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style: Require docs in the less-straightforward part of the properties module.

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Emilio Cobos Álvarez 2017-01-01 18:47:02 +01:00
parent 577bd15277
commit b556449a96
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3 changed files with 207 additions and 52 deletions
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1
components/style/lib.rs
View file

@ -148,6 +148,7 @@ use style_traits::ToCss;
// Generated from the properties.mako.rs template by build.rs
#[macro_use]
#[allow(unsafe_code)]
#[deny(missing_docs)]
pub mod properties {
include!(concat!(env!("OUT_DIR"), "/properties.rs"));
}

17
components/style/properties/helpers.mako.rs
View file

@ -405,7 +405,8 @@
% endfor
}
/// Represents a serializable set of all of the longhand properties that correspond to a shorthand
/// Represents a serializable set of all of the longhand properties that
/// correspond to a shorthand.
pub struct LonghandsToSerialize<'a> {
% for sub_property in shorthand.sub_properties:
pub ${sub_property.ident}: &'a DeclaredValue<longhands::${sub_property.ident}::SpecifiedValue>,
@ -617,16 +618,22 @@
</%def>
<%def name="logical_setter(name, need_clone=False)">
/// Set the appropriate physical property for ${name} given a writing mode.
pub fn set_${to_rust_ident(name)}(&mut self,
v: longhands::${to_rust_ident(name)}::computed_value::T,
wm: WritingMode) {
v: longhands::${to_rust_ident(name)}::computed_value::T,
wm: WritingMode) {
<%self:logical_setter_helper name="${name}">
<%def name="inner(physical_ident)">
self.set_${physical_ident}(v)
</%def>
</%self:logical_setter_helper>
}
pub fn copy_${to_rust_ident(name)}_from(&mut self, other: &Self, wm: WritingMode) {
/// Copy the appropriate physical property from another struct for ${name}
/// given a writing mode.
pub fn copy_${to_rust_ident(name)}_from(&mut self,
other: &Self,
wm: WritingMode) {
<%self:logical_setter_helper name="${name}">
<%def name="inner(physical_ident)">
self.copy_${physical_ident}_from(other)
@ -634,6 +641,8 @@
</%self:logical_setter_helper>
}
% if need_clone:
/// Get the computed value for the appropriate physical property for
/// ${name} given a writing mode.
pub fn clone_${to_rust_ident(name)}(&self, wm: WritingMode)
-> longhands::${to_rust_ident(name)}::computed_value::T {
<%self:logical_setter_helper name="${name}">

241
components/style/properties/properties.mako.rs
View file

@ -55,6 +55,8 @@ macro_rules! property_name {
#[path="${repr(os.path.join(os.path.dirname(__file__), 'declaration_block.rs'))[1:-1]}"]
pub mod declaration_block;
/// A module with all the code for longhand properties.
#[allow(missing_docs)]
pub mod longhands {
use cssparser::Parser;
use parser::{Parse, ParserContext};
@ -85,6 +87,9 @@ pub mod longhands {
<%include file="/longhand/xul.mako.rs" />
}
/// A module with code for all the shorthand css properties, and a few
/// serialization helpers.
#[allow(missing_docs)]
pub mod shorthands {
use cssparser::Parser;
use parser::{Parse, ParserContext};
@ -98,14 +103,19 @@ pub mod shorthands {
}
}
/// Parses a property for four different sides per CSS syntax.
///
/// * Zero or more than four values is invalid.
/// * One value sets them all
/// * Two values set (top, bottom) and (left, right)
/// * Three values set top, (left, right) and bottom
/// * Four values set them in order
///
/// returns the values in (top, right, bottom, left) order.
pub fn parse_four_sides<F, T>(input: &mut Parser, parse_one: F) -> Result<(T, T, T, T), ()>
where F: Fn(&mut Parser) -> Result<T, ()>, T: Clone
where F: Fn(&mut Parser) -> Result<T, ()>,
T: Clone,
{
// zero or more than four values is invalid.
