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LibWeb: Add CSSPixels::nearest_value_for(FloatingPoint)

Browse source 
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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44
Userland/Libraries/LibWeb/CSS/Length.cpp
View file

@ -61,31 +61,31 @@ CSSPixels Length::font_relative_length_to_px(Length::FontMetrics const& font_met
{
switch (m_type) {
case Type::Em:
return CSSPixels(m_value * font_metrics.font_size.to_double());
return CSSPixels::nearest_value_for(m_value * font_metrics.font_size.to_double());
case Type::Rem:
return CSSPixels(m_value * root_font_metrics.font_size.to_double());
return CSSPixels::nearest_value_for(m_value * root_font_metrics.font_size.to_double());
case Type::Ex:
return CSSPixels(m_value * font_metrics.x_height.to_double());
return CSSPixels::nearest_value_for(m_value * font_metrics.x_height.to_double());
case Type::Rex:
return CSSPixels(m_value * root_font_metrics.x_height.to_double());
return CSSPixels::nearest_value_for(m_value * root_font_metrics.x_height.to_double());
case Type::Cap:
return CSSPixels(m_value * font_metrics.cap_height.to_double());
return CSSPixels::nearest_value_for(m_value * font_metrics.cap_height.to_double());
case Type::Rcap:
return CSSPixels(m_value * root_font_metrics.cap_height.to_double());
return CSSPixels::nearest_value_for(m_value * root_font_metrics.cap_height.to_double());
case Type::Ch:
return CSSPixels(m_value * font_metrics.zero_advance.to_double());
return CSSPixels::nearest_value_for(m_value * font_metrics.zero_advance.to_double());
case Type::Rch:
return CSSPixels(m_value * root_font_metrics.zero_advance.to_double());
return CSSPixels::nearest_value_for(m_value * root_font_metrics.zero_advance.to_double());
case Type::Ic:
// FIXME: Use the "advance measure of the “水” (CJK water ideograph, U+6C34) glyph"
return CSSPixels(m_value * font_metrics.font_size.to_double());
return CSSPixels::nearest_value_for(m_value * font_metrics.font_size.to_double());
case Type::Ric:
// FIXME: Use the "advance measure of the “水” (CJK water ideograph, U+6C34) glyph"
return CSSPixels(m_value * root_font_metrics.font_size.to_double());
return CSSPixels::nearest_value_for(m_value * root_font_metrics.font_size.to_double());
case Type::Lh:
return CSSPixels(m_value * font_metrics.line_height.to_double());
return CSSPixels::nearest_value_for(m_value * font_metrics.line_height.to_double());
case Type::Rlh:
return CSSPixels(m_value * root_font_metrics.line_height.to_double());
return CSSPixels::nearest_value_for(m_value * root_font_metrics.line_height.to_double());
default:
VERIFY_NOT_REACHED();
}
@ -98,34 +98,34 @@ CSSPixels Length::viewport_relative_length_to_px(CSSPixelRect const& viewport_re
case Type::Svw:
case Type::Lvw:
case Type::Dvw:
return CSSPixels(viewport_rect.width() * (m_value / 100));
return CSSPixels::nearest_value_for(viewport_rect.width() * (m_value / 100));
case Type::Vh:
case Type::Svh:
case Type::Lvh:
case Type::Dvh:
return CSSPixels(viewport_rect.height() * (m_value / 100));
return CSSPixels::nearest_value_for(viewport_rect.height() * (m_value / 100));
case Type::Vi:
case Type::Svi:
case Type::Lvi:
case Type::Dvi:
// FIXME: Select the width or height based on which is the inline axis.
return CSSPixels(viewport_rect.width() * (m_value / 100));
return CSSPixels::nearest_value_for(viewport_rect.width() * (m_value / 100));
case Type::Vb:
case Type::Svb:
case Type::Lvb:
case Type::Dvb:
// FIXME: Select the width or height based on which is the block axis.
return CSSPixels(viewport_rect.height() * (m_value / 100));
return CSSPixels::nearest_value_for(viewport_rect.height() * (m_value / 100));
case Type::Vmin:
case Type::Svmin:
case Type::Lvmin:
case Type::Dvmin:
return CSSPixels(min(viewport_rect.width(), viewport_rect.height()) * (m_value / 100));
return CSSPixels::nearest_value_for(min(viewport_rect.width(), viewport_rect.height()) * (m_value / 100));
case Type::Vmax:
case Type::Svmax:
case Type::Lvmax:
case Type::Dvmax:
return CSSPixels(max(viewport_rect.width(), viewport_rect.height()) * (m_value / 100));
return CSSPixels::nearest_value_for(max(viewport_rect.width(), viewport_rect.height()) * (m_value / 100));
default:
VERIFY_NOT_REACHED();
}
@ -138,8 +138,8 @@ Length::ResolutionContext Length::ResolutionContext::for_layout_node(Layout::Nod
VERIFY(root_element->layout_node());
return Length::ResolutionContext {
.viewport_rect = node.browsing_context().viewport_rect(),
.font_metrics = { CSSPixels(node.computed_values().font_size()), node.font().pixel_metrics(), node.line_height() },
.root_font_metrics = { CSSPixels(root_element->layout_node()->computed_values().font_size()), root_element->layout_node()->font().pixel_metrics(), root_element->layout_node()->line_height() },
.font_metrics = { CSSPixels::nearest_value_for(node.computed_values().font_size()), node.font().pixel_metrics(), node.line_height() },
.root_font_metrics = { CSSPixels::nearest_value_for(root_element->layout_node()->computed_values().font_size()), root_element->layout_node()->font().pixel_metrics(), root_element->layout_node()->line_height() },
};
}
@ -168,12 +168,12 @@ CSSPixels Length::to_px(Layout::Node const& layout_node) const
return 0;
FontMetrics font_metrics {
CSSPixels(layout_node.computed_values().font_size()),
CSSPixels::nearest_value_for(layout_node.computed_values().font_size()),
layout_node.font().pixel_metrics(),
layout_node.line_height()
};
FontMetrics root_font_metrics {
CSSPixels(root_element->layout_node()->computed_values().font_size()),
CSSPixels::nearest_value_for(root_element->layout_node()->computed_values().font_size()),
root_element->layout_node()->font().pixel_metrics(),
root_element->layout_node()->line_height()
};

