pqTransferFunctionWidget.h

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/*=========================================================================

   Program: ParaView
   Module:    $RCSfile$

   Copyright (c) 2005,2006 Sandia Corporation, Kitware Inc.
   All rights reserved.

   ParaView is a free software; you can redistribute it and/or modify it
   under the terms of the ParaView license version 1.2.

   See License_v1.2.txt for the full ParaView license.
   A copy of this license can be obtained by contacting
   Kitware Inc.
   28 Corporate Drive
   Clifton Park, NY 12065
   USA

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

========================================================================*/
#ifndef pqTransferFunctionWidget_h
#define pqTransferFunctionWidget_h

#include "pqComponentsModule.h"
#include "vtkType.h"
#include <QWidget>

class vtkScalarsToColors;
class vtkPiecewiseFunction;
class vtkTable;

class PQCOMPONENTS_EXPORT pqTransferFunctionWidget : public QWidget
{
  Q_OBJECT
  typedef QWidget Superclass;

public:
  pqTransferFunctionWidget(QWidget* parent = 0);
  ~pqTransferFunctionWidget() override;

  void initialize(
    vtkScalarsToColors* stc, bool stc_editable, vtkPiecewiseFunction* pwf, bool pwf_editable);

  vtkIdType currentPoint() const;

  vtkIdType numberOfControlPoints() const;


  void SetLogScaleXAxis(bool logScale);
  bool GetLogScaleXAxis() const;


  vtkScalarsToColors* scalarsToColors() const;
  vtkPiecewiseFunction* piecewiseFunction() const;


  void SetControlPointsFreehandDrawing(bool use);
  bool GetControlPointsFreehandDrawing() const;

public Q_SLOTS:
  void setCurrentPoint(vtkIdType index);

  void setCurrentPointPosition(double xpos);

  void render();

  void setHistogramTable(vtkTable* table);

Q_SIGNALS:
  void currentPointChanged(vtkIdType index);

  void controlPointsModified();

  void chartRangeModified();

  void rangeHandlesRangeChanged(double rangeMin, double rangeMax);

  void rangeHandlesDoubleClicked();

protected Q_SLOTS:
  void onCurrentChangedEvent();

  void onRangeHandlesRangeChanged();

  void showUsageStatus();

protected:
  void onCurrentPointEditEvent();

private:
  Q_DISABLE_COPY(pqTransferFunctionWidget)

  class pqInternals;
  pqInternals* Internals;
};

#endif