// one value sets them all
// two values set (top, bottom) and (left, right)
// three values set top, (left, right) and bottom
// four values set them in order
let top = try!(parse_one(input));
let right;
let bottom;
@ -163,8 +173,6 @@ pub mod shorthands {
/// This needs to be "included" by mako at least after all longhand modules,
/// given they populate the global data.
pub mod animated_properties {
#![deny(missing_docs)]
<%include file="/helpers/animated_properties.mako.rs" />
}
@ -174,11 +182,14 @@ pub mod animated_properties {
mod property_bit_field {
use logical_geometry::WritingMode;
/// A bitfield for all longhand properties, in order to quickly test whether
/// we've seen one of them.
pub struct PropertyBitField {
storage: [u32; (${len(data.longhands)} - 1 + 32) / 32]
}
impl PropertyBitField {
/// Create a new `PropertyBitField`, with all the bits set to zero.
#[inline]
pub fn new() -> PropertyBitField {
PropertyBitField { storage: [0; (${len(data.longhands)} - 1 + 32) / 32] }
@ -188,13 +199,14 @@ mod property_bit_field {
fn get(&self, bit: usize) -> bool {
(self.storage[bit / 32] & (1 << (bit % 32))) != 0
}
#[inline]
fn set(&mut self, bit: usize) {
self.storage[bit / 32] |= 1 << (bit % 32)
}
% for i, property in enumerate(data.longhands):
% if not property.derived_from:
#[allow(non_snake_case)]
#[allow(non_snake_case, missing_docs)]
#[inline]
pub fn get_${property.ident}(&self) -> bool {
self.get(${i})
@ -206,7 +218,7 @@ mod property_bit_field {
}
% endif
% if property.logical:
#[allow(non_snake_case)]
#[allow(non_snake_case, missing_docs)]
pub fn get_physical_${property.ident}(&self, wm: WritingMode) -> bool {
<%helpers:logical_setter_helper name="${property.name}">
<%def name="inner(physical_ident)">
@ -214,7 +226,7 @@ mod property_bit_field {
</%def>
</%helpers:logical_setter_helper>
}
#[allow(non_snake_case)]
#[allow(non_snake_case, missing_docs)]
pub fn set_physical_${property.ident}(&mut self, wm: WritingMode) {
<%helpers:logical_setter_helper name="${property.name}">
<%def name="inner(physical_ident)">
@ -229,6 +241,8 @@ mod property_bit_field {
% for property in data.longhands:
% if not property.derived_from:
/// Perform CSS variable substitution if needed, and execute `f` with
/// the resulting declared value.
#[allow(non_snake_case)]
fn substitute_variables_${property.ident}<F>(
value: &DeclaredValue<longhands::${property.ident}::SpecifiedValue>,
@ -268,7 +282,8 @@ mod property_bit_field {
f: F,
error_reporter: &mut StdBox<ParseErrorReporter + Send>,
extra_data: ParserContextExtraData)
where F: FnOnce(&DeclaredValue<longhands::${property.ident}::SpecifiedValue>) {
where F: FnOnce(&DeclaredValue<longhands::${property.ident}::SpecifiedValue>)
{
f(&
::custom_properties::substitute(css, first_token_type, custom_properties)
.and_then(|css| {
@ -308,7 +323,9 @@ mod property_bit_field {
% endif
% endfor
/// Only keep the "winning" declaration for any given property, by importance then source order.
/// Given a property declaration block, only keep the "winning" declaration for
/// any given property, by importance then source order.
///
/// The input and output are in source order
fn deduplicate_property_declarations(block: &mut PropertyDeclarationBlock) {
let mut deduplicated = Vec::new();
@ -379,10 +396,14 @@ fn remove_one<T, F: FnMut(&T) -> bool>(v: &mut Vec<T>, mut remove_this: F) {
debug_assert_eq!(v.len(), previous_len - 1);
}
/// An enum to represent a CSS Wide keyword.
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum CSSWideKeyword {
/// The `initial` keyword.
InitialKeyword,
/// The `inherit` keyword.
InheritKeyword,
/// The `unset` keyword.
UnsetKeyword,
}
@ -397,15 +418,18 @@ impl Parse for CSSWideKeyword {
}
}
/// An identifier for a given longhand property.
#[derive(Clone, Copy, Eq, PartialEq, Debug)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub enum LonghandId {
% for i, property in enumerate(data.longhands):
/// ${property.name}
${property.camel_case} = ${i},
% endfor
}
impl LonghandId {
/// Get the name of this longhand property.
pub fn name(&self) -> &'static str {
match *self {
% for property in data.longhands:
@ -415,21 +439,26 @@ impl LonghandId {
}
}
/// An identifier for a given shorthand property.
#[derive(Clone, Copy, Eq, PartialEq, Debug)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub enum ShorthandId {
% for property in data.shorthands:
/// ${property.name}
${property.camel_case},
% endfor
}
impl ToCss for ShorthandId {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where W: fmt::Write,
{
dest.write_str(self.name())
}
}
impl ShorthandId {
/// Get the name for this shorthand property.
pub fn name(&self) -> &'static str {
match *self {
% for property in data.shorthands:
@ -438,6 +467,7 @@ impl ShorthandId {
}
}
/// Get the longhand ids that form this shorthand.
pub fn longhands(&self) -> &'static [LonghandId] {
% for property in data.shorthands:
static ${property.ident.upper()}: &'static [LonghandId] = &[
@ -453,8 +483,14 @@ impl ShorthandId {
}
}
/// Try to serialize the given declarations as this shorthand.
///
/// Returns an error if writing to the stream fails, or if the declarations
/// do not map to a shorthand.
pub fn longhands_to_css<'a, W, I>(&self, declarations: I, dest: &mut W) -> fmt::Result
where W: fmt::Write, I: Iterator<Item=&'a PropertyDeclaration> {
where W: fmt::Write,
I: Iterator<Item=&'a PropertyDeclaration>,
{
match *self {
% for property in data.shorthands:
ShorthandId::${property.camel_case} => {
@ -501,9 +537,9 @@ impl ShorthandId {
is_first_serialization: &mut bool,
importance: Importance)
-> Result<bool, fmt::Error>
where W: Write,
I: IntoIterator<Item=&'a PropertyDeclaration>,
I::IntoIter: Clone,
where W: Write,
I: IntoIterator<Item=&'a PropertyDeclaration>,
I::IntoIter: Clone,
{
match self.get_shorthand_appendable_value(declarations) {
None => Ok(false),
@ -594,7 +630,9 @@ impl<T: HasViewportPercentage> HasViewportPercentage for DeclaredValue<T> {
}
impl<T: ToCss> ToCss for DeclaredValue<T> {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where W: fmt::Write,
{
match *self {
DeclaredValue::Value(ref inner) => inner.to_css(dest),
DeclaredValue::WithVariables { ref css, from_shorthand: None, .. } => {
@ -609,15 +647,21 @@ impl<T: ToCss> ToCss for DeclaredValue<T> {
}
}
/// An identifier for a given property declaration, which can be either a
/// longhand or a custom property.
#[derive(PartialEq, Clone)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub enum PropertyDeclarationId<'a> {
/// A longhand.
Longhand(LonghandId),
/// A custom property declaration.
Custom(&'a ::custom_properties::Name),
}
impl<'a> ToCss for PropertyDeclarationId<'a> {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where W: fmt::Write,
{
match *self {
PropertyDeclarationId::Longhand(id) => dest.write_str(id.name()),
PropertyDeclarationId::Custom(name) => write!(dest, "--{}", name),
@ -626,6 +670,8 @@ impl<'a> ToCss for PropertyDeclarationId<'a> {
}
impl<'a> PropertyDeclarationId<'a> {
/// Whether a given declaration id is either the same as `other`, or a
/// longhand of it.
pub fn is_or_is_longhand_of(&self, other: &PropertyId) -> bool {
match *self {
PropertyDeclarationId::Longhand(id) => {
@ -641,6 +687,8 @@ impl<'a> PropertyDeclarationId<'a> {
}
}
/// Whether a given declaration id is a longhand belonging to this
/// shorthand.
pub fn is_longhand_of(&self, shorthand: ShorthandId) -> bool {
match *self {
PropertyDeclarationId::Longhand(ref id) => shorthand.longhands().contains(id),
@ -649,10 +697,15 @@ impl<'a> PropertyDeclarationId<'a> {
}
}
/// Servo's representation of a CSS property, that is, either a longhand, a
/// shorthand, or a custom property.
