[FONTEXT] Initial implementation

[reactos.git] / dll / shellext / fontext / CEnumFonts.cpp

diff --git a/dll/shellext/fontext/CEnumFonts.cpp b/dll/shellext/fontext/CEnumFonts.cpp
new file mode 100644 (file)
index 0000000..7e19718
--- /dev/null
+++ b/dll/shellext/fontext/CEnumFonts.cpp
@@ -0,0 +1,91 @@
+/*
+ * PROJECT:     ReactOS Font Shell Extension
+ * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
+ * PURPOSE:     CEnumFonts implementation
+ * COPYRIGHT:   Copyright 2019 Mark Jansen (mark.jansen@reactos.org)
+ */
+
+#include "precomp.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(fontext);
+
+
+
+class CEnumFonts :
+    public CComObjectRootEx<CComMultiThreadModelNoCS>,
+    public IEnumIDList
+{
+private:
+    DWORD m_dwFlags;
+    ULONG m_Index;
+
+public:
+    CEnumFonts()
+        :m_dwFlags(0)
+        ,m_Index(0)
+    {
+    }
+
+    STDMETHODIMP Initialize(CFontExt* folder, DWORD flags)
+    {
+        m_dwFlags = flags;
+        m_Index = 0;
+        return S_OK;
+    }
+
+    // *** IEnumIDList methods ***
+    STDMETHODIMP Next(ULONG celt, LPITEMIDLIST *rgelt, ULONG *pceltFetched)
+    {
+        if (!pceltFetched || !rgelt)
+            return E_POINTER;
+
+        ULONG Fetched = 0;
+
+        while (celt)
+        {
+            celt--;
+
+            if (m_Index < g_FontCache->Size())
+            {
+                CStringW Name = g_FontCache->Name(m_Index);
+                rgelt[Fetched] = _ILCreate(Name, m_Index);
+
+                m_Index++;
+                Fetched++;
+            }
+        }
+
+        *pceltFetched = Fetched;
+        return Fetched ? S_OK : S_FALSE;
+    }
+    STDMETHODIMP Skip(ULONG celt)
+    {
+        m_Index += celt;
+        return S_OK;
+    }
+    STDMETHODIMP Reset()
+    {
+        m_Index = 0;
+        return S_OK;
+    }
+    STDMETHODIMP Clone(IEnumIDList **ppenum)
+    {
+        return E_NOTIMPL;
+    }
+
+
+public:
+    DECLARE_NOT_AGGREGATABLE(CEnumFonts)
+    DECLARE_PROTECT_FINAL_CONSTRUCT()
+    
+    BEGIN_COM_MAP(CEnumFonts)
+        COM_INTERFACE_ENTRY_IID(IID_IEnumIDList, IEnumIDList)
+    END_COM_MAP()
+};
+
+
+HRESULT _CEnumFonts_CreateInstance(CFontExt* zip, DWORD flags, REFIID riid, LPVOID * ppvOut)
+{
+    return ShellObjectCreatorInit<CEnumFonts>(zip, flags, riid, ppvOut);
+}
+