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style: Expose scrollbar-inline-size as a chrome-only environment variable

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After the previous patches this is rather straight-forward.

Reviewed in: https://phabricator.services.mozilla.com/D168148
This commit is contained in:
Emilio Cobos Álvarez 2023-02-17 21:15:06 +00:00 • committed by Martin Robinson
parent 89e01f1df6
commit 1a3b32a248
2 changed files with 21 additions and 1 deletions
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10
components/style/custom_properties.rs
View file

@ -85,6 +85,10 @@ fn get_content_preferred_color_scheme(_device: &Device) -> VariableValue {
VariableValue::ident("light")
}
fn get_scrollbar_inline_size(device: &Device) -> VariableValue {
VariableValue::pixels(device.scrollbar_inline_size().px())
}
static ENVIRONMENT_VARIABLES: [EnvironmentVariable; 4] = [
make_variable!(atom!("safe-area-inset-top"), get_safearea_inset_top),
make_variable!(atom!("safe-area-inset-bottom"), get_safearea_inset_bottom),
@ -120,7 +124,7 @@ macro_rules! lnf_int_variable {
}};
}
static CHROME_ENVIRONMENT_VARIABLES: [EnvironmentVariable; 6] = [
static CHROME_ENVIRONMENT_VARIABLES: [EnvironmentVariable; 7] = [
lnf_int_variable!(
atom!("-moz-gtk-csd-titlebar-radius"),
TitlebarRadius,
@ -146,6 +150,10 @@ static CHROME_ENVIRONMENT_VARIABLES: [EnvironmentVariable; 6] = [
atom!("-moz-content-preferred-color-scheme"),
get_content_preferred_color_scheme
),
make_variable!(
atom!("scrollbar-inline-size"),
get_scrollbar_inline_size
),
];
impl CssEnvironment {

12
components/style/gecko/media_queries.rs
View file

@ -199,6 +199,18 @@ impl Device {
unsafe { bindings::Gecko_GetBaseSize(self.document(), language.as_ptr(), generic) }
}
/// Gets the size of the scrollbar in CSS pixels.
pub fn scrollbar_inline_size(&self) -> Length {
let pc = match self.pres_context() {
Some(pc) => pc,
// XXX: we could have a more reasonable default perhaps.
None => return Length::new(0.0),
};
Length::new(unsafe {
bindings::Gecko_GetScrollbarInlineSize(pc)
})
}
/// Queries font metrics
pub fn query_font_metrics(
&self,