Use QPlatformTheme::TouchDoubleTapDistance for touch events

... and update the cached values on theme change.

Modify tst_QWidget::touchEventSynthesizedMouseEvent()
to avoid unexpected double click detection.

Change-Id: I151c47e851ebba7550b1b09caca2781c28d7d3d9
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

1 files changed, 6 insertions, 4 deletions

diff --git a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
index 3b9c9060fa..780cb01e40 100644
--- a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
+++ b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
@@ -10152,7 +10152,8 @@ void tst_QWidget::touchEventSynthesizedMouseEvent()
         // We should see propagation of the TouchBegin into a MouseButtonPress
         TouchMouseWidget parent;
         TouchMouseWidget child(&parent);
-        child.move(5, 5);
+        const QPoint childPos(5, 5);
+        child.move(childPos);
         child.setAcceptMouse(false);
         parent.show();
         QVERIFY(QTest::qWaitForWindowExposed(parent.windowHandle()));
@@ -10161,13 +10162,14 @@ void tst_QWidget::touchEventSynthesizedMouseEvent()
         QCOMPARE(child.m_touchEventCount, 0);
         QCOMPARE(child.m_mