firefox-main/servo/components/style/values/computed/basic_shape.rs (file symbol)

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
//! CSS handling for the computed value of
//! [`basic-shape`][basic-shape]s
//!
use crate::values::animated::{Animate, Procedure};
use crate::values::computed::angle::Angle;
use crate::values::computed::url::ComputedUrl;
use crate::values::computed::{Image, LengthPercentage, Position};
use crate::values::generics::basic_shape as generic;
use crate::values::generics::basic_shape::ShapePosition;
use crate::values::specified::svg_path::{CoordPair, PathCommand};
use crate::values::CSSFloat;
/// A computed alias for FillRule.
pub use crate::values::generics::basic_shape::FillRule;
/// A computed `clip-path` value.
pub type ClipPath = generic::GenericClipPath<BasicShape, ComputedUrl>;
/// A computed `shape-outside` value.
pub type ShapeOutside = generic::GenericShapeOutside<BasicShape, Image>;
/// A computed basic shape.
pub type BasicShape = generic::GenericBasicShape<Angle, Position, LengthPercentage, InsetRect>;
/// The computed value of `inset()`.
pub type InsetRect = generic::GenericInsetRect<LengthPercentage>;
/// A computed circle.
pub type Circle = generic::Circle<LengthPercentage>;
/// A computed ellipse.
pub type Ellipse = generic::Ellipse<LengthPercentage>;
/// The computed value of `ShapeRadius`.
pub type ShapeRadius = generic::GenericShapeRadius<LengthPercentage>;
/// The computed value of `shape()`.
pub type Shape = generic::Shape<Angle, Position, LengthPercentage>;
/// The computed value of `ShapeCommand`.
pub type ShapeCommand = generic::GenericShapeCommand<Angle, Position, LengthPercentage>;
/// The computed value of `PathOrShapeFunction`.
pub type PathOrShapeFunction =
generic::GenericPathOrShapeFunction<Angle, Position, LengthPercentage>;
/// The computed value of `CoordinatePair`.
pub type CoordinatePair = generic::CoordinatePair<LengthPercentage>;
/// The computed value of 'ControlPoint'.
pub type ControlPoint = generic::ControlPoint<Position, LengthPercentage>;
/// The computed value of 'RelativeControlPoint'.
pub type RelativeControlPoint = generic::RelativeControlPoint<LengthPercentage>;
/// The computed value of 'CommandEndPoint'.
pub type CommandEndPoint = generic::CommandEndPoint<Position, LengthPercentage>;
/// The computed value of hline and vline's endpoint.
pub type AxisEndPoint = generic::AxisEndPoint<LengthPercentage>;
/// Animate from `Shape` to `Path`, and vice versa.
macro_rules! animate_shape {
(
$from:ident,
$to:ident,
$procedure:ident,
$from_as_shape:tt,
$to_as_shape:tt
) => {{
// Check fill-rule.
if $from.fill != $to.fill {
return Err(());
}
// Check the list of commands. (This is a specialized lists::by_computed_value::animate().)
let from_cmds = $from.commands();
let to_cmds = $to.commands();
if from_cmds.len() != to_cmds.len() {
return Err(());
}
let commands = from_cmds
.iter()
.zip(to_cmds.iter())
.map(|(from_cmd, to_cmd)| {
$from_as_shape(from_cmd).animate(&$to_as_shape(to_cmd), $procedure)
})
.collect::<Result<Vec<ShapeCommand>, ()>>()?;
Ok(Shape {
fill: $from.fill,
commands: commands.into(),
})
}};
}
impl Animate for PathOrShapeFunction {
#[inline]
fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()> {
// Per spec, commands are "the same" if they use the same command keyword, and use the same
// <by-to> keyword. For curve and smooth, they also must have the same number of control
// points. Therefore, we don't have to do normalization here. (Note that we do
// normalization if we animate from path() to path(). See svg_path.rs for more details.)
//
match (self, other) {
(Self::Path(ref from), Self::Path(ref to)) => {
from.animate(to, procedure).map(Self::Path)
},
(Self::Shape(ref from), Self::Shape(ref to)) => {
from.animate(to, procedure).map(Self::Shape)
},
(Self::Shape(ref from), Self::Path(ref to)) => {
// Animate from shape() to path(). We convert each PathCommand into ShapeCommand,
// and return shape().
animate_shape!(
from,
to,
procedure,
(|shape_cmd| shape_cmd),
(|path_cmd| ShapeCommand::from(path_cmd))
)
.map(Self::Shape)
},
(Self::Path(ref from), Self::Shape(ref to)) => {
// Animate from path() to shape(). We convert each PathCommand into ShapeCommand,
// and return shape().
