Use custom upchar and lochar by default due to accents in font files.

src/framework/stdext/string.cpp

@@ -101,12 +101,12 @@ std::string utf8_to_latin1(uchar *utf8)
 
 void tolower(std::string& str)
 {
-    boost::to_lower(str);
+    std::transform(str.begin(), str.end(), str.begin(), lochar);
 }
 
 void toupper(std::string& str)
 {
-    boost::to_upper(str);
+    std::transform(str.begin(), str.end(), str.begin(), upchar);
 }
 
 void trim(std::string& str)
@@ -116,14 +116,16 @@ void trim(std::string& str)
 
 char upchar(char c)
 {
-#if defined(__GNUC__) && __GNUC__ >= 3
-    return ::toupper(c); // use the one from global scope "ctype.h"
-#else
-    if((c >= 97 && c <= 122) || (c <= -1 && c >= -32))
+    if((c >= 97 && c <= 122) || (uchar)c >= 224)
         c -= 32;
-
     return c;
-#endif
+}
+
+char lochar(char c)
+{
+    if((c >= 65 && c <= 90) || ((uchar)c >= 192 && (uchar)c <= 223))
+        c += 32;
+    return c;
 }
 
 void ucwords(std::string& str)

src/framework/stdext/string.h

@@ -48,6 +48,7 @@ void toupper(std::string& str);
 void trim(std::string& str);
 void ucwords(std::string& str);
 char upchar(char c);
+char lochar(char c);
 bool ends_with(const std::string& str, const std::string& test);
 bool starts_with(const std::string& str, const std::string& test);
 void replace_all(std::string& str, const std::string& search, const std::string& replacement);

src/framework/ui/uiwidgettext.cpp

@@ -108,7 +108,7 @@ void UIWidget::onFontChange(const std::string& font)
 void UIWidget::setText(std::string text)
 {
     if(m_textOnlyUpperCase)
-        std::transform(text.begin(), text.end(), text.begin(), toupper);
+        stdext::toupper(text);
 
     if(m_text == text)
         return;