Font.h

// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
#pragma once
#include <kiwano/core/Resource.h>
#include <kiwano/platform/NativeObject.hpp>
 
namespace kiwano
{
 
class Renderer;
 
struct FontWeight
{
    enum Value : uint32_t
    {
        Thin       = 100U,
        ExtraLight = 200U,
        Light      = 300U,
        Normal     = 400U,  
        Medium     = 500U,
        Bold       = 700U,  
        ExtraBold  = 800U,
        Black      = 900U,
        ExtraBlack = 950U
    };
};
 
enum class FontPosture
{
    Normal,   
    Oblique,  
    Italic,   
};
 
enum class FontStretch
{
    Unknown,
    UltraCondensed,
    ExtraCondensed,
    Condensed,  
    SemiCondensed,
    Normal,  
    SemiExpanded,
    Expanded,  
    ExtraExpanded,
    UltraExpanded,
};
 
class KGE_API FontCollection : public NativeObject
{
public:
    static RefPtr<FontCollection> Preload(const Vector<String>& files);
 
    static RefPtr<FontCollection> Preload(const Vector<Resource>& resources);
 
    const Vector<String>& GetFamilyNames() const;
 
protected:
    Vector<String> family_names_;
};
 
class KGE_API Font
{
public:
    float                  size;
    uint32_t               weight;
    FontPosture            posture;
    FontStretch            stretch;
    String                 family_name;
    RefPtr<FontCollection> collection;
 
    Font(StringView family_name, float size, uint32_t weight = FontWeight::Normal,
         FontPosture posture = FontPosture::Normal, FontStretch stretch = FontStretch::Normal);
 
    Font(RefPtr<FontCollection> collection, float size, uint32_t weight = FontWeight::Normal,
         FontPosture posture = FontPosture::Normal, FontStretch stretch = FontStretch::Normal);
};
 
class KGE_API FontCache final : public Singleton<FontCache>
{
    friend Singleton<FontCache>;
 
public:
    void AddFontCollection(RefPtr<FontCollection> collection);
 
    void AddFontCollection(StringView font_family, RefPtr<FontCollection> collection);
 
    RefPtr<FontCollection> GetFontCollection(StringView font_family) const;
 
    void RemoveFontCollection(StringView font_family);
 
    void Clear();
 
    ~FontCache();
 
private:
    FontCache();
 
    String TransformFamily(String family) const;
 
private:
    UnorderedMap<String, RefPtr<FontCollection>> collection_cache_;
};
 
inline const Vector<String>& FontCollection::GetFamilyNames() const
{
    return family_names_;
}
 
}  // namespace kiwano