rnr::WinCvMouse Class Reference

Window OpenCV Mouse base class. More...

#include <WinCvMouse.h>

Public Member Functions
	WinCvMouse ()
	Default contructor.
virtual	~WinCvMouse ()
	Destructor.
void	bind (Win *pWin)
	Bind the mouse to the given window. More...
void	unbind ()
	Unbind the mouse instance from the currently bound window.
int	getCurrentEvent ()
	Get the current mouse event. More...
void	setCurrentEvent (int nEvent)
	Set the current mouse event. More...
void	enableMouseDrag ()
	Enable mouse drag operations.
void	disableMouseDrag ()
	Disable mouse drag operations.
CvPoint	getMousePoint ()
	Get the most recently recorded mouse position. More...

Static Protected Member Functions
static void	onMouse (int event, int x, int y, int flags, void *param)
	Mouse event callback handler. More...

Protected Attributes
Win *	m_pWin
	mouse actions are bound to this windo
int	m_nCurrentEvent
	current (user) menu event
CvPoint	m_ptMouse
	mouse point
bool	m_bDrag
	enable mouse drag operation
bool	m_bDragState
	[not] within drag operation

Detailed Description

Window OpenCV Mouse base class.

This class supports mouse operations on an OpenCV widget region of the window.

Definition at line 81 of file WinCvMouse.h.

Member Function Documentation

void WinCvMouse::bind

(

Win *

pWin

)

Bind the mouse to the given window.

Any previously bound mouse instance is unbound. This mouse state is reset.

Parameters

pWin	Pointer to binding window.

Definition at line 103 of file WinCvMouse.cxx.

References rnr::nopoint(), and rnr::UIEventNone.

{
  if( m_pWin != NULL )
  {
    unbind();
  }

  m_pWin          = pWin;
  m_nCurrentEvent = UIEventNone;
  m_ptMouse       = nopoint;
  m_bDrag         = false;
  m_bDragState    = false;

  m_pWin->registerCvImageMouseCallback(WinCvMouse::onMouse, this);
}

int rnr::WinCvMouse::getCurrentEvent ( )

inline

Get the current mouse event.

Returns

Current event.

Definition at line 114 of file WinCvMouse.h.

References m_nCurrentEvent.

    {
      return m_nCurrentEvent;
    }

CvPoint rnr::WinCvMouse::getMousePoint ( )

inline

Get the most recently recorded mouse position.

Returns

Mouse point in screen coordinates.

Definition at line 152 of file WinCvMouse.h.

References m_ptMouse.

    {
      return m_ptMouse;
    }

void WinCvMouse::onMouse ( int  event, int  x, int  y, int  flags, void *  param  )

staticprotected

Mouse event callback handler.

Parameters

event	Mouse event.
x	Window mouse x coordinate. A value of -1 indicates out-of-region event.
y	Window mouse y coordinate. A value of -1 indicates out-of-region event.
flags	Extra flags
param	Application specific parameter (this).

Definition at line 129 of file WinCvMouse.cxx.

References m_bDrag, m_bDragState, m_nCurrentEvent, m_ptMouse, rnr::UIEventClick, rnr::UIEventDragEnd, rnr::UIEventDragging, rnr::UIEventDragStart, and rnr::UIEventNone.

{
  WinCvMouse *pMouse = (WinCvMouse *)param;

  pMouse->m_nCurrentEvent = UIEventNone;

  // drag the mouse events enabled
  switch( event )
  {
    case CV_EVENT_MOUSEMOVE:
      if( pMouse->m_bDrag && pMouse->m_bDragState )
      {
        pMouse->m_ptMouse.x = x;
        pMouse->m_ptMouse.y = y;
        pMouse->m_nCurrentEvent = UIEventDragging;
      }
      break;

    case CV_EVENT_LBUTTONUP:
      if( pMouse->m_bDrag )
      {
        pMouse->m_ptMouse.x = x;
        pMouse->m_ptMouse.y = y;
        pMouse->m_bDragState = false;
        pMouse->m_nCurrentEvent = UIEventDragEnd;
      }
      break;

    case CV_EVENT_LBUTTONDOWN:
      pMouse->m_ptMouse.x = x;
      pMouse->m_ptMouse.y = y;

      if( pMouse->m_bDrag )
      {
        pMouse->m_bDragState = true;
        pMouse->m_nCurrentEvent = UIEventDragStart;
      }
      else
      {
        pMouse->m_nCurrentEvent = UIEventClick;
      }
      break;

    default:
      break;
  }
}

void rnr::WinCvMouse::setCurrentEvent ( int  nEvent )

inline

Set the current mouse event.

Parameters

nEvent

Event unique identifier.

Definition at line 124 of file WinCvMouse.h.

References m_nCurrentEvent.

    {
      m_nCurrentEvent = nEvent;
    }

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

• include/rnr/appkit/WinCvMouse.h
• sw/librnr_win/WinCvMouse.cxx