tdf#159566: match 'central' dominant-baseline to 'middle'

Inkscape also does it the same way

Change-Id: I3e1cea091e7314886bbc9135c55698892239bec7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163006
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
(cherry picked from commit 358061b4a480ea763ea541094cef2112f917eb93)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163013
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
diff --git a/svgio/inc/svgstyleattributes.hxx b/svgio/inc/svgstyleattributes.hxx
index 6078194..4516773 100644
--- a/svgio/inc/svgstyleattributes.hxx
+++ b/svgio/inc/svgstyleattributes.hxx
@@ -166,7 +166,8 @@ namespace svgio::svgreader
        {
            Auto,
            Middle,
            Hanging
            Hanging,
            Central
        };

        enum class Visibility
diff --git a/svgio/qa/cppunit/SvgImportTest.cxx b/svgio/qa/cppunit/SvgImportTest.cxx
index d99e56b..9324ad1 100644
--- a/svgio/qa/cppunit/SvgImportTest.cxx
+++ b/svgio/qa/cppunit/SvgImportTest.cxx
@@ -764,7 +764,7 @@ CPPUNIT_TEST_FIXTURE(Test, testTdf156834)

    CPPUNIT_ASSERT (pDocument);

    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion"_ostr, 3);
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion"_ostr, 4);
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]"_ostr, "text"_ostr, "Auto");
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]"_ostr, "x"_ostr, "30");
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[1]"_ostr, "y"_ostr, "20");
@@ -776,6 +776,10 @@ CPPUNIT_TEST_FIXTURE(Test, testTdf156834)
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]"_ostr, "text"_ostr, "Hanging");
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]"_ostr, "x"_ostr, "30");
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[3]"_ostr, "y"_ostr, "94");

    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]"_ostr, "text"_ostr, "Central");
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]"_ostr, "x"_ostr, "30");
    assertXPath(pDocument, "/primitive2D/transform/textsimpleportion[4]"_ostr, "y"_ostr, "116");
}

CPPUNIT_TEST_FIXTURE(Test, testTdf104339)
diff --git a/svgio/qa/cppunit/data/tdf156834.svg b/svgio/qa/cppunit/data/tdf156834.svg
index 74dc154..0ef81f9 100644
--- a/svgio/qa/cppunit/data/tdf156834.svg
+++ b/svgio/qa/cppunit/data/tdf156834.svg
@@ -1,7 +1,8 @@
<svg viewBox="0 0 200 120" xmlns="http://www.w3.org/2000/svg">
  <path d="M20,20 L180,20 M20,50 L180,50 M20,80 L180,80" stroke="grey" />
  <path d="M20,20 L180,20 M20,50 L180,50 M20,80 L180,80 M20,110 L180,110" stroke="grey" />

  <text dominant-baseline="auto" x="30" y="20" font-size="20">Auto</text>
  <text dominant-baseline="middle" x="30" y="50" font-size="20">Middle</text>
  <text dominant-baseline="Hanging" x="30" y="80" font-size="20">Hanging</text>
  <text dominant-baseline="central" x="30" y="110" font-size="20">Central</text>
</svg>
diff --git a/svgio/source/svgreader/svgcharacternode.cxx b/svgio/source/svgreader/svgcharacternode.cxx
index 7d5a2fc..02bc391 100644
--- a/svgio/source/svgreader/svgcharacternode.cxx
+++ b/svgio/source/svgreader/svgcharacternode.cxx
@@ -287,6 +287,7 @@ namespace svgio::svgreader
                switch(aDominantBaseline)
                {
                    case DominantBaseline::Middle:
                    case DominantBaseline::Central:
                    {
                        aPosition.setY(aPosition.getY() - aRange.getCenterY());
                        break;
diff --git a/svgio/source/svgreader/svgstyleattributes.cxx b/svgio/source/svgreader/svgstyleattributes.cxx
index 869b071..731df59 100644
--- a/svgio/source/svgreader/svgstyleattributes.cxx
+++ b/svgio/source/svgreader/svgstyleattributes.cxx
@@ -1969,6 +1969,10 @@ namespace svgio::svgreader
                        {
                            setDominantBaseline(DominantBaseline::Hanging);
                        }
                        else if(o3tl::equalsIgnoreAsciiCase(o3tl::trim(aContent), u"central"))
                        {
                            setDominantBaseline(DominantBaseline::Central);
                        }
                        else
                        {
                            // no DominantBaseline