There is nothing theme-specific about displaying images and icons,
so move the types from the material package to the generic widget
package.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
First, replace LayoutOptions with an explicit maximum width parameter. The
single-field option struct doesn't carry its weight, and I don't think we'll
see more global layout options in the future. Rather, I expect options to cover
spans of text or be part of a Font.
Second, replace the unit.Converter with an scaled text size. It's simpler and
allow the Editor and similar widgets to easily detect whether their cached
layouts are stale. Package text no longer depends on package unit, which is
now dealt with at the widget-level only.
Finally, remove the Size field from Font. It was a design mistake: a Font is
assumed to cover all sizes, as evidenced by the FontRegistry disregarding
Size when looking up fonts.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
It's one less type (Align) and shorter:
Before:
layout.Align(layout.Center).Layout(...)
After
layout.Center.Layout(...)
It is also safer: since `layout.Align(...)` was a casting operation,
the Go compiler would not complain about an incompatible constant.
For example, the widget/material package contained a wrong cast:
layout.Align(layout.Start)
which should have been
layout.Align(layout.W)
After this change, attempting `layout.Start.Layout(...)` result
in a compile error.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
With the simplification of MacroOp, it is now possible to simplify
the Flex API to just a single Layout method, similar to List:
layout.Flex{}.Layout(gtx,
layout.Rigid(func() { ... }),
layout.Flexed(0.5, func() { ... }),
)
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Elias Naur