/*
* ARX: Powerful Data Anonymization
* Copyright 2012 - 2017 Fabian Prasser, Florian Kohlmayer and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.deidentifier.arx.gui.view.impl.utility;
import org.deidentifier.arx.AttributeType.Hierarchy;
import org.deidentifier.arx.DataHandle;
import org.deidentifier.arx.aggregates.StatisticsBuilderInterruptible;
import org.deidentifier.arx.aggregates.StatisticsFrequencyDistribution;
import org.deidentifier.arx.gui.Controller;
import org.deidentifier.arx.gui.model.ModelEvent.ModelPart;
import org.deidentifier.arx.gui.resources.Resources;
import org.deidentifier.arx.gui.view.SWTUtil;
import org.deidentifier.arx.gui.view.impl.common.async.Analysis;
import org.deidentifier.arx.gui.view.impl.common.async.AnalysisContext;
import org.deidentifier.arx.gui.view.impl.common.async.AnalysisManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlAdapter;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.swtchart.Chart;
import org.swtchart.IAxis;
import org.swtchart.IAxisSet;
import org.swtchart.IBarSeries;
import org.swtchart.ISeries;
import org.swtchart.ISeries.SeriesType;
import org.swtchart.ISeriesSet;
import org.swtchart.ITitle;
import org.swtchart.Range;
/**
* This view displays a frequency distribution.
*
* @author Fabian Prasser
*/
public class ViewStatisticsDistributionHistogram extends ViewStatistics<AnalysisContextDistribution> {
/** Minimal width of a category label. */
private static final int MIN_CATEGORY_WIDTH = 10;
/** The chart. */
private Chart chart;
/** Internal stuff. */
private Composite root;
/** Internal stuff. */
private AnalysisManager manager;
/**
* Creates a new instance.
*
* @param parent
* @param controller
* @param target
* @param reset
*/
public ViewStatisticsDistributionHistogram(final Composite parent,
final Controller controller,
final ModelPart target,
final ModelPart reset) {
super(parent, controller, target, reset, true);
this.manager = new AnalysisManager(parent.getDisplay());
}
@Override
public LayoutUtility.ViewUtilityType getType() {
return LayoutUtility.ViewUtilityType.HISTOGRAM;
}
/**
* Resets the chart
*/
private void resetChart() {
if (chart != null) {
chart.dispose();
}
chart = new Chart(root, SWT.NONE);
chart.setOrientation(SWT.HORIZONTAL);
// Show/Hide axis
chart.addControlListener(new ControlAdapter(){
@Override
public void controlResized(ControlEvent arg0) {
updateCategories();
}
});
// Update font
FontData[] fd = chart.getFont().getFontData();
fd[0].setHeight(8);
final Font font = new Font(chart.getDisplay(), fd[0]);
chart.setFont(font);
chart.addDisposeListener(new DisposeListener(){
public void widgetDisposed(DisposeEvent arg0) {
if (font != null && !font.isDisposed()) {
font.dispose();
}
}
});
// Update title
ITitle graphTitle = chart.getTitle();
graphTitle.setText(""); //$NON-NLS-1$
graphTitle.setFont(chart.getFont());
// Set colors
chart.setBackground(root.getBackground());
chart.setForeground(root.getForeground());
// OSX workaround
if (System.getProperty("os.name").toLowerCase().contains("mac")){ //$NON-NLS-1$ //$NON-NLS-2$
int r = chart.getBackground().getRed()-13;
int g = chart.getBackground().getGreen()-13;
int b = chart.getBackground().getBlue()-13;
r = r>0 ? r : 0;
r = g>0 ? g : 0;
r = b>0 ? b : 0;
final Color background = new Color(chart.getDisplay(), r, g, b);
chart.setBackground(background);
chart.addDisposeListener(new DisposeListener(){
public void widgetDisposed(DisposeEvent arg0) {
if (background != null && !background.isDisposed()) {
background.dispose();
}
}
});
}
// Initialize axes
IAxisSet axisSet = chart.getAxisSet();
IAxis yAxis = axisSet.getYAxis(0);
IAxis xAxis = axisSet.getXAxis(0);
ITitle xAxisTitle = xAxis.getTitle();
xAxisTitle.setText(""); //$NON-NLS-1$
xAxis.getTitle().setFont(chart.getFont());
yAxis.getTitle().setFont(chart.getFont());
xAxis.getTick().setFont(chart.getFont());
yAxis.getTick().setFont(chart.getFont());
xAxis.getTick().setForeground(chart.getForeground());
yAxis.getTick().setForeground(chart.getForeground());
xAxis.getTitle().setForeground(chart.getForeground());
yAxis.getTitle().setForeground(chart.getForeground());
// Initialize y-axis
ITitle yAxisTitle = yAxis.getTitle();
yAxisTitle.setText(Resources.getMessage("ViewRisksClassDistributionPlot.0")); //$NON-NLS-1$
chart.setEnabled(false);
updateCategories();
}
/**
* Makes the chart show category labels or not.
