Package com.meapsoft.visualizer

Source Code of com.meapsoft.visualizer.LineGraphRenderer

/*
*  Copyright 2006-2007 Columbia University.
*
*  This file is part of MEAPsoft.
*
*  MEAPsoft is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License version 2 as
*  published by the Free Software Foundation.
*
*  MEAPsoft is distributed in the hope that it will be useful, but
*  WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
*  General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with MEAPsoft; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
*  02110-1301 USA
*
*  See the file "COPYING" for the text of the license.
*/

/*
* Created on Nov 15, 2006
*
* various ways of viewing EDL files
*
*/
package com.meapsoft.visualizer;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.util.Vector;

import javax.swing.BoxLayout;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;

import com.meapsoft.EDLFile;
import com.meapsoft.FeatFile;


/**
* @author douglas repetto
*
*/

public class LineGraphRenderer extends Renderer
{   
  JComboBox sOptions;
  JCheckBox connectOption;
  boolean connect;
 
  double currXMulti = 0.0;
  double currHeight = 0.0;
 
  public LineGraphRenderer(FeatFile featFile, EDLFile eDLFile)
  {
    super(featFile, eDLFile, "LineGraph");
  }

  public LineGraphRenderer(Renderer r)
  {
    super(r);
    //have to do this so we're not stuck with invalid
    //multipliers from another renderer
    updateColorMultipliers();
  }

  public void draw(BufferedImage image, int width, int height)
  { 
    //System.out.println("width: " + width + " height: " + height);
    //height *= .5;
    int numChunks = events.size();
   
    //set up scaling factors
    ChunkVisInfo lastChunk = (ChunkVisInfo) events.elementAt(numChunks - 1);
    double xMulti = width/(lastStartTime + lastChunk.length);
   
    Graphics graphics = image.getGraphics();
    graphics.setColor(Color.white);
    graphics.fillRect(0,0,width,height);
   
    Point[][] previousPoints = new Point[numChunks][numFeatures];
   
    int colorMulti = numColors/numFeatures;
   
    for (int i = 0; i < numChunks; i++)
    {
      ChunkVisInfo cVI = (ChunkVisInfo) events.elementAt(i);
     
      int[] featNum = {0};
     
      for (int j = 0; j < numFeatures; j++)
      {
        double features[] = cVI.getFeatures(featNum);
        double featureValue = features[0] - lowestFeatureValue[j];

        featNum[0] += elementsPerFeature[j];

        //double colorIndex = featureValue * colorMultipliers[j];
       
        int colorIndex = j * colorMulti;
       
       
        Color featureColor = colormap.table[(int)colorIndex];
       
        if (!cVI.selected)
          featureColor = featureColor.darker().darker().darker();
       
        graphics.setColor(featureColor);
       
        int blobSize = (int)Math.round(width/numChunks) - 2;
        if (blobSize <= 1)
          blobSize = 2;
         
        double yMulti = (height - blobSize)/(highestFeatureValue[j] - lowestFeatureValue[j]);

        //draw feats
        int x = (int)(Math.round(cVI.startTime * xMulti));
        //or draw EDL
        if (sOptions.getSelectedIndex() == 1)
          x = (int)(Math.round(cVI.dstTime * xMulti));
        int y = (int)(Math.round(featureValue * yMulti));
       
        graphics.fillOval(x, y, blobSize, blobSize);
       
        if (i > 0 && connectOption.isSelected())
        {
          Point pP = previousPoints[i-1][j];
          if (pP != null)
          {
            int pX = pP.x + (blobSize/2);
            int pY = pP.y + (blobSize/2);
            graphics.setColor(featureColor.brighter());
            graphics.drawLine(x + (blobSize/2), y + (blobSize/2), pX, pY);
          }
        }
        previousPoints[i][j] = new Point(x, y);
       
        //record our position
        if (j == 0)
        {
          if (sOptions.getSelectedIndex() == 0)
          {
            cVI.xFeat = x;
            cVI.yFeat = y;
          }
          else
          {
            cVI.xEDL = x;
            cVI.yEDL = y;
          }
          cVI.width = blobSize;
          cVI.height = blobSize;
        }
      }
    }
   
    currHeight = height;
   
    if (dragRect != null)
    {
      graphics.setColor(Color.black);
      graphics.drawRect(dragRect.x, dragRect.y, dragRect.width, dragRect.height);
    }
  }

   
  public Vector getChunkVisInfosForPoint(Point p)
  { 
    Vector chunks = new Vector();
   
    for (int i = 0; i < events.size(); i++)
    {
      ChunkVisInfo c = (ChunkVisInfo) events.elementAt(i);

      if (sOptions.getSelectedIndex() == 0)
      {
        if (p.x >= c.xFeat && p.x <= (c.xFeat + c.width))
          chunks.add(c);
      }
      else
      {
        if (p.x >= c.xEDL && p.x <= (c.xEDL + c.width))
          chunks.add(c);
      }
   
    }

    return chunks;
  }
   
  public int getFeatureNumberForPoint(Point p)
  {
    int featureNumber = -1;
   
    if (featFile != null)
    {
      for (int i = 0; i < events.size(); i++)
      {
        ChunkVisInfo cVI = (ChunkVisInfo) events.elementAt(i);
       
        if (sOptions.getSelectedIndex() == 0)
        {
          if (p.x >= cVI.xFeat && p.x <= (cVI.xFeat + cVI.width))
          {
            int[] featNum = {0};
     
            for (int j = 0; j < numFeatures; j++)
            {
              double features[] = cVI.getFeatures(featNum);
              double featureValue = features[0] - lowestFeatureValue[j];
 
              featNum[0] += elementsPerFeature[j];
 
              double yMulti = currHeight/(highestFeatureValue[j] - lowestFeatureValue[j]);
              int y = (int)(Math.round(featureValue * yMulti));
             
              if (p.y >= y && p.y <= y + cVI.height)
                featureNumber = j;
            }
          }
        }
        else
        {
          if (p.x >= cVI.xEDL && p.x <= (cVI.xEDL + cVI.width))
          {
            int[] featNum = {0};
     
            for (int j = 0; j < numFeatures; j++)
            {
              double features[] = cVI.getFeatures(featNum);
              double featureValue = features[0] - lowestFeatureValue[j];
 
              featNum[0] += elementsPerFeature[j];
 
              double yMulti = currHeight/(highestFeatureValue[j] - lowestFeatureValue[j]);
              int y = (int)(Math.round(featureValue * yMulti));
             
              if (p.y >= y && p.y <= y + cVI.height)
                featureNumber = j;
            }
          }
        }
      }
    }
   
    return featureNumber;
  }
 
  public String getFeatureNameForPoint(Point p)
  {
    String featureName = "i don't know!";
   
    int whichFeature = getFeatureNumberForPoint(p);
   
    if (whichFeature != -1)
    {
      String fullFeatureName = (String) featFile.featureDescriptions.elementAt(whichFeature);
      //we're splitting on "." but have to use an escape sequence!
      String[] chunks = fullFeatureName.split("\\.");
      featureName = chunks[chunks.length-1];
    }
     
    return featureName; 
  }

  public double getFeatureValueForPoint(Point p)
  {
    double value = 0.0;
   
    int whichFeature = getFeatureNumberForPoint(p);
   
    if (whichFeature != -1)
    {
      for (int i = 0; i < events.size(); i++)
      {
        ChunkVisInfo cVI = (ChunkVisInfo) events.elementAt(i);
       
        if (sOptions.getSelectedIndex() == 0)
        {
          if (p.x >= cVI.xFeat && p.x <= (cVI.xFeat + cVI.width))
          {
            if (p.y >= cVI.yFeat && p.y <= (cVI.yFeat + cVI.height))
            {
              int[] featNum = {0};
           
              for (int j = 0; j < whichFeature; j++)
                featNum[0] += elementsPerFeature[j];
              value = cVI.getFeatures(featNum)[0];
              return value;
            }
          }
        }
        else
        {
          if (p.x >= cVI.xEDL && p.x <= (cVI.xEDL + cVI.width))
          {
            if (p.y >= cVI.yEDL && p.y <= (cVI.yEDL + cVI.height))
            {
              int[] featNum = {0};
           
              for (int j = 0; j < whichFeature; j++)
                featNum[0] += elementsPerFeature[j];
              value = cVI.getFeatures(featNum)[0];
              return value;
            }
          }
        }
      }
    }
   
    return value;
  }
 
  public void rangeFilterSelectionChanged()
  {
  }
 
  public void setDragRect(Rectangle r, boolean dS)
  {
    dragRect = r;
    dragShift = dS;
   
    if (!dragShift)
    {
      selectNone();
    }
   
    for (int i = 0; i < events.size(); i++)
    {
      ChunkVisInfo cVI = (ChunkVisInfo)events.elementAt(i);
      Rectangle chunkRect = null;
     
      if (sOptions.getSelectedIndex() == 0)
      {
        chunkRect = new Rectangle(cVI.xFeat, cVI.yFeat, cVI.width, cVI.height);
      }
      else
      {
        chunkRect = new Rectangle(cVI.xEDL, cVI.yEDL, cVI.width, cVI.height);
      }
     
      if ((dragRect.x >= chunkRect.x &&
        dragRect.x <= chunkRect.x + chunkRect.width) ||
        (dragRect.x + dragRect.width >= chunkRect.x &&
        dragRect.x + dragRect.width <= chunkRect.x + chunkRect.width) ||
        (dragRect.x <= chunkRect.x &&
        dragRect.x + dragRect.width >= chunkRect.x + chunkRect.width))
        cVI.selected = true;
    }
   
    dragRect = null;
    dragShift = false;
   
    drawingPanel.repaint()
  }
  /*
  public void actionPerformed(ActionEvent arg0)
  {   
    Object source = arg0.getSource();
    String command = arg0.getActionCommand();
   
    super.actionPerformed(arg0);
  }
  */
  public JPanel buildGUI(Color bgColor)
  {
   
    JPanel panel = super.buildGUI(bgColor);
   
    JPanel cSPanel = new JPanel();
    cSPanel.setBackground(bgColor);
    cSPanel.setLayout(new BoxLayout(cSPanel, BoxLayout.Y_AXIS));
   
    connectOption = new JCheckBox("connect dots");
    connectOption.setBackground(bgColor);
    connectOption.setActionCommand("connect");
    connectOption.addActionListener(this);
   
    cSPanel.add(connectOption);

    JLabel sCL = new JLabel("show: ");
    sCL.setBackground(bgColor);
    cSPanel.add(sCL);
   
    String[] showOptions = {"feat file", "EDL file"};
   
    sOptions = new JComboBox(showOptions);
    sOptions.setBackground(bgColor);
    sOptions.setActionCommand("sOptions");
    sOptions.addActionListener(this);
    cSPanel.add(sOptions);
   
    controlsPanel.add(cSPanel);
   
    return panel;
  }


}


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