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

   1 /*******************************************************************************
   2  * Copyright (c) 2011, 2012 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  *   Bernd Hufmann - Changed to updated histogram data model
  12  *   Francois Chouinard - Moved from LTTng to TMF
  13  *******************************************************************************/
  14
  15 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  16
  17 import org.eclipse.swt.widgets.Composite;
  18
  19 /**
  20  * <b><u>TimeRangeHistogram</u></b>
  21  * <p>
  22  * A basic histogram with the following additional features:
  23  * <ul>
  24  * <li>zoom in: mouse wheel up (or forward)
  25  * <li>zoom out: mouse wheel down (or backward)
  26  * </ul>
  27  */
  28 public class TimeRangeHistogram extends Histogram {
  29
  30     // ------------------------------------------------------------------------
  31     // Attributes
  32     // ------------------------------------------------------------------------
  33
  34     HistogramZoom fZoom = null;
  35
  36     // ------------------------------------------------------------------------
  37     // Constructor
  38     // ------------------------------------------------------------------------
  39
  40     public TimeRangeHistogram(HistogramView view, Composite parent) {
  41         super(view, parent);
  42         fZoom = new HistogramZoom(this, fCanvas, getStartTime(), getTimeLimit());
  43     }
  44
  45     // ------------------------------------------------------------------------
  46     // Operations
  47     // ------------------------------------------------------------------------
  48
  49     @Override
  50     public void updateTimeRange(long startTime, long endTime) {
  51         ((HistogramView) fParentView).updateTimeRange(startTime, endTime);
  52     }
  53
  54     @Override
  55     public synchronized void clear() {
  56         if (fZoom != null)
  57             fZoom.stop();
  58         super.clear();
  59     }
  60
  61     public synchronized void setTimeRange(long startTime, long duration) {
  62         fZoom.setNewRange(startTime, duration);
  63     }
  64
  65     @Override
  66     public void setFullRange(long startTime, long endTime) {
  67         long currentFirstEvent = getStartTime();
  68         fZoom.setFullRange((currentFirstEvent == 0) ? startTime : currentFirstEvent, endTime);
  69     }
  70
  71 }