Layout specs about xwt

[slluis]

The MonoMac layout engine is actually quite complete. The GTK layout engine looks more complex, but the functionality they support is basically the same.

The widget layout model defined by XWT more complex than the layout model defined by GTK 2.0. It is actually the model defined by GTK 3.0. There are some features which are not supported natively by GTK 2.0, such as height-for-width widget sizing, and natural sizes. The GTK backend looks more complex because it is trying to support those features using the more limited GTK 2.0 layout model. That's the case of SizeCheckStep, which is just a trick to support height-for-width.

For WPF and MonoMac it is more simple because with those toolkits, widget layout can be fully driven by XWT. So all you have to do is place the widgets where XWT tells you to place them, and that's all.

[carlosalberto]

Amazing, thanks for clarifying!. Gonna implement the backend then.