Multi font support

A new pair of behaviors (FontOverrideSupport and FontOverride) will be introduced.

FontOverrideSupport will be implemented in Layerable, Terminal and Screen while FontOverriede will be implemented in Component, Layer and Terminal.

FontOverrideSupport is an internal interface which is responsible for knowing what Font Size can be used in them (this comes from the TerminalBuilder which a Terminal is built from and can’t be changed later).

FontOverride holds a reference to a Font object which will be used when drawing. If you try to add / draw / etc an object which implements FontOverride to an object which implements FontOverrideSupport, the Font’s size will be checked against the information in the object implementing FontOverrideSupport. If the Size does not fit the object will throw an exception.

The current rule is that there can be one font Size for each Terminal object and every other object must use Fonts with that size.

As a later feature half-width fonts will be also supported (eg. 16x16 + 8x16).

[coldwarrl]

as a reminder: Multi-Size will be not supported, yet but later the ‘cogmind’ approach (use of fonts with half-width) shall be supported later so that for instance a smaller font for log-views etc. can be realized

[adam-arold]

You can check SNAPSHOT releases using Jitpack It is pretty easy to set up. I’ve just created a test SNAPSHOT release (2017.3.2-SNAPSHOT) which has the current version of Zircon with the partially implemented multi-font support