analysis/org.eclipse.tracecompass.analysis.timing.ui/src/org/eclipse/tracecompass/internal/analysis/timing/ui/views/segmentstore/density/SimpleTooltipProvider.java

   1 /**********************************************************************
   2  * Copyright (c) 2015, 2016 Ericsson
   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 package org.eclipse.tracecompass.internal.analysis.timing.ui.views.segmentstore.density;
  10
  11 import java.text.Format;
  12 import java.text.MessageFormat;
  13
  14 import org.eclipse.jdt.annotation.Nullable;
  15 import org.eclipse.swt.events.MouseEvent;
  16 import org.eclipse.swt.events.MouseTrackListener;
  17 import org.eclipse.swt.graphics.Rectangle;
  18 import org.eclipse.tracecompass.analysis.timing.ui.views.segmentstore.SubSecondTimeWithUnitFormat;
  19 import org.eclipse.tracecompass.analysis.timing.ui.views.segmentstore.density.AbstractSegmentStoreDensityViewer;
  20 import org.swtchart.IAxis;
  21 import org.swtchart.IBarSeries;
  22 import org.swtchart.ISeries;
  23
  24 /**
  25  * Tool tip provider for density viewer. It displays the x and y value of the
  26  * current mouse position.
  27  *
  28  * @author Bernd Hufmann
  29  * @author Marc-Andre Laperle
  30  */
  31 public class SimpleTooltipProvider extends BaseMouseProvider implements MouseTrackListener {
  32
  33     private static final Format FORMAT = new SubSecondTimeWithUnitFormat();
  34
  35     /**
  36      * Constructor for a tool tip provider.
  37      *
  38      * @param densityViewer
  39      *            The parent density viewer
  40      */
  41     public SimpleTooltipProvider(AbstractSegmentStoreDensityViewer densityViewer) {
  42         super(densityViewer);
  43         register();
  44     }
  45
  46     @Override
  47     public final void register() {
  48         getChart().getPlotArea().addMouseTrackListener(this);
  49     }
  50
  51     @Override
  52     public final void deregister() {
  53         if (!getChart().isDisposed()) {
  54             getChart().getPlotArea().removeMouseTrackListener(this);
  55         }
  56     }
  57
  58     @Override
  59     public void mouseEnter(@Nullable MouseEvent e) {
  60     }
  61
  62     @Override
  63     public void mouseExit(@Nullable MouseEvent e) {
  64     }
  65
  66     @Override
  67     public void mouseHover(@Nullable MouseEvent e) {
  68         if (e == null || getChart().getAxisSet().getXAxes().length == 0 || getChart().getAxisSet().getYAxes().length == 0 || getDensityViewer().getControl().getSeriesSet().getSeries().length == 0) {
  69             return;
  70         }
  71         ISeries series = getDensityViewer().getControl().getSeriesSet().getSeries()[0];
  72         getChart().getPlotArea().setToolTipText(null);
  73         if (series instanceof IBarSeries) {
  74             IBarSeries barSeries = (IBarSeries) series;
  75             // Note: getBounds is broken in SWTChart 0.9.0
  76             Rectangle[] bounds = barSeries.getBounds();
  77
  78             if (barSeries.getXSeries().length < 2) {
  79                 return;
  80             }
  81             double delta = barSeries.getXSeries()[1] - barSeries.getXSeries()[0];
  82             for (int i = 0; i < bounds.length; i++) {
  83                 Rectangle rec = bounds[i];
  84                 if (rec == null) {
  85                     continue;
  86                 }
  87                 int start = rec.x;
  88                 int end = start + rec.width;
  89                 if (e.x >= start && e.x <= end) {
  90                     long x1 = (long) barSeries.getXSeries()[i];
  91                     long x2 = (long) (x1 + delta);
  92                     IAxis yAxis = getChart().getAxisSet().getYAxes()[0];
  93                     long y = Math.round(yAxis.getDataCoordinate(rec.y)) - 1;
  94                     if (y > 0) {
  95                         String toolTipText = MessageFormat.format(Messages.SimpleTooltipProvider_toolTipText, FORMAT.format(x1), FORMAT.format(x2), y);
  96                         getChart().getPlotArea().setToolTipText(toolTipText);
  97                     }
  98                     break;
  99                 }
 100             }
 101         }
 102     }
 103 }