DdtGraphicsView Class Reference

#include <ddtImageWidget.hpp>

Inheritance diagram for DdtGraphicsView:

Signals
void	CursorPosition (double x, double y, bool mouse_clicked)
void	GraphicalElement (double x1, double y1, double x2, double y2, QString drawMode)
void	GraphicalTextElement (double x1, double y1, double x2, double y2, QString drawMode, QString text)
void	StatisticRectangle (double x1, double y1, double x2, double y2)
void	SlitElement (double target_x, double target_y, double slit_x, double slit_y, double x_offset, double y_offset)
void	CalculateHistogramReferenceLine (const QPointF p1, const QPointF p2)
void	MouseDecrementScale ()
void	MouseIncrementScale ()

Public Member Functions
	DdtGraphicsView (QWidget *parent=nullptr)
void	SetConvertPixelToDegrees (const double convPixelDegrees)
void	SetDrawMode (const QString mode)
void	SetDrawSlitLine (const bool drawLine)
void	SetStatisticRect (const double x1, const double y1, const double x2, const double y2)
void	AddStatisticRectToScene ()
void	AddSlitElementToScene ()
void	AddReferenceLineElementToScene ()
void	UpdateAllStatistics ()

Protected Member Functions
void	mouseMoveEvent (QMouseEvent *event)
void	mousePressEvent (QMouseEvent *event)
void	mouseReleaseEvent (QMouseEvent *event)
void	mouseDoubleClickEvent (QMouseEvent *event)
void	keyPressEvent (QKeyEvent *event)
void	wheelEvent (QWheelEvent *event)
void	drawForeground (QPainter *painter, const QRectF &rect)
void	AddTextItem ()

Detailed Description

Class to serve as graphic view inside the image widget, derived from the QGraphicsView. The mouse events (move, press) are overwritten.

Constructor & Destructor Documentation

DdtGraphicsView()

DdtGraphicsView::DdtGraphicsView ( QWidget *  parent = nullptr )

explicit

Constructor

Parameters

parent

Pointer to the parent widget

Member Function Documentation

AddReferenceLineElementToScene()

void DdtGraphicsView::AddReferenceLineElementToScene

(

)

Re-add the reference line element to the scene for the case it was removed by a refresh procedure

AddSlitElementToScene()

void DdtGraphicsView::AddSlitElementToScene

(

)

Re-add the slit element to the scene, for the case it was removed by a refresh procedure

AddStatisticRectToScene()

void DdtGraphicsView::AddStatisticRectToScene

(

)

Re-add the statistic rectangle to the scene, for the case it was removed by a refresh procedure

AddTextItem()

void DdtGraphicsView::AddTextItem ( )

protected

Re-add the textItem for text input (necessary in case of a running data stream input)

CalculateHistogramReferenceLine

void DdtGraphicsView::CalculateHistogramReferenceLine ( const QPointF  p1, const QPointF  p2  )

signal

Signal send when a reference line was drawn

CursorPosition

void DdtGraphicsView::CursorPosition ( double  x, double  y, bool  mouse_clicked  )

signal

Signal that is emitted to report the cursor position.

Parameters

x	mouse x cooridnate
y	mouse y coordinate
mouse_clicked	flag, if mouse button was clicked

drawForeground()

void DdtGraphicsView::drawForeground ( QPainter *  painter, const QRectF &  rect  )

protected

Draw the foreground layer. This is automatically called when the view is updated.

Parameters

painter	the painter to use for drawing
rect	the exposed rectangle

GraphicalElement

void DdtGraphicsView::GraphicalElement ( double  x1, double  y1, double  x2, double  y2, QString  drawMode  )

signal

Signal that is emitted to report a graphical element's dimensions and type.

Parameters

x1	mouse x coordinate of first position
y1	mouse y coordinate of first position
x2	mouse x coordinate of first position
y2	mouse y coordinate of first position
drawMode	string identifying the graphical element

GraphicalTextElement

void DdtGraphicsView::GraphicalTextElement ( double  x1, double  y1, double  x2, double  y2, QString  drawMode, QString  text  )

signal

keyPressEvent()

void DdtGraphicsView::keyPressEvent ( QKeyEvent *  event )

protected

Event handler to receive keyboard events

Parameters

event

Key event

MouseDecrementScale

void DdtGraphicsView::MouseDecrementScale ( )

signal

Signal emitted when zooming in by mouse wheel

mouseDoubleClickEvent()

void DdtGraphicsView::mouseDoubleClickEvent ( QMouseEvent *  event )

protected

Event handler to receive mouse press events.

Parameters

event

the mouse press event

MouseIncrementScale

void DdtGraphicsView::MouseIncrementScale ( )

signal

Signal emitted when zooming out by mouse wheel

mouseMoveEvent()

void DdtGraphicsView::mouseMoveEvent ( QMouseEvent *  event )

protected

Event handler to receive mouse move events.

Parameters

event

the mouse move event

mousePressEvent()

void DdtGraphicsView::mousePressEvent ( QMouseEvent *  event )

protected

Event handler to receive mouse press events.

Parameters

event

the mouse press event

mouseReleaseEvent()

void DdtGraphicsView::mouseReleaseEvent ( QMouseEvent *  event )

protected

Event handler to receive mouse release events.

Parameters

event

the mouse press event

SetConvertPixelToDegrees()

void DdtGraphicsView::SetConvertPixelToDegrees

(

const double

convPixelDegrees

)

Set the value for the factor to convert pixel distances to degrees

Parameters

convPixelDegrees

the factor to be used to convert pixel distances to degrees

SetDrawMode()

void DdtGraphicsView::SetDrawMode

(

const QString

mode

)

Sets the current draw mode for graphical elements

Parameters

the	current draw mode

SetDrawSlitLine()

void DdtGraphicsView::SetDrawSlitLine

(

const bool

drawLine

)

Sets the draw slit line flag

Parameters

flag	indicating if the slit line shall be drawn

SetStatisticRect()

void DdtGraphicsView::SetStatisticRect	(	const double	x1,
		const double	y1,
		const double	x2,
		const double	y2
	)

Sets the current draw mode for graphical elements

Parameters

x1	the x coordinate of top left corner
y1	the y coordinate of top left corner
x2	the x coordinate of bottom right corner
y2	the y coordinate of bottom right corner

SlitElement

void DdtGraphicsView::SlitElement ( double  target_x, double  target_y, double  slit_x, double  slit_y, double  x_offset, double  y_offset  )

signal

StatisticRectangle

void DdtGraphicsView::StatisticRectangle ( double  x1, double  y1, double  x2, double  y2  )

signal

UpdateAllStatistics()

void DdtGraphicsView::UpdateAllStatistics

(

)

Update all statistics

wheelEvent()

void DdtGraphicsView::wheelEvent ( QWheelEvent *  event )

protected

Event handler for mouse wheel events.

Parameters

event

the scroll wheel event

---

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

• datavisualisation/widgetsdialogs/src/include/ddt/widgets/ddtImageWidget.hpp
• datavisualisation/widgetsdialogs/src/widgets/ddtImageWidget.cpp