org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/histogram/HistogramScaledData.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 - Added setter and getter
  12  *   Francois Chouinard - Moved from LTTng to TMF
  13  *******************************************************************************/
  14
  15 package org.eclipse.linuxtools.tmf.ui.views.histogram;
  16
  17 import java.util.Arrays;
  18
  19 /**
  20  * <b><u>HistogramScaledData</u></b>
  21  * <p>
  22  * Convenience class/struct for scaled histogram data.
  23  */
  24 public class HistogramScaledData {
  25
  26     // ------------------------------------------------------------------------
  27     // Constants
  28     // ------------------------------------------------------------------------
  29
  30     public static final int OUT_OF_RANGE_BUCKET = -1;
  31
  32     // ------------------------------------------------------------------------
  33     // Attributes
  34     // ------------------------------------------------------------------------
  35
  36     public int fWidth;
  37     public int fHeight;
  38     public int fBarWidth;
  39     public int[] fData;
  40     public long fBucketDuration;
  41     public long fMaxValue;
  42     public int fCurrentBucket;
  43     public int fLastBucket;
  44     public double fScalingFactor;
  45     public long fFirstBucketTime;
  46     public long fFirstEventTime;
  47
  48     // ------------------------------------------------------------------------
  49     // Constructor
  50     // ------------------------------------------------------------------------
  51
  52     public HistogramScaledData(int width, int height, int barWidth) {
  53         fWidth = width;
  54         fHeight = height;
  55         fBarWidth = barWidth;
  56         fData = new int[width/fBarWidth];
  57         Arrays.fill(fData, 0);
  58         fBucketDuration = 1;
  59         fMaxValue = 0;
  60         fCurrentBucket = 0;
  61         fLastBucket = 0;
  62         fScalingFactor = 1;
  63         fFirstBucketTime = 0;
  64     }
  65
  66     public HistogramScaledData(HistogramScaledData other) {
  67         fWidth = other.fWidth;
  68         fHeight = other.fHeight;
  69         fBarWidth = other.fBarWidth;
  70         fData = Arrays.copyOf(other.fData, fWidth);
  71         fBucketDuration = other.fBucketDuration;
  72         fMaxValue = other.fMaxValue;
  73         fCurrentBucket = other.fCurrentBucket;
  74         fLastBucket = other.fLastBucket;
  75         fScalingFactor = other.fScalingFactor;
  76         fFirstBucketTime = other.fFirstBucketTime;
  77     }
  78
  79     // ------------------------------------------------------------------------
  80     // Setter and Getter
  81     // ------------------------------------------------------------------------
  82
  83     public long getFirstBucketTime() {
  84         return fFirstBucketTime;
  85     }
  86
  87     public void setFirstBucketTime(long firstEventTime) {
  88         fFirstBucketTime = firstEventTime;
  89     }
  90
  91     public long getLastBucketTime() {
  92         return getBucketStartTime(fLastBucket);
  93     }
  94
  95     public long getBucketStartTime(int index) {
  96         return fFirstBucketTime + index * fBucketDuration;
  97     }
  98
  99     public long getBucketEndTime(int index) {
 100         return getBucketStartTime(index) + fBucketDuration;
 101     }
 102
 103 }