From 1b08b02df2130b0ffc6af78ff10200e0a3594cd2 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Mon, 10 Feb 2003 15:01:27 +0000
Subject: [PATCH] From Tree, added support for using wchar_t strings with
 osg::Text/EncodedText.

---
 include/osgText/EncodedText | 11 +++++++----
 include/osgText/Text        |  1 +
 src/osgText/EncodedText.cpp | 25 +++++++++++++++++++++++++
 src/osgText/Text.cpp        | 10 ++++++++++
 4 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/include/osgText/EncodedText b/include/osgText/EncodedText
index 1ffa9d7af..ee39b8751 100644
--- a/include/osgText/EncodedText
+++ b/include/osgText/EncodedText
@@ -33,10 +33,10 @@
 #define OSGTEXT_ENCODEDTEXT 1 
 
 #include <osg/Referenced>
+#include <osgText/Export>
 
 #include <vector>
-
-#include <osgText/Export>
+#include <string>
 
 namespace osgText {
 
@@ -67,13 +67,16 @@ class OSGTEXT_EXPORT EncodedText : public osg::Referenced
         Encoding getOverrideEncoding() const { return _overrideEncoding; }
         Encoding getEncoding() const { return _encoding; }
 
-        void setText(const unsigned char* text, int length = -1);
-
         std::vector<int>::const_iterator begin() const { return _unicodeText.begin(); } 
         std::vector<int>::const_iterator end() const { return _unicodeText.end(); } 
 
     protected:
     
+        friend class Text;
+    
+        std::string convertWideString(const char* text);
+        std::string convertWideString(const wchar_t* text);
+        void setText(const unsigned char* text, int length = -1);
         int getNextCharacter(const unsigned char*& charString) const;
         
         /// This method will extract any ZWNBSP signature at the start of the string
diff --git a/include/osgText/Text b/include/osgText/Text
index a4a10fb87..96d684ccc 100644
--- a/include/osgText/Text
+++ b/include/osgText/Text
@@ -123,6 +123,7 @@ class OSGTEXT_EXPORT Text : public osg::Drawable
         void setText(const char* text);
         void setText(const std::string& text);
         const std::string& getText() const { return _text; }
+        void setText(const wchar_t* text);
 
         virtual bool supports(PrimitiveFunctor& pf) const;
         virtual void accept(PrimitiveFunctor& pf) const;
diff --git a/src/osgText/EncodedText.cpp b/src/osgText/EncodedText.cpp
index 8d8846cbe..929fb12bf 100644
--- a/src/osgText/EncodedText.cpp
+++ b/src/osgText/EncodedText.cpp
@@ -231,3 +231,28 @@ void EncodedText::setOverrideEncoding(EncodedText::Encoding encoding)
         //NB As the original text is not cached we cannot confirm any ENCODING_SIGNATURE until text is set again
     }
 }
+
+std::string EncodedText::convertWideString(const wchar_t* text)
+{
+    std::string utf8string;
+    const wchar_t* pChars = text;
+    int currentChar = *pChars;
+    while (currentChar)
+    {
+        if (currentChar < 0x80)
+            utf8string+=(char)currentChar;
+        else if (currentChar < 0x800)
+        {
+            utf8string+=(char)(0xc0 | (currentChar>>6));
+            utf8string+=(char)(0x80 | currentChar & 0x3f);
+        }
+        else
+        {
+            utf8string+=(char)(0xe0 | (currentChar>>12));
+            utf8string+=(char)(0x80 | (currentChar>>6) & 0x3f);
+            utf8string+=(char)(0x80 | currentChar & 0x3f);
+        }
+        currentChar = *(++pChars);
+    }
+    return utf8string;
+}
diff --git a/src/osgText/Text.cpp b/src/osgText/Text.cpp
index 9443ac2cd..b6f58ac45 100644
--- a/src/osgText/Text.cpp
+++ b/src/osgText/Text.cpp
@@ -545,5 +545,15 @@ setText(const std::string& text)
     _initAlignment=false;
     _encodedText->setText((const unsigned char*)_text.data(),_text.size());
 }
+
+void Text::
+setText(const wchar_t* text)
+{ 
+    _encodedText->setOverrideEncoding(EncodedText::ENCODING_UTF8);
+    _text=_encodedText->convertWideString(text); 
+    _initAlignment=false;
+    _encodedText->setText((const unsigned char*)_text.data(),_text.size());
+}
+
 // Text
 ///////////////////////////////////////////////////////////////////////////////