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2e427755 | 1 | /******************************************************************************* |
4e72adee | 2 | * Copyright (c) 2014, 2015 École Polytechnique de Montréal and others. |
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3 | * |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Geneviève Bastien - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
2bdf0193 | 13 | package org.eclipse.tracecompass.tmf.ui.viewers.xycharts.linecharts; |
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14 | |
15 | import java.util.LinkedHashMap; | |
16 | import java.util.Map; | |
17 | import java.util.Map.Entry; | |
18 | ||
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19 | import org.eclipse.core.runtime.IProgressMonitor; |
20 | import org.eclipse.core.runtime.NullProgressMonitor; | |
c85a741e | 21 | import org.eclipse.swt.SWT; |
54404589 | 22 | import org.eclipse.swt.graphics.Point; |
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23 | import org.eclipse.swt.widgets.Composite; |
24 | import org.eclipse.swt.widgets.Display; | |
54404589 | 25 | import org.eclipse.tracecompass.tmf.core.signal.TmfSignalManager; |
2bdf0193 | 26 | import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace; |
8a328018 | 27 | import org.eclipse.tracecompass.tmf.ui.TmfUiRefreshHandler; |
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28 | import org.eclipse.tracecompass.tmf.ui.signal.TmfTimeViewAlignmentInfo; |
29 | import org.eclipse.tracecompass.tmf.ui.signal.TmfTimeViewAlignmentSignal; | |
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30 | import org.eclipse.tracecompass.tmf.ui.viewers.xycharts.TmfChartTimeStampFormat; |
31 | import org.eclipse.tracecompass.tmf.ui.viewers.xycharts.TmfXYChartViewer; | |
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32 | import org.swtchart.IAxisTick; |
33 | import org.swtchart.ILineSeries; | |
34 | import org.swtchart.ILineSeries.PlotSymbolType; | |
35 | import org.swtchart.ISeries; | |
36 | import org.swtchart.ISeries.SeriesType; | |
c85a741e | 37 | import org.swtchart.ISeriesSet; |
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38 | import org.swtchart.LineStyle; |
39 | import org.swtchart.Range; | |
40 | ||
41 | /** | |
42 | * Abstract line chart viewer class implementation. All series in this viewer | |
43 | * use the same X axis values. They are automatically created as values are | |
44 | * provided for a key. Series by default will be displayed as a line. Each | |
45 | * series appearance can be overridden when creating it. | |
46 | * | |
47 | * @author - Geneviève Bastien | |
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48 | */ |
49 | public abstract class TmfCommonXLineChartViewer extends TmfXYChartViewer { | |
50 | ||
51 | private static final double DEFAULT_MAXY = Double.MIN_VALUE; | |
52 | private static final double DEFAULT_MINY = Double.MAX_VALUE; | |
53 | ||
54 | /* The desired number of points per pixel */ | |
55 | private static final double RESOLUTION = 1.0; | |
56 | ||
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57 | private static final int[] LINE_COLORS = { SWT.COLOR_BLUE, SWT.COLOR_RED, SWT.COLOR_GREEN, |
58 | SWT.COLOR_MAGENTA, SWT.COLOR_CYAN, | |
59 | SWT.COLOR_DARK_BLUE, SWT.COLOR_DARK_RED, SWT.COLOR_DARK_GREEN, | |
60 | SWT.COLOR_DARK_MAGENTA, SWT.COLOR_DARK_CYAN, SWT.COLOR_DARK_YELLOW, | |
61 | SWT.COLOR_BLACK, SWT.COLOR_GRAY }; | |
62 | private static final LineStyle[] LINE_STYLES = { LineStyle.SOLID, LineStyle.DASH, LineStyle.DOT, LineStyle.DASHDOT }; | |
63 | ||
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64 | private final Map<String, double[]> fSeriesValues = new LinkedHashMap<>(); |
65 | private double[] fXValues; | |
9392459a | 66 | private double fResolution; |
2e427755 | 67 | |
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68 | private UpdateThread fUpdateThread; |
69 | ||
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70 | /** |
71 | * Constructor | |
72 | * | |
73 | * @param parent | |
74 | * The parent composite | |
75 | * @param title | |
76 | * The title of the viewer | |
77 | * @param xLabel | |
78 | * The label of the xAxis | |
79 | * @param yLabel | |
80 | * The label of the yAXIS | |
81 | */ | |
82 | public TmfCommonXLineChartViewer(Composite parent, String title, String xLabel, String yLabel) { | |
83 | super(parent, title, xLabel, yLabel); | |
84 | ||
9392459a | 85 | setResolution(RESOLUTION); |
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86 | setTooltipProvider(new TmfCommonXLineChartTooltipProvider(this)); |
87 | } | |
88 | ||
