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LibWeb: Remove default Length constructor and add make_auto()/make_px()

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To prepare for adding an undefined/empty state for Length, let's first
move away from Length() creating an auto value.
This commit is contained in:
Andreas Kling 2020-06-24 11:08:46 +02:00
parent 26eef65017
commit 5744dd43c5
7 changed files with 60 additions and 58 deletions
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4
Libraries/LibWeb/CSS/Length.h
View file

@ -40,7 +40,6 @@ public:
Rem,
};
Length() { }
Length(int value, Type type)
: m_type(type)
, m_value(value)
@ -52,6 +51,9 @@ public:
{
}
static Length make_auto() { return Length(0, Type::Auto); }
static Length make_px(float value) { return Length(value, Type::Px); }
bool is_auto() const { return m_type == Type::Auto; }
bool is_absolute() const { return m_type == Type::Px; }
bool is_relative() const { return m_type == Type::Em || m_type == Type::Rem; }

8
Libraries/LibWeb/CSS/LengthBox.h
View file

@ -31,10 +31,10 @@
namespace Web {
struct LengthBox {
Length top;
Length right;
Length bottom;
Length left;
Length top { Length::make_auto() };
Length right { Length::make_auto() };
Length bottom { Length::make_auto() };
Length left { Length::make_auto() };
};
}

2
Libraries/LibWeb/CSS/StyleProperties.cpp
View file

@ -179,7 +179,7 @@ void StyleProperties::load_font() const
float StyleProperties::line_height(const LayoutNode& layout_node) const
{
auto line_height_length = length_or_fallback(CSS::PropertyID::LineHeight, {});
auto line_height_length = length_or_fallback(CSS::PropertyID::LineHeight, Length::make_auto());
if (line_height_length.is_absolute())
return (float)line_height_length.to_px(layout_node);
return (float)font().glyph_height() * 1.4f;

4
Libraries/LibWeb/CSS/StyleValue.h
View file

@ -155,7 +155,7 @@ public:
bool is_position() const { return type() == Type::Position; }
virtual String to_string() const = 0;
virtual Length to_length() const { return {}; }
virtual Length to_length() const { return Length::make_auto(); }
virtual Color to_color(const Document&) const { return {}; }
virtual bool is_auto() const { return false; }
@ -225,7 +225,7 @@ public:
Length to_length(float reference) const { return Length((m_percentage / 100.0f) * reference, Length::Type::Px); }
private:
virtual Length to_length() const override { return {}; }
virtual Length to_length() const override { return Length::make_auto(); }
virtual bool is_auto() const override { return false; }
explicit PercentageStyleValue(float percentage)