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https://github.com/servo/servo.git
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7b4fb5dc22
Make the computed value of border-like properties app units (which is effectively what happens in Gecko already), and clamp at computed value time. Differential Revision: https://phabricator.services.mozilla.com/D179481
72 lines
2.7 KiB
Rust
72 lines
2.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#![allow(unsafe_code)]
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//! Different kind of helpers to interact with Gecko values.
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use crate::color::{AbsoluteColor, ColorSpace};
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use crate::counter_style::{Symbol, Symbols};
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use crate::gecko_bindings::bindings;
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use crate::gecko_bindings::structs::CounterStylePtr;
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use crate::values::generics::CounterStyle;
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use crate::values::Either;
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use crate::Atom;
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/// Convert a color value to `nscolor`.
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pub fn convert_absolute_color_to_nscolor(color: &AbsoluteColor) -> u32 {
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let srgb = color.to_color_space(ColorSpace::Srgb);
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u32::from_le_bytes([
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(srgb.components.0 * 255.0).round() as u8,
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(srgb.components.1 * 255.0).round() as u8,
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(srgb.components.2 * 255.0).round() as u8,
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(srgb.alpha * 255.0).round() as u8,
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])
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}
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/// Convert a given `nscolor` to a Servo AbsoluteColor value.
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pub fn convert_nscolor_to_absolute_color(color: u32) -> AbsoluteColor {
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let [r, g, b, a] = color.to_le_bytes();
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AbsoluteColor::srgb(
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r as f32 / 255.0,
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g as f32 / 255.0,
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b as f32 / 255.0,
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a as f32 / 255.0,
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)
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}
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impl CounterStyle {
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/// Convert this counter style to a Gecko CounterStylePtr.
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#[inline]
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pub fn to_gecko_value(&self, gecko_value: &mut CounterStylePtr) {
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unsafe { bindings::Gecko_CounterStyle_ToPtr(self, gecko_value) }
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}
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/// Convert Gecko CounterStylePtr to CounterStyle or String.
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pub fn from_gecko_value(gecko_value: &CounterStylePtr) -> Either<Self, String> {
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use crate::values::CustomIdent;
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let name = unsafe { bindings::Gecko_CounterStyle_GetName(gecko_value) };
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if !name.is_null() {
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let name = unsafe { Atom::from_raw(name) };
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debug_assert_ne!(name, atom!("none"));
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Either::First(CounterStyle::Name(CustomIdent(name)))
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} else {
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let anonymous =
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unsafe { bindings::Gecko_CounterStyle_GetAnonymous(gecko_value).as_ref() }.unwrap();
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let symbols = &anonymous.mSymbols;
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if anonymous.mSingleString {
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debug_assert_eq!(symbols.len(), 1);
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Either::Second(symbols[0].to_string())
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} else {
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let symbol_type = anonymous.mSymbolsType;
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let symbols = symbols
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.iter()
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.map(|gecko_symbol| Symbol::String(gecko_symbol.to_string().into()))
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.collect();
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Either::First(CounterStyle::Symbols(symbol_type, Symbols(symbols)))
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}
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}
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}
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}
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