tdf#53004 tdf#142495 WMF EMF Always display Text rectangle

In previous implementation if BKMode was set to Transparent,
then both Background of Text and Rectangle was not drawn.

It was wrong, and Rectangle should be always drawn.

This commit fix that issue and allows EMF images
exported by LTspice to be rendered correctly under LibreOffice.

Change-Id: I03801d35d92eb2a3fdc175ca1d5b348a2aa30842
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/116394
Tested-by: Jenkins
Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>

1 files changed, 3 insertions, 0 deletions

diff --git a/emfio/source/reader/mtftools.cxx b/emfio/source/reader/mtftools.cxx
index 6bf0d98a3e76..866f6996d9e3 100644
--- a/emfio/source/reader/mtftools.cxx
+++ b/emfio/source/reader/mtftools.cxx
@@ -1381,12 +1381,15 @@ namespace emfio
     {
         WinMtfFillStyle aFillStyleBackup = maFillStyle;
         bool            aTransparentBackup = maLineStyle.bTransparent;
+        BkMode          mnBkModeBackup = mnBkMode;
 
         const tools::Polygon aPoly( rRect );
         maLineStyle.bTransparent = true;
         maFillStyle = maBkColor;
+        mnBkMode = BkMode::OPAQUE;
         ImplSetNonPersistentLineColorTransparenz();
         DrawPolygon(aPoly, false);
+        mnBkMode = mnBkModeBackup; // The rectangle needs to be always drawned even if mode is transparent
         maFillStyle = aFillStyleBackup;
         maLineStyle.bTransparent = aTransparentBackup;
     }