#[derive(Eq, PartialEq, Clone)]
pub enum PropertyId {
/// A longhand property.
Longhand(LonghandId),
/// A shorthand property.
Shorthand(ShorthandId),
/// A custom property.
Custom(::custom_properties::Name),
}
@ -683,6 +736,8 @@ enum StaticId {
include!(concat!(env!("OUT_DIR"), "/static_ids.rs"));
impl PropertyId {
/// Returns a given property from the string `s`.
///
/// Returns Err(()) for unknown non-custom properties
pub fn parse(s: Cow<str>) -> Result<Self, ()> {
if let Ok(name) = ::custom_properties::parse_name(&s) {
@ -697,6 +752,7 @@ impl PropertyId {
}
}
/// Returns a property id from Gecko's nsCSSPropertyID.
#[cfg(feature = "gecko")]
#[allow(non_upper_case_globals)]
pub fn from_nscsspropertyid(id: nsCSSPropertyID) -> Result<Self, ()> {
@ -725,6 +781,8 @@ impl PropertyId {
}
}
/// Given this property id, get it either as a shorthand or as a
/// `PropertyDeclarationId`.
pub fn as_shorthand(&self) -> Result<ShorthandId, PropertyDeclarationId> {
match *self {
PropertyId::Shorthand(id) => Ok(id),
@ -734,12 +792,16 @@ impl PropertyId {
}
}
/// Servo's representation for a property declaration.
#[derive(PartialEq, Clone)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
pub enum PropertyDeclaration {
% for property in data.longhands:
/// ${property.name}
${property.camel_case}(DeclaredValue<longhands::${property.ident}::SpecifiedValue>),
% endfor
/// A custom property declaration, with the property name and the declared
/// value.
Custom(::custom_properties::Name, DeclaredValue<::custom_properties::SpecifiedValue>),
}
@ -758,12 +820,21 @@ impl HasViewportPercentage for PropertyDeclaration {
}
}
/// The result of parsing a property declaration.
#[derive(Eq, PartialEq, Copy, Clone)]
pub enum PropertyDeclarationParseResult {
/// The property declaration was for an unknown property.
UnknownProperty,
/// The property declaration was for a disabled experimental property.
ExperimentalProperty,
/// The property declaration contained an invalid value.
InvalidValue,
/// The declaration contained an animation property, and we were parsing
/// this as a keyframe block (so that property should be ignored).
///
/// See: https://drafts.csswg.org/css-animations/#keyframes
AnimationPropertyInKeyframeBlock,
/// The declaration was either valid or ignored.
ValidOrIgnoredDeclaration,
}
@ -786,7 +857,9 @@ impl fmt::Debug for PropertyDeclaration {
}
impl ToCss for PropertyDeclaration {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where W: fmt::Write,
{
match *self {
% for property in data.longhands:
% if not property.derived_from:
@ -803,6 +876,7 @@ impl ToCss for PropertyDeclaration {
}
impl PropertyDeclaration {
/// Given a property declaration, return the property declaration id.
pub fn id(&self) -> PropertyDeclarationId {
match *self {
% for property in data.longhands:
@ -816,7 +890,7 @@ impl PropertyDeclaration {
}
}
pub fn with_variables_from_shorthand(&self, shorthand: ShorthandId) -> Option< &str> {
fn with_variables_from_shorthand(&self, shorthand: ShorthandId) -> Option< &str> {
match *self {
% for property in data.longhands:
PropertyDeclaration::${property.camel_case}(ref value) => match *value {
@ -848,9 +922,12 @@ impl PropertyDeclaration {
}
}
/// Return whether the value is stored as it was in the CSS source, preserving whitespace
/// (as opposed to being parsed into a more abstract data structure).
