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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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4
Userland/Libraries/LibWeb/Layout/SVGGeometryBox.cpp
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@ -43,8 +43,8 @@ Optional<Gfx::AffineTransform> SVGGeometryBox::layout_transform() const
// If the transform (or path) results in a empty box we can't display this.
if (original_bounding_box.is_empty())
return {};
auto scaled_width = paintable_box()->content_width().value();
auto scaled_height = paintable_box()->content_height().value();
auto scaled_width = paintable_box()->content_width().to_double();
auto scaled_height = paintable_box()->content_height().to_double();
scaling = min(scaled_width / static_cast<double>(original_bounding_box.width()), scaled_height / static_cast<double>(original_bounding_box.height()));
auto scaled_bounding_box = original_bounding_box.scaled(scaling, scaling);
paint_offset = (paintable_box()->absolute_rect().location() - svg_box->paintable_box()->absolute_rect().location()).to_type<double>().to_type<float>() - scaled_bounding_box.location();