This commit adds a font collection that uses the new
text shaper so that constructing material.Themes atop
it is equally simple to using the old shaper.
You can use material.NewTheme(gofont.CollectionHB()) with
this commit applied.
References: https://todo.sr.ht/~eliasnaur/gio/146
Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
A slice of FontFace pairs are simpler, and thread safe in case a client
wants to append or modify the font collection.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Before this change, package font implemented a global font registry,
with the usual problems of package global state.
This change deletes the global registry and introduces the text.Collection
type for representing a list of fonts and their faces. Collection exports
Lookup that finds the closest match and its face.
The existing FontRegistry is renamed to Cache to reflect its new limited
functionality: a cache of shapes and measurements on top of a Collection.
Then, material.NewTheme is changed to take a Collection and initialize
a Cache.
Updates gio#19 because multiple windows require a separate (writable) Cache per
window, while (read-only) Collections may be shared.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Registering the font as a side effect of importing the gofont package
was too magic. Require an explicit Register call instead. As a side
effect, it is more clear which font is the default (the first one
registered).
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Chris Waldon