QTabWidget/Bar: ignore hidden tabs for key events

Even a tab was hidden it could be accessed with the key navigation or
a scroll event which lead to painting artifacts.

Pick-to: 6.6 6.5 5.15
Fixes: QTBUG-101219
Task-number: QTBUG-63038
Change-Id: I58be694eef5f86cccecbe528891a39a4acdda15f
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp b/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
index 00d09873b2..7aede22441 100644
--- a/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
+++ b/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
@@ -50,6 +50,7 @@ private slots:
     void hideTab_data();
     void hideTab();
     void hideAllTabs();
+    void checkHiddenTab();
 
     void setElideMode_data();
     void setElideMode();
@@ -367,6 +368,25 @@ void tst_QTabBar::hideAllTabs()
     QVERIFY(sizeHint.width() < prevSizeHint.width());
 }
 
+void tst_QTabBar::checkHiddenTab()
+{
+    QTabBar tabbar;
+
+    tabbar.addTab("foo");
+    tabbar.addTab("bar");
+    tabbar.addTab("baz");
+    tabbar.setCurrentIndex(0);
+    tabbar.setTabVisible(1, false);
+
+    QKeyEvent keyRight(QKeyEvent::KeyPress, Qt::Key_Right, Qt::NoModifier);
+    QVERIFY(QApplication::sendEvent(&tabbar, &keyRight));
+    QCOMPARE(tabbar.currentIndex(), 2);
+
+    QKeyEvent keyLeft(QKeyEvent::KeyPress, Qt::Key_Left, Qt::NoModifier);
+    QVERIFY(QApplication::sendEvent(&tabbar, &keyLeft));
+    QCOMPARE(tabbar.currentIndex(), 0);
+}
+
 void tst_QTabBar::setElideMode_data()
 {
     QTest::addColumn<int>("tabElideMode");