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/*
This file is part of Subsonic.
Subsonic 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.
Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package net.sourceforge.subsonic.controller;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Paint;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.axis.LogarithmicAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.springframework.web.servlet.ModelAndView;
import net.sourceforge.subsonic.domain.User;
import net.sourceforge.subsonic.service.SecurityService;
/**
* Controller for generating a chart showing bitrate vs time.
*
* @author Sindre Mehus
*/
public class UserChartController extends AbstractChartController {
private SecurityService securityService;
public static final int IMAGE_WIDTH = 400;
public static final int IMAGE_MIN_HEIGHT = 200;
private static final long BYTES_PER_MB = 1024L * 1024L;
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
String type = request.getParameter("type");
CategoryDataset dataset = createDataset(type);
JFreeChart chart = createChart(dataset, request);
int imageHeight = Math.max(IMAGE_MIN_HEIGHT, 15 * dataset.getColumnCount());
ChartUtilities.writeChartAsPNG(response.getOutputStream(), chart, IMAGE_WIDTH, imageHeight);
return null;
}
private CategoryDataset createDataset(String type) {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
List<User> users = securityService.getAllUsers();
for (User user : users) {
double value;
if ("stream".equals(type)) {
value = user.getBytesStreamed();
} else if ("download".equals(type)) {
value = user.getBytesDownloaded();
} else if ("upload".equals(type)) {
value = user.getBytesUploaded();
} else if ("total".equals(type)) {
value = user.getBytesStreamed() + user.getBytesDownloaded() + user.getBytesUploaded();
} else {
throw new RuntimeException("Illegal chart type: " + type);
}
value /= BYTES_PER_MB;
dataset.addValue(value, "Series", user.getUsername());
}
return dataset;
}
private JFreeChart createChart(CategoryDataset dataset, HttpServletRequest request) {
JFreeChart chart = ChartFactory.createBarChart(null, null, null, dataset, PlotOrientation.HORIZONTAL, false, false, false);
CategoryPlot plot = chart.getCategoryPlot();
Paint background = new GradientPaint(0, 0, Color.lightGray, 0, IMAGE_MIN_HEIGHT, Color.white);
plot.setBackgroundPaint(background);
plot.setDomainGridlinePaint(Color.white);
plot.setDomainGridlinesVisible(true);
plot.setRangeGridlinePaint(Color.white);
plot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);
LogarithmicAxis rangeAxis = new LogarithmicAxis(null);
rangeAxis.setStrictValuesFlag(false);
rangeAxis.setAllowNegativesFlag(true);
plot.setRangeAxis(rangeAxis);
// Disable bar outlines.
BarRenderer renderer = (BarRenderer) plot.getRenderer();
renderer.setDrawBarOutline(false);
// Set up gradient paint for series.
GradientPaint gp0 = new GradientPaint(
0.0f, 0.0f, Color.blue,
0.0f, 0.0f, new Color(0, 0, 64)
);
renderer.setSeriesPaint(0, gp0);
// Rotate labels.
CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0));
// Set theme-specific colors.
Color bgColor = getBackground(request);
Color fgColor = getForeground(request);
chart.setBackgroundPaint(bgColor);
domainAxis.setTickLabelPaint(fgColor);
domainAxis.setTickMarkPaint(fgColor);
domainAxis.setAxisLinePaint(fgColor);
rangeAxis.setTickLabelPaint(fgColor);
rangeAxis.setTickMarkPaint(fgColor);
rangeAxis.setAxisLinePaint(fgColor);
return chart;
}
public void setSecurityService(SecurityService securityService) {
this.securityService = securityService;
}
}
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