Junior Member

Hi Dirk,
Thank you so much for your guidance.

It worked with custom painter and re-configuring attributes at run time.
Thanks again!

Regards,
Sharmila

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