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Auto merge of #16096 - stshine:die-modify-style-die, r=emilio
Use Servo-specific pseudo elements for anonymous box and text <!-- Please describe your changes on the following line: --> Use some fake pseudo elements to style servo-specific boxes in servo. Also, Since for nested inline elements non-inheritable properties are properly stored in the inline context of an inline fragment, so get rid of them on the style using empty pseudo to do cascading. --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #5625 (github issue number if applicable). <!-- Either: --> - [ ] There are tests for these changes OR - [X] These changes do not require tests because refactoring <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/16096) <!-- Reviewable:end -->
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commit
449758ef5d
9 changed files with 126 additions and 259 deletions
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@ -2398,96 +2398,6 @@ pub fn apply_declarations<'a, F, I>(device: &Device,
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style
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}
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/// Modifies the style for an anonymous flow so it resets all its non-inherited
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/// style structs, and set their borders and outlines to zero.
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///
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/// Also, it gets a new display value, which is honored except when it's
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/// `inline`.
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#[cfg(feature = "servo")]
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pub fn modify_style_for_anonymous_flow(style: &mut Arc<ComputedValues>,
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new_display_value: longhands::display::computed_value::T) {
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// The 'align-self' property needs some special treatment since
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// its value depends on the 'align-items' value of its parent.
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% if "align-items" in data.longhands_by_name:
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use computed_values::align_self::T as align_self;
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use computed_values::align_items::T as align_items;
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let self_align =
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match style.position.align_items {
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align_items::stretch => align_self::stretch,
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align_items::baseline => align_self::baseline,
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align_items::flex_start => align_self::flex_start,
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align_items::flex_end => align_self::flex_end,
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align_items::center => align_self::center,
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};
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% endif
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let inital_values = &*INITIAL_SERVO_VALUES;
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let mut style = Arc::make_mut(style);
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% for style_struct in data.active_style_structs():
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% if not style_struct.inherited:
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style.${style_struct.ident} = inital_values.clone_${style_struct.name_lower}();
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% endif
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% endfor
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% if "align-items" in data.longhands_by_name:
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let position = Arc::make_mut(&mut style.position);
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position.align_self = self_align;
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% endif
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if new_display_value != longhands::display::computed_value::T::inline {
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let new_box = Arc::make_mut(&mut style.box_);
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new_box.display = new_display_value;
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}
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let border = Arc::make_mut(&mut style.border);
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% for side in ["top", "right", "bottom", "left"]:
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// Like calling to_computed_value, which wouldn't type check.
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border.border_${side}_width = Au(0);
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% endfor
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// Initial value of outline-style is always none for anonymous box.
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let outline = Arc::make_mut(&mut style.outline);
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outline.outline_width = Au(0);
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}
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/// Alters the given style to accommodate replaced content. This is called in
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/// flow construction. It handles cases like:
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///
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/// <div style="position: absolute">foo bar baz</div>
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///
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/// (in which `foo`, `bar`, and `baz` must not be absolutely-positioned) and
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/// cases like `<sup>Foo</sup>` (in which the `vertical-align: top` style of
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/// `sup` must not propagate down into `Foo`).
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///
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/// FIXME(#5625, pcwalton): It would probably be cleaner and faster to do this
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/// in the cascade.
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#[cfg(feature = "servo")]
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#[inline]
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pub fn modify_style_for_replaced_content(style: &mut Arc<ComputedValues>) {
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// Reset `position` to handle cases like `<div style="position: absolute">foo bar baz</div>`.
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if style.box_.display != longhands::display::computed_value::T::inline {
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let mut style = Arc::make_mut(style);
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Arc::make_mut(&mut style.box_).display = longhands::display::computed_value::T::inline;
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Arc::make_mut(&mut style.box_).position =
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longhands::position::computed_value::T::static_;
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}
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// Reset `vertical-align` to handle cases like `<sup>foo</sup>`.
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if style.box_.vertical_align != longhands::vertical_align::computed_value::T::baseline {
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let mut style = Arc::make_mut(style);
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Arc::make_mut(&mut style.box_).vertical_align =
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longhands::vertical_align::computed_value::T::baseline
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}
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// Reset margins.
