gfx: Add elliptical border radius support

This commit is contained in:
Bryan Bell 2015-08-31 19:59:02 -07:00
parent 7474b29510
commit 3e5fb49b6f
9 changed files with 603 additions and 305 deletions

View file

@ -530,6 +530,46 @@ pub mod specified {
}
}
#[derive(Clone, PartialEq, Copy, Debug, HeapSizeOf)]
pub struct BorderRadiusSize(pub Size2D<LengthOrPercentage>);
impl BorderRadiusSize {
pub fn zero() -> BorderRadiusSize {
let zero = LengthOrPercentage::Length(Length::Absolute(Au(0)));
BorderRadiusSize(Size2D::new(zero, zero))
}
}
impl ToCss for BorderRadiusSize {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
let BorderRadiusSize(size) = *self;
try!(size.width.to_css(dest));
try!(dest.write_str(" "));
size.height.to_css(dest)
}
}
impl BorderRadiusSize {
pub fn circle(radius: LengthOrPercentage) -> BorderRadiusSize {
BorderRadiusSize(Size2D::new(radius, radius))
}
pub fn parse_one_radii(input: &mut Parser) -> Result<BorderRadiusSize, ()> {
if let Ok(first) = LengthOrPercentage::parse_non_negative(input) {
Ok(BorderRadiusSize(Size2D::new(first, first)))
} else {
Err(())
}
}
#[allow(dead_code)]
#[inline]
pub fn parse(input: &mut Parser) -> Result<BorderRadiusSize, ()> {
let first = try!(LengthOrPercentage::parse_non_negative(input));
let second = input.try(LengthOrPercentage::parse_non_negative).unwrap_or(first);
Ok(BorderRadiusSize(Size2D::new(first, second)))
}
}
// http://dev.w3.org/csswg/css2/colors.html#propdef-background-position
#[derive(Clone, PartialEq, Copy)]
pub enum PositionComponent {
@ -787,6 +827,22 @@ pub mod specified {
}
}
pub fn parse_border_radius(input: &mut Parser) -> Result<BorderRadiusSize, ()> {
input.try(BorderRadiusSize::parse).or_else(|()| {
match_ignore_ascii_case! { try!(input.expect_ident()),
"thin" =>
Ok(BorderRadiusSize::circle(
LengthOrPercentage::Length(Length::from_px(1.)))),
"medium" =>
Ok(BorderRadiusSize::circle(
LengthOrPercentage::Length(Length::from_px(3.)))),
"thick" =>
Ok(BorderRadiusSize::circle(
LengthOrPercentage::Length(Length::from_px(5.))))
_ => Err(())
}
})
}
pub fn parse_border_width(input: &mut Parser) -> Result<Length, ()> {
input.try(Length::parse_non_negative).or_else(|()| {
@ -943,6 +999,36 @@ pub mod computed {
}
}
#[derive(PartialEq, Clone, Copy, HeapSizeOf)]
pub struct BorderRadiusSize(pub Size2D<LengthOrPercentage>);
impl BorderRadiusSize {
pub fn zero() -> BorderRadiusSize {
BorderRadiusSize(Size2D::new(LengthOrPercentage::Length(Au(0)), LengthOrPercentage::Length(Au(0))))
}
}
impl ToComputedValue for specified::BorderRadiusSize {
type ComputedValue = BorderRadiusSize;
#[inline]
fn to_computed_value(&self, context: &Context) -> BorderRadiusSize {
let specified::BorderRadiusSize(s) = *self;
let w = s.width.to_computed_value(context);
let h = s.height.to_computed_value(context);
BorderRadiusSize(Size2D::new(w, h))
}
}
impl ::cssparser::ToCss for BorderRadiusSize {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
let BorderRadiusSize(s) = *self;
try!(s.width.to_css(dest));
try!(dest.write_str("/"));
s.height.to_css(dest)
}
}
#[derive(PartialEq, Clone, Copy, HeapSizeOf)]
pub enum LengthOrPercentage {
Length(Au),