How to set default width when adding a panel?

[qcz]

Hi!

First, thanks for this fantastic library!

I have a tab as a main view and have some tabs on the right of it:

|main tab|______________________|_R1_|_R2_|
|                               |         |
|                               |         |

Essentially I want to create a three column layout, and I want to add a new tab to the left, with a predetermined width (eg. 400px). As far I can see, I can't do this directly, so I have to use the setSize method of the panel API.

However the problem is that the setSize runs after dockview inserts the panel on the left with a huge width (half of the width of the main component), and when I resize the component on the left to have the desired width, the components on the right will get all the width gained by resizing the component on the left instead giving it to the main component, like when I resize using the mouse:

|_L1_____|main tab|______|_R1__|_R2______________|
|        |               |                       |
|        |               |                       |

I've tried to add the panel to the left first, but it does not work either. In this case the left tab will be huge.