animate_shape!(
from,
to,
procedure,
(|path_cmd| ShapeCommand::from(path_cmd)),
(|shape_cmd| shape_cmd)
)
.map(Self::Shape)
},
}
}
}
impl From<&PathCommand> for ShapeCommand {
#[inline]
fn from(path: &PathCommand) -> Self {
match path {
&PathCommand::Close => Self::Close,
&PathCommand::Move { ref point } => Self::Move {
point: point.into(),
},
&PathCommand::Line { ref point } => Self::Move {
point: point.into(),
},
&PathCommand::HLine { ref x } => Self::HLine { x: x.into() },
&PathCommand::VLine { ref y } => Self::VLine { y: y.into() },
&PathCommand::CubicCurve {
ref point,
ref control1,
ref control2,
} => Self::CubicCurve {
point: point.into(),
control1: control1.into(),
control2: control2.into(),
},
&PathCommand::QuadCurve {
ref point,
ref control1,
} => Self::QuadCurve {
point: point.into(),
control1: control1.into(),
},
&PathCommand::SmoothCubic {
ref point,
ref control2,
} => Self::SmoothCubic {
point: point.into(),
control2: control2.into(),
},
&PathCommand::SmoothQuad { ref point } => Self::SmoothQuad {
point: point.into(),
},
&PathCommand::Arc {
ref point,
ref radii,
arc_sweep,
arc_size,
rotate,
} => Self::Arc {
point: point.into(),
radii: radii.into(),
arc_sweep,
arc_size,
rotate: Angle::from_degrees(rotate),
},
}
}
}
impl From<&CoordPair> for CoordinatePair {
#[inline]
fn from(p: &CoordPair) -> Self {
use crate::values::computed::CSSPixelLength;
Self::new(
LengthPercentage::new_length(CSSPixelLength::new(p.x)),
LengthPercentage::new_length(CSSPixelLength::new(p.y)),
)
}
}
impl From<&ShapePosition<CSSFloat>> for Position {
#[inline]
fn from(p: &ShapePosition<CSSFloat>) -> Self {
use crate::values::computed::CSSPixelLength;
Self::new(
LengthPercentage::new_length(CSSPixelLength::new(p.horizontal)),
LengthPercentage::new_length(CSSPixelLength::new(p.vertical)),
)
}
}
impl From<&generic::CommandEndPoint<ShapePosition<CSSFloat>, CSSFloat>> for CommandEndPoint {
#[inline]
fn from(p: &generic::CommandEndPoint<ShapePosition<CSSFloat>, CSSFloat>) -> Self {
match p {
generic::CommandEndPoint::ToPosition(pos) => Self::ToPosition(pos.into()),
generic::CommandEndPoint::ByCoordinate(coord) => Self::ByCoordinate(coord.into()),
}
}
}
impl From<&generic::AxisEndPoint<CSSFloat>> for AxisEndPoint {
#[inline]
fn from(p: &generic::AxisEndPoint<CSSFloat>) -> Self {
use crate::values::computed::CSSPixelLength;
use generic::AxisPosition;
match p {
generic::AxisEndPoint::ToPosition(AxisPosition::LengthPercent(lp)) => Self::ToPosition(
AxisPosition::LengthPercent(LengthPercentage::new_length(CSSPixelLength::new(*lp))),
),
generic::AxisEndPoint::ToPosition(AxisPosition::Keyword(_)) => {
unreachable!("Invalid state: SVG path commands cannot contain a keyword.")
},
generic::AxisEndPoint::ByCoordinate(pos) => {
Self::ByCoordinate(LengthPercentage::new_length(CSSPixelLength::new(*pos)))
},
}
}
}
impl From<&generic::ControlPoint<ShapePosition<CSSFloat>, CSSFloat>> for ControlPoint {
#[inline]
fn from(p: &generic::ControlPoint<ShapePosition<CSSFloat>, CSSFloat>) -> Self {
match p {
generic::ControlPoint::Absolute(pos) => Self::Absolute(pos.into()),
generic::ControlPoint::Relative(point) => Self::Relative(RelativeControlPoint {
coord: CoordinatePair::from(&point.coord),
reference: point.reference,
}),
}
}
}
impl From<&generic::ArcRadii<CSSFloat>> for generic::ArcRadii<LengthPercentage> {
#[inline]
fn from(p: &generic::ArcRadii<CSSFloat>) -> Self {
use crate::values::computed::CSSPixelLength;
Self {
rx: LengthPercentage::new_length(CSSPixelLength::new(p.rx)),
ry: p
.ry
.map(|v| LengthPercentage::new_length(CSSPixelLength::new(v))),
}
}
}