/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * 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 <drawinglayer/primitive2d/discretebitmapprimitive2d.hxx>

#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>

#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

namespace drawinglayer::primitive2d

{

        Primitive2DReference DiscreteBitmapPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const

        {

            // use getViewTransformation() and getObjectTransformation() from

            // ObjectAndViewTransformationDependentPrimitive2D to create a BitmapPrimitive2D

            // with the correct mapping

            if(getBitmap().IsEmpty())

                return nullptr;

            // get discrete size

            const Size aSizePixel = getBitmap().GetSizePixel();

            const basegfx::B2DVector aDiscreteSize(aSizePixel.Width(), aSizePixel.Height());

            // get inverse ViewTransformation

            basegfx::B2DHomMatrix aInverseViewTransformation(getViewTransformation());

            aInverseViewTransformation.invert();

            // get size and position in world coordinates

            const basegfx::B2DVector aWorldSize(aInverseViewTransformation * aDiscreteSize);

            const basegfx::B2DPoint  aWorldTopLeft(getObjectTransformation() * getTopLeft());

            // build object matrix in world coordinates so that the top-left

            // position remains, but possible transformations (e.g. rotations)

            // in the ObjectToView stack remain and get correctly applied

            basegfx::B2DHomMatrix aObjectTransform;

            aObjectTransform.set(0, 0, aWorldSize.getX());

            aObjectTransform.set(1, 1, aWorldSize.getY());

            aObjectTransform.set(0, 2, aWorldTopLeft.getX());

            aObjectTransform.set(1, 2, aWorldTopLeft.getY());

            // get inverse ObjectTransformation

            basegfx::B2DHomMatrix aInverseObjectTransformation(getObjectTransformation());

            aInverseObjectTransformation.invert();

            // transform to object coordinate system

            aObjectTransform = aInverseObjectTransformation * aObjectTransform;

            // create BitmapPrimitive2D with now object-local coordinate data

            return

                new BitmapPrimitive2D(

                    getBitmap(),

                    aObjectTransform);

        }

        DiscreteBitmapPrimitive2D::DiscreteBitmapPrimitive2D(

            const Bitmap& rBitmap,

            const basegfx::B2DPoint& rTopLeft)

        :   maBitmap(rBitmap),

            maTopLeft(rTopLeft)

        {

        }

        bool DiscreteBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const

        {

            if(ObjectAndViewTransformationDependentPrimitive2D::operator==(rPrimitive))

            {

                const DiscreteBitmapPrimitive2D& rCompare = static_cast<const DiscreteBitmapPrimitive2D&>(rPrimitive);

                return (getBitmap() == rCompare.getBitmap()

                    && getTopLeft() == rCompare.getTopLeft());

            }

            return false;

        }

        // provide unique ID

        sal_uInt32 DiscreteBitmapPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_DISCRETEBITMAPPRIMITIVE2D;

        }

} // end of namespace

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */