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LibWeb: Make CSSPixels and Length use 64-bit (double) floating point
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.
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80 changed files with 298 additions and 299 deletions
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@ -391,7 +391,7 @@ CSSPixels FormattingContext::tentative_width_for_replaced_element(LayoutState co
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// (used height) * (intrinsic ratio)
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if ((computed_height.is_auto() && computed_width.is_auto() && !box.has_intrinsic_width() && box.has_intrinsic_height() && box.has_intrinsic_aspect_ratio())
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|| (computed_width.is_auto() && !computed_height.is_auto() && box.has_intrinsic_aspect_ratio())) {
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return compute_height_for_replaced_element(state, box, available_space) * box.intrinsic_aspect_ratio().value();
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return compute_height_for_replaced_element(state, box, available_space) * static_cast<double>(box.intrinsic_aspect_ratio().value());
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}
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// If 'height' and 'width' both have computed values of 'auto' and the element has an intrinsic ratio but no intrinsic height or width,
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@ -486,7 +486,7 @@ CSSPixels FormattingContext::tentative_height_for_replaced_element(LayoutState c
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//
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// (used width) / (intrinsic ratio)
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if (computed_height.is_auto() && box.has_intrinsic_aspect_ratio())
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return state.get(box).content_width() / box.intrinsic_aspect_ratio().value();
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return state.get(box).content_width() / static_cast<double>(box.intrinsic_aspect_ratio().value());
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// Otherwise, if 'height' has a computed value of 'auto', and the element has an intrinsic height, then that intrinsic height is the used value of 'height'.
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if (computed_height.is_auto() && box.has_intrinsic_height())
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@ -1280,7 +1280,7 @@ CSSPixels FormattingContext::calculate_min_content_height(Layout::Box const& box
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CSSPixels FormattingContext::calculate_max_content_height(Layout::Box const& box, AvailableSize const& available_width) const
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{
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if (box.has_intrinsic_aspect_ratio() && available_width.is_definite())
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return available_width.to_px() / *box.intrinsic_aspect_ratio();
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return available_width.to_px() / static_cast<double>(*box.intrinsic_aspect_ratio());
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if (box.has_intrinsic_height())
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return *box.intrinsic_height();
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