14
Userland/Libraries/LibWeb/CSS/Length.h
View file

@ -185,19 +185,19 @@ public:
constexpr double centimeter_pixels = (inch_pixels / 2.54);
switch (m_type) {
case Type::Cm:
return CSSPixels(m_value * centimeter_pixels); // 1cm = 96px/2.54
return CSSPixels::nearest_value_for(m_value * centimeter_pixels); // 1cm = 96px/2.54
case Type::In:
return CSSPixels(m_value * inch_pixels); // 1in = 2.54 cm = 96px
return CSSPixels::nearest_value_for(m_value * inch_pixels); // 1in = 2.54 cm = 96px
case Type::Px:
return CSSPixels(m_value); // 1px = 1/96th of 1in
return CSSPixels::nearest_value_for(m_value); // 1px = 1/96th of 1in
case Type::Pt:
return CSSPixels(m_value * ((1.0 / 72.0) * inch_pixels)); // 1pt = 1/72th of 1in
return CSSPixels::nearest_value_for(m_value * ((1.0 / 72.0) * inch_pixels)); // 1pt = 1/72th of 1in
case Type::Pc:
return CSSPixels(m_value * ((1.0 / 6.0) * inch_pixels)); // 1pc = 1/6th of 1in
return CSSPixels::nearest_value_for(m_value * ((1.0 / 6.0) * inch_pixels)); // 1pc = 1/6th of 1in
case Type::Mm:
return CSSPixels(m_value * ((1.0 / 10.0) * centimeter_pixels)); // 1mm = 1/10th of 1cm
return CSSPixels::nearest_value_for(m_value * ((1.0 / 10.0) * centimeter_pixels)); // 1mm = 1/10th of 1cm
case Type::Q:
return CSSPixels(m_value * ((1.0 / 40.0) * centimeter_pixels)); // 1Q = 1/40th of 1cm
return CSSPixels::nearest_value_for(m_value * ((1.0 / 40.0) * centimeter_pixels)); // 1Q = 1/40th of 1cm
default:
VERIFY_NOT_REACHED();
}

2
Userland/Libraries/LibWeb/CSS/MediaQuery.cpp
View file

@ -168,7 +168,7 @@ bool MediaFeature::compare(HTML::Window const& window, MediaFeatureValue left, C
auto const& initial_font = window.associated_document().style_computer().initial_font();
Gfx::FontPixelMetrics const& initial_font_metrics = initial_font.pixel_metrics();
Length::FontMetrics font_metrics { CSSPixels(initial_font.presentation_size()), initial_font_metrics, CSSPixels(initial_font_metrics.line_spacing()) };
Length::FontMetrics font_metrics { initial_font.presentation_size(), initial_font_metrics, CSSPixels::nearest_value_for(initial_font_metrics.line_spacing()) };
left_px = left.length().to_px(viewport_rect, font_metrics, font_metrics);
right_px = right.length().to_px(viewport_rect, font_metrics, font_metrics);

2
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View file

@ -1787,7 +1787,7 @@ Optional<Dimension> Parser::parse_dimension(ComponentValue const& component_valu
// FIXME: Disallow quirk when inside a CSS sub-expression (like `calc()`)
// "The <quirky-length> value must not be supported in arguments to CSS expressions other than the rect()
// expression, and must not be supported in the supports() static method of the CSS interface."
return Length::make_px(CSSPixels(numeric_value));
return Length::make_px(CSSPixels::nearest_value_for(numeric_value));
}
}

2
Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
View file

@ -596,7 +596,7 @@ RefPtr<StyleValue const> ResolvedCSSStyleDeclaration::style_value_for_property(L
case PropertyID::Float:
return IdentifierStyleValue::create(to_value_id(layout_node.computed_values().float_()));
case PropertyID::FontSize:
return LengthStyleValue::create(Length::make_px(CSSPixels(layout_node.computed_values().font_size())));
return LengthStyleValue::create(Length::make_px(CSSPixels::nearest_value_for(layout_node.computed_values().font_size())));
case PropertyID::FontVariant: {
auto font_variant = layout_node.computed_values().font_variant();
switch (font_variant) {

10
Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
View file

@ -2036,7 +2036,7 @@ Length::FontMetrics StyleComputer::calculate_root_element_font_metrics(StyleProp
auto root_value = style.property(CSS::PropertyID::FontSize);
auto font_pixel_metrics = style.computed_font().pixel_metrics();
Length::FontMetrics font_metrics { m_default_font_metrics.font_size, font_pixel_metrics, CSSPixels(font_pixel_metrics.line_spacing()) };
Length::FontMetrics font_metrics { m_default_font_metrics.font_size, font_pixel_metrics, CSSPixels::nearest_value_for(font_pixel_metrics.line_spacing()) };
font_metrics.font_size = root_value->as_length().length().to_px(viewport_rect(), font_metrics, font_metrics);
font_metrics.line_height = style.line_height(viewport_rect(), font_metrics, font_metrics);
@ -2197,7 +2197,7 @@ RefPtr<Gfx::Font const> StyleComputer::compute_font_for_style_values(DOM::Elemen
// and smaller may compute the font size to the previous entry in the table.
if (identifier == CSS::ValueID::Smaller || identifier == CSS::ValueID::Larger) {
if (parent_element && parent_element->computed_css_values()) {
font_size_in_px = CSSPixels(parent_element->computed_css_values()->computed_font().pixel_metrics().size);
font_size_in_px = CSSPixels::nearest_value_for(parent_element->computed_css_values()->computed_font().pixel_metrics().size);
}
}
auto const multiplier = absolute_size_mapping.get(identifier).value_or(1.0);
@ -2213,7 +2213,7 @@ RefPtr<Gfx::Font const> StyleComputer::compute_font_for_style_values(DOM::Elemen
Optional<Length> maybe_length;
if (font_size.is_percentage()) {
// Percentages refer to parent element's font size
maybe_length = Length::make_px(CSSPixels(font_size.as_percentage().percentage().as_fraction() * parent_font_size().to_double()));
maybe_length = Length::make_px(CSSPixels::nearest_value_for(font_size.as_percentage().percentage().as_fraction() * parent_font_size().to_double()));
} else if (font_size.is_length()) {
maybe_length = font_size.as_length().length();
@ -2350,7 +2350,7 @@ void StyleComputer::compute_font(StyleProperties& style, DOM::Element const* ele
auto found_font = compute_font_for_style_values(element, pseudo_element, font_family, font_size, font_style, font_weight, font_stretch);
style.set_property(CSS::PropertyID::FontSize, LengthStyleValue::create(CSS::Length::make_px(CSSPixels(found_font->pixel_size()))), nullptr);
style.set_property(CSS::PropertyID::FontSize, LengthStyleValue::create(CSS::Length::make_px(CSSPixels::nearest_value_for(found_font->pixel_size()))), nullptr);
style.set_property(CSS::PropertyID::FontWeight, NumberStyleValue::create(font_weight->to_font_weight()));
style.set_computed_font(found_font.release_nonnull());
@ -2401,7 +2401,7 @@ void StyleComputer::absolutize_values(StyleProperties& style, DOM::Element const
auto line_height_value_slot = style.m_property_values[to_underlying(CSS::PropertyID::LineHeight)].map([](auto& x) -> auto& { return x.style; });
if (line_height_value_slot.has_value() && (*line_height_value_slot)->is_percentage()) {
*line_height_value_slot = LengthStyleValue::create(
Length::make_px(CSSPixels(font_size * static_cast<double>((*line_height_value_slot)->as_percentage().percentage().as_fraction()))));
Length::make_px(CSSPixels::nearest_value_for(font_size * static_cast<double>((*line_height_value_slot)->as_percentage().percentage().as_fraction()))));
}
auto line_height = style.line_height(viewport_rect(), font_metrics, m_root_element_font_metrics);

