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-rw-r--r--libtdeedu/tdeeduplot/Makefile.am15
-rw-r--r--libtdeedu/tdeeduplot/README23
-rw-r--r--libtdeedu/tdeeduplot/kplotaxis.cpp32
-rw-r--r--libtdeedu/tdeeduplot/kplotaxis.h86
-rw-r--r--libtdeedu/tdeeduplot/kplotobject.cpp49
-rw-r--r--libtdeedu/tdeeduplot/kplotobject.h205
-rw-r--r--libtdeedu/tdeeduplot/kplotwidget.cpp405
-rw-r--r--libtdeedu/tdeeduplot/kplotwidget.h264
8 files changed, 1079 insertions, 0 deletions
diff --git a/libtdeedu/tdeeduplot/Makefile.am b/libtdeedu/tdeeduplot/Makefile.am
new file mode 100644
index 00000000..21b84f2a
--- /dev/null
+++ b/libtdeedu/tdeeduplot/Makefile.am
@@ -0,0 +1,15 @@
+INCLUDES= $(all_includes)
+SUBDIRS = .
+
+lib_LTLIBRARIES = libtdeeduplot.la
+
+libtdeeduplotincludedir = $(includedir)/libtdeedu
+libtdeeduplotinclude_HEADERS = kplotobject.h kplotaxis.h kplotwidget.h
+
+libtdeeduplot_la_SOURCES = kplotobject.cpp kplotaxis.cpp kplotwidget.cpp
+
+libtdeeduplot_la_LDFLAGS = $(all_libraries) -no-undefined -version-info 3:0:2
+libtdeeduplot_la_LIBADD = $(LIB_TDECORE) $(LIB_QT)
+
+METASOURCES = AUTO
+
diff --git a/libtdeedu/tdeeduplot/README b/libtdeedu/tdeeduplot/README
new file mode 100644
index 00000000..ab695f9a
--- /dev/null
+++ b/libtdeedu/tdeeduplot/README
@@ -0,0 +1,23 @@
+This library provides KPlotWidget and KPlotObject classes.
+
+KPlotWidget is a QWidget-derived class that provides a virtual baseclass
+for easy data-plotting. The idea behind KPlotWidget is that you only have
+to specify information in "data units"; i.e., the natural units of the
+data being plotted. KPlotWidget automatically converts everything
+to screen pixel units.
+
+KPlotWidget draws X and Y axes with tickmarks and tick labels. It
+automatically determines how many tickmarks to use and where they should
+be, based on the data limits specified for the plot. You change the limits
+by calling setLimits( double x1, double x2, double y1, double y2 ), and
+then calling updateTickmarks() to recompute the positions of tickmarks
+and ticklabels.
+
+Data to be plotted are stored using the KPlotObject class. KPlotObject
+consists of a QPtrList of DPoints, each specifying the X,Y coordinates
+of a data point (DPoint is like QPoint, but the X and Y values are doubles
+instead of ints). KPlotObject also specifies the "type" of data to be
+plotted (POINTS or CURVE or POLYGON or LABEL).
