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LibWeb: Make resolution calculable

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No tests unfortunately, because no CSS property we currently support
accepts `<resolution>`.
This commit is contained in:
Sam Atkins 2023-12-30 17:05:23 +00:00 • committed by Andreas Kling
parent e907ad44c3
commit 30dcbc306c
7 changed files with 67 additions and 2 deletions
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39
Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
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@ -42,6 +42,7 @@ static double resolve_value(CalculatedStyleValue::CalculationResult::Value value
[](Frequency const& frequency) { return frequency.to_hertz(); },
[&context](Length const& length) { return length.to_px(*context).to_double(); },
[](Percentage const& percentage) { return percentage.value(); },
[](Resolution const& resolution) { return resolution.to_dots_per_pixel(); },
[](Time const& time) { return time.to_seconds(); });
}
@ -83,6 +84,8 @@ static CalculatedStyleValue::CalculationResult to_resolved_type(CalculatedStyleV
return { Length::make_px(CSSPixels::nearest_value_for(value)) };
case CalculatedStyleValue::ResolvedType::Percentage:
return { Percentage(value) };
case CalculatedStyleValue::ResolvedType::Resolution:
return { Resolution::make_dots_per_pixel(value) };
case CalculatedStyleValue::ResolvedType::Time:
return { Time::make_seconds(value) };
}
@ -144,6 +147,7 @@ Optional<CalculatedStyleValue::ResolvedType> NumericCalculationNode::resolved_ty
[](Frequency const&) { return CalculatedStyleValue::ResolvedType::Frequency; },
[](Length const&) { return CalculatedStyleValue::ResolvedType::Length; },
[](Percentage const&) { return CalculatedStyleValue::ResolvedType::Percentage; },
[](Resolution const&) { return CalculatedStyleValue::ResolvedType::Resolution; },
[](Time const&) { return CalculatedStyleValue::ResolvedType::Time; });
}
@ -178,7 +182,11 @@ Optional<CSSNumericType> NumericCalculationNode::determine_type(PropertyID prope
// the type is «[ "frequency" → 1 ]»
return CSSNumericType { CSSNumericType::BaseType::Frequency, 1 };
},
// FIXME: <resolution>
[](Resolution const&) {
// -> <resolution>
// the type is «[ "resolution" → 1 ]»
return CSSNumericType { CSSNumericType::BaseType::Resolution, 1 };
},
[](Flex const&) {
// -> <flex>
// the type is «[ "flex" → 1 ]»
@ -2115,6 +2123,15 @@ void CalculatedStyleValue::CalculationResult::add_or_subtract_internal(SumOperat
m_value = Length::make_px(this_px - other_px);
}
},
[&](Resolution const& resolution) {
auto this_dots_per_pixel = resolution.to_dots_per_pixel();
// NOTE: <resolution-percentage> is not a type, so we don't have to worry about percentages.
auto other_dots_per_pixel = other.m_value.get<Resolution>().to_dots_per_pixel();
if (op == SumOperation::Add)
m_value = Resolution::make_dots_per_pixel(this_dots_per_pixel + other_dots_per_pixel);
else
m_value = Resolution::make_dots_per_pixel(this_dots_per_pixel - other_dots_per_pixel);
},
[&](Time const& time) {
auto this_seconds = time.to_seconds();
if (other.m_value.has<Time>()) {
@ -2186,6 +2203,9 @@ void CalculatedStyleValue::CalculationResult::multiply_by(CalculationResult cons
[&](Length const& length) {
m_value = Length::make_px(CSSPixels::nearest_value_for(length.to_px(*context) * static_cast<double>(other.m_value.get<Number>().value())));
},
[&](Resolution const& resolution) {
m_value = Resolution::make_dots_per_pixel(resolution.to_dots_per_pixel() * other.m_value.get<Number>().value());
},
[&](Time const& time) {
m_value = Time::make_seconds(time.to_seconds() * other.m_value.get<Number>().value());
},
@ -2221,6 +2241,9 @@ void CalculatedStyleValue::CalculationResult::divide_by(CalculationResult const&
[&](Length const& length) {
m_value = Length::make_px(CSSPixels::nearest_value_for(length.to_px(*context) / static_cast<double>(denominator)));
},
[&](Resolution const& resolution) {
m_value = Resolution::make_dots_per_pixel(resolution.to_dots_per_pixel() / denominator);
},
[&](Time const& time) {
m_value = Time::make_seconds(time.to_seconds() / denominator);
},
@ -2247,6 +2270,9 @@ void CalculatedStyleValue::CalculationResult::negate()
[&](Length const& length) {
m_value = Length { 0 - length.raw_value(), length.type() };
},
[&](Resolution const& resolution) {
m_value = Resolution { 0 - resolution.raw_value(), resolution.type() };
},
[&](Time const& time) {
m_value = Time { 0 - time.raw_value(), time.type() };
},
@ -2274,6 +2300,9 @@ void CalculatedStyleValue::CalculationResult::invert()
[&](Length const& length) {
m_value = Length { 1 / length.raw_value(), length.type() };
},
[&](Resolution const& resolution) {
m_value = Resolution { 1 / resolution.raw_value(), resolution.type() };
},
[&](Time const& time) {
m_value = Time { 1 / time.raw_value(), time.type() };
},
@ -2403,6 +2432,14 @@ Optional<Percentage> CalculatedStyleValue::resolve_percentage() const
return {};
}
Optional<Resolution> CalculatedStyleValue::resolve_resolution() const
{
auto result = m_calculation->resolve({}, {});
if (result.value().has<Resolution>())
return result.value().get<Resolution>();
return {};
}
Optional<Time> CalculatedStyleValue::resolve_time() const
{
auto result = m_calculation->resolve({}, {});