tdf#90133 Extend ODF: variable decimal in scientific format

Variable decimal is only saved in ODF for number, and do not consider
partial variable decimal: 0.0## is saved as 0.000
This patch extend ODF with loext:min-decimal-digit for number format and
scientific format

Change-Id: I5022458da47bbd33c3e195c280e75c43faca5f8d
Reviewed-on: https://gerrit.libreoffice.org/15135
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>

2 files changed, 54 insertions, 23 deletions

diff --git a/xmloff/source/style/xmlnumfe.cxx b/xmloff/source/style/xmlnumfe.cxx
index 2c0bab4f7352..6b7142fa366a 100644
--- a/xmloff/source/style/xmlnumfe.cxx
+++ b/xmloff/source/style/xmlnumfe.cxx
@@ -556,8 +556,8 @@ void SvXMLNumFmtExport::WriteAMPMElement_Impl()
 //  numbers
 
 void SvXMLNumFmtExport::WriteNumberElement_Impl(
-                            sal_Int32 nDecimals, sal_Int32 nInteger,
-                            const OUString& rDashStr, bool bVarDecimals,
+                            sal_Int32 nDecimals, sal_Int32 nMinDecimals,
+                            sal_Int32 nInteger, const OUString& rDashStr,
                             bool bGrouping, sal_Int32 nTrailingThousands,
                             const SvXMLEmbeddedTextEntryArr& rEmbeddedEntries )
 {
@@ -570,6 +570,12 @@ void SvXMLNumFmtExport::WriteNumberElement_Impl(
                               OUString::number( nDecimals ) );
     }
 
+    if ( nMinDecimals >= 0 )   // negative = automatic
+    {
+        rExport.AddAttribute( XML_NAMESPACE_LO_EXT, XML_MIN_DECIMAL_DIGITS,
+                              OUString::number( nMinDecimals ) );
+    }
+
     //  integer digits
     if ( nInteger >= 0 )    // negative = automatic
     {
@@ -578,9 +584,9 @@ void SvXMLNumFmtExport::WriteNumberElement_Impl(
     }
 
     //  decimal replacement (dashes) or variable decimals (#)
-    if ( !rDashStr.isEmpty() || bVarDecimals )
+    if ( !rDashStr.isEmpty() ||  nMinDecimals < nDecimals )
     {
-        //  variable decimals means an empty replacement string
+        // full variable decimals means an empty replacement string
         rExport.AddAttribute( XML_NAMESPACE_NUMBER, XML_DECIMAL_REPLACEMENT,
                               rDashStr );
     }
@@ -633,7 +639,7 @@ void SvXMLNumFmtExport::WriteNumberElement_Impl(
 }
 
 void SvXMLNumFmtExport::WriteScientificElement_Impl(
-                            sal_Int32 nDecimals, sal_Int32 nInteger,
+                            sal_Int32 nDecimals, sal_Int32 nMinDecimals, sal_Int32 nInteger,
                             bool bGrouping, sal_Int32 nExp, sal_Int32 nExpInterval, bool bExpSign )
 {
     FinishTextElement_Impl();
@@ -645,6 +651,12 @@ void SvXMLNumFmtExport::WriteScientificElement_Impl(
                               OUString::number( nDecimals ) );
     }
 
+    if ( nMinDecimals >= 0 )   // negative = automatic
+    {
+        rExport.AddAttribute( XML_NAMESPACE_LO_EXT, XML_MIN_DECIMAL_DIGITS,
+                              OUString::number( nMinDecimals ) );
+    }
+
     //  integer digits
     if ( nInteger >= 0 )    // negative = automatic
     {
@@ -1154,7 +1166,7 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
     if ( eBuiltIn == NF_NUMBER_STANDARD )
     {
         //  default number format contains just one number element
-        WriteNumberElement_Impl( -1, 1, OUString(), false, false, 0, aEmbeddedEntries );
+        WriteNumberElement_Impl( -1, -1, 1, OUString(), false, 0, aEmbeddedEntries );
         bAnyContent = true;
     }
     else if ( eBuiltIn == NF_BOOLEAN )
@@ -1168,7 +1180,6 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
         //  first loop to collect attributes
 
