126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
// Copyright (C) 2014 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Utility module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#pragma once
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#ifndef NAZARA_FONT_HPP
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#define NAZARA_FONT_HPP
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#include <Nazara/Prerequesites.hpp>
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#include <Nazara/Core/NonCopyable.hpp>
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#include <Nazara/Core/ResourceRef.hpp>
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#include <Nazara/Core/ResourceLoader.hpp>
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#include <Nazara/Utility/AbstractAtlas.hpp>
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#include <memory>
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#include <unordered_map>
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struct NAZARA_API NzFontParams
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{
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bool IsValid() const;
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};
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class NzFont;
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class NzFontData;
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struct NzFontGlyph;
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using NzFontConstRef = NzResourceRef<const NzFont>;
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using NzFontLoader = NzResourceLoader<NzFont, NzFontParams>;
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using NzFontRef = NzResourceRef<NzFont>;
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class NAZARA_API NzFont : public NzResource, NzAbstractAtlas::Listener, NzNonCopyable
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{
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friend NzFontLoader;
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public:
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struct Glyph;
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struct SizeInfo;
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NzFont();
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NzFont(NzFont&& font) = default;
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~NzFont();
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void ClearGlyphCache();
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void ClearKerningCache();
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void ClearSizeInfoCache();
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bool Create(NzFontData* data);
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void Destroy();
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bool ExtractGlyph(unsigned int characterSize, char32_t character, nzUInt32 style, NzFontGlyph* glyph) const;
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const NzAbstractAtlas* GetAtlas() const;
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unsigned int GetCachedGlyphCount(unsigned int characterSize, nzUInt32 style) const;
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unsigned int GetCachedGlyphCount() const;
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NzString GetFamilyName() const;
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int GetKerning(unsigned int characterSize, char32_t first, char32_t second) const;
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const Glyph& GetGlyph(unsigned int characterSize, nzUInt32 style, char32_t character) const;
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unsigned int GetGlyphBorder() const;
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unsigned int GetMinimumStepSize() const;
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const SizeInfo& GetSizeInfo(unsigned int characterSize) const;
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NzString GetStyleName() const;
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bool IsValid() const;
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bool Precache(unsigned int characterSize, nzUInt32 style, char32_t character) const;
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bool Precache(unsigned int characterSize, nzUInt32 style, const NzString& characterSet) const;
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// Open
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bool OpenFromFile(const NzString& filePath, const NzFontParams& params = NzFontParams());
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bool OpenFromMemory(const void* data, std::size_t size, const NzFontParams& params = NzFontParams());
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bool OpenFromStream(NzInputStream& stream, const NzFontParams& params = NzFontParams());
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void SetAtlas(std::shared_ptr<NzAbstractAtlas> atlas);
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void SetGlyphBorder(unsigned int borderSize);
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void SetMinimumStepSize(unsigned int minimumSizeStep);
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NzFont& operator=(NzFont&& font) = default;
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enum ModicationCode
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{
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ModificationCode_GlyphCacheCleared,
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ModificationCode_KerningCacheCleared,
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ModificationCode_SizeInfoCacheCleared
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};
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struct Glyph
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{
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NzRecti aabb;
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NzRectui atlasRect;
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bool requireFauxBold;
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bool requireFauxItalic;
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bool flipped;
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bool valid;
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int advance;
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unsigned int layerIndex;
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};
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struct SizeInfo
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{
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unsigned int lineHeight;
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float underlinePosition;
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float underlineThickness;
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};
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private:
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using GlyphMap = std::unordered_map<char32_t, Glyph>;
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nzUInt64 ComputeKey(unsigned int characterSize, nzUInt32 style) const;
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bool OnAtlasCleared(const NzAbstractAtlas* atlas, void* userdata) override;
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void OnAtlasReleased(const NzAbstractAtlas* atlas, void* userdata) override;
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const Glyph& PrecacheGlyph(GlyphMap& glyphMap, unsigned int characterSize, nzUInt32 style, char32_t character) const;
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std::shared_ptr<NzAbstractAtlas> m_atlas;
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std::unique_ptr<NzFontData> m_data;
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mutable std::unordered_map<nzUInt64, std::unordered_map<nzUInt64, int>> m_kerningCache;
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mutable std::unordered_map<nzUInt64, GlyphMap> m_glyphes;
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mutable std::unordered_map<nzUInt64, SizeInfo> m_sizeInfoCache;
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unsigned int m_glyphBorder;
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unsigned int m_minimumSizeStep;
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static NzFontLoader::LoaderList s_loaders;
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};
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#endif // NAZARA_FONT_HPP
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