Better quality previews in print dialog.

Make a fixed size bitmap of the current document for preview in
print dialog. The bitmap is scaled when the dialog is resized, which
is faster and better quality as it uses "BEST" scaling method for
resizing the bitmap.

Change-Id: I3be0bec30a7f2cd594c56d23fe2b39221aff807c

1 files changed, 5 insertions, 0 deletions

diff --git a/vcl/inc/printdlg.hxx b/vcl/inc/printdlg.hxx
index d57218ebd2bb..296d5b89edea 100644
--- a/vcl/inc/printdlg.hxx
+++ b/vcl/inc/printdlg.hxx
@@ -45,16 +45,21 @@ namespace vcl
     public:
         class PrintPreviewWindow : public Window
         {
+            static const sal_Int32 PREVIEW_BITMAP_WIDTH;
+
             GDIMetaFile         maMtf;
             Size                maOrigSize;
             Size                maPreviewSize;
             VirtualDevice       maPageVDev;
+            Bitmap              maPreviewBitmap;
             rtl::OUString       maReplacementString;
             rtl::OUString       maToolTipString;
             bool                mbGreyscale;
             FixedLine           maHorzDim;
             FixedLine           maVertDim;
 
+            void preparePreviewBitmap();
+
         public:
             PrintPreviewWindow( Window* pParent );
             virtual ~PrintPreviewWindow();