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89 | /** |
90 | * Set the number of requests per pixel that should be done on this chart | |
91 | * | |
92 | * @param resolution | |
93 | * The number of points per pixels | |
94 | */ | |
95 | protected void setResolution(double resolution) { | |
96 | fResolution = resolution; | |
97 | } | |
98 | ||
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99 | @Override |
100 | public void loadTrace(ITmfTrace trace) { | |
101 | super.loadTrace(trace); | |
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102 | reinitialize(); |
103 | } | |
104 | ||
105 | /** | |
106 | * Forces a reinitialization of the data sources, even if it has already | |
107 | * been initialized for this trace before | |
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108 | */ |
109 | protected void reinitialize() { | |
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110 | fSeriesValues.clear(); |
111 | Thread thread = new Thread() { | |
112 | @Override | |
113 | public void run() { | |
114 | initializeDataSource(); | |
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115 | TmfUiRefreshHandler.getInstance().queueUpdate(TmfCommonXLineChartViewer.this, |
116 | new Runnable() { | |
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117 | @Override |
118 | public void run() { | |
119 | if (!getSwtChart().isDisposed()) { | |
120 | /* Delete the old series */ | |
121 | clearContent(); | |
122 | createSeries(); | |
123 | } | |
124 | } | |
125 | }); | |
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126 | } |
127 | }; | |
128 | thread.start(); | |
129 | } | |
130 | ||
131 | /** | |
132 | * Initialize the source of the data for this viewer. This method is run in | |
133 | * a separate thread, so this is where for example one can execute an | |
134 | * analysis module and wait for its completion to initialize the series | |
135 | */ | |
136 | protected void initializeDataSource() { | |
137 | ||
138 | } | |
139 | ||
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140 | private class UpdateThread extends Thread { |
141 | private final IProgressMonitor fMonitor; | |
142 | private final int fNumRequests; | |
143 | ||
144 | public UpdateThread(int numRequests) { | |
145 | super("Line chart update"); //$NON-NLS-1$ | |
146 | fNumRequests = numRequests; | |
147 | fMonitor = new NullProgressMonitor(); | |
148 | } | |
149 | ||
150 | @Override | |
151 | public void run() { | |
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152 | Display.getDefault().syncExec(new Runnable() { |
153 | @Override | |
154 | public void run() { | |
155 | updateData(getWindowStartTime(), getWindowEndTime(), fNumRequests, fMonitor); | |
156 | } | |
157 | }); | |
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158 | updateThreadFinished(this); |
159 | } | |
160 | ||
161 | public void cancel() { | |
162 | fMonitor.setCanceled(true); | |
163 | } | |
164 | } | |
165 | ||
166 | private synchronized void newUpdateThread() { | |
167 | cancelUpdate(); | |
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168 | if (!getSwtChart().isDisposed()) { |
169 | final int numRequests = (int) (getSwtChart().getPlotArea().getBounds().width * fResolution); | |
170 | fUpdateThread = new UpdateThread(numRequests); | |
171 | fUpdateThread.start(); | |
172 | } | |
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173 | } |
174 | ||
175 | private synchronized void updateThreadFinished(UpdateThread thread) { | |
176 | if (thread == fUpdateThread) { | |
177 | fUpdateThread = null; | |
178 | } | |
179 | } | |
180 | ||
181 | /** | |
182 | * Cancels the currently running update thread. It is automatically called | |
183 | * when the content is updated, but child viewers may want to call it | |
184 | * manually to do some operations before calling | |
185 | * {@link TmfCommonXLineChartViewer#updateContent} | |
186 | */ | |
187 | protected synchronized void cancelUpdate() { | |
188 | if (fUpdateThread != null) { | |
189 | fUpdateThread.cancel(); | |
190 | } | |
191 | } | |
192 | ||
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193 | @Override |
194 | protected void updateContent() { | |
195 | getDisplay().asyncExec(new Runnable() { | |
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196 | @Override |
197 | public void run() { | |
00968516 | 198 | newUpdateThread(); |
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199 | } |
200 | }); | |
201 | } | |
202 | ||
203 | /** | |
204 | * Convenience method to compute the values of the X axis for a given time | |
205 | * range. This method will return nb values depending, equally separated | |
