QRootCanvas Class Reference

A ROOT canvas embedded in a Qt application. More...

Inheritance diagram for QRootCanvas:

Collaboration diagram for QRootCanvas:

Public Member Functions
	QRootCanvas (FitManager *pFitMgr, QWidget *parent=nullptr)
	Constructor. More...
virtual	~QRootCanvas ()
	Destructor.
TCanvas *	getCanvas ()
	Return a pointer to the ROOT canvas. More...
void	drawHit (const ddastoys::DDASFitHit &hit)
	Draw hit data on the canvas. More...
void	clear ()
	Clear and update the ROOT canvas.

Protected Member Functions
virtual void	mouseMoveEvent (QMouseEvent *e)
	Handle Qt mouse move events on the ROOT canvas. More...
virtual void	mousePressEvent (QMouseEvent *e)
	Handle Qt mouse press events on the ROOT canvas. More...
virtual void	mouseReleaseEvent (QMouseEvent *e)
	Handle Qt mouse release events on the ROOT canvas. More...
virtual void	paintEvent (QPaintEvent *)
	Handle resize events in ROOT.
virtual void	resizeEvent (QResizeEvent *)
	Handle paint events in ROOT.

Detailed Description

A ROOT canvas embedded in a Qt application.

Embedded ROOT canvas in a Qt application. Overrides Qt event handling for resize and paint events (e.g. re-draw after the canvas is hidden behind another window) as well as mouse events. This allows us to manipulate the ROOT canvas as expected: zooming on axes, right click actions, etc. Drawing on the canvas is bog-standard ROOT.

Constructor & Destructor Documentation

QRootCanvas()

QRootCanvas::QRootCanvas	(	FitManager *	pFitMgr,
		QWidget *	parent = nullptr
	)

Constructor.

Parameters

pFitMgr	Pointer to a FitManager for plotting fit data. The FitManager object is handled by the caller.
parent	Pointer to QWidget parent object (optional, default=nullptr).

Construct a QWidget and register it with the ROOT graphics backend. The canvas does not own the FitManager object.

Member Function Documentation

drawHit()

void QRootCanvas::drawHit

(

const ddastoys::DDASFitHit &

hit

)

Draw hit data on the canvas.

Parameters

hit	References the hit we're plotting data from

getCanvas()

TCanvas* QRootCanvas::getCanvas ( )

inline

Return a pointer to the ROOT canvas.

Returns

Pointer to the ROOT canvas object.

mouseMoveEvent()

void QRootCanvas::mouseMoveEvent ( QMouseEvent *  e )

protectedvirtual

Handle Qt mouse move events on the ROOT canvas.

Parameters

e	Pointer to the QMouseEvent to handle

mousePressEvent()

void QRootCanvas::mousePressEvent ( QMouseEvent *  e )

protectedvirtual

Handle Qt mouse press events on the ROOT canvas.

Parameters

e	Pointer to the QMouseEvent to handle

mouseReleaseEvent()

void QRootCanvas::mouseReleaseEvent ( QMouseEvent *  e )

protectedvirtual

Handle Qt mouse release events on the ROOT canvas.

Parameters

e	Pointer to the QMouseEvent to handle

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

• QRootCanvas.h
• QRootCanvas.cpp