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

  Library:   CTK

  Copyright (c) Kitware Inc.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0.txt

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

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

// Qt includes
#include <QApplication>
#include <QString>
#include <QTimer>

// CTK includes
#include "ctkRangeSlider.h"

// STD includes
#include <cstdlib>
#include <iostream>

//-----------------------------------------------------------------------------
bool checkSlider(const ctkRangeSlider& slider)
{
  return slider.minimum()  <= slider.minimumValue() &&
    slider.minimumValue() <= slider.maximumValue() &&
    slider.maximumValue() <= slider.maximum();
}

//-----------------------------------------------------------------------------
bool checkSlider(const ctkRangeSlider& slider,
                 int min, int minVal, int maxVal, int max)
{
  return slider.minimum() == min &&
    slider.minimumValue() == minVal &&
    slider.maximumValue() == maxVal &&
    slider.maximum() == max;
}

//-----------------------------------------------------------------------------
int ctkRangeSliderTest1(int argc, char * argv [] )
{
  QApplication app(argc, argv);

  ctkRangeSlider slider;
  if (!checkSlider(slider))
    {
    std::cerr << "ctkRangeSlider:: 1) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setMinimum(40);
  slider.setMaximum(4000);
  slider.setValues(50, 500);
  if (!checkSlider(slider, 40, 50, 500, 4000))
    {
    std::cerr << "ctkRangeSlider:: 2) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setValues(700, 60);
  if (!checkSlider(slider, 40, 60, 700, 4000))
    {
    std::cerr << "ctkRangeSlider:: 3) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setValues(800, 900);
  if (!checkSlider(slider, 40, 800, 900, 4000))
    {
    std::cerr << "ctkRangeSlider:: 4) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setValues(5000, 6000);
  if (!checkSlider(slider, 40, 4000, 4000, 4000))
    {
    std::cerr << "ctkRangeSlider:: 5) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setRange(-15, 40);
  if (!checkSlider(slider, -15, 40, 40, 40))
    {
    std::cerr << "ctkRangeSlider:: 6) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  // nothing happen yet but it would be nice if it moves the 2 values at 
  // the same time.
  slider.triggerAction(QAbstractSlider::SliderSingleStepSub);
  if (!checkSlider(slider, -15, 40, 40, 40))
    {
    std::cerr << "ctkRangeSlider:: 7) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setMaximumValue(30);
  if (!checkSlider(slider, -15, 30, 30, 40))
    {
    std::cerr << "ctkRangeSlider:: 8) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setMinimumValue(40);
  if (!checkSlider(slider, -15, 40, 40, 40))
    {
    std::cerr << "ctkRangeSlider:: 9) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setMinimumValue(-20);
  if (!checkSlider(slider, -15, -15, 40, 40))
    {
    std::cerr << "ctkRangeSlider:: 10) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setTracking(false);
  slider.setPositions(-5, 30);
  if (!checkSlider(slider, -15, -15, 40, 40) ||
      slider.minimumPosition() != -5 || 
      slider.maximumPosition() != 30)
    {
    std::cerr << "ctkRangeSlider:: 10) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    std::cerr << "ctkRangeSlider:: 10) "
              << slider.minimumPosition() << " " 
              << slider.maximumPosition() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setValues(-10, 30);
  if (!checkSlider(slider, -15, -10, 30, 40) ||
      slider.minimumPosition() != -10 || 
      slider.maximumPosition() != 30)
    {
    std::cerr << "ctkRangeSlider:: 11) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    std::cerr << "ctkRangeSlider:: 11) "
              << slider.minimumPosition() << " " 
              << slider.maximumPosition() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setMaximumPosition(20);
  if (!checkSlider(slider, -15, -10, 30, 40) ||
      slider.minimumPosition() != -10 || 
      slider.maximumPosition() != 20)
    {
    std::cerr << "ctkRangeSlider:: 12) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    std::cerr << "ctkRangeSlider:: 12) "
              << slider.minimumPosition() << " " 
              << slider.maximumPosition() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setMinimumPosition(25);
  if (!checkSlider(slider, -15, -10, 30, 40) ||
       slider.minimumPosition() != 25 || 
       slider.maximumPosition() != 25)
    {
    std::cerr << "ctkRangeSlider:: 13) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    std::cerr << "ctkRangeSlider:: 13) "
              << slider.minimumPosition() << " " 
              << slider.maximumPosition() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setTracking(true);
  slider.setPositions(0, 10);
  if (!checkSlider(slider, -15, 0, 10, 40) ||
      slider.minimumPosition() != 0 || 
      slider.maximumPosition() != 10)
    {
    std::cerr << "ctkRangeSlider:: 14) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    std::cerr << "ctkRangeSlider:: 14) "
              << slider.minimumPosition() << " " 
              << slider.maximumPosition() << std::endl;
    return EXIT_FAILURE;
    }
  slider.setValues(-5, 15);
  if (!checkSlider(slider, -15, -5, 15, 40) ||
      slider.minimumPosition() != -5 || 
      slider.maximumPosition() != 15)
    {
    std::cerr << "ctkRangeSlider:: 15) "
              << slider.minimum() << " " 
              << slider.minimumValue() << " " 
              << slider.maximumValue() << " " 
              << slider.maximum() << std::endl;
    std::cerr << "ctkRangeSlider:: 15) "
              << slider.minimumPosition() << " " 
              << slider.maximumPosition() << std::endl;
    return EXIT_FAILURE;
    }

  slider.setSymmetricMoves(true);
  
  if (slider.symmetricMoves() != true)
    {
    std::cerr << "ctkRangeSlider::setSymmetricMoves failed" << std::endl;
    return EXIT_FAILURE;
    }

  slider.show();

  if (argc < 2 || QString(argv[1]) != "-I" )
    {
    QTimer::singleShot(200, &app, SLOT(quit()));
    }

  return app.exec();
}