svtools: expose document position in DocumentToGraphicRenderer

Writer pages always have an offset inside the root frame, and this is
visible in the generated metafile as well. The offset is minimal for a
small window and a single page, but the vertical offset increases with
every page. Make this information visible, so sfx2 can compensate this.

This is somewhat similar to what SfxObjectShell::DoDraw_Impl() does, but
that works for the first page only (use case is thumbnail generation),
while this is 0 offset for Calc/Impress and a proper offset for all
Writer pages.

Change-Id: I1075c98faf74f9e77c916572b4d63d40fbd80ab1
Reviewed-on: https://gerrit.libreoffice.org/65850
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
Reviewed-on: https://gerrit.libreoffice.org/69758
Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/svtools/source/filter/DocumentToGraphicRenderer.cxx b/svtools/source/filter/DocumentToGraphicRenderer.cxx
index 812fea51d701..00c27c7c0fd8 100644
--- a/svtools/source/filter/DocumentToGraphicRenderer.cxx
+++ b/svtools/source/filter/DocumentToGraphicRenderer.cxx
@@ -114,7 +114,8 @@ uno::Any DocumentToGraphicRenderer::getSelection() const
     return aSelection;
 }
 
-Size DocumentToGraphicRenderer::getDocumentSizeIn100mm(sal_Int32 nCurrentPage)
+Size DocumentToGraphicRenderer::getDocumentSizeIn100mm(sal_Int32 nCurrentPage,
+                                                       Point* pDocumentPosition)
 {
     Reference< awt::XDevice > xDevice(mxToolkit->createScreenCompatibleDevice( 32, 32 ) );
 
@@ -133,6 +134,7 @@ Size DocumentToGraphicRenderer::getDocumentSizeIn100mm(sal_Int32 nCurrentPage)
     renderProperties[3].Value <<= true;
 
     awt::Size aSize;
+    awt::Point aPos;
 
     sal_Int32 nPages = mxRenderable->getRendererCount( selection, renderProperties );
     if (nPages >= nCurrentPage)
@@ -144,9 +146,18 @@ Size DocumentToGraphicRenderer::getDocumentSizeIn100mm(sal_Int32 nCurrentPage)
             {
                 aResult[ nProperty ].Value >>= aSize;
             }
+            else if (aResult[nProperty].Name == "PagePos")
+            {
+                aResult[nProperty].Value >>= aPos;
+            }
         }
     }
 
+    if (pDocumentPosition)
+    {
+        *pDocumentPosition = Point(aPos.X, aPos.Y);
+    }
+
     return Size( aSize.Width, aSize.Height );
 }