CFontCache Class Reference

#include <CFontCache.hpp>

Public Member Functions
void	Read ()
void	SetFontDir (const LPCWSTR Path)
const CStringW &	FontPath () const
size_t	Size ()
CStringW	Name (size_t Index)
CFontInfo *	Find (const FontPidlEntry *fontEntry)
CStringW	Filename (CFontInfo *info, bool alwaysFullPath=false)

Protected Member Functions
	CFontCache ()
void	Insert (CAtlList< CFontInfo > &fonts, const CStringW &KeyName)

Private Attributes
CAtlArray< CFontInfo >	m_Fonts
CStringW	m_FontFolderPath

Friends
class	CFontExtModule

Detailed Description

Definition at line 38 of file CFontCache.hpp.

Constructor & Destructor Documentation

CFontCache()

CFontCache::CFontCache ( )

protected

Definition at line 116 of file CFontCache.cpp.

{
}

Member Function Documentation

Filename()

CStringW CFontCache::Filename	(	CFontInfo *	info,
		bool	alwaysFullPath = false
	)

Definition at line 164 of file CFontCache.cpp.

{
    CStringW File;
    if (info)
    {
        File = info->File();
 
        if (!File.IsEmpty() && alwaysFullPath)
        {
            // Ensure this is a full path
            if (PathIsRelativeW(File))
            {
                File = m_FontFolderPath + File;
            }
        }
    }
 
    return File;
}

Referenced by _CDataObject_CreateInstance(), CFontExt::GetDisplayNameOf(), CFontExt::GetUIObjectOf(), CFontInfo::ReadAttrs(), and RunFontViewer().

Find()

CFontInfo * CFontCache::Find

(

const FontPidlEntry *

fontEntry

)

Definition at line 145 of file CFontCache.cpp.

{
    if (fontEntry->Index < m_Fonts.GetCount())
    {
        if (m_Fonts[fontEntry->Index].Name().CompareNoCase(fontEntry->Name) == 0)
            return &m_Fonts[fontEntry->Index];
    }
 
    for (UINT n = 0; n < Size(); ++n)
    {
        if (m_Fonts[n].Name().CompareNoCase(fontEntry->Name) == 0)
        {
            return &m_Fonts[n];
        }
    }
    return nullptr;
}

Referenced by _CDataObject_CreateInstance(), CFontExt::CompareIDs(), CFontExt::GetDetailsOf(), CFontExt::GetDisplayNameOf(), CFontExt::GetUIObjectOf(), and RunFontViewer().

FontPath()

const CStringW & CFontCache::FontPath ( ) const

inline

Definition at line 53 of file CFontCache.hpp.

{ return m_FontFolderPath; }

Referenced by CFontExt::Drop().

Insert()

void CFontCache::Insert ( CAtlList< CFontInfo > &  fonts, const CStringW &  KeyName  )

protected

Definition at line 184 of file CFontCache.cpp.

{
    POSITION it = fonts.GetHeadPosition();
    while (it != NULL)
    {
        POSITION lastit = it;
        const CFontInfo& info = fonts.GetNext(it);
        if (info.Name().CompareNoCase(KeyName) >= 0)
        {
            fonts.InsertBefore(lastit, CFontInfo(KeyName));
            return;
        }
    }
    fonts.AddTail(CFontInfo(KeyName));
}

Referenced by Read().

Name()

CStringW CFontCache::Name

(

size_t

Index

)

Definition at line 134 of file CFontCache.cpp.

{
    if (m_Fonts.GetCount() == 0u)
        Read();
 
    if (Index >= m_Fonts.GetCount())
        return CStringW();
 
    return m_Fonts[Index].Name();
}

Referenced by CEnumFonts::Next().

Read()

void CFontCache::Read

(

)

Definition at line 200 of file CFontCache.cpp.

{
    CAtlList<CFontInfo> fonts;
    CRegKey key;
 
    // Enumerate all registered font names
    if (key.Open(FONT_HIVE, FONT_KEY, KEY_READ) == ERROR_SUCCESS)
    {
        LSTATUS Status;
        DWORD dwAllocated = 128;
        DWORD ilIndex = 0;
        CStringW KeyName;
        do
        {
            DWORD dwSize = dwAllocated;
            PWSTR Buffer = KeyName.GetBuffer(dwSize);
            Status = RegEnumValueW(key.m_hKey, ilIndex, Buffer, &dwSize, NULL, NULL, NULL, NULL);
            KeyName.ReleaseBuffer(dwSize);
            if (Status == ERROR_SUCCESS)
            {
                // Insert will create an ordered list
                Insert(fonts, KeyName);
                ilIndex++;
                continue;
            }
            if (Status == ERROR_NO_MORE_ITEMS)
                break;
            else if (Status == ERROR_MORE_DATA)
            {
                dwAllocated += 128;
            }
        } while (Status == ERROR_MORE_DATA || Status == ERROR_SUCCESS);
    }
 
    // Move the fonts from a list to an array (for easy indexing)
    m_Fonts.SetCount(fonts.GetCount());
    size_t Index = 0;
    POSITION it = fonts.GetHeadPosition();
    while (it != NULL)
    {
        m_Fonts[Index] = fonts.GetNext(it);
        Index++;
    }
}

Referenced by CFontExt::Drop(), Name(), and Size().

SetFontDir()

void CFontCache::SetFontDir

(

const LPCWSTR

Path

)

Definition at line 120 of file CFontCache.cpp.

{
    if (m_FontFolderPath.IsEmpty())
        m_FontFolderPath = Path;
}

Referenced by CFontExt::Initialize().

Size()

size_t CFontCache::Size

(

)

Definition at line 126 of file CFontCache.cpp.

{
    if (m_Fonts.GetCount() == 0u)
        Read();
 
    return m_Fonts.GetCount();
}

Referenced by Find().

Friends And Related Function Documentation

CFontExtModule

friend class CFontExtModule

friend

Definition at line 61 of file CFontCache.hpp.

Member Data Documentation

m_FontFolderPath

CStringW CFontCache::m_FontFolderPath

private

Definition at line 42 of file CFontCache.hpp.

Referenced by Filename(), FontPath(), and SetFontDir().

m_Fonts

CAtlArray<CFontInfo> CFontCache::m_Fonts

private

Definition at line 41 of file CFontCache.hpp.

Referenced by Find(), Name(), Read(), and Size().

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The documentation for this class was generated from the following files:

• dll/shellext/fontext/CFontCache.hpp
• dll/shellext/fontext/CFontCache.cpp