1 files changed, 77 insertions, 0 deletions
diff --git a/vcl/source/outdev/background.cxx b/vcl/source/outdev/background.cxx
new file mode 100644
index 0000000000..7c07367a82
--- /dev/null
+++ b/vcl/source/outdev/background.cxx
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <vcl/virdev.hxx>
+
+Color OutputDevice::GetBackgroundColor() const
+{
+    return GetBackground().GetColor();
+}
+
+void OutputDevice::SetBackground()
+{
+
+    maBackground = Wallpaper();
+    mbBackground = false;
+
+    if( mpAlphaVDev )
+        mpAlphaVDev->SetBackground();
+}
+
+void OutputDevice::SetBackground( const Wallpaper& rBackground )
+{
+
+    maBackground = rBackground;
+
+    if( rBackground.GetStyle() == WallpaperStyle::NONE )
+        mbBackground = false;
+    else
+        mbBackground = true;
+
+    if( !mpAlphaVDev )
+        return;
+
+    // Some of these are probably wrong (e.g. if the gradient has transparency),
+    // but hopefully nobody uses that. If you do, feel free to implement it properly.
+    if( rBackground.GetStyle() == WallpaperStyle::NONE )
+    {
+        mpAlphaVDev->SetBackground( rBackground );
+    }
+    else if( rBackground.IsBitmap())
+    {
+        BitmapEx bitmap = rBackground.GetBitmap();
+        if( bitmap.IsAlpha())
+            mpAlphaVDev->SetBackground( Wallpaper( BitmapEx( bitmap.GetAlphaMask().GetBitmap() ) ) );
+        else
+            mpAlphaVDev->SetBackground( Wallpaper( COL_ALPHA_OPAQUE ));
+    }
+    else if( rBackground.IsGradient())
+    {
+        mpAlphaVDev->SetBackground( Wallpaper( COL_ALPHA_OPAQUE ));
+    }
+    else
+    {
+        // Color background.
+        int alpha = rBackground.GetColor().GetAlpha();
+        mpAlphaVDev->SetBackground( Wallpaper( Color( alpha, alpha, alpha )));
+    }
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */