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Diffstat (limited to 'servo/components/style/gecko/media_features.rs')
| -rw-r--r-- | servo/components/style/gecko/media_features.rs | 933 |
1 files changed, 933 insertions, 0 deletions
diff --git a/servo/components/style/gecko/media_features.rs b/servo/components/style/gecko/media_features.rs new file mode 100644 index 0000000000..8f56f185d2 --- /dev/null +++ b/servo/components/style/gecko/media_features.rs @@ -0,0 +1,933 @@ +/* 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/. */ + +//! Gecko's media feature list and evaluator. + +use crate::gecko_bindings::bindings; +use crate::gecko_bindings::structs; +use crate::gecko_bindings::structs::ScreenColorGamut; +use crate::media_queries::{Device, MediaType}; +use crate::queries::feature::{AllowsRanges, Evaluator, FeatureFlags, QueryFeatureDescription}; +use crate::queries::values::Orientation; +use crate::values::computed::{CSSPixelLength, Context, Ratio, Resolution}; +use app_units::Au; +use euclid::default::Size2D; + +fn device_size(device: &Device) -> Size2D<Au> { + let mut width = 0; + let mut height = 0; + unsafe { + bindings::Gecko_MediaFeatures_GetDeviceSize(device.document(), &mut width, &mut height); + } + Size2D::new(Au(width), Au(height)) +} + +/// https://drafts.csswg.org/mediaqueries-4/#width +fn eval_width(context: &Context) -> CSSPixelLength { + CSSPixelLength::new(context.device().au_viewport_size().width.to_f32_px()) +} + +/// https://drafts.csswg.org/mediaqueries-4/#device-width +fn eval_device_width(context: &Context) -> CSSPixelLength { + CSSPixelLength::new(device_size(context.device()).width.to_f32_px()) +} + +/// https://drafts.csswg.org/mediaqueries-4/#height +fn eval_height(context: &Context) -> CSSPixelLength { + CSSPixelLength::new(context.device().au_viewport_size().height.to_f32_px()) +} + +/// https://drafts.csswg.org/mediaqueries-4/#device-height +fn eval_device_height(context: &Context) -> CSSPixelLength { + CSSPixelLength::new(device_size(context.device()).height.to_f32_px()) +} + +fn eval_aspect_ratio_for<F>(context: &Context, get_size: F) -> Ratio +where + F: FnOnce(&Device) -> Size2D<Au>, +{ + let size = get_size(context.device()); + Ratio::new(size.width.0 as f32, size.height.0 as f32) +} + +/// https://drafts.csswg.org/mediaqueries-4/#aspect-ratio +fn eval_aspect_ratio(context: &Context) -> Ratio { + eval_aspect_ratio_for(context, Device::au_viewport_size) +} + +/// https://drafts.csswg.org/mediaqueries-4/#device-aspect-ratio +fn eval_device_aspect_ratio(context: &Context) -> Ratio { + eval_aspect_ratio_for(context, device_size) +} + +/// https://compat.spec.whatwg.org/#css-media-queries-webkit-device-pixel-ratio +fn eval_device_pixel_ratio(context: &Context) -> f32 { + eval_resolution(context).dppx() +} + +/// https://drafts.csswg.org/mediaqueries-4/#orientation +fn eval_orientation(context: &Context, value: Option<Orientation>) -> bool { + Orientation::eval(context.device().au_viewport_size(), value) +} + +/// FIXME: There's no spec for `-moz-device-orientation`. +fn eval_device_orientation(context: &Context, value: Option<Orientation>) -> bool { + Orientation::eval(device_size(context.device()), value) +} + +/// Values for the display-mode media feature. +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, ToCss)] +#[repr(u8)] +#[allow(missing_docs)] +pub enum DisplayMode { + Browser = 0, + MinimalUi, + Standalone, + Fullscreen, +} + +/// https://w3c.github.io/manifest/#the-display-mode-media-feature +fn eval_display_mode(context: &Context, query_value: Option<DisplayMode>) -> bool { + match query_value { + Some(v) => { + v == unsafe { + bindings::Gecko_MediaFeatures_GetDisplayMode(context.device().document()) + } + }, + None => true, + } +} + +/// https://drafts.csswg.org/mediaqueries-4/#grid +fn eval_grid(_: &Context) -> bool { + // Gecko doesn't support grid devices (e.g., ttys), so the 'grid' feature + // is always 0. + false +} + +/// https://compat.spec.whatwg.org/#css-media-queries-webkit-transform-3d +fn eval_transform_3d(_: &Context) -> bool { + true +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum Scan { + Progressive, + Interlace, +} + +/// https://drafts.csswg.org/mediaqueries-4/#scan +fn eval_scan(_: &Context, _: Option<Scan>) -> bool { + // Since Gecko doesn't support the 'tv' media type, the 'scan' feature never + // matches. + false +} + +/// https://drafts.csswg.org/mediaqueries-4/#color +fn eval_color(context: &Context) -> u32 { + unsafe { bindings::Gecko_MediaFeatures_GetColorDepth(context.device().document()) } +} + +/// https://drafts.csswg.org/mediaqueries-4/#color-index +fn eval_color_index(_: &Context) -> u32 { + // We should return zero if the device does not use a color lookup table. + 0 +} + +/// https://drafts.csswg.org/mediaqueries-4/#monochrome +fn eval_monochrome(context: &Context) -> u32 { + // For color devices we should return 0. + unsafe { bindings::Gecko_MediaFeatures_GetMonochromeBitsPerPixel(context.device().document()) } +} + +/// Values for the color-gamut media feature. +/// This implements PartialOrd so that lower values will correctly match +/// higher capabilities. +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, PartialOrd, ToCss)] +#[repr(u8)] +enum ColorGamut { + /// The sRGB gamut. + Srgb, + /// The gamut specified by the Display P3 Color Space. + P3, + /// The gamut specified by the ITU-R Recommendation BT.2020 Color Space. + Rec2020, +} + +/// https://drafts.csswg.org/mediaqueries-4/#color-gamut +fn eval_color_gamut(context: &Context, query_value: Option<ColorGamut>) -> bool { + let query_value = match query_value { + Some(v) => v, + None => return false, + }; + let color_gamut = + unsafe { bindings::Gecko_MediaFeatures_ColorGamut(context.device().document()) }; + // Match if our color gamut is at least as wide as the query value + query_value <= + match color_gamut { + // EndGuard_ is not a valid color gamut, so the default color-gamut is used. + ScreenColorGamut::Srgb | ScreenColorGamut::EndGuard_ => ColorGamut::Srgb, + ScreenColorGamut::P3 => ColorGamut::P3, + ScreenColorGamut::Rec2020 => ColorGamut::Rec2020, + } +} + +/// https://drafts.csswg.org/mediaqueries-4/#resolution +fn eval_resolution(context: &Context) -> Resolution { + let resolution_dppx = + unsafe { bindings::Gecko_MediaFeatures_GetResolution(context.device().document()) }; + Resolution::from_dppx(resolution_dppx) +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum PrefersReducedMotion { + NoPreference, + Reduce, +} + +/// Values for the prefers-color-scheme media feature. +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, ToCss)] +#[repr(u8)] +#[allow(missing_docs)] +pub enum PrefersColorScheme { + Light, + Dark, +} + +/// Values for the dynamic-range and video-dynamic-range media features. +/// https://drafts.csswg.org/mediaqueries-5/#dynamic-range +/// This implements PartialOrd so that lower values will correctly match +/// higher capabilities. +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, PartialOrd, ToCss)] +#[repr(u8)] +#[allow(missing_docs)] +pub enum DynamicRange { + Standard, + High, +} + +/// https://drafts.csswg.org/mediaqueries-5/#prefers-reduced-motion +fn eval_prefers_reduced_motion( + context: &Context, + query_value: Option<PrefersReducedMotion>, +) -> bool { + let prefers_reduced = + unsafe { bindings::Gecko_MediaFeatures_PrefersReducedMotion(context.device().document()) }; + let query_value = match query_value { + Some(v) => v, + None => return prefers_reduced, + }; + + match query_value { + PrefersReducedMotion::NoPreference => !prefers_reduced, + PrefersReducedMotion::Reduce => prefers_reduced, + } +} + +/// Possible values for prefers-contrast media query. +/// https://drafts.csswg.org/mediaqueries-5/#prefers-contrast +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, ToCss)] +#[repr(u8)] +pub enum PrefersContrast { + /// More contrast is preferred. + More, + /// Low contrast is preferred. + Less, + /// Custom (not more, not less). + Custom, + /// The default value if neither high or low contrast is enabled. + NoPreference, +} + +/// https://drafts.csswg.org/mediaqueries-5/#prefers-contrast +fn eval_prefers_contrast(context: &Context, query_value: Option<PrefersContrast>) -> bool { + let prefers_contrast = + unsafe { bindings::Gecko_MediaFeatures_PrefersContrast(context.device().document()) }; + match query_value { + Some(v) => v == prefers_contrast, + None => prefers_contrast != PrefersContrast::NoPreference, + } +} + +/// Possible values for the forced-colors media query. +/// https://drafts.csswg.org/mediaqueries-5/#forced-colors +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, PartialEq, ToCss)] +#[repr(u8)] +pub enum ForcedColors { + /// Page colors are not being forced. + None, + /// Page colors are being forced. + Active, +} + +/// https://drafts.csswg.org/mediaqueries-5/#forced-colors +fn eval_forced_colors(context: &Context, query_value: Option<ForcedColors>) -> bool { + let forced = !context.device().use_document_colors(); + match query_value { + Some(query_value) => forced == (query_value == ForcedColors::Active), + None => forced, + } +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum OverflowBlock { + None, + Scroll, + OptionalPaged, + Paged, +} + +/// https://drafts.csswg.org/mediaqueries-4/#mf-overflow-block +fn eval_overflow_block(context: &Context, query_value: Option<OverflowBlock>) -> bool { + // For the time being, assume that printing (including previews) + // is the only time when we paginate, and we are otherwise always + // scrolling. This is true at the moment in Firefox, but may need + // updating in the future (e.g., ebook readers built with Stylo, a + // billboard mode that doesn't support overflow at all). + // + // If this ever changes, don't forget to change eval_overflow_inline too. + let scrolling = context.device().media_type() != MediaType::print(); + let query_value = match query_value { + Some(v) => v, + None => return true, + }; + + match query_value { + OverflowBlock::None | OverflowBlock::OptionalPaged => false, + OverflowBlock::Scroll => scrolling, + OverflowBlock::Paged => !scrolling, + } +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum OverflowInline { + None, + Scroll, +} + +/// https://drafts.csswg.org/mediaqueries-4/#mf-overflow-inline +fn eval_overflow_inline(context: &Context, query_value: Option<OverflowInline>) -> bool { + // See the note in eval_overflow_block. + let scrolling = context.device().media_type() != MediaType::print(); + let query_value = match query_value { + Some(v) => v, + None => return scrolling, + }; + + match query_value { + OverflowInline::None => !scrolling, + OverflowInline::Scroll => scrolling, + } +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum Update { + None, + Slow, + Fast, +} + +/// https://drafts.csswg.org/mediaqueries-4/#update +fn eval_update(context: &Context, query_value: Option<Update>) -> bool { + // This has similar caveats to those described in eval_overflow_block. + // For now, we report that print (incl. print media simulation, + // which can in fact update but is limited to the developer tools) + // is `update: none` and that all other contexts are `update: fast`, + // which may not be true for future platforms, like e-ink devices. + let can_update = context.device().media_type() != MediaType::print(); + let query_value = match query_value { + Some(v) => v, + None => return can_update, + }; + + match query_value { + Update::None => !can_update, + Update::Slow => false, + Update::Fast => can_update, + } +} + +fn do_eval_prefers_color_scheme( + context: &Context, + use_content: bool, + query_value: Option<PrefersColorScheme>, +) -> bool { + let prefers_color_scheme = unsafe { + bindings::Gecko_MediaFeatures_PrefersColorScheme(context.device().document(), use_content) + }; + match query_value { + Some(v) => prefers_color_scheme == v, + None => true, + } +} + +/// https://drafts.csswg.org/mediaqueries-5/#prefers-color-scheme +fn eval_prefers_color_scheme(context: &Context, query_value: Option<PrefersColorScheme>) -> bool { + do_eval_prefers_color_scheme(context, /* use_content = */ false, query_value) +} + +fn eval_content_prefers_color_scheme( + context: &Context, + query_value: Option<PrefersColorScheme>, +) -> bool { + do_eval_prefers_color_scheme(context, /* use_content = */ true, query_value) +} + +/// https://drafts.csswg.org/mediaqueries-5/#dynamic-range +fn eval_dynamic_range(context: &Context, query_value: Option<DynamicRange>) -> bool { + let dynamic_range = + unsafe { bindings::Gecko_MediaFeatures_DynamicRange(context.device().document()) }; + match query_value { + Some(v) => dynamic_range >= v, + None => false, + } +} +/// https://drafts.csswg.org/mediaqueries-5/#video-dynamic-range +fn eval_video_dynamic_range(context: &Context, query_value: Option<DynamicRange>) -> bool { + let dynamic_range = + unsafe { bindings::Gecko_MediaFeatures_VideoDynamicRange(context.device().document()) }; + match query_value { + Some(v) => dynamic_range >= v, + None => false, + } +} + +bitflags! { + /// https://drafts.csswg.org/mediaqueries-4/#mf-interaction + struct PointerCapabilities: u8 { + const COARSE = structs::PointerCapabilities_Coarse; + const FINE = structs::PointerCapabilities_Fine; + const HOVER = structs::PointerCapabilities_Hover; + } +} + +fn primary_pointer_capabilities(context: &Context) -> PointerCapabilities { + PointerCapabilities::from_bits_truncate(unsafe { + bindings::Gecko_MediaFeatures_PrimaryPointerCapabilities(context.device().document()) + }) +} + +fn all_pointer_capabilities(context: &Context) -> PointerCapabilities { + PointerCapabilities::from_bits_truncate(unsafe { + bindings::Gecko_MediaFeatures_AllPointerCapabilities(context.device().document()) + }) +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum Pointer { + None, + Coarse, + Fine, +} + +fn eval_pointer_capabilities( + query_value: Option<Pointer>, + pointer_capabilities: PointerCapabilities, +) -> bool { + let query_value = match query_value { + Some(v) => v, + None => return !pointer_capabilities.is_empty(), + }; + + match query_value { + Pointer::None => pointer_capabilities.is_empty(), + Pointer::Coarse => pointer_capabilities.intersects(PointerCapabilities::COARSE), + Pointer::Fine => pointer_capabilities.intersects(PointerCapabilities::FINE), + } +} + +/// https://drafts.csswg.org/mediaqueries-4/#pointer +fn eval_pointer(context: &Context, query_value: Option<Pointer>) -> bool { + eval_pointer_capabilities(query_value, primary_pointer_capabilities(context)) +} + +/// https://drafts.csswg.org/mediaqueries-4/#descdef-media-any-pointer +fn eval_any_pointer(context: &Context, query_value: Option<Pointer>) -> bool { + eval_pointer_capabilities(query_value, all_pointer_capabilities(context)) +} + +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +enum Hover { + None, + Hover, +} + +fn eval_hover_capabilities( + query_value: Option<Hover>, + pointer_capabilities: PointerCapabilities, +) -> bool { + let can_hover = pointer_capabilities.intersects(PointerCapabilities::HOVER); + let query_value = match query_value { + Some(v) => v, + None => return can_hover, + }; + + match query_value { + Hover::None => !can_hover, + Hover::Hover => can_hover, + } +} + +/// https://drafts.csswg.org/mediaqueries-4/#hover +fn eval_hover(context: &Context, query_value: Option<Hover>) -> bool { + eval_hover_capabilities(query_value, primary_pointer_capabilities(context)) +} + +/// https://drafts.csswg.org/mediaqueries-4/#descdef-media-any-hover +fn eval_any_hover(context: &Context, query_value: Option<Hover>) -> bool { + eval_hover_capabilities(query_value, all_pointer_capabilities(context)) +} + +fn eval_moz_is_glyph(context: &Context) -> bool { + context.device().document().mIsSVGGlyphsDocument() +} + +fn eval_moz_print_preview(context: &Context) -> bool { + let is_print_preview = context.device().is_print_preview(); + if is_print_preview { + debug_assert_eq!(context.device().media_type(), MediaType::print()); + } + is_print_preview +} + +fn eval_moz_non_native_content_theme(context: &Context) -> bool { + unsafe { bindings::Gecko_MediaFeatures_ShouldAvoidNativeTheme(context.device().document()) } +} + +fn eval_moz_is_resource_document(context: &Context) -> bool { + unsafe { bindings::Gecko_MediaFeatures_IsResourceDocument(context.device().document()) } +} + +/// Allows front-end CSS to discern platform via media queries. +#[derive(Clone, Copy, Debug, FromPrimitive, Parse, ToCss)] +#[repr(u8)] +pub enum Platform { + /// Matches any Android version. + Android, + /// For our purposes here, "linux" is just "gtk" (so unix-but-not-mac). + /// There's no need for our front-end code to differentiate between those + /// platforms and they already use the "linux" string elsewhere (e.g., + /// toolkit/themes/linux). + Linux, + /// Matches any macOS version. + Macos, + /// Matches any Windows version. + Windows, + /// Matches only Windows 7. + WindowsWin7, + /// Matches only Windows 8. + WindowsWin8, + /// Matches windows 10 and actually matches windows 11 too, as of right now. + WindowsWin10, +} + +fn eval_moz_platform(_: &Context, query_value: Option<Platform>) -> bool { + let query_value = match query_value { + Some(v) => v, + None => return false, + }; + + unsafe { bindings::Gecko_MediaFeatures_MatchesPlatform(query_value) } +} + +fn eval_moz_windows_non_native_menus(_: &Context) -> bool { + unsafe { bindings::Gecko_MediaFeatures_WindowsNonNativeMenus() } +} + +fn eval_moz_overlay_scrollbars(context: &Context) -> bool { + unsafe { bindings::Gecko_MediaFeatures_UseOverlayScrollbars(context.device().document()) } +} + +fn get_lnf_int(int_id: i32) -> i32 { + unsafe { bindings::Gecko_GetLookAndFeelInt(int_id) } +} + +fn get_lnf_int_as_bool(int_id: i32) -> bool { + get_lnf_int(int_id) != 0 +} + +fn get_scrollbar_start_backward(int_id: i32) -> bool { + (get_lnf_int(int_id) & bindings::LookAndFeel_eScrollArrow_StartBackward as i32) != 0 +} + +fn get_scrollbar_start_forward(int_id: i32) -> bool { + (get_lnf_int(int_id) & bindings::LookAndFeel_eScrollArrow_StartForward as i32) != 0 +} + +fn get_scrollbar_end_backward(int_id: i32) -> bool { + (get_lnf_int(int_id) & bindings::LookAndFeel_eScrollArrow_EndBackward as i32) != 0 +} + +fn get_scrollbar_end_forward(int_id: i32) -> bool { + (get_lnf_int(int_id) & bindings::LookAndFeel_eScrollArrow_EndForward as i32) != 0 +} + +macro_rules! lnf_int_feature { + ($feature_name:expr, $int_id:ident, $get_value:ident) => {{ + fn __eval(_: &Context) -> bool { + $get_value(bindings::LookAndFeel_IntID::$int_id as i32) + } + + feature!( + $feature_name, + AllowsRanges::No, + Evaluator::BoolInteger(__eval), + FeatureFlags::CHROME_AND_UA_ONLY, + ) + }}; + ($feature_name:expr, $int_id:ident) => {{ + lnf_int_feature!($feature_name, $int_id, get_lnf_int_as_bool) + }}; +} + +/// bool pref-based features are an slightly less convenient to start using +/// version of @supports -moz-bool-pref, but with some benefits, mainly that +/// they can support dynamic changes, and don't require a pref lookup every time +/// they're used. +/// +/// In order to use them you need to make sure that the pref defined as a static +/// pref, with `rust: true`. The feature name needs to be defined in +/// `StaticAtoms.py` just like the others. In order to support dynamic changes, +/// you also need to add them to kMediaQueryPrefs in nsXPLookAndFeel.cpp +#[allow(unused)] +macro_rules! bool_pref_feature { + ($feature_name:expr, $pref:tt) => {{ + fn __eval(_: &Context) -> bool { + static_prefs::pref!($pref) + } + + feature!( + $feature_name, + AllowsRanges::No, + Evaluator::BoolInteger(__eval), + FeatureFlags::CHROME_AND_UA_ONLY, + ) + }}; +} + +/// Adding new media features requires (1) adding the new feature to this +/// array, with appropriate entries (and potentially any new code needed +/// to support new types in these entries and (2) ensuring that either +/// nsPresContext::MediaFeatureValuesChanged is called when the value that +/// would be returned by the evaluator function could change. +pub static MEDIA_FEATURES: [QueryFeatureDescription; 64] = [ + feature!( + atom!("width"), + AllowsRanges::Yes, + Evaluator::Length(eval_width), + FeatureFlags::empty(), + ), + feature!( + atom!("height"), + AllowsRanges::Yes, + Evaluator::Length(eval_height), + FeatureFlags::empty(), + ), + feature!( + atom!("aspect-ratio"), + AllowsRanges::Yes, + Evaluator::NumberRatio(eval_aspect_ratio), + FeatureFlags::empty(), + ), + feature!( + atom!("orientation"), + AllowsRanges::No, + keyword_evaluator!(eval_orientation, Orientation), + FeatureFlags::empty(), + ), + feature!( + atom!("device-width"), + AllowsRanges::Yes, + Evaluator::Length(eval_device_width), + FeatureFlags::empty(), + ), + feature!( + atom!("device-height"), + AllowsRanges::Yes, + Evaluator::Length(eval_device_height), + FeatureFlags::empty(), + ), + feature!( + atom!("device-aspect-ratio"), + AllowsRanges::Yes, + Evaluator::NumberRatio(eval_device_aspect_ratio), + FeatureFlags::empty(), + ), + feature!( + atom!("-moz-device-orientation"), + AllowsRanges::No, + keyword_evaluator!(eval_device_orientation, Orientation), + FeatureFlags::empty(), + ), + // Webkit extensions that we support for de-facto web compatibility. + // -webkit-{min|max}-device-pixel-ratio (controlled with its own pref): + feature!( + atom!("device-pixel-ratio"), + AllowsRanges::Yes, + Evaluator::Float(eval_device_pixel_ratio), + FeatureFlags::WEBKIT_PREFIX, + ), + // -webkit-transform-3d. + feature!( + atom!