baseplotcontext.cpp

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// Copyright 2021 Filippo Rusconi
// GPL3+
 
#include "baseplotcontext.h"
#include "pappsomspp/core/processing/combiners/integrationscope.h"
#include "pappsomspp/core/processing/combiners/integrationscoperect.h"
#include "pappsomspp/core/processing/combiners/integrationscoperhomb.h"
 
namespace pappso
{
 
std::map<Qt::MouseButton, QString> qtMouseButtonMap{
  {Qt::NoButton, "NoButton"},
  {Qt::LeftButton, "LeftButton"},
  {Qt::RightButton, "RightButton"},
  {Qt::MiddleButton, "MiddleButton"}};
 
std::map<Qt::MouseButtons, QString> qtMouseButtonsMap{
  {Qt::NoButton, "NoButton"},
  {Qt::AllButtons, "AllButtons"},
  {Qt::LeftButton, "LeftButton"},
  {Qt::RightButton, "RightButton"},
  {Qt::MiddleButton, "MiddleButton"},
  {Qt::LeftButton | Qt::RightButton, "LeftRightButtons"},
  {Qt::LeftButton | Qt::MiddleButton, "LeftMiddleButtons"},
  {Qt::RightButton | Qt::MiddleButton, "RightMiddleButtons"},
};
 
std::map<Qt::KeyboardModifier, QString> qtKeyboardModifierMap{
  {Qt::NoModifier, "No modifier"},
  {Qt::ShiftModifier, "A Shift key"},
  {Qt::ControlModifier, "A Ctrl key"},
  {Qt::AltModifier, "An Alt key"},
  {Qt::MetaModifier, "A Meta key"},
  {Qt::KeypadModifier, "A keypad button"},
  {Qt::GroupSwitchModifier, "A Mode_switch key"}};
 
BasePlotContext::BasePlotContext()
{
}
 
BasePlotContext::BasePlotContext(const BasePlotContext &other)
{
  // qDebug() << "Constructing BasePlotContext by copy.";
  initialize(other);
#if 0
  m_dataKind = other.m_dataKind;
 
  m_isMouseDragging  = other.m_isMouseDragging;
  m_wasMouseDragging = other.m_wasMouseDragging;
  m_dragDirections   = other.m_dragDirections;
 
  m_isKeyBoardDragging            = other.m_isKeyBoardDragging;
  m_isLeftPseudoButtonKeyPressed  = other.m_isLeftPseudoButtonKeyPressed;
  m_isRightPseudoButtonKeyPressed = other.m_isRightPseudoButtonKeyPressed;
  m_wasKeyBoardDragging           = other.m_wasKeyBoardDragging;
 
  m_startDragPoint         = other.m_startDragPoint;
  m_currentDragPoint       = other.m_currentDragPoint;
  m_lastCursorHoveredPoint = other.m_lastCursorHoveredPoint;
 
  m_selectionPolygon            = other.m_selectionPolygon;
  
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
  if(other.mpa_integrationScope != nullptr)
    mpa_integrationScope = other.mpa_integrationScope->clone();
  
  m_integrationScopeRhombWidth  = other.m_integrationScopeRhombWidth;
  m_integrationScopeRhombHeight = other.m_integrationScopeRhombHeight;
 
  // The effective range of the axes.
  m_xRange = other.m_xRange;
  m_yRange = other.m_yRange;
 
  // Tell if the mouse move was started onto either axis, because that will
  // condition if some calculations needs to be performed or not (for example,
  // if the mouse cursor motion was started on an axis, there is no point to
  // perform deconvolutions).
  m_wasClickOnXAxis = other.m_wasClickOnXAxis;
  m_wasClickOnYAxis = other.m_wasClickOnYAxis;
 
  m_isMeasuringDistance = other.m_isMeasuringDistance;
 
