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Rendering Text with Direct2D & DirectWrite

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3 Jan 2015CPOL8 min read 106.6K   2.8K   76  
Direct2D, DirectWrite, Windows API, C++, std::shared_ptr and more
 
// hwinobjbase.h

#pragma once
#ifndef __HWINOBJBASE_H__
#define __HWINOBJBASE_H__

#include "hwindef.h"
#include "hwincom.h"
#include "hwinexception.h"
#include "hwinvariant.h"


namespace harlinn
{
    namespace windows
    {
        enum class MarshalContext : DWORD
        {
            Local              = 0,
            NoSharedMem        = 1,
            DifferentMachine   = 2,
            InProc             = 3,
            CrossCtx           = 4
        };

        enum class MarshalFlags : DWORD
        {
            Normal        = 0,
            TableStrong   = 1,
            TableWeak     = 2,
            NoPing        = 4
        };
        DEFINE_ENUM_FLAG_OPERATORS(MarshalFlags)


        class Marshal : public Unknown
        {
        public:
            typedef Unknown Base;

            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(Marshal,Unknown,IMarshal,IUnknown)

            CLSID GetUnmarshalClass( REFIID riid, void *pv, MarshalContext theDestContext, MarshalFlags flags)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                CLSID result;
                auto hr = pInterface->GetUnmarshalClass(riid,pv,DWORD(theDestContext),nullptr,DWORD(flags),&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
            DWORD GetMarshalSizeMax( REFIID riid, void *pv, MarshalContext theDestContext, MarshalFlags flags)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                DWORD result;
                auto hr = pInterface->GetMarshalSizeMax(riid,pv,DWORD(theDestContext),nullptr,DWORD(flags),&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }

            Marshal& MarshalInterface( IStream *pStm, REFIID riid, void *pv, MarshalContext theDestContext, MarshalFlags flags)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->MarshalInterface(pStm,riid,pv,DWORD(theDestContext),nullptr,DWORD(flags));
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            Marshal& UnmarshalInterface( IStream *pStm, REFIID riid, void **ppv)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->UnmarshalInterface(pStm,riid,ppv);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
            Marshal& ReleaseMarshalData( IStream *pStm )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->ReleaseMarshalData(pStm);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            Marshal& DisconnectObject( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->DisconnectObject( 0 );
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        };


        class Malloc : public Unknown
        {
        public:
            typedef Unknown Base;

            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(Malloc,Unknown,IMalloc,IUnknown)

            static Malloc GetMalloc()
            {
                HWIN_TRACE();
                IMalloc* ptr = nullptr;
                auto hr = CoGetMalloc(1,&ptr);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return Malloc(ptr);
            }

            void* Alloc(SIZE_T numberOfBytesToAllocate)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto result = pInterface->Alloc( numberOfBytesToAllocate );
                if(!result && numberOfBytesToAllocate)
                {
                    CheckHRESULT(E_OUTOFMEMORY);
                }
                return result;
            }
            void* Realloc(void *pv,SIZE_T newMemoryBufferSize)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto result = pInterface->Realloc(pv, newMemoryBufferSize );
                if(!result && newMemoryBufferSize)
                {
                    CheckHRESULT(E_OUTOFMEMORY);
                }
                return result;
            }
            void Free(void *pv)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                pInterface->Free(pv);
            }
            SIZE_T GetSize(void *pv)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto result = pInterface->GetSize(pv);
                return result;
            }
            int DidAlloc(void *pv)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto result = pInterface->DidAlloc(pv);
                return result;
            }
            void HeapMinimize(void)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                pInterface->HeapMinimize();
            }
        };


        class EnumUnknown : Unknown
        {
        public:
            typedef Unknown Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(EnumUnknown,Unknown,IEnumUnknown,IUnknown)

