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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRectilinearWipeWidget.cxx
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.
=========================================================================*/
#include "vtkRectilinearWipeWidget.h"
#include "vtkRectilinearWipeRepresentation.h"
#include "vtkCommand.h"
#include "vtkCallbackCommand.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkMath.h"
#include "vtkObjectFactory.h"
#include "vtkWidgetEventTranslator.h"
#include "vtkWidgetCallbackMapper.h"
#include "vtkEvent.h"
#include "vtkWidgetEvent.h"
vtkStandardNewMacro(vtkRectilinearWipeWidget);
//----------------------------------------------------------------------
vtkRectilinearWipeWidget::vtkRectilinearWipeWidget()
{
// Establish the initial widget state
this->WidgetState = vtkRectilinearWipeWidget::Start;
// Define widget events
this->CallbackMapper->SetCallbackMethod(vtkCommand::LeftButtonPressEvent,
vtkWidgetEvent::Select,
this, vtkRectilinearWipeWidget::SelectAction);
this->CallbackMapper->SetCallbackMethod(vtkCommand::LeftButtonReleaseEvent,
vtkWidgetEvent::EndSelect,
this, vtkRectilinearWipeWidget::EndSelectAction);
this->CallbackMapper->SetCallbackMethod(vtkCommand::MouseMoveEvent,
vtkWidgetEvent::Move,
this, vtkRectilinearWipeWidget::MoveAction);
}
//----------------------------------------------------------------------
vtkRectilinearWipeWidget::~vtkRectilinearWipeWidget()
{
}
//-------------------------------------------------------------------------
void vtkRectilinearWipeWidget::SetCursor(int cState)
{
switch (cState)
{
case vtkRectilinearWipeRepresentation::MovingHPane:
this->RequestCursorShape(VTK_CURSOR_SIZENS);
break;
case vtkRectilinearWipeRepresentation::MovingVPane:
this->RequestCursorShape(VTK_CURSOR_SIZEWE);
break;
case vtkRectilinearWipeRepresentation::MovingCenter:
this->RequestCursorShape(VTK_CURSOR_SIZEALL);
break;
default:
this->RequestCursorShape(VTK_CURSOR_DEFAULT);
}
}
//----------------------------------------------------------------------
void vtkRectilinearWipeWidget::SelectAction(vtkAbstractWidget *w)
{
vtkRectilinearWipeWidget *self = reinterpret_cast<vtkRectilinearWipeWidget*>(w);
if ( self->WidgetRep->GetInteractionState() == vtkRectilinearWipeRepresentation::Outside )
{
return;
}
// We are definitely selected
self->WidgetState = vtkRectilinearWipeWidget::Selected;
self->GrabFocus(self->EventCallbackCommand);
// Get the event position
int X = self->Interactor->GetEventPosition()[0];
int Y = self->Interactor->GetEventPosition()[1];
// This is redundant but necessary on some systems (windows) because the
// cursor is switched during OS event processing and reverts to the default
// cursor.
self->SetCursor(self->WidgetRep->GetInteractionState());
// We want to compute an orthogonal vector to the pane that has been selected
double eventPos[2];
eventPos[0] = static_cast<double>(X);
eventPos[1] = static_cast<double>(Y);
self->WidgetRep->StartWidgetInteraction(eventPos);
self->EventCallbackCommand->SetAbortFlag(1);
self->StartInteraction();
self->InvokeEvent(vtkCommand::StartInteractionEvent,NULL);
}
//----------------------------------------------------------------------
void vtkRectilinearWipeWidget::MoveAction(vtkAbstractWidget *w)
{
vtkRectilinearWipeWidget *self = reinterpret_cast<vtkRectilinearWipeWidget*>(w);
// compute some info we need for all cases
int X = self->Interactor->GetEventPosition()[0];
int Y = self->Interactor->GetEventPosition()[1];
// Set the cursor appropriately
if ( self->WidgetState != vtkRectilinearWipeWidget::Selected )
{
self->WidgetRep->ComputeInteractionState(X, Y);
self->SetCursor(self->WidgetRep->GetInteractionState());
return;
}
// Okay, adjust the representation
double newEventPosition[2];
newEventPosition[0] = static_cast<double>(X);
newEventPosition[1] = static_cast<double>(Y);
self->WidgetRep->WidgetInteraction(newEventPosition);
// moving something
self->EventCallbackCommand->SetAbortFlag(1);
self->InvokeEvent(vtkCommand::InteractionEvent,NULL);
self->Render();
}
//----------------------------------------------------------------------
void vtkRectilinearWipeWidget::EndSelectAction(vtkAbstractWidget *w)
{
vtkRectilinearWipeWidget *self = reinterpret_cast<vtkRectilinearWipeWidget*>(w);
if ( self->WidgetState != vtkRectilinearWipeWidget::Selected ||
self->WidgetRep->GetInteractionState() == vtkRectilinearWipeRepresentation::Outside )
{
return;
}
// Return state to not selected
self->WidgetState = vtkRectilinearWipeWidget::Start;
self->ReleaseFocus();
self->EventCallbackCommand->SetAbortFlag(1);
self->EndInteraction();
self->InvokeEvent(vtkCommand::EndInteractionEvent,NULL);
self->WidgetState = vtkRectilinearWipeWidget::Start;
}
//----------------------------------------------------------------------
void vtkRectilinearWipeWidget::CreateDefaultRepresentation()
{
if ( ! this->WidgetRep )
{
this->WidgetRep = vtkRectilinearWipeRepresentation::New();
}
}
//----------------------------------------------------------------------
void vtkRectilinearWipeWidget::PrintSelf(ostream& os, vtkIndent indent)
{
//Superclass typedef defined in vtkTypeMacro() found in vtkSetGet.h
this->Superclass::PrintSelf(os,indent);
}