  // The user-selected region over the plot.
  // Note that we cannot use QCPRange structures because these are normalized by
  // QCustomPlot in such a manner that lower is actually < upper. But we need
  // for a number of our calculations (specifically for the deconvolutions) to
  // actually have the lower value be start drag point.x even if the drag
  // direction was from right to left.
  m_xRegionRangeStart = other.m_xRegionRangeStart;
  m_xRegionRangeStop  = other.m_xRegionRangeStop;
 
  m_yRegionRangeStart = other.m_yRegionRangeStart;
  m_yRegionRangeStop  = other.m_yRegionRangeStop;
 
  m_xDelta = other.m_xDelta;
  m_yDelta = other.m_yDelta;
  
  m_pressedKeyCode  = other.m_pressedKeyCode;
  m_pressedKeyCodes  = other.m_pressedKeyCodes;
  m_pressedKeyText  = other.m_pressedKeyText;
  m_releasedKeyCode = other.m_releasedKeyCode;
  m_releasedKeyCodes = other.m_releasedKeyCodes;
  m_releasedKeyText = other.m_releasedKeyText;
 
  m_keyboardModifiers = other.m_keyboardModifiers;
 
  m_lastPressedMouseButton  = other.m_lastPressedMouseButton;
  m_lastReleasedMouseButton = other.m_lastReleasedMouseButton;
 
  m_pressedMouseButtons = other.m_pressedMouseButtons;
 
  m_mouseButtonsAtMousePress   = other.m_mouseButtonsAtMousePress;
  m_mouseButtonsAtMouseRelease = other.m_mouseButtonsAtMouseRelease;
#endif
}
 
BasePlotContext::~BasePlotContext()
{
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
}
 
BasePlotContext *
BasePlotContext::clone()
{
  return new BasePlotContext(*this);
}
 
void
BasePlotContext::initialize(const BasePlotContext &other)
{
  m_dataKind = other.m_dataKind;
 
  m_isMouseDragging  = other.m_isMouseDragging;
  m_wasMouseDragging = other.m_wasMouseDragging;
  m_dragDirections   = other.m_dragDirections;
 
  m_isKeyBoardDragging            = other.m_isKeyBoardDragging;
  m_isLeftPseudoButtonKeyPressed  = other.m_isLeftPseudoButtonKeyPressed;
  m_isRightPseudoButtonKeyPressed = other.m_isRightPseudoButtonKeyPressed;
  m_wasKeyBoardDragging           = other.m_wasKeyBoardDragging;
 
  m_startDragPoint         = other.m_startDragPoint;
  m_currentDragPoint       = other.m_currentDragPoint;
  m_lastCursorHoveredPoint = other.m_lastCursorHoveredPoint;
 
  m_selectionPolygon            = other.m_selectionPolygon;
 
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
  if(other.mpa_integrationScope != nullptr)
    mpa_integrationScope = other.mpa_integrationScope->clone();
 
  m_integrationScopeRhombWidth  = other.m_integrationScopeRhombWidth;
  m_integrationScopeRhombHeight = other.m_integrationScopeRhombHeight;
 
  // The effective range of the axes.
  m_xRange = other.m_xRange;
  m_yRange = other.m_yRange;
 
  // Tell if the mouse move was started onto either axis, because that will
  // condition if some calculations needs to be performed or not (for example,
  // if the mouse cursor motion was started on an axis, there is no point to
  // perform deconvolutions).
  m_wasClickOnXAxis = other.m_wasClickOnXAxis;
  m_wasClickOnYAxis = other.m_wasClickOnYAxis;
 
  m_isMeasuringDistance = other.m_isMeasuringDistance;
 
  // The user-selected region over the plot.
  // Note that we cannot use QCPRange structures because these are normalized by
  // QCustomPlot in such a manner that lower is actually < upper. But we need
  // for a number of our calculations (specifically for the deconvolutions) to
  // actually have the lower value be start drag point.x even if the drag
  // direction was from right to left.
  m_xRegionRangeStart = other.m_xRegionRangeStart;
  m_xRegionRangeStop   = other.m_xRegionRangeStop;
 
  m_yRegionRangeStart = other.m_yRegionRangeStart;
  m_yRegionRangeStop   = other.m_yRegionRangeStop;
 
  m_xDelta = other.m_xDelta;
  m_yDelta = other.m_yDelta;
 
  m_pressedKeyCode  = other.m_pressedKeyCode;
  m_pressedKeyCodes  = other.m_pressedKeyCodes;
  m_pressedKeyText  = other.m_pressedKeyText;
  m_releasedKeyCode = other.m_releasedKeyCode;
  m_releasedKeyCodes = other.m_releasedKeyCodes;
  m_releasedKeyText = other.m_releasedKeyText;
 
