QLineEdit Cursor show white area

fix QLineEdit Cursor Rect and InputMask area overlapping,
the cursor rect area is white. when inputMask is set,we don't
need draw cursor.

Fixes: QTBUG-89578
Pick-to: 5.15 6.0
Change-Id: Ibec7f8f1f7331a12438fd821c2002903260da10a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/widgets/widgets/qlineedit.cpp b/src/widgets/widgets/qlineedit.cpp
index 4a877c7596..9643c4db43 100644
--- a/src/widgets/widgets/qlineedit.cpp
+++ b/src/widgets/widgets/qlineedit.cpp
@@ -2073,8 +2073,10 @@ void QLineEdit::paintEvent(QPaintEvent *)
 
     // Asian users see an IM selection text as cursor on candidate
     // selection phase of input method, so the ordinary cursor should be
-    // invisible if we have a preedit string.
-    if (d->cursorVisible && !d->control->isReadOnly())
+    // invisible if we have a preedit string. another condition is when inputmask
+    // isn't empty,we don't need draw cursor,because cursor and character overlaping
+    // area is white.
+    if (d->cursorVisible && !d->control->isReadOnly() && d->control->inputMask().isEmpty())
         flags |= QWidgetLineControl::DrawCursor;
 
     d->control->setCursorWidth(style()->pixelMetric(QStyle::PM_TextCursorWidth, &panel));