// Created: 04.11.99
// RCS-ID: $Id$
// Copyright: (c) Vadim Zeitlin
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_FONTMAPPER_H_
#define _WX_FONTMAPPER_H_
-#ifdef __GNUG__
- #pragma interface "fontmap.h"
-#endif
-
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
-#include "wx/defs.h" // for wxDEFAULT &c
+#if wxUSE_FONTMAP
-#include "wx/font.h" // for wxFontEncoding
+#include "wx/fontenc.h" // for wxFontEncoding
-class WXDLLEXPORT wxConfigBase;
+#if wxUSE_GUI
+ #include "wx/fontutil.h" // for wxNativeEncodingInfo
+#endif // wxUSE_GUI
-// ----------------------------------------------------------------------------
-// wxFontMapper manages user-definable correspondence between logical font
-// names and the fonts present on the machine.
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+ class WXDLLIMPEXP_FWD_BASE wxConfigBase;
+#endif // wxUSE_CONFIG
+
+class WXDLLIMPEXP_FWD_CORE wxFontMapper;
+
+#if wxUSE_GUI
+ class WXDLLIMPEXP_FWD_CORE wxWindow;
+#endif // wxUSE_GUI
+
+// ============================================================================
+// wxFontMapper manages user-definable correspondence between wxWidgets font
+// encodings and the fonts present on the machine.
//
-// The default implementations of all functions will ask the user if they are
-// not capable of finding the answer themselves and store the answer in a
-// config file (configurable via SetConfigXXX functions). This behaviour may
-// be disabled by giving the value of FALSE to "interactive" parameter.
-// However, the functions will always consult the config file to allow the
-// user-defined values override the default logic and there is no way to
-// disable this - which shouldn't be ever needed because if "interactive" was
-// never TRUE, the config file is never created anyhow.
+// This is a singleton class, font mapper objects can only be accessed using
+// wxFontMapper::Get().
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxFontMapperBase: this is a non-interactive class which just uses its built
+// in knowledge of the encodings equivalence
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxFontMapper
+class WXDLLIMPEXP_BASE wxFontMapperBase
{
public:
+ // constructor and such
+ // ---------------------
+
// default ctor
- wxFontMapper();
+ wxFontMapperBase();
- // virtual dtor for a base class
- virtual ~wxFontMapper();
+ // virtual dtor for any base class
+ virtual ~wxFontMapperBase();
+
+ // return instance of the wxFontMapper singleton
+ // wxBase code only cares that it's a wxFontMapperBase
+ // In wxBase, wxFontMapper is only forward declared
+ // so one cannot implicitly cast from it to wxFontMapperBase.
+ static wxFontMapperBase *Get();
+
+ // set the singleton to 'mapper' instance and return previous one
+ static wxFontMapper *Set(wxFontMapper *mapper);
+
+ // delete the existing font mapper if any
+ static void Reset();
+
+
+ // translates charset strings to encoding
+ // --------------------------------------
// returns the encoding for the given charset (in the form of RFC 2046) or
// wxFONTENCODING_SYSTEM if couldn't decode it
+ //
+ // interactive parameter is ignored in the base class, we behave as if it
+ // were always false
virtual wxFontEncoding CharsetToEncoding(const wxString& charset,
- bool interactive = TRUE);
+ bool interactive = true);
- // configure the appearance of the dialogs we may popup
- // ----------------------------------------------------
+ // information about supported encodings
+ // -------------------------------------
+
+ // get the number of font encodings we know about
+ static size_t GetSupportedEncodingsCount();
+
+ // get the n-th supported encoding
+ static wxFontEncoding GetEncoding(size_t n);
+
+ // return canonical name of this encoding (this is a short string,
+ // GetEncodingDescription() returns a longer one)
+ static wxString GetEncodingName(wxFontEncoding encoding);
+
+ // return a list of all names of this encoding (see GetEncodingName)
+ static const wxChar** GetAllEncodingNames(wxFontEncoding encoding);
+
+ // return user-readable string describing the given encoding
+ //
+ // NB: hard-coded now, but might change later (read it from config?)
