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Diffstat (limited to '')
| -rw-r--r-- | servo/components/style/properties/longhands/font.mako.rs | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/servo/components/style/properties/longhands/font.mako.rs b/servo/components/style/properties/longhands/font.mako.rs new file mode 100644 index 0000000000..e29871d3e8 --- /dev/null +++ b/servo/components/style/properties/longhands/font.mako.rs @@ -0,0 +1,464 @@ +/* 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 https://mozilla.org/MPL/2.0/. */ + +<%namespace name="helpers" file="/helpers.mako.rs" /> +<% from data import Method, to_camel_case, to_rust_ident, to_camel_case_lower, SYSTEM_FONT_LONGHANDS %> + +<% data.new_style_struct("Font", inherited=True) %> + +${helpers.predefined_type( + "font-family", + "FontFamily", + engines="gecko servo-2013 servo-2020", + initial_value="computed::FontFamily::serif()", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-family", + servo_restyle_damage="rebuild_and_reflow", +)} + +${helpers.predefined_type( + "font-style", + "FontStyle", + engines="gecko servo-2013 servo-2020", + initial_value="computed::FontStyle::normal()", + initial_specified_value="specified::FontStyle::normal()", + animation_value_type="FontStyle", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-style", + servo_restyle_damage="rebuild_and_reflow", +)} + +<% font_variant_caps_custom_consts= { "small-caps": "SMALLCAPS", + "all-small-caps": "ALLSMALL", + "petite-caps": "PETITECAPS", + "all-petite-caps": "ALLPETITE", + "titling-caps": "TITLING" } %> + +${helpers.single_keyword( + "font-variant-caps", + "normal small-caps", + engines="gecko servo-2013 servo-2020", + extra_gecko_values="all-small-caps petite-caps all-petite-caps unicase titling-caps", + gecko_constant_prefix="NS_FONT_VARIANT_CAPS", + gecko_ffi_name="mFont.variantCaps", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-caps", + custom_consts=font_variant_caps_custom_consts, + animation_value_type="discrete", + servo_restyle_damage="rebuild_and_reflow", +)} + +${helpers.predefined_type( + "font-weight", + "FontWeight", + engines="gecko servo-2013 servo-2020", + initial_value="computed::FontWeight::normal()", + initial_specified_value="specified::FontWeight::normal()", + animation_value_type="Number", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-weight", + servo_restyle_damage="rebuild_and_reflow", +)} + +${helpers.predefined_type( + "font-size", + "FontSize", + engines="gecko servo-2013 servo-2020", + initial_value="computed::FontSize::medium()", + initial_specified_value="specified::FontSize::medium()", + animation_value_type="NonNegativeLength", + allow_quirks="Yes", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-size", + servo_restyle_damage="rebuild_and_reflow", +)} + +${helpers.predefined_type( + "font-size-adjust", + "FontSizeAdjust", + engines="gecko", + initial_value="computed::FontSizeAdjust::None", + initial_specified_value="specified::FontSizeAdjust::None", + animation_value_type="FontSizeAdjust", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-size-adjust", +)} + +${helpers.predefined_type( + "font-synthesis", + "FontSynthesis", + engines="gecko", + initial_value="specified::FontSynthesis::get_initial_value()", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-synthesis", +)} + +${helpers.predefined_type( + "font-stretch", + "FontStretch", + engines="gecko servo-2013 servo-2020", + initial_value="computed::FontStretch::hundred()", + initial_specified_value="specified::FontStretch::normal()", + animation_value_type="Percentage", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-stretch", + servo_restyle_damage="rebuild_and_reflow", +)} + +${helpers.single_keyword( + "font-kerning", + "auto none normal", + engines="gecko", + gecko_ffi_name="mFont.kerning", + gecko_constant_prefix="NS_FONT_KERNING", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-kerning", + animation_value_type="discrete", +)} + +${helpers.predefined_type( + "font-variant-alternates", + "FontVariantAlternates", + engines="gecko", + initial_value="computed::FontVariantAlternates::default()", + initial_specified_value="specified::FontVariantAlternates::default()", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-alternates", +)} + +${helpers.predefined_type( + "font-variant-east-asian", + "FontVariantEastAsian", + engines="gecko", + initial_value="computed::FontVariantEastAsian::empty()", + initial_specified_value="specified::FontVariantEastAsian::empty()", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-east-asian", +)} + +${helpers.single_keyword( + "font-variant-emoji", + "normal text emoji