8
Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
View file

@ -204,7 +204,7 @@ CSSPixels StyleProperties::line_height(Layout::Node const& layout_node) const
auto line_height = property(CSS::PropertyID::LineHeight);
if (line_height->is_identifier() && line_height->to_identifier() == ValueID::Normal)
return CSSPixels(layout_node.font().pixel_metrics().line_spacing());
return CSSPixels::nearest_value_for(layout_node.font().pixel_metrics().line_spacing());
if (line_height->is_length()) {
auto line_height_length = line_height->as_length().length();
@ -226,7 +226,7 @@ CSSPixels StyleProperties::line_height(Layout::Node const& layout_node) const
auto resolved = line_height->as_calculated().resolve_number();
if (!resolved.has_value()) {
dbgln("FIXME: Failed to resolve calc() line-height (number): {}", line_height->as_calculated().to_string());
return CSSPixels(layout_node.font().pixel_metrics().line_spacing());
return CSSPixels::nearest_value_for(layout_node.font().pixel_metrics().line_spacing());
}
return Length(resolved.value(), Length::Type::Em).to_px(layout_node);
}
@ -234,12 +234,12 @@ CSSPixels StyleProperties::line_height(Layout::Node const& layout_node) const
auto resolved = line_height->as_calculated().resolve_length(layout_node);
if (!resolved.has_value()) {
dbgln("FIXME: Failed to resolve calc() line-height: {}", line_height->as_calculated().to_string());
return CSSPixels(layout_node.font().pixel_metrics().line_spacing());
return CSSPixels::nearest_value_for(layout_node.font().pixel_metrics().line_spacing());
}
return resolved->to_px(layout_node);
}
return CSSPixels(layout_node.font().pixel_metrics().line_spacing());
return CSSPixels::nearest_value_for(layout_node.font().pixel_metrics().line_spacing());
}
Optional<int> StyleProperties::z_index() const

6
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
View file

@ -77,7 +77,7 @@ static CalculatedStyleValue::CalculationResult to_resolved_type(CalculatedStyleV
case CalculatedStyleValue::ResolvedType::Frequency:
return { Frequency::make_hertz(value) };
case CalculatedStyleValue::ResolvedType::Length:
return { Length::make_px(CSSPixels(value)) };
return { Length::make_px(CSSPixels::nearest_value_for(value)) };
case CalculatedStyleValue::ResolvedType::Percentage:
return { Percentage(value) };
case CalculatedStyleValue::ResolvedType::Time:
@ -2155,7 +2155,7 @@ void CalculatedStyleValue::CalculationResult::multiply_by(CalculationResult cons
m_value = Frequency::make_hertz(frequency.to_hertz() * other.m_value.get<Number>().value());
},
[&](Length const& length) {
m_value = Length::make_px(CSSPixels(length.to_px(*context) * static_cast<double>(other.m_value.get<Number>().value())));
m_value = Length::make_px(CSSPixels::nearest_value_for(length.to_px(*context) * static_cast<double>(other.m_value.get<Number>().value())));
},
[&](Time const& time) {
m_value = Time::make_seconds(time.to_seconds() * other.m_value.get<Number>().value());
@ -2187,7 +2187,7 @@ void CalculatedStyleValue::CalculationResult::divide_by(CalculationResult const&
m_value = Frequency::make_hertz(frequency.to_hertz() / denominator);
},
[&](Length const& length) {
m_value = Length::make_px(CSSPixels(length.to_px(*context) / static_cast<double>(denominator)));
m_value = Length::make_px(CSSPixels::nearest_value_for(length.to_px(*context) / static_cast<double>(denominator)));
},
[&](Time const& time) {
m_value = Time::make_seconds(time.to_seconds() / denominator);

4
Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.cpp
View file

@ -150,8 +150,8 @@ Gfx::FloatSize RadialGradientStyleValue::resolve_size(Layout::Node const& node,
return Gfx::FloatSize { radius.to_float(), radius.to_float() };
},
[&](EllipseSize const& ellipse_size) {
auto radius_a = ellipse_size.radius_a.resolved(node, CSS::Length::make_px(CSSPixels(size.width()))).to_px(node);
auto radius_b = ellipse_size.radius_b.resolved(node, CSS::Length::make_px(CSSPixels(size.height()))).to_px(node);
auto radius_a = ellipse_size.radius_a.resolved(node, CSS::Length::make_px(CSSPixels::nearest_value_for(size.width()))).to_px(node);
auto radius_b = ellipse_size.radius_b.resolved(node, CSS::Length::make_px(CSSPixels::nearest_value_for(size.height()))).to_px(node);
return Gfx::FloatSize { radius_a.to_float(), radius_b.to_float() };
});