+
+Jason Harris
+kstars@30doradus.org
diff --git a/libtdeedu/tdeeduplot/kplotaxis.cpp b/libtdeedu/tdeeduplot/kplotaxis.cpp
new file mode 100644
index 00000000..69af4673
--- /dev/null
+++ b/libtdeedu/tdeeduplot/kplotaxis.cpp
@@ -0,0 +1,32 @@
+/***************************************************************************
+ kplotaxis.cpp - An axis for the plot widget
+ -------------------
+ begin : 16 June 2005
+ copyright : (C) 2005 by Andreas Nicolai
+ email : Andreas.Nicolai@gmx.net
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * 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. *
+ * *
+ ***************************************************************************/
+
+#include <tqpainter.h>
+#include <kdebug.h>
+#include <klocale.h>
+#include "kplotaxis.h"
+
+KPlotAxis::KPlotAxis() : m_visible(true), m_labelFieldWidth(0), m_labelFmt('g'),
+ m_labelPrec(2)
+{
+}
+
+KPlotAxis::KPlotAxis(const TQString& label) : m_visible(true), m_label(label),
+ m_labelFieldWidth(0), m_labelFmt('g'), m_labelPrec(2)
+{
+}
+
diff --git a/libtdeedu/tdeeduplot/kplotaxis.h b/libtdeedu/tdeeduplot/kplotaxis.h
new file mode 100644
index 00000000..3209b18c
--- /dev/null
+++ b/libtdeedu/tdeeduplot/kplotaxis.h
@@ -0,0 +1,86 @@
+/***************************************************************************
+ kplotaxis.h - An axis for the plot widget
+ -------------------
+ begin : 16 June 2005
+ copyright : (C) 2005 by Andreas Nicolai
+ email : Andreas.Nicolai@gmx.net
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * 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 KPLOTAXIS_H
+#define KPLOTAXIS_H
+
+#include <tqstring.h>
+
+#include <kdemacros.h>
+
+/**class KPlotAxis
+ *@short Contains all data for drawing an axis including format specification axis labels.
+ *@author Andreas Nicolai
+ *@version 1.0
+ */
+class KDE_EXPORT KPlotAxis {
+public:
+
+ /**@short Default constructor, creates a default axis. */
+ KPlotAxis();
+
+ /**@short Constructor, constructs a labeled axis. */
+ KPlotAxis(const TQString& label);
+
+ /**@short Destructor. */
+ virtual ~KPlotAxis() {}
+
+ /**@short Returns whether the axis is visible or not. */
+ virtual bool isVisible() const { return m_visible; }
+
+ /**@short Sets the "visible" property of the axis. */
+ virtual void setVisible(bool visible) { m_visible = visible; }
+
+ /**@short Shows the axis (axis will be shown at next update of plot widget). */
+ virtual void show() { m_visible = true; }
+
+ /**@short Hides the axis (axis will be hidden at next update of plot widget). */
+ virtual void hide() { m_visible = false; }
+
+ /**@short Sets the axis label.
+ *@param label A short string describing the data plotted on the axis.
+ *Set the label to an empty string to omit the axis label.
+ */
+ virtual void setLabel( const TQString& label ) { m_label = label; }
+
+ /**@short Returns the axis label. */
+ virtual TQString label() const { return m_label; }
+
+ /**@short Set the number format for the tick labels, see TQString::arg() for
+ description of arguments.
+ */
+ virtual void setLabelFormat(int fieldWidth, char fmt = 'g', int prec=-1) {
+ m_labelFieldWidth = fieldWidth; m_labelFmt = fmt; m_labelPrec = prec; }
+
+ /**@short Returns the field width of the tick labels. */
+ virtual int labelFieldWidth() const { return m_labelFieldWidth; }
+
+ /**@short Returns the number format of the tick labels. */
+ virtual char labelFmt() const { return m_labelFmt; }
+
+ /**@short Returns the number precision of the tick labels. */
+ virtual int labelPrec() const { return m_labelPrec; }
+
+private:
+ bool m_visible; ///< Property "visible" defines if Axis is drawn or not.
+ TQString m_label; ///< The label of the axis.
+ int m_labelFieldWidth; ///< Field width for number labels, see TQString::arg().
+ char m_labelFmt; ///< Number format for number labels, see TQString::arg().
+ int m_labelPrec; ///< Number precision for number labels, see TQString::arg().