206 | * from start to end. | |
207 | * | |
208 | * The returned time values are in internal time, ie to get trace time, the | |
209 | * time offset needs to be added to those values. | |
210 | * | |
211 | * @param start | |
212 | * The start time of the time range | |
213 | * @param end | |
214 | * End time of the range | |
215 | * @param nb | |
216 | * The number of steps in the x axis. | |
217 | * @return The time values (converted to double) to match every step. | |
218 | */ | |
5637b809 | 219 | protected static final double[] getXAxis(long start, long end, int nb) { |
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220 | |
221 | double timestamps[] = new double[nb]; | |
222 | long steps = (end - start); | |
223 | double step = steps / (double) nb; | |
224 | ||
225 | double curTime = 1; | |
226 | for (int i = 0; i < nb; i++) { | |
227 | timestamps[i] = curTime; | |
228 | curTime += step; | |
229 | } | |
230 | return timestamps; | |
231 | } | |
232 | ||
233 | /** | |
234 | * Set the values of the x axis. There is only one array of values for the x | |
235 | * axis for all series of a line chart so it needs to be set once here. | |
236 | * | |
237 | * @param xaxis | |
238 | * The values for the x axis. The values must be in internal | |
239 | * time, ie time offset have been subtracted from trace time | |
240 | * values. | |
241 | */ | |
242 | protected final void setXAxis(double[] xaxis) { | |
243 | fXValues = xaxis; | |
244 | } | |
245 | ||
246 | /** | |
247 | * Update the series data because the time range has changed. The x axis | |
248 | * values for this data update can be computed using the | |
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249 | * {@link TmfCommonXLineChartViewer#getXAxis(long, long, int)} method which |
250 | * will return a list of uniformely separated time values. | |
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251 | * |
252 | * Each series values should be set by calling the | |
253 | * {@link TmfCommonXLineChartViewer#setSeries(String, double[])}. | |
254 | * | |
255 | * This method is responsible for calling the | |
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256 | * {@link TmfCommonXLineChartViewer#updateDisplay()} when needed for the new |
257 | * values to be displayed. | |
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258 | * |
259 | * @param start | |
260 | * The start time of the range for which the get the data | |
261 | * @param end | |
262 | * The end time of the range | |
263 | * @param nb | |
264 | * The number of 'points' in the chart. | |
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265 | * @param monitor |
266 | * The progress monitor object | |
2e427755 | 267 | */ |
00968516 | 268 | protected abstract void updateData(long start, long end, int nb, IProgressMonitor monitor); |
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269 | |
270 | /** | |
271 | * Set the data for a given series of the graph. The series does not need to | |
272 | * be created before calling this, but it needs to have at least as many | |
273 | * values as the x axis. | |
274 | * | |
275 | * If the series does not exist, it will automatically be created at display | |
276 | * time, with the default values. | |
277 | * | |
278 | * @param seriesName | |
279 | * The name of the series for which to set the values | |
280 | * @param seriesValues | |
281 | * The array of values for the series | |
282 | */ | |
283 | protected void setSeries(String seriesName, double[] seriesValues) { | |
284 | if (fXValues.length > seriesValues.length) { | |
285 | throw new IllegalStateException(); | |
286 | } | |
287 | fSeriesValues.put(seriesName, seriesValues); | |
288 | } | |
289 | ||
290 | /** | |
291 | * Add a new series to the XY line chart. By default, it is a simple solid | |
292 | * line. | |
293 | * | |
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294 | * @param seriesName |
295 | * The name of the series to create | |
296 | * @return The series so that the concrete viewer can modify its properties | |
297 | * if required | |
298 | */ | |
299 | protected ILineSeries addSeries(String seriesName) { | |
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300 | ISeriesSet seriesSet = getSwtChart().getSeriesSet(); |
301 | int seriesCount = seriesSet.getSeries().length; | |
302 | ILineSeries series = (ILineSeries) seriesSet.createSeries(SeriesType.LINE, seriesName); | |
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303 | series.setVisible(true); |
304 | series.enableArea(false); | |
c85a741e | 305 | series.setLineStyle(LINE_STYLES[(seriesCount / (LINE_COLORS.length)) % LINE_STYLES.length]); |