*/
private void updateCategories(){
if (chart != null){
IAxisSet axisSet = chart.getAxisSet();
if (axisSet != null) {
IAxis xAxis = axisSet.getXAxis(0);
if (xAxis != null) {
String[] series = xAxis.getCategorySeries();
if (series != null) {
boolean enoughSpace = chart.getPlotArea().getSize().x / series.length >= MIN_CATEGORY_WIDTH;
xAxis.enableCategory(enoughSpace);
xAxis.getTick().setVisible(enoughSpace);
}
}
}
}
}
@Override
protected Control createControl(Composite parent) {
this.root = new Composite(parent, SWT.NONE);
this.root.setLayout(new FillLayout());
// Tool tip
root.addListener(SWT.MouseMove, new Listener() {
@Override
public void handleEvent(Event event) {
if (chart != null) {
IAxisSet axisSet = chart.getAxisSet();
if (axisSet != null) {
IAxis xAxis = axisSet.getXAxis(0);
if (xAxis != null) {
Point cursor = chart.getPlotArea().toControl(Display.getCurrent().getCursorLocation());
if (cursor.x >= 0 && cursor.x < chart.getPlotArea().getSize().x &&
cursor.y >= 0 && cursor.y < chart.getPlotArea().getSize().y) {
String[] series = xAxis.getCategorySeries();
ISeries[] data = chart.getSeriesSet().getSeries();
if (data != null && data.length>0 && series != null) {
int x = (int) Math.round(xAxis.getDataCoordinate(cursor.x));
if (x >= 0 && x < series.length) {
root.setToolTipText("("+series[x]+", "+SWTUtil.getPrettyString(data[0].getYSeries()[x])+")"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
return;
}
}
}
}
}
root.setToolTipText(null);
}
}
});
return this.root;
}
@Override
protected AnalysisContextDistribution createViewConfig(AnalysisContext context) {
return new AnalysisContextDistribution(context);
}
@Override
protected void doReset() {
root.setRedraw(false);
if (this.manager != null) {
this.manager.stop();
}
resetChart();
root.setRedraw(true);
setStatusEmpty();
}
@Override
protected void doUpdate(AnalysisContextDistribution context) {
// The statistics builder
final StatisticsBuilderInterruptible builder = context.handle.getStatistics().getInterruptibleInstance();
final Hierarchy hierarchy = context.context.getHierarchy(context.context.getData(), context.attribute);
final DataHandle handle = context.handle;
final int column = handle.getColumnIndexOf(context.attribute);
// Create an analysis
Analysis analysis = new Analysis(){
private boolean stopped = false;
private StatisticsFrequencyDistribution distribution;
@Override
public int getProgress() {
return 0;
}
@Override
public void onError() {
setStatusEmpty();
}
@Override
public void onFinish() {
// Check
if (stopped || !isEnabled()) {
return;
}
// Update chart
chart.setRedraw(false);
ISeriesSet seriesSet = chart.getSeriesSet();
IBarSeries series = (IBarSeries) seriesSet.createSeries(SeriesType.BAR,
Resources.getMessage("DistributionView.9")); //$NON-NLS-1$
series.getLabel().setVisible(false);
series.getLabel().setFont(chart.getFont());
series.setBarColor(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
for (int i = 0; i < this.distribution.frequency.length; i++) {
this.distribution.frequency[i] *= 100d;
}
series.setYSeries(this.distribution.frequency);
chart.getLegend().setVisible(false);
IAxisSet axisSet = chart.getAxisSet();
IAxis yAxis = axisSet.getYAxis(0);
yAxis.setRange(new Range(0d, 100d));
yAxis.adjustRange();
IAxis xAxis = axisSet.getXAxis(0);
xAxis.setCategorySeries(this.distribution.values);
xAxis.adjustRange();
updateCategories();
chart.updateLayout();
chart.update();
chart.setRedraw(true);
chart.redraw();
setStatusDone();
}
@Override
public void onInterrupt() {
if (!isEnabled()) {
setStatusEmpty();
} else {
setStatusWorking();
}
}
@Override
public void run() throws InterruptedException {
// Timestamp
long time = System.currentTimeMillis();
// Perform work
this.distribution = builder.getFrequencyDistribution(column, hierarchy);
// Our users are patient
while (System.currentTimeMillis() - time < MINIMAL_WORKING_TIME && !stopped){
Thread.sleep(10);
}
}
@Override
public void stop() {
builder.interrupt();
this.stopped = true;
}
};
this.manager.start(analysis);
}
/**
* Is an analysis running
*/
protected boolean isRunning() {
return manager != null && manager.isRunning();
}
}