Two new font implementations for OS/2

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5206 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/fontenum.cpp

@@ -0,0 +1,214 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        msw/fontenum.cpp
+// Purpose:     wxFontEnumerator class for Windows
+// Author:      Julian Smart
+// Modified by: David Webster to add support for font encodings
+// Created:     01/03/00
+// RCS-ID:      $Id$
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+  #include "wx/font.h"
+#endif
+
+#include "wx/fontenum.h"
+#include "wx/fontmap.h"
+
+#include "wx/os2/private.h"
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+class wxFontEnumeratorHelper
+{
+public:
+    wxFontEnumeratorHelper(wxFontEnumerator *fontEnum);
+
+    // control what exactly are we enumerating
+    bool SetEncoding(wxFontEncoding encoding);
+    void SetFixedOnly(bool fixedOnly)
+        { m_fixedOnly = fixedOnly; }
+
+    // call to start enumeration
+    void DoEnumerate();
+
+    // called by our font enumeration proc
+    bool OnFont(/*const LPLOGFONT lf, const LPTEXTMETRIC tm*/) const;
+
+private:
+    // the object we forward calls to OnFont() to
+    wxFontEnumerator *m_fontEnum;
+
+    // if != -1, enum only fonts which have this encoding
+    int m_charset;
+
+    // if not empty, enum only the fonts with this facename
+    wxString m_facename;
+
+    // if TRUE, enum only fixed fonts
+    bool m_fixedOnly;
+};
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+// TODO:
+/*
+int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
+                                  DWORD dwStyle, LONG lParam);
+*/
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxFontEnumeratorHelper
+// ----------------------------------------------------------------------------
+
+wxFontEnumeratorHelper::wxFontEnumeratorHelper(wxFontEnumerator *fontEnum)
+{
+    m_fontEnum = fontEnum;
+    m_charset = -1;
+    m_fixedOnly = FALSE;
+}
+
+bool wxFontEnumeratorHelper::SetEncoding(wxFontEncoding encoding)
+{
+    wxNativeEncodingInfo info;
+    if ( !wxGetNativeFontEncoding(encoding, &info) )
+    {
+        if ( !wxTheFontMapper->GetAltForEncoding(encoding, &info) )
+        {
+            // no such encodings at all
+            return FALSE;
+        }
+    }
+    m_charset = info.charset;
+    m_facename = info.facename;
+
+    return TRUE;
+}
+
+#define wxFONTENUMPROC FONTENUMPROC
+
+void wxFontEnumeratorHelper::DoEnumerate()
+{
+   // TODO:
+   /*
+    HDC hDC = ::GetDC(NULL);
+
+#ifdef __WIN32__
+    LOGFONT lf;
+    lf.lfCharSet = m_charset;
+    wxStrncpy(lf.lfFaceName, m_facename, WXSIZEOF(lf.lfFaceName));
+    lf.lfPitchAndFamily = 0;
+    ::EnumFontFamiliesEx(hDC, &lf, (wxFONTENUMPROC)wxFontEnumeratorProc,
+                         (LPARAM)this, 0) ;
+#else // Win16
+    ::EnumFonts(hDC, (LPTSTR)NULL, (FONTENUMPROC)wxFontEnumeratorProc,
+    #ifdef STRICT
+               (LPARAM)
+    #else
+               (LPSTR)
+    #endif
+               this);
+#endif // Win32/16
+
+    ::ReleaseDC(NULL, hDC);
+    */
+}
+
+bool wxFontEnumeratorHelper::OnFont(/*const LPLOGFONT lf,
+                                      const LPTEXTMETRIC tm */) const
+{
+   // TODO:
+   /*
+    if ( m_fixedOnly )
+    {
+        // check that it's a fixed pitch font (there is *no* error here, the
+        // flag name is misleading!)
+        if ( tm->tmPitchAndFamily & TMPF_FIXED_PITCH )
+        {
+            // not a fixed pitch font
+            return TRUE;
+        }
+    }
+
+    if ( m_charset != -1 )
+    {
+        // check that we have the right encoding
+        if ( lf->lfCharSet != m_charset )
+        {
+            return TRUE;
+        }
+    }
+
+    return m_fontEnum->OnFacename(lf->lfFaceName);
+   */
+    return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// wxFontEnumerator
+// ----------------------------------------------------------------------------
+
+bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
+                                          bool fixedWidthOnly)
+{
+    wxFontEnumeratorHelper fe(this);
+    if ( fe.SetEncoding(encoding) )
+    {
+        fe.SetFixedOnly(fixedWidthOnly);
+
+        fe.DoEnumerate();
+    }
+    // else: no such fonts, unknown encoding
+
+    return TRUE;
+}
+
+bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
+{
+    wxFAIL_MSG(wxT("TODO"));
+
+    return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// Windows callbacks
+// ----------------------------------------------------------------------------
+
+// TODO:
+/*
+int CALLBACK wxFontEnumeratorProc(LPLOGFONT lplf, LPTEXTMETRIC lptm,
+                                  DWORD dwStyle, LONG lParam)
+{
+    // Get rid of any fonts that we don't want...
+    if ( dwStyle != TRUETYPE_FONTTYPE )
+    {
+        // continue enumeration
+        return TRUE;
+    }
+
+    wxFontEnumeratorHelper *fontEnum = (wxFontEnumeratorHelper *)lParam;
+
+    return fontEnum->OnFont(lplf, lptm);
+}
+*/
+