DoPrepareDC needs the dc.

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

diff --git a/include/wx/encconv.h b/include/wx/encconv.h
index ca991709e034344382b2215d8939c95da21c06af..f950f634cbf78718fae4dc674e177535bc6a16bb 100644 (file)
--- a/include/wx/encconv.h
+++ b/include/wx/encconv.h
@@ -1,32 +1,40 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        encconv.h
+// Name:        wx/encconv.h
 // Purpose:     wxEncodingConverter class for converting between different
 //              font encodings
 // Author:      Vaclav Slavik
 // Copyright:   (c) 1999 Vaclav Slavik
-// Licence:     wxWindows Licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifndef __ENCCONV_H__
-#define __ENCCONV_H__
+#ifndef _WX_ENCCONV_H_
+#define _WX_ENCCONV_H_
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma interface "encconv.h"
 #endif
 
 #include "wx/defs.h"
-#include "wx/font.h"
-#include "wx/dynarray.h"
 
+#if wxUSE_FONTMAP
+
+#include "wx/object.h"
+#include "wx/fontenc.h"
+#include "wx/dynarray.h"
 
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
 
-enum {
+enum
+{
     wxCONVERT_STRICT,
     wxCONVERT_SUBSTITUTE
 };
 
 
-enum {
+enum
+{
     wxPLATFORM_CURRENT = -1,
 
     wxPLATFORM_UNIX = 0,
@@ -35,8 +43,11 @@ enum {
     wxPLATFORM_MAC
 };
 
-WX_DEFINE_ARRAY(wxFontEncoding, wxFontEncodingArray);
+// ----------------------------------------------------------------------------
+// types
+// ----------------------------------------------------------------------------
 
+WX_DEFINE_ARRAY_INT(wxFontEncoding, wxFontEncodingArray);
 
 //--------------------------------------------------------------------------------
 // wxEncodingConverter
@@ -44,15 +55,15 @@ WX_DEFINE_ARRAY(wxFontEncoding, wxFontEncodingArray);
 //                  8bit encodings/charsets. It can also convert from/to Unicode
 //--------------------------------------------------------------------------------
 
-class WXDLLEXPORT wxEncodingConverter : public wxObject
+class WXDLLIMPEXP_BASE wxEncodingConverter : public wxObject
 {
     public:
 
             wxEncodingConverter();
             ~wxEncodingConverter() { if (m_Table) delete[] m_Table; }
 
-            // Initialize convertion. Both output or input encoding may
-            // be wxFONTENCODING_UNICODE, but only if wxUSE_UNICODE is set to 1.
+            // Initialize conversion. Both output or input encoding may
+            // be wxFONTENCODING_UNICODE, but only if wxUSE_WCHAR_T is set to 1.
             //
             // All subsequent calls to Convert() will interpret it's argument
             // as a string in input_enc encoding and will output string in
@@ -76,21 +87,21 @@ class WXDLLEXPORT wxEncodingConverter : public wxObject
             //
             // Returns FALSE if given conversion is impossible, TRUE otherwise
             // (conversion may be impossible either if you try to convert
-            // to Unicode with non-Unicode build of wxWindows or if input
+            // to Unicode with non-Unicode build of wxWidgets or if input
             // or output encoding is not supported.)
             bool Init(wxFontEncoding input_enc, wxFontEncoding output_enc, int method = wxCONVERT_STRICT);
 
             // Convert input string according to settings passed to Init.
             // Note that you must call Init before using Convert!
-            void Convert(const wxChar* input, wxChar* output);
-            void Convert(wxChar* str) { Convert(str, str); }
-            wxString Convert(const wxString& input);
-
-#if wxUSE_UNICODE // otherwise wxChar === char
-            void Convert(const char* input, wxChar* output);
-            void Convert(const wxChar* input, char* output);
-            void Convert(const char* input, char* output);
-            void Convert(char* str) { Convert(str, str); }
+            void Convert(const char* input, char* output) const;
+            void Convert(char* str) const { Convert(str, str); }
+            wxString Convert(const wxString& input) const;
+
+#if wxUSE_WCHAR_T
+            void Convert(const char* input, wchar_t* output) const;
+            void Convert(const wchar_t* input, char* output) const;
+            void Convert(const wchar_t* input, wchar_t* output) const;
+            void Convert(wchar_t* str) const { Convert(str, str); }
 #endif
             // Return equivalent(s) for given font that are used
             // under given platform. wxPLATFORM_CURRENT means the plaform
@@ -127,30 +138,30 @@ class WXDLLEXPORT wxEncodingConverter : public wxObject
             // equivalent encodings, regardless the platform, including itself.
             static wxFontEncodingArray GetAllEquivalents(wxFontEncoding enc);
 
+            // Return true if [any text in] one multibyte encoding can be
+            // converted to another one losslessly.
+            //
+            // Do not call this with wxFONTENCODING_UNICODE, it doesn't make
+            // sense (always works in one sense and always depends on the text
+            // to convert in the other)
+            static bool CanConvert(wxFontEncoding encIn, wxFontEncoding encOut)
+            {
+                return GetAllEquivalents(encIn).Index(encOut) != wxNOT_FOUND;
+            }
+
     private:
 
-            wxChar *m_Table;
+#if wxUSE_WCHAR_T
+            wchar_t *m_Table;
+#else
+            char *m_Table;
+#endif
             bool m_UnicodeInput, m_UnicodeOutput;
             bool m_JustCopy;
 
+    DECLARE_NO_COPY_CLASS(wxEncodingConverter)
 };
 
+#endif // wxUSE_FONTMAP
 
-#endif  // __ENCCONV_H__
-
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-
+#endif  // _WX_ENCCONV_H_