JKQTPlotter trunk/v5.0.0
an extensive Qt5+Qt6 Plotter framework (including a feature-richt plotter widget, a speed-optimized, but limited variant and a LaTeX equation renderer!), written fully in C/C++ and without external dependencies
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base class to hold an image from an 2-dimensional array of values More...

#include <jkqtpimage.h>

Inheritance diagram for JKQTPMathImageBase:
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Collaboration diagram for JKQTPMathImageBase:
[legend]

Public Member Functions

 JKQTPMathImageBase (double x, double y, double width, double height, JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPMathImageBase (double x, double y, double width, double height, JKQTPlotter *parent=nullptr)
 class constructor
 JKQTPMathImageBase (double x, double y, double width, double height, JKQTPMathImageDataType datatype, const void *data, int Nx, int Ny, JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPMathImageBase (double x, double y, double width, double height, JKQTPMathImageDataType datatype, const void *data, int Nx, int Ny, JKQTPlotter *parent)
 class constructor
 JKQTPMathImageBase (JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPMathImageBase (JKQTPlotter *parent)
 class constructor
virtual void drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
 plots a key marker inside the specified rectangle rect
virtual const void * getData () const
 points to the data array, holding the image
QVector< double > getDataAsDoubleVector () const
 returns the contents of the internal data image as a QVector<double>
virtual void getDataMinMax (double &imin, double &imax)
 determine min/max data value of the image
virtual const void * getDataModifier () const
 points to the data array, holding the modifier image
QVector< double > getDataModifierAsDoubleVector () const
 returns the contents of the internal modifier image as a QVector<double>
virtual JKQTPMathImageDataType getDatatype () const
 datatype of the data array data
virtual JKQTPMathImageDataType getDatatypeModifier () const
 datatype of the data array data
virtual void getModifierMinMax (double &imin, double &imax)
 determine min/max data value of the image
int getNx () const
 width of the data array data in pt
int getNy () const
 height of the data array data in pt
virtual void setData (const void *__value)
 points to the data array, holding the image
virtual void setData (const void *data, int Nx, int Ny)
 sets data ( points to the data array, holding the image ), as well as the size of data (Nx: width of the data array data in pt and Ny: height of the data array data in pt )
virtual void setData (const void *data, int Nx, int Ny, JKQTPMathImageDataType datatype)
 sets data ( points to the data array, holding the image ) and datatype ( datatype of the data array data ), as well as the size of data (Nx: width of the data array data in pt and Ny: height of the data array data in pt )
virtual void setDataModifier (const void *__value)
 points to the data array, holding the modifier image
virtual void setDataModifier (const void *data, JKQTPMathImageDataType datatype)
 sets dataModifier ( points to the data array, holding the modifier image ) and datatypeModifier ( datatype of the data array data )
virtual void setDatatype (JKQTPMathImageDataType __value)
 datatype of the data array data
virtual void setDatatypeModifier (JKQTPMathImageDataType __value)
 datatype of the data array data
void setNx (int __value)
 width of the data array data in pt
void setNx (size_t __value)
 width of the data array data in pt
void setNy (int __value)
 height of the data array data in pt
void setNy (size_t __value)
 height of the data array data in pt
Public Member Functions inherited from JKQTPImageBase
 JKQTPImageBase (double x, double y, double width, double height, JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPImageBase (double x, double y, double width, double height, JKQTPlotter *parent)
 class constructor
 JKQTPImageBase (JKQTBasePlotter *parent=nullptr)
 class constructor
 JKQTPImageBase (JKQTPlotter *parent)
 class constructor
double getHeight () const
 height of image
virtual QColor getKeyLabelColor () const override
 returns the color to be used for the key label
double getWidth () const
 width of image
double getX () const
 x coordinate of lower left corner
virtual bool getXMinMax (double &minx, double &maxx, double &smallestGreaterZero) override
 get the maximum and minimum x-value of the graph
double getY () const
 y coordinate of lower left corner
virtual bool getYMinMax (double &miny, double &maxy, double &smallestGreaterZero) override
 get the maximum and minimum y-value of the graph
Public Member Functions inherited from JKQTPGraph
 JKQTPGraph (JKQTBasePlotter *parent=nullptr)
 class constructor
virtual ~JKQTPGraph ()=default
 default wirtual destructor
virtual bool usesColumn (int column) const
 returns true if the given column is used by the graph
Public Member Functions inherited from JKQTPPlotElement
 JKQTPPlotElement (JKQTBasePlotter *parent=nullptr)
 class constructor
virtual ~JKQTPPlotElement ()=default
 default wirtual destructor
QPointF backTransform (const QPointF &x) const
 tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
QPointF backTransform (double x, double y) const
 tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
double backtransformX (double x) const
 tool routine that backtransforms an x-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in xAxisRef
double backtransformY (double y) const
 tool routine that backtransforms a y-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in yAxisRef
virtual void draw (JKQTPEnhancedPainter &painter)=0
 plots the graph to the plotter object specified as parent
virtual void drawOutside (JKQTPEnhancedPainter &painter, QRect leftSpace, QRect rightSpace, QRect topSpace, QRect bottomSpace)
 plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
QImage generateKeyMarker (QSize size=QSize(16, 16))
 returns an image with a key marker inside
virtual void getOutsideSize (JKQTPEnhancedPainter &painter, int &leftSpace, int &rightSpace, int &topSpace, int &bottomSpace)
 if the graph plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
JKQTBasePlottergetParent ()
 returns the parent painter class
const JKQTBasePlottergetParent () const
 returns the parent painter class
QString getTitle () const
 returns the the title of the plot
const JKQTPCoordinateAxisgetXAxis () const
 returns the actual x-Axis-object from the parent plotter, referenced in xAxisRef
JKQTPCoordinateAxisRef getXAxisRef () const
 indicates which coordinate axis to use for coordinate transforms in x-direction
const JKQTPCoordinateAxisgetYAxis () const
 returns the actual y-Axis-object from the parent plotter, referenced in yAxisRef
JKQTPCoordinateAxisRef getYAxisRef () const
 indicates which coordinate axis to use for coordinate transforms in y-direction
virtual double hitTest (const QPointF &posSystem, QPointF *closestSpotSystem=nullptr, QString *label=nullptr, HitTestMode mode=HitTestXY) const
 returns the closest distance of the plot element to the (screen pixel) position pos, or NAN
bool isHighlighted () const
 returns whether the graph is shown in a highlighted style in the plot
bool isVisible () const
 returns whether the graph is visible in the plot
void setAxes (JKQTPCoordinateAxisRef ref)
 set the coordinate axes to use for this plot element
virtual void setParent (JKQTBasePlotter *parent)
 sets the parent painter class
virtual void setParent (JKQTPlotter *parent)
 sets the parent painter class
void setXAxis (JKQTPCoordinateAxisRef ref)
 indicates which coordinate axis to use for coordinate transforms in x-direction
void setYAxis (JKQTPCoordinateAxisRef ref)
 indicates which coordinate axis to use for coordinate transforms in y-direction
QPointF transform (const QPointF &x) const
 tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPolygonF transform (const QPolygonF &x) const
 tool routine that transforms a QPolygonF according to the parent's transformation rules (plot coordinate --> pixels)
QPointF transform (double x, double y) const
 tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPainterPath transformToLinePath (const QPolygonF &x) const
 tool routine that transforms a QPolygonF according to the parent's transformation rules and returns a (non-closed) path consisting of lines (plot coordinate --> pixels)
QVector< double > transformX (const QVector< double > &x) const
 transform all x-coordinates in a vector x
double transformX (double x) const
 tool routine that transforms an x-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in xAxisRef
QVector< double > transformY (const QVector< double > &x) const
 transform all y-coordinates in a vector x
double transformY (double y) const
 tool routine that transforms a y-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in yAxisRef

