org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/histogram/TimeRangeHistogram.java

   1 /*******************************************************************************
   2  *
   3  * Copyright (c) 2011 Ericsson
   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  *   Francois Chouinard - Initial API and implementation
  11  *   Bernd Hufmann - Changed to updated histogram data model
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.lttng.ui.views.histogram;
  15
  16 import org.eclipse.swt.widgets.Composite;
  17
  18 /**
  19  * <b><u>TimeRangeHistogram</u></b>
  20  * <p>
  21  * A basic histogram with the following additional features:
  22  * <ul>
  23  * <li>zoom in: mouse wheel up (or forward)
  24  * <li>zoom out: mouse wheel down (or backward)
  25  * </ul>
  26  */
  27 public class TimeRangeHistogram extends Histogram {
  28
  29     // ------------------------------------------------------------------------
  30     // Attributes
  31     // ------------------------------------------------------------------------
  32
  33     HistogramZoom fZoom;
  34
  35     // ------------------------------------------------------------------------
  36     // Constructor
  37     // ------------------------------------------------------------------------
  38
  39     public TimeRangeHistogram(HistogramView view, Composite parent) {
  40         super(view, parent);
  41         fZoom = new HistogramZoom(this, fCanvas, getStartTime(), getTimeLimit());
  42     }
  43
  44     // ------------------------------------------------------------------------
  45     // Operations
  46     // ------------------------------------------------------------------------
  47
  48     @Override
  49     public void updateTimeRange(long startTime, long endTime) {
  50         ((HistogramView) fParentView).updateTimeRange(startTime, endTime);
  51     }
  52
  53     @Override
  54     public synchronized void clear() {
  55         if (fZoom != null)
  56             fZoom.stop();
  57         super.clear();
  58     }
  59
  60     public synchronized void setTimeRange(long startTime, long duration) {
  61         fZoom.setNewRange(startTime, duration);
  62     }
  63
  64     public void setFullRange(long startTime, long endTime) {
  65         long currentFirstEvent = getStartTime();
  66         fZoom.setFullRange((currentFirstEvent == 0) ? startTime : currentFirstEvent, endTime);
  67     }
  68
  69 }