  m_keyboardModifiers = other.m_keyboardModifiers;
 
  m_lastPressedMouseButton  = other.m_lastPressedMouseButton;
  m_lastReleasedMouseButton = other.m_lastReleasedMouseButton;
 
  m_pressedMouseButtons = other.m_pressedMouseButtons;
 
  m_mouseButtonsAtMousePress   = other.m_mouseButtonsAtMousePress;
  m_mouseButtonsAtMouseRelease = other.m_mouseButtonsAtMouseRelease;
}
 
void
BasePlotContext::updateIntegrationScope()
{
  // qDebug();
 
  // By essence, IntegrationScope is 1D scope. The point of the scope is the
  // left bottom point, and then we document the width.
 
  double x_range_start = std::min(m_currentDragPoint.x(), m_startDragPoint.x());
  double x_range_end   = std::max(m_currentDragPoint.x(), m_startDragPoint.x());
 
  double y_position = m_startDragPoint.y();
 
  QPointF point(x_range_start, y_position);
  double width = x_range_end - x_range_start;
 
  // qDebug() << "Going to create an integration scope with point:" << point
  //          << "and width:" << width;
 
  // Because the nature of the integration scope might change inside
  // a given context, we need to delete and reallocate.
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
 
  mpa_integrationScope = new IntegrationScope(point, width);
 
  // qDebug() << "Created integration scope:" <<
  // msp_integrationScope->toString();
}
 
void
BasePlotContext::updateIntegrationScopeRect()
{
  // qDebug();
 
  // By essence, IntegrationScopeRect is a squared rectangle scope. The point of
  // the scope is the left bottom point, and then we document the width and the
  // height.
 
  /* Like this:
*
+---------------------------+  -
|                           |  |
|                           |  |
|                           |  m_height
|                           |  |
|                           |  |
P---------------------------+  -
 
|--------- m_width ---------|
 
*/
 
  // We need to find the point that is actually the left bottom point.
 
  QPointF point;
  double width  = 0;
  double height = 0;
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::LEFT_TO_RIGHT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::BOTTOM_TO_TOP))
    {
      point.rx() = m_startDragPoint.x();
      point.ry() = m_startDragPoint.y();
      width      = m_currentDragPoint.x() - point.rx();
      height     = m_currentDragPoint.y() - point.ry();
      // qDebug() << "left to right - bottom to top";
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::RIGHT_TO_LEFT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::BOTTOM_TO_TOP))
    {
      point.rx() = m_currentDragPoint.x();
      point.ry() = m_currentDragPoint.y();
      width      = m_startDragPoint.x() - m_currentDragPoint.x();
      height     = m_startDragPoint.y() - m_currentDragPoint.y();
      // qDebug() << "right to left - bottom to top";
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::LEFT_TO_RIGHT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::TOP_TO_BOTTOM))
    {
      point.rx() = m_startDragPoint.x();
      point.ry() = m_currentDragPoint.y();
      width      = m_currentDragPoint.x() - m_startDragPoint.x();
      height     = m_startDragPoint.y() - m_currentDragPoint.y();
      // qDebug() << "left to right - top to bottom";
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::RIGHT_TO_LEFT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::TOP_TO_BOTTOM))
    {
      point.rx() = m_currentDragPoint.x();
      point.ry() = m_currentDragPoint.y();
      width      = m_startDragPoint.x() - m_currentDragPoint.x();
      height     = m_startDragPoint.y() - m_currentDragPoint.y();
      // qDebug() << "right to left - top to bottom";
    }
 
  // qDebug() << "The data used to update the integration scope:";
  // qDebug() << "Point:" << point << "width:" << width << "height:" << height;
  //
  // qDebug() << "The integration scope before update:" << mpa_integrationScope;
  //
  // qDebug() << "Will update IntegrationScopeRect with:" << point << "width"
  //          << width << "height" << height;
 
  // Because the nature of the integration scope might change inside
  // a given context, we need to delete and reallocate.
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
  mpa_integrationScope = new IntegrationScopeRect(point, width, height);
 