Protected Member Functions

virtual void ensureImageData ()
 overwrite this to fill the data poiters before they are accessed (e.g. to load data from a column in the datastore
Protected Member Functions inherited from JKQTPImageBase
void plotImage (JKQTPEnhancedPainter &painter, QImage &image, double x, double y, double width, double height)
 plot the given QImage onto the widget where the QImage fills the area defined by x, y (lower left corner) and width, height in the simplest case your implementation of draw() will call plotImage(painter, image, this->x, this->y, this->width, this->height);
Protected Member Functions inherited from JKQTPGraph
virtual void drawErrorsAfter (JKQTPEnhancedPainter &)
 this function is used to plot error inidcators after plotting the graphs.
virtual void drawErrorsBefore (JKQTPEnhancedPainter &)
 this function is used to plot error inidcators before plotting the graphs.
bool getDataMinMax (int column, double &minx, double &maxx, double &smallestGreaterZero)
 get the maximum and minimum value of the given column
Protected Member Functions inherited from JKQTPPlotElement
void addHitTestData (const HitTestLocation &loc)
 clear the internal datastore for hitTest()
void addHitTestData (const QPointF &pos_, const QString &label_)
 clear the internal datastore for hitTest()
void addHitTestData (const QPointF &pos_, int index_, const QString &label_)
 clear the internal datastore for hitTest()
void addHitTestData (const QPointF &pos_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
 clear the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void addHitTestData (double x_, double y_, const QString &label_)
 add a new point on the graph to the internal datastore for hitTest()
void addHitTestData (double x_, double y_, int index_, const QString &label_)
 clear the internal datastore for hitTest()
void addHitTestData (double x_, double y_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
 add a new point on the graph to the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void clearHitTestData ()
 clear the internal datastore for hitTest()
virtual QString formatHitTestDefaultLabel (double x, double y, int index=-1, const JKQTPDatastore *datastore=nullptr) const
 tool-function for hitTest(), which formats a default label, taking into account the x- and y-position (both provided) and optionally the errors of these positions.
void reserveHitTestData (int points)
 reserve list entries for up to points graph points in the internal datastore for hitTest()
QString xFloatToString (double v, int past_comma=-1) const
 converts a x-value v into a string, taking into account the type of x-axis
QString yFloatToString (double v, int past_comma=-1) const
 converts a x-value v into a string, taking into account the type of x-axis

Protected Attributes

const void * data
 points to the data array, holding the image
const void * dataModifier
 points to the data array, holding the modifier image
JKQTPMathImageDataType datatype
 datatype of the data array data
JKQTPMathImageDataType datatypeModifier
 datatype of the data array data
double internalDataMax
 internal storage for maximum of the image value range
double internalDataMin
 internal storage for minimum of the image value range
double internalModifierMax
 internal storage for maximum of the modifier image value range
double internalModifierMin
 internal storage for minimum of the modifier image value range
int Nx
 width of the data array data in pt
int Ny
 height of the data array data in pt
Protected Attributes inherited from JKQTPImageBase
double height
 height of image
double width
 width of image
double x
 x coordinate of lower left corner
double y
 y coordinate of lower left corner
Protected Attributes inherited from JKQTPPlotElement
QVector< HitTestLocationm_hitTestData
 dataset with graph-points and associated data from the function hitTest()
JKQTBasePlotterparent
 the plotter object this object belongs to
int parentPlotStyle
 internal storage for the used parent plot style

Additional Inherited Members

Public Types inherited from JKQTPPlotElement
enum  HitTestMode {
  HitTestXY ,
  HitTestXOnly ,
  HitTestYOnly
}
 modes of operation for the function hitTest() More...
Public Slots inherited from JKQTPImageBase
void setHeight (double __value)
 height of image
void setWidth (double __value)
 width of image
void setX (double __value)
 x coordinate of lower left corner
void setY (double __value)
 y coordinate of lower left corner
Public Slots inherited from JKQTPPlotElement
void setHighlighted (bool __value)
 sets whether the graph is drawn in a highlighted style in the plot
virtual void setTitle (const QString &__value)
 sets the title of the plot (for display in key!).
void setVisible (bool __value)
 sets whether the graph is visible in the plot
Properties inherited from JKQTPPlotElement
bool highlighted
 indicates whether the graph is shown in a "highlghted" in the plot
QString title
 title of the plot (for display in key!). If no title is supplied, no key entry is drawn.
bool visible
 indicates whether the graph is visible in the plot
JKQTPCoordinateAxisRef xAxisRef
 indicates which coordinate axis to use for coordinate transforms in x-direction
JKQTPCoordinateAxisRef yAxisRef
 indicates which coordinate axis to use for coordinate transforms in y-direction

Detailed Description

base class to hold an image from an 2-dimensional array of values

Constructor & Destructor Documentation

◆ JKQTPMathImageBase() [1/6]

