[glom] Make the default precision used for stringstreams available for libglom users

[Michael Hasselmann <mikhas src gnome org>]

commit c31f7199017df64559d468665a055149c100ff5c
Author: Michael Hasselmann <michaelh openismus com>
Date:   Thu Jan 14 12:14:53 2010 +0100

    Make the default precision used for stringstreams available for libglom users
    
    * glom/libglom/data_structure/glomconversions.[h|cc]
    (get_stringstream_precision_default): Wrap the constant used into a function
    and export it in the headers. Users of libglom need it to show the same
    precision for Glom's numeric type.

 ChangeLog                                      |   10 ++++++++++
 glom/libglom/data_structure/glomconversions.cc |   14 +++++++++-----
 glom/libglom/data_structure/glomconversions.h  |    2 ++
 3 files changed, 21 insertions(+), 5 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 6d56ef3..2c767a4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2010-01-14  Michael Hasselmann  <michaelh openismus com>
+
+	Make the default precision used for stringstreams available for libglom users
+
+	* glom/libglom/data_structure/glomconversions.[h|cc]
+	(get_stringstream_precision_default): Wrap the constant used into a function
+	and export it in the headers. Users of libglom need it to show the same
+	precision for Glom's numeric type.
+
+
 2010-01-12  Murray Cumming  <murrayc murrayc com>
 
 	Music Collection Example: Changed a layout.
diff --git a/glom/libglom/data_structure/glomconversions.cc b/glom/libglom/data_structure/glomconversions.cc
index 95a0fe5..480ca9b 100644
--- a/glom/libglom/data_structure/glomconversions.cc
+++ b/glom/libglom/data_structure/glomconversions.cc
@@ -55,9 +55,11 @@ namespace
 namespace Glom
 {
 
-// Increase the number of digits (even before the decimal point) we can 
-// have until it uses the awkward e syntax. The default seems to be 7
-static const int STRINGSTREAM_PRECISION_DEFAULT = 15;
+int Conversions::get_stringstream_precision_default()
+{
+    static const int stringstream_precision_default = 15;
+    return stringstream_precision_default;
+}
 
 Glib::ustring Conversions::format_time(const tm& tm_data)
 {
@@ -431,7 +433,7 @@ Glib::ustring Conversions::get_text_for_gda_value(Field::glom_field_type glom_ty
       {
         //Increase the number of digits (even before the decimal point) we can 
         //have until it uses the awkward e syntax. The default seems to be 7.
-        another_stream << std::setprecision(STRINGSTREAM_PRECISION_DEFAULT);
+        another_stream << std::setprecision(get_stringstream_precision_default());
       }
 
       if(!(numeric_format.m_currency_symbol.empty()))
@@ -602,7 +604,9 @@ Gnome::Gda::Value Conversions::parse_value(Field::glom_field_type glom_type, con
 
     std::stringstream clocale_stream;
     clocale_stream.imbue( std::locale::classic() ); //The C locale.
-    clocale_stream << std::setprecision(STRINGSTREAM_PRECISION_DEFAULT); //Avoid the e syntax. Normally this happens afer 7 digits, with loss of precision. TODO: Handle more.
+
+    //Avoid the e syntax. Normally this happens afer 7 digits, with loss of precision. TODO: Handle more.
+    clocale_stream << std::setprecision(get_stringstream_precision_default());
     clocale_stream << the_number;
     const Glib::ustring number_canonical_text = clocale_stream.str(); //Avoid << because it does implicit character conversion (though that might not be a problem here. Not sure). murrayc
     //std::cout << "  DEBUG: number_canonical_text=" << number_canonical_text << std::endl;  
diff --git a/glom/libglom/data_structure/glomconversions.h b/glom/libglom/data_structure/glomconversions.h
index 868de48..dc79071 100644
--- a/glom/libglom/data_structure/glomconversions.h
+++ b/glom/libglom/data_structure/glomconversions.h
@@ -32,6 +32,8 @@ namespace Glom
 
 namespace Conversions
 {
+  int get_stringstream_precision_default();
+
   ///Get text for display to the user.
   Glib::ustring get_text_for_gda_value(Field::glom_field_type glom_type, const Gnome::Gda::Value& value, const NumericFormat& numeric_format = NumericFormat());
   Glib::ustring get_text_for_gda_value(Field::glom_field_type glom_type, const Gnome::Gda::Value& value, const std::locale& locale, const NumericFormat& numeric_format = NumericFormat(), bool iso_format = false);