  // if(typeid(*mpa_integrationScope) == typeid(IntegrationScopeInterface))
  //   qDebug() << "The pointer is of type IntegrationScopeInterface";
  // if(typeid(*mpa_integrationScope) == typeid(IntegrationScope))
  //   qDebug() << "The pointer is of type IntegrationScope";
  // if(typeid(*mpa_integrationScope) == typeid(IntegrationScopeRect))
  //   qDebug() << "The pointer is of type IntegrationScopeRect";
  // if(typeid(*mpa_integrationScope) == typeid(IntegrationScopeRhomb))
  //   qDebug() << "The pointer is of type IntegrationScopeRhomb";
  //
  // qDebug() << "The integration scope right after update:"
  //          << mpa_integrationScope;
  //
  // if(!mpa_integrationScope->getPoint(point))
  //   qFatal("Could not get point.");
  // qDebug() << "The point:" << point;
  // if(!mpa_integrationScope->getWidth(width))
  //   qFatal("Oh no!!!! width");
  // if(!mpa_integrationScope->getWidth(height))
  //   qFatal("Oh no!!!! height");
}
 
void
BasePlotContext::updateIntegrationScopeRhombHorizontal()
{
  // qDebug() << toString();
 
  /*
                     4+----------+3
                      |          |
                     |          |
                    |          |
                   |          |
                  |          |
                 |          |
                |          |
               1+----------+2
                ----width---
*/
 
  // As visible here, the fixed size of the rhomboid (using the S key in the
  // plot widget) is the horizontal side.
 
  // The points are numbered in a counterclockwise manner, starting from the
  // starting drag point. The width side is right of the start drag point if
  // the user drags from left to right and left of the start drag point if
  // the user drags from left to right. In the figure above, the user
  // has dragged the mouse from point 1 and to the right and upwards.
  // Thus the width side is right of point 1. Because the numbering
  // is counterclockwise, that point happens to be numbered 2.
 
  // If the user had draggged the mouse starting at point 3 and to the left
  // and to the bottom, then point 3 above would be point 1, point 4
  // would be point 2 because the width side is left of the start
  // drag point; point 1 would be point 3 and finally the last point
  // would be at point 2.
 
  // Sanity check
  if(m_integrationScopeRhombWidth == 0)
    qFatal(
      "The m_integrationScopeRhombWidth of the fixed rhomboid side cannot be "
      "0.");
 
  QPointF point;
  std::vector<QPointF> points;
 
  // Fill-in the points in the vector in the order they are created
  // while drawing the rhomboid shape. Thus, the first point (start of the
  // mouse click & drag operation is always the same.
 
  point.rx() = m_startDragPoint.x();
  point.ry() = m_startDragPoint.y();
  points.push_back(point);
  // qDebug() << "Start point:" << point;
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::LEFT_TO_RIGHT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::BOTTOM_TO_TOP))
    {
      // Second point.
      point.rx() = m_startDragPoint.x() + m_integrationScopeRhombWidth;
      point.ry() = m_startDragPoint.y();
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx() + m_integrationScopeRhombWidth;
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::RIGHT_TO_LEFT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::BOTTOM_TO_TOP))
    {
      // Second point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx() - m_integrationScopeRhombWidth;
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_startDragPoint.rx() - m_integrationScopeRhombWidth;
      point.ry() = m_startDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::LEFT_TO_RIGHT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::TOP_TO_BOTTOM))
    {
      // Second point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx() + m_integrationScopeRhombWidth;
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_startDragPoint.x() + m_integrationScopeRhombWidth;
      point.ry() = m_startDragPoint.y();
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::RIGHT_TO_LEFT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::TOP_TO_BOTTOM))
    {
      // Second point.
      point.rx() = m_startDragPoint.x() - m_integrationScopeRhombWidth;
      point.ry() = m_startDragPoint.y();
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx() - m_integrationScopeRhombWidth;
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  // Because the nature of the integration scope might change inside
  // a given context, we need to delete and reallocate.
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
 
  mpa_integrationScope = new IntegrationScopeRhomb(points);
 
  // qDebug() << "Created an integration scope horizontal rhomboid with"
  //          << points.size() << "points:" << msp_integrationScope->toString();
}
 
void
BasePlotContext::updateIntegrationScopeRhombVertical()
{
  // qDebug() << toString();
 
  /*
   *                                       +3
   *                                     . |
   *                                   .   |
   *                                 .     |
   *                               .       +2
   *                             .       .
   *                           .       .
   *                         .       .
   *                      4+       .
   *                     | |     .
   *            height   | |   .
   *                     | | .
   *                      1+
   *
   */
 
  // As visible here, the fixed size of the rhomboid (using the S key in the
  // plot widget) is the vertical side.
 
