[API CHANGE] tdf#136836 emfio: set size hint on inner PDF if used as shape fill

The bugdoc has a shape, its bitmap fill is an EMF, which is actually a
PDF. The PDF is has a height of 5cm, but the shape has a height of 14
cm.

Inform vcl::RenderPDFBitmaps() about the size of the shape, so the
result won't be blurry. This approach makes sure that we don't
unconditionally render at higher resolution, i.e. the "load a PDF of 100
pages into Online" use-case won't use more memory than before.

API CHANGE, because the EMF reader is only available via UNO, though
it's likely that no actual external code would ever invoke it directly.

Change-Id: If1d8def0136d408a31a0cc54777a7f26430a0ff3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/102996
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

1 files changed, 16 insertions, 0 deletions

diff --git a/svx/source/sdr/properties/defaultproperties.cxx b/svx/source/sdr/properties/defaultproperties.cxx
index fb0c4c59369f..e9a9934a9973 100644
--- a/svx/source/sdr/properties/defaultproperties.cxx
+++ b/svx/source/sdr/properties/defaultproperties.cxx
@@ -30,6 +30,7 @@
 #include <libxml/xmlwriter.h>
 #include <svx/svdmodel.hxx>
 #include <svx/svdtrans.hxx>
+#include <svx/xbtmpit.hxx>
 
 namespace sdr::properties
 {
@@ -155,6 +156,21 @@ namespace sdr::properties
 
         void DefaultProperties::SetObjectItemSet(const SfxItemSet& rSet)
         {
+            if (rSet.HasItem(XATTR_FILLBITMAP))
+            {
+                const XFillBitmapItem* pItem = rSet.GetItem(XATTR_FILLBITMAP);
+                const std::shared_ptr<VectorGraphicData>& pVectorData
+                    = pItem->GetGraphicObject().GetGraphic().getVectorGraphicData();
+                if (pVectorData)
+                {
+                    // Shape is filled by a vector graphic: tell it our size as a hint.
+                    basegfx::B2DTuple aSizeHint;
+                    aSizeHint.setX(GetSdrObject().GetSnapRect().getWidth());
+                    aSizeHint.setY(GetSdrObject().GetSnapRect().getHeight());
+                    pVectorData->setSizeHint(aSizeHint);
+                }
+            }
+
             SfxWhichIter aWhichIter(rSet);
             sal_uInt16 nWhich(aWhichIter.FirstWhich());
             const SfxPoolItem *pPoolItem;