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LibWeb: Add CSSPixels::nearest_value_for(FloatingPoint)

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This is intended to annotate conversions from unknown floating-point
values to CSSPixels, and make it more obvious the fp value will be
rounded to the nearest fixed-point value.
This commit is contained in:
MacDue 2023-08-26 15:57:31 +01:00 • committed by Alexander Kalenik
parent 360c0eb509
commit 71baa8c31a
28 changed files with 120 additions and 112 deletions
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8
Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
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@ -500,7 +500,7 @@ CSSPixels FormattingContext::tentative_height_for_replaced_element(Box const& bo
//
// (used width) / (intrinsic ratio)
if (computed_height.is_auto() && box.has_preferred_aspect_ratio())
return CSSPixels(m_state.get(box).content_width() / static_cast<double>(box.preferred_aspect_ratio().value()));
return CSSPixels::nearest_value_for(m_state.get(box).content_width() / static_cast<double>(box.preferred_aspect_ratio().value()));
// 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'.
if (computed_height.is_auto() && box.has_natural_height())
@ -1403,7 +1403,7 @@ CSSPixels FormattingContext::calculate_min_content_height(Layout::Box const& box
CSSPixels FormattingContext::calculate_max_content_height(Layout::Box const& box, CSSPixels width) const
{
if (box.has_preferred_aspect_ratio())
return CSSPixels(width / static_cast<double>(*box.preferred_aspect_ratio()));
return CSSPixels::nearest_value_for(width / static_cast<double>(*box.preferred_aspect_ratio()));
if (box.has_natural_height())
return *box.natural_height();
@ -1711,10 +1711,10 @@ CSSPixels FormattingContext::box_baseline(Box const& box) const
return box_state.content_height() + box_state.margin_box_top();
case CSS::VerticalAlign::TextTop:
// TextTop: Align the top of the box with the top of the parent's content area (see 10.6.1).
return CSSPixels(box.computed_values().font_size());
return CSSPixels::nearest_value_for(box.computed_values().font_size());
case CSS::VerticalAlign::TextBottom:
// TextTop: Align the bottom of the box with the bottom of the parent's content area (see 10.6.1).
return box_state.content_height() - CSSPixels(box.containing_block()->font().pixel_metrics().descent * 2);
return box_state.content_height() - CSSPixels::nearest_value_for(box.containing_block()->font().pixel_metrics().descent * 2);
default:
break;
}