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gfx: Add elliptical border-radius shorthand parsing

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Adds elliptical border-radius shorthand parsing, e.g.:

    /* The syntax of the second radius allows one to four values */
    /* (first radius values) / radius */
    border-radius: 10px 5% / 20px;

    /* (first radius values) / top-left-and-bottom-right | top-right-and-bottom-left */
    border-radius: 10px 5% / 20px 30px;

    /* (first radius values) / top-left | top-right-and-bottom-left | bottom-right */
    border-radius: 10px 5px 2em / 20px 25px 30%;

    /* (first radius values) / top-left | top-right | bottom-right | bottom-left */
    border-radius: 10px 5% / 20px 25em 30px 35em;
This commit is contained in:
Bryan Bell 2015-09-15 13:27:30 -07:00
parent 67cf241acd
commit 48f1159845
5 changed files with 83 additions and 27 deletions
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26
components/style/properties.mako.rs
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@ -5135,16 +5135,18 @@ pub mod shorthands {
'border-%s-radius' % (corner)
for corner in ['top-left', 'top-right', 'bottom-right', 'bottom-left']
)}">
use util::geometry::Au;
use values::specified::{Length, LengthOrPercentage};
use values::specified::BorderRadiusSize;
let _ignored = context;
fn parse_one_set_of_border_radii(mut input: &mut Parser)
-> Result<[BorderRadiusSize; 4], ()> {
fn parse_one_set_of_border_values(mut input: &mut Parser)
-> Result<[LengthOrPercentage; 4], ()> {
let mut count = 0;
let mut values = [BorderRadiusSize::zero(); 4];
let mut values = [LengthOrPercentage::Length(Length::Absolute(Au(0))); 4];
while count < 4 {
if let Ok(value) = input.try(BorderRadiusSize::parse_one_radii) {
if let Ok(value) = input.try(LengthOrPercentage::parse) {
values[count] = value;
count += 1;
} else {
@ -5161,9 +5163,21 @@ pub mod shorthands {
}
}
let radii = try!(parse_one_set_of_border_radii(input));
// TODO(bjwbell): Finish parsing code for elliptical borders.
fn parse_one_set_of_border_radii(mut input: &mut Parser)
-> Result<[BorderRadiusSize; 4], ()> {
let widths = try!(parse_one_set_of_border_values(input));
let mut heights = widths.clone();
let mut radii_values = [BorderRadiusSize::zero(); 4];
if input.try(|input| input.expect_delim('/')).is_ok() {
heights = try!(parse_one_set_of_border_values(input));
}
for i in 0..radii_values.len() {
radii_values[i] = BorderRadiusSize::new(widths[i], heights[i]);
}
Ok(radii_values)
}
let radii = try!(parse_one_set_of_border_radii(input));
Ok(Longhands {
border_top_left_radius: Some(radii[0]),
border_top_right_radius: Some(radii[1]),