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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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2
Userland/Libraries/LibWeb/HTML/Window.cpp
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@ -1077,7 +1077,7 @@ void Window::scroll(ScrollToOptions const& options)
// 1. If invoked with one argument, follow these substeps:
// 1. Let options be the argument.
auto viewport_rect = top_level_browsing_context.viewport_rect().to_type<float>();
auto viewport_rect = top_level_browsing_context.viewport_rect().to_type<double>().to_type<float>();
// 2. Let x be the value of the left dictionary member of options, if present, or the viewport’s current scroll
// position on the x axis otherwise.