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-/***************************************************************************
- kplotwidget.h - A generic data-plotting widget
- -------------------
- 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 _KPLOTWIDGET_H_
-#define _KPLOTWIDGET_H_
-
-#include <tqwidget.h>
-#include "kplotobject.h"
-#include "kplotaxis.h"
-
-#define BIGTICKSIZE 10
-#define SMALLTICKSIZE 4
-#define XPADDING 20
-#define YPADDING 20
-
-class TQColor;
-class TQPixmap;
-
-/**@class KPlotWidget
- *@short Genric data plotting widget.
- *@author Jason Harris
- *@version 1.1
- *Widget for drawing plots. Includes adjustable axes (KPlotAxis) with
- *tickmarks and labels and a list of KPlotObjects to be drawn.
- */
-
-class KDE_EXPORT KPlotWidget : public TQWidget {
- Q_OBJECT
- TQ_OBJECT
-public:
- /**@short Constructor. Sets the primary x and y limits in data units.
- *@param x1 the minimum X value in data units
- *@param x2 the maximum X value in data units
- *@param y1 the minimum Y value in data units
- *@param y2 the maximum Y value in data units
- *@param parent the parent widget
- *@param name name label for the KPlotWidget
- */
- KPlotWidget( double x1=0.0, double x2=1.0, double y1=0.0, double y2=1.0, TQWidget *parent=0, const char* name=0 );
-
- /**Destructor (empty)
- */
- virtual ~KPlotWidget();
-
- /**@short Determine the placement of major and minor tickmarks,
- *based on the current Limit settings
- */
- virtual void updateTickmarks();
-
- /**@short Reset the data limits.
- *@param x1 the minimum X value in data units
- *@param x2 the maximum X value in data units
- *@param y1 the minimum Y value in data units
- *@param y2 the maximum Y value in data units
- */
- virtual void setLimits( double x1, double x2, double y1, double y2 );
-
- /**@return the minimum X value in data units*/
- virtual double x() const { return DataRect.x(); }
-
- /**@return the maximum X value in data units*/
- virtual double x2() const { return DataRect.x2(); }
-
- /**@return the minimum Y value in data units*/
- virtual double y() const { return DataRect.y(); }
-
- /**@return the maximum Y value in data units*/
- virtual double y2() const { return DataRect.y2(); }
-
- /**@return the width in data units*/
- virtual double dataWidth() const { return DataRect.width(); }
-
- /**@return the height in data units*/
- virtual double dataHeight() const { return DataRect.height(); }
-
- /**@short Add an item to the list of KPlotObjects to be plotted.
- *@param o pointer to the KPlotObject to be added
- */
- virtual void addObject( KPlotObject *o ) { ObjectList.append( o ); }
-
- /**@short Remove all items from the list of KPlotObjects
- */
- virtual void clearObjectList() { ObjectList.clear(); update(); }
-
- /**@short replace an item in the KPlotObject list.
- *@param i the index of th item to be replaced
- *@param o pointer to the replacement KPlotObject
- */
- virtual void replaceObject( int i, KPlotObject *o ) { ObjectList.replace( i, o ); }
-
- /**@return the number of KPlotObjects in the list
- */
- virtual int objectCount() const { return ObjectList.count(); }
-
- /**@return a pointer to a specific KPlotObject in the list
- *@param i the index of the desired KPlotObject
- */
- virtual KPlotObject *object( int i ) { return ObjectList.at(i); }
-
- /**@return the background color */
- virtual TQColor bgColor() const { return cBackground; }
-
- /**@return the foreground color */
- virtual TQColor fgColor() const { return cForeground; }
-
- /**@return the grid color */
- virtual TQColor gridColor() const { return cGrid; }
-
- /**@short set the background color
- *@param bg the new background color
- */
- virtual void setBGColor( const TQColor &bg ) { cBackground = bg; setBackgroundColor( bg ); }
-
- /**@short set the foreground color
- *@param fg the new foreground color
- */
- virtual void setFGColor( const TQColor &fg ) { cForeground = fg; }
-
- /**@short set the grid color
- *@param gc the new grid color
- */
- virtual void setGridColor( const TQColor &gc ) { cGrid = gc; }
-
- /**@short toggle whether plot axes are drawn.
- *@param show if true, axes will be drawn.
- *The axes are just a box outline around the plot.
- */
- virtual void setShowAxes( bool show ) { BottomAxis.setVisible(show); LeftAxis.setVisible(show); }
- /**@short toggle whether tick marks are drawn along the axes.
- *@param show if true, tick marks will be drawn.
- */
- virtual void setShowTickMarks( bool show ) { ShowTickMarks = show; }
- /**@short toggle whether tick labels are drawn at major tickmarks.
- *@param show if true, tick labels will be drawn.
