libkpl  5.0
A Library for Graphical Presentation of Data Sets and Functions
Public Types | Public Member Functions | Public Attributes | Protected Member Functions | Protected Attributes | List of all members
ParFunItem Class Reference

Parametric function item class. More...

#include <parfunitem.h>

Inheritance diagram for ParFunItem:
Inheritance graph
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Public Types

enum  { Type = UserType + ParFunction }
 Specific QGraphicsItem type number for function type() More...
 
- Public Types inherited from FunItem
enum  { Type = UserType + Function }
 Specific QGraphicsItem type number for function type() More...
 
- Public Types inherited from KplItem
enum  FillStyle {
  NoBrush, SolidPattern, HorPattern, VerPattern,
  CrossPattern, BDiagPattern, FDiagPattern, DiagCrossPattern
}
 Fill styles. More...
 
enum  ItemType {
  Frame = 1, Array, Function, ParFunction,
  Spline, Array3D, Function3D, Legend,
  Text, Line, Arrow, Arc,
  Rectangle, Ellipse, Image, ScaleBar
}
 Item types. More...
 
enum  PenType { FramePen, GridPen, DataPen }
 Pen types. More...
 
enum  Symbol {
  Invisible = -17, FilledOctagon, FilledHourglass, FilledTriangle,
  FilledSquare, FilledDiamond, FilledCircle, Umbrella,
  Ypsilon, Plus, Cross, OpenOctagon,
  OpenHourglass, OpenTriangle, OpenSquare, OpenDiamond,
  Dot, OpenCircle, SolidLine, DashLine1,
  DashLine2, DotLine1, DashLine3, DashDotLine,
  DashLine4, DashLine5, DotLine2
}
 Symbol types. More...
 

Public Member Functions

 ParFunItem (const QUrl &urlX=QUrl(), const QString &nameX="", const QUrl &urlY=QUrl(), const QString &nameY="", unsigned color=0, Symbol symbol=SolidLine, double fx=1, double fy=1, QGraphicsItem *parent=0, double tMin=0, double tMax=0, double deltaT=0, bool visible=true, FillStyle fillStyle=NoBrush, double xOffset=0, double yOffset=0, double relSize=1)
 Constructor. More...
 
 ParFunItem (const ParFunItem &a)
 Copy constructor. More...
 
 ParFunItem (const KConfigGroup *plo, const QUrl &urlPlo, unsigned color=0, Symbol symbol=SolidLine, QGraphicsItem *parent=0)
 Constructor. More...
 
virtual ~ParFunItem ()
 Destructor. More...
 
virtual QRectF boundingRect () const
 Calculates bounding rectangle. More...
 
int calcTable () const
 Calculates function value table. More...
 
void exponent (int &expX, int &expY, double &fx, double &fy) const
 Calculates normalization factors. More...
 
void exportTable (QTextStream &stream, char separator, char format, int precision) const
 Exports function value table to file. More...
 
const QLibrarylibX () const
 Returns pointer to library for x function. More...
 
void limits (double &xMin, double &xMax, double &yMin, double &yMax) const
 Calculates minimum and maximum values. More...
 
QString nameX () const
 Returns x function name. More...
 
virtual void paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=0)
 Paints item. More...
 
double * parX ()
 Returns x function parameter array pointer. More...
 
void setDashOffset ()
 Sets offset for dashed lines. More...
 
bool setFuncX (const QUrl &url, const QString &name)
 Resolves x function address. More...
 
virtual void setPar (int i, double value, bool yFun)
 Sets parameter. More...
 
virtual int type () const
 Returns specific QGraphicsItem type number. More...
 
const QUrlurlX () const
 Returns URL of x function library. More...
 
void writePlo (KConfigGroup *plo, const QUrl &urlPlo, bool absolute, char format, int precision) const
 Writes into plot file. More...
 
double * xValues () const
 Returns pointer to x function value array. More...
 
- Public Member Functions inherited from FunItem
 FunItem ()
 Constructor. More...
 
 FunItem (const FunItem &a)
 Copy constructor. More...
 
 FunItem (const KConfigGroup *plo, const QUrl &urlPlo, unsigned color=0, Symbol symbol=SolidLine, QGraphicsItem *parent=0)
 Constructor. More...
 
 FunItem (const QUrl &url, const QString &name, unsigned color=0, Symbol symbol=SolidLine, double fx=1, double fy=1, QGraphicsItem *parent=0, double xMin=0, double xMax=0, double deltaX=0, bool visible=true, FillStyle fillStyle=NoBrush, double xOffset=0, double yOffset=0, double relSize=1)
 Constructor. More...
 
virtual ~FunItem ()
 Destructor. More...
 
int calcTable () const
 Calculates function value table. More...
 
int calcTable (bool logX) const
 Calculates function value table. More...
 
double deltaT () const
 Returns argument step size. More...
 
void exponent (int &expX, int &expY, double &fx, double &fy, bool logX) const
 Calculates normalization factors. More...
 
void exportTable (QTextStream &stream, char separator, char format, int precision) const
 Exports function value table to file. More...
 
const QLibrarylibY () const
 Returns pointer to library for y function. More...
 
void limits (double &xMin, double &xMax, double &yMin, double &yMax, bool logX) const
 Calculates minimum and maximum values. More...
 
QString nameY () const
 Returns y function name. More...
 
double * parY ()
 Returns y function parameter array pointer. More...
 
void setDashOffset ()
 Sets offset for dashed lines. More...
 
void setDeltaT (double deltaT)
 Sets argument step size. More...
 
bool setFuncY (const QUrl &url, const QString &name)
 Resolves y function address. More...
 
void setTMax (double xMax)
 Sets maximum argument value. More...
 
void setTMin (double xMin)
 Sets minimum argument value. More...
 
virtual QPainterPath shape () const
 Returns the shape of the plot item. More...
 
double tMax () const
 Returns maximum argument value. More...
 
double tMin () const
 Returns minimum argument value. More...
 
const double * tValues () const
 Returns pointer to argument value array. More...
 
const QUrlurlY () const
 Returns URL of y function library. More...
 
void writePlo (KConfigGroup *plo, const QUrl &urlPlo, bool absolute, char format, int precision) const
 Writes into plot file. More...
 
double * yValues () const
 Returns pointer to y function value array. More...
 
- Public Member Functions inherited from ScaledItem
 ScaledItem ()
 Constructor. More...
 
 ScaledItem (const ScaledItem &a)
 Copy constructor. More...
 
 ScaledItem (const KConfigGroup *plo, Symbol symbol, unsigned color, QGraphicsItem *parent)
 Constructor. More...
 
 ScaledItem (FillStyle fillStyle, Symbol symbol, unsigned color, double fx, double fy, double xOffset, double yOffset, double relSize, QGraphicsItem *parent)
 Constructor. More...
 
virtual ~ScaledItem ()
 Destructor. More...
 
unsigned color () const
 Returns color. More...
 
FillStyle fillStyle () const
 Returns fill style. More...
 
bool isNormalized (double fx, double fy) const
 Checks if both normalization factors are equal to given values. More...
 
void normalize (double fx, double fy)
 Sets normalization factors. More...
 
double normX () const
 Returns normalization factor for x values. More...
 
double normY () const
 Returns normalization factor for y values. More...
 
QPixmap pixmap () const
 Returns decoration pixmap for item list. More...
 
void readPlo (const KConfigGroup *plo, Symbol symbol, unsigned color)
 Initializes corresponding to plot file. More...
 
void setColor (unsigned color)
 Sets color. More...
 
void setFillStyle (FillStyle style)
 Sets fill style. More...
 
void setNormX (double fx)
 Sets normalization factor for x values. More...
 
void setNormY (double fy)
 Sets normalization factor for y values. More...
 
void setProperties (const QTransform &m)
 Sets properties according to transformation matrix. More...
 
void setSize ()
 Sets size according to transformation matrix. More...
 
void setSymbol (Symbol symbol)
 Sets symbol type. More...
 
void setXOffset (double xOffset)
 Sets offset for x values. More...
 
void setYOffset (double yOffset)
 Sets offset for y values. More...
 
Symbol symbol () const
 Returns symbol type. More...
 
void update ()
 Applies changes and forces redrawing. More...
 
void updateGeometry ()
 Updates geometry. More...
 
void writePlo (KConfigGroup *plo, bool visible) const
 Writes into plot file. More...
 
double xOffset () const
 Returns offset for x values. More...
 
double yOffset () const
 Returns offset for y values. More...
 
- Public Member Functions inherited from KplItem
 KplItem (double relSize=1)
 Constructor. More...
 
 KplItem (const KplItem &a)
 Copy constructor. More...
 
 KplItem (const KConfigGroup *plo)
 Constructor. More...
 
virtual ~KplItem ()
 Destructor. More...
 
void readPlo (const KConfigGroup *plo)
 Initializes corresponding to plot file. More...
 
double relSize () const
 Returns relative size of item. More...
 
void setRelSize (double relSize)
 Sets relative size of item. More...
 
void writePlo (KConfigGroup *plo, bool visible=true) const
 Writes into plot file. More...
 
- Public Member Functions inherited from QGraphicsItem
 QGraphicsItem (QGraphicsItem *parent)
 
QGraphicsScenescene () const
 
QGraphicsItemparentItem () const
 
QGraphicsItemtopLevelItem () const
 
QGraphicsObjectparentObject () const
 
QGraphicsWidgetparentWidget () const
 
QGraphicsWidgettopLevelWidget () const
 
QGraphicsWidgetwindow () const
 
QGraphicsItempanel () const
 
void setParentItem (QGraphicsItem *newParent)
 
QList< QGraphicsItem * > children () const
 
QList< QGraphicsItem * > childItems () const
 
bool isWidget () const
 
bool isWindow () const
 
bool isPanel () const
 
QGraphicsObjecttoGraphicsObject ()
 
const QGraphicsObjecttoGraphicsObject () const
 
QGraphicsItemGroupgroup () const
 
void setGroup (QGraphicsItemGroup *group)
 
GraphicsItemFlags flags () const
 
void setFlag (GraphicsItemFlag flag, bool enabled)
 
void setFlags (GraphicsItemFlags flags)
 
CacheMode cacheMode () const
 
void setCacheMode (CacheMode mode, const QSize &logicalCacheSize)
 
PanelModality panelModality () const
 
void setPanelModality (PanelModality panelModality)
 
bool isBlockedByModalPanel (QGraphicsItem **blockingPanel) const
 
QString toolTip () const
 
void setToolTip (const QString &toolTip)
 
QCursor cursor () const
 
void setCursor (const QCursor &cursor)
 
bool hasCursor () const
 
void unsetCursor ()
 
bool isVisible () const
 
bool isVisibleTo (const QGraphicsItem *parent) const
 
void setVisible (bool visible)
 
void hide ()
 
void show ()
 
bool isEnabled () const
 
void setEnabled (bool enabled)
 
bool isSelected () const
 
void setSelected (bool selected)
 
bool acceptDrops () const
 
void setAcceptDrops (bool on)
 
qreal opacity () const
 
qreal effectiveOpacity () const
 
void setOpacity (qreal opacity)
 
QGraphicsEffectgraphicsEffect () const
 
void setGraphicsEffect (QGraphicsEffect *effect)
 
Qt::MouseButtons acceptedMouseButtons () const
 
void setAcceptedMouseButtons (Qt::MouseButtons buttons)
 
bool acceptsHoverEvents () const
 
void setAcceptsHoverEvents (bool enabled)
 
bool acceptHoverEvents () const
 
void setAcceptHoverEvents (bool enabled)
 
bool acceptTouchEvents () const
 
void setAcceptTouchEvents (bool enabled)
 
bool filtersChildEvents () const
 
void setFiltersChildEvents (bool enabled)
 
bool handlesChildEvents () const
 
void setHandlesChildEvents (bool enabled)
 
bool isActive () const
 
void setActive (bool active)
 
bool hasFocus () const
 
void setFocus (Qt::FocusReason focusReason)
 
void clearFocus ()
 
QGraphicsItemfocusProxy () const
 
void setFocusProxy (QGraphicsItem *item)
 
QGraphicsItemfocusItem () const
 
void grabMouse ()
 
void ungrabMouse ()
 
void grabKeyboard ()
 
void ungrabKeyboard ()
 
QPointF pos () const
 
qreal x () const
 
void setX (qreal x)
 
qreal y () const
 
void setY (qreal y)
 
QPointF scenePos () const
 
void setPos (const QPointF &pos)
 
void setPos (qreal x, qreal y)
 
void moveBy (qreal dx, qreal dy)
 
void ensureVisible (const QRectF &rect, int xmargin, int ymargin)
 
void ensureVisible (qreal x, qreal y, qreal w, qreal h, int xmargin, int ymargin)
 
QMatrix matrix () const
 
QMatrix sceneMatrix () const
 
void setMatrix (const QMatrix &matrix, bool combine)
 
void resetMatrix ()
 
QTransform transform () const
 
QTransform sceneTransform () const
 
QTransform deviceTransform (const QTransform &viewportTransform) const
 
QTransform itemTransform (const QGraphicsItem *other, bool *ok) const
 
void setTransform (const QTransform &matrix, bool combine)
 
void resetTransform ()
 
void rotate (qreal angle)
 
void scale (qreal sx, qreal sy)
 
void shear (qreal sh, qreal sv)
 
void translate (qreal dx, qreal dy)
 
void setRotation (qreal angle)
 
qreal rotation () const
 
void setScale (qreal factor)
 
qreal scale () const
 
QList< QGraphicsTransform * > transformations () const
 
void setTransformations (const QList< QGraphicsTransform * > &transformations)
 
QPointF transformOriginPoint () const
 
void setTransformOriginPoint (const QPointF &origin)
 
void setTransformOriginPoint (qreal x, qreal y)
 
virtual void advance (int phase)
 
qreal zValue () const
 
void setZValue (qreal z)
 
void stackBefore (const QGraphicsItem *sibling)
 
QRectF childrenBoundingRect () const
 
QRectF sceneBoundingRect () const
 
bool isClipped () const
 
QPainterPath clipPath () const
 
virtual bool contains (const QPointF &point) const
 
virtual bool collidesWithItem (const QGraphicsItem *other, Qt::ItemSelectionMode mode) const
 
virtual bool collidesWithPath (const QPainterPath &path, Qt::ItemSelectionMode mode) const
 
QList< QGraphicsItem * > collidingItems (Qt::ItemSelectionMode mode) const
 
bool isObscured (const QRectF &rect) const
 
bool isObscured (qreal x, qreal y, qreal w, qreal h) const
 
virtual bool isObscuredBy (const QGraphicsItem *item) const
 
virtual QPainterPath opaqueArea () const
 
QRegion boundingRegion (const QTransform &itemToDeviceTransform) const
 
qreal boundingRegionGranularity () const
 
void setBoundingRegionGranularity (qreal granularity)
 
void update (const QRectF &rect)
 
void update (qreal x, qreal y, qreal width, qreal height)
 
void scroll (qreal dx, qreal dy, const QRectF &rect)
 
QPointF mapToItem (const QGraphicsItem *item, const QPointF &point) const
 
QPointF mapToParent (const QPointF &point) const
 
QPointF mapToScene (const QPointF &point) const
 
QPolygonF mapToItem (const QGraphicsItem *item, const QRectF &rect) const
 
QPolygonF mapToParent (const QRectF &rect) const
 
QPolygonF mapToScene (const QRectF &rect) const
 
QRectF mapRectToItem (const QGraphicsItem *item, const QRectF &rect) const
 
QRectF mapRectToParent (const QRectF &rect) const
 
QRectF mapRectToScene (const QRectF &rect) const
 
QPolygonF mapToItem (const QGraphicsItem *item, const QPolygonF &polygon) const
 
QPolygonF mapToParent (const QPolygonF &polygon) const
 
QPolygonF mapToScene (const QPolygonF &polygon) const
 
QPainterPath mapToItem (const QGraphicsItem *item, const QPainterPath &path) const
 
QPainterPath mapToParent (const QPainterPath &path) const
 
QPainterPath mapToScene (const QPainterPath &path) const
 
QPointF mapFromItem (const QGraphicsItem *item, const QPointF &point) const
 
QPointF mapFromParent (const QPointF &point) const
 
QPointF mapFromScene (const QPointF &point) const
 
QPolygonF mapFromItem (const QGraphicsItem *item, const QRectF &rect) const
 
QPolygonF mapFromParent (const QRectF &rect) const
 
QPolygonF mapFromScene (const QRectF &rect) const
 
QRectF mapRectFromItem (const QGraphicsItem *item, const QRectF &rect) const
 
QRectF mapRectFromParent (const QRectF &rect) const
 
QRectF mapRectFromScene (const QRectF &rect) const
 
QPolygonF mapFromItem (const QGraphicsItem *item, const QPolygonF &polygon) const
 
QPolygonF mapFromParent (const QPolygonF &polygon) const
 
QPolygonF mapFromScene (const QPolygonF &polygon) const
 
QPainterPath mapFromItem (const QGraphicsItem *item, const QPainterPath &path) const
 
QPainterPath mapFromParent (const QPainterPath &path) const
 
QPainterPath mapFromScene (const QPainterPath &path) const
 
QPointF mapToItem (const QGraphicsItem *item, qreal x, qreal y) const
 
QPointF mapToParent (qreal x, qreal y) const
 
QPointF mapToScene (qreal x, qreal y) const
 
QPolygonF mapToItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapToParent (qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapToScene (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectToItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectToParent (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectToScene (qreal x, qreal y, qreal w, qreal h) const
 
QPointF mapFromItem (const QGraphicsItem *item, qreal x, qreal y) const
 
QPointF mapFromParent (qreal x, qreal y) const
 
QPointF mapFromScene (qreal x, qreal y) const
 
QPolygonF mapFromItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapFromParent (qreal x, qreal y, qreal w, qreal h) const
 
QPolygonF mapFromScene (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectFromItem (const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectFromParent (qreal x, qreal y, qreal w, qreal h) const
 
QRectF mapRectFromScene (qreal x, qreal y, qreal w, qreal h) const
 
bool isAncestorOf (const QGraphicsItem *child) const
 
QGraphicsItemcommonAncestorItem (const QGraphicsItem *other) const
 
bool isUnderMouse () const
 
QVariant data (int key) const
 
void setData (int key, const QVariant &value)
 
Qt::InputMethodHints inputMethodHints () const
 
void setInputMethodHints (Qt::InputMethodHints hints)
 
void installSceneEventFilter (QGraphicsItem *filterItem)
 
void removeSceneEventFilter (QGraphicsItem *filterItem)
 

Public Attributes

double(* funcX )(double, const double *)
 y function. More...
 
- Public Attributes inherited from FunItem
double(* funcY )(double, const double *)
 y function. More...
 
- Public Attributes inherited from QGraphicsItem
typedef GraphicsItemFlags
 

Protected Member Functions

void init ()
 Performs initialization. More...
 
void paintCond (QPainter *painter) const
 Paints or calculates bounding area. More...
 
void unloadX ()
 Unloads x function library. More...
 
- Protected Member Functions inherited from FunItem
void init ()
 Performs initialization. More...
 
void paintCond (QPainter *painter) const
 Paints or calculates bounding area. More...
 
void unload ()
 Unloads y function library. More...
 
- Protected Member Functions inherited from ScaledItem
double length (const double *x, const double *y, int n) const
 Calculates line length. More...
 
void plotArray (QPainter *painter, const double *x, const double *y, int n) const
 Plots array. More...
 
void setProperties ()
 Sets properties according to transformation matrix. More...
 
- Protected Member Functions inherited from KplItem
QPenchangePenWidth (QPen &pen, double width) const
 Changes pen width. More...
 
QPen createPen (QGraphicsItem *item, unsigned color=0, PenType penType=DataPen, Symbol symbol=SolidLine) const
 Creates pen for plot item. More...
 
double penWidth (const QGraphicsItem *item, PenType penType=DataPen) const
 Calculates pen width for plot item. More...
 
- Protected Member Functions inherited from QGraphicsItem
void updateMicroFocus ()
 
virtual bool sceneEventFilter (QGraphicsItem *watched, QEvent *event)
 
virtual bool sceneEvent (QEvent *event)
 
virtual void contextMenuEvent (QGraphicsSceneContextMenuEvent *event)
 
virtual void dragEnterEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void dragLeaveEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void dragMoveEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void dropEvent (QGraphicsSceneDragDropEvent *event)
 
virtual void focusInEvent (QFocusEvent *event)
 
virtual void focusOutEvent (QFocusEvent *event)
 
virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *event)
 
virtual void hoverMoveEvent (QGraphicsSceneHoverEvent *event)
 
virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *event)
 
virtual void keyPressEvent (QKeyEvent *event)
 
virtual void keyReleaseEvent (QKeyEvent *event)
 
virtual void mousePressEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseMoveEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *event)
 
virtual void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event)
 
virtual void wheelEvent (QGraphicsSceneWheelEvent *event)
 
virtual void inputMethodEvent (QInputMethodEvent *event)
 
virtual QVariant inputMethodQuery (Qt::InputMethodQuery query) const
 
virtual QVariant itemChange (GraphicsItemChange change, const QVariant &value)
 
void prepareGeometryChange ()
 

Protected Attributes

double(* funcXo )(double, const double *)
 
double m_parX [NumParMax]
 
double parXo [NumParMax]
 
QVector< double > m_xValues
 
QString m_nameX
 
QUrl m_urlX
 
QLibrarym_libX
 
- Protected Attributes inherited from FunItem
bool logXo
 
double m_tMin
 
double m_tMax
 
double m_deltaT
 
double tMino
 
double tMaxo
 
double deltaTo
 
double(* funcYo )(double, const double *)
 
double m_parY [NumParMax]
 
double parYo [NumParMax]
 
QVector< double > m_tValues
 
QVector< double > m_yValues
 
QString m_nameY
 
QUrl m_urlY
 
QLibrarym_libY
 
- Protected Attributes inherited from ScaledItem
FillStyle m_fillStyle
 
Symbol m_symbol
 
unsigned m_color
 
double m_normX
 
double m_normY
 
double m_xOffset
 
double m_yOffset
 
double dydx
 
double myDashOffset
 
QPen m_pen
 
QPainterPath bPath
 
QRectF bRect
 
QRectF symbRect
 
QTransform m_matrix
 
- Protected Attributes inherited from KplItem
double m_relSize
 

Additional Inherited Members

- Static Public Member Functions inherited from FunItem
static void calcTable (const double *x, double *values, double(*func)(double, const double *), const double *par, int n)
 Calculates function value table. More...
 
static bool errorStructChanged (const DataErrorStruct &e1, const DataErrorStruct &e2)
 Checks data error structures for differences. More...
 
static int fit (const QList< const ArrayItem * > *aList, QList< FunItem * > *fList, const bool *bFit, double *par, QVector< double > *resVector=0, QVector< double > *sigma=0, FunItem::DataErrorStruct *err=0, bool nonLin=true, double tol=1e-14, int itMax=100, LMFit *lm=0, double *chiSquare=0, double *corr=0, double *parErr=0, double *avgErr=0, QObject *parent=0)
 Performs fit of parameters of a set of functions to a set of arrays. More...
 
static bool parChanged (const double *p1, const double *p2)
 Checks parameter arrays for differences. More...
 
static QString parToString (const double *par, char format, int precision)
 Converts parameter array to string. More...
 
static void stringToPar (const QString &s, double *par)
 Converts string to parameter array values. More...
 
- Static Public Member Functions inherited from ScaledItem
static void exponent (double a, int &iExp, double &f)
 Calculates normalization factor. More...
 
static bool limits (double &xMin, double &xMax, const double *values, int n)
 Calculates minimum and maximum values of an array. More...
 
- Static Public Member Functions inherited from KplItem
static QUrl absoluteUrl (const QString &path, const QUrl &urlPlo)
 Constructs absolute file URL. More...
 
static QBrush createBrush (unsigned color, FillStyle fillStyle=NoBrush)
 Creates brush. More...
 
static QPen createPen (double width, unsigned color, PenType penType, Symbol symbol)
 Creates pen. More...
 
static void paintSymbol (QPainter *painter, const QRectF &rect, Symbol symbol=OpenCircle)
 Paints symbol. More...
 
static QPixmap pixmap (Symbol symbol)
 Returns black decoration pixmap of plot symbol for use in dialog GUI. More...
 
static QPixmap pixmap (QPen pen, Symbol symbol=SolidLine)
 Returns decoration pixmap of plot symbol for use in item lists. More...
 
static QString path (const QUrl &urlPlo, const QUrl &url, bool absolute=false)
 Constructs absolute or (if possible) relative file path. More...
 
static void resetDashOffset ()
 Resets offset for dashed lines. More...
 
static unsigned rgb (const QString &color)
 Converts rgb string to QRgb. More...
 
static unsigned rgbQt1 (unsigned rgb)
 Converts QRgb to Qt1 QRgb. More...
 
- Static Public Attributes inherited from FunItem
static const int NumParMax = 20
 Dimension of parameter arrays. More...
 
- Static Protected Member Functions inherited from KplItem
static double parentWidth (const QGraphicsItem *item)
 Returns width of item's parent frame or width of scene if the item has no parent item. More...
 
static double penWidthFactor (PenType penType)
 Returns factor to calculate pen width from frame width. More...
 
- Static Protected Attributes inherited from KplItem
static double m_dashOffset
 

Detailed Description

Parametric function item class.

Class for function items showing parametric functions by lines or markers.

Author
Werner Stille

Member Enumeration Documentation

anonymous enum

Specific QGraphicsItem type number for function type()

Enumerator
Type 

Specific QGraphicsItem type number of ParFunItem for function type().

Constructor & Destructor Documentation

ParFunItem::ParFunItem ( const QUrl urlX = QUrl(),
const QString nameX = "",
const QUrl urlY = QUrl(),
const QString nameY = "",
unsigned  color = 0,
Symbol  symbol = SolidLine,
double  fx = 1,
double  fy = 1,
QGraphicsItem parent = 0,
double  tMin = 0,
double  tMax = 0,
double  deltaT = 0,
bool  visible = true,
FillStyle  fillStyle = NoBrush,
double  xOffset = 0,
double  yOffset = 0,
double  relSize = 1 
)

Constructor.

Initializes corresponding to arguments.

Parameters
urlXURL of the x function library.
nameXx function name.
urlYURL of the y function library.
nameYy function name.
colorcolor for function plot.
symbolsymbol type.
fxnormalization factor for x values.
fynormalization factor for y values.
parentpointer to parent item.
tMinminimum argument value.
tMaxmaximum argument value.
deltaTargument step size.
visibletrue for visible item.
fillStylefill style.
xOffsetoffset for x values.
yOffsetoffset for x values.
relSizerelative size of lines or symbols.
ParFunItem::ParFunItem ( const ParFunItem a)

Copy constructor.

Parameters
asource item.
ParFunItem::ParFunItem ( const KConfigGroup *  plo,
const QUrl urlPlo,
unsigned  color = 0,
Symbol  symbol = SolidLine,
QGraphicsItem parent = 0 
)

Constructor.

Initializes corresponding to plot file.

Parameters
plopointer to KSimpleConfig object containing item data.
urlPloURL of plot file.
colordefault color for function plot.
symboldefault symbol type.
parentparent item.
virtual ParFunItem::~ParFunItem ( )
virtual

Destructor.

Member Function Documentation

virtual QRectF ParFunItem::boundingRect ( ) const
virtual

Calculates bounding rectangle.

Reimplemented from FunItem.

int ParFunItem::calcTable ( ) const

Calculates function value table.

Returns
number of rows.
void ParFunItem::exponent ( int &  expX,
int &  expY,
double &  fx,
double &  fy 
) const

Calculates normalization factors.

Parameters
expXreference to logarithm of x normalization factor.
expYreference to logarithm of x normalization factor.
fxreference to x normalization factor.
fyreference to y normalization factor.
void ParFunItem::exportTable ( QTextStream stream,
char  separator,
char  format,
int  precision 
) const

Exports function value table to file.

Parameters
streamstream for output file.
separatorcolumn separator character.
formatC format character.
precisionnumber of digits.
void ParFunItem::init ( )
protected

Performs initialization.

const QLibrary* ParFunItem::libX ( ) const
inline

Returns pointer to library for x function.

void ParFunItem::limits ( double &  xMin,
double &  xMax,
double &  yMin,
double &  yMax 
) const

Calculates minimum and maximum values.

Parameters
xMinreference to minimum of x values.
xMaxreference to maximum of x values.
yMinreference to minimum of y values.
yMaxreference to maximum of y values.
QString ParFunItem::nameX ( ) const
inline

Returns x function name.

virtual void ParFunItem::paint ( QPainter painter,
const QStyleOptionGraphicsItem option,
QWidget widget = 0 
)
virtual

Paints item.

Reimplemented from FunItem.

void ParFunItem::paintCond ( QPainter painter) const
protected

Paints or calculates bounding area.

Parameters
painterQPainter object, 0 for calculating bounding area.
double* ParFunItem::parX ( )
inline

Returns x function parameter array pointer.

void ParFunItem::setDashOffset ( )

Sets offset for dashed lines.

bool ParFunItem::setFuncX ( const QUrl url,
const QString name 
)

Resolves x function address.

Parameters
urlURL of the function library.
namefunction name.
Returns
true for success.
virtual void ParFunItem::setPar ( int  i,
double  value,
bool  yFun 
)
virtual

Sets parameter.

Parameters
iparameter index.
valuevalue.
yFuntrue for y value function.

Reimplemented from FunItem.

virtual int ParFunItem::type ( ) const
inlinevirtual

Returns specific QGraphicsItem type number.

Reimplemented from FunItem.

void ParFunItem::unloadX ( )
protected

Unloads x function library.

const QUrl& ParFunItem::urlX ( ) const
inline

Returns URL of x function library.

void ParFunItem::writePlo ( KConfigGroup *  plo,
const QUrl urlPlo,
bool  absolute,
char  format,
int  precision 
) const

Writes into plot file.

Parameters
ploKConfigGroup object.
urlPloURL of plot file.
absolutetrue to save absolute paths.
formatC format character.
precisionnumber of digits.
double* ParFunItem::xValues ( ) const

Returns pointer to x function value array.

Member Data Documentation

double(* ParFunItem::funcX) (double, const double *)

y function.


The documentation for this class was generated from the following file: