tim/prune/gui/GenericChart.java

   1 package tim.prune.gui;
   2
   3 import java.awt.Color;
   4 import java.awt.Dimension;
   5 import java.awt.Graphics;
   6 import java.awt.event.MouseEvent;
   7 import java.awt.event.MouseListener;
   8
   9 import tim.prune.I18nManager;
  10 import tim.prune.data.TrackInfo;
  11
  12
  13 /**
  14  * Generic chart component to form baseclass for map and profile charts
  15  */
  16 public abstract class GenericChart extends GenericDisplay implements MouseListener
  17 {
  18         protected Dimension MINIMUM_SIZE = new Dimension(200, 250);
  19         protected static final int BORDER_WIDTH = 8;
  20
  21         // Colours
  22         private static final Color COLOR_BORDER_BG   = Color.WHITE;
  23         private static final Color COLOR_CHART_BG    = Color.WHITE;
  24         private static final Color COLOR_CHART_LINE  = Color.BLACK;
  25         private static final Color COLOR_NODATA_TEXT = Color.GRAY;
  26
  27
  28         /**
  29          * Constructor
  30          * @param inTrackInfo track info object
  31          */
  32         protected GenericChart(TrackInfo inTrackInfo)
  33         {
  34                 super(inTrackInfo);
  35         }
  36
  37         /**
  38          * Override minimum size method to restrict map
  39          */
  40         public Dimension getMinimumSize()
  41         {
  42                 return MINIMUM_SIZE;
  43         }
  44
  45         /**
  46          * Override paint method to draw map
  47          * @param inG graphics object
  48          */
  49         public void paint(Graphics inG)
  50         {
  51                 super.paint(inG);
  52                 int width = getWidth();
  53                 int height = getHeight();
  54                 // border background
  55                 inG.setColor(COLOR_BORDER_BG);
  56                 inG.fillRect(0, 0, width, height);
  57                 if (width < 2*BORDER_WIDTH || height < 2*BORDER_WIDTH) return;
  58                 // blank graph area, with line border
  59                 inG.setColor(COLOR_CHART_BG);
  60                 inG.fillRect(BORDER_WIDTH, BORDER_WIDTH, width - 2*BORDER_WIDTH, height-2*BORDER_WIDTH);
  61                 // Display message if no data to be displayed
  62                 if (_track == null || _track.getNumPoints() <= 0)
  63                 {
  64                         inG.setColor(COLOR_NODATA_TEXT);
  65                         inG.drawString(I18nManager.getText("display.nodata"), 50, height/2);
  66                 }
  67                 else {
  68                         inG.setColor(COLOR_CHART_LINE);
  69                         inG.drawRect(BORDER_WIDTH, BORDER_WIDTH, width - 2*BORDER_WIDTH, height-2*BORDER_WIDTH);
  70                 }
  71         }
  72
  73
  74         /**
  75          * Method to inform map that data has changed
  76          */
  77         public void dataUpdated(byte inUpdateType)
  78         {
  79                 repaint();
  80         }
  81
  82
  83         /**
  84          * mouse enter events ignored
  85          */
  86         public void mouseEntered(MouseEvent e)
  87         {}
  88
  89         /**
  90          * mouse exit events ignored
  91          */
  92         public void mouseExited(MouseEvent e)
  93         {}
  94
  95         /**
  96          * ignore mouse pressed for now too
  97          */
  98         public void mousePressed(MouseEvent e)
  99         {}
 100
 101         /**
 102          * and also ignore mouse released
 103          */
 104         public void mouseReleased(MouseEvent e)
 105         {}
 106 }