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LibWeb: Convert width/height and min-/max- versions to LengthPercentage

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A lot of this is quite ugly, but it should only be so until I remove
Length::Type::Percentage entirely. (Which should happen later in this
PR, otherwise, yell at me!) For now, a lot of things have to be
resolved twice, first from a LengthPercentage to a Length, and then
from a Length to a pixel one.
This commit is contained in:
Sam Atkins 2022-01-19 16:19:43 +00:00 • committed by Andreas Kling
parent cb0cce5cdc
commit dc681913e8
12 changed files with 276 additions and 194 deletions
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47
Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
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@ -47,28 +47,55 @@ Optional<NonnullRefPtr<StyleValue>> StyleProperties::property(CSS::PropertyID pr
return it->value;
}
Length StyleProperties::length_or_fallback(CSS::PropertyID id, const Length& fallback) const
Length StyleProperties::length_or_fallback(CSS::PropertyID id, Length const& fallback) const
{
auto value = property(id);
if (!value.has_value())
auto maybe_value = property(id);
if (!maybe_value.has_value())
return fallback;
auto& value = maybe_value.value();
if (value.value()->is_calculated()) {
if (value->is_calculated()) {
Length length = Length(0, Length::Type::Calculated);
length.set_calculated_style(&value.value()->as_calculated());
length.set_calculated_style(&value->as_calculated());
return length;
}
return value.value()->to_length();
if (value->has_length())
return value->to_length();
return fallback;
}
LengthPercentage StyleProperties::length_percentage_or_fallback(CSS::PropertyID id, LengthPercentage const& fallback) const
{
auto maybe_value = property(id);
if (!maybe_value.has_value())
return fallback;
auto& value = maybe_value.value();
if (value->is_calculated()) {
// FIXME: Handle percentages here
Length length = Length(0, Length::Type::Calculated);
length.set_calculated_style(&value->as_calculated());
return length;
}
if (value->is_percentage())
return value->as_percentage().percentage();
if (value->has_length())
return value->to_length();
return fallback;
}
LengthBox StyleProperties::length_box(CSS::PropertyID left_id, CSS::PropertyID top_id, CSS::PropertyID right_id, CSS::PropertyID bottom_id, const CSS::Length& default_value) const
{
LengthBox box;
box.left = length_or_fallback(left_id, default_value);
box.top = length_or_fallback(top_id, default_value);
box.right = length_or_fallback(right_id, default_value);
box.bottom = length_or_fallback(bottom_id, default_value);
box.left = length_percentage_or_fallback(left_id, default_value);
box.top = length_percentage_or_fallback(top_id, default_value);
box.right = length_percentage_or_fallback(right_id, default_value);
box.bottom = length_percentage_or_fallback(bottom_id, default_value);
return box;
}