/* -*- 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 )));
    }
}


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