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c37820b898
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
43 lines
1 KiB
C++
43 lines
1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/HashMap.h>
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#include <AK/String.h>
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#include <LibGfx/Font.h>
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#include <LibGfx/Forward.h>
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struct FontSelector {
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FlyString family;
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int size { 0 };
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int weight { 0 };
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int slope { 0 };
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bool operator==(const FontSelector& other) const
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{
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return family == other.family && size == other.size && weight == other.weight && slope == other.slope;
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}
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};
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namespace AK {
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template<>
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struct Traits<FontSelector> : public GenericTraits<FontSelector> {
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static unsigned hash(const FontSelector& key) { return pair_int_hash(pair_int_hash(key.family.hash(), key.weight), key.size); }
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};
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}
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class FontCache {
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public:
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static FontCache& the();
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RefPtr<Gfx::Font> get(const FontSelector&) const;
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void set(const FontSelector&, NonnullRefPtr<Gfx::Font>);
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private:
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FontCache() = default;
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mutable HashMap<FontSelector, NonnullRefPtr<Gfx::Font>> m_fonts;
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};
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