HTML export: optional CSS2 dot leaders in the Table of Contents

To use it, enable "Print layout" in Options->Load/Save->HTML Compatibility,
and select the HTML Document file type in the Writer Save As dialog.

Change-Id: I763ab8340a59050fd5c68677715679f41fd91fb3

sw/source/filter/html/css1atr.cxx

@@ -112,6 +112,8 @@ using editeng::SvxBorderLine;
 #define CSS1_FRMSIZE_ANYHEIGHT  0x0e
 #define CSS1_FRMSIZE_PIXEL      0x10
 
+#define DOT_LEADERS_MAX_WIDTH   18
+
 extern SwAttrFnTab aCSS1AttrFnTab;
 
 static Writer& OutCSS1_SwFmt( Writer& rWrt, const SwFmt& rFmt,
@@ -220,6 +222,48 @@ void SwHTMLWriter::OutCSS1_Property( const sal_Char *pProp,
         OutNewLine();
         sOut.append("<" + OString(OOO_STRING_SVTOOLS_HTML_style) + " " +
                     OString(OOO_STRING_SVTOOLS_HTML_O_type) + "=\"text/css\">");
+    //  Optional CSS2 code for dot leaders (dotted line between the Table of Contents titles and page numbers):
+    //  (More inforation: http://www.w3.org/Style/Examples/007/leaders.en.html)
+    //
+    //  p.leaders {
+    //      /* FIXME:
+    //         (1) dots line up vertically only in the paragraphs with the same alignation/level
+    //         (2) max-width = 18 cm instead of 80em; possible improvement with the new CSS3 calc() */
+    //      max-width: 18cm; /* note: need to overwrite max-width with max-width - border-left_of_the_actual_paragraph */
+    //      padding: 0;
+    //      overflow-x: hidden;
+    //      line-height: 120%; /* note: avoid HTML scrollbars and missing descenders of the letters */
+    //  }
+    //  p.leaders:after {
+    //      float: left;
+    //      width: 0;
+    //      white-space: nowrap;
+    //      content: ". . . . . . . . . . . . . . . . . . ...";
+    //  }
+    //  p.leaders span:first-child {
+    //      padding-right: 0.33em;
+    //      background: white;
+    //  }
+    //  p.leaders span + span {
+    //      float: right;
+    //      padding-left: 0.33em;
+    //      background: white;
+    //      position: relative;
+    //      z-index: 1
+    //  }
+
+        if (bCfgPrintLayout) {
+            sOut.append(
+                "p." + OString(sCSS2_P_CLASS_leaders) + "{max-width:" + OString::number(DOT_LEADERS_MAX_WIDTH) +
+                    "cm;padding:0;overflow-x:hidden;line-height:120%}" +
+                "p." + OString(sCSS2_P_CLASS_leaders) + ":after{float:left;width:0;white-space:nowrap;content:\"");
+                for (int i = 0; i < 100; i++ )
+                    sOut.append(". ");
+                sOut.append(
+                    "\"}p." + OString(sCSS2_P_CLASS_leaders) + " span:first-child{padding-right:0.33em;background:white}" +
+                    "p." + OString(sCSS2_P_CLASS_leaders) + " span+span{float:right;padding-left:0.33em;" +
+                    "background:white;position:relative;z-index:1}");
+        }
         Strm().WriteCharPtr( sOut.makeStringAndClear().getStr() );
 
         IncIndentLevel();
@@ -2739,7 +2783,8 @@ static Writer& OutCSS1_SvxLineSpacing( Writer& rWrt, const SfxPoolItem& rHt )
 
     if( nHeight )
         rHTMLWrt.OutCSS1_UnitProperty( sCSS1_P_line_height, (long)nHeight );
-    else if( nPrcHeight )
+    else if( nPrcHeight &&
+        !(nPrcHeight < 115 && rHTMLWrt.bParaDotLeaders )) // avoid HTML scrollbars and missing descenders
     {
         OString sHeight(OString::number(nPrcHeight) + "%");
         rHTMLWrt.OutCSS1_PropertyAscii(sCSS1_P_line_height, sHeight);
@@ -2954,6 +2999,11 @@ static Writer& OutCSS1_SvxLRSpace( Writer& rWrt, const SfxPoolItem& rHt )
     if( rHTMLWrt.nDfltLeftMargin != nLeftMargin )
     {
         rHTMLWrt.OutCSS1_UnitProperty( sCSS1_P_margin_left, nLeftMargin );
+
+        // max-width = max-width - margin-left for TOC paragraphs with dot leaders
+        if( rHTMLWrt.bParaDotLeaders )
+            rHTMLWrt.OutCSS1_UnitProperty( sCSS1_P_max_width, (long)(DOT_LEADERS_MAX_WIDTH/2.54*72*20) - nLeftMargin );
+
     }
 
