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https://github.com/servo/servo.git
synced 2025-07-22 14:53:49 +01:00
font-feature-settings gecko glue code
FeatureTagValue value property changed to use u32. ToCss for FeatureTagValue changed to allow conversion from u32 to string. Parse for the same struct updated to convert from string to u32. Added two functions to transfer settings to gecko and copy settings.
This commit is contained in:
Juan C. Gonzalez-Zurita
parent
3905b5af18
commit
a3dbf1d275
6 changed files with 79 additions and 17 deletions
1
Cargo.lock
generated
1
Cargo.lock
generated
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@ -2799,6 +2799,7 @@ name = "style_tests"
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version = "0.0.1"
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dependencies = [
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"app_units 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"cssparser 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"euclid 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
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"html5ever 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -1296,12 +1296,47 @@ fn static_assert() {
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skip_font_longhands = """font-family font-size font-size-adjust font-weight
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font-synthesis -x-lang font-variant-alternates
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font-variant-east-asian font-variant-ligatures
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font-variant-numeric font-language-override"""
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font-variant-numeric font-language-override
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font-feature-settings"""
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%>
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<%self:impl_trait style_struct_name="Font"
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skip_longhands="${skip_font_longhands}"
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skip_additionals="*">
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pub fn set_font_feature_settings(&mut self, v: longhands::font_feature_settings::computed_value::T) {
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use properties::longhands::font_feature_settings::computed_value::T;
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let current_settings = &mut self.gecko.mFont.fontFeatureSettings;
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current_settings.clear_pod();
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match v {
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T::Normal => unsafe { current_settings.set_len_pod(0) },
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T::Tag(feature_settings) => {
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unsafe { current_settings.set_len_pod(feature_settings.len() as u32) };
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for (current, feature) in current_settings.iter_mut().zip(feature_settings) {
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current.mTag = feature.tag;
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current.mValue = feature.value;
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}
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}
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};
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}
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pub fn copy_font_feature_settings_from(&mut self, other: &Self ) {
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let current_settings = &mut self.gecko.mFont.fontFeatureSettings;
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let feature_settings = &other.gecko.mFont.fontFeatureSettings;
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let settings_length = feature_settings.len() as u32;
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current_settings.clear_pod();
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unsafe { current_settings.set_len_pod(settings_length) };
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for (current, feature) in current_settings.iter_mut().zip(feature_settings.iter()) {
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current.mTag = feature.mTag;
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current.mValue = feature.mValue;
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}
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}
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pub fn set_font_family(&mut self, v: longhands::font_family::computed_value::T) {
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use properties::longhands::font_family::computed_value::FontFamily;
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use gecko_bindings::structs::FontFamilyType;
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@ -1754,7 +1754,7 @@ ${helpers.single_keyword_system("font-variant-position",
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spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-position",
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animation_value_type="none")}
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<%helpers:longhand name="font-feature-settings" products="none" animation_value_type="none" extra_prefixes="moz"
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<%helpers:longhand name="font-feature-settings" products="gecko" animation_value_type="none" extra_prefixes="moz"
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spec="https://drafts.csswg.org/css-fonts/#propdef-font-feature-settings">
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use std::fmt;
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use style_traits::ToCss;
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@ -1781,8 +1781,8 @@ ${helpers.single_keyword_system("font-variant-position",
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#[derive(Debug, Clone, PartialEq)]
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#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
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pub struct FeatureTagValue {
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pub tag: String,
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pub value: i32
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pub tag: u32,
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pub value: u32
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}
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impl ToCss for T {
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@ -1806,10 +1806,17 @@ ${helpers.single_keyword_system("font-variant-position",
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impl ToCss for FeatureTagValue {
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fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
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use std::str;
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use byteorder::{WriteBytesExt, NativeEndian};
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let mut raw: Vec<u8> = vec!();
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raw.write_u32::<NativeEndian>(self.tag).unwrap();
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let str_print = str::from_utf8(&raw).unwrap_or_default();
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match self.value {
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1 => write!(dest, "\"{}\"", self.tag),
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0 => write!(dest, "\"{}\" off", self.tag),
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x => write!(dest, "\"{}\" {}", self.tag, x)
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1 => write!(dest, "\"{}\"", str_print),
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0 => write!(dest, "\"{}\" off",str_print),
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x => write!(dest, "\"{}\" {}", str_print, x)
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}
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}
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}
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@ -1818,6 +1825,11 @@ ${helpers.single_keyword_system("font-variant-position",
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/// https://www.w3.org/TR/css-fonts-3/#propdef-font-feature-settings
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/// <string> [ on | off | <integer> ]
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fn parse(_context: &ParserContext, input: &mut Parser) -> Result<Self, ()> {
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use std::io::Cursor;
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use std::str;
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use std::ops::Deref;
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use byteorder::{ReadBytesExt, NativeEndian};
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let tag = try!(input.expect_string());
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// allowed strings of length 4 containing chars: <U+20, U+7E>
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@ -1827,22 +1839,25 @@ ${helpers.single_keyword_system("font-variant-position",
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return Err(())
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}
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let mut raw = Cursor::new(tag.as_bytes());
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let u_tag = raw.read_u32::<NativeEndian>().unwrap();
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if let Ok(value) = input.try(|input| input.expect_integer()) {
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// handle integer, throw if it is negative
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if value >= 0 {
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Ok(FeatureTagValue { tag: tag.into_owned(), value: value })
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Ok(FeatureTagValue { tag: u_tag, value: value as u32 })
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} else {
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Err(())
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}
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} else if let Ok(_) = input.try(|input| input.expect_ident_matching("on")) {
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// on is an alias for '1'
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Ok(FeatureTagValue { tag: tag.into_owned(), value: 1 })
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Ok(FeatureTagValue { tag: u_tag, value: 1 })
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} else if let Ok(_) = input.try(|input| input.expect_ident_matching("off")) {
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// off is an alias for '0'
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Ok(FeatureTagValue { tag: tag.into_owned(), value: 0 })
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Ok(FeatureTagValue { tag: u_tag, value: 0 })
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} else {
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// empty value is an alias for '1'
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Ok(FeatureTagValue { tag:tag.into_owned(), value: 1 })
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Ok(FeatureTagValue { tag: u_tag, value: 1 })
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}
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}
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}
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@ -13,6 +13,7 @@ doctest = false
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testing = ["style/testing"]
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[dependencies]
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byteorder = "1.0"
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app_units = "0.4"
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cssparser = "0.13"
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euclid = "0.11"
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@ -6,6 +6,7 @@
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#![feature(plugin, test)]
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extern crate app_units;
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extern crate byteorder;
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extern crate cssparser;
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extern crate euclid;
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#[macro_use] extern crate html5ever;
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@ -10,38 +10,47 @@ use style_traits::ToCss;
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#[test]
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fn font_feature_settings_should_parse_properly() {
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use byteorder::{ReadBytesExt, NativeEndian};
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use std::io::Cursor;
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let normal = parse_longhand!(font_feature_settings, "normal");
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let normal_computed = computed_value::T::Normal;
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assert_eq!(normal, normal_computed);
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let mut a_d_bytes = Cursor::new(b"abcd");
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let mut e_h_bytes = Cursor::new(b"efgh");
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let abcd = a_d_bytes.read_u32::<NativeEndian>().unwrap();
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let efgh = e_h_bytes.read_u32::<NativeEndian>().unwrap();
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let on = parse_longhand!(font_feature_settings, "\"abcd\" on");
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let on_computed = computed_value::T::Tag(vec![
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FeatureTagValue { tag: String::from("abcd"), value: 1 }
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FeatureTagValue { tag: abcd, value: 1 }
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]);
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assert_eq!(on, on_computed);
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let off = parse_longhand!(font_feature_settings, "\"abcd\" off");
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let off_computed = computed_value::T::Tag(vec![
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FeatureTagValue { tag: String::from("abcd"), value: 0 }
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FeatureTagValue { tag: abcd, value: 0 }
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]);
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assert_eq!(off, off_computed);
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let no_value = parse_longhand!(font_feature_settings, "\"abcd\"");
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let no_value_computed = computed_value::T::Tag(vec![
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FeatureTagValue { tag: String::from("abcd"), value: 1 }
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FeatureTagValue { tag: abcd, value: 1 }
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]);
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assert_eq!(no_value, no_value_computed);
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let pos_integer = parse_longhand!(font_feature_settings, "\"abcd\" 100");
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let pos_integer_computed = computed_value::T::Tag(vec![
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FeatureTagValue { tag: String::from("abcd"), value: 100 }
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FeatureTagValue { tag: abcd, value: 100 }
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]);
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assert_eq!(pos_integer, pos_integer_computed);
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let multiple = parse_longhand!(font_feature_settings, "\"abcd\" off, \"efgh\"");
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let multiple_computed = computed_value::T::Tag(vec![
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FeatureTagValue { tag: String::from("abcd"), value: 0 },
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FeatureTagValue { tag: String::from("efgh"), value: 1 }
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FeatureTagValue { tag: abcd, value: 0 },
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FeatureTagValue { tag: efgh, value: 1 }
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]);
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assert_eq!(multiple, multiple_computed);
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}
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