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

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