SciDAVis  1.D4
Signals | Public Member Functions | Protected Member Functions | Private Attributes
LineProfileTool Class Reference

Plot tool for calculating intensity profiles of image markers along a line. More...

#include <LineProfileTool.h>

Inheritance diagram for LineProfileTool:
PlotToolInterface

List of all members.

Signals

void createTablePlot (const QString &, const QString &, QList< Column * >)
void statusText (const QString &)

Public Member Functions

void calculateLineProfile (const QPoint &start, const QPoint &end)
 LineProfileTool (Graph *graph, int average_pixels)
 Standard constructor.
virtual RTTI rtti () const
- Public Member Functions inherited from PlotToolInterface
 PlotToolInterface (Graph *graph)
virtual ~PlotToolInterface ()

Protected Member Functions

void addLineMarker (const QPoint &start, const QPoint &end)
int averageImagePixel (const QImage &image, int px, int py, bool moreHorizontal)
virtual void mouseMoveEvent (QMouseEvent *e)
 Mouse movements need to be monitored for updating the line during operation.
virtual void mousePressEvent (QMouseEvent *e)
 Pressing the left mouse button starts line selection.
virtual void mouseReleaseEvent (QMouseEvent *e)
 Mouse releases end line selection and cause the profile to be displayed.
virtual void paintEvent (QPaintEvent *e)
 Draw line during operation (replaced by a LineMarker at the end).

Private Attributes

int d_average_pixels
 Number of image pixels over which to average.
QPoint d_op_dp
 Difference between current and start position during operation.
QPoint d_op_start
 Mouse position where an operation started.
ImageMarker * d_target
 The image marker to operate on.

Additional Inherited Members

- Public Types inherited from PlotToolInterface
enum  RTTI {
  DataPicker, ScreenPicker, LineProfile, MultiPeak,
  RangeSelector, TranslateCurve
}
- Protected Attributes inherited from PlotToolInterface
Graph * d_graph

Detailed Description

Plot tool for calculating intensity profiles of image markers along a line.

It is assumed that on the parent Graph an ImageMarker is selected. During initialization, a pointer to this marker is stored and the selection is removed. The LineProfileTool adds itself as a full-sized child widget to the Graph's canvas, allowing for fast redraws while selection of the line is in progress. Once the line is selected (mouse button is released), the profile is calculate and displayed, a new LineMarker denoting the selected profile line is added to the Graph and the LineProfileTool deletes itself by setting the Graph's active tool to NULL.

Future Plans

Actually, image analysis doesn't fit terribly well into the Graph framework. A cleaner approach would be to add a new MyWidget subclass (Image?) that operates on a single image, providing things like line profiles, intensity tables and measuring points on scanned graphs (simple g3data-like functionality). There could be facilities for making an Image from an ImageMarker and vice versa (if that's really needed). [ postponed until after the redesign of project handling ]

Constructor & Destructor Documentation

LineProfileTool::LineProfileTool ( Graph *  graph,
int  average_pixels 
)

Standard constructor.

References d_average_pixels, PlotToolInterface::d_graph, d_op_dp, d_op_start, d_target, Graph::deselectMarker(), and Graph::selectedMarkerPtr().

Member Function Documentation

void LineProfileTool::addLineMarker ( const QPoint &  start,
const QPoint &  end 
)
protected

References Graph::addArrow(), PlotToolInterface::d_graph, ArrowMarker::drawEndArrow(), ArrowMarker::drawStartArrow(), Graph::plotWidget(), Graph::replot(), ArrowMarker::setColor(), ArrowMarker::setEndPoint(), ArrowMarker::setStartPoint(), ArrowMarker::setStyle(), and ArrowMarker::setWidth().

Referenced by mouseReleaseEvent().

int LineProfileTool::averageImagePixel ( const QImage &  image,
int  px,
int  py,
bool  moreHorizontal 
)
protected

References d_average_pixels.

Referenced by calculateLineProfile().

void LineProfileTool::calculateLineProfile ( const QPoint &  start,
const QPoint &  end 
)

References averageImagePixel(), createTablePlot(), PlotToolInterface::d_graph, d_target, SciDAVis::Numeric, ImageMarker::origin(), ImageMarker::pixmap(), ImageMarker::rect(), Column::setPlotDesignation(), Column::setValueAt(), sgn, ImageMarker::size(), SciDAVis::X, and SciDAVis::Y.

Referenced by mouseReleaseEvent().

void LineProfileTool::createTablePlot ( const QString &  ,
const QString &  ,
QList< Column * >   
)
signal

Referenced by calculateLineProfile().

void LineProfileTool::mouseMoveEvent ( QMouseEvent *  e)
protectedvirtual

Mouse movements need to be monitored for updating the line during operation.

References d_op_dp, and d_op_start.

void LineProfileTool::mousePressEvent ( QMouseEvent *  e)
protectedvirtual

Pressing the left mouse button starts line selection.

Clicks with anything else than the left button are propagated to the parent as usual.

References d_op_start.

void LineProfileTool::mouseReleaseEvent ( QMouseEvent *  e)
protectedvirtual

Mouse releases end line selection and cause the profile to be displayed.

References addLineMarker(), calculateLineProfile(), PlotToolInterface::d_graph, d_op_start, and Graph::setActiveTool().

void LineProfileTool::paintEvent ( QPaintEvent *  e)
protectedvirtual

Draw line during operation (replaced by a LineMarker at the end).

References d_op_dp, and d_op_start.

virtual RTTI LineProfileTool::rtti ( ) const
inlinevirtual

Implements PlotToolInterface.

References PlotToolInterface::LineProfile.

void LineProfileTool::statusText ( const QString &  )
signal

Emitted whenever a new message should be presented to the user.

You don't have to connect to this signal if you alreay specified a reciever during initialization.

Member Data Documentation

int LineProfileTool::d_average_pixels
private

Number of image pixels over which to average.

Referenced by averageImagePixel(), and LineProfileTool().

QPoint LineProfileTool::d_op_dp
private

Difference between current and start position during operation.

Referenced by LineProfileTool(), mouseMoveEvent(), and paintEvent().

QPoint LineProfileTool::d_op_start
private

Mouse position where an operation started.

Referenced by LineProfileTool(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), and paintEvent().

ImageMarker* LineProfileTool::d_target
private

The image marker to operate on.

Referenced by calculateLineProfile(), and LineProfileTool().

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