/// This is the case of custom properties and values that contain unsubstituted variables.
/// Return whether the value is stored as it was in the CSS source,
/// preserving whitespace (as opposed to being parsed into a more abstract
/// data structure).
///
/// This is the case of custom properties and values that contain
/// unsubstituted variables.
pub fn value_is_unparsed(&self) -> bool {
match *self {
% for property in data.longhands:
@ -973,6 +1050,7 @@ impl PropertyDeclaration {
}
}
/// The shorthands that this longhand is part of.
pub fn shorthands(&self) -> &'static [ShorthandId] {
// first generate longhand to shorthands lookup map
<%
@ -1026,6 +1104,7 @@ impl PropertyDeclaration {
#[cfg(feature = "gecko")]
pub use gecko_properties::style_structs;
/// The module where all the style structs are defined.
#[cfg(feature = "servo")]
pub mod style_structs {
use fnv::FnvHasher;
@ -1040,11 +1119,14 @@ pub mod style_structs {
#[derive(PartialEq, Clone, Debug)]
% endif
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
/// The ${style_struct.name} style struct.
pub struct ${style_struct.name} {
% for longhand in style_struct.longhands:
/// The ${longhand.name} computed value.
pub ${longhand.ident}: longhands::${longhand.ident}::computed_value::T,
% endfor
% if style_struct.name == "Font":
/// The font hash, used for font caching.
pub hash: u64,
% endif
}
@ -1065,17 +1147,20 @@ pub mod style_structs {
% if longhand.logical:
${helpers.logical_setter(name=longhand.name)}
% else:
/// Set ${longhand.name}.
#[allow(non_snake_case)]
#[inline]
pub fn set_${longhand.ident}(&mut self, v: longhands::${longhand.ident}::computed_value::T) {
self.${longhand.ident} = v;
}
/// Set ${longhand.name} from other struct.
#[allow(non_snake_case)]
#[inline]
pub fn copy_${longhand.ident}_from(&mut self, other: &Self) {
self.${longhand.ident} = other.${longhand.ident}.clone();
}
% if longhand.need_clone:
/// Get the computed value for ${longhand.name}.
#[allow(non_snake_case)]
#[inline]
pub fn clone_${longhand.ident}(&self) -> longhands::${longhand.ident}::computed_value::T {
@ -1084,11 +1169,14 @@ pub mod style_structs {
% endif
% endif
% if longhand.need_index:
/// If this longhand is indexed, get the number of elements.
#[allow(non_snake_case)]
pub fn ${longhand.ident}_count(&self) -> usize {
self.${longhand.ident}.0.len()
}
/// If this longhand is indexed, get the element at given
/// index.
#[allow(non_snake_case)]
pub fn ${longhand.ident}_at(&self, index: usize)
-> longhands::${longhand.ident}::computed_value::SingleComputedValue {
@ -1098,14 +1186,18 @@ pub mod style_structs {
% endfor
% if style_struct.name == "Border":
% for side in ["top", "right", "bottom", "left"]:
/// Whether the border-${side} property has nonzero width.
#[allow(non_snake_case)]
pub fn border_${side}_has_nonzero_width(&self) -> bool {
self.border_${side}_width != ::app_units::Au(0)
}
% endfor
% elif style_struct.name == "Font":
/// Computes a font hash in order to be able to cache fonts
/// effectively in GFX and layout.
pub fn compute_font_hash(&mut self) {
// Corresponds to the fields in `gfx::font_template::FontTemplateDescriptor`.
// Corresponds to the fields in
// `gfx::font_template::FontTemplateDescriptor`.
let mut hasher: FnvHasher = Default::default();
hasher.write_u16(self.font_weight as u16);
self.font_stretch.hash(&mut hasher);
@ -1113,20 +1205,26 @@ pub mod style_structs {
self.hash = hasher.finish()
}
% elif style_struct.name == "Outline":
/// Whether the outline-width property is non-zero.
#[inline]
pub fn outline_has_nonzero_width(&self) -> bool {
self.outline_width != ::app_units::Au(0)
}
% elif style_struct.name == "Text":
<% text_decoration_field = 'text_decoration' if product == 'servo' else 'text_decoration_line' %>
/// Whether the text decoration has an underline.
#[inline]
pub fn has_underline(&self) -> bool {
self.${text_decoration_field}.underline
}
/// Whether the text decoration has an overline.
#[inline]
pub fn has_overline(&self) -> bool {
self.${text_decoration_field}.overline
}
/// Whether the text decoration has a line through.
#[inline]
pub fn has_line_through(&self) -> bool {
self.${text_decoration_field}.line_through
@ -1141,6 +1239,7 @@ pub mod style_structs {
impl style_structs::${style_struct.name} {
% for longhand in style_struct.longhands:
% if longhand.need_index:
/// Iterate over the values of ${longhand.name}.
#[allow(non_snake_case)]
#[inline]
pub fn ${longhand.ident}_iter(&self) -> ${longhand.camel_case}Iter {
@ -1151,6 +1250,7 @@ pub mod style_structs {
}
}
/// Get a value mod `index` for the property ${longhand.name}.
#[allow(non_snake_case)]
#[inline]
pub fn ${longhand.ident}_mod(&self, index: usize)
@ -1163,6 +1263,7 @@ pub mod style_structs {
% for longhand in style_struct.longhands:
% if longhand.need_index:
/// An iterator over the values of the ${longhand.name} properties.
pub struct ${longhand.camel_case}Iter<'a> {
style_struct: &'a style_structs::${style_struct.name},
current: usize,
@ -1189,9 +1290,16 @@ pub mod style_structs {
#[cfg(feature = "gecko")]
pub use gecko_properties::ComputedValues;
/// A legacy alias for a servo-version of ComputedValues. Should go away soon.
#[cfg(feature = "servo")]
pub type ServoComputedValues = ComputedValues;
/// The struct that Servo uses to represent computed values.
///
/// This struct contains an immutable atomically-reference-counted pointer to
/// every kind of style struct.
///
/// When needed, the structs may be copied in order to get mutated.
#[cfg(feature = "servo")]
#[cfg_attr(feature = "servo", derive(Clone, Debug))]
pub struct ComputedValues {
@ -1228,40 +1336,50 @@ impl ComputedValues {
}
}
/// Get the initial computed values.
pub fn initial_values() -> &'static Self { &*INITIAL_SERVO_VALUES }
#[inline]
pub fn do_cascade_property<F: FnOnce(&[CascadePropertyFn])>(f: F) {
f(&CASCADE_PROPERTY)
}
% for style_struct in data.active_style_structs():
/// Clone the ${style_struct.name} struct.
#[inline]
pub fn clone_${style_struct.name_lower}(&self) -> Arc<style_structs::${style_struct.name}> {
self.${style_struct.ident}.clone()
}
self.${style_struct.ident}.clone()
}
/// Get a immutable reference to the ${style_struct.name} struct.
#[inline]
pub fn get_${style_struct.name_lower}(&self) -> &style_structs::${style_struct.name} {
&self.${style_struct.ident}
}
/// Get a mutable reference to the ${style_struct.name} struct.
#[inline]
pub fn mutate_${style_struct.name_lower}(&mut self) -> &mut style_structs::${style_struct.name} {
Arc::make_mut(&mut self.${style_struct.ident})
}
% endfor
// Cloning the Arc here is fine because it only happens in the case where we have custom
// properties, and those are both rare and expensive.
pub fn custom_properties(&self) -> Option<Arc<::custom_properties::ComputedValuesMap>> {
/// Get the custom properties map if necessary.
///
/// Cloning the Arc here is fine because it only happens in the case where
/// we have custom properties, and those are both rare and expensive.
fn custom_properties(&self) -> Option<Arc<::custom_properties::ComputedValuesMap>> {
self.custom_properties.as_ref().map(|x| x.clone())
}
/// Whether this style has a -moz-binding value. This is always false for
/// Servo for obvious reasons.
pub fn has_moz_binding(&self) -> bool { false }
pub fn root_font_size(&self) -> Au { self.root_font_size }
pub fn set_root_font_size(&mut self, size: Au) { self.root_font_size = size }
/// Get the root font size.
fn root_font_size(&self) -> Au { self.root_font_size }
/// Set the root font size.
fn set_root_font_size(&mut self, size: Au) { self.root_font_size = size }
/// Set the writing mode for this style.
pub fn set_writing_mode(&mut self, mode: WritingMode) { self.writing_mode = mode; }
/// Whether the current style is multicolumn.