         bool bDecDashes  = false;
-        bool bVarDecimals = false;
         bool bExpFound   = false;
         bool bCurrFound  = false;
         bool bInInteger  = true;
@@ -1176,6 +1187,7 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
         sal_Int32 nExpDigits = 0;
         sal_Int32 nIntegerSymbols = 0;          // for embedded-text, including "#"
         sal_Int32 nTrailingThousands = 0;       // thousands-separators after all digits
+        sal_Int32 nMinDecimals = nPrecision;
         OUString sCurrExt;
         OUString aCalendar;
         sal_uInt16 nPos = 0;
@@ -1195,11 +1207,12 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
                         nExpDigits += pElemStr->getLength();
                     else if ( !bDecDashes && pElemStr && (*pElemStr)[0] == '-' )
                         bDecDashes = true;
-                    else if ( !bVarDecimals && !bInInteger && pElemStr && (*pElemStr)[0] == '#' )
+                    else if ( !bInInteger && pElemStr )
                     {
-                        //  If the decimal digits string starts with a '#', variable
-                        //  decimals is assumed (for 0.###, but not 0.0##).
-                        bVarDecimals = true;
+                        for ( sal_Int32 i = pElemStr->getLength()-1; i >= 0 && (*pElemStr)[i] == '#'; i-- )
+                        {
+                            nMinDecimals --;
+                        }
                     }
                     if ( bInInteger && pElemStr )
                         nIntegerSymbols += pElemStr->getLength();
@@ -1352,7 +1365,7 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
                     }
                     break;
                 case NF_KEY_GENERAL :
-                        WriteNumberElement_Impl( -1, 1, OUString(), false, false, 0, aEmbeddedEntries );
+                        WriteNumberElement_Impl( -1, -1, 1, OUString(), false, 0, aEmbeddedEntries );
                     break;
                 case NF_KEY_CCC:
                     if (pElemStr)
@@ -1419,8 +1432,8 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
                                     if (bDecDashes && nPrecision > 0)
                                         comphelper::string::padToLength(sDashStr, nPrecision, '-');
 
-                                    WriteNumberElement_Impl(nDecimals, nInteger, sDashStr.makeStringAndClear(),
-                                        bVarDecimals, bThousand, nTrailingThousands, aEmbeddedEntries);
+                                    WriteNumberElement_Impl(nDecimals, nMinDecimals, nInteger, sDashStr.makeStringAndClear(),
+                                        bThousand, nTrailingThousands, aEmbeddedEntries);
                                     bAnyContent = true;
                                 }
                                 break;
@@ -1428,7 +1441,7 @@ void SvXMLNumFmtExport::ExportPart_Impl( const SvNumberformat& rFormat, sal_uInt
                                 // #i43959# for scientific numbers, count all integer symbols ("0" and "#")
                                 // as integer digits: use nIntegerSymbols instead of nLeading
                                 // nIntegerSymbols represents exponent interval (for engineering notation)
-                                WriteScientificElement_Impl( nPrecision, nLeading, bThousand, nExpDigits, nIntegerSymbols, bExpSign );
+                                WriteScientificElement_Impl( nPrecision, nMinDecimals, nLeading, bThousand, nExpDigits, nIntegerSymbols, bExpSign );
                                 bAnyContent = true;
                                 break;
                             case css::util::NumberFormat::FRACTION:
diff --git a/xmloff/source/style/xmlnumfi.cxx b/xmloff/source/style/xmlnumfi.cxx
index 02f31cd98a04..d5a44c37d84e 100644
--- a/xmloff/source/style/xmlnumfi.cxx
+++ b/xmloff/source/style/xmlnumfi.cxx
@@ -114,17 +114,18 @@ struct SvXMLNumberInfo
     sal_Int32   nNumerDigits;
     sal_Int32   nDenomDigits;
     sal_Int32   nFracDenominator;
+    sal_Int32   nMinDecimalDigits;
     bool        bGrouping;
     bool        bDecReplace;
-    bool        bVarDecimals;
     bool        bExpSign;
     double      fDisplayFactor;
     SvXMLEmbeddedElementArr aEmbeddedElements;
 
     SvXMLNumberInfo()
     {
-        nDecimals = nInteger = nExpDigits = nExpInterval = nNumerDigits = nDenomDigits = nFracDenominator = -1;
-        bGrouping = bDecReplace = bVarDecimals = false;
+        nDecimals = nInteger = nExpDigits = nExpInterval = nNumerDigits = nDenomDigits =
+            nFracDenominator = nMinDecimalDigits = -1;
+        bGrouping = bDecReplace = false;
         bExpSign = true;
         fDisplayFactor = 1.0;
     }
@@ -273,6 +274,7 @@ enum SvXMLStyleAttrTokens
 enum SvXMLStyleElemAttrTokens
 {
     XML_TOK_ELEM_ATTR_DECIMAL_PLACES,
+    XML_TOK_ELEM_ATTR_MIN_DECIMAL_DIGITS,
     XML_TOK_ELEM_ATTR_MIN_INTEGER_DIGITS,
     XML_TOK_ELEM_ATTR_GROUPING,
     XML_TOK_ELEM_ATTR_DISPLAY_FACTOR,
@@ -570,6 +572,7 @@ const SvXMLTokenMap& SvXMLNumImpData::GetStyleElemAttrTokenMap()
         {
             //  attributes for an element within a style
             { XML_NAMESPACE_NUMBER, XML_DECIMAL_PLACES,          XML_TOK_ELEM_ATTR_DECIMAL_PLACES       },
+            { XML_NAMESPACE_LO_EXT, XML_MIN_DECIMAL_DIGITS,      XML_TOK_ELEM_ATTR_MIN_DECIMAL_DIGITS   },
             { XML_NAMESPACE_NUMBER, XML_MIN_INTEGER_DIGITS,      XML_TOK_ELEM_ATTR_MIN_INTEGER_DIGITS   },
             { XML_NAMESPACE_NUMBER, XML_GROUPING,                XML_TOK_ELEM_ATTR_GROUPING             },
             { XML_NAMESPACE_NUMBER, XML_DISPLAY_FACTOR,          XML_TOK_ELEM_ATTR_DISPLAY_FACTOR       },
@@ -924,6 +927,7 @@ SvXMLNumFmtElementContext::SvXMLNumFmtElementContext( SvXMLImport& rImport,
     LanguageTagODF aLanguageTagODF;
     sal_Int32 nAttrVal;
     bool bAttrBool(false);
+    bool bVarDecimals = false;
     sal_uInt16 nAttrEnum;
     double fAttrDouble;
 