unicode", + engines="gecko", + gecko_pref="layout.css.font-variant-emoji.enabled", + has_effect_on_gecko_scrollbars=False, + gecko_enum_prefix="StyleFontVariantEmoji", + gecko_ffi_name="mFont.variantEmoji", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-emoji", + animation_value_type="discrete", +)} + +${helpers.predefined_type( + "font-variant-ligatures", + "FontVariantLigatures", + engines="gecko", + initial_value="computed::FontVariantLigatures::empty()", + initial_specified_value="specified::FontVariantLigatures::empty()", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-ligatures", +)} + +${helpers.predefined_type( + "font-variant-numeric", + "FontVariantNumeric", + engines="gecko", + initial_value="computed::FontVariantNumeric::empty()", + initial_specified_value="specified::FontVariantNumeric::empty()", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-numeric", +)} + +${helpers.single_keyword( + "font-variant-position", + "normal sub super", + engines="gecko", + gecko_ffi_name="mFont.variantPosition", + gecko_constant_prefix="NS_FONT_VARIANT_POSITION", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-variant-position", + animation_value_type="discrete", +)} + +${helpers.predefined_type( + "font-feature-settings", + "FontFeatureSettings", + engines="gecko", + initial_value="computed::FontFeatureSettings::normal()", + initial_specified_value="specified::FontFeatureSettings::normal()", + extra_prefixes="moz:layout.css.prefixes.font-features", + animation_value_type="discrete", + spec="https://drafts.csswg.org/css-fonts/#propdef-font-feature-settings", +)} + +${helpers.predefined_type( + "font-variation-settings", + "FontVariationSettings", + engines="gecko", + gecko_pref="layout.css.font-variations.enabled", + has_effect_on_gecko_scrollbars=False, + initial_value="computed::FontVariationSettings::normal()", + initial_specified_value="specified::FontVariationSettings::normal()", + animation_value_type="ComputedValue", + spec="https://drafts.csswg.org/css-fonts-4/#propdef-font-variation-settings" +)} + +${helpers.predefined_type( + "font-language-override", + "FontLanguageOverride", + engines="gecko", + initial_value="computed::FontLanguageOverride::zero()", + initial_specified_value="specified::FontLanguageOverride::normal()", + animation_value_type="discrete", + extra_prefixes="moz:layout.css.prefixes.font-features", + spec="https://drafts.csswg.org/css-fonts-3/#propdef-font-language-override", +)} + +${helpers.single_keyword( + "font-optical-sizing", + "auto none", + engines="gecko", + gecko_pref="layout.css.font-variations.enabled", + has_effect_on_gecko_scrollbars=False, + gecko_ffi_name="mFont.opticalSizing", + gecko_constant_prefix="NS_FONT_OPTICAL_SIZING", + animation_value_type="discrete", + spec="https://www.w3.org/TR/css-fonts-4/#font-optical-sizing-def", +)} + +${helpers.predefined_type( + "font-palette", + "FontPalette", + engines="gecko", + initial_value="computed::FontPalette::normal()", + initial_specified_value="specified::FontPalette::normal()", + animation_value_type="discrete", + gecko_pref="layout.css.font-palette.enabled", + has_effect_on_gecko_scrollbars=False, + spec="https://drafts.csswg.org/css-fonts/#font-palette-prop", +)} + +${helpers.predefined_type( + "-x-lang", + "XLang", + engines="gecko", + initial_value="computed::XLang::get_initial_value()", + animation_value_type="none", + enabled_in="", + has_effect_on_gecko_scrollbars=False, + spec="Internal (not web-exposed)", +)} + +${helpers.predefined_type( + "-moz-script-size-multiplier", + "MozScriptSizeMultiplier", + engines="gecko", + initial_value="computed::MozScriptSizeMultiplier::get_initial_value()", + animation_value_type="none", + gecko_ffi_name="mScriptSizeMultiplier", + enabled_in="", + has_effect_on_gecko_scrollbars=False, + spec="Internal (not web-exposed)", +)} + +${helpers.predefined_type( + "math-depth", + "MathDepth", + "0", + engines="gecko", + gecko_pref="layout.css.math-depth.enabled", + has_effect_on_gecko_scrollbars=False, + animation_value_type="none", + enabled_in="ua", + spec="https://mathml-refresh.github.io/mathml-core/#the-math-script-level-property", +)} + +${helpers.single_keyword( + "math-style", + "normal compact", + engines="gecko", + gecko_enum_prefix="StyleMathStyle", + gecko_pref="layout.css.math-style.enabled", + spec="https://mathml-refresh.github.io/mathml-core/#the-math-style-property", + has_effect_on_gecko_scrollbars=False, + animation_value_type="none", + enabled_in="ua", + needs_conversion=True, +)} + +${helpers.single_keyword( + "-moz-math-variant", + """none normal bold italic bold-italic script bold-script + fraktur double-struck bold-fraktur sans-serif + bold-sans-serif sans-serif-italic sans-serif-bold-italic + monospace initial tailed looped stretched""", + engines="gecko", + gecko_enum_prefix="StyleMathVariant", + gecko_ffi_name="mMathVariant", + spec="Internal (not web-exposed)", + animation_value_type="none", + enabled_in="", + has_effect_on_gecko_scrollbars=False, + needs_conversion=True, +)} + +${helpers.predefined_type( + "-moz-script-min-size", + "MozScriptMinSize", + "specified::MozScriptMinSize::get_initial_value()", + engines="gecko", + animation_value_type="none", + enabled_in="", + has_effect_on_gecko_scrollbars=False, + gecko_ffi_name="mScriptMinSize", + spec="Internal (not web-exposed)", +)} + +${helpers.predefined_type( + "-x-text-zoom", + "XTextZoom", + "computed::XTextZoom(true)", + engines="gecko", + animation_value_type="none", + enabled_in="", + has_effect_on_gecko_scrollbars=False, + spec="Internal (not web-exposed)", +)} + +% if engine == "gecko": +pub mod system_font { + //! We deal with system fonts here + //! + //! System fonts can only be set as a group via the font shorthand. + //! They resolve at compute time (not parse time -- this lets the + //! browser respond to changes to the OS font settings). + //! + //! While Gecko handles these as a separate property and keyword + //! values on each property indicating that the font should be picked + //! from the -x-system-font property, we avoid this. Instead, + //! each font longhand has a special SystemFont variant which contains + //! the specified system font. When the cascade function (in helpers) + //! detects that a value has a system font, it will resolve it, and + //! cache it on the ComputedValues. After this, it can be just fetched + //! whenever a font longhand on the same element needs the system font. + //! + //! When a longhand property is holding a SystemFont, it's serialized + //! to an empty string as if its value comes from a shorthand with + //! variable reference. We may want to improve this behavior at some + //! point. See also https://github.com/w3c/csswg-drafts/issues/1586. + + use crate::properties::longhands; + use std::hash::{Hash, Hasher}; + use crate::values::computed::{ToComputedValue, Context}; + use crate::values::specified::font::SystemFont; + // ComputedValues are compared at times + // so we need these impls. We don't want to + // add Eq to Number (which contains a float) + // so instead we have an eq impl which skips the + // cached values + impl PartialEq for ComputedSystemFont { + fn eq(&self, other: &Self) -> bool { + self.system_font == other.system_font + } + } + impl Eq for ComputedSystemFont {} + + impl Hash for ComputedSystemFont { + fn hash<H: Hasher>(&self, hasher: &mut H) { + self.system_font.hash(hasher) + } + } + + impl ToComputedValue for SystemFont { + type ComputedValue = ComputedSystemFont; + + fn to_computed_value(&self, cx: &Context) -> Self::ComputedValue { + use crate::gecko_bindings::bindings; + use crate::gecko_bindings::structs::nsFont; + use crate::values::computed::font::FontSize; + use crate::values::specified::font::KeywordInfo; + use crate::values::generics::NonNegative; + use std::mem; + + let mut system = mem::MaybeUninit::<nsFont>::uninit(); + let system = unsafe { + bindings::Gecko_nsFont_InitSystem( + system.as_mut_ptr(), + *self, + cx.style().get_font().gecko(), + cx.device().document() + ); + &mut *system.as_mut_ptr() + }; + let size = NonNegative(cx.maybe_zoom_text(system.size.0)); + let ret = ComputedSystemFont { + font_family: system.family.clone(), + font_size: FontSize { + computed_size: size, + used_size: size, + keyword_info: KeywordInfo::none() + }, + font_weight: system.weight, + font_stretch: system.stretch, + font_style: system.style, + system_font: *self, + }; + unsafe { bindings::Gecko_nsFont_Destroy(system); } + ret + } + + fn from_computed_value(_: &ComputedSystemFont) -> Self { + unreachable!() + } + } + + #[inline] + /// Compute and cache a system font + /// + /// Must be called before attempting to compute a system font + /// specified value + pub fn resolve_system_font(system: SystemFont, context: &mut Context) { + // Checking if context.cached_system_font.is_none() isn't enough, + // if animating from one system font to another the cached system font + // may change + if Some(system) != context.cached_system_font.as_ref().map(|x| x.system_font) { + let computed = system.to_computed_value(context); + context.cached_system_font = Some(computed); + } + } + + #[derive(Clone, Debug)] + pub struct ComputedSystemFont { + % for name in SYSTEM_FONT_LONGHANDS: + pub ${name}: longhands::${name}::computed_value::T, + % endfor + pub system_font: SystemFont, + } + +} +% endif + +${helpers.single_keyword( + "-moz-osx-font-smoothing", + "auto grayscale", + engines="gecko", + gecko_constant_prefix="NS_FONT_SMOOTHING", + gecko_ffi_name="mFont.smoothing", + gecko_pref="layout.css.osx-font-smoothing.enabled", + has_effect_on_gecko_scrollbars=False, + spec="Nonstandard (https://developer.mozilla.org/en-US/docs/Web/CSS/font-smooth)", + animation_value_type="discrete", +)} + +${helpers.predefined_type( + "-moz-font-smoothing-background-color", + "color::MozFontSmoothingBackgroundColor", + "computed::color::MozFontSmoothingBackgroundColor::transparent()", + engines="gecko", + animation_value_type="none", + gecko_ffi_name="mFont.fontSmoothingBackgroundColor", + enabled_in="chrome", + spec="None (Nonstandard internal property)", +)} + +${helpers.predefined_type( + "-moz-min-font-size-ratio", + "Percentage", + "computed::Percentage::hundred()", + engines="gecko", + animation_value_type="none", + enabled_in="ua", + spec="Nonstandard (Internal-only)", +)} |