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

#pragma once

#include <drawinglayer/drawinglayerdllapi.h>

#include <drawinglayer/primitive2d/BufferedDecompositionPrimitive2D.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/color/bcolor.hxx>
#include <vcl/bitmap.hxx>


// GridPrimitive2D class

namespace drawinglayer::primitive2d
{
        /** GridPrimitive2D class

            This primitive is specialized to Grid visualisation. The graphic definition
            (Transform) contains the whole grid area, but will of course be combined
            with the visible area (Viewport) when decomposed. Also a resolution-dependent
            point reduction is used to not create too much grid visualisation data. This
            makes this primitive highly view-dependent and it dynamically buffers
            the last decomposition dependent from the Viewport used.
         */
        class DRAWINGLAYER_DLLPUBLIC GridPrimitive2D final : public BufferedDecompositionPrimitive2D
        {
        private:
            /// The geometry definition for the grid area
            basegfx::B2DHomMatrix                           maTransform;

            /// grid layout definitions
            double                                          mfWidth;
            double                                          mfHeight;
            double                                          mfSmallestViewDistance;
            double                                          mfSmallestSubdivisionViewDistance;
            sal_uInt32                                      mnSubdivisionsX;
            sal_uInt32                                      mnSubdivisionsY;

            /// Grid color for single-pixel grid points
            basegfx::BColor                                 maBColor;

            /// The Bitmap (with transparence) for grid cross points
            Bitmap                                          maCrossMarker;

            /** the last used object to view transformtion and the last Viewport,
                used from getDecomposition for decide buffering
             */
            basegfx::B2DHomMatrix                           maLastObjectToViewTransformation;
            basegfx::B2DRange                               maLastViewport;

            /// create local decomposition
            virtual Primitive2DReference create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;

        public:
            /// constructor
            GridPrimitive2D(
                basegfx::B2DHomMatrix aTransform,
                double fWidth,
                double fHeight,
                double fSmallestViewDistance,
                double fSmallestSubdivisionViewDistance,
                sal_uInt32 nSubdivisionsX,
                sal_uInt32 nSubdivisionsY,
                const basegfx::BColor& rBColor,
                const Bitmap& rCrossMarker);

            /// data read access
            const basegfx::B2DHomMatrix& getTransform() const { return maTransform; }
            double getWidth() const { return mfWidth; }
            double getHeight() const { return mfHeight; }
            double getSmallestViewDistance() const { return mfSmallestViewDistance; }
            double getSmallestSubdivisionViewDistance() const { return mfSmallestSubdivisionViewDistance; }
            sal_uInt32 getSubdivisionsX() const { return mnSubdivisionsX; }
            sal_uInt32 getSubdivisionsY() const { return mnSubdivisionsY; }
            const basegfx::BColor& getBColor() const { return maBColor; }
            const Bitmap& getCrossMarker() const { return maCrossMarker; }

            /// compare operator
            virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;

            /// get 2d range
            virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;

            /// provide unique ID
            virtual sal_uInt32 getPrimitive2DID() const override;

            /// Override standard getDecomposition to be view-dependent here
            virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
        };
} // end of namespace drawinglayer::primitive2d


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