SVGIO: tdf#45771: Fix issue when text size is twice its size...

... when using relative units (em, ex)

This is because for nodes of type textnode, getFontSizeNumber
is called from SvgCharacterNode::createSimpleTextPrimitive
and from SvgNode::getCurrentFontSize(), so avoid the second call.

Change-Id: Ibd418708a572e3c1643164a900fac7e7481afe81
Reviewed-on: https://gerrit.libreoffice.org/21801Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

svgio/inc/svgio/svgreader/svgnode.hxx

@@ -160,7 +160,7 @@ namespace svgio
             virtual double getCurrentFontSizeInherited() const override;
             virtual double getCurrentXHeightInherited() const override;
 
-            double getCurrentFontSize() const;
+            virtual double getCurrentFontSize() const;
             double getCurrentXHeight() const;
 
             /// Id access

svgio/inc/svgio/svgreader/svgtextnode.hxx

@@ -58,6 +58,8 @@ namespace svgio
             virtual void parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent) override;
             virtual void decomposeSvgNode(drawinglayer::primitive2d::Primitive2DContainer& rTarget, bool bReferenced) const override;
 
+            virtual double getCurrentFontSize() const override;
+
             /// transform content, set if found in current context
             const basegfx::B2DHomMatrix* getTransform() const { return mpaTransform; }
             void setTransform(const basegfx::B2DHomMatrix* pMatrix = nullptr) { if(mpaTransform) delete mpaTransform; mpaTransform = nullptr; if(pMatrix) mpaTransform = new basegfx::B2DHomMatrix(*pMatrix); }

svgio/source/svgreader/svgtextnode.cxx

@@ -260,6 +260,11 @@ namespace svgio
                 }
             }
         }
+
+        double SvgTextNode::getCurrentFontSize() const
+        {
+            return getCurrentFontSizeInherited();
+        }
     } // end of namespace svgreader
 } // end of namespace svgio