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// Copyright (C) 2002 Dominique Devriese <devriese@kde.org>
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// This program 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301, USA.
#ifndef KIG_OBJECTS_LINE_IMP_H
#define KIG_OBJECTS_LINE_IMP_H
#include "curve_imp.h"
#include "../misc/common.h"
class LineData;
/**
* An ObjectImp class that is the base of the line-like ObjectImp's:
* SegmentImp, LineImp and RayImp..
*/
class AbstractLineImp
: public CurveImp
{
protected:
LineData mdata;
AbstractLineImp( const LineData& d );
AbstractLineImp( const Coordinate& a, const Coordinate& b );
public:
typedef CurveImp Parent;
/**
* Returns the ObjectImpType representing the AbstractLineImp
* type..
*/
static const ObjectImpType* stype();
~AbstractLineImp();
bool inRect( const Rect& r, int width, const KigWidget& ) const;
const uint numberOfProperties() const;
const QCStringList properties() const;
const QCStringList propertiesInternalNames() const;
ObjectImp* property( uint which, const KigDocument& d ) const;
const char* iconForProperty( uint which ) const;
const ObjectImpType* impRequirementForProperty( uint which ) const;
bool isPropertyDefinedOnOrThroughThisImp( uint which ) const;
/**
* Get the slope of this AbstractLineImp.. For a line through
* points a( xa, ya ) and b ( xb, yb ), this means the value ( yb -
* ya ) / ( xb - xa ).
*/
double slope() const;
/**
* Get a string containing the equation of this line in the form "y
* = a * x + b ".
*/
const QString equationString() const;
/**
* Get the LineData for this AbstractLineImp.
*/
LineData data() const;
bool equals( const ObjectImp& rhs ) const;
};
/**
* An ObjectImp representing a segment
*/
class SegmentImp
: public AbstractLineImp
{
public:
typedef AbstractLineImp Parent;
/**
* Returns the ObjectImpType representing the SegmentImp
* type..
*/
static const ObjectImpType* stype();
/**
* Construct a new segment from point a to point b.
*/
SegmentImp( const Coordinate& a, const Coordinate& b );
/**
* Construct a new segment from a LineData.
*/
SegmentImp( const LineData& d );
void draw( KigPainter& p ) const;
bool contains( const Coordinate& p, int width, const KigWidget& si ) const;
Rect surroundingRect() const;
ObjectImp* transform( const Transformation& ) const;
const Coordinate getPoint( double param, const KigDocument& ) const;
double getParam( const Coordinate&, const KigDocument& ) const;
const uint numberOfProperties() const;
const QCStringList properties() const;
const QCStringList propertiesInternalNames() const;
ObjectImp* property( uint which, const KigDocument& d ) const;
const char* iconForProperty( uint which ) const;
const ObjectImpType* impRequirementForProperty( uint which ) const;
SegmentImp* copy() const;
/**
* Get the length of this segment.
*/
double length() const;
const ObjectImpType* type() const;
void visit( ObjectImpVisitor* vtor ) const;
bool containsPoint( const Coordinate& p, const KigDocument& doc ) const;
bool internalContainsPoint( const Coordinate& p, double threshold ) const;
};
/**
* An ObjectImp representing a ray. This means half of a line, it is
* infinite in one direction, but ends at a certain point in the other
* direction..
*/
class RayImp
: public AbstractLineImp
{
public:
typedef AbstractLineImp Parent;
/**
* Returns the ObjectImpType representing the RayImp
* type..
*/
static const ObjectImpType* stype();
/**
* Construct a ray, starting at a, and going through b.
*/
RayImp( const Coordinate& a, const Coordinate& b );
/**
* Construct a ray from a LineData.
*/
RayImp( const LineData& d );
void draw( KigPainter& p ) const;
bool contains( const Coordinate& p, int width, const KigWidget& si ) const;
Rect surroundingRect() const;
ObjectImp* transform( const Transformation& ) const;
const Coordinate getPoint( double param, const KigDocument& ) const;
double getParam( const Coordinate&, const KigDocument& ) const;
RayImp* copy() const;
const ObjectImpType* type() const;
void visit( ObjectImpVisitor* vtor ) const;
bool containsPoint( const Coordinate& p, const KigDocument& doc ) const;
bool internalContainsPoint( const Coordinate& p, double threshold ) const;
};
/**
* An ObjectImp representing a line.
*/
class LineImp
: public AbstractLineImp
{
public:
typedef AbstractLineImp Parent;
/**
* Returns the ObjectImpType representing the LineImp
* type..
*/
static const ObjectImpType* stype();
/**
* Construct a LineImp going through points a and b.
*/
LineImp( const Coordinate& a, const Coordinate& b );
/**
* Construct a LineImp from a LineData.
*/
LineImp( const LineData& d );
void draw( KigPainter& p ) const;
bool contains( const Coordinate& p, int width, const KigWidget& si ) const;
Rect surroundingRect() const;
ObjectImp* transform( const Transformation& ) const;
const Coordinate getPoint( double param, const KigDocument& ) const;
double getParam( const Coordinate&, const KigDocument& ) const;
LineImp* copy() const;
const ObjectImpType* type() const;
void visit( ObjectImpVisitor* vtor ) const;
bool containsPoint( const Coordinate& p, const KigDocument& doc ) const;
bool internalContainsPoint( const Coordinate& p, double threshold ) const;
};
#endif
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