Import cell borders as best as we can from orcus.

This is subject to the infamous Excel to Calc cell border mapping
fiasco.  The mapping is not perfect and there is certainly room for
improvement.

Change-Id: Ie224c8e08e6c0b8f13311460acbd371bd65a145f
Reviewed-on: https://gerrit.libreoffice.org/49266Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Kohei Yoshida <libreoffice@kohei.us>

sc/source/filter/orcus/interface.cxx

@@ -54,6 +54,8 @@
 #include <tools/colordata.hxx>
 #include <tools/fontenum.hxx>
 
+#include <stylesbuffer.hxx>
+
 using namespace com::sun::star;
 
 namespace os = orcus::spreadsheet;
@@ -1174,7 +1176,7 @@ ScOrcusStyles::border::border():
 
 ScOrcusStyles::border::border_line::border_line():
     meStyle(SvxBorderLineStyle::SOLID),
-    maColor(COL_WHITE),
+    maColor(COL_BLACK),
     mnWidth(0)
 {
 }
@@ -1617,39 +1619,62 @@ void ScOrcusStyles::set_border_style(
     border::border_line& current_line = maCurrentBorder.border_lines[dir];
     switch (style)
     {
-        case orcus::spreadsheet::border_style_t::unknown:
-        case orcus::spreadsheet::border_style_t::none:
         case orcus::spreadsheet::border_style_t::solid:
+            current_line.meStyle = SvxBorderLineStyle::SOLID;
+            current_line.mnWidth = oox::xls::API_LINE_THIN;
+            break;
         case orcus::spreadsheet::border_style_t::hair:
+            current_line.meStyle = SvxBorderLineStyle::SOLID;
+            current_line.mnWidth = oox::xls::API_LINE_HAIR;
+            break;
         case orcus::spreadsheet::border_style_t::medium:
+            current_line.meStyle = SvxBorderLineStyle::SOLID;
+            current_line.mnWidth = oox::xls::API_LINE_MEDIUM;
+            break;
         case orcus::spreadsheet::border_style_t::thick:
+            current_line.meStyle = SvxBorderLineStyle::SOLID;
+            current_line.mnWidth = oox::xls::API_LINE_THICK;
+            break;
         case orcus::spreadsheet::border_style_t::thin:
             current_line.meStyle = SvxBorderLineStyle::SOLID;
+            current_line.mnWidth = oox::xls::API_LINE_THIN;
             break;
         case orcus::spreadsheet::border_style_t::dash_dot:
             current_line.meStyle = SvxBorderLineStyle::DASH_DOT;
+            current_line.mnWidth = oox::xls::API_LINE_THIN;
             break;
         case orcus::spreadsheet::border_style_t::dash_dot_dot:
             current_line.meStyle = SvxBorderLineStyle::DASH_DOT_DOT;
+            current_line.mnWidth = oox::xls::API_LINE_THIN;
             break;
         case orcus::spreadsheet::border_style_t::dashed:
             current_line.meStyle = SvxBorderLineStyle::DASHED;
+            current_line.mnWidth = oox::xls::API_LINE_THIN;
             break;
         case orcus::spreadsheet::border_style_t::dotted:
             current_line.meStyle = SvxBorderLineStyle::DOTTED;
+            current_line.mnWidth = oox::xls::API_LINE_THIN;
             break;
         case orcus::spreadsheet::border_style_t::double_border:
             current_line.meStyle = SvxBorderLineStyle::DOUBLE;
+            current_line.mnWidth = oox::xls::API_LINE_THICK;
             break;
         case orcus::spreadsheet::border_style_t::medium_dash_dot:
         case orcus::spreadsheet::border_style_t::slant_dash_dot:
             current_line.meStyle = SvxBorderLineStyle::DASH_DOT;
+            current_line.mnWidth = oox::xls::API_LINE_MEDIUM;
             break;
         case orcus::spreadsheet::border_style_t::medium_dash_dot_dot:
             current_line.meStyle = SvxBorderLineStyle::DASH_DOT_DOT;
+            current_line.mnWidth = oox::xls::API_LINE_MEDIUM;
             break;
         case orcus::spreadsheet::border_style_t::medium_dashed:
             current_line.meStyle = SvxBorderLineStyle::DASHED;
+            current_line.mnWidth = oox::xls::API_LINE_MEDIUM;
+            break;
+        case orcus::spreadsheet::border_style_t::unknown:
+        case orcus::spreadsheet::border_style_t::none:
+            current_line.mnWidth = oox::xls::API_LINE_NONE;
             break;
         default:
             ;
@@ -1658,13 +1683,13 @@ void ScOrcusStyles::set_border_style(
 }
 
 void ScOrcusStyles::set_border_color(orcus::spreadsheet::border_direction_t dir,
-            orcus::spreadsheet::color_elem_t alpha,
+            orcus::spreadsheet::color_elem_t /*alpha*/,
             orcus::spreadsheet::color_elem_t red,
             orcus::spreadsheet::color_elem_t green,
             orcus::spreadsheet::color_elem_t blue)
 {
     border::border_line& current_line = maCurrentBorder.border_lines[dir];
-    current_line.maColor = Color(alpha, red, green, blue);
+    current_line.maColor = Color(red, green, blue);
 }
 
 void ScOrcusStyles::set_border_width(orcus::spreadsheet::border_direction_t  dir, double val, orcus::length_unit_t  unit )