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LibWeb: Convert background-size from Length to LengthPercentage

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Checking these for `auto` is awkward, but separating that will come
later. :^)
This commit is contained in:
Sam Atkins 2022-01-16 20:24:35 +00:00 • committed by Andreas Kling
parent f75e796909
commit f602249ae9
4 changed files with 46 additions and 21 deletions
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4
Userland/Libraries/LibWeb/CSS/ComputedValues.h
View file

@ -49,8 +49,8 @@ struct BackgroundLayerData {
CSS::PositionEdge position_edge_y { CSS::PositionEdge::Top };
CSS::Length position_offset_y { CSS::Length::make_px(0) };
CSS::BackgroundSize size_type { CSS::BackgroundSize::LengthPercentage };
CSS::Length size_x { CSS::Length::make_auto() };
CSS::Length size_y { CSS::Length::make_auto() };
CSS::LengthPercentage size_x { CSS::Length::make_auto() };
CSS::LengthPercentage size_y { CSS::Length::make_auto() };
CSS::Repeat repeat_x { CSS::Repeat::Repeat };
CSS::Repeat repeat_y { CSS::Repeat::Repeat };
};

23
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View file

@ -2940,6 +2940,14 @@ RefPtr<StyleValue> Parser::parse_single_background_size_value(TokenStream<StyleC
return nullptr;
};
auto get_length_percentage = [](StyleValue& style_value) -> Optional<LengthPercentage> {
if (style_value.is_percentage())
return LengthPercentage { style_value.as_percentage().percentage() };
if (style_value.has_length())
return LengthPercentage { style_value.to_length() };
return {};
};
auto maybe_x_value = parse_css_value(tokens.next_token());
if (!maybe_x_value || !property_accepts_value(PropertyID::BackgroundSize, *maybe_x_value))
return error();
@ -2949,13 +2957,20 @@ RefPtr<StyleValue> Parser::parse_single_background_size_value(TokenStream<StyleC
return x_value;
auto maybe_y_value = parse_css_value(tokens.peek_token());
if (!maybe_y_value || !property_accepts_value(PropertyID::BackgroundSize, *maybe_y_value))
return BackgroundSizeStyleValue::create(x_value->to_length(), x_value->to_length());
if (!maybe_y_value || !property_accepts_value(PropertyID::BackgroundSize, *maybe_y_value)) {
auto x_size = get_length_percentage(*x_value);
if (!x_size.has_value())
return error();
return BackgroundSizeStyleValue::create(x_size.value(), x_size.value());
}
tokens.next_token();
auto y_value = maybe_y_value.release_nonnull();
auto x_size = get_length_percentage(*x_value);
auto y_size = get_length_percentage(*y_value);
if (x_value->has_length() && y_value->has_length())
return BackgroundSizeStyleValue::create(x_value->to_length(), y_value->to_length());
if (x_size.has_value() && y_size.has_value())
return BackgroundSizeStyleValue::create(x_size.release_value(), y_size.release_value());
return error();
}

12
Userland/Libraries/LibWeb/CSS/StyleValue.h
View file

@ -499,14 +499,14 @@ private:
// NOTE: This is not used for identifier sizes, like `cover` and `contain`.
class BackgroundSizeStyleValue final : public StyleValue {
public:
static NonnullRefPtr<BackgroundSizeStyleValue> create(Length size_x, Length size_y)
static NonnullRefPtr<BackgroundSizeStyleValue> create(LengthPercentage size_x, LengthPercentage size_y)
{
return adopt_ref(*new BackgroundSizeStyleValue(size_x, size_y));
}
virtual ~BackgroundSizeStyleValue() override { }
Length size_x() const { return m_size_x; }
Length size_y() const { return m_size_y; }
LengthPercentage size_x() const { return m_size_x; }
LengthPercentage size_y() const { return m_size_y; }
virtual String to_string() const override
{
@ -514,15 +514,15 @@ public:
}
private:
BackgroundSizeStyleValue(Length size_x, Length size_y)
BackgroundSizeStyleValue(LengthPercentage size_x, LengthPercentage size_y)
: StyleValue(Type::BackgroundSize)
, m_size_x(size_x)
, m_size_y(size_y)
{
}
Length m_size_x;
Length m_size_y;
LengthPercentage m_size_x;
LengthPercentage m_size_y;
};
class BorderStyleValue final : public StyleValue {