4
Userland/Libraries/LibWeb/DOM/Element.cpp
View file

@ -1085,7 +1085,7 @@ void Element::set_scroll_left(double x)
// 11. Scroll the element to x,scrollTop, with the scroll behavior being "auto".
// FIXME: Implement this in terms of calling "scroll the element".
auto scroll_offset = paintable_box()->scroll_offset();
scroll_offset.set_x(CSSPixels(x));
scroll_offset.set_x(CSSPixels::nearest_value_for(x));
paintable_box()->set_scroll_offset(scroll_offset);
}
@ -1153,7 +1153,7 @@ void Element::set_scroll_top(double y)
// 11. Scroll the element to scrollLeft,y, with the scroll behavior being "auto".
// FIXME: Implement this in terms of calling "scroll the element".
auto scroll_offset = paintable_box()->scroll_offset();
scroll_offset.set_y(CSSPixels(y));
scroll_offset.set_y(CSSPixels::nearest_value_for(y));
paintable_box()->set_scroll_offset(scroll_offset);
}

6
Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
View file

@ -3993,14 +3993,14 @@ static RefPtr<CSS::StyleValue> parse_current_dimension_value(float value, Utf8Vi
{
// 1. If position is past the end of input, then return value as a length.
if (position == input.end())
return CSS::LengthStyleValue::create(CSS::Length::make_px(CSSPixels(value)));
return CSS::LengthStyleValue::create(CSS::Length::make_px(CSSPixels::nearest_value_for(value)));
// 2. If the code point at position within input is U+0025 (%), then return value as a percentage.
if (*position == '%')
return CSS::PercentageStyleValue::create(CSS::Percentage(value));
// 3. Return value as a length.
return CSS::LengthStyleValue::create(CSS::Length::make_px(CSSPixels(value)));
return CSS::LengthStyleValue::create(CSS::Length::make_px(CSSPixels::nearest_value_for(value)));
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#rules-for-parsing-dimension-values
@ -4065,7 +4065,7 @@ RefPtr<CSS::StyleValue> parse_dimension_value(StringView string)
// 4. If position is past the end of input, then return value as a length.
if (position == input.end())
return CSS::LengthStyleValue::create(CSS::Length::make_px(CSSPixels(value)));
return CSS::LengthStyleValue::create(CSS::Length::make_px(CSSPixels::nearest_value_for(value)));
// 5. If the code point at position within input is not an ASCII digit, then break.
if (!is_ascii_digit(*position))

4
Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
View file

@ -1069,7 +1069,7 @@ void BlockFormattingContext::layout_list_item_marker(ListItemBox const& list_ite
marker_state.set_content_width(image_width + default_marker_width);
} else {
auto text_width = marker.font().width(marker.text());
marker_state.set_content_width(image_width + CSSPixels(text_width));
marker_state.set_content_width(image_width + CSSPixels::nearest_value_for(text_width));
}
marker_state.set_content_height(max(image_height, marker.font().pixel_size_rounded_up() + 1));
@ -1084,7 +1084,7 @@ void BlockFormattingContext::layout_list_item_marker(ListItemBox const& list_ite
list_item_state.set_content_width(list_item_state.content_width() - final_marker_width);
}
auto offset_y = max(CSSPixels(0), (CSSPixels(marker.line_height()) - marker_state.content_height()) / 2);
auto offset_y = max(CSSPixels(0), (marker.line_height() - marker_state.content_height()) / 2);
auto space_and_containing_margin = intrusion_by_floats_into_box(list_item_box, offset_y);
marker_state.set_content_offset({ space_and_containing_margin.left - final_marker_width, offset_y });

2
Userland/Libraries/LibWeb/Layout/ButtonBox.cpp
View file

@ -25,7 +25,7 @@ void ButtonBox::prepare_for_replaced_layout()
// value attribute. This is not the case with <button />, which contains
// its contents normally.
if (is<HTML::HTMLInputElement>(dom_node())) {
set_natural_width(CSSPixels(font().width(static_cast<HTML::HTMLInputElement&>(dom_node()).value())));
set_natural_width(CSSPixels::nearest_value_for(font().width(static_cast<HTML::HTMLInputElement&>(dom_node()).value())));
set_natural_height(font().pixel_size_rounded_up());
}
}

12
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
View file

@ -540,15 +540,15 @@ CSS::FlexBasis FlexFormattingContext::used_flex_basis_for_item(FlexItem const& i
CSSPixels FlexFormattingContext::calculate_main_size_from_cross_size_and_aspect_ratio(CSSPixels cross_size, double aspect_ratio) const
{
if (is_row_layout())
return CSSPixels(cross_size * aspect_ratio);
return CSSPixels(cross_size / aspect_ratio);
return CSSPixels::nearest_value_for(cross_size * aspect_ratio);
return CSSPixels::nearest_value_for(cross_size / aspect_ratio);
}
CSSPixels FlexFormattingContext::calculate_cross_size_from_main_size_and_aspect_ratio(CSSPixels main_size, double aspect_ratio) const
{
if (is_row_layout())
return CSSPixels(main_size / aspect_ratio);
return CSSPixels(main_size * aspect_ratio);
return CSSPixels::nearest_value_for(main_size / aspect_ratio);
return CSSPixels::nearest_value_for(main_size * aspect_ratio);
}
// This function takes a size in the main axis and adjusts it according to the aspect ratio of the box
@ -982,7 +982,7 @@ void FlexFormattingContext::resolve_flexible_lengths_for_line(FlexLine& line)
// If the sum of the unfrozen flex items’ flex factors is less than one, multiply the initial free space by this sum.
if (auto sum_of_flex_factor_of_unfrozen_items = line.sum_of_flex_factor_of_unfrozen_items(); sum_of_flex_factor_of_unfrozen_items < 1 && initial_free_space.has_value()) {
auto value = CSSPixels(initial_free_space.value() * sum_of_flex_factor_of_unfrozen_items);
auto value = CSSPixels::nearest_value_for(initial_free_space.value() * sum_of_flex_factor_of_unfrozen_items);
// If the magnitude of this value is less than the magnitude of the remaining free space, use this as the remaining free space.
if (abs(value) < abs(line.remaining_free_space.value()))
line.remaining_free_space = value;
@ -1793,7 +1793,7 @@ CSSPixels FlexFormattingContext::calculate_intrinsic_main_size_of_flex_container
product = flex_line.chosen_flex_fraction * static_cast<double>(item.box->computed_values().flex_grow());
else if (item.desired_flex_fraction < 0)
product = flex_line.chosen_flex_fraction * item.scaled_flex_shrink_factor;
auto result = item.flex_base_size + CSSPixels(product);
auto result = item.flex_base_size + CSSPixels::nearest_value_for(product);
auto const& computed_min_size = this->computed_main_min_size(item.box);
auto const& computed_max_size = this->computed_main_max_size(item.box);