     if( rHTMLWrt.nDfltRightMargin != rLRItem.GetRight() )

sw/source/filter/html/css1kywd.cxx

@@ -189,6 +189,7 @@ const sal_Char* sCSS1_PV_inset = "inset";
 const sal_Char* sCSS1_PV_outset = "outset";
 
 const sal_Char* sCSS1_P_width = "width";
+const sal_Char* sCSS1_P_max_width = "max-width";
 
 const sal_Char* sCSS1_P_height = "height";
 

sw/source/filter/html/css1kywd.hxx

@@ -191,6 +191,7 @@ extern const sal_Char* sCSS1_PV_inset;
 extern const sal_Char* sCSS1_PV_outset;
 
 extern const sal_Char* sCSS1_P_width;
+extern const sal_Char* sCSS1_P_max_width;
 
 extern const sal_Char* sCSS1_P_height;
 

sw/source/filter/html/htmlatr.cxx

@@ -948,12 +948,23 @@ void OutHTML_SwFmt( Writer& rWrt, const SwFmt& rFmt,
         if( !rHWrt.bNoAlign && pAdjItem )
             OutHTML_SvxAdjust( rWrt, *pAdjItem );
 
+        rHWrt.bParaDotLeaders = bPara && rHWrt.bCfgPrintLayout && rHWrt.indexOfDotLeaders(
+                pTxtNd->GetAnyFmtColl().GetPoolFmtId(), pTxtNd->GetTxt()) > -1;
+
         // und nun ggf. noch die STYLE-Option
         if( rHWrt.bCfgOutStyles && rInfo.pItemSet && !bNoStyle)
         {
             OutCSS1_ParaTagStyleOpt( rWrt, *rInfo.pItemSet );
         }
 
+        if (rHWrt.bParaDotLeaders) {
+            sOut += " " + OString(OOO_STRING_SVTOOLS_HTML_O_class) + "=\"" +
+                OString(sCSS2_P_CLASS_leaders) + "\"><" +
+                OString(OOO_STRING_SVTOOLS_HTML_O_span);
+            rWrt.Strm().WriteOString( sOut );
+            sOut = "";
+        }
+
         rWrt.Strm().WriteChar( '>' );
 
         // Soll ein </P> geschrieben wenrden
@@ -2300,6 +2311,12 @@ Writer& OutHTML_SwTxtNode( Writer& rWrt, const SwCntntNode& rNode )
         aFullText += aFootEndNoteSym;
     }
 
+    // Table of Contents or other paragraph with dot leaders?
+    sal_Int32 nIndexTab = rHTMLWrt.indexOfDotLeaders( nPoolId, rStr );
+    if (nIndexTab > -1)
+        // skip part after the tabulator (page number)
+        nEnd = nIndexTab;
+
     // gibt es harte Attribute, die als Tags geschrieben werden muessen?
     aFullText += rStr;
     HTMLEndPosLst aEndPosLst( rWrt.pDoc, rHTMLWrt.pTemplate,
@@ -2630,6 +2647,12 @@ Writer& OutHTML_SwTxtNode( Writer& rWrt, const SwCntntNode& rNode )
         nEnd > 0 && ' ' == rStr[nEnd-1] )
         rHTMLWrt.bLFPossible = true;
 
+    // dot leaders: print the skipped page number in a different span element
+    if (nIndexTab > -1) {
+        OString sOut = OUStringToOString(rStr.copy(nIndexTab + 1), RTL_TEXTENCODING_ASCII_US);
+        rWrt.Strm().WriteOString( "</span><span>" + sOut + "</span>" );
+    }
+
     rHTMLWrt.bTagOn = false;
     OutHTML_SwFmtOff( rWrt, aFmtInfo );
 

sw/source/filter/html/wrthtml.cxx

@@ -153,6 +153,8 @@ SwHTMLWriter::SwHTMLWriter( const OUString& rBaseURL )
     , bCfgNetscape4( false )
     , mbSkipImages(false)
     , mbSkipHeaderFooter(false)
+    , bCfgPrintLayout( false )
+    , bParaDotLeaders( false )
 {
     SetBaseURL(rBaseURL);
 }
@@ -254,6 +256,8 @@ sal_uLong SwHTMLWriter::WriteStream()
     bCfgFormFeed = !IsHTMLMode(HTMLMODE_PRINT_EXT);
     bCfgCpyLinkedGrfs = rHtmlOptions.IsSaveGraphicsLocal();
 
+    bCfgPrintLayout = rHtmlOptions.IsPrintLayoutExtension();
+
     // die HTML-Vorlage holen
     bool bOldHTMLMode = false;
     sal_uInt16 nOldTxtFmtCollCnt = 0, nOldCharFmtCnt = 0;
@@ -1372,6 +1376,24 @@ sal_uInt16 SwHTMLWriter::GetHTMLFontSize( sal_uInt32 nHeight ) const
     return nSize;
 }
 
+// Paragraphs with Table of Contents and other index styles will be typeset with
+// dot leaders at the position of the last tabulator in PrintLayout (CSS2) mode
+sal_Int32 SwHTMLWriter::indexOfDotLeaders( sal_uInt16 nPoolId, const OUString& rStr )
+{
+    if (bCfgPrintLayout && ((nPoolId >= RES_POOLCOLL_TOX_CNTNT1 && nPoolId <= RES_POOLCOLL_TOX_CNTNT5) ||
+        (nPoolId >= RES_POOLCOLL_TOX_IDX1 && nPoolId <= RES_POOLCOLL_TOX_IDX3) ||
+        (nPoolId >= RES_POOLCOLL_TOX_USER1 && nPoolId <= RES_POOLCOLL_TOX_CNTNT10) ||
+        nPoolId == RES_POOLCOLL_TOX_ILLUS1 || nPoolId == RES_POOLCOLL_TOX_TABLES1 ||
+        nPoolId == RES_POOLCOLL_TOX_OBJECT1 ||
+        (nPoolId >= RES_POOLCOLL_TOX_AUTHORITIES1 && nPoolId <= RES_POOLCOLL_TOX_USER10))) {
+             sal_Int32 i = rStr.lastIndexOf('\t');
+             // there are only ASCII (Latin-1) characters after the tabulator
+             if (i > -1 && OUStringToOString(rStr.copy(i + 1), RTL_TEXTENCODING_ASCII_US).indexOf('?') == -1)
+                 return i;
+    }
+    return -1;
+}
+
 // Struktur speichert die aktuellen Daten des Writers zwischen, um
 // einen anderen Dokument-Teil auszugeben, wie z.B. Header/Footer
 HTMLSaveData::HTMLSaveData(SwHTMLWriter& rWriter, sal_uLong nStt,

sw/source/filter/html/wrthtml.hxx

@@ -402,7 +402,10 @@ public:
     /// If HTML header and footer should be written as well, or just the content itself.
     bool mbSkipHeaderFooter : 1;
 
-    // 23
+#define sCSS2_P_CLASS_leaders "leaders"
+    bool bCfgPrintLayout : 1;       // PrintLayout option for TOC dot leaders
+    bool bParaDotLeaders : 1;       // for TOC dot leaders
+    // 25
 
     SwHTMLWriter( const OUString& rBaseURL );
     virtual ~SwHTMLWriter();
@@ -576,6 +579,8 @@ public:
     static sal_uInt16 GetLangWhichIdFromScript( sal_uInt16 nScript );
 
     FieldUnit GetCSS1Unit() const { return eCSS1Unit; }
+
+    sal_Int32 indexOfDotLeaders( sal_uInt16 nPoolId, const OUString& rTxt );
 };
 
 inline bool SwHTMLWriter::IsCSS1Source( sal_uInt16 n ) const