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Move Servo-specific ToCss to style_traits
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6 changed files with 53 additions and 38 deletions
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@ -2,6 +2,53 @@
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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 http://mozilla.org/MPL/2.0/. */
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use app_units::Au;
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use cssparser::CssStringWriter;
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use std::fmt::{self, Write};
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use url::Url;
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/// The real ToCss trait can't be implemented for types in crates that don't
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/// depend on each other.
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pub trait ToCss {
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/// Serialize `self` in CSS syntax, writing to `dest`.
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write;
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/// Serialize `self` in CSS syntax and return a string.
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///
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/// (This is a convenience wrapper for `to_css` and probably should not be overridden.)
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#[inline]
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fn to_css_string(&self) -> String {
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let mut s = String::new();
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self.to_css(&mut s).unwrap();
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s
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}
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}
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impl ToCss for Au {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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write!(dest, "{}px", self.to_f64_px())
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}
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}
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impl ToCss for Url {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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try!(dest.write_str("url(\""));
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try!(write!(CssStringWriter::new(dest), "{}", self));
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try!(dest.write_str("\")"));
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Ok(())
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}
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}
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macro_rules! impl_to_css_for_predefined_type {
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($name: ty) => {
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impl<'a> ToCss for $name {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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::cssparser::ToCss::to_css(self, dest)
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}
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}
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};
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}
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#[macro_export]
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macro_rules! define_css_keyword_enum {
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($name: ident: $( $css: expr => $variant: ident ),+,) => {
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@ -61,7 +108,6 @@ macro_rules! __define_css_keyword_enum__actual {
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}
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}
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pub mod specified {
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use app_units::Au;
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