106 lines
4.4 KiB
C++
106 lines
4.4 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/color/bcolor.hxx>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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// HelplinePrimitive2D class
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namespace drawinglayer::primitive2d
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{
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/** HelplineStyle2D definition
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The available styles of Helplines
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*/
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enum class HelplineStyle2D
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{
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Point,
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Line
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};
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/** HelplinePrimitive2D class
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This primitive provides a view-dependent helpline definition. The Helpline
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is defined by a line equation (Point and vector) and a style. When the style
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is a line, dependent from Viewport the visible part of that Helpline is
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constructed. For Point, a cross is constructed. This primitive is highly
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view-dependent.
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The visualisation uses the two given colors to create a dashed line with
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the given dash length.
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*/
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class DRAWINGLAYER_DLLPUBLIC HelplinePrimitive2D final : public BufferedDecompositionPrimitive2D
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{
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private:
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/// Helpline geometry definition
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basegfx::B2DPoint maPosition;
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basegfx::B2DVector maDirection;
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HelplineStyle2D meStyle;
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/// Helpline style definition
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basegfx::BColor maRGBColA;
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basegfx::BColor maRGBColB;
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double mfDiscreteDashLength;
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/** the last used object to view transformtion and the last Viewport,
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used from getDecomposition for decide buffering
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*/
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basegfx::B2DHomMatrix maLastObjectToViewTransformation;
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basegfx::B2DRange maLastViewport;
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/// create local decomposition
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virtual Primitive2DReference create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;
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public:
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/// constructor
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HelplinePrimitive2D(
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const basegfx::B2DPoint& rPosition,
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const basegfx::B2DVector& rDirection,
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HelplineStyle2D eStyle,
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const basegfx::BColor& rRGBColA,
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const basegfx::BColor& aRGBColB,
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double fDiscreteDashLength);
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/// data read access
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const basegfx::B2DPoint& getPosition() const { return maPosition; }
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const basegfx::B2DVector& getDirection() const { return maDirection; }
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HelplineStyle2D getStyle() const { return meStyle; }
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const basegfx::BColor& getRGBColA() const { return maRGBColA; }
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const basegfx::BColor& getRGBColB() const { return maRGBColB; }
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double getDiscreteDashLength() const { return mfDiscreteDashLength; }
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/// compare operator
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virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
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/// provide unique ID
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virtual sal_uInt32 getPrimitive2DID() const override;
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/// Override standard getDecomposition to be view-dependent here
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virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) 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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