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LibWeb: Make CSSPixels and Length use 64-bit (double) floating point

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This fixes a plethora of rounding problems on many websites.
In the future, we may want to replace this with fixed-point arithmetic
(bug #18566) for performance (and consistency with other engines),
but in the meantime this makes the web look a bit better. :^)

There's a lot more things that could be converted to doubles, which
would reduce the amount of casting necessary in this patch.
We can do that incrementally, however.
This commit is contained in:
Andreas Kling 2023-05-24 10:50:57 +02:00
parent 30262d7023
commit 655d9d1462
80 changed files with 298 additions and 299 deletions
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8
Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.cpp
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@ -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, radius };
return Gfx::FloatSize { radius.value(), radius.value() };
},
[&](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, radius_b };
return Gfx::FloatSize { radius_a.value(), radius_b.value() };
});
// Handle degenerate cases
@ -187,8 +187,8 @@ Gfx::FloatSize RadialGradientStyleValue::resolve_size(Layout::Node const& node,
void RadialGradientStyleValue::resolve_for_size(Layout::Node const& node, CSSPixelSize paint_size) const
{
CSSPixelRect gradient_box { { 0, 0 }, paint_size };
auto center = m_properties.position.resolved(node, gradient_box).to_type<float>();
auto gradient_size = resolve_size(node, center, gradient_box.to_type<float>());
auto center = m_properties.position.resolved(node, gradient_box).to_type<double>().to_type<float>();
auto gradient_size = resolve_size(node, center, gradient_box.to_type<double>().to_type<float>());
if (m_resolved.has_value() && m_resolved->gradient_size == gradient_size)
return;
m_resolved = ResolvedData {