+};
+
+#endif // KPLOTAXIS_H
diff --git a/libtdeedu/tdeeduplot/kplotobject.cpp b/libtdeedu/tdeeduplot/kplotobject.cpp
new file mode 100644
index 00000000..b5aaf8d8
--- /dev/null
+++ b/libtdeedu/tdeeduplot/kplotobject.cpp
@@ -0,0 +1,49 @@
+/***************************************************************************
+ kplotobject.cpp - 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. *
+ * *
+ ***************************************************************************/
+
+#include <tqpainter.h>
+#include <kdebug.h>
+#include "kplotobject.h"
+
+KPlotObject::KPlotObject() {
+ KPlotObject( "", "white", POINTS );
+}
+
+KPlotObject::KPlotObject( const TQString &n, const TQString &c, PTYPE t, unsigned int s, unsigned int p ) {
+ //We use the set functions because they may include data validation
+ setName( n );
+ setColor( c );
+ setType( t );
+ setSize( s );
+ setParam( p );
+
+ pList.setAutoDelete( true );
+}
+
+KPlotObject::~KPlotObject()
+{
+}
+
+void KPlotObject::removePoint( unsigned int index ) {
+ if ( index > pList.count() - 1 ) {
+ kdWarning() << "Ignoring attempt to remove non-existent plot object" << endl;
+ return;
+ }
+
+ pList.remove( index );
+}
+
diff --git a/libtdeedu/tdeeduplot/kplotobject.h b/libtdeedu/tdeeduplot/kplotobject.h
new file mode 100644
index 00000000..f1074cb6
--- /dev/null
+++ b/libtdeedu/tdeeduplot/kplotobject.h
@@ -0,0 +1,205 @@
+/***************************************************************************
+ 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 TQString;
+class TQPainter;
+
+#include <kdemacros.h>
+
+/**class DRect
+ *@short equivalent of TQRect 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 TQPoint 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; }
+
+ TQPoint qpoint( TQRect 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 TQPoint( 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 TQPoints, an object type, a color, a size,
+ *and a TQString 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 TQPainter.
+ */
+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 TQt::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 TQString &name, const TQString &color, PTYPE otype, unsigned int size=2, unsigned int param=0 );
+
+/**Destructor (empty)
+ */
+ ~KPlotObject();
+
+/**@return the KPlotObject's Name
+ */
+ TQString name() const { return Name; }
+
+/**@short set the KPlotObject's Name
+ *@param n the new name
+ */
+ void setName( const TQString &n ) { Name = n; }
+
+/**@return the KPlotObject's Color
+ */
+ TQString color() const { return Color; }
+
+/**@short set the KPlotObject's Color
+ *@param c the new color
+ */
+ void setColor( const TQString &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); }
+
+ TQPtrList<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 TQPoint 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 TQPoints currently in the list
+ */
+ unsigned int count() const { return pList.count(); }
+
+/**@short clear the Object's points list
+ */
+ void clearPoints() { pList.clear(); }
+
+private:
+ TQPtrList<DPoint> pList;
+ PTYPE Type;
+ unsigned int Size, Parameter;
+ TQString Color, Name;
+};
+
+#endif
diff --git a/libtdeedu/tdeeduplot/kplotwidget.cpp b/libtdeedu/tdeeduplot/kplotwidget.cpp
new file mode 100644
index 00000000..5f13de6e
--- /dev/null
+++ b/libtdeedu/tdeeduplot/kplotwidget.cpp
@@ -0,0 +1,405 @@
+/***************************************************************************
+ kplotwidget.cpp - A widget for plotting in KStars
+ -------------------
+ 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. *
+ * *
+ ***************************************************************************/
+
+#include <math.h> //for log10(), pow(), modf()
+#include <kdebug.h>
+#include <tqpainter.h>
+#include <tqpixmap.h>
+
+#include "kplotwidget.h"
+#include "kplotwidget.moc"
+
+KPlotWidget::KPlotWidget( double x1, double x2, double y1, double y2, TQWidget *parent, const char* name )
+ : TQWidget( parent, name, WNoAutoErase ),
+ dXtick(0.0), dYtick(0.0),
+ nmajX(0), nminX(0), nmajY(0), nminY(0),
+ ShowTickMarks( true ), ShowTickLabels( true ), ShowGrid( false )
+ {
+ setBackgroundMode( TQWidget::NoBackground );
+
+ //set DataRect
+ setLimits( x1, x2, y1, y2 );
+ setDefaultPadding();
+
+ //Set PixRect (starts at (0,0) because we will translate by leftPadding(), topPadding() )
+ PixRect = TQRect( 0, 0, width() - leftPadding() - rightPadding(),
+ height() - topPadding() - bottomPadding() );
+
+ buffer = new TQPixmap();
+
+ //default colors:
+ setBGColor( TQColor( "black" ) );
+ setFGColor( TQColor( "white" ) );
+ setGridColor( TQColor( "grey" ) );
+
+ ObjectList.setAutoDelete( true );
+}
+
+KPlotWidget::~KPlotWidget()
+{
+ delete (buffer);
+}
+
+void KPlotWidget::setLimits( double x1, double x2, double y1, double y2 ) {
+ double XA1, XA2, YA1, YA2;
+ if (x2<x1) { XA1=x2; XA2=x1; }
+ else { XA1=x1; XA2=x2; }
+ if ( y2<y1) { YA1=y2; YA2=y1; }
+ else { YA1=y1; YA2=y2; }
+
+ DataRect = DRect( XA1, YA1, XA2-XA1, YA2-YA1 );
+ updateTickmarks();
+}
+
+void KPlotWidget::updateTickmarks() {
+ // Determine the number and spacing of tickmarks for the current plot limits.
+ if ( dataWidth() == 0.0 ) {
+ kdWarning() << "X range invalid! " << x() << " to " << x2() << endl;
+ DataRect.setWidth( 1.0 );
+ return;
+ }
+ if ( dataHeight() == 0.0 ) {
+ kdWarning() << "Y range invalid! " << y() << " to " << y2() << endl;
+ DataRect.setHeight( 1.0 );
+ return;
+ }
+
+ int nmajor(0), nminor(0);
+ double z(0.0), z2(0.0);
+ double Range(0.0), s(0.0), t(0.0), pwr(0.0), dTick(0.0);
+
+ //loop over X and Y axes...the z variables substitute for either X or Y
+ for ( unsigned int iaxis=0; iaxis<2; ++iaxis ) {
+ if ( iaxis == 1 ) {
+ z = x(); z2 = x2();
+ } else {
+ z = y(); z2 = y2();
+ }
+
+ //determine size of region to be drawn, in draw units
+ Range = z2 - z;
+
+ //s is the power-of-ten factor of Range:
+ //Range = t * s; s = 10^(pwr). e.g., Range=350.0 then t=3.5, s = 100.0; pwr = 2.0
+ modf( log10(Range), &pwr );
+ s = pow( 10.0, pwr );
+ t = Range/s;
+
+ //adjust s and t such that t is between 3 and 5:
+ if ( t < 3.0 ) { t *= 10.0; s /= 10.0; } //t now btwn 3 and 30
+ if ( t < 6.0 ) { //accept current values
+ dTick = s;
+ nmajor = int(t);
+ nminor = 5;
+ } else if ( t < 10.0 ) { //factor of 2
+ dTick = s*2.0;
+ nmajor = int(t/2.0);
+ nminor = 4;
+ } else if ( t < 20.0 ) { //factor of 4
+ dTick = s*4.0;
+ nmajor = int(t/4.0);
+ nminor = 4;
+ } else { //factor of 5
+ dTick = s*5.0;
+ nmajor = int(t/5.0);
+ nminor = 5;
+ }
+
+ if ( iaxis==1 ) { //X axis
+ nmajX = nmajor;
+ nminX = nminor;
+ dXtick = dTick;
+ } else { //Y axis
+ nmajY = nmajor;
+ nminY = nminor;
+ dYtick = dTick;
+ }
+ } //end for iaxis
+}
+
+void KPlotWidget::resizeEvent( TQResizeEvent* /* e */ ) {
+ int newWidth = width() - leftPadding() - rightPadding();
+ int newHeight = height() - topPadding() - bottomPadding();
+ PixRect = TQRect( 0, 0, newWidth, newHeight );
+
+ buffer->resize( width(), height() );
+}
+
+void KPlotWidget::paintEvent( TQPaintEvent* /* e */ ) {
+ TQPainter p;
+
+ p.begin( buffer );
+ p.fillRect( 0, 0, width(), height(), bgColor() );
+ p.translate( leftPadding(), topPadding() );
+
+ drawObjects( &p );
+ drawBox( &p );
+
+ p.end();
+ bitBlt( this, 0, 0, buffer );
+}
+
+void KPlotWidget::drawObjects( TQPainter *p ) {
+ for ( KPlotObject *po = ObjectList.first(); po; po = ObjectList.next() ) {
+
+ if ( po->points()->count() ) {
+ //draw the plot object
+ p->setPen( TQColor( po->color() ) );
+
+ switch ( po->type() ) {
+ case KPlotObject::POINTS :
+ {
+ p->setBrush( TQColor( po->color() ) );
+
+ for ( DPoint *dp = po->points()->first(); dp; dp = po->points()->next() ) {
+ TQPoint q = dp->qpoint( PixRect, DataRect );
+ int x1 = q.x() - po->size()/2;
+ int y1 = q.y() - po->size()/2;
+
+ switch( po->param() ) {
+ case KPlotObject::CIRCLE : p->drawEllipse( x1, y1, po->size(), po->size() ); break;
+ case KPlotObject::SQUARE : p->drawRect( x1, y1, po->size(), po->size() ); break;
+ case KPlotObject::LETTER : p->drawText( q, po->name().left(1) ); break;
+ default: p->drawPoint( q );
+ }
+ }
+
+ p->setBrush( TQt::NoBrush );
+ break;
+ }
+
+ case KPlotObject::CURVE :
+ {
+ p->setPen( TQPen( TQColor( po->color() ), po->size(), (TQPen::PenStyle)po->param() ) );
+ DPoint *dp = po->points()->first();
+ p->moveTo( dp->qpoint( PixRect, DataRect ) );
+ for ( dp = po->points()->next(); dp; dp = po->points()->next() )
+ p->lineTo( dp->qpoint( PixRect, DataRect ) );
+ break;
+ }
+
+ case KPlotObject::LABEL : //draw label centered at point in x, and slightly below point in y.
+ {
+ TQPoint q = po->points()->first()->qpoint( PixRect, DataRect );
+ p->drawText( q.x()-20, q.y()+6, 40, 10, TQt::AlignCenter | TQt::DontClip, po->name() );
+ break;
+ }
+
+ case KPlotObject::POLYGON :
+ {
+ p->setPen( TQPen( TQColor( po->color() ), po->size(), (TQPen::PenStyle)po->param() ) );
+ p->setBrush( TQColor( po->color() ) );
+
+ TQPointArray a( po->count() );
+
+ unsigned int i=0;
+ for ( DPoint *dp = po->points()->first(); dp; dp = po->points()->next() )
+ a.setPoint( i++, dp->qpoint( PixRect, DataRect ) );
+
+ p->drawPolygon( a );
+ break;
+ }
+
+ case KPlotObject::UNKNOWN_TYPE : break;
+ }
+ }
+ }
+}
+
+double KPlotWidget::dmod( double a, double b ) { return ( b * ( ( a / b ) - int( a / b ) ) ); }
+
+void KPlotWidget::drawBox( TQPainter *p ) {
+ //First, fill in padding region with bgColor() to mask out-of-bounds plot data
+ p->setPen( bgColor() );
+ p->setBrush( bgColor() );
+
+ //left padding ( don't forget: we have translated by XPADDING, YPADDING )
+ p->drawRect( -leftPadding(), -topPadding(), leftPadding(), height() );
+
+ //right padding
+ p->drawRect( PixRect.width(), -topPadding(), rightPadding(), height() );
+
+ //top padding
+ p->drawRect( 0, -topPadding(), PixRect.width(), topPadding() );
+
+ //bottom padding
+ p->drawRect( 0, PixRect.height(), PixRect.width(), bottomPadding() );
+
+ if ( ShowGrid ) {
+ //Grid lines are placed at locations of primary axes' major tickmarks
+ p->setPen( gridColor() );
+
+ //vertical grid lines
+ double x0 = x() - dmod( x(), dXtick ); //zeropoint; x(i) is this plus i*dXtick1
+ for ( int ix = 0; ix <= nmajX+1; ix++ ) {
+ int px = int( PixRect.width() * ( (x0 + ix*dXtick - x())/dataWidth() ) );
+ p->drawLine( px, 0, px, PixRect.height() );
+ }
+
+ //horizontal grid lines
+ double y0 = y() - dmod( y(), dYtick ); //zeropoint; y(i) is this plus i*mX
+ for ( int iy = 0; iy <= nmajY+1; iy++ ) {
+ int py = PixRect.height() - int( PixRect.height() * ( (y0 + iy*dYtick - y())/dataHeight() ) );
+ p->drawLine( 0, py, PixRect.width(), py );
+ }
+ }
+
+ p->setPen( fgColor() );
+ p->setBrush( TQt::NoBrush );
+
+ if (BottomAxis.isVisible() || LeftAxis.isVisible()) p->drawRect( PixRect ); //box outline
+
+ if ( ShowTickMarks ) {
+ //spacing between minor tickmarks (in data units)
+ double dminX = dXtick/nminX;
+ double dminY = dYtick/nminY;
+
+ //set small font for tick labels
+ TQFont f = p->font();
+ int s = f.pointSize();
+ f.setPointSize( s - 2 );
+ p->setFont( f );
+
+ //--- Draw bottom X Axis ---//
+ if (BottomAxis.isVisible()) {
+ // Draw X tickmarks
+ double x0 = x() - dmod( x(), dXtick ); //zeropoint; tickmark i is this plus i*dXtick (in data units)
+ if ( x() < 0.0 ) x0 -= dXtick;
+
+ for ( int ix = 0; ix <= nmajX+1; ix++ ) {
+ //position of tickmark i (in screen units)
+ int px = int( PixRect.width() * ( (x0 + ix*dXtick - x() )/dataWidth() ) );
+
+ if ( px > 0 && px < PixRect.width() ) {
+ p->drawLine( px, PixRect.height() - 2, px, PixRect.height() - BIGTICKSIZE - 2 );
+ p->drawLine( px, 0, px, BIGTICKSIZE );
+ }
+
+ //tick label
+ if ( ShowTickLabels ) {
+ double lab = x0 + ix*dXtick;
+ if ( fabs(lab)/dXtick < 0.00001 ) lab = 0.0; //fix occassional roundoff error with "0.0" label
+
+ TQString str = TQString( "%1" ).tqarg( lab, BottomAxis.labelFieldWidth(), BottomAxis.labelFmt(), BottomAxis.labelPrec() );
+ if ( px > 0 && px < PixRect.width() ) {
+ TQRect r( px - BIGTICKSIZE, PixRect.height()+BIGTICKSIZE, 2*BIGTICKSIZE, BIGTICKSIZE );
+ p->drawText( r, TQt::AlignCenter | TQt::DontClip, str );
+ }
+ }
+
+ //draw minor ticks
+ for ( int j=0; j < nminX; j++ ) {
+ //position of minor tickmark j (in screen units)
+ int pmin = int( px + PixRect.width()*j*dminX/dataWidth() );
+
+ if ( pmin > 0 && pmin < PixRect.width() ) {
+ p->drawLine( pmin, PixRect.height() - 2, pmin, PixRect.height() - SMALLTICKSIZE - 2 );
+ p->drawLine( pmin, 0, pmin, SMALLTICKSIZE );
+ }
+ }
+ } // end draw X tickmarks
+
+ // Draw X Axis Label
+ if ( ! BottomAxis.label().isEmpty() ) {
+ TQRect r( 0, PixRect.height() + 2*YPADDING, PixRect.width(), YPADDING );
+ p->drawText( r, TQt::AlignCenter, BottomAxis.label() );
+ }
+
+ }
+
+ //--- Draw left Y Axis ---//
+ if (LeftAxis.isVisible()) {
+ // Draw Y tickmarks
+ double y0 = y() - dmod( y(), dYtick ); //zeropoint; tickmark i is this plus i*dYtick1 (in data units)
+ if ( y() < 0.0 ) y0 -= dYtick;
+
+ for ( int iy = 0; iy <= nmajY+1; iy++ ) {
+ //position of tickmark i (in screen units)
+ int py = PixRect.height() - int( PixRect.height() * ( (y0 + iy*dYtick - y())/dataHeight() ) );
+ if ( py > 0 && py < PixRect.height() ) {
+ p->drawLine( 0, py, BIGTICKSIZE, py );
+ p->drawLine( PixRect.width()-2, py, PixRect.width()-BIGTICKSIZE-2, py );
+ }
+
+ //tick label
+ if ( ShowTickLabels ) {
+ double lab = y0 + iy*dYtick;
+ if ( fabs(lab)/dYtick < 0.00001 ) lab = 0.0; //fix occassional roundoff error with "0.0" label
+
+ TQString str = TQString( "%1" ).tqarg( lab, LeftAxis.labelFieldWidth(), LeftAxis.labelFmt(), LeftAxis.labelPrec() );
+ if ( py > 0 && py < PixRect.height() ) {
+ TQRect r( -2*BIGTICKSIZE, py-SMALLTICKSIZE, 2*BIGTICKSIZE, 2*SMALLTICKSIZE );
+ p->drawText( r, TQt::AlignCenter | TQt::DontClip, str );
+ }
+ }
+
+ //minor ticks
+ for ( int j=0; j < nminY; j++ ) {
+ //position of minor tickmark j (in screen units)
+ int pmin = int( py - PixRect.height()*j*dminY/dataHeight() );
+ if ( pmin > 0 && pmin < PixRect.height() ) {
+ p->drawLine( 0, pmin, SMALLTICKSIZE, pmin );
+ p->drawLine( PixRect.width()-2, pmin, PixRect.width()-SMALLTICKSIZE-2, pmin );
+ }
+ }
+ } // end draw Y tickmarks
+
+ //Draw Y Axis Label. We need to draw the text sideways.
+ if ( ! LeftAxis.label().isEmpty() ) {
+ //store current painter translation/rotation state
+ p->save();
+
+ //translate coord sys to left corner of axis label rectangle, then rotate 90 degrees.
+ p->translate( -3*XPADDING, PixRect.height() );
+ p->rotate( -90.0 );
+
+ TQRect r( 0, 0, PixRect.height(), XPADDING );
+ p->drawText( r, TQt::AlignCenter, LeftAxis.label() ); //draw the label, now that we are sideways
+
+ p->restore(); //restore translation/rotation state
+ }
+ }
+
+ } //end if ( ShowTickMarks )
+
+
+}
+
+int KPlotWidget::leftPadding() const {
+ if ( LeftPadding >= 0 ) return LeftPadding;
+ if ( ! LeftAxis.label().isEmpty() && ShowTickLabels ) return 3*XPADDING;
+ if ( ! LeftAxis.label().isEmpty() || ShowTickLabels ) return 2*XPADDING;
+ return XPADDING;
+}
+
+int KPlotWidget::rightPadding() const {
+ if ( RightPadding >= 0 ) return RightPadding;
+ return XPADDING;
+}
+
+int KPlotWidget::topPadding() const {
+ if ( TopPadding >= 0 ) return TopPadding;
+ return YPADDING;
+}
+
+int KPlotWidget::bottomPadding() const {
+ if ( BottomPadding >= 0 ) return BottomPadding;
+ if ( ! BottomAxis.label().isEmpty() && ShowTickLabels ) return 3*YPADDING;
+ if ( ! BottomAxis.label().isEmpty() || ShowTickLabels ) return 2*YPADDING;
+ return YPADDING;
+}
+
diff --git a/libtdeedu/tdeeduplot/kplotwidget.h b/libtdeedu/tdeeduplot/kplotwidget.h
new file mode 100644
index 00000000..c886bbaf
--- /dev/null
+++ b/libtdeedu/tdeeduplot/kplotwidget.h
@@ -0,0 +1,264 @@
+/***************************************************************************
+ 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