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  1. JDK
  2. JDK-6235699

BasicProgressBarUI throws an exception

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    Details

    • Subcomponent:
    • Resolved In Build:
      b46
    • CPU:
      x86
    • OS:
      windows_2000

      Description

      FULL PRODUCT VERSION :
      java version "1.5.0_01"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_01-b08)
      Java HotSpot(TM) Client VM (build 1.5.0_01-b08, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Windows 2000 SP4

      A DESCRIPTION OF THE PROBLEM :
      Resizing JFrame with JProgressBar to zero by dragging a border cause an IllegalArgumentException exception in BasicStroke object constructor...

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      run an example.
      drag a bottom side of the frame up to minimize it to header only.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      No exception.
      ACTUAL -
      Failed to paint so some artifacts occur

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: negat
      ive width
              at java.awt.BasicStroke.<init>(BasicStroke.java:181)
              at javax.swing.plaf.basic.BasicProgressBarUI.paintDeterminate(BasicProgr
      essBarUI.java:596)
              at javax.swing.plaf.metal.MetalProgressBarUI.paintDeterminate(MetalProgr
      essBarUI.java:45)
              at javax.swing.plaf.basic.BasicProgressBarUI.paint(BasicProgressBarUI.ja
      va:352)
              at javax.swing.plaf.ComponentUI.update(ComponentUI.java:142)
              at javax.swing.JComponent.paintComponent(JComponent.java:740)
              at javax.swing.JComponent.paint(JComponent.java:1003)
              at javax.swing.JComponent.paintChildren(JComponent.java:840)
              at javax.swing.JComponent.paint(JComponent.java:1012)
              at javax.swing.JComponent.paintChildren(JComponent.java:840)
              at javax.swing.JComponent.paint(JComponent.java:1012)
              at javax.swing.JLayeredPane.paint(JLayeredPane.java:559)
              at javax.swing.JComponent.paintChildren(JComponent.java:840)
              at javax.swing.JComponent.paint(JComponent.java:1012)
              at javax.swing.JComponent.paintWithOffscreenBuffer(JComponent.java:4930)

              at javax.swing.JComponent.paintDoubleBuffered(JComponent.java:4883)
              at javax.swing.JComponent._paintImmediately(JComponent.java:4826)
              at javax.swing.JComponent.paintImmediately(JComponent.java:4633)
              at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:451)

              at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(System
      EventQueueUtilities.java:114)
              at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
              at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
              at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
      read.java:234)
              at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
      ad.java:163)
              at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)

              at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)

              at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      package com.dim;

      import javax.swing.*;
      import java.awt.*;

      public class JProgressBarTest extends JFrame
      {
        public JProgressBarTest()
        {
          GridBagLayout g = new GridBagLayout();
          GridBagConstraints c = new GridBagConstraints();

          setLayout(g);

          c.weighty = 1.0;

          JProgressBar bar = new JProgressBar();
          g.setConstraints(bar, c);
          add(bar);

          setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

          pack();
          setVisible(true);
        }

        public static void main(String[] args)
        {
          Toolkit.getDefaultToolkit().setDynamicLayout(true);

          new JProgressBarTest();
        }
      }

      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      removing "c.weighty = 1.0" helps.

      *************************
      in javax.swing.plaf.basic.BasicProgressBarUI.java :

          protected void paintDeterminate(Graphics g, JComponent c) {
              if (!(g instanceof Graphics2D)) {
                  return;
              }
       
      Insets b = progressBar.getInsets(); // area for border
      int barRectWidth = progressBar.getWidth() - (b.right + b.left);
      int barRectHeight = progressBar.getHeight() - (b.top + b.bottom);
       
              int cellLength = getCellLength();
              int cellSpacing = getCellSpacing();
      // amount of progress to draw
      int amountFull = getAmountFull(b, barRectWidth, barRectHeight);

              Graphics2D g2 = (Graphics2D)g;
      g2.setColor(progressBar.getForeground());
       
      if (progressBar.getOrientation() == JProgressBar.HORIZONTAL) {
      // draw the cells
      if (cellSpacing == 0 && amountFull > 0) {
                      // draw one big Rect because there is no space between cells
                      g2.setStroke(new BasicStroke((float)barRectHeight,
                              BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
      ...

      as you can see

      int barRectHeight = progressBar.getHeight() - (b.top + b.bottom);

      could be negative and it generates an exception calling

      g2.setStroke(new BasicStroke((float)barRectHeight,
            BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
      *****************************
      ###@###.### 2005-03-03 17:45:43 GMT

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            Assignee:
            alexp Alexander Potochkin (Inactive)
            Reporter:
            gmanwanisunw Girish Manwani (Inactive)
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              Updated:
              Resolved:
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