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LibWeb: Improvements to font lookup

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Parse out the font-family, font-size and font-weight values from CSS
and use them to perform a kinda-best-effort lookup against the system
font library.

We also now handle standard font names like "sans-serif", "monospace"
and others.
This commit is contained in:
Andreas Kling 2020-12-14 15:56:01 +01:00
parent 861d22838d
commit 08517daa5a
5 changed files with 216 additions and 129 deletions
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7
Libraries/LibWeb/FontCache.h
View file

@ -33,18 +33,19 @@
struct FontSelector {
FlyString family;
FlyString weight;
int size { 0 };
int weight { 0 };
bool operator==(const FontSelector& other) const
{
return family == other.family && weight == other.weight;
return family == other.family && size == other.size && weight == other.weight;
}
};
namespace AK {
template<>
struct Traits<FontSelector> : public GenericTraits<FontSelector> {
static unsigned hash(const FontSelector& key) { return pair_int_hash(key.family.hash(), key.weight.hash()); }
static unsigned hash(const FontSelector& key) { return pair_int_hash(pair_int_hash(key.family.hash(), key.weight), key.size); }
};
}