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Try to stabilize relative location calculation of Swing components #1524 #1568

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Merged
ptziegler merged 1 commit into from
Jul 25, 2026
+23 −2
Merged

Try to stabilize relative location calculation of Swing components #1524 #1568

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25 changes: 23 additions & 2 deletions org.eclipse.wb.swing/src/org/eclipse/wb/internal/swing/utils/SwingUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -281,8 +281,29 @@ public static Point getScreenLocation(final Component component) throws Exceptio
*/
public static Point getRelativeLocation(final Component parentComponent, final Component childComponent)
throws Exception {
return runObjectLaterAndWait(() -> SwingUtilities.convertPoint(childComponent.getParent(),
childComponent.getLocation(), parentComponent));
if (EnvironmentUtils.IS_LINUX) {
return internalGetRelativeLocationLinux(parentComponent, childComponent);
}
return internalGetRelativeLocation(parentComponent, childComponent);
}

private static Point internalGetRelativeLocationLinux(final Component parentComponent, final Component childComponent) throws Exception {
long end = System.currentTimeMillis() + 1000;
Point p;
do {
p = internalGetRelativeLocation(parentComponent, childComponent);
// The Swing component is moved asynchronously by the window manager. Wait until we get a consistent result
Point p1 = internalGetRelativeLocation(parentComponent, childComponent);
if (p.equals(p1)) {
break;
}
} while (System.currentTimeMillis() < end);
return p;

}

private static Point internalGetRelativeLocation(final Component parentComponent, final Component childComponent) throws Exception {
return runObjectLaterAndWait(() -> SwingUtilities.convertPoint(childComponent.getParent(), childComponent.getLocation(), parentComponent));
}

/**
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