@@ -944,6 +948,10 @@ SvXMLNumFmtElementContext::SvXMLNumFmtElementContext( SvXMLImport& rImport,
                 if (::sax::Converter::convertNumber( nAttrVal, sValue, 0 ))
                     aNumInfo.nDecimals = std::min<sal_Int32>(nAttrVal, MAX_SECOND_DIGITS);
                 break;
+            case XML_TOK_ELEM_ATTR_MIN_DECIMAL_DIGITS:
+                if (::sax::Converter::convertNumber( nAttrVal, sValue, 0 ))
+                    aNumInfo.nMinDecimalDigits = nAttrVal;
+                break;
             case XML_TOK_ELEM_ATTR_MIN_INTEGER_DIGITS:
                 if (::sax::Converter::convertNumber( nAttrVal, sValue, 0 ))
                     aNumInfo.nInteger = nAttrVal;
@@ -960,7 +968,7 @@ SvXMLNumFmtElementContext::SvXMLNumFmtElementContext( SvXMLImport& rImport,
                 if ( !sValue.isEmpty() )
                     aNumInfo.bDecReplace = true;    // only a default string is supported
                 else
-                    aNumInfo.bVarDecimals = true;   // empty replacement string: variable decimals
+                    bVarDecimals = true;   // empty replacement string: variable decimals
                 break;
             case XML_TOK_ELEM_ATTR_MIN_EXPONENT_DIGITS:
                 if (::sax::Converter::convertNumber( nAttrVal, sValue, 0 ))
@@ -1011,6 +1019,13 @@ SvXMLNumFmtElementContext::SvXMLNumFmtElementContext( SvXMLImport& rImport,
                 break;
         }
     }
+    if ( aNumInfo.nMinDecimalDigits == -1)
+    {
+        if ( bVarDecimals )
+            aNumInfo.nMinDecimalDigits = 0;
+        else
+            aNumInfo.nMinDecimalDigits = aNumInfo.nDecimals;
+    }
 
     if ( !aLanguageTagODF.isEmpty() )
     {
@@ -1799,7 +1814,9 @@ void SvXMLNumFormatContext::AddNumber( const SvXMLNumberInfo& rInfo )
     }
 
     sal_uInt16 nGenPrec = nPrec;
-    if ( rInfo.bDecReplace || rInfo.bVarDecimals )
+    if ( rInfo.nMinDecimalDigits >= 0 )
+        nGenPrec = rInfo.nMinDecimalDigits;
+    if ( rInfo.bDecReplace )
         nGenPrec = 0;               // generate format without decimals...
 
     bool bGrouping = rInfo.bGrouping;
@@ -1892,13 +1909,14 @@ void SvXMLNumFormatContext::AddNumber( const SvXMLNumberInfo& rInfo )
 
     aFormatCode.append( aNumStr.makeStringAndClear() );
 
-    if ( ( rInfo.bDecReplace || rInfo.bVarDecimals ) && nPrec )     // add decimal replacement (dashes)
+    if ( ( rInfo.bDecReplace || rInfo.nMinDecimalDigits < rInfo.nDecimals ) && nPrec )     // add decimal replacement (dashes)
     {
         //  add dashes for explicit decimal replacement, # for variable decimals
         sal_Unicode cAdd = rInfo.bDecReplace ? '-' : '#';
 
-        aFormatCode.append( pData->GetLocaleData( nFormatLang ).getNumDecimalSep() );
-        for ( sal_uInt16 i=0; i<nPrec; i++)
+        if ( rInfo.nMinDecimalDigits == 0 )
+            aFormatCode.append( pData->GetLocaleData( nFormatLang ).getNumDecimalSep() );
+        for ( sal_uInt16 i=rInfo.nMinDecimalDigits; i<nPrec; i++)
             aFormatCode.append( cAdd );
     }