8
Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
View file

@ -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;
}

2
Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
View file

@ -1245,7 +1245,7 @@ void GridFormattingContext::expand_flexible_tracks(AvailableSpace const& availab
for (auto& track : tracks) {
if (track.max_track_sizing_function.is_flexible_length()) {
if (track.max_track_sizing_function.flex_factor() > 1) {
result = max(result, CSSPixels(track.base_size / track.max_track_sizing_function.flex_factor()));
result = max(result, CSSPixels::nearest_value_for(track.base_size / track.max_track_sizing_function.flex_factor()));
} else {
result = max(result, track.base_size);
}

4
Userland/Libraries/LibWeb/Layout/ImageBox.cpp
View file

@ -34,11 +34,11 @@ void ImageBox::prepare_for_replaced_layout()
CSSPixels alt_text_width = 0;
if (!m_cached_alt_text_width.has_value())
m_cached_alt_text_width = CSSPixels(font.width(alt));
m_cached_alt_text_width = CSSPixels::nearest_value_for(font.width(alt));
alt_text_width = m_cached_alt_text_width.value();
set_natural_width(alt_text_width + 16);
set_natural_height(CSSPixels(font.pixel_size()) + 16);
set_natural_height(CSSPixels::nearest_value_for(font.pixel_size()) + 16);
}
if (!has_natural_width() && !has_natural_height()) {

2
Userland/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
View file

@ -180,7 +180,7 @@ Optional<InlineLevelIterator::Item> InlineLevelIterator::next_without_lookahead(
m_text_node_context->is_last_chunk = true;
auto& chunk = chunk_opt.value();
CSSPixels chunk_width = CSSPixels(text_node.font().width(chunk.view) + text_node.font().glyph_spacing());
CSSPixels chunk_width = CSSPixels::nearest_value_for(text_node.font().width(chunk.view) + text_node.font().glyph_spacing());
if (m_text_node_context->do_respect_linebreaks && chunk.has_breaking_newline) {
return Item {

16
Userland/Libraries/LibWeb/Layout/LineBoxFragment.cpp
View file

@ -51,7 +51,7 @@ int LineBoxFragment::text_index_at(CSSPixels x) const
Utf8View view(text());
CSSPixels relative_x = x - absolute_x();
CSSPixels glyph_spacing = CSSPixels(font.glyph_spacing());
CSSPixels glyph_spacing = font.glyph_spacing();
if (relative_x < 0)
return 0;
@ -59,7 +59,7 @@ int LineBoxFragment::text_index_at(CSSPixels x) const
CSSPixels width_so_far = 0;
for (auto it = view.begin(); it != view.end(); ++it) {
auto previous_it = it;
CSSPixels glyph_width = CSSPixels(font.glyph_or_emoji_width(it));
CSSPixels glyph_width = CSSPixels::nearest_value_for(font.glyph_or_emoji_width(it));
if ((width_so_far + glyph_width + glyph_spacing / 2) > relative_x)
return m_start + view.byte_offset_of(previous_it);
@ -105,8 +105,8 @@ CSSPixelRect LineBoxFragment::selection_rect(Gfx::Font const& font) const
auto selection_start_in_this_fragment = max(0, range->start_offset() - m_start);
auto selection_end_in_this_fragment = min(m_length, range->end_offset() - m_start);
auto pixel_distance_to_first_selected_character = CSSPixels(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto pixel_distance_to_first_selected_character = CSSPixels::nearest_value_for(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels::nearest_value_for(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto rect = absolute_rect();
rect.set_x(rect.x() + pixel_distance_to_first_selected_character);
@ -121,8 +121,8 @@ CSSPixelRect LineBoxFragment::selection_rect(Gfx::Font const& font) const
auto selection_start_in_this_fragment = max(0, range->start_offset() - m_start);
auto selection_end_in_this_fragment = m_length;
auto pixel_distance_to_first_selected_character = CSSPixels(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto pixel_distance_to_first_selected_character = CSSPixels::nearest_value_for(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels::nearest_value_for(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto rect = absolute_rect();
rect.set_x(rect.x() + pixel_distance_to_first_selected_character);
@ -137,8 +137,8 @@ CSSPixelRect LineBoxFragment::selection_rect(Gfx::Font const& font) const
auto selection_start_in_this_fragment = 0;
auto selection_end_in_this_fragment = min(range->end_offset() - m_start, m_length);
auto pixel_distance_to_first_selected_character = CSSPixels(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto pixel_distance_to_first_selected_character = CSSPixels::nearest_value_for(font.width(text.substring_view(0, selection_start_in_this_fragment)));
auto pixel_width_of_selection = CSSPixels::nearest_value_for(font.width(text.substring_view(selection_start_in_this_fragment, selection_end_in_this_fragment - selection_start_in_this_fragment))) + 1;
auto rect = absolute_rect();
rect.set_x(rect.x() + pixel_distance_to_first_selected_character);

14
Userland/Libraries/LibWeb/Layout/LineBuilder.cpp
View file

@ -195,10 +195,10 @@ void LineBuilder::update_last_line()
auto& font = m_context.containing_block().font();
auto const line_height = m_context.containing_block().line_height();
auto const font_metrics = font.pixel_metrics();
auto const typographic_height = CSSPixels(font_metrics.ascent + font_metrics.descent);
auto const typographic_height = CSSPixels::nearest_value_for(font_metrics.ascent + font_metrics.descent);
auto const leading = line_height - typographic_height;
auto const half_leading = leading / 2;
return CSSPixels(font_metrics.ascent) + half_leading;
return CSSPixels::nearest_value_for(font_metrics.ascent) + half_leading;
}();
auto line_box_baseline = [&] {
@ -207,7 +207,7 @@ void LineBuilder::update_last_line()
auto const& font = fragment.layout_node().font();
auto const line_height = fragment.layout_node().line_height();
auto const font_metrics = font.pixel_metrics();
auto const typographic_height = CSSPixels(font_metrics.ascent + font_metrics.descent);
auto const typographic_height = CSSPixels::nearest_value_for(font_metrics.ascent + font_metrics.descent);
auto const leading = line_height - typographic_height;
auto const half_leading = leading / 2;
@ -215,7 +215,7 @@ void LineBuilder::update_last_line()
CSSPixels fragment_baseline = 0;
if (fragment.layout_node().is_text_node()) {
fragment_baseline = CSSPixels(font_metrics.ascent) + half_leading;
fragment_baseline = CSSPixels::nearest_value_for(font_metrics.ascent) + half_leading;
} else {
auto const& box = verify_cast<Layout::Box>(fragment.layout_node());
fragment_baseline = m_context.box_baseline(box);
@ -302,11 +302,11 @@ void LineBuilder::update_last_line()
bottom_of_inline_box = (fragment.offset().y() + fragment_box_state.content_height() + fragment_box_state.margin_box_bottom());
} else {
auto font_metrics = fragment.layout_node().font().pixel_metrics();
auto typographic_height = CSSPixels(font_metrics.ascent + font_metrics.descent);
auto typographic_height = CSSPixels::nearest_value_for(font_metrics.ascent + font_metrics.descent);
auto leading = fragment.layout_node().line_height() - typographic_height;
auto half_leading = leading / 2;
top_of_inline_box = (fragment.offset().y() + fragment.baseline() - CSSPixels(font_metrics.ascent) - half_leading);
bottom_of_inline_box = (fragment.offset().y() + fragment.baseline() + CSSPixels(font_metrics.descent) + half_leading);
top_of_inline_box = (fragment.offset().y() + fragment.baseline() - CSSPixels::nearest_value_for(font_metrics.ascent) - half_leading);
bottom_of_inline_box = (fragment.offset().y() + fragment.baseline() + CSSPixels::nearest_value_for(font_metrics.descent) + half_leading);
}
if (auto const* length_percentage = fragment.layout_node().computed_values().vertical_align().get_pointer<CSS::LengthPercentage>()) {
if (length_percentage->is_length())

6
Userland/Libraries/LibWeb/Layout/Node.cpp
View file

@ -300,11 +300,11 @@ static CSSPixels snap_a_length_as_a_border_width(double device_pixels_per_css_pi
// 3. If len is greater than zero, but less than 1 device pixel, round len up to 1 device pixel.
if (device_pixels > 0 && device_pixels < 1)
return CSSPixels(1 / device_pixels_per_css_pixel);
return CSSPixels::nearest_value_for(1 / device_pixels_per_css_pixel);
// 4. If len is greater than 1 device pixel, round it down to the nearest integer number of device pixels.
if (device_pixels > 1)
return CSSPixels(floor(device_pixels) / device_pixels_per_css_pixel);
return CSSPixels::nearest_value_for(floor(device_pixels) / device_pixels_per_css_pixel);
return length;
}
@ -742,7 +742,7 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
// FIXME: Converting to pixels isn't really correct - values should be in "user units"
// https://svgwg.org/svg2-draft/coords.html#TermUserUnits
if (stroke_width->is_number())
computed_values.set_stroke_width(CSS::Length::make_px(CSSPixels(stroke_width->as_number().number())));
computed_values.set_stroke_width(CSS::Length::make_px(CSSPixels::nearest_value_for(stroke_width->as_number().number())));
else if (stroke_width->is_length())
computed_values.set_stroke_width(stroke_width->as_length().length());
else if (stroke_width->is_percentage())

10
Userland/Libraries/LibWeb/Layout/SVGFormattingContext.cpp
View file

@ -86,13 +86,13 @@ static ViewBoxTransform scale_and_align_viewbox_content(SVG::PreserveAspectRatio
case SVG::PreserveAspectRatio::Align::xMidYMid:
case SVG::PreserveAspectRatio::Align::xMidYMax:
// Align the midpoint X value of the element's ‘viewBox’ with the midpoint X value of the SVG viewport.
viewbox_transform.offset.translate_by((svg_box_state.content_width() - CSSPixels(view_box.width * viewbox_transform.scale_factor)) / 2, 0);
viewbox_transform.offset.translate_by((svg_box_state.content_width() - CSSPixels::nearest_value_for(view_box.width * viewbox_transform.scale_factor)) / 2, 0);
break;
case SVG::PreserveAspectRatio::Align::xMaxYMin:
case SVG::PreserveAspectRatio::Align::xMaxYMid:
case SVG::PreserveAspectRatio::Align::xMaxYMax:
// Align the <min-x>+<width> of the element's ‘viewBox’ with the maximum X value of the SVG viewport.
viewbox_transform.offset.translate_by((svg_box_state.content_width() - CSSPixels(view_box.width * viewbox_transform.scale_factor)), 0);
viewbox_transform.offset.translate_by((svg_box_state.content_width() - CSSPixels::nearest_value_for(view_box.width * viewbox_transform.scale_factor)), 0);
break;
default:
VERIFY_NOT_REACHED();
@ -117,13 +117,13 @@ static ViewBoxTransform scale_and_align_viewbox_content(SVG::PreserveAspectRatio
case SVG::PreserveAspectRatio::Align::xMidYMid:
case SVG::PreserveAspectRatio::Align::xMaxYMid:
// Align the midpoint Y value of the element's ‘viewBox’ with the midpoint Y value of the SVG viewport.
viewbox_transform.offset.translate_by(0, (svg_box_state.content_height() - CSSPixels(view_box.height * viewbox_transform.scale_factor)) / 2);
viewbox_transform.offset.translate_by(0, (svg_box_state.content_height() - CSSPixels::nearest_value_for(view_box.height * viewbox_transform.scale_factor)) / 2);
break;
case SVG::PreserveAspectRatio::Align::xMinYMax:
case SVG::PreserveAspectRatio::Align::xMidYMax:
case SVG::PreserveAspectRatio::Align::xMaxYMax:
// Align the <min-y>+<height> of the element's ‘viewBox’ with the maximum Y value of the SVG viewport.
viewbox_transform.offset.translate_by(0, (svg_box_state.content_height() - CSSPixels(view_box.height * viewbox_transform.scale_factor)));
viewbox_transform.offset.translate_by(0, (svg_box_state.content_height() - CSSPixels::nearest_value_for(view_box.height * viewbox_transform.scale_factor)));
break;
default:
VERIFY_NOT_REACHED();
@ -197,7 +197,7 @@ void SVGFormattingContext::run(Box const& box, LayoutMode layout_mode, Available
// Stroke increases the path's size by stroke_width/2 per side.
auto path_bounding_box = path_transform.map(path.bounding_box()).to_type<CSSPixels>();
CSSPixels stroke_width = CSSPixels(static_cast<double>(geometry_box.dom_node().visible_stroke_width()) * viewbox_scale);
CSSPixels stroke_width = CSSPixels::nearest_value_for(static_cast<double>(geometry_box.dom_node().visible_stroke_width()) * viewbox_scale);
path_bounding_box.inflate(stroke_width, stroke_width);
geometry_box_state.set_content_offset(path_bounding_box.top_left());
geometry_box_state.set_content_width(path_bounding_box.width());

22
Userland/Libraries/LibWeb/Layout/TableFormattingContext.cpp
View file

@ -265,11 +265,11 @@ void TableFormattingContext::compute_intrinsic_percentage(size_t max_cell_span)
auto cell_start_rc_index = cell_index<RowOrColumn>(cell);
auto cell_end_rc_index = cell_start_rc_index + cell_span_value;
// 1. Start with the percentage contribution of the cell.
CSSPixels cell_contribution = CSSPixels(cell_percentage_contribution<RowOrColumn>(cell));
CSSPixels cell_contribution = CSSPixels::nearest_value_for(cell_percentage_contribution<RowOrColumn>(cell));
// 2. Subtract the intrinsic percentage width of the column based on cells of span up to N-1 of all columns
// that the cell spans. If this gives a negative result, change it to 0%.
for (auto rc_index = cell_start_rc_index; rc_index < cell_end_rc_index; rc_index++) {
cell_contribution -= CSSPixels(rows_or_columns[rc_index].intrinsic_percentage);
cell_contribution -= CSSPixels::nearest_value_for(rows_or_columns[rc_index].intrinsic_percentage);
cell_contribution = max(cell_contribution, 0);
}
// Compute the sum of the non-spanning max-content sizes of all rows / columns spanned by the cell that have an intrinsic percentage
@ -380,12 +380,12 @@ void TableFormattingContext::compute_table_measures()
auto clamped_diff_to_baseline_min = min(
max(cell_min_size<RowOrColumn>(cell) - baseline_min_content_size - baseline_border_spacing, 0),
baseline_max_content_size - baseline_min_content_size);
cell_min_contribution += CSSPixels(normalized_max_min_diff * clamped_diff_to_baseline_min);
cell_min_contribution += CSSPixels::nearest_value_for(normalized_max_min_diff * clamped_diff_to_baseline_min);
// the product of:
// - the ratio of the max-content size based on cells of span up to N-1 of the column to the baseline max-content size
// - the outer min-content size of the cell minus the baseline max-content size and baseline border spacing, or 0 if this is negative
if (baseline_max_content_size != 0) {
cell_min_contribution += CSSPixels(rows_or_columns[rc_index].max_size / static_cast<double>(baseline_max_content_size))
cell_min_contribution += CSSPixels::nearest_value_for(rows_or_columns[rc_index].max_size / static_cast<double>(baseline_max_content_size))
* max(CSSPixels(0), cell_min_size<RowOrColumn>(cell) - baseline_max_content_size - baseline_border_spacing);
}
@ -396,7 +396,7 @@ void TableFormattingContext::compute_table_measures()
// - the ratio of the max-content size based on cells of span up to N-1 of the column to the baseline max-content size
// - the outer max-content size of the cell minus the baseline max-content size and the baseline border spacing, or 0 if this is negative
if (baseline_max_content_size != 0) {
cell_max_contribution += CSSPixels(rows_or_columns[rc_index].max_size / static_cast<double>(baseline_max_content_size))
cell_max_contribution += CSSPixels::nearest_value_for(rows_or_columns[rc_index].max_size / static_cast<double>(baseline_max_content_size))
* max(CSSPixels(0), cell_max_size<RowOrColumn>(cell) - baseline_max_content_size - baseline_border_spacing);
}
cell_min_contributions_by_rc_index[rc_index].append(cell_min_contribution);
@ -496,7 +496,7 @@ void TableFormattingContext::compute_table_width()
for (auto& cell : m_cells) {
auto const& cell_width = cell.box->computed_values().width();
if (cell_width.is_percentage()) {
adjusted_used_width = CSSPixels(ceil(100 / cell_width.percentage().value() * cell.outer_max_width.to_double()));
adjusted_used_width = CSSPixels::nearest_value_for(ceil(100 / cell_width.percentage().value() * cell.outer_max_width.to_double()));
if (width_of_table_containing_block.is_definite())
used_width = min(max(used_width, adjusted_used_width), width_of_table_containing_block.to_px_or_zero());
else
@ -555,7 +555,7 @@ void TableFormattingContext::assign_columns_width_linear_combination(Vector<CSSP
auto candidate_weight = (available_width - columns_total_used_width) / static_cast<double>(columns_total_candidate_width - columns_total_used_width);
for (size_t i = 0; i < m_columns.size(); ++i) {
auto& column = m_columns[i];
column.used_width = CSSPixels(candidate_weight * candidate_widths[i] + (1 - candidate_weight) * column.used_width);
column.used_width = CSSPixels::nearest_value_for(candidate_weight * candidate_widths[i] + (1 - candidate_weight) * column.used_width);
}
}
@ -576,7 +576,7 @@ bool TableFormattingContext::distribute_excess_width_proportionally_to_base_widt
VERIFY(total_base_width > 0);
for (auto& column : m_columns) {
if (column_filter(column)) {
column.used_width += CSSPixels(excess_width * base_width_getter(column) / static_cast<double>(total_base_width));
column.used_width += CSSPixels::nearest_value_for(excess_width * base_width_getter(column) / static_cast<double>(total_base_width));
}
}
return true;
@ -618,7 +618,7 @@ bool TableFormattingContext::distribute_excess_width_by_intrinsic_percentage(CSS
}
for (auto& column : m_columns) {
if (column_filter(column)) {
column.used_width += CSSPixels(excess_width * column.intrinsic_percentage / total_percentage_width);
column.used_width += CSSPixels::nearest_value_for(excess_width * column.intrinsic_percentage / total_percentage_width);
}
}
return true;
@ -660,7 +660,7 @@ void TableFormattingContext::distribute_width_to_columns()
for (size_t i = 0; i < m_columns.size(); ++i) {
auto& column = m_columns[i];
if (column.has_intrinsic_percentage) {
candidate_widths[i] = max(column.min_size, CSSPixels(column.intrinsic_percentage / 100 * available_width));
candidate_widths[i] = max(column.min_size, CSSPixels::nearest_value_for(column.intrinsic_percentage / 100 * available_width));
}
}
@ -990,7 +990,7 @@ void TableFormattingContext::distribute_height_to_rows()
for (auto& row : m_rows) {
auto weight = row.reference_height / static_cast<double>(sum_reference_height);
auto final_height = m_table_height * weight;
row.final_height = CSSPixels(final_height);
row.final_height = CSSPixels::nearest_value_for(final_height);
}
} else if (rows_with_auto_height.size() > 0) {
// Else, if the table owns any “auto-height” row (a row whose size is only determined by its content size and