+ static wxString GetEncodingDescription(wxFontEncoding encoding);
+
+ // find the encoding corresponding to the given name, inverse of
+ // GetEncodingName() and less general than CharsetToEncoding()
+ //
+ // returns wxFONTENCODING_MAX if the name is not a supported encoding
+ static wxFontEncoding GetEncodingFromName(const wxString& name);
- void SetDialogTitle(const wxString& title) { m_titleDialog = title; }
// functions which allow to configure the config object used: by default,
// the global one (from wxConfigBase::Get() will be used) and the default
// GetDefaultConfigPath()
// ----------------------------------------------------------------------
- // set the config object to use (may be NULL to use default)
- void SetConfig(wxConfigBase *config) { m_config = config; }
-
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
// set the root config path to use (should be an absolute path)
void SetConfigPath(const wxString& prefix);
// return default config path
- static const wxChar *GetDefaultConfigPath();
+ static const wxString& GetDefaultConfigPath();
+#endif // wxUSE_CONFIG
+
+
+ // returns true for the base class and false for a "real" font mapper object
+ // (implementation-only)
+ virtual bool IsDummy() { return true; }
protected:
- // get the config object we're using - if it wasn't set explicitly, this
- // function will use wxConfig::Get() to get the global one
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+ // get the config object we're using -- either the global config object
+ // or a wxMemoryConfig object created by this class otherwise
wxConfigBase *GetConfig();
- // gets the root path for our settings - if itwasn't set explicitly, use
+ // gets the root path for our settings -- if it wasn't set explicitly, use
// GetDefaultConfigPath()
const wxString& GetConfigPath();
- // change to the given (relative) path in the config, return TRUE if ok
- // (then GetConfig() will return something !NULL), FALSE if no config
+ // change to the given (relative) path in the config, return true if ok
+ // (then GetConfig() will return something !NULL), false if no config
// object
//
// caller should provide a pointer to the string variable which should be
void RestorePath(const wxString& pathOld);
// config object and path (in it) to use
- wxConfigBase *m_config;
- wxString m_configRootPath;
+ wxConfigBase *m_configDummy;
+
+ wxString m_configRootPath;
+#endif // wxUSE_CONFIG
+
+ // the real implementation of the base class version of CharsetToEncoding()
+ //
+ // returns wxFONTENCODING_UNKNOWN if encoding is unknown and we shouldn't
+ // ask the user about it, wxFONTENCODING_SYSTEM if it is unknown but we
+ // should/could ask the user
+ int NonInteractiveCharsetToEncoding(const wxString& charset);
+
+private:
+ // the global fontmapper object or NULL
+ static wxFontMapper *sm_instance;
+
+ friend class wxFontMapperPathChanger;
+
+ DECLARE_NO_COPY_CLASS(wxFontMapperBase)
+};
+
+// ----------------------------------------------------------------------------
+// wxFontMapper: interactive extension of wxFontMapperBase
+//
+// The default implementations of all functions will ask the user if they are
+// not capable of finding the answer themselves and store the answer in a
+// config file (configurable via SetConfigXXX functions). This behaviour may
+// be disabled by giving the value of false to "interactive" parameter.
+// However, the functions will always consult the config file to allow the
+// user-defined values override the default logic and there is no way to
+// disable this -- which shouldn't be ever needed because if "interactive" was
+// never true, the config file is never created anyhow.
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+
+class WXDLLIMPEXP_CORE wxFontMapper : public wxFontMapperBase
+{
+public:
+ // default ctor
+ wxFontMapper();
+
+ // virtual dtor for a base class
+ virtual ~wxFontMapper();
+
+ // working with the encodings
+ // --------------------------
+
+ // returns the encoding for the given charset (in the form of RFC 2046) or
+ // wxFONTENCODING_SYSTEM if couldn't decode it
+ virtual wxFontEncoding CharsetToEncoding(const wxString& charset,
+ bool interactive = true);
+
+ // find an alternative for the given encoding (which is supposed to not be
+ // available on this system). If successful, return true and fill info
+ // structure with the parameters required to create the font, otherwise
+ // return false
+ virtual bool GetAltForEncoding(wxFontEncoding encoding,
+ wxNativeEncodingInfo *info,
+ const wxString& facename = wxEmptyString,
+ bool interactive = true);
+
+ // version better suitable for 'public' use. Returns wxFontEcoding
+ // that can be used it wxFont ctor
+ bool GetAltForEncoding(wxFontEncoding encoding,
+ wxFontEncoding *alt_encoding,
+ const wxString& facename = wxEmptyString,
+ bool interactive = true);
+
+ // checks whether given encoding is available in given face or not.
+ //
+ // if no facename is given (default), return true if it's available in any
+ // facename at alll.
+ virtual bool IsEncodingAvailable(wxFontEncoding encoding,
+ const wxString& facename = wxEmptyString);
+
+
+ // configure the appearance of the dialogs we may popup
+ // ----------------------------------------------------
+
+ // the parent window for modal dialogs
+ void SetDialogParent(wxWindow *parent) { m_windowParent = parent; }
+
+ // the title for the dialogs (note that default is quite reasonable)
+ void SetDialogTitle(const wxString& title) { m_titleDialog = title; }
+
+ // GUI code needs to know it's a wxFontMapper because there
+ // are additional methods in the subclass.
+ static wxFontMapper *Get();
+
+ // pseudo-RTTI since we aren't a wxObject.
+ virtual bool IsDummy() { return false; }
+
+protected:
+ // GetAltForEncoding() helper: tests for the existence of the given
+ // encoding and saves the result in config if ok - this results in the
+ // following (desired) behaviour: when an unknown/unavailable encoding is
+ // requested for the first time, the user is asked about a replacement,
+ // but if he doesn't choose any and the default logic finds one, it will
+ // be saved in the config so that the user won't be asked about it any
+ // more
+ bool TestAltEncoding(const wxString& configEntry,
+ wxFontEncoding encReplacement,
+ wxNativeEncodingInfo *info);
// the title for our dialogs
wxString m_titleDialog;
// the parent window for our dialogs
wxWindow *m_windowParent;
+
+private:
+ DECLARE_NO_COPY_CLASS(wxFontMapper)
};
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// the default font mapper for wxWidgets programs do NOT use! This is for
+// backward compatibility, use wxFontMapper::Get() instead
+#define wxTheFontMapper (wxFontMapper::Get())
+
+#else // !wxUSE_FONTMAP
+
+#if wxUSE_GUI
+ // wxEncodingToCodepage (utils.cpp) needs wxGetNativeFontEncoding
+ #include "wx/fontutil.h"
+#endif
+
+#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
+
#endif // _WX_FONTMAPPER_H_
+
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