Multi WorldCanvas event-based zoomer. More...

#include <MWCRTZoomer.h>

Inheritance diagram for casa::MWCRTZoomer:

Public Member Functions
	MWCRTZoomer (Display::KeySym keysym=Display::K_Pointer_Button1)
	Constructor. More...

virtual	~MWCRTZoomer ()
	Destructor. More...

virtual void	unzoom ()
	This function resets the zoom. More...

virtual void	zoom (const casacore::Vector< casacore::Double > &linBlc, const casacore::Vector< casacore::Double > &linTrc)
	This function zooms with a given blc,trc. More...

virtual void	zoomIn (casacore::Double factor=2.)
	zoom in/out by given factor More...

virtual void	zoomOut (casacore::Double factor=2.)

Public Member Functions inherited from casa::MWCRectTool
	MWCRectTool (Display::KeySym keysym=Display::K_Pointer_Button1, const casacore::Bool persistent=false)
	Constructor. More...

virtual	~MWCRectTool ()
	Destructor. More...

virtual void	disable ()
	Switch the tool off - this erases the rectangle, if any, and calls the base class disable. More...

virtual void	reset (casacore::Bool skipRefresh=false)
	reset to non-existent, non-active rectangle. More...

virtual casacore::Bool	rectangleDefined ()
	Is a rectangle currently defined? More...

Public Member Functions inherited from casa::MultiWCTool
	MultiWCTool (const Display::KeySym &keysym=Display::K_Pointer_Button1, bool enable_events=true)
	Constructor taking the primary key to which this tool will respond. More...

virtual	~MultiWCTool ()
	Destructor. More...

virtual void	addWorldCanvas (WorldCanvas &worldcanvas)
	Add/remove a WorldCanvas from the control of this tool. More...

virtual void	removeWorldCanvas (WorldCanvas &worldcanvas)

virtual void	addWorldCanvases (PanelDisplay *pdisp)
	Add/Remove a list of WorldCanvases from PanelDisplay. More...

virtual void	removeWorldCanvases (PanelDisplay *pdisp)

virtual void	enable ()
	Switch the tool on/off - this simply registers or unregisters the event handlers on the WorldCanvases. More...

virtual void	operator() (const WCPositionEvent &ev)
	Required operators for event handling - these are called when events occur, and distribute the events to the "user-level" methods. More...

virtual void	operator() (const WCMotionEvent &ev)
	default sends event to cout More...

virtual void	operator() (const WCRefreshEvent &ev)
	original handler interface (still used for WCRefreshEvents) More...

Public Member Functions inherited from casa::DisplayTool
virtual	~DisplayTool ()
	Destructor. More...

virtual void	setKey (const Display::KeySym &keysym)
	Set/get which key to catch. More...

virtual Display::KeySym	getKey () const

Public Member Functions inherited from casa::WCPositionEH
	WCPositionEH ()
	Default Constructor Required. More...

virtual	~WCPositionEH ()
	Destructor. More...

Public Member Functions inherited from casa::WCMotionEH
	WCMotionEH ()
	Default Constructor Required. More...

virtual	~WCMotionEH ()
	Destructor. More...

Public Member Functions inherited from casa::WCRefreshEH
	WCRefreshEH ()
	Default Constructor Required. More...

virtual	~WCRefreshEH ()
	Destructor. More...

Public Member Functions inherited from casa::DisplayEH
virtual void	handleEvent (DisplayEvent &)
	Classes that contain this interface (i.e., derive from it) can override this method to implement actions for whatever types of DisplayEvent they're interested in. More...

virtual	~DisplayEH ()

Public Member Functions inherited from casa::DTVisible
	DTVisible ()
	Default constructor. More...

virtual	~DTVisible ()
	Destructor. More...

virtual casacore::String	drawColor () const
	Return the color to use. More...

virtual casacore::Int	lineWidth () const
	Return the line width to use. More...

virtual casacore::Double	doubleClickInterval () const
	Return the double click interval (in seconds). More...

Protected Member Functions
virtual void	doubleInside ()
	Handle double-click inside or outside the rectangle; called by the base class when these events occur. More...

virtual void	doubleOutside ()

virtual void	zoomed (const casacore::Vector< casacore::Double > &linBlc, const casacore::Vector< casacore::Double > &linTrc)
	This function is called when a zoom occurs. More...

Protected Member Functions inherited from casa::MWCRectTool
virtual void	keyPressed (const WCPositionEvent &)
	Functions called by the base class event handling operators–and normally only those. More...

virtual void	keyReleased (const WCPositionEvent &)

virtual void	otherKeyPressed (const WCPositionEvent &)

virtual void	moved (const WCMotionEvent &, const viewer::region::region_list_type &)

virtual void	draw (const WCRefreshEvent &, const viewer::region::region_list_type &)
	draw the rectangle (if any) on the object's currently active WC. More...

virtual void	rectangleReady ()
	Called when a rectangle is ready and not being edited. More...

virtual void	get (casacore::Int &x1, casacore::Int &y1, casacore::Int &x2, casacore::Int &y2) const
	Retrieve the rectangle coordinates, in screen pixels. More...

