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LibWeb: Support calc(...) in box-shadow's values of type Length

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The CSS box-shadow property takes 2-4 properties that are `<length>`s,
those being:
  - offset-x
  - offset-y
  - blur-radius
  - spread-radius

Previously these were resolved directly to concrete Lengths at parse
time, but now they will be parsed as LengthStyleValues and/or
CalculatedStyleValues and be stored that way until styles are later
resolved.
This commit is contained in:
FalseHonesty 2023-05-31 16:07:06 -04:00 • committed by Sam Atkins
parent 8873bf5016
commit 110eeb8591
9 changed files with 143 additions and 58 deletions
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43
Userland/Libraries/LibWeb/CSS/StyleValues/ShadowStyleValue.h
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@ -22,17 +22,23 @@ enum class ShadowPlacement {
class ShadowStyleValue final : public StyleValueWithDefaultOperators<ShadowStyleValue> {
public:
static ErrorOr<ValueComparingNonnullRefPtr<ShadowStyleValue>> create(Color color, Length const& offset_x, Length const& offset_y, Length const& blur_radius, Length const& spread_distance, ShadowPlacement placement)
static ErrorOr<ValueComparingNonnullRefPtr<ShadowStyleValue>> create(
Color color,
ValueComparingNonnullRefPtr<StyleValue const> offset_x,
ValueComparingNonnullRefPtr<StyleValue const> offset_y,
ValueComparingNonnullRefPtr<StyleValue const> blur_radius,
ValueComparingNonnullRefPtr<StyleValue const> spread_distance,
ShadowPlacement placement)
{
return adopt_nonnull_ref_or_enomem(new (nothrow) ShadowStyleValue(color, offset_x, offset_y, blur_radius, spread_distance, placement));
return adopt_nonnull_ref_or_enomem(new (nothrow) ShadowStyleValue(color, move(offset_x), move(offset_y), move(blur_radius), move(spread_distance), placement));
}
virtual ~ShadowStyleValue() override = default;
Color color() const { return m_properties.color; }
Length const& offset_x() const { return m_properties.offset_x; }
Length const& offset_y() const { return m_properties.offset_y; }
Length const& blur_radius() const { return m_properties.blur_radius; }
Length const& spread_distance() const { return m_properties.spread_distance; }
ValueComparingNonnullRefPtr<StyleValue const> const& offset_x() const { return m_properties.offset_x; }
ValueComparingNonnullRefPtr<StyleValue const> const& offset_y() const { return m_properties.offset_y; }
ValueComparingNonnullRefPtr<StyleValue const> const& blur_radius() const { return m_properties.blur_radius; }
ValueComparingNonnullRefPtr<StyleValue const> const& spread_distance() const { return m_properties.spread_distance; }
ShadowPlacement placement() const { return m_properties.placement; }
virtual ErrorOr<String> to_string() const override;
@ -40,9 +46,22 @@ public:
bool properties_equal(ShadowStyleValue const& other) const { return m_properties == other.m_properties; }
private:
explicit ShadowStyleValue(Color color, Length const& offset_x, Length const& offset_y, Length const& blur_radius, Length const& spread_distance, ShadowPlacement placement)
ShadowStyleValue(
Color color,
ValueComparingNonnullRefPtr<StyleValue const> offset_x,
ValueComparingNonnullRefPtr<StyleValue const> offset_y,
ValueComparingNonnullRefPtr<StyleValue const> blur_radius,
ValueComparingNonnullRefPtr<StyleValue const> spread_distance,
ShadowPlacement placement)
: StyleValueWithDefaultOperators(Type::Shadow)
, m_properties { .color = color, .offset_x = offset_x, .offset_y = offset_y, .blur_radius = blur_radius, .spread_distance = spread_distance, .placement = placement }
, m_properties {
.color = color,
.offset_x = move(offset_x),
.offset_y = move(offset_y),
.blur_radius = move(blur_radius),
.spread_distance = move(spread_distance),
.placement = placement
}
{
}
@ -50,10 +69,10 @@ private:
struct Properties {
Color color;
Length offset_x;
Length offset_y;
Length blur_radius;
Length spread_distance;
ValueComparingNonnullRefPtr<StyleValue const> offset_x;
ValueComparingNonnullRefPtr<StyleValue const> offset_y;
ValueComparingNonnullRefPtr<StyleValue const> blur_radius;
ValueComparingNonnullRefPtr<StyleValue const> spread_distance;
ShadowPlacement placement;
bool operator==(Properties const&) const = default;
} m_properties;