- */
- virtual void setShowTickLabels( bool show ) { ShowTickLabels = show; }
- /**@short toggle whether grid lines are drawn at major tickmarks.
- *@param show if true, grid lines will be drawn.
- */
- virtual void setShowGrid( bool show ) { ShowGrid = show; }
-
- /**@short (Deprecated) Sets the X-axis label
- *@param xlabel a short string describing the data plotted on the x-axis.
- *Set the label to an empty string to omit the axis label.
- *This function is deprecated, set the label property in the BottomAxis directly.
- */
- virtual void setXAxisLabel( TQString xlabel ) { BottomAxis.setLabel(xlabel); }
- /**@short (Deprecated) Sets the Y-axis label
- *@param ylabel a short string describing the data plotted on the y-axis.
- *Set the label to an empty string to omit the axis label.
- *This function is deprecated, set the label property in the LeftAxis directly.
- */
- virtual void setYAxisLabel( TQString ylabel ) { LeftAxis.setLabel(ylabel); }
-
- /**@returns the number of pixels to the left of the plot area. Padding values
- *are set to -1 by default; if unchanged, this function will try to guess
- *a good value, based on whether ticklabels and/or axis labels are to be drawn.
- */
- virtual int leftPadding() const;
- /**@returns the number of pixels to the right of the plot area.
- *Padding values are set to -1 by default; if unchanged, this function will try to guess
- *a good value, based on whether ticklabels and/or axis labels are to be drawn.
- */
- virtual int rightPadding() const;
- /**@returns the number of pixels above the plot area.
- *Padding values are set to -1 by default; if unchanged, this function will try to guess
- *a good value, based on whether ticklabels and/or axis labels are to be drawn.
- */
- virtual int topPadding() const;
- /**@returns the number of pixels below the plot area.
- *Padding values are set to -1 by default; if unchanged, this function will try to guess
- *a good value, based on whether ticklabels and/or axis labels are to be drawn.
- */
- virtual int bottomPadding() const;
-
- /**@short set the number of pixels to the left of the plot area.
- *Set this to -1 to revert to automatic determination of padding values.
- */
- virtual void setLeftPadding( int pad ) { LeftPadding = pad; }
- /**@short set the number of pixels to the right of the plot area.
- *Set this to -1 to revert to automatic determination of padding values.
- */
- virtual void setRightPadding( int pad ) { RightPadding = pad; }
- /**@short set the number of pixels above the plot area.
- *Set this to -1 to revert to automatic determination of padding values.
- */
- virtual void setTopPadding( int pad ) { TopPadding = pad; }
- /**@short set the number of pixels below the plot area.
- *Set this to -1 to revert to automatic determination of padding values.
- */
- virtual void setBottomPadding( int pad ) { BottomPadding = pad; }
-
- /**@short revert all four padding values to be automatically determined. */
- virtual void setDefaultPadding() { LeftPadding = -1; RightPadding = -1; TopPadding = -1; BottomPadding = -1; }
-
- /**@short The bottom X axis. */
- KPlotAxis BottomAxis;
- /**@short The left Y axis. */
- KPlotAxis LeftAxis;
-
-protected:
- /**@short the paint event handler, executed when update() or tqrepaint() is called.
- */
- virtual void paintEvent( TQPaintEvent* /* e */ );
-
- /**@short the resize event handler, called when the widget is resized.
- */
- virtual void resizeEvent( TQResizeEvent* /* e */ );
-
- /**@short draws all of the objects onto the widget. Internal use only; one should simply call update()
- *to draw the widget with axes and all objects.
- *@param p pointer to the painter on which we are drawing
- */
- virtual void drawObjects( TQPainter *p );
-
- /**@short draws the plot axes and axis labels. Internal use only; one should simply call update()
- *to draw the widget with axes and all objects.
- *@param p pointer to the painter on which we are drawing
- */
- virtual void drawBox( TQPainter *p );
-
- /**@short modulus function for double variables.
- *For example, dmod( 17.0, 7.0 ) returns 3.0
- *@return the remainder after dividing b into a.
- */
- double dmod( double a, double b );
-
- //The distance between major tickmarks in data units
- double dXtick, dYtick;
- //The number of major and minor tickmarks to be plotted in X and Y
- int nmajX, nminX, nmajY, nminY;
-
- //Limits of the plot area in pixel units
- TQRect PixRect;
- //Limits of the plot area in data units
- DRect DataRect;
- //List of KPlotObjects
- TQPtrList<KPlotObject> ObjectList;
-
- //Colors
- TQColor cBackground, cForeground, cGrid;
- //draw options
- bool ShowTickMarks, ShowTickLabels, ShowGrid;
- //padding
- int LeftPadding, RightPadding, TopPadding, BottomPadding;
-
- TQPixmap *buffer;
-};
-
-#endif
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