View source for UI Autolayout


The cxsource framework provides automatic layout facilities, allowing user interface layouts&nbsp;to be built with runtime-evaluated rules rather than hardcoded values. This offers a number of immediate benefits:

*The underlying fonts and&nbsp;control appearances can be swapped out, leading to changes in the user interface layout requirements, without having to manually update every single UI. 
**This is especially useful when developing cross-platform interface layouts where the native appearance and even font rendering may require subtle changes to the layout.   
*Localised versions of the UI can reflow correctly without running out of space and without leaving ugly gaps. 
*A lot of manual coding, or manual calculations, can be skipped in favor of automated placement. 
*Layouts can adjust as windows are resized, including controlled collapse of elements when the window is too small to fit the full user interface. 
*Layouts can be hot-reloaded during development. 
*Window sizes and size limitations are calculated automatically, and can automatically adapt as the UI changes. 
*Layouts can be animated easily. 

There are also some downsides:

*Calculating the layout at runtime is slower than simply loading some predefined values. 
*Debugging problems in the user interface layout is sometimes more time-consuming. 

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