  // The points are numbered in a counterclockwise manner, starting from the
  // starting drag point. The height side is below the start drag point if
  // the user drags from top to bottom and above the start drag point if
  // the user drags from bottom to top. In the figure above, the user
  // has dragged the mouse from point 1 and to the right and upwards.
  // Thus the height side is above the point 1. Because the numbering
  // is counterclockwise, that point happens to be numbered 4.
 
  // If the user had draggged the mouse starting at point 3 and to the left
  // and to the bottom, then point 3 above would be point 1, point 4
  // would be ponit 2, point 1 would be point 3 and finally, because
  // the dragging is from top to bottom, the last point would be at point 2
  // above, because the height side of the rhomboid is below the start
  // drag point.
 
  // Sanity check
  if(m_integrationScopeRhombHeight == 0)
    qFatal("The height of the fixed rhomboid side cannot be 0.");
 
  QPointF point;
  std::vector<QPointF> points;
 
  // Fill-in the points in the vector in the order they are created
  // while drawing the rhomboid shape. Thus, the first point (start of the
  // mouse click & drag operation is always the same, the leftmost bottom point
  // of the drawing above (point 1).
 
  point.rx() = m_startDragPoint.x();
  point.ry() = m_startDragPoint.y();
  points.push_back(point);
  // qDebug() << "Start point:" << point;
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::LEFT_TO_RIGHT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::BOTTOM_TO_TOP))
    {
      // Second point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry() + m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_startDragPoint.x();
      point.ry() = m_startDragPoint.y() + m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::RIGHT_TO_LEFT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::BOTTOM_TO_TOP))
    {
      // Second point.
      point.rx() = m_startDragPoint.rx();
      point.ry() = m_startDragPoint.ry() + m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry() + m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_currentDragPoint.x();
      point.ry() = m_currentDragPoint.y();
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::LEFT_TO_RIGHT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::TOP_TO_BOTTOM))
    {
      // Second point.
      point.rx() = m_startDragPoint.x();
      point.ry() = m_startDragPoint.y() - m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry() - m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  if(static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::RIGHT_TO_LEFT) &&
     static_cast<int>(m_dragDirections) &
       static_cast<int>(DragDirections::TOP_TO_BOTTOM))
    {
      // Second point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry();
      points.push_back(point);
      // qDebug() << "Second point:" << point;
 
      // Third point.
      point.rx() = m_currentDragPoint.rx();
      point.ry() = m_currentDragPoint.ry() - m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Third point:" << point;
 
      // Fourth point.
      point.rx() = m_startDragPoint.rx();
      point.ry() = m_startDragPoint.ry() - m_integrationScopeRhombHeight;
      points.push_back(point);
      // qDebug() << "Last point:" << point;
    }
 
  // Because the nature of the integration scope might change inside
  // a given context, we need to delete and reallocate.
  if(mpa_integrationScope != nullptr)
    delete mpa_integrationScope;
 
  mpa_integrationScope = new IntegrationScopeRhomb(points);
 
  // qDebug() << "Created an integration scope vertical rhomboid with"
  //          << points.size() << "points:" << msp_integrationScope->toString();
}
 
void
BasePlotContext::updateIntegrationScopeRhomb()
{
  // qDebug() << toString();
 
  // By essence, IntegrationScopeRhomb is a rhomboid polygon. Just set the
  // points. There are two kinds of rhomboid integration scopes: horizontal and
  // vertical.
 
  /*
                      +----------+
                      |          |
                     |          |
                    |          |
                   |          |
                  |          |
                 |          |
                |          |
                +----------+
                ----width---
*/
 
  // As visible here, the fixed size of the rhomboid (using the S key in the
  // plot widget) is the *horizontal* side (that is, the rhomboid has a non-0
  // width)..
 
  // However, it might be useful to be able to draw rhomboid integration scopes
  // like this, that would correspond to the rhomboid above after a transpose
  // operation.
 
