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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_SHADOWPRIMITIVE2D_HXX
      21             : #define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_SHADOWPRIMITIVE2D_HXX
      22             : 
      23             : #include <drawinglayer/drawinglayerdllapi.h>
      24             : 
      25             : #include <drawinglayer/primitive2d/groupprimitive2d.hxx>
      26             : #include <basegfx/matrix/b2dhommatrix.hxx>
      27             : #include <basegfx/color/bcolor.hxx>
      28             : 
      29             : 
      30             : 
      31             : namespace drawinglayer
      32             : {
      33             :     namespace primitive2d
      34             :     {
      35             :         /** ShadowPrimitive2D class
      36             : 
      37             :             This primitive defines a generic shadow geometry construction
      38             :             for 2D objects. It decomposes to a TransformPrimitive2D embedded
      39             :             into a ModifiedColorPrimitive2D.
      40             : 
      41             :             It's for primtive usage convenience, so that not everyone has
      42             :             to implement the generic shadow construction by himself.
      43             : 
      44             :             The same geometry as sequence of primitives is used as geometry and
      45             :             as shadow. Since these are RefCounted Uno-Api objects, no extra objects
      46             :             are needed for the shadow itself; all the local decompositions of the
      47             :             original geometry can be reused from the renderer for shadow visualisation.
      48             :         */
      49           0 :         class DRAWINGLAYER_DLLPUBLIC ShadowPrimitive2D : public GroupPrimitive2D
      50             :         {
      51             :         private:
      52             :             /// the shadow transformation, normally just an offset
      53             :             basegfx::B2DHomMatrix                   maShadowTransform;
      54             : 
      55             :             /// the shadow color to which all geometry is to be forced
      56             :             basegfx::BColor                         maShadowColor;
      57             : 
      58             :         public:
      59             :             /// constructor
      60             :             ShadowPrimitive2D(
      61             :                 const basegfx::B2DHomMatrix& rShadowTransform,
      62             :                 const basegfx::BColor& rShadowColor,
      63             :                 const Primitive2DSequence& rChildren);
      64             : 
      65             :             /// data read access
      66           0 :             const basegfx::B2DHomMatrix& getShadowTransform() const { return maShadowTransform; }
      67           0 :             const basegfx::BColor& getShadowColor() const { return maShadowColor; }
      68             : 
      69             :             /// compare operator
      70             :             virtual bool operator==(const BasePrimitive2D& rPrimitive) const SAL_OVERRIDE;
      71             : 
      72             :             /// get range
      73             :             virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const SAL_OVERRIDE;
      74             : 
      75             :             ///  create decomposition
      76             :             virtual Primitive2DSequence get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const SAL_OVERRIDE;
      77             : 
      78             :             /// provide unique ID
      79             :             DeclPrimitive2DIDBlock()
      80             :         };
      81             :     } // end of namespace primitive2d
      82             : } // end of namespace drawinglayer
      83             : 
      84             : 
      85             : 
      86             : #endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_SHADOWPRIMITIVE2D_HXX
      87             : 
      88             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */