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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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12
Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
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@ -64,12 +64,12 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<MouseEvent>> MouseEvent::create(JS::Realm&
WebIDL::ExceptionOr<JS::NonnullGCPtr<MouseEvent>> MouseEvent::create_from_platform_event(JS::Realm& realm, FlyString const& event_name, CSSPixelPoint offset, CSSPixelPoint client_offset, CSSPixelPoint page_offset, unsigned buttons, unsigned mouse_button)
{
MouseEventInit event_init {};
event_init.offset_x = static_cast<double>(offset.x().value());
event_init.offset_y = static_cast<double>(offset.y().value());
event_init.client_x = static_cast<double>(client_offset.x().value());
event_init.client_y = static_cast<double>(client_offset.y().value());
event_init.page_x = static_cast<double>(page_offset.x().value());
event_init.page_y = static_cast<double>(page_offset.y().value());
event_init.offset_x = offset.x().to_double();
event_init.offset_y = offset.y().to_double();
event_init.client_x = client_offset.x().to_double();
event_init.client_y = client_offset.y().to_double();
event_init.page_x = page_offset.x().to_double();
event_init.page_y = page_offset.y().to_double();
event_init.button = determine_button(mouse_button);
event_init.buttons = buttons;
return MouseEvent::create(realm, event_name, event_init);