4
Userland/Libraries/LibWeb/Painting/BackgroundPainting.cpp
View file

@ -263,7 +263,7 @@ void paint_background(PaintContext& context, Layout::NodeWithStyleAndBoxModelMet
repeat_x = false;
} else {
auto space = fmod(background_positioning_area.width().to_double(), image_rect.width().to_double());
x_step = image_rect.width() + CSSPixels(space / static_cast<double>(whole_images - 1));
x_step = image_rect.width() + CSSPixels::nearest_value_for(space / static_cast<double>(whole_images - 1));
repeat_x = true;
}
break;
@ -294,7 +294,7 @@ void paint_background(PaintContext& context, Layout::NodeWithStyleAndBoxModelMet
repeat_y = false;
} else {
auto space = fmod(background_positioning_area.height().to_float(), image_rect.height().to_float());
y_step = image_rect.height() + CSSPixels(static_cast<double>(space) / static_cast<double>(whole_images - 1));
y_step = image_rect.height() + CSSPixels::nearest_value_for(static_cast<double>(space) / static_cast<double>(whole_images - 1));
repeat_y = true;
}
break;

2
Userland/Libraries/LibWeb/Painting/GradientPainting.cpp
View file

@ -117,7 +117,7 @@ LinearGradientData resolve_linear_gradient_data(Layout::NodeWithStyleAndBoxModel
auto resolved_color_stops = resolve_color_stop_positions(
node, linear_gradient.color_stop_list(), [&](auto const& length_percentage) {
return length_percentage.to_px(node, CSSPixels(gradient_length_px)).to_float() / static_cast<float>(gradient_length_px);
return length_percentage.to_px(node, CSSPixels::nearest_value_for(gradient_length_px)).to_float() / static_cast<float>(gradient_length_px);
},
linear_gradient.is_repeating());

2
Userland/Libraries/LibWeb/Painting/PaintContext.cpp
View file

@ -96,7 +96,7 @@ DevicePixelSize PaintContext::rounded_device_size(CSSPixelSize size) const
CSSPixels PaintContext::scale_to_css_pixels(DevicePixels device_pixels) const
{
return CSSPixels(device_pixels.value() / m_device_pixels_per_css_pixel);
return CSSPixels::nearest_value_for(device_pixels.value() / m_device_pixels_per_css_pixel);
}
CSSPixelPoint PaintContext::scale_to_css_point(DevicePixelPoint point) const

8
Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
View file

@ -258,8 +258,8 @@ void PaintableBox::paint(PaintContext& context, PaintPhase phase) const
auto size_text_rect = border_rect;
size_text_rect.set_y(border_rect.y() + border_rect.height());
size_text_rect.set_top(size_text_rect.top());
size_text_rect.set_width(CSSPixels(font.width(size_text)) + 4);
size_text_rect.set_height(CSSPixels(font.pixel_size()) + 4);
size_text_rect.set_width(CSSPixels::nearest_value_for(font.width(size_text)) + 4);
size_text_rect.set_height(CSSPixels::nearest_value_for(font.pixel_size()) + 4);
auto size_text_device_rect = context.enclosing_device_rect(size_text_rect).to_type<int>();
context.painter().fill_rect(size_text_device_rect, context.palette().color(Gfx::ColorRole::Tooltip));
context.painter().draw_rect(size_text_device_rect, context.palette().threed_shadow1());
@ -503,7 +503,7 @@ static void paint_cursor_if_needed(PaintContext& context, Layout::TextNode const
auto fragment_rect = fragment.absolute_rect();
CSSPixelRect cursor_rect {
fragment_rect.x() + CSSPixels(text_node.font().width(fragment.text().substring_view(0, text_node.browsing_context().cursor_position().offset() - fragment.start()))),
fragment_rect.x() + CSSPixels::nearest_value_for(text_node.font().width(fragment.text().substring_view(0, text_node.browsing_context().cursor_position().offset() - fragment.start()))),
fragment_rect.top(),
1,
fragment_rect.height()
@ -518,7 +518,7 @@ static void paint_text_decoration(PaintContext& context, Gfx::Painter& painter,
{
auto& font = fragment.layout_node().font();
auto fragment_box = fragment.absolute_rect();
CSSPixels glyph_height = CSSPixels(font.pixel_size());
CSSPixels glyph_height = CSSPixels::nearest_value_for(font.pixel_size());
auto baseline = fragment_box.height() / 2 - (glyph_height + 4) / 2 + glyph_height;
auto line_color = text_node.computed_values().text_decoration_color();

12
Userland/Libraries/LibWeb/PixelUnits.h
View file

@ -78,13 +78,21 @@ public:
template<FloatingPoint F>
explicit CSSPixels(F value)
{
*this = nearest_value_for(value);
}
template<FloatingPoint F>
static CSSPixels nearest_value_for(F value)
{
i32 raw_value = 0;
if (!isnan(value))
m_value = AK::clamp_to_int(value * fixed_point_denominator);
raw_value = AK::clamp_to_int(value * fixed_point_denominator);
// Note: The resolution of CSSPixels is 0.015625, so care must be taken when converting
// floats/doubles to CSSPixels as small values (such as scale factors) can underflow to zero,
// or otherwise produce inaccurate results (when scaled back up).
if (m_value == 0 && value != 0)
if (raw_value == 0 && value != 0)
dbgln_if(LIBWEB_CSS_DEBUG, "CSSPixels: Conversion from float or double underflowed to zero");
return from_raw(raw_value);
}
template<Unsigned U>