Add HtmlWriterHelper to svtools.

Change-Id: I4d96402cc0fa86d83fe0ade314b84bff86d7db97

include/svtools/htmlout.hxx

@@ -26,6 +26,8 @@
 #include <rtl/string.hxx>
 #include <svl/macitem.hxx>
 
+#include "HtmlWriter.hxx"
+
 class Color;
 class ImageMap;
 class SvStream;
@@ -104,6 +106,11 @@ struct HTMLOutFuncs
                 OUString *pNonConvertableChars = 0);
 };
 
+struct HtmlWriterHelper
+{
+    SVT_DLLPUBLIC static void applyColor( HtmlWriter& rHtmlWriter, OString aAttributeName, const Color& rColor);
+};
+
 #endif
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

svtools/source/svhtml/htmlout.cxx

@@ -32,6 +32,8 @@
 #include <svtools/imappoly.hxx>
 #include "svl/urihelper.hxx"
 
+#include <sstream>
+
 #define TXTCONV_BUFFER_SIZE 20
 
 HTMLOutContext::HTMLOutContext( rtl_TextEncoding eDestEnc )
@@ -975,4 +977,28 @@ OString HTMLOutFuncs::CreateTableDataOptionsValNum(
     return aStrTD.makeStringAndClear();
 }
 
+void HtmlWriterHelper::applyColor(HtmlWriter& rHtmlWriter, OString aAttributeName, const Color& rColor)
+{
+    OStringBuffer sBuffer;
+
+    if( rColor.GetColor() == COL_AUTO )
+    {
+        sBuffer.append("#000000");
+    }
+    else
+    {
+        sBuffer.append('#');
+        std::ostringstream sStringStream;
+        sStringStream
+            << std::right
+            << std::setfill('0')
+            << std::setw(6)
+            << std::hex
+            << rColor.GetRGBColor();
+        sBuffer.append(sStringStream.str().c_str());
+    }
+
+    rHtmlWriter.attribute(aAttributeName, sBuffer.makeStringAndClear());
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */