quicktextinput: Update IM state after clearing selection with IM event

Virtual keyboard uses quick text input as shadow input control attached
on top of the keyboard when the actual input control is obscured by the
keyboard. The shadow input is synchronized by the IM update events sent
by the actual input control.

When the user makes selection or moves cursor on the shadow input
control, the change is synchronized to actual input control with input
method event (QInputMethodEvent::Selection). This all works, except
when there is a selection and the cursor is clicked. The expected
outcome is that the selection is cleared, and it is, but it was not
reported back to input method.

Fix the issue by sending the update in case the selection is cleared.

Change-Id: Ieabc9ee97ad9fe6154d46f302314e3ebdfd10de2
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 6ab7e33b0549c40a33c1d733e4ab516d34a8a887)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/quick/items/qquicktextinput.cpp b/src/quick/items/qquicktextinput.cpp
index f944cfe7d7..61844ca0e1 100644
--- a/src/quick/items/qquicktextinput.cpp
+++ b/src/quick/items/qquicktextinput.cpp
@@ -3511,6 +3511,7 @@ void QQuickTextInputPrivate::processInputMethodEvent(QInputMethodEvent *event)
                 }
                 selectionChange = true;
             } else {
+                selectionChange = m_selstart != m_selend;
                 m_selstart = m_selend = 0;
             }
             cursorPositionChanged = true;