Method contextMenuEvent

src/openms_gui/source/VISUAL/MultiGradientSelector.cpp:221–315

  }

  void MultiGradientSelector::contextMenuEvent(QContextMenuEvent * e)
  {
    QMenu main_menu(this);
    //Default gradient
    QMenu * defaults = main_menu.addMenu("Default gradients");
    defaults->addAction("grey - yellow - red - purple - blue - black");
    defaults->addAction("grey - black");
    defaults->addAction("yellow - red - purple - blue - black");
    defaults->addAction("orange - red - purple - blue - black");
    defaults->addAction("yellow - orange - red");
    defaults->addSeparator();
    defaults->addAction("black");
    defaults->addAction("white");
    defaults->addAction("red");
    defaults->addAction("green");
    defaults->addAction("blue");
    defaults->addAction("magenta");
    defaults->addAction("turquoise");
    defaults->addAction("yellow");

    //Interploate/Stairs
    QMenu * inter = main_menu.addMenu("Interpolation");
    QAction * current = inter->addAction("None");
    if (gradient_.getInterpolationMode() == MultiGradient::IM_STAIRS)
      current->setEnabled(false);
    current = inter->addAction("Linear");
    if (gradient_.getInterpolationMode() == MultiGradient::IM_LINEAR)
      current->setEnabled(false);

    //Execute
    QAction * result;
    if ((result = main_menu.exec(e->globalPos())))
    {
      if (result->text() == "grey - yellow - red - purple - blue - black")
      {
        gradient_ = MultiGradient::getDefaultGradientLinearIntensityMode();
      }
      if (result->text() == "grey - black")
      {
        gradient_ = MultiGradient::getDefaultGradientLogarithmicIntensityMode();
      }
      else if (result->text() == "yellow - red - purple - blue - black")
      {
        gradient_.fromString("Linear|0,#ffea00;6,#ff0000;14,#aa00ff;23,#5500ff;100,#000000");
      }
      else if (result->text() == "orange - red - purple - blue - black")
      {
        gradient_.fromString("Linear|0,#ffaa00;6,#ff0000;14,#aa00ff;23,#5500ff;100,#000000");
      }
      else if (result->text() == "yellow - orange - red")
      {
        gradient_.fromString("Linear|0,#ffea00;6,#ffaa00;100,#ff0000");
      }
      else if (result->text() == "black")
      {
        gradient_.fromString("Linear|0,#000000;100,#000000");
      }
      else if (result->text() == "white")