2e427755 | 306 | series.setSymbolType(PlotSymbolType.NONE); |
c85a741e | 307 | series.setLineColor(Display.getDefault().getSystemColor(LINE_COLORS[seriesCount % LINE_COLORS.length])); |
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308 | return series; |
309 | } | |
310 | ||
311 | /** | |
312 | * Delete a series from the chart and its values from the viewer. | |
313 | * | |
314 | * @param seriesName | |
315 | * Name of the series to delete | |
316 | */ | |
317 | protected void deleteSeries(String seriesName) { | |
318 | ISeries series = getSwtChart().getSeriesSet().getSeries(seriesName); | |
319 | if (series != null) { | |
320 | getSwtChart().getSeriesSet().deleteSeries(series.getId()); | |
321 | } | |
322 | fSeriesValues.remove(seriesName); | |
323 | } | |
324 | ||
325 | /** | |
326 | * Update the chart's values before refreshing the viewer | |
327 | */ | |
328 | protected void updateDisplay() { | |
329 | Display.getDefault().asyncExec(new Runnable() { | |
330 | final TmfChartTimeStampFormat tmfChartTimeStampFormat = new TmfChartTimeStampFormat(getTimeOffset()); | |
331 | ||
332 | @Override | |
333 | public void run() { | |
334 | if (!getSwtChart().isDisposed()) { | |
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335 | double[] xValues = fXValues; |
336 | if (xValues.length < 1) { | |
337 | return; | |
338 | } | |
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339 | double maxy = DEFAULT_MAXY; |
340 | double miny = DEFAULT_MINY; | |
341 | for (Entry<String, double[]> entry : fSeriesValues.entrySet()) { | |
342 | ILineSeries series = (ILineSeries) getSwtChart().getSeriesSet().getSeries(entry.getKey()); | |
343 | if (series == null) { | |
344 | series = addSeries(entry.getKey()); | |
345 | } | |
3db04143 | 346 | series.setXSeries(xValues); |
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347 | /* Find the minimal and maximum values in this series */ |
348 | for (double value : entry.getValue()) { | |
349 | maxy = Math.max(maxy, value); | |
350 | miny = Math.min(miny, value); | |
351 | } | |
352 | series.setYSeries(entry.getValue()); | |
353 | } | |
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354 | if (maxy == DEFAULT_MAXY) { |
355 | maxy = 1.0; | |
356 | } | |
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357 | |
358 | IAxisTick xTick = getSwtChart().getAxisSet().getXAxis(0).getTick(); | |
359 | xTick.setFormat(tmfChartTimeStampFormat); | |
360 | ||
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361 | final double start = xValues[0]; |
362 | int lastX = xValues.length - 1; | |
363 | double end = (start == xValues[lastX]) ? start + 1 : xValues[lastX]; | |
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364 | getSwtChart().getAxisSet().getXAxis(0).setRange(new Range(start, end)); |
365 | getSwtChart().getAxisSet().getXAxis(0).adjustRange(); | |
366 | if (maxy > miny) { | |
367 | getSwtChart().getAxisSet().getYAxis(0).setRange(new Range(miny, maxy)); | |
368 | } | |
369 | getSwtChart().redraw(); | |
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370 | |
371 | if (isSendTimeAlignSignals()) { | |
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372 | // The width of the chart might have changed and its |
373 | // time axis might be misaligned with the other views | |
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374 | Point viewPos = TmfCommonXLineChartViewer.this.getParent().getParent().toDisplay(0, 0); |
375 | int axisPos = getSwtChart().toDisplay(0, 0).x + getPointAreaOffset(); | |
376 | int timeAxisOffset = axisPos - viewPos.x; | |
377 | TmfTimeViewAlignmentInfo timeAlignmentInfo = new TmfTimeViewAlignmentInfo(getControl().getShell(), viewPos, timeAxisOffset); | |
378 | TmfSignalManager.dispatchSignal(new TmfTimeViewAlignmentSignal(TmfCommonXLineChartViewer.this, timeAlignmentInfo, true)); | |
379 | } | |
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380 | } |
381 | } | |
382 | }); | |
383 | } | |
384 | ||
385 | /** | |
386 | * Create the series once the initialization of the viewer's data source is | |
387 | * done. Series do not need to be created before setting their values, but | |
388 | * if their appearance needs to be customized, this method is a good place | |
389 | * to do so. It is called only once per trace. | |
390 | */ | |
391 | protected void createSeries() { | |
392 | ||
393 | } | |
394 | ||
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395 | @Override |
396 | protected void clearContent() { | |
397 | getSwtChart().getAxisSet().getXAxis(0).getTick().setFormat(null); | |
398 | super.clearContent(); | |
399 | } | |
400 | ||
2e427755 | 401 | } |