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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class to plot an image from an 2-dimensional array of boolean values: alle true values are plotted in a given color, while the false pixels are drawn in another (default: transparent) More...

#include <jkqtpimageoverlays.h>

Inheritance diagram for JKQTPColumnOverlayImageEnhanced:
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Collaboration diagram for JKQTPColumnOverlayImageEnhanced:
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Public Member Functions

 JKQTPColumnOverlayImageEnhanced (JKQTBasePlotter *parent=nullptr)
 
 JKQTPColumnOverlayImageEnhanced (JKQTPlotter *parent)
 
virtual void draw (JKQTPEnhancedPainter &painter) override
 plots the graph to the plotter object specified as parent
 
int getImageColumn () const
 column to read overlay image from

 
virtual void setImageColumn (int __value)
 column to read overlay image from

 
virtual bool usesColumn (int c) const override
 returns true if the given column is used by the graph
 
- Public Member Functions inherited from JKQTPOverlayImageEnhanced
 JKQTPOverlayImageEnhanced (double x, double y, double width, double height, bool *data, int Nx, int Ny, QColor colTrue, JKQTBasePlotter *parent=nullptr)
 class constructor
 
 JKQTPOverlayImageEnhanced (double x, double y, double width, double height, bool *data, int Nx, int Ny, QColor colTrue, JKQTPlotter *parent)
 class constructor
 
 JKQTPOverlayImageEnhanced (JKQTBasePlotter *parent=nullptr)
 
 JKQTPOverlayImageEnhanced (JKQTPlotter *parent)
 
virtual void drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
 plots a key marker inside the specified rectangle rect
 
OverlayImageEnhancedDrawMode getDrawMode () const
 indicates whether to draw filled rectangles, or symbols
 
JKQTPGraphSymbols getSymbol () const
 which symbol to use for the datapoints
 
QString getSymbolFontName () const
 get the font to be used for character symbols JKQTPCharacterSymbol+QChar('').unicode()
 
double getSymbolLineWidth () const
 width (in pt) of the lines used to plot the symbol for the data points
 
double getSymbolSizeFactor () const
 a rescaling factor for the symbols
 
void setDrawMode (OverlayImageEnhancedDrawMode __value)
 indicates whether to draw filled rectangles, or symbols
 
void setSymbolFontName (const QString &__value)
 set the font to be used for character symbols JKQTPCharacterSymbol+QChar('').unicode()
 
void setSymbolLineWidth (double __value)
 width (in pt) of the lines used to plot the symbol for the data points
 
void setSymbolSizeFactor (double __value)
 a rescaling factor for the symbols
 
void setSymbolType (JKQTPGraphSymbols __value)
 which symbol to use for the datapoints
 
- Public Member Functions inherited from JKQTPOverlayImage
 JKQTPOverlayImage (double x, double y, double width, double height, const bool *data, int Nx, int Ny, QColor colTrue, JKQTBasePlotter *parent=nullptr)
 class constructor
 
 JKQTPOverlayImage (double x, double y, double width, double height, const bool *data, int Nx, int Ny, QColor colTrue, JKQTPlotter *parent)
 class constructor
 
 JKQTPOverlayImage (JKQTBasePlotter *parent=nullptr)
 
 JKQTPOverlayImage (JKQTPlotter *parent)
 
virtual QImage drawImage ()
 return the plotted image only as a QImage

 
const bool * getData () const
 points to the data array, holding the image
 
QVector< double > getDataAsDoubleVector () const
 return the data used for plotting as a QVector<double> in row-major data-ordering
 
QColor getFalseColor () const
 color for false pixels
 
virtual QColor getKeyLabelColor () const override
 returns the color to be used for the key label
 
int getNx () const
 width of the data array data in pt
 
int getNy () const
 height of the data array data in pt
 
QColor getTrueColor () const
 color for true pixels
 
virtual void setData (const bool *__value)
 points to the data array, holding the image
 
virtual void setData (const bool *data, int Nx, int Ny)
 set the plot-data to a given array data with size Nx * Ny in row-major ordering
 
void setFalseColor (const QColor &__value)
 color for false pixels
 
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
 
virtual void setParent (JKQTBasePlotter *parent) override
 sets the parent painter class
 
virtual void setTitle (const QString &title) override
 sets the title of the plot (for display in key!).
 