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if style.margin.margin_top != computed::LengthOrPercentageOrAuto::Length(Au(0)) ||
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style.margin.margin_left != computed::LengthOrPercentageOrAuto::Length(Au(0)) ||
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style.margin.margin_bottom != computed::LengthOrPercentageOrAuto::Length(Au(0)) ||
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style.margin.margin_right != computed::LengthOrPercentageOrAuto::Length(Au(0)) {
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let mut style = Arc::make_mut(style);
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let margin = Arc::make_mut(&mut style.margin);
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margin.margin_top = computed::LengthOrPercentageOrAuto::Length(Au(0));
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margin.margin_left = computed::LengthOrPercentageOrAuto::Length(Au(0));
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margin.margin_bottom = computed::LengthOrPercentageOrAuto::Length(Au(0));
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margin.margin_right = computed::LengthOrPercentageOrAuto::Length(Au(0));
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}
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}
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/// Adjusts borders as appropriate to account for a fragment's status as the
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/// first or last fragment within the range of an element.
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///
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@ -2544,65 +2454,6 @@ pub fn modify_border_style_for_inline_sides(style: &mut Arc<ComputedValues>,
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}
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}
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/// Adjusts the `position` property as necessary for the outer fragment wrapper
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/// of an inline-block.
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#[cfg(feature = "servo")]
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#[inline]
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pub fn modify_style_for_outer_inline_block_fragment(style: &mut Arc<ComputedValues>) {
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let mut style = Arc::make_mut(style);
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let box_style = Arc::make_mut(&mut style.box_);
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box_style.position = longhands::position::computed_value::T::static_
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}
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/// Adjusts the `position` and `padding` properties as necessary to account for
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/// text.
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///
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/// Text is never directly relatively positioned; it's always contained within
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/// an element that is itself relatively positioned.
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#[cfg(feature = "servo")]
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#[inline]
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pub fn modify_style_for_text(style: &mut Arc<ComputedValues>) {
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if style.box_.position == longhands::position::computed_value::T::relative {
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// We leave the `position` property set to `relative` so that we'll still establish a
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// containing block if needed. But we reset all position offsets to `auto`.
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let mut style = Arc::make_mut(style);
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let mut position = Arc::make_mut(&mut style.position);
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position.top = computed::LengthOrPercentageOrAuto::Auto;
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position.right = computed::LengthOrPercentageOrAuto::Auto;
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position.bottom = computed::LengthOrPercentageOrAuto::Auto;
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position.left = computed::LengthOrPercentageOrAuto::Auto;
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}
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if style.padding.padding_top != computed::LengthOrPercentage::Length(Au(0)) ||
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style.padding.padding_right != computed::LengthOrPercentage::Length(Au(0)) ||
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style.padding.padding_bottom != computed::LengthOrPercentage::Length(Au(0)) ||
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style.padding.padding_left != computed::LengthOrPercentage::Length(Au(0)) {
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let mut style = Arc::make_mut(style);
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let mut padding = Arc::make_mut(&mut style.padding);
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padding.padding_top = computed::LengthOrPercentage::Length(Au(0));
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padding.padding_right = computed::LengthOrPercentage::Length(Au(0));
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padding.padding_bottom = computed::LengthOrPercentage::Length(Au(0));
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padding.padding_left = computed::LengthOrPercentage::Length(Au(0));
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}
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if style.effects.opacity != 1.0 {
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let mut style = Arc::make_mut(style);
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let mut effects = Arc::make_mut(&mut style.effects);
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effects.opacity = 1.0;
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}
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}
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/// Adjusts the `clip` property so that an inline absolute hypothetical fragment
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/// doesn't clip its children.
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#[cfg(feature = "servo")]
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pub fn modify_style_for_inline_absolute_hypothetical_fragment(style: &mut Arc<ComputedValues>) {
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if !style.get_effects().clip.is_auto() {
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let mut style = Arc::make_mut(style);
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let effects_style = Arc::make_mut(&mut style.effects);
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effects_style.clip = Either::auto()
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}
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}
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#[macro_export]
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macro_rules! css_properties_accessors {
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($macro_name: ident) => {
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