Writer image export: cmd. line, default to white background

This commit fixes the writer image export (jpeg, png) that didn't
work because the export pixel size was set to 0 by default. Now
the default is set to document size (which depends on system DPI).

When exporting to a PNG the background was transparent, which may
not  be desired. The background color is now by default white and
can be changed for DocumentToGraphicRenderer, but the dialog or
command line don't support such an option - for now.

Change-Id: I16ffd3cd60c47b52768f43ae4c4c170fc821033b

1 files changed, 8 insertions, 1 deletions

diff --git a/svtools/source/filter/DocumentToGraphicRenderer.cxx b/svtools/source/filter/DocumentToGraphicRenderer.cxx
index d410f4c7db34..e33a94ec416e 100644
--- a/svtools/source/filter/DocumentToGraphicRenderer.cxx
+++ b/svtools/source/filter/DocumentToGraphicRenderer.cxx
@@ -94,7 +94,8 @@ Size DocumentToGraphicRenderer::getDocumentSizeIn100mm(sal_Int32 aCurrentPage)
 Graphic DocumentToGraphicRenderer::renderToGraphic(
     sal_Int32 aCurrentPage,
     Size aDocumentSizePixel,
-    Size aTargetSizePixel)
+    Size aTargetSizePixel,
+    Color aPageColor)
 
 {
     if (!mxModel.is() || !mxController.is() || !mxRenderable.is())
@@ -127,6 +128,12 @@ Graphic DocumentToGraphicRenderer::renderToGraphic(
 
     aMtf.Record( pOutputDev );
 
+    if (aPageColor != Color(COL_TRANSPARENT))
+    {
+        pOutputDev->SetBackground(Wallpaper(aPageColor));
+        pOutputDev->Erase();
+    }
+
     uno::Any aSelection;
     aSelection <<= mxDocument;
     mxRenderable->render(aCurrentPage - 1, aSelection, renderProps );