On Thu, 21 Jan 2021 23:07:23 GMT, Kevin Rushforth <k...@openjdk.org> wrote:
>> By using the anchor location facility of PopupWindows we can avoid
>> miscalculation of the
>> menu's height entirely.
>> This fix also cleans up some documentation issues.
>> This fix introduces tests that check the correct positioning (test_position_)
>> test_position_withCSS reproduces the problem that is fixed with this patch.
>> The other test_position_ cases serve as "proof" that no regressions are
>> introduces.
>> They work before and after the fix is introduced.
>
> modules/javafx.controls/src/main/java/javafx/scene/control/ContextMenu.java
> line 241:
>
>> 239: * the {@code ContextMenu} such that its top-left (0,0) position
>> would be attached
>> 240: * to the top-right position of the anchor.
>> 241: * <p>
>
> I think it is worth adding a short replacement for this, explaining how the
> side parameter and delta values affect the location of the popup.
While trying to come up with a good documentation I've detected a real change
in behaviour in connection with the NodeOrientation of the anchor node.
Although this has never been documented, when NodeOrientation.RIGHT_TO_LEFT is
set, the context menu was right-aligned for Side=TOP and Side=BOTTOM.
Since I assume we don't want to change this behaviour I would now document it
and adapt my patch accordingly. I've already written a test case like this:
@Test public void test_position_withOrientation() throws
InterruptedException {
ContextMenu cm = createContextMenu(false);
anchorBtn.setNodeOrientation(NodeOrientation.RIGHT_TO_LEFT);
cm.show(anchorBtn, Side.TOP, 0, 0);
Bounds anchorBounds =
anchorBtn.localToScreen(anchorBtn.getLayoutBounds());
Node cmNode = cm.getScene().getRoot();
Bounds cmBounds =
cm.getScene().getRoot().localToScreen(cmNode.getLayoutBounds());
assertEquals(anchorBounds.getMaxX(), cmBounds.getMaxX(), 0.0);
assertEquals(anchorBounds.getMinY(), cmBounds.getMaxY(), 0.0);
anchorBtn.setNodeOrientation(NodeOrientation.LEFT_TO_RIGHT);
}
which passes with the old implementation but (currently) fails with the new
implementation.
-------------
PR: https://git.openjdk.java.net/jfx/pull/383