("transform-3d"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_transform_3d), + FeatureFlags::WEBKIT_PREFIX, + ), + feature!( + atom!("-moz-device-pixel-ratio"), + AllowsRanges::Yes, + Evaluator::Float(eval_device_pixel_ratio), + FeatureFlags::empty(), + ), + feature!( + atom!("resolution"), + AllowsRanges::Yes, + Evaluator::Resolution(eval_resolution), + FeatureFlags::empty(), + ), + feature!( + atom!("display-mode"), + AllowsRanges::No, + keyword_evaluator!(eval_display_mode, DisplayMode), + FeatureFlags::empty(), + ), + feature!( + atom!("grid"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_grid), + FeatureFlags::empty(), + ), + feature!( + atom!("scan"), + AllowsRanges::No, + keyword_evaluator!(eval_scan, Scan), + FeatureFlags::empty(), + ), + feature!( + atom!("color"), + AllowsRanges::Yes, + Evaluator::Integer(eval_color), + FeatureFlags::empty(), + ), + feature!( + atom!("color-index"), + AllowsRanges::Yes, + Evaluator::Integer(eval_color_index), + FeatureFlags::empty(), + ), + feature!( + atom!("monochrome"), + AllowsRanges::Yes, + Evaluator::Integer(eval_monochrome), + FeatureFlags::empty(), + ), + feature!( + atom!("color-gamut"), + AllowsRanges::No, + keyword_evaluator!(eval_color_gamut, ColorGamut), + FeatureFlags::empty(), + ), + feature!( + atom!("prefers-reduced-motion"), + AllowsRanges::No, + keyword_evaluator!(eval_prefers_reduced_motion, PrefersReducedMotion), + FeatureFlags::empty(), + ), + feature!( + atom!("prefers-contrast"), + AllowsRanges::No, + keyword_evaluator!(eval_prefers_contrast, PrefersContrast), + // Note: by default this is only enabled in browser chrome and + // ua. It can be enabled on the web via the + // layout.css.prefers-contrast.enabled preference. See + // disabed_by_pref in media_feature_expression.rs for how that + // is done. + FeatureFlags::empty(), + ), + feature!( + atom!("forced-colors"), + AllowsRanges::No, + keyword_evaluator!(eval_forced_colors, ForcedColors), + FeatureFlags::empty(), + ), + feature!( + atom!("overflow-block"), + AllowsRanges::No, + keyword_evaluator!(eval_overflow_block, OverflowBlock), + FeatureFlags::empty(), + ), + feature!( + atom!("overflow-inline"), + AllowsRanges::No, + keyword_evaluator!(eval_overflow_inline, OverflowInline), + FeatureFlags::empty(), + ), + feature!( + atom!("update"), + AllowsRanges::No, + keyword_evaluator!(eval_update, Update), + FeatureFlags::empty(), + ), + feature!( + atom!("prefers-color-scheme"), + AllowsRanges::No, + keyword_evaluator!(eval_prefers_color_scheme, PrefersColorScheme), + FeatureFlags::empty(), + ), + feature!( + atom!("dynamic-range"), + AllowsRanges::No, + keyword_evaluator!(eval_dynamic_range, DynamicRange), + FeatureFlags::empty(), + ), + feature!( + atom!("video-dynamic-range"), + AllowsRanges::No, + keyword_evaluator!(eval_video_dynamic_range, DynamicRange), + FeatureFlags::empty(), + ), + // Evaluates to the preferred color scheme for content. Only useful in + // chrome context, where the chrome color-scheme and the content + // color-scheme might differ. + feature!( + atom!("-moz-content-prefers-color-scheme"), + AllowsRanges::No, + keyword_evaluator!(eval_content_prefers_color_scheme, PrefersColorScheme), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("pointer"), + AllowsRanges::No, + keyword_evaluator!(eval_pointer, Pointer), + FeatureFlags::empty(), + ), + feature!( + atom!("any-pointer"), + AllowsRanges::No, + keyword_evaluator!(eval_any_pointer, Pointer), + FeatureFlags::empty(), + ), + feature!( + atom!("hover"), + AllowsRanges::No, + keyword_evaluator!(eval_hover, Hover), + FeatureFlags::empty(), + ), + feature!( + atom!("any-hover"), + AllowsRanges::No, + keyword_evaluator!(eval_any_hover, Hover), + FeatureFlags::empty(), + ), + // Internal -moz-is-glyph media feature: applies only inside SVG glyphs. + // Internal because it is really only useful in the user agent anyway + // and therefore not worth standardizing. + feature!( + atom!("-moz-is-glyph"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_moz_is_glyph), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("-moz-is-resource-document"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_moz_is_resource_document), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("-moz-platform"), + AllowsRanges::No, + keyword_evaluator!(eval_moz_platform, Platform), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("-moz-print-preview"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_moz_print_preview), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("-moz-non-native-content-theme"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_moz_non_native_content_theme), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("-moz-windows-non-native-menus"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_moz_windows_non_native_menus), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + feature!( + atom!("-moz-overlay-scrollbars"), + AllowsRanges::No, + Evaluator::BoolInteger(eval_moz_overlay_scrollbars), + FeatureFlags::CHROME_AND_UA_ONLY, + ), + lnf_int_feature!( + atom!("-moz-scrollbar-start-backward"), + ScrollArrowStyle, + get_scrollbar_start_backward + ), + lnf_int_feature!( + atom!("-moz-scrollbar-start-forward"), + ScrollArrowStyle, + get_scrollbar_start_forward + ), + lnf_int_feature!( + atom!("-moz-scrollbar-end-backward"), + ScrollArrowStyle, + get_scrollbar_end_backward + ), + lnf_int_feature!( + atom!("-moz-scrollbar-end-forward"), + ScrollArrowStyle, + get_scrollbar_end_forward + ), + lnf_int_feature!(atom!("-moz-menubar-drag"), MenuBarDrag), + lnf_int_feature!(atom!("-moz-windows-default-theme"), WindowsDefaultTheme), + lnf_int_feature!(atom!("-moz-mac-graphite-theme"), MacGraphiteTheme), + lnf_int_feature!(atom!("-moz-mac-big-sur-theme"), MacBigSurTheme), + lnf_int_feature!(atom!("-moz-mac-rtl"), MacRTL), + lnf_int_feature!( + atom!("-moz-windows-accent-color-in-titlebar"), + WindowsAccentColorInTitlebar + ), + lnf_int_feature!(atom!("-moz-windows-compositor"), DWMCompositor), + lnf_int_feature!(atom!("-moz-windows-classic"), WindowsClassic), + lnf_int_feature!(atom!("-moz-windows-glass"), WindowsGlass), + lnf_int_feature!(atom!("-moz-swipe-animation-enabled"), SwipeAnimationEnabled), + lnf_int_feature!(atom!("-moz-gtk-csd-available"), GTKCSDAvailable), + lnf_int_feature!(atom!("-moz-gtk-csd-minimize-button"), GTKCSDMinimizeButton), + lnf_int_feature!(atom!("-moz-gtk-csd-maximize-button"), GTKCSDMaximizeButton), + lnf_int_feature!(atom!("-moz-gtk-csd-close-button"), GTKCSDCloseButton), + lnf_int_feature!( + atom!("-moz-gtk-csd-reversed-placement"), + GTKCSDReversedPlacement + ), + lnf_int_feature!(atom!("-moz-system-dark-theme"), SystemUsesDarkTheme), + lnf_int_feature!(atom!("-moz-panel-animations"), PanelAnimations), + bool_pref_feature!( + atom!("-moz-box-flexbox-emulation"), + "layout.css.moz-box-flexbox-emulation.enabled" + ), + // media query for MathML Core's implementation of maction/semantics + bool_pref_feature!( + atom!("-moz-mathml-core-maction-and-semantics"), + "mathml.legacy_maction_and_semantics_implementations.disabled" + ), + // media query for MathML Core's implementation of ms + bool_pref_feature!( + atom!("-moz-mathml-core-ms"), + "mathml.ms_lquote_rquote_attributes.disabled" + ), +]; |