  /*
                                 +
                               . |
                             .   |
                           .     |
                         .       +
                       .       .
                     .       .
                   .       .
                 +       .
               | |     .
      height   | |   .
               | | .
                 +
 
*/
 
  // As visible here, the fixed size of the rhomboid (using the S key in the
  // plot widget) is the vertical side (that is, the rhomboid has a non-0
  // height).
 
  // The general rule is thus that when the m_integrationScopeRhombWidth is
  // not-0, then the first shape is considered, while when the
  // m_integrationScopeRhombHeight is non-0, then the second shape is
  // considered.
 
  // This function is called when the user has dragged the cursor (left or right
  // button, not for or for integration, respectively) with the 'Alt' modifier
  // key pressed, so that they want to perform a rhomboid integration scope
  // calculation.
 
  // Of course, the integration scope in the context might not be a rhomboid
  // scope, because we might enter this function as a very firt switch from
  // scope or scopeRect to scopeRhomb. The only indication we have to direct the
  // creation of a horizontal or vertical rhomboid is the
  // m_integrationScopeRhombWidth/m_integrationScopeRhombHeight recorded in the
  // plot widget that owns this plot context.
 
  // qDebug() << "In updateIntegrationScopeRhomb, m_integrationScopeRhombWidth:"
  //          << m_integrationScopeRhombWidth
  //          << "and m_integrationScopeRhombHeight:"
  //          << m_integrationScopeRhombHeight;
 
  if(!m_integrationScopeRhombWidth && !m_integrationScopeRhombHeight)
    qFatal(
      "Both m_integrationScopeRhombWidth and m_integrationScopeRhombHeight of "
      "rhomboid integration scope cannot be 0.");
 
  if(m_integrationScopeRhombWidth != 0)
    return updateIntegrationScopeRhombHorizontal();
  else if(m_integrationScopeRhombHeight != 0)
    return updateIntegrationScopeRhombVertical();
}
 
BasePlotContext &
BasePlotContext::operator=(const BasePlotContext &other)
{
  if(this == &other)
    return *this;
 
  m_dataKind = other.m_dataKind;
 
  m_isMouseDragging  = other.m_isMouseDragging;
  m_wasMouseDragging = other.m_wasMouseDragging;
 
  m_isKeyBoardDragging            = other.m_isKeyBoardDragging;
  m_isLeftPseudoButtonKeyPressed  = other.m_isLeftPseudoButtonKeyPressed;
  m_isRightPseudoButtonKeyPressed = other.m_isRightPseudoButtonKeyPressed;
  m_wasKeyBoardDragging           = other.m_wasKeyBoardDragging;
 
  m_startDragPoint         = other.m_startDragPoint;
  m_currentDragPoint       = other.m_currentDragPoint;
  m_lastCursorHoveredPoint = other.m_lastCursorHoveredPoint;
 
  m_selectionPolygon            = other.m_selectionPolygon;
  mpa_integrationScope          = other.mpa_integrationScope->clone();
  m_integrationScopeRhombWidth  = other.m_integrationScopeRhombWidth;
  m_integrationScopeRhombHeight = other.m_integrationScopeRhombHeight;
 
  // The effective range of the axes.
  m_xRange = other.m_xRange;
  m_yRange = other.m_yRange;
 
  // Tell if the mouse move was started onto either axis, because that will
  // condition if some calculations needs to be performed or not (for example,
  // if the mouse cursor motion was started on an axis, there is no point to
  // perform deconvolutions).
  m_wasClickOnXAxis = other.m_wasClickOnXAxis;
  m_wasClickOnYAxis = other.m_wasClickOnYAxis;
 
  m_isMeasuringDistance = other.m_isMeasuringDistance;
 
  // The user-selected region over the plot.
  // Note that we cannot use QCPRange structures because these are normalized by
  // QCustomPlot in such a manner that lower is actually < upper. But we need
  // for a number of our calculations (specifically for the deconvolutions) to
  // actually have the lower value be start drag point.x even if the drag
  // direction was from right to left.
  m_xRegionRangeStart = other.m_xRegionRangeStart;
  m_xRegionRangeStop  = other.m_xRegionRangeStop;
 
  m_yRegionRangeStart = other.m_yRegionRangeStart;
  m_yRegionRangeStop  = other.m_yRegionRangeStop;
 
  m_xDelta = other.m_xDelta;
  m_yDelta = other.m_yDelta;
 
  m_pressedKeyCode  = other.m_pressedKeyCode;
  m_pressedKeyText  = other.m_pressedKeyText;
  m_releasedKeyCode = other.m_releasedKeyCode;
  m_releasedKeyText = other.m_releasedKeyText;
 
  m_keyboardModifiers = other.m_keyboardModifiers;
 
  m_lastPressedMouseButton  = other.m_lastPressedMouseButton;
  m_lastReleasedMouseButton = other.m_lastReleasedMouseButton;
 
  m_pressedMouseButtons = other.m_pressedMouseButtons;
 
  m_mouseButtonsAtMousePress   = other.m_mouseButtonsAtMousePress;
  m_mouseButtonsAtMouseRelease = other.m_mouseButtonsAtMouseRelease;
 
  return *this;
}
 
DragDirections
BasePlotContext::recordDragDirections()
{
  int drag_directions = static_cast<int>(DragDirections::NOT_SET);
 
  if(m_currentDragPoint.x() > m_startDragPoint.x())
    drag_directions |= static_cast<int>(DragDirections::LEFT_TO_RIGHT);
  else
    drag_directions |= static_cast<int>(DragDirections::RIGHT_TO_LEFT);
 
  if(m_currentDragPoint.y() > m_startDragPoint.y())
    drag_directions |= static_cast<int>(DragDirections::BOTTOM_TO_TOP);
  else
    drag_directions |= static_cast<int>(DragDirections::TOP_TO_BOTTOM);
 
  // qDebug() << "DragDirections:" << drag_directions;
 
  m_dragDirections = static_cast<DragDirections>(drag_directions);
 
  return static_cast<DragDirections>(drag_directions);
}
 
QString
BasePlotContext::toString() const
{
  QString text("Context:");
 
  text += QString(" data kind: %1").arg(static_cast<int>(m_dataKind));
 
  text += QString(" -- isMouseDragging: %1 -- wasMouseDragging: %2")
            .arg(m_isMouseDragging ? "true" : "false")
            .arg(m_wasMouseDragging ? "true" : "false");
 
  text += QString(" -- startDragPoint : (%1, %2)")
            .arg(m_startDragPoint.x())
            .arg(m_startDragPoint.y());
 
  text += QString(" -- currentDragPoint : (%1, %2)")
            .arg(m_currentDragPoint.x())
            .arg(m_currentDragPoint.y());
 
  text += QString(" -- lastCursorHoveredPoint : (%1, %2)")
            .arg(m_lastCursorHoveredPoint.x())
            .arg(m_lastCursorHoveredPoint.y());
 
  text += dragDirectionsToString();
 
  if(mpa_integrationScope != nullptr)
    {
      // The integration scope
      text += " -- Integration scope: ";
      text += mpa_integrationScope->toString();
      text += " -- ";
    }
 
  text += QString(" -- xRange: (%1, %2)").arg(m_xRange.lower).arg(m_xRange.upper);
 
  text +=
    QString(" -- yRange: (%1, %2)").arg(m_yRange.lower).arg(m_yRange.upper);
 
  text += QString(" -- wasClickOnXAxis: %1")
            .arg(m_wasClickOnXAxis ? "true" : "false");
  text += QString(" -- wasClickOnYAxis: %1")
            .arg(m_wasClickOnYAxis ? "true" : "false");
  text += QString(" -- isMeasuringDistance: %1")
            .arg(m_isMeasuringDistance ? "true" : "false");
 
  text += QString(" -- xRegionRangeStart: %1 -- xRegionRangeEnd: %2")
            .arg(m_xRegionRangeStart)
            .arg(m_xRegionRangeStop);
 
  text += QString(" -- yRegionRangeStart: %1 -- yRegionRangeEnd: %2")
            .arg(m_yRegionRangeStart)
            .arg(m_yRegionRangeStop);
 
  text += QString(" -- xDelta: %1 -- yDelta: %2").arg(m_xDelta).arg(m_yDelta);
 
  text += QString(" -- pressedKeyCode: %1").arg(m_pressedKeyCode);
 
  if(m_pressedKeyCodes.size())
    {
      for(int key : m_pressedKeyCodes)
        text += QString(" -- pressedKeyCodes key: %1").arg(key);
    }
 
  text += QString(" -- releasedKeyCode: %1").arg(m_releasedKeyCode);
 
  if(m_releasedKeyCodes.size())
    {
      for(int key : m_releasedKeyCodes)
        text += QString(" -- releasedKeyCodes key: %1").arg(key);
    }
 
  // Qt::NoModifier0x00000000No modifier key is pressed.
  // Qt::ShiftModifier0x02000000A Shift key on the keyboard is pressed.
  // Qt::ControlModifier0x04000000A Ctrl key on the keyboard is pressed.
  // Qt::AltModifier0x08000000An Alt key on the keyboard is pressed.
  // Qt::MetaModifier0x10000000A Meta key on the keyboard is pressed.
  // Qt::KeypadModifier0x20000000A keypad button is pressed.
  // Qt::GroupSwitchModifier0x40000000X11 only (unless activated on Windows by a
  // command line argument).
  //                                       A Mode_switch key on the keyboard is
  //                                       pressed.
 
  text += QString(" -- keyboardModifiers: ");
 
  if(m_keyboardModifiers == Qt::NoModifier)
    text += QString("%1 - ").arg(qtKeyboardModifierMap[Qt::NoModifier]);
 
  if(static_cast<int>(m_keyboardModifiers) & Qt::ShiftModifier)
    text += QString("%1 - ").arg(qtKeyboardModifierMap[Qt::ShiftModifier]);
 
  if(static_cast<int>(m_keyboardModifiers) & Qt::ControlModifier)
    text += QString("%1 - ").arg(qtKeyboardModifierMap[Qt::ControlModifier]);
 
  if(static_cast<int>(m_keyboardModifiers) & Qt::AltModifier)
    text += QString("%1 - ").arg(qtKeyboardModifierMap[Qt::AltModifier]);
 
  if(static_cast<int>(m_keyboardModifiers) & Qt::MetaModifier)
    text += QString("%1 - ").arg(qtKeyboardModifierMap[Qt::MetaModifier]);
 
  if(static_cast<int>(m_keyboardModifiers) & Qt::KeypadModifier)
    text += QString("%1 - ").arg(qtKeyboardModifierMap[Qt::KeypadModifier]);
 
  if(static_cast<int>(m_keyboardModifiers) & Qt::GroupSwitchModifier)
    text +=
      QString("%1 - ").arg(qtKeyboardModifierMap[Qt::GroupSwitchModifier]);
 
  text += QString(" -- lastPressedMouseButton: %1")
            .arg(qtMouseButtonsMap[m_lastPressedMouseButton]);
 
  text += QString(" -- lastReleasedMouseButton: %1")
            .arg(qtMouseButtonsMap[m_lastReleasedMouseButton]);
 
  text += QString(" -- pressedMouseButtons: %1")
            .arg(qtMouseButtonsMap[m_pressedMouseButtons]);
 
  text += QString(" -- mouseButtonsAtMousePress: %1")
            .arg(qtMouseButtonsMap[m_mouseButtonsAtMousePress]);
 
  text += QString(" -- mouseButtonsAtMouseRelease: %1")
            .arg(qtMouseButtonsMap[m_mouseButtonsAtMouseRelease]);
 
  return text;
}
 
QString
BasePlotContext::dragDirectionsToString() const
{
  QString text;
 
  // Document how the mouse cursor is being dragged.
  if(m_isMouseDragging)
    {
      if(static_cast<int>(m_dragDirections) &
         static_cast<int>(DragDirections::LEFT_TO_RIGHT))
        text += " -- dragging from left to right";
      else if(static_cast<int>(m_dragDirections) &
              static_cast<int>(DragDirections::RIGHT_TO_LEFT))
        text += " -- dragging from right to left";
      if(static_cast<int>(m_dragDirections) &
         static_cast<int>(DragDirections::TOP_TO_BOTTOM))
        text += " -- dragging from top to bottom";
      if(static_cast<int>(m_dragDirections) &
         static_cast<int>(DragDirections::BOTTOM_TO_TOP))
        text += " -- dragging from bottom to top";
    }
 
  return text;
}
 
 
} // namespace pappso