Validate Layouting and Custom Values / Hints with HiDPI Settings

[HeikoKlare]

In SWT, custom values for prescribing or giving hints for sizes can be defined at multiple places. Examples are layouts (margins etc.) or widgets sizes (minimum/maximum etc.).

It shall be validated how these values are handled so far w.r.t. HiDPI situations (device zoom != 100) and whether that behavior is correct for the existing HiDPI support and for the once we add. In particular, the behavior should be consistent (i.e., either the value receiver or the value provider should always be responsible).