Public bug reported:
In Java applications, the functions to set and get window dimensions and
position do not work as expected. This problem is only observed in Unity
but not gnome, Win., etc.
Details:
* Call setSize(200, 200) and setLocation(300,400) for a JDialog object.
* If you call getSize() and getLocation() directly after making the
JDialog visible, the result will be (200,200) and (300,400). Calling
getSize() and getLocation() again, a split second later, the result is
now (200,200) and (301,428). In both cases, the values are wrong, the
size and location is actually (202,229) and (300,400) as shown by a
screen capture.
Consequences:
* If the dialog is designed to reach to the bottom of the screen, the
lower end will be cut off about 30 pixel, so the window needs to be
moved by the user each time to see the lower button row (e.g. settings
dialog in netbeans on medium resolution screen).
* In applications that save and restore window position and size, the
window will move down 28 pixel each time it is opened an closed (e.g.
JOSM, preference dialog).
Expected behavior:
* The result of getLocation() should be constant for one window unless
the user moves the window
* setSize(dx,dy) should not set the size of the content pane, but the
size of the entire window, including window decorations
* be consistent for all Window objects, e.g. in the attached sample, the
JFrame works correctly, but the JDialog shows the described bug
Output of the sample code (press button "click", then press button
"click2"):
dlg.getLocationOnScreen()=java.awt.Point[x=300,y=400]
dlg.getLocationOnScreen()=java.awt.Point[x=301,y=428]
Note: Both getLocation() and getLocationOnScreen() return the same
values.
Observed for the following Java versions:
java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.5) (6b24-1.11.5-0ubuntu1~12.10.1)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
and
java version "1.7.0_09"
OpenJDK Runtime Environment (IcedTea7 2.3.4) (7u9-2.3.4-0ubuntu1.12.10.1)
OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)
Ubuntu 12.10
unity-6.12.0-0ubuntu0.2
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: java unity
** Attachment added: "minimal sample code demonstrating the problem"
https://bugs.launchpad.net/bugs/1110138/+attachment/3507165/+files/GeometryUnity.java
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https://bugs.launchpad.net/bugs/1110138
Title:
Unity: wrong window dimensions / location in Java applications
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