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/***************************************************************************
kplotobject.h - A list of points to be plotted
-------------------
begin : Sun 18 May 2003
copyright : (C) 2003 by Jason Harris
email : kstars@30doradus.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. *
* *
***************************************************************************/
#ifndef KPLOTOBJECT_H
#define KPLOTOBJECT_H
class QString;
class QPainter;
#include <kdemacros.h>
/**class DRect
*@short equivalent of QRect with double x,y coordinates
*@author Jason Harris
*@version 1.0
*/
class KDE_EXPORT DRect {
public:
DRect() { DRect( 0.0, 0.0, 1.0, 1.0 ); }
DRect( double x, double y, double w, double h ) { X = x; Y = y; W = w; H = h; }
~DRect() {}
double x() const { return X; }
double y() const { return Y; }
double x2() const { return X + W; }
double y2() const { return Y + H; }
double width() const { return W; }
double height() const { return H; }
void setX( double x ) { X = x; }
void setY( double y ) { Y = y; }
void setWidth( double w ) { W = w; }
void setHeight( double h ) { H = h; }
private:
double X,Y,W,H;
};
/**class DPoint
*@short equivalent of QPoint with double x,y coordinates
*@author Jason Harris
*@version 1.0
*/
class KDE_EXPORT DPoint {
public:
DPoint() { DPoint( 0.0, 0.0 ); }
DPoint( double x, double y ) { setX( x ); setY( y ); }
~DPoint() {}
double x() const { return X; }
double y() const { return Y; }
QPoint qpoint( QRect pb, DRect db ) {
int px = pb.left() + int( pb.width()*( x() - db.x() )/db.width() );
int py = pb.top() + int( pb.height()*( db.y2() - y() )/db.height() );
return QPoint( px, py );
}
void setX( double x ) { X = x; }
void setY( double y ) { Y = y; }
private:
double X, Y;
};
/**@class KPlotObject
*@short Encapsulates an object to be plotted in a KPlotWidget.
*@author Jason Harris
*@version 1.0
*Each KPlotObject consists of a list of QPoints, an object type, a color, a size,
*and a QString name. An additional integer (param) specifies something further
*about the object's appearance, depending on its type. There is a draw function
*for plotting the object on a KPlotWidget's QPainter.
*/
class KDE_EXPORT KPlotObject{
public:
/**@enum PTYPE
*The Type classification of the KPlotObject
*/
enum PTYPE { POINTS=0, CURVE=1, LABEL=2, POLYGON=3, UNKNOWN_TYPE };
/**@enum PPARAM
*Parameter specifying the kind of points
*/
enum PPARAM { DOT=0, CIRCLE=1, SQUARE=2, LETTER=3, UNKNOWN_POINT };
/**@enum CPARAM
*Parameter specifying the kind of line. These are numerically equal to
*the Qt::PenStyle enum values.
*/
enum CPARAM { NO_LINE=0, SOLID=1, DASHED=2, DOTTED=3, DASHDOTTED=4, DASHDOTDOTTED=5, UNKNOWN_CURVE };
/**Default constructor. Create a POINTS-type object with an empty list of points.
*/
KPlotObject();
/**Constructor. Create a KPlotObject according to the arguments.
*/
KPlotObject( const QString &name, const QString &color, PTYPE otype, unsigned int size=2, unsigned int param=0 );
/**Destructor (empty)
*/
~KPlotObject();
/**@return the KPlotObject's Name
*/
QString name() const { return Name; }
/**@short set the KPlotObject's Name
*@param n the new name
*/
void setName( const QString &n ) { Name = n; }
/**@return the KPlotObject's Color
*/
QString color() const { return Color; }
/**@short set the KPlotObject's Color
*@param c the new color
*/
void setColor( const QString &c ) { Color = c; }
/**@return the KPlotObject's Type
*/
PTYPE type() const { return Type; }
/**@short set the KPlotObject's Type
*@param t the new type
*/
void setType( PTYPE t ) { Type = t; }
/**@return the KPlotObject's Size
*/
unsigned int size() const { return Size; }
/**@short set the KPlotObject's Size
*@param s the new size
*/
void setSize( unsigned int s ) { Size = s; }
/**@return the KPlotObject's type-specific Parameter
*Parameter is an unsigned int because it can either be a PPARAM or a CPARAM enum.
*/
unsigned int param() const { return Parameter; }
/**@short set the KPlotObject's type-specific Parameter
*@param p the new parameter
*Parameter is an unsigned int because it can either be a PPARAM or a CPARAM enum.
*/
void setParam( unsigned int p ) { Parameter = p; }
/**@return a pointer to the DPoint at position i
*@param i the index of the desired point.
*/
DPoint* point( unsigned int i ) { return pList.at(i); }
QPtrList<DPoint>* points() { return &pList; }
/**@short Add a point to the object's list.
*@param p the DPoint to add.
*/
void addPoint( const DPoint &p ) { pList.append( new DPoint( p.x(), p.y() ) ); }
/**@short Add a point to the object's list. This is an overloaded function,
*provided for convenience. It behaves essentially like the above function.
*@param p pointer to the DPoint to add.
*/
void addPoint( DPoint *p ) { pList.append( p ); }
/**@short remove the QPoint at position index from the list of points
*@param index the index of the point to be removed.
*/
void removePoint( unsigned int index );
/**@return the number of QPoints currently in the list
*/
unsigned int count() const { return pList.count(); }
/**@short clear the Object's points list
*/
void clearPoints() { pList.clear(); }
private:
QPtrList<DPoint> pList;
PTYPE Type;
unsigned int Size, Parameter;
QString Color, Name;
};
#endif
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