ladybird/Libraries/LibHTML/CSS/StyleProperties.h
Andreas Kling b9557bf876 LibHTML: Move font loading from LayoutText to StyleProperties
Since LayoutText inherits all of its style information from its parent
Element anyway, it makes more sense to load the font at a higher level.

And since the font depends only on the style and nothing else, this
patch moves font loading (and caching) into StyleProperties. This could
be made a lot smarter to avoid loading the same font many times, etc.
2019-10-06 11:26:34 +02:00

41 lines
1.2 KiB
C++

#pragma once
#include <AK/HashMap.h>
#include <AK/NonnullRefPtr.h>
#include <LibDraw/Font.h>
#include <LibHTML/CSS/StyleValue.h>
class Color;
class StyleProperties : public RefCounted<StyleProperties> {
public:
static NonnullRefPtr<StyleProperties> create() { return adopt(*new StyleProperties); }
template<typename Callback>
inline void for_each_property(Callback callback) const
{
for (auto& it : m_property_values)
callback(it.key, *it.value);
}
void set_property(const String& name, NonnullRefPtr<StyleValue> value);
Optional<NonnullRefPtr<StyleValue>> property(const String& name) const;
Length length_or_fallback(const StringView& property_name, const Length& fallback) const;
String string_or_fallback(const StringView& property_name, const StringView& fallback) const;
Color color_or_fallback(const StringView& property_name, const Document&, Color fallback) const;
const Font& font() const
{
if (!m_font)
load_font();
return *m_font;
}
private:
HashMap<String, NonnullRefPtr<StyleValue>> m_property_values;
void load_font() const;
mutable RefPtr<Font> m_font;
};