            bool Next( Unknown& theResult )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IUnknown* pElement = nullptr;
                ULONG actual = 0;
                auto hr = pInterface->Next(1,&pElement,&actual);
                if(actual)
                {
                    theResult.Reset(pElement);
                    return true;
                }
                return false;
            }
            bool Next( ULONG requestedNumberOfElements, std::vector<Unknown>& result)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IUnknown** pElements = (IUnknown**)alloca(requestedNumberOfElements*sizeof(IUnknown*));
                memset(pElements,0,requestedNumberOfElements*sizeof(IUnknown*));
                ULONG actual = 0;

                auto hr = pInterface->Next(1,pElements,&actual);
                if(actual)
                {
                    result.clear();
                    for(ULONG i= 0; i < actual; i++)
                    {
                        result.push_back(Unknown(pElements[i]));
                    }
                    return true;
                }
                return false;
            }
            EnumUnknown& Skip(ULONG numberOfElements)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Skip(numberOfElements);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            EnumUnknown& Reset( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Reset();
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }

            EnumUnknown Clone()
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IEnumUnknown* pClone = nullptr;
                auto hr = pInterface->Clone(&pClone);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return EnumUnknown(pClone);
            }
        };


        class EnumVARIANT : public Unknown
        {
        public:
            typedef Unknown Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(EnumVARIANT,Unknown,IEnumVARIANT,IUnknown)

            bool Next( VARIANT& theResult )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULONG actual = 0;
                auto hr = pInterface->Next(1,&theResult,&actual);
                if(actual)
                {
                    return true;
                }
                return false;
            }

            bool Next( ULONG requestedNumberOfElements, std::vector<Variant>& result)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                result.clear();
                result.resize(requestedNumberOfElements);
                ULONG actual = 0;

                auto hr = pInterface->Next(1,result.data(),&actual);
                if(actual)
                {
                    if(result.size() != actual)
                    {
                        result.resize(actual);
                    }
                    return true;
                }
                return false;
            }

            EnumVARIANT& Skip(ULONG numberOfElements)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Skip(numberOfElements);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            EnumVARIANT& Reset( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Reset();
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }

            EnumVARIANT Clone()
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                IEnumVARIANT* pClone = nullptr;
                auto hr = pInterface->Clone(&pClone);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return EnumVARIANT(pClone);
            }
        
        };


        class SequentialStream : public Unknown
        {
        public:
            typedef Unknown Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(SequentialStream,Unknown,ISequentialStream,IUnknown)

            ULONG Read(void *pv, ULONG numberOfBytesToRead)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULONG result = 0;
                auto hr = pInterface->Read(pv, numberOfBytesToRead,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }

            ULONG Write(const void *pv, ULONG numberOfBytesToWrite)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULONG result = 0;
                auto hr = pInterface->Write(pv, numberOfBytesToWrite,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result;
            }
        };

        class Stream : public SequentialStream
        {
        public:
            typedef SequentialStream Base;
            HARLINN_WINDOWS_COM_STANDARD_METHODS_IMPL(Stream,SequentialStream,IStream,ISequentialStream)

            unsigned long long Seek( long long numberOfBytesToMove, SeekOrigin seekOrigin )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULARGE_INTEGER result;
                result.QuadPart = 0;
                LARGE_INTEGER btm;
                btm.QuadPart = numberOfBytesToMove;
                auto hr = pInterface->Seek(btm,DWORD(seekOrigin),&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return result.QuadPart;
            }
        
            Stream& SetSize( unsigned long long theNewSize )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULARGE_INTEGER nz;
                nz.QuadPart = theNewSize;
                auto hr = pInterface->SetSize(nz);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }

            Stream& CopyTo( IStream *pstm, unsigned long long numberOfBytesToCopy, unsigned long long* actualNumberOfBytesRead, unsigned long long* actualNumberOfBytesWritten)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULARGE_INTEGER nobtc,anobr,anobw;
                nobtc.QuadPart = numberOfBytesToCopy;
                anobr.QuadPart = 0;
                anobw.QuadPart = 0;
                auto hr = pInterface->CopyTo(pstm,nobtc,&anobr,&anobw);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                if(actualNumberOfBytesRead)
                {
                    *actualNumberOfBytesRead = anobr.QuadPart;
                }
                if(actualNumberOfBytesWritten)
                {
                    *actualNumberOfBytesWritten = anobw.QuadPart;
                }
                return *this;
            }
            Stream& CopyTo( IStream *pstm, unsigned long long numberOfBytesToCopy, unsigned long long& actualNumberOfBytesRead, unsigned long long& actualNumberOfBytesWritten)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                ULARGE_INTEGER nobtc,anobr,anobw;
                nobtc.QuadPart = numberOfBytesToCopy;
                anobr.QuadPart = 0;
                anobw.QuadPart = 0;
                auto hr = pInterface->CopyTo(pstm,nobtc,&anobr,&anobw);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                actualNumberOfBytesRead = anobr.QuadPart;
                actualNumberOfBytesWritten = anobw.QuadPart;
                
                return *this;
            }
            Stream& Commit(DWORD commitFlags = STGC_DEFAULT)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Commit(commitFlags);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            Stream& Revert( )
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Revert( );
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }

        
            Stream& LockRegion(unsigned long long offset, unsigned long long sizeOfRegion, DWORD lockType)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->LockRegion(*(ULARGE_INTEGER*)&offset, *(ULARGE_INTEGER*)&sizeOfRegion, lockType);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            Stream& UnlockRegion( unsigned long long offset, unsigned long long sizeOfRegion, DWORD lockType)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->UnlockRegion(*(ULARGE_INTEGER*)&offset, *(ULARGE_INTEGER*)&sizeOfRegion, lockType);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            Stream& Stat( STATSTG *pstatstg, DWORD grfStatFlag)
            {
                HWIN_TRACE();
                auto pInterface = GetInterface();
                auto hr = pInterface->Stat(pstatstg, grfStatFlag);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }
        
            Stream Clone( )
            {
                HWIN_TRACE();
                IStream *result = nullptr;
                auto pInterface = GetInterface();
                auto hr = pInterface->Clone(&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return Stream(result);
            }

            Stream& WriteClassId(REFCLSID rclsid)
            {
                HWIN_TRACE();
                auto hr = WriteClassStm(*this,rclsid);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                return *this;
            }

            CLSID ReadClassId( )
            {
                HWIN_TRACE();
                CLSID result = {0,};
                auto hr = ReadClassStm(*this,&result);
                if(FAILED(hr))
                {
                    CheckHRESULT(hr);
                }
                result;
            }
        };



    };
};

#endif // __HWINSHELL_H__

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Espen Harlinn
Architect Sea Surveillance AS
Norway Norway
Chief Architect - Sea Surveillance AS.

Specializing in integrated operations and high performance computing solutions.

I’ve been fooling around with computers since the early eighties, I’ve even done work on CP/M and MP/M.

Wrote my first “real” program on a BBC micro model B based on a series in a magazine at that time. It was fun and I got hooked on this thing called programming ...

A few Highlights:

  • High performance application server development
  • Model Driven Architecture and Code generators
  • Real-Time Distributed Solutions
  • C, C++, C#, Java, TSQL, PL/SQL, Delphi, ActionScript, Perl, Rexx
  • Microsoft SQL Server, Oracle RDBMS, IBM DB2, PostGreSQL
  • AMQP, Apache qpid, RabbitMQ, Microsoft Message Queuing, IBM WebSphereMQ, Oracle TuxidoMQ
  • Oracle WebLogic, IBM WebSphere
  • Corba, COM, DCE, WCF
  • AspenTech InfoPlus.21(IP21), OsiSoft PI


More information about what I do for a living can be found at: harlinn.com or LinkedIn

You can contact me at espen@harlinn.no

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Posted 30 Sep 2012

Article Copyright 2012 by Espen Harlinn
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