tdf#109340 Improve performance by reducing matrix multiplication

Multiplication of two B2DHomMatrix with operator* is very CPU expensive,
because 24 of double-precision floating point multiplication
needs to be performed.

With this patch I have reduced Multiplication of matrix,
by creating combined Scale and Transform matrix at once.
It allows to reduce matrix multiplication by one,
and improve import time.

Change-Id: I85fde6354e458659a0214514c6e05b8e2ee04185
Reviewed-on: https://gerrit.libreoffice.org/45704Reviewed-by: Patrick Jaap <patrick.jaap@tu-dresden.de>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

drawinglayer/source/tools/emfphelperdata.cxx

@@ -283,8 +283,8 @@ namespace emfplushelper
         // To evtl. correct and see where this came from, please compare with the implementations
         // of EmfPlusHelperData::MapToDevice and EmfPlusHelperData::Map* in prev versions
         maMapTransform = maWorldTransform;
-        maMapTransform *= basegfx::utils::createScaleB2DHomMatrix(100.0 * mnMmX / mnPixX, 100.0 * mnMmY / mnPixY);
-        maMapTransform *= basegfx::utils::createTranslateB2DHomMatrix(double(-mnFrameLeft), double(-mnFrameTop));
+        maMapTransform *= basegfx::utils::createScaleTranslateB2DHomMatrix(100.0 * mnMmX / mnPixX, 100.0 * mnMmY / mnPixY,
+                                                                           double(-mnFrameLeft), double(-mnFrameTop));
         maMapTransform *= maBaseTransform;
     }
 
@@ -812,7 +812,7 @@ namespace emfplushelper
                     {
                         sal_uInt32 header, version;
 
-                        rMS.ReadUInt32(header).ReadUInt32(version).ReadInt32(mnHDPI).ReadInt32(mnVDPI);
+                        rMS.ReadUInt32(header).ReadUInt32(version).ReadUInt32(mnHDPI).ReadUInt32(mnVDPI);
                         SAL_INFO("drawinglayer", "EMF+ Header");
                         SAL_INFO("drawinglayer", "EMF+\theader: 0x" << std::hex << header << " version: " << std::dec << version << " horizontal DPI: " << mnHDPI << " vertical DPI: " << mnVDPI << " dual: " << (flags & 1));
                         break;

drawinglayer/source/tools/emfphelperdata.hxx

@@ -198,8 +198,8 @@ namespace emfplushelper
         float                       mfPageScale;
         sal_Int32                   mnOriginX;
         sal_Int32                   mnOriginY;
-        sal_Int32                   mnHDPI;
-        sal_Int32                   mnVDPI;
+        sal_uInt32                  mnHDPI;
+        sal_uInt32                  mnVDPI;
 
         /* EMF+ emf header info */
         sal_Int32                   mnFrameLeft;