/* * Copyright 2006-2020 The MZmine Development Team * * This file is part of MZmine. * * MZmine is free software; you can redistribute it and/or modify it under the terms of the GNU * General Public License as published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * MZmine is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General * Public License for more details. * * You should have received a copy of the GNU General Public License along with MZmine; if not, * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 * USA */ package io.github.mzmine.modules.visualization.spectra.simplespectra.spectraidentification; import org.jfree.chart.labels.XYItemLabelGenerator; import org.jfree.data.xy.XYDataset; import io.github.mzmine.modules.visualization.spectra.simplespectra.SpectraPlot; /** * Item label generator annotated peaks in spectra * * @author Ansgar Korf ([email protected]) */ public class SpectraDatabaseSearchLabelGenerator implements XYItemLabelGenerator { public static final int POINTS_RESERVE_X = 100; private SpectraPlot plot; private String[] annotations; public SpectraDatabaseSearchLabelGenerator(String[] annotations, SpectraPlot plot) { this.annotations = annotations; this.plot = plot; } @Override public String generateLabel(XYDataset dataset, int series, int item) { // X and Y values of current data point double originalX = dataset.getX(series, item).doubleValue(); double originalY = dataset.getY(series, item).doubleValue(); // Calculate data size of 1 screen pixel double xLength = plot.getXYPlot().getDomainAxis().getRange().getLength(); double pixelX = xLength / plot.getWidth(); // Size of data set int itemCount = dataset.getItemCount(series); // Search for data points higher than this one in the interval // from limitLeft to limitRight double limitLeft = originalX - ((POINTS_RESERVE_X / 2) * pixelX); double limitRight = originalX + ((POINTS_RESERVE_X / 2) * pixelX); // Iterate data points to the left and right for (int i = 1; (item - i > 0) || (item + i < itemCount); i++) { // If we get out of the limit we can stop searching if ((item - i > 0) && (dataset.getXValue(series, item - i) < limitLeft) && ((item + i >= itemCount) || (dataset.getXValue(series, item + i) > limitRight))) break; if ((item + i < itemCount) && (dataset.getXValue(series, item + i) > limitRight) && ((item - i <= 0) || (dataset.getXValue(series, item - i) < limitLeft))) break; // If we find higher data point, bail out if ((item - i > 0) && (originalY <= dataset.getYValue(series, item - i))) return null; if ((item + i < itemCount) && (originalY <= dataset.getYValue(series, item + i))) return null; } // Create label String label = null; if (dataset.getSeriesKey(1).equals("Detected compounds")) { if (item < annotations.length) label = annotations[item]; } return label; } }