FontLoader.h

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#pragma once
 
#include <string>
#include <vector>
#include <Windows.h>
#include <dwrite.h>
 
#include <Strings/components/utils/saferelease/saferelease.h>
 
#ifndef BLAM
#define BLAM
#endif
 
typedef std::vector<std::wstring> MFFontList;
 
namespace BlamRendering::DirectX::D2D::MF
{
    namespace MFFontGlobals
    {
        BLAM int                          push(MFFontList &collection);
 
        BLAM std::vector<MFFontList>&     getFontFileLists();
 
        BLAM void                         addFontCollection(std::string id, IDWriteFontCollection* collection);
 
        BLAM IDWriteFontCollection*       getFontCollection(std::string id);
 
        BLAM void                         cleanupCollectionList();
    }
 
    BLAM HRESULT                          CreateFontCollection(MFFontList &newCollection, std::string font_id);
 
    class MFFontCollectionLoader : public IDWriteFontCollectionLoader
    {
    public:
        MFFontCollectionLoader()
        {
            reference_count = 0;
        }
 
        // IUnknown Methods                     //
 
        virtual HRESULT __stdcall QueryInterface(REFIID iid, void** ppvObject);
 
        virtual ULONG __stdcall AddRef();
 
        virtual ULONG __stdcall Release();
 
        // IDWriteFontCollectionLoader Methods  //
 
        virtual HRESULT __stdcall CreateEnumeratorFromKey(IDWriteFactory* factory, void const* collectionKey, UINT32 collectionKeySize, IDWriteFontFileEnumerator** fontFileEnumerator);
 
    private:
        ULONG reference_count; 
    };
 
    class MFFontFileEnumerator : public IDWriteFontFileEnumerator
    {
    public:
        MFFontFileEnumerator(IDWriteFactory* factory);
 
        HRESULT Initialize(UINT const* collectionKey, UINT32 keySize);
 
        ~MFFontFileEnumerator()
        {
            SafeRelease(&current_file);
        }
 
        // IUnknown Methods                     //
 
        virtual HRESULT __stdcall QueryInterface(REFIID iid, void** ppvObject);
 
        virtual ULONG __stdcall AddRef();
 
        virtual ULONG __stdcall Release();
 
        // IDWriteFontFileEnumerator Methods    //
 
        virtual HRESULT __stdcall MoveNext(BOOL* hasCurrentFile);
 
        virtual HRESULT __stdcall GetCurrentFontFile(IDWriteFontFile** fontFile);
 
    private:
        ULONG reference_count;  
 
        IDWriteFontFile* current_file;         
        std::vector<std::wstring> file_paths;  
        size_t next_index;                     
    };
    
}