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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: helplineprimitive2d.hxx,v $
*
* $Revision: 1.4 $
*
* last change: $Author: aw $ $Date: 2008-06-24 15:30:17 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#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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