Protected Member Functions inherited from casa::MultiWCTool
virtual void	otherKeyReleased (const WCPositionEvent &)

virtual void	updateRegion ()

virtual void	clicked (casacore::Int, casacore::Int)

virtual void	doubleClicked (casacore::Int, casacore::Int)

virtual void	refresh ()
	Copy back-to-front buffer (erasing all MWCTool drawings), then cause this (and all MWCTools on current WC's PC) to draw (or not draw) themselves, according to their current state. More...

virtual void	setClipToDrawArea ()
	Cause subsequent drawing commands to be clipped to the current WC (or its drawing area). More...

virtual void	setClipToWC ()

virtual void	resetClip ()

Protected Member Functions inherited from casa::DisplayTool
	DisplayTool (const Display::KeySym &keysym=Display::K_Pointer_Button1)
	Constructor taking a key to which this tool will initially be attached, typically one of the pointer buttons. More...

	DisplayTool (const DisplayTool &other)
	Copy constructor - construct a new DisplayTool from `other`, using copy semantics. More...

DisplayTool &	operator= (const DisplayTool &other)
	Copy assignment using copy semantics. More...

Display::KeyModifier	keyModifiers ()
	Return the modifier mask. More...

Protected Member Functions inherited from casa::DTVisible
	DTVisible (const DTVisible &other)
	(Required) copy constructor. More...

DTVisible &	operator= (const DTVisible &other)
	(Required) copy assignment. More...

Private Member Functions
void	getLinearCoords (casacore::Vector< casacore::Double > &blc, casacore::Vector< casacore::Double > &trc)
	get the linear coords of the current zoom box More...

Additional Inherited Members
Protected Attributes inherited from casa::MultiWCTool
WorldCanvas *	itsCurrentWC
	WC being (or to be) drawn on (may be 0 initially). More...

Detailed Description

Multi WorldCanvas event-based zoomer.

Intended use:

Public interface

Review Status

<prerequisites> WCRectTool </prerequisites>

Etymology

MWCRTZoomer stands for WorldCanvas Rectangling Tool Zoomer

Synopsis

This class finalises the functionality in WCRectTool to implement event-based zooming on a WorldCanvas. casacore::Double clicking inside the constructed rectangle results in zooming in; double clicking outside the rectangle gives zooming out.

Example

Motivation

Zooming is an essential tool for interacting with data displays.

To Do

Nothing known

Definition at line 72 of file MWCRTZoomer.h.

Constructor & Destructor Documentation

casa::MWCRTZoomer::MWCRTZoomer ( Display::KeySym keysym = Display::K_Pointer_Button1 )

Constructor.

virtual casa::MWCRTZoomer::~MWCRTZoomer ( )

virtual

Destructor.

Member Function Documentation

virtual void casa::MWCRTZoomer::doubleInside ( )

protectedvirtual

Handle double-click inside or outside the rectangle; called by

the base class when these events occur.

They execute zoom-in/zoom-out on the tool's active WC's (which should all have indentical linear coordinates for their draw areas–they certainly will have, after a zoom). Then the routines invoke the zoomed() callback, below.

Reimplemented from casa::MWCRectTool.

virtual void casa::MWCRTZoomer::doubleOutside ( )

protectedvirtual

Reimplemented from casa::MWCRectTool.

void casa::MWCRTZoomer::getLinearCoords	(	casacore::Vector< casacore::Double > &	blc,
		casacore::Vector< casacore::Double > &	trc
	)

private

get the linear coords of the current zoom box

virtual void casa::MWCRTZoomer::unzoom ( )

virtual

This function resets the zoom.

Referenced by casa::QtDisplayPanel::unzoom().

virtual void casa::MWCRTZoomer::zoom	(	const casacore::Vector< casacore::Double > &	linBlc,
		const casacore::Vector< casacore::Double > &	linTrc
	)

virtual

This function zooms with a given blc,trc.

Referenced by casa::QtDisplayPanel::zoom().

virtual void casa::MWCRTZoomer::zoomed	(	const casacore::Vector< casacore::Double > &	linBlc,
		const casacore::Vector< casacore::Double > &	linTrc
	)

protectedvirtual

This function is called when a zoom occurs.

It is supplied with the linear coords of the new zoom box, and thus can be implemented to do further actions, such as reporting the new zoom box to the application

virtual void casa::MWCRTZoomer::zoomIn ( casacore::Double factor = 2. )

virtual

zoom in/out by given factor

Referenced by casa::QtDisplayPanel::zoomIn().

virtual void casa::MWCRTZoomer::zoomOut ( casacore::Double factor = 2. )

virtual

Referenced by casa::QtDisplayPanel::zoomOut().

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

casa/code/display/DisplayEvents/MWCRTZoomer.h

Public Member Functions

Protected Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Etymology

Synopsis

Example

Motivation

To Do

Constructor & Destructor Documentation

Member Function Documentation