perfsonar development work

Author: nina
Date: 2009-01-17 06:26:25 -0500 (Sat, 17 Jan 2009)
New Revision: 4888

Modified:
   
branches/perfsonarui/src/org/perfsonar/perfsonarui/ui/panels/ResponseChartPanel.java
Log:
allow zooming by mouse wheel for all charts

Modified: 
branches/perfsonarui/src/org/perfsonar/perfsonarui/ui/panels/ResponseChartPanel.java
===================================================================
--- 
branches/perfsonarui/src/org/perfsonar/perfsonarui/ui/panels/ResponseChartPanel.java
        2009-01-17 11:25:32 UTC (rev 4887)
+++ 
branches/perfsonarui/src/org/perfsonar/perfsonarui/ui/panels/ResponseChartPanel.java
        2009-01-17 11:26:25 UTC (rev 4888)
@@ -27,6 +27,8 @@
 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.LayoutManager;
+import java.awt.event.MouseWheelEvent;
+import java.awt.event.MouseWheelListener;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.text.BreakIterator;
@@ -37,6 +39,7 @@
 import java.util.ResourceBundle;
 
 import javax.swing.AbstractAction;
+import javax.swing.JComponent;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JPopupMenu;
@@ -131,6 +134,7 @@
                chart = createChart(psModel,ifDataset.getDatasets());
                chart.setAntiAlias(true);
                chartPanel = new ChartPanel(chart);
+               addListener(chartPanel);
 
                chartPanel.setDomainZoomable(true);
                chartPanel.setRangeZoomable(false);
@@ -217,5 +221,37 @@
         this.title = title;
         chart.setTitle(title);
     }
+    
+    public void addListener(ChartPanel chartPanel) {
+        chartPanel.addMouseWheelListener(new MouseWheelListener() {
 
+                   public void mouseWheelMoved(MouseWheelEvent e) {
+                       if (e.getScrollType() != 
MouseWheelEvent.WHEEL_UNIT_SCROLL) return;
+                       if (e.getWheelRotation()< 0) 
increaseZoom((ChartPanel)e.getComponent(), true);
+                       else                          
decreaseZoom((ChartPanel)e.getComponent(), true);
+                   }
+                  
+                   public synchronized void increaseZoom(JComponent chart, 
boolean saveAction){
+                       ChartPanel ch = (ChartPanel)chart;
+                       zoomChartAxis(ch, true);
+                   }
+                  
+                   public synchronized void decreaseZoom(JComponent chart, 
boolean saveAction){
+                       ChartPanel ch = (ChartPanel)chart;
+                       zoomChartAxis(ch, false);
+                   }
+                  
+                   private void zoomChartAxis(ChartPanel chartP, boolean 
increase){             
+                       int width = chartP.getMaximumDrawWidth() - 
chartP.getMinimumDrawWidth();
+                       int height = chartP.getMaximumDrawHeight() - 
chartP.getMinimumDrawWidth();       
+                       if(increase){
+                          chartP.zoomInBoth(width/2, height/2);
+                       }else{
+                          chartP.zoomOutBoth(width/2, height/2);
+                       }
+
+                   }
+        });
+    }
+
 }