add legend style option : size, front, color

[soaubier]

Add style option for all plot type. With the implementation of :

• PROPERTY_FONT_LEGEND_SIZE
• PROPERTY_FONT_LEGEND_FAMILY
• PROPERTY_FONT_LEGEND_COLOR

Funded by INRAE - Reversaal

[Djedouas]

cc @nforquet

[ghtmtt]

many thanks for this contribution! From the screenshot it seemed that you created already existing properties and not that you added the legend customization!

Not sure what is happening but when opening the UI font, size and color widget are different from all the others. Can you please normalize it?

[ghtmtt]

could you continue the numeration? 30, 31, 32

[soaubier]

Hi @ghtmtt ,

Thank you for your review !
I’ve considered your feedback. Please let me know if I missed anything.

[ghtmtt]

@soaubier there are some conflicts, can you fix them? So I'll merge this PR! Thanks!

[soaubier]

Hi @ghtmtt ,

thanks for the quick reply!
I pushed some changes to fix the conflicts, which revealed an issue. I decided to remove the handling of axis color/size for the pie chart and the ternary chart because:

• the pie chart doesn’t have real x or y axes,

• the ternary chart has x, y, and z, but since I didn’t handle z, I also removed x and y for consistency.

They still keep support for title and legend.

[ghtmtt]

thanks @soaubier! LGTM, I'm going to merge the pull request and release a new version ASAP