JKQTPMathImageBase::JKQTPMathImageBase ( JKQTBasePlotter * parent = nullptr)

class constructor

Parameters
parentparent plotter object

◆ JKQTPMathImageBase() [2/6]

JKQTPMathImageBase::JKQTPMathImageBase ( double x,
double y,
double width,
double height,
JKQTBasePlotter * parent = nullptr )

class constructor

Parameters
xorigin of the image (x-direction) in system coordinates
yorigin of the image (y-direction) in system coordinates
widthwidth of the image in system coordinates
heightheight of the image in system coordinates
parentparent plotter object

◆ JKQTPMathImageBase() [3/6]

JKQTPMathImageBase::JKQTPMathImageBase ( double x,
double y,
double width,
double height,
JKQTPMathImageDataType datatype,
const void * data,
int Nx,
int Ny,
JKQTBasePlotter * parent = nullptr )

class constructor

Parameters
xorigin of the image (x-direction) in system coordinates
yorigin of the image (y-direction) in system coordinates
widthwidth of the image in system coordinates
heightheight of the image in system coordinates
datatypedatatype of the image given in data
datapoints to an image to be plotted (of size Nx * Ny )
Nxwidth (in number of pixels) of data
Nyheight (in number of pixels) of data
parentparent plotter object

◆ JKQTPMathImageBase() [4/6]

JKQTPMathImageBase::JKQTPMathImageBase ( JKQTPlotter * parent)

class constructor

Parameters
parentparent plotter object

◆ JKQTPMathImageBase() [5/6]

JKQTPMathImageBase::JKQTPMathImageBase ( double x,
double y,
double width,
double height,
JKQTPlotter * parent = nullptr )

class constructor

Parameters
xorigin of the image (x-direction) in system coordinates
yorigin of the image (y-direction) in system coordinates
widthwidth of the image in system coordinates
heightheight of the image in system coordinates
parentparent plotter object

◆ JKQTPMathImageBase() [6/6]

JKQTPMathImageBase::JKQTPMathImageBase ( double x,
double y,
double width,
double height,
JKQTPMathImageDataType datatype,
const void * data,
int Nx,
int Ny,
JKQTPlotter * parent )

class constructor

Parameters
xorigin of the image (x-direction) in system coordinates
yorigin of the image (y-direction) in system coordinates
widthwidth of the image in system coordinates
heightheight of the image in system coordinates
datatypedatatype of the image given in data
datapoints to an image to be plotted (of size Nx * Ny )
Nxwidth (in number of pixels) of data
Nyheight (in number of pixels) of data
parentparent plotter object

Member Function Documentation

◆ drawKeyMarker()

virtual void JKQTPMathImageBase::drawKeyMarker ( JKQTPEnhancedPainter & painter,
const QRectF & rect )
overridevirtual

plots a key marker inside the specified rectangle rect

Reimplemented from JKQTPImageBase.

Reimplemented in JKQTPMathImage, and JKQTPRGBMathImage.

◆ ensureImageData()

virtual void JKQTPMathImageBase::ensureImageData ( )
protectedvirtual

overwrite this to fill the data poiters before they are accessed (e.g. to load data from a column in the datastore

Reimplemented in JKQTPColumnContourPlot, JKQTPColumnMathImage, and JKQTPColumnRGBMathImage.

◆ getData()

virtual const void * JKQTPMathImageBase::getData ( ) const
virtual

points to the data array, holding the image

◆ getDataAsDoubleVector()

QVector< double > JKQTPMathImageBase::getDataAsDoubleVector ( ) const

returns the contents of the internal data image as a QVector<double>

◆ getDataMinMax()

virtual void JKQTPMathImageBase::getDataMinMax ( double & imin,
double & imax )
virtual

determine min/max data value of the image

Reimplemented in JKQTPMathImage, and JKQTPRGBMathImage.

◆ getDataModifier()

virtual const void * JKQTPMathImageBase::getDataModifier ( ) const
virtual

points to the data array, holding the modifier image

◆ getDataModifierAsDoubleVector()

QVector< double > JKQTPMathImageBase::getDataModifierAsDoubleVector ( ) const

returns the contents of the internal modifier image as a QVector<double>

◆ getDatatype()

virtual JKQTPMathImageDataType JKQTPMathImageBase::getDatatype ( ) const
virtual

datatype of the data array data

◆ getDatatypeModifier()

virtual JKQTPMathImageDataType JKQTPMathImageBase::getDatatypeModifier ( ) const
virtual

datatype of the data array data

◆ getModifierMinMax()

virtual void JKQTPMathImageBase::getModifierMinMax ( double & imin,
double & imax )
virtual

determine min/max data value of the image

Reimplemented in JKQTPContourPlot, and JKQTPMathImage.

◆ getNx()

int JKQTPMathImageBase::getNx ( ) const

width of the data array data in pt

◆ getNy()

int JKQTPMathImageBase::getNy ( ) const

height of the data array data in pt

◆ setData() [1/3]

virtual void JKQTPMathImageBase::setData ( const void * __value)
virtual

points to the data array, holding the image

Reimplemented in JKQTPColumnRGBMathImage, and JKQTPRGBMathImage.

◆ setData() [2/3]

virtual void JKQTPMathImageBase::setData ( const void * data,
int Nx,
int Ny )
virtual

sets data ( points to the data array, holding the image ), as well as the size of data (Nx: width of the data array data in pt and Ny: height of the data array data in pt )

Reimplemented in JKQTPColumnRGBMathImage, and JKQTPRGBMathImage.

◆ setData() [3/3]

virtual void JKQTPMathImageBase::setData ( const void * data,
int Nx,
int Ny,
JKQTPMathImageDataType datatype )
virtual

sets data ( points to the data array, holding the image ) and datatype ( datatype of the data array data ), as well as the size of data (Nx: width of the data array data in pt and Ny: height of the data array data in pt )

Reimplemented in JKQTPColumnRGBMathImage, and JKQTPRGBMathImage.

◆ setDataModifier() [1/2]

virtual void JKQTPMathImageBase::setDataModifier ( const void * __value)
virtual

points to the data array, holding the modifier image

◆ setDataModifier() [2/2]

virtual void JKQTPMathImageBase::setDataModifier ( const void * data,
JKQTPMathImageDataType datatype )
virtual

sets dataModifier ( points to the data array, holding the modifier image ) and datatypeModifier ( datatype of the data array data )

◆ setDatatype()

virtual void JKQTPMathImageBase::setDatatype ( JKQTPMathImageDataType __value)
virtual

datatype of the data array data

◆ setDatatypeModifier()

virtual void JKQTPMathImageBase::setDatatypeModifier ( JKQTPMathImageDataType __value)
virtual

datatype of the data array data

◆ setNx() [1/2]

void JKQTPMathImageBase::setNx ( int __value)

width of the data array data in pt

◆ setNx() [2/2]

void JKQTPMathImageBase::setNx ( size_t __value)

width of the data array data in pt

◆ setNy() [1/2]

void JKQTPMathImageBase::setNy ( int __value)

height of the data array data in pt

◆ setNy() [2/2]

void JKQTPMathImageBase::setNy ( size_t __value)

height of the data array data in pt

Member Data Documentation

◆ data

const void* JKQTPMathImageBase::data
protected

points to the data array, holding the image

◆ dataModifier

const void* JKQTPMathImageBase::dataModifier
protected

points to the data array, holding the modifier image

◆ datatype

JKQTPMathImageDataType JKQTPMathImageBase::datatype
protected

datatype of the data array data

◆ datatypeModifier

JKQTPMathImageDataType JKQTPMathImageBase::datatypeModifier
protected

datatype of the data array data

◆ internalDataMax

double JKQTPMathImageBase::internalDataMax
protected

internal storage for maximum of the image value range

This is set e.g. when calling drawImage() or draw()

◆ internalDataMin

double JKQTPMathImageBase::internalDataMin
protected

internal storage for minimum of the image value range

This is set e.g. when calling drawImage() or draw()

◆ internalModifierMax

double JKQTPMathImageBase::internalModifierMax
protected

internal storage for maximum of the modifier image value range

This is set e.g. when calling modifyImage() or draw()

◆ internalModifierMin

double JKQTPMathImageBase::internalModifierMin
protected

internal storage for minimum of the modifier image value range

This is set e.g. when calling modifyImage() or draw()

◆ Nx

int JKQTPMathImageBase::Nx
protected

width of the data array data in pt

◆ Ny

int JKQTPMathImageBase::Ny
protected

height of the data array data in pt


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