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style: Plumb android text scale via nsLookAndFeel

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That's how we do it for all other platforms. Do this rather than via a
custom mostly-untested pref, which allows us to simplify text zoom
handling.

Differential Revision: https://phabricator.services.mozilla.com/D177062
This commit is contained in:
Emilio Cobos Álvarez 2023-05-11 19:01:19 +00:00 • committed by Martin Robinson
parent c2a2113136
commit 3f03650c88
1 changed files with 4 additions and 4 deletions
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8
components/style/gecko/media_queries.rs
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@ -511,24 +511,24 @@ impl Device {
/// Returns the current effective text zoom.
#[inline]
fn effective_text_zoom(&self) -> f32 {
fn text_zoom(&self) -> f32 {
let pc = match self.pres_context() {
Some(pc) => pc,
None => return 1.,
};
pc.mEffectiveTextZoom
pc.mTextZoom
}
/// Applies text zoom to a font-size or line-height value (see nsStyleFont::ZoomText).
#[inline]
pub fn zoom_text(&self, size: Length) -> Length {
size.scale_by(self.effective_text_zoom())
size.scale_by(self.text_zoom())
}
/// Un-apply text zoom.
#[inline]
pub fn unzoom_text(&self, size: Length) -> Length {
size.scale_by(1. / self.effective_text_zoom())
size.scale_by(1. / self.text_zoom())
}
/// Returns safe area insets