87 lines
3.3 KiB
C++
87 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <drawinglayer/drawinglayerdllapi.h>
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#include <drawinglayer/primitive2d/BufferedDecompositionPrimitive2D.hxx>
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#include <basegfx/polygon/b2dpolypolygon.hxx>
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#include <basegfx/color/bcolor.hxx>
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#include <drawinglayer/attribute/fillgradientattribute.hxx>
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// #include <basegfx/numeric/ftools.hxx>
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namespace drawinglayer::primitive2d
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{
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/** PolyPolygonAlphaGradientPrimitive2D class
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This is a simple extension to PolyPolygonColorPrimitive2D
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that allows to directly define an alpha gradient for the PolyPolygon
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to be represented, additionally to the color.
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It will be decomposed simply to PolyPolygonColorPrimitive2D,
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maybe embedded to a FillGradientPrimitive2D if
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needed, so no changes have to be done to any primitive processor.
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OTOH e.g. SDPR implementations *may* use this directly if they
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are capable to draw a filled PolyPolygon with transparency gradient
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directly (e.g. CairoPixelProcessor2D)
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*/
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class DRAWINGLAYER_DLLPUBLIC PolyPolygonAlphaGradientPrimitive2D final
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: public BufferedDecompositionPrimitive2D
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{
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private:
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/// the tools::PolyPolygon geometry
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basegfx::B2DPolyPolygon maPolyPolygon;
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/// the polygon fill color
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basegfx::BColor maBColor;
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/// alphaGradient definition
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attribute::FillGradientAttribute maAlphaGradient;
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/// create local decomposition
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virtual Primitive2DReference
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create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;
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public:
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/// constructor
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PolyPolygonAlphaGradientPrimitive2D(const basegfx::B2DPolyPolygon& rPolyPolygon,
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const basegfx::BColor& rBColor,
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const attribute::FillGradientAttribute& rAlphaGradient);
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/// data read access
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const basegfx::B2DPolyPolygon& getB2DPolyPolygon() const { return maPolyPolygon; }
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const basegfx::BColor& getBColor() const { return maBColor; }
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const attribute::FillGradientAttribute& getAlphaGradient() const { return maAlphaGradient; }
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/// compare operator
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virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
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/// get B2Drange
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virtual basegfx::B2DRange
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getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
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/// provide unique ID
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virtual sal_uInt32 getPrimitive2DID() const override;
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};
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} // end of namespace drawinglayer::primitive2d
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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