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style: Remove nsStyleCoord.

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And move the useful bits of it somewhere else (ServoStyleConstInlines.h for the
inline function definitions, and nsFrame.cpp for the static assertions).

Differential Revision: https://phabricator.services.mozilla.com/D36120
This commit is contained in:
Emilio Cobos Álvarez 2019-06-28 09:46:26 +00:00
parent 8d127014c3
commit 31b166fb1b
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4 changed files with 5 additions and 584 deletions
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156
components/style/gecko/values.rs
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@ -7,165 +7,15 @@
//! Different kind of helpers to interact with Gecko values.
use crate::counter_style::{Symbol, Symbols};
use crate::gecko_bindings::structs::{nsStyleCoord, CounterStylePtr};
use crate::gecko_bindings::sugar::ns_style_coord::{CoordData, CoordDataMut, CoordDataValue};
use crate::values::computed::{Length, LengthPercentage};
use crate::values::computed::{Number, NumberOrPercentage, Percentage};
use crate::values::generics::length::LengthPercentageOrAuto;
use crate::values::generics::{CounterStyleOrNone, NonNegative};
use crate::gecko_bindings::structs::CounterStylePtr;
use crate::values::generics::CounterStyleOrNone;
use crate::values::Either;
use crate::{Atom, Zero};
use crate::Atom;
use app_units::Au;
use cssparser::RGBA;
use nsstring::{nsACString, nsCStr};
use std::cmp::max;
/// A trait that defines an interface to convert from and to `nsStyleCoord`s.
///
/// TODO(emilio): Almost everything that is in this file should be somehow
/// switched to cbindgen.
pub trait GeckoStyleCoordConvertible: Sized {
/// Convert this to a `nsStyleCoord`.
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T);
/// Given a `nsStyleCoord`, try to get a value of this type..
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self>;
}
impl nsStyleCoord {
#[inline]
/// Set this `nsStyleCoord` value to `val`.
pub fn set<T: GeckoStyleCoordConvertible>(&mut self, val: T) {
val.to_gecko_style_coord(self);
}
}
impl<Inner> GeckoStyleCoordConvertible for NonNegative<Inner>
where
Inner: GeckoStyleCoordConvertible,
{
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
self.0.to_gecko_style_coord(coord)
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
Some(NonNegative(Inner::from_gecko_style_coord(coord)?))
}
}
impl GeckoStyleCoordConvertible for Number {
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
coord.set_value(CoordDataValue::Factor(*self));
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
match coord.as_value() {
CoordDataValue::Factor(f) => Some(f),
_ => None,
}
}
}
impl GeckoStyleCoordConvertible for Percentage {
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
coord.set_value(CoordDataValue::Percent(self.0));
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
match coord.as_value() {
CoordDataValue::Percent(p) => Some(Percentage(p)),
_ => None,
}
}
}
impl GeckoStyleCoordConvertible for NumberOrPercentage {
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
match *self {
NumberOrPercentage::Number(ref n) => n.to_gecko_style_coord(coord),
NumberOrPercentage::Percentage(ref p) => p.to_gecko_style_coord(coord),
}
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
match coord.as_value() {
CoordDataValue::Factor(f) => Some(NumberOrPercentage::Number(f)),
CoordDataValue::Percent(p) => Some(NumberOrPercentage::Percentage(Percentage(p))),
_ => None,
}
}
}
impl GeckoStyleCoordConvertible for LengthPercentage {
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
if self.was_calc {
return coord.set_value(CoordDataValue::Calc((*self).into()));
}
debug_assert!(!self.has_percentage || self.unclamped_length() == Length::zero());
if self.has_percentage {
return coord.set_value(CoordDataValue::Percent(self.percentage()));
}
coord.set_value(CoordDataValue::Coord(self.unclamped_length().to_i32_au()))
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
match coord.as_value() {
CoordDataValue::Coord(coord) => Some(LengthPercentage::new(Au(coord).into(), None)),
CoordDataValue::Percent(p) => {
Some(LengthPercentage::new(Au(0).into(), Some(Percentage(p))))
},
CoordDataValue::Calc(calc) => Some(calc.into()),
_ => None,
}
}
}
impl GeckoStyleCoordConvertible for Length {
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
coord.set_value(CoordDataValue::Coord(self.to_i32_au()));
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
match coord.as_value() {
CoordDataValue::Coord(coord) => Some(Au(coord).into()),
_ => None,
}
}
}
impl<LengthPercentage> GeckoStyleCoordConvertible for LengthPercentageOrAuto<LengthPercentage>
where
LengthPercentage: GeckoStyleCoordConvertible,
{
fn to_gecko_style_coord<T: CoordDataMut>(&self, coord: &mut T) {
match *self {
LengthPercentageOrAuto::Auto => coord.set_value(CoordDataValue::Auto),
LengthPercentageOrAuto::LengthPercentage(ref lp) => lp.to_gecko_style_coord(coord),
}
}
fn from_gecko_style_coord<T: CoordData>(coord: &T) -> Option<Self> {
match coord.as_value() {
CoordDataValue::Auto => Some(LengthPercentageOrAuto::Auto),
_ => LengthPercentage::from_gecko_style_coord(coord)
.map(LengthPercentageOrAuto::LengthPercentage),
}
}
}
impl<T: GeckoStyleCoordConvertible> GeckoStyleCoordConvertible for Option<T> {
fn to_gecko_style_coord<U: CoordDataMut>(&self, coord: &mut U) {
if let Some(ref me) = *self {
me.to_gecko_style_coord(coord);
} else {
coord.set_value(CoordDataValue::None);
}
}
fn from_gecko_style_coord<U: CoordData>(coord: &U) -> Option<Self> {
Some(T::from_gecko_style_coord(coord))
}
}
/// Convert a given RGBA value to `nscolor`.
pub fn convert_rgba_to_nscolor(rgba: &RGBA) -> u32 {
((rgba.alpha as u32) << 24) |