Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2010, 2011 Institut Pasteur.
 * 
 * This file is part of ICY.
 * 
 * ICY 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 3 of the License, or
 * (at your option) any later version.
 * 
 * ICY 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 ICY. If not, see <http://www.gnu.org/licenses/>.
 */

import javax.swing.JSlider;

import javax.swing.SwingConstants;

public class Main {
    public static void setTickMarkers(JSlider slider) {
        final int min = slider.getMinimum();
        final int max = slider.getMaximum();
        final int delta = max - min;

        if (delta > 0) {
            final int sliderSize;
            if (slider.getOrientation() == SwingConstants.HORIZONTAL)
                sliderSize = slider.getPreferredSize().width;
            else
                sliderSize = slider.getPreferredSize().height;

            // adjust ticks space on slider
            final int majTick = findBestMajTickSpace(sliderSize, delta);

            slider.setMinorTickSpacing(Math.max(1, majTick / 5));
            slider.setMajorTickSpacing(majTick);
            slider.setLabelTable(slider.createStandardLabels(slider.getMajorTickSpacing(), majTick));
        }
    }

    private static int findBestMajTickSpace(int sliderSize, int delta) {
        final int values[] = { 1, 2, 5, 10, 20, 25, 50, 100, 200, 250, 500, 1000, 2000, 2500, 5000 };
        // wanted a major tick each ~40 pixels
        final int wantedMajTickSpace = delta / (sliderSize / 40);

        int min = Integer.MAX_VALUE;
        int bestValue = 1;

        // try with our predefined values
        for (int value : values) {
            final int dx = Math.abs(value - wantedMajTickSpace);

            if (dx < min) {
                min = dx;
                bestValue = value;
            }
        }

        return bestValue;
    }
}