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/*=========================================================================
Program: Visualization Toolkit
Module: vtkXYPlotWidget.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkXYPlotWidget - 2D widget for manipulating a XY plot
// .SECTION Description
// This class provides support for interactively manipulating the position,
// size, and orientation of a XY Plot. It listens to Left mouse events and
// mouse movement. It will change the cursor shape based on its location. If
// the cursor is over an edge of thea XY plot it will change the cursor shape
// to a resize edge shape. If the position of a XY plot is moved to be close to
// the center of one of the four edges of the viewport, then the XY plot will
// change its orientation to align with that edge. This orientation is sticky
// in that it will stay that orientation until the position is moved close to
// another edge.
// .SECTION See Also
// vtkInteractorObserver
#ifndef __vtkXYPlotWidget_h
#define __vtkXYPlotWidget_h
#include "vtkInteractorObserver.h"
class vtkXYPlotActor;
class VTK_WIDGETS_EXPORT vtkXYPlotWidget : public vtkInteractorObserver
{
public:
static vtkXYPlotWidget *New();
vtkTypeMacro(vtkXYPlotWidget,vtkInteractorObserver);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Get the XY plot used by this Widget. One is created automatically.
virtual void SetXYPlotActor(vtkXYPlotActor *);
vtkGetObjectMacro(XYPlotActor,vtkXYPlotActor);
// Description:
// Methods for turning the interactor observer on and off.
virtual void SetEnabled(int);
protected:
vtkXYPlotWidget();
~vtkXYPlotWidget();
// the actor that is used
vtkXYPlotActor *XYPlotActor;
//handles the events
static void ProcessEvents(vtkObject* object,
unsigned long event,
void* clientdata,
void* calldata);
// ProcessEvents() dispatches to these methods.
void OnLeftButtonDown();
void OnLeftButtonUp();
void OnMouseMove();
// used to compute relative movements
float StartPosition[2];
//BTX - manage the state of the widget
int State;
enum WidgetState
{
Moving=0,
AdjustingP1,
AdjustingP2,
AdjustingP3,
AdjustingP4,
AdjustingE1,
AdjustingE2,
AdjustingE3,
AdjustingE4,
Inside,
Outside
};
//ETX
// use to determine what state the mouse is over, edge1 p1, etc.
// returns a state from the WidgetState enum above
int ComputeStateBasedOnPosition(int X, int Y, int *pos1, int *pos2);
// set the cursor to the correct shape based on State argument
void SetCursor(int State);
private:
vtkXYPlotWidget(const vtkXYPlotWidget&); //Not implemented
void operator=(const vtkXYPlotWidget&); //Not implemented
};
#endif