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5791dcef | 1 | /********************************************************************** |
60ae41e1 | 2 | * Copyright (c) 2013, 2014 Ericsson |
5791dcef BH |
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 | * Bernd Hufmann - Initial API and implementation | |
11 | **********************************************************************/ | |
12 | package org.eclipse.linuxtools.tmf.ui.viewers.xycharts; | |
13 | ||
14 | import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp; | |
15 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; | |
16 | import org.eclipse.swt.events.MouseEvent; | |
17 | import org.eclipse.swt.events.MouseTrackListener; | |
18 | import org.swtchart.IAxis; | |
19 | ||
20 | /** | |
21 | * Tool tip provider for TMF chart viewer. It displays the x and y | |
22 | * value of the current mouse position. | |
23 | * | |
24 | * @author Bernd Hufmann | |
25 | * @since 3.0 | |
26 | */ | |
27 | public class TmfSimpleTooltipProvider extends TmfBaseProvider implements MouseTrackListener { | |
28 | ||
29 | // ------------------------------------------------------------------------ | |
30 | // Constructors | |
31 | // ------------------------------------------------------------------------ | |
32 | /** | |
33 | * Constructor for a tool tip provider. | |
34 | * | |
35 | * @param tmfChartViewer | |
36 | * The parent chart viewer | |
37 | */ | |
38 | public TmfSimpleTooltipProvider(ITmfChartTimeProvider tmfChartViewer) { | |
39 | super(tmfChartViewer); | |
40 | register(); | |
41 | } | |
42 | ||
43 | // ------------------------------------------------------------------------ | |
44 | // TmfBaseProvider | |
45 | // ------------------------------------------------------------------------ | |
46 | @Override | |
47 | public void register() { | |
48 | getChart().getPlotArea().addMouseTrackListener(this); | |
49 | } | |
50 | ||
51 | @Override | |
52 | public void deregister() { | |
53 | if ((getChartViewer().getControl() != null) && !getChartViewer().getControl().isDisposed()) { | |
54 | getChart().getPlotArea().removeMouseTrackListener(this); | |
55 | } | |
56 | } | |
57 | ||
58 | @Override | |
59 | public void refresh() { | |
60 | // nothing to do | |
61 | } | |
62 | ||
63 | // ------------------------------------------------------------------------ | |
64 | // MouseTrackListener | |
65 | // ------------------------------------------------------------------------ | |
66 | @Override | |
67 | public void mouseEnter(MouseEvent e) { | |
68 | } | |
69 | ||
70 | @Override | |
71 | public void mouseExit(MouseEvent e) { | |
72 | } | |
73 | ||
74 | @Override | |
75 | public void mouseHover(MouseEvent e) { | |
76 | if (getChartViewer().getWindowDuration() == 0) { | |
77 | return; | |
78 | } | |
79 | ||
80 | IAxis xAxis = getChart().getAxisSet().getXAxis(0); | |
81 | IAxis yAxis = getChart().getAxisSet().getYAxis(0); | |
82 | ||
83 | double xCoordinate = xAxis.getDataCoordinate(e.x); | |
84 | double yCoordinate = yAxis.getDataCoordinate(e.y); | |
85 | ||
86 | ITmfChartTimeProvider viewer = getChartViewer(); | |
87 | ||
88 | /* set tooltip of current data point */ | |
89 | StringBuffer buffer = new StringBuffer(); | |
90 | buffer.append("x="); //$NON-NLS-1$ | |
91 | buffer.append(new TmfTimestamp((long) xCoordinate + viewer.getTimeOffset(), ITmfTimestamp.NANOSECOND_SCALE).toString()); | |
92 | buffer.append("\n"); //$NON-NLS-1$ | |
93 | buffer.append("y="); //$NON-NLS-1$ | |
94 | buffer.append((long) yCoordinate); | |
95 | getChart().getPlotArea().setToolTipText(buffer.toString()); | |
96 | } | |
97 | } |