QParallelAnimationGroup pause resume fixed

If you resumed a parallel animation group, it would always restart
(ie. stop and start) the animation which would reset its current time
to 0 and trigger flickering.
autotest included.

Task-Number: 259102

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp b/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp
index d7d6b88436..16c58b0d46 100644
--- a/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp
+++ b/tests/auto/qparallelanimationgroup/tst_qparallelanimationgroup.cpp
@@ -74,6 +74,7 @@ private slots:
     void loopCount_data();
     void loopCount();
     void autoAdd();
+    void pauseResume();
 };
 
 tst_QParallelAnimationGroup::tst_QParallelAnimationGroup()
@@ -828,5 +829,37 @@ void tst_QParallelAnimationGroup::autoAdd()
     QCOMPARE(group.duration(), 0);
 }
 
+void tst_QParallelAnimationGroup::pauseResume()
+{
+    QParallelAnimationGroup group;
+    TestAnimation2 *anim = new TestAnimation2(250, &group);      // 0, duration = 250;
+    QSignalSpy spy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
+    QCOMPARE(group.duration(), 250);
+    group.start();
+    QTest::qWait(100);
+    QCOMPARE(group.state(), QAnimationGroup::Running);
+    QCOMPARE(anim->state(), QAnimationGroup::Running);
+    QCOMPARE(spy.count(), 1);
+    spy.clear();
+    const int currentTime = group.currentTime();
+    QCOMPARE(anim->currentTime(), currentTime);
+
+    group.pause();
+    QCOMPARE(group.state(), QAnimationGroup::Paused);
+    QCOMPARE(group.currentTime(), currentTime);
+    QCOMPARE(anim->state(), QAnimationGroup::Paused);
+    QCOMPARE(anim->currentTime(), currentTime);
+    QCOMPARE(spy.count(), 1);
+    spy.clear();
+
+    group.resume();
+    QCOMPARE(group.state(), QAnimationGroup::Running);
+    QCOMPARE(group.currentTime(), currentTime);
+    QCOMPARE(anim->state(), QAnimationGroup::Running);
+    QCOMPARE(anim->currentTime(), currentTime);
+    QCOMPARE(spy.count(), 1);
+}
+
+
 QTEST_MAIN(tst_QParallelAnimationGroup)
 #include "tst_qparallelanimationgroup.moc"