#[inline]
pub fn is_multicol(&self) -> bool {
let style = self.get_column();
@ -1272,8 +1390,9 @@ impl ComputedValues {
}
/// Resolves the currentColor keyword.
/// Any color value form computed values (except for the 'color' property itself)
/// should go through this method.
///
/// Any color value from computed values (except for the 'color' property
/// itself) should go through this method.
///
/// Usage example:
/// let top_color = style.resolve_color(style.Border.border_top_color);
@ -1285,6 +1404,7 @@ impl ComputedValues {
}
}
/// Get the logical computed inline size.
#[inline]
pub fn content_inline_size(&self) -> computed::LengthOrPercentageOrAuto {
let position_style = self.get_position();
@ -1295,36 +1415,42 @@ impl ComputedValues {
}
}
/// Get the logical computed block size.
#[inline]
pub fn content_block_size(&self) -> computed::LengthOrPercentageOrAuto {
let position_style = self.get_position();
if self.writing_mode.is_vertical() { position_style.width } else { position_style.height }
}
/// Get the logical computed min inline size.
#[inline]
pub fn min_inline_size(&self) -> computed::LengthOrPercentage {
let position_style = self.get_position();
if self.writing_mode.is_vertical() { position_style.min_height } else { position_style.min_width }
}
/// Get the logical computed min block size.
#[inline]
pub fn min_block_size(&self) -> computed::LengthOrPercentage {
let position_style = self.get_position();
if self.writing_mode.is_vertical() { position_style.min_width } else { position_style.min_height }
}
/// Get the logical computed max inline size.
#[inline]
pub fn max_inline_size(&self) -> computed::LengthOrPercentageOrNone {
let position_style = self.get_position();
if self.writing_mode.is_vertical() { position_style.max_height } else { position_style.max_width }
}
/// Get the logical computed max block size.
#[inline]
pub fn max_block_size(&self) -> computed::LengthOrPercentageOrNone {
let position_style = self.get_position();
if self.writing_mode.is_vertical() { position_style.max_width } else { position_style.max_height }
}
/// Get the logical computed padding for this writing mode.
#[inline]
pub fn logical_padding(&self) -> LogicalMargin<computed::LengthOrPercentage> {
let padding_style = self.get_padding();
@ -1336,6 +1462,7 @@ impl ComputedValues {
))
}
/// Get the logical border width
#[inline]
pub fn border_width_for_writing_mode(&self, writing_mode: WritingMode) -> LogicalMargin<Au> {
let border_style = self.get_border();
@ -1347,11 +1474,13 @@ impl ComputedValues {
))
}
/// Gets the logical computed border widths for this style.
#[inline]
pub fn logical_border_width(&self) -> LogicalMargin<Au> {
self.border_width_for_writing_mode(self.writing_mode)
}
/// Gets the logical computed margin from this style.
#[inline]
pub fn logical_margin(&self) -> LogicalMargin<computed::LengthOrPercentageOrAuto> {
let margin_style = self.get_margin();
@ -1363,6 +1492,7 @@ impl ComputedValues {
))
}
/// Gets the logical position from this style.
#[inline]
pub fn logical_position(&self) -> LogicalMargin<computed::LengthOrPercentageOrAuto> {
// FIXME(SimonSapin): should be the writing mode of the containing block, maybe?
