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  1. JDK
  2. JDK-7174540

[macosx] Custom painted Window with height less than 8px are incorrectly drawn

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    • Subcomponent:
    • CPU:
      x86
    • OS:
      os_x

      Description

      FULL PRODUCT VERSION :
      1.7.0_04-b21

      ADDITIONAL OS VERSION INFORMATION :
      Mac OSX 10.7.4

      A DESCRIPTION OF THE PROBLEM :
      When you create a java.awt.Window and override paint it doesn't draw correctly unless the window height is at least 8px high.

      REGRESSION. Last worked in version 6u31

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Compile and run this test class

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      On Java6 for mac (and java6 and java7 for windows) the result is a blue line (window) with 300px width and 3px height.
      ACTUAL -
      On Java7 for mac the result is a 300x3 window with some blue and some garbage pixels.

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      public class TestWindowForMacJava7 {
          public static void main(String[] args) {
              EventQueue.invokeLater(new Runnable() {
                  public void run() {
                      Frame f = new Frame();
                      f.setLocation(0, 0);
                      f.setSize(0, 0);
                      f.setUndecorated(true);
                      f.setVisible(true);

                      Window w = new Window(f) {
                          public void paint(Graphics g) {
                              g.setColor(Color.BLUE);
                              g.fillRect(0, 0, getWidth(), getHeight());
                          }
                      };

                      w.setLocation(100, 100);
                      w.setSize(300, 3);
                      w.setAlwaysOnTop(true);
                      w.setVisible(true);
                  }
              });
          }
      }
      ---------- END SOURCE ----------

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            Reporter:
            webbuggrp Webbug Group
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