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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_HELPLINEPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_HELPLINEPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/color/bcolor.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
//////////////////////////////////////////////////////////////////////////////
// HelplinePrimitive2D class
namespace drawinglayer
{
namespace primitive2d
{
/** HelplineStyle2D definition
The available styles of Helplines
*/
enum HelplineStyle2D
{
HELPLINESTYLE2D_POINT,
HELPLINESTYLE2D_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 HelplinePrimitive2D : 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;
protected:
/// create local decomposition
virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
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;
/// provide unique ID
DeclPrimitrive2DIDBlock()
/// Overload standard getDecomposition call to be view-dependent here
virtual Primitive2DSequence get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
};
} // end of namespace primitive2d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_HELPLINEPRIMITIVE2D_HXX
//////////////////////////////////////////////////////////////////////////////
// eof
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