void setTrueColor (const QColor &__value)
 color for true pixels
 
- 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
 
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
 
- 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 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 (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 Attributes

int imageColumn
 column to read overlay image from

 
- Protected Attributes inherited from JKQTPOverlayImageEnhanced
OverlayImageEnhancedDrawMode drawMode
 indicates whether to draw filled rectangles, or symbols
 
QString m_symbolFontName
 font to be used for character symbols JKQTPCharacterSymbol+QChar('').unicode()
 
JKQTPGraphSymbols symbol
 which symbol to use for the datapoints
 
double symbolLineWidth
 width (in pt) of the lines used to plot the symbol for the data points
 
double symbolSizeFactor
 a rescaling factor for the symbols
 
- Protected Attributes inherited from JKQTPOverlayImage
QAction * actCopyImage
 action that calls copyImagePlotAsImage()
 
QAction * actSaveImage
 action that calls saveImagePlotAsImage()
 
const bool * data
 points to the data array, holding the image
 
QColor falseColor
 color for false pixels
 
int Nx
 width of the data array data in pt
 
int Ny
 height of the data array data in pt
 
QColor trueColor
 color for true pixels
 
- 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 JKQTPOverlayImageEnhanced
enum  OverlayImageEnhancedDrawMode {
  DrawAsRectangles ,
  DrawAsImage ,
  DrawAsSymbols
}
 
- Public Types inherited from JKQTPPlotElement
enum  HitTestMode {
  HitTestXY ,
  HitTestXOnly ,
  HitTestYOnly
}
 modes of operation for the function hitTest() More...
 
- Public Slots inherited from JKQTPOverlayImage
void copyImagePlotAsImage ()
 copy the plotted image as an image into the clipboard
 
void saveImagePlotAsImage (const QString &filename=QString(""), const QByteArray &outputFormat=QByteArray())
 save the plotted image as a file with filename and format outputFormat
 
- 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

 
void setVisible (bool __value)
 sets whether the graph is visible in the plot

 
- 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
 
- 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

class to plot an image from an 2-dimensional array of boolean values: alle true values are plotted in a given color, while the false pixels are drawn in another (default: transparent)

In contrast to JKQTPOverlayImage this class draws ist contents as rectangles, not as semi-transparent image. This may lead to nicer results,but could be slower. Also it is possible to draw other types of markers (cross, circles, ...)

Constructor & Destructor Documentation

◆ JKQTPColumnOverlayImageEnhanced() [1/2]

JKQTPColumnOverlayImageEnhanced::JKQTPColumnOverlayImageEnhanced ( JKQTBasePlotter parent = nullptr)

◆ JKQTPColumnOverlayImageEnhanced() [2/2]

JKQTPColumnOverlayImageEnhanced::JKQTPColumnOverlayImageEnhanced ( JKQTPlotter parent)

Member Function Documentation

◆ draw()

virtual void JKQTPColumnOverlayImageEnhanced::draw ( JKQTPEnhancedPainter painter)
overridevirtual

plots the graph to the plotter object specified as parent

Reimplemented from JKQTPOverlayImageEnhanced.

◆ getImageColumn()

int JKQTPColumnOverlayImageEnhanced::getImageColumn ( ) const

column to read overlay image from

◆ setImageColumn()

virtual void JKQTPColumnOverlayImageEnhanced::setImageColumn ( int  __value)
virtual

column to read overlay image from

◆ usesColumn()

virtual bool JKQTPColumnOverlayImageEnhanced::usesColumn ( int  c) const
overridevirtual

returns true if the given column is used by the graph

This virtual function indicates whether a given column is used by this graph. Override this function in your derived graphs to indicate to JKQTPlotter / JKQTBasePlotter , which columns from the internal JKQTPDatastore are actually used. This information can be used e.g. for graph-specific data-export.

Reimplemented from JKQTPGraph.

Member Data Documentation

◆ imageColumn

int JKQTPColumnOverlayImageEnhanced::imageColumn
protected

column to read overlay image from


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