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/* -*- 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 .
*/
#pragma once
#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/color/bcolor.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
// HelplinePrimitive2D class
namespace drawinglayer::primitive2d
{
/** HelplineStyle2D definition
The available styles of Helplines
*/
enum class HelplineStyle2D
{
Point,
Line
};
/** HelplinePrimitive2D class
This primitive provides a view-dependent helpline definition. The Helpline
is defined by a line equation (Point and vector) and a style. When the style
is a line, dependent from Viewport the visible part of that Helpline is
constructed. For Point, a cross is constructed. This primitive is highly
view-dependent.
The visualisation uses the two given colors to create a dashed line with
the given dash length.
*/
class DRAWINGLAYER_DLLPUBLIC HelplinePrimitive2D final : public BufferedDecompositionPrimitive2D
{
private:
/// Helpline geometry definition
basegfx::B2DPoint maPosition;
basegfx::B2DVector maDirection;
HelplineStyle2D meStyle;
/// Helpline style definition
basegfx::BColor maRGBColA;
basegfx::BColor maRGBColB;
double mfDiscreteDashLength;
/** 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 void create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const override;
public:
/// constructor
HelplinePrimitive2D(
const basegfx::B2DPoint& rPosition,
const basegfx::B2DVector& rDirection,
HelplineStyle2D eStyle,
const basegfx::BColor& rRGBColA,
const basegfx::BColor& aRGBColB,
double fDiscreteDashLength);
/// data read access
const basegfx::B2DPoint& getPosition() const { return maPosition; }
const basegfx::B2DVector& getDirection() const { return maDirection; }
HelplineStyle2D getStyle() const { return meStyle; }
const basegfx::BColor& getRGBColA() const { return maRGBColA; }
const basegfx::BColor& getRGBColB() const { return maRGBColB; }
double getDiscreteDashLength() const { return mfDiscreteDashLength; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) 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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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