Prevent seg fault for older GTK+

[wxWidgets.git] / include / wx / fontenum.h

diff --git a/include/wx/fontenum.h b/include/wx/fontenum.h
index 02f94a893065273b9fea8d83e573eba28c85561b..0e4b525cd573ef573d0bfe5e414eda6b9e6fa857 100644 (file)
--- a/include/wx/fontenum.h
+++ b/include/wx/fontenum.h
@@ -1,9 +1,9 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        fontenum.h
+// Name:        wx/fontenum.h
 // Purpose:     wxFontEnumerator class for getting available fonts
 // Author:      Julian Smart, Vadim Zeitlin
-// Modified by: extended to enumerate more than just font families and work ot
-//              only on Windows (VZ)
+// Modified by: extended to enumerate more than just font facenames and works
+//              not only on Windows now (VZ)
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart, Vadim Zeitlin
@@ -13,39 +13,71 @@
 #ifndef _WX_FONTENUM_H_
 #define _WX_FONTENUM_H_
 
-#ifdef __GNUG__
-    #pragma interface "fontenum.h"
-#endif
+#include "wx/fontenc.h"
+#include "wx/arrstr.h"
 
 // ----------------------------------------------------------------------------
 // wxFontEnumerator enumerates all available fonts on the system or only the
 // fonts with given attributes
 // ----------------------------------------------------------------------------
 
-class wxFontEnumerator
+class WXDLLEXPORT wxFontEnumerator
 {
 public:
-    // start enumerating font families - will result in OnFontFamily() being
-    // called for each available font family (unless it returns FALSE)
-    virtual bool EnumerateFamilies(bool fixedWidthOnly = FALSE);
+    wxFontEnumerator() {}
+
+    // virtual dtor for the base class
+    virtual ~wxFontEnumerator() {}
+
+    // start enumerating font facenames (either all of them or those which
+    // support the given encoding) - will result in OnFacename() being
+    // called for each available facename (until they are exhausted or
+    // OnFacename returns false)
+    virtual bool EnumerateFacenames
+                 (
+                    wxFontEncoding encoding = wxFONTENCODING_SYSTEM, // all
+                    bool fixedWidthOnly = false
+                 );
 
-    // enumerate the different encodings either for given font family or for
-    // all font families - will result in OnFontEncoding() being called for
-    // each available (family, encoding) couple
-    virtual bool EnumerateEncodings(const wxString& family = T(""));
+    // enumerate the different encodings either for given font facename or for
+    // all facenames - will result in OnFontEncoding() being called for each
+    // available (facename, encoding) couple
+    virtual bool EnumerateEncodings(const wxString& facename = wxEmptyString);
 
     // callbacks which are called after one of EnumerateXXX() functions from
-    // above is invoked - all of them may return FALSE to stop enumeration or
-    // TRUE to continue with it
+    // above is invoked - all of them may return false to stop enumeration or
+    // true to continue with it
 
-    // called by EnumerateFamilies
-    virtual bool OnFontFamily(const wxString& WXUNUSED(family))
-        { return FALSE; }
+    // called by EnumerateFacenames
+    virtual bool OnFacename(const wxString& WXUNUSED(facename))
+        { return true; }
 
     // called by EnumerateEncodings
-    virtual bool OnFontEncoding(const wxString& WXUNUSED(family),
+    virtual bool OnFontEncoding(const wxString& WXUNUSED(facename),
                                 const wxString& WXUNUSED(encoding))
-        { return FALSE; }
+        { return true; }
+
+
+
+    // convenience function that returns array of facenames.
+    static wxArrayString
+    GetFacenames(wxFontEncoding encoding = wxFONTENCODING_SYSTEM, // all
+                 bool fixedWidthOnly = false);
+
+    // convenience function that returns array of all available encodings.
+    static wxArrayString GetEncodings(const wxString& facename = wxEmptyString);
+
+    // convenience function that returns true if the given face name exist
+    // in the user's system
+    static bool IsValidFacename(const wxString &str);
+
+private:
+#ifdef wxHAS_UTF8_FONTS
+    // helper for ports that only use UTF-8 encoding natively
+    bool EnumerateEncodingsUTF8(const wxString& facename);
+#endif
+
+    DECLARE_NO_COPY_CLASS(wxFontEnumerator)
 };
 
 #endif // _WX_FONTENUM_H_