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LibWeb: Plumb calculated StyleValues into CSS::Length

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This is a bit hackish, but this way the existance of the calc()
becomes transparent to the user who just wants a Length and doesn't
care where it came from.
This commit is contained in:
Tobias Christiansen 2021-06-12 00:03:15 +02:00 • committed by Ali Mohammad Pur
parent 328afa32c6
commit 20667dfff5
4 changed files with 20 additions and 1 deletions
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11
Userland/Libraries/LibWeb/CSS/Length.h
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@ -16,6 +16,7 @@ public:
enum class Type {
Undefined,
Percentage,
Calculated,
Auto,
Cm,
In,
@ -54,6 +55,8 @@ public:
return fallback_for_undefined;
if (is_percentage())
return make_px(raw_value() / 100.0f * reference_for_percent);
if (is_calculated())
return {};
if (is_relative())
return make_px(to_px(layout_node));
return *this;
@ -71,8 +74,9 @@ public:
bool is_undefined_or_auto() const { return m_type == Type::Undefined || m_type == Type::Auto; }
bool is_undefined() const { return m_type == Type::Undefined; }
bool is_percentage() const { return m_type == Type::Percentage; }
bool is_percentage() const { return m_type == Type::Percentage || m_type == Type::Calculated; }
bool is_auto() const { return m_type == Type::Auto; }
bool is_calculated() const { return m_type == Type::Calculated; }
bool is_absolute() const
{
@ -122,6 +126,7 @@ public:
return m_value * ((1.0f / 40.0f) * centimeter_pixels); // 1Q = 1/40th of 1cm
case Type::Undefined:
case Type::Percentage:
case Type::Calculated:
default:
VERIFY_NOT_REACHED();
}
@ -144,6 +149,8 @@ public:
return !(*this == other);
}
void set_calculated_style(CalculatedStyleValue* value) { m_calculated_style = value; }
private:
float relative_length_to_px(const Layout::Node&) const;
@ -151,6 +158,8 @@ private:
Type m_type { Type::Undefined };
float m_value { 0 };
CalculatedStyleValue* m_calculated_style { nullptr };
};
}