libjava/javax/swing/plaf/basic/BasicScrollPaneUI.java

   1 package javax.swing.plaf.basic;
   2
   3
   4 import javax.swing.plaf.*;
   5 import javax.swing.*;
   6 import java.awt.*;
   7
   8
   9
  10 public class BasicScrollPaneUI extends ScrollPaneUI
  11 {
  12     int min_w = 50;
  13     int min_h = 50;
  14
  15     public static ComponentUI createUI(final JComponent c)
  16     {
  17         return new BasicScrollPaneUI();
  18     }
  19
  20
  21     public void installUI(final JComponent c)
  22     {
  23         super.installUI(c);
  24     }
  25
  26
  27     public Dimension getPreferredSize(JComponent c)
  28     {
  29         JScrollPane p = (JScrollPane ) c;
  30
  31         Dimension d = new Dimension(min_w,
  32                                     min_h);
  33
  34         Dimension a = p.getViewport().getPreferredSize();
  35
  36         if (a != null)
  37             {
  38                 d.width = Math.max(d.width, a.width);
  39                 d.height = Math.max(d.height, a.height);
  40             }
  41
  42
  43         System.out.println("BasicScrollPaneUI->preff->"+d);
  44         return d;
  45     }
  46
  47     public void paint(Graphics g, JComponent c)
  48     {
  49         System.out.println("BasicScrollPaneUI->paint()->"+c);
  50
  51         JScrollPane p = (JScrollPane ) c;
  52         p.getViewport().paint(g);
  53     }
  54 }
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