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5 Commits

Author SHA1 Message Date
Elias Naur b331407e81 text: add io.Reader Layout method to Shaper 
use them for Editor, which is no longer required to construct a string
for laying out its content.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-01-13 21:38:54 +01:00
Elias Naur 16d2a3ac0a text: remove String, Layout and add Glyph 
In preparation for using Shaper with an io.Reader, rework the API to not refer
to strings. In particular, introduce Glyph for holding the rune in addition to
the advance. For fast traversing of the underlying text, add Len to Line with
the UTF8 length.

Layout is a useless wrapper around []Line; remove it while we're
here.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-01-13 19:54:11 +01:00
Elias Naur e25b1639b9 text: make Shaper an interface 
And rename out the caching implementation to FontRegistry.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-01-13 14:48:31 +01:00
Elias Naur e2d0b3cfca layout: invert baseline to measure positive distance from bottom 
With an inverted baseline, the zero value results in the widget
baseline aligned to its bottom.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2019-10-16 00:49:52 +02:00
Elias Naur ff3fc7a24a widget,text: move Label and Editor from text to widget package 
Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2019-10-12 14:04:34 +02:00