@ -1375,7 +1505,7 @@ impl ComputedValues {
))
}
// http://dev.w3.org/csswg/css-transforms/#grouping-property-values
/// https://drafts.csswg.org/css-transforms/#grouping-property-values
pub fn get_used_transform_style(&self) -> computed_values::transform_style::T {
use computed_values::mix_blend_mode;
use computed_values::transform_style;
@ -1404,6 +1534,8 @@ impl ComputedValues {
box_.transform_style
}
/// Whether given this transform value, the compositor would require a
/// layer.
pub fn transform_requires_layer(&self) -> bool {
// Check if the transform matrix is 2D or 3D
if let Some(ref transform_list) = self.get_box().transform.0 {
@ -1436,6 +1568,7 @@ impl ComputedValues {
false
}
/// Serializes the computed value of this property as a string.
pub fn computed_value_to_string(&self, property: PropertyDeclarationId) -> String {
match property {
% for style_struct in data.active_style_structs():
@ -1504,6 +1637,7 @@ pub use self::lazy_static_module::INITIAL_SERVO_VALUES;
// Use a module to work around #[cfg] on lazy_static! not being applied to every generated item.
#[cfg(feature = "servo")]
#[allow(missing_docs)]
mod lazy_static_module {
use logical_geometry::WritingMode;
use std::sync::Arc;
@ -1530,6 +1664,7 @@ mod lazy_static_module {
}
}
/// A per-longhand function that performs the CSS cascade for that longhand.
pub type CascadePropertyFn =
extern "Rust" fn(declaration: &PropertyDeclaration,
inherited_style: &ComputedValues,
@ -1539,7 +1674,8 @@ pub type CascadePropertyFn =
cascade_info: &mut Option<<&mut CascadeInfo>,
error_reporter: &mut StdBox<ParseErrorReporter + Send>);
#[cfg(feature = "servo")]
/// A per-longhand array of functions to perform the CSS cascade on each of
/// them, effectively doing virtual dispatch.
static CASCADE_PROPERTY: [CascadePropertyFn; ${len(data.longhands)}] = [
% for property in data.longhands:
longhands::${property.ident}::cascade_property,
@ -1547,14 +1683,16 @@ static CASCADE_PROPERTY: [CascadePropertyFn; ${len(data.longhands)}] = [
];
bitflags! {
/// A set of flags to tweak the behavior of the `cascade` function.
pub flags CascadeFlags: u8 {
/// Whether the `ComputedValues` structure to be constructed should be considered
/// shareable.
/// Whether the `ComputedValues` structure to be constructed should be
/// considered shareable.
const SHAREABLE = 0x01,
/// Whether to inherit all styles from the parent. If this flag is not present,
/// non-inherited styles are reset to their initial values.
/// Whether to inherit all styles from the parent. If this flag is not
/// present, non-inherited styles are reset to their initial values.
const INHERIT_ALL = 0x02,
/// Whether to skip any root element and flex/grid item display style fixup.
/// Whether to skip any root element and flex/grid item display style
/// fixup.
const SKIP_ROOT_AND_ITEM_BASED_DISPLAY_FIXUP = 0x04,
}
}
@ -1624,7 +1762,8 @@ pub fn apply_declarations<'a, F, I>(viewport_size: Size2D<Au>,
font_metrics_provider: Option<<&FontMetricsProvider>,
flags: CascadeFlags)
-> ComputedValues
where F: Fn() -> I, I: Iterator<Item = &'a PropertyDeclaration>
where F: Fn() -> I,
I: Iterator<Item = &'a PropertyDeclaration>,
{
let inherited_custom_properties = inherited_style.custom_properties();
let mut custom_properties = None;
@ -1680,6 +1819,9 @@ pub fn apply_declarations<'a, F, I>(viewport_size: Size2D<Au>,
// Set computed values, overwriting earlier declarations for the same
// property.
//
// NB: The cacheable boolean is not used right now, but will be once we
// start caching computed values in the rule nodes.
let mut cacheable = true;
let mut seen = PropertyBitField::new();
@ -1850,6 +1992,9 @@ pub fn apply_declarations<'a, F, I>(viewport_size: Size2D<Au>,
% if product == "gecko":
// FIXME(emilio): This is effectively creating a new nsStyleBackground
// and nsStyleSVG per element. We should only do this when necessary
// using the `seen` bitfield!
style.mutate_background().fill_arrays();
style.mutate_svg().fill_arrays();
% endif