servo/components/style/properties/longhand/inherited_box.mako.rs

/* 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 http://mozilla.org/MPL/2.0/. */

<%namespace name="helpers" file="/helpers.mako.rs" />

<% data.new_style_struct("InheritedBox", inherited=True, gecko_name="Visibility") %>

${helpers.single_keyword("direction", "ltr rtl", need_clone=True, animatable=False)}

// TODO: collapse. Well, do tables first.
${helpers.single_keyword("visibility",
                         "visible hidden",
                         extra_gecko_values="collapse",
                         gecko_ffi_name="mVisible",
                         animatable=True)}

// CSS Writing Modes Level 3
// http://dev.w3.org/csswg/css-writing-modes/
${helpers.single_keyword("writing-mode",
                         "horizontal-tb vertical-rl vertical-lr",
                         experimental=True,
                         need_clone=True,
                         animatable=False)}

// FIXME(SimonSapin): Add 'mixed' and 'upright' (needs vertical text support)
// FIXME(SimonSapin): initial (first) value should be 'mixed', when that's implemented
// FIXME(bholley): sideways-right is needed as an alias to sideways in gecko.
${helpers.single_keyword("text-orientation",
                         "sideways",
                         experimental=True,
                         need_clone=True,
                         extra_gecko_values="mixed upright",
                         extra_servo_values="sideways-right sideways-left",
                         animatable=False)}

// CSS Color Module Level 4
// https://drafts.csswg.org/css-color/
${helpers.single_keyword("color-adjust",
                         "economy exact", products="gecko",
                         animatable=False)}

<%helpers:longhand name="image-rendering" products="servo" animatable="False">
    pub mod computed_value {
        use cssparser::ToCss;
        use std::fmt;

        #[derive(Copy, Clone, Debug, PartialEq)]
        #[cfg_attr(feature = "servo", derive(HeapSizeOf, Deserialize, Serialize))]
        pub enum T {
            Auto,
            CrispEdges,
            Pixelated,
        }

        impl ToCss for T {
            fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
                match *self {
                    T::Auto => dest.write_str("auto"),
                    T::CrispEdges => dest.write_str("crisp-edges"),
                    T::Pixelated => dest.write_str("pixelated"),
                }
            }
        }
    }

    use values::NoViewportPercentage;
    impl NoViewportPercentage for SpecifiedValue {}

    pub type SpecifiedValue = computed_value::T;

    #[inline]
    pub fn get_initial_value() -> computed_value::T {
        computed_value::T::Auto
    }

    pub fn parse(_: &ParserContext, input: &mut Parser) -> Result<SpecifiedValue,()> {
        // According to to CSS-IMAGES-3, `optimizespeed` and `optimizequality` are synonyms for
        // `auto`.
        match_ignore_ascii_case! {
            try!(input.expect_ident()),
            "auto" => Ok(computed_value::T::Auto),
            "optimizespeed" => Ok(computed_value::T::Auto),
            "optimizequality" => Ok(computed_value::T::Auto),
            "crisp-edges" => Ok(computed_value::T::CrispEdges),
            "pixelated" => Ok(computed_value::T::Pixelated),
            _ => Err(())
        }
    }

    impl ToComputedValue for SpecifiedValue {
        type ComputedValue = computed_value::T;

        #[inline]
        fn to_computed_value(&self, _: &Context) -> computed_value::T {
            *self
        }
    }
</%helpers:longhand>

// Used in the bottom-up flow construction traversal to avoid constructing flows for
// descendants of nodes with `display: none`.
<%helpers:longhand name="-servo-under-display-none"
                   derived_from="display"
                   products="servo"
                   animatable="False">
    use cssparser::ToCss;
    use std::fmt;
    use values::computed::ComputedValueAsSpecified;
    use values::NoViewportPercentage;

    impl NoViewportPercentage for SpecifiedValue {}

    #[derive(Copy, Clone, Debug, Eq, PartialEq)]
    #[cfg_attr(feature = "servo", derive(HeapSizeOf, Deserialize, Serialize))]
    pub struct SpecifiedValue(pub bool);

    pub mod computed_value {
        pub type T = super::SpecifiedValue;
    }
    impl ComputedValueAsSpecified for SpecifiedValue {}

    pub fn get_initial_value() -> computed_value::T {
        SpecifiedValue(false)
    }

    impl ToCss for SpecifiedValue {
        fn to_css<W>(&self, _: &mut W) -> fmt::Result where W: fmt::Write {
            Ok(()) // Internal property
        }
    }

    #[inline]
    pub fn derive_from_display(context: &mut Context) {
        use super::display::computed_value::T as Display;

        if context.style().get_box().clone_display() == Display::none {
            context.mutate_style().mutate_inheritedbox()
                                  .set__servo_under_display_none(SpecifiedValue(true));
        }
    }
</%helpers:longhand>