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LibWeb+WebContent: Forbid access to underlying type of CSSPixels

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Although DistinctNumeric, which is supposed to abstract the underlying
type, was used to represent CSSPixels, we have a whole bunch of places
in the layout code that assume CSSPixels::value() returns a
floating-point type. This assumption makes it difficult to replace the
underlying type in CSSPixels with a non-floating type.

To make it easier to transition CSSPixels to fixed-point math, one step
we can take is to prevent access to the underlying type using value()
and instead use explicit conversions with the to_float(), to_double(),
and to_int() methods.
This commit is contained in:
Aliaksandr Kalenik 2023-06-12 21:37:35 +03:00 • committed by Andreas Kling
parent 5a54c686a7
commit 147c3b3d97
43 changed files with 340 additions and 220 deletions
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2
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
View file

@ -30,7 +30,7 @@ static double resolve_value(CalculatedStyleValue::CalculationResult::Value value
[](Number const& number) { return number.value(); },
[](Angle const& angle) { return angle.to_degrees(); },
[](Frequency const& frequency) { return frequency.to_hertz(); },
[&context](Length const& length) { return length.to_px(*context).value(); },
[&context](Length const& length) { return length.to_px(*context).to_double(); },
[](Percentage const& percentage) { return percentage.value(); },
[](Time const& time) { return time.to_seconds(); });
};

8
Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.cpp
View file

@ -18,7 +18,7 @@ float Filter::Blur::resolved_radius(Layout::Node const& node) const
// Default value when omitted is 0px.
auto sigma = 0;
if (radius.has_value())
sigma = radius->to_px(node).value();
sigma = radius->to_px(node).to_int();
// Note: The radius/sigma of the blur needs to be doubled for LibGfx's blur functions.
return sigma * 2;
}
@ -28,9 +28,9 @@ Filter::DropShadow::Resolved Filter::DropShadow::resolved(Layout::Node const& no
// The default value for omitted values is missing length values set to 0
// and the missing used color is taken from the color property.
return Resolved {
offset_x.to_px(node).value(),
offset_y.to_px(node).value(),
radius.has_value() ? radius->to_px(node).value() : 0.0,
offset_x.to_px(node).to_double(),
offset_y.to_px(node).to_double(),
radius.has_value() ? radius->to_px(node).to_double() : 0.0,
color.has_value() ? *color : node.computed_values().color()
};
}

2
Userland/Libraries/LibWeb/CSS/StyleValues/LinearGradientStyleValue.cpp
View file

@ -66,7 +66,7 @@ bool LinearGradientStyleValue::equals(StyleValue const& other_) const
float LinearGradientStyleValue::angle_degrees(CSSPixelSize gradient_size) const
{
auto corner_angle_degrees = [&] {
return atan2(gradient_size.height().value(), gradient_size.width().value()) * 180 / AK::Pi<double>;
return atan2(gradient_size.height().to_double(), gradient_size.width().to_double()) * 180 / AK::Pi<double>;
};
return m_properties.direction.visit(
[&](SideOrCorner side_or_corner) {

4
Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.cpp
View file

@ -146,12 +146,12 @@ Gfx::FloatSize RadialGradientStyleValue::resolve_size(Layout::Node const& node,
},
[&](CircleSize const& circle_size) {
auto radius = circle_size.radius.to_px(node);
return Gfx::FloatSize { radius.value(), radius.value() };
return Gfx::FloatSize { radius.to_float(), radius.to_float() };
},
[&](EllipseSize const& ellipse_size) {
auto radius_a = ellipse_size.radius_a.resolved(node, CSS::Length::make_px(size.width())).to_px(node);
auto radius_b = ellipse_size.radius_b.resolved(node, CSS::Length::make_px(size.height())).to_px(node);
return Gfx::FloatSize { radius_a.value(), radius_b.value() };
return Gfx::FloatSize { radius_a.to_float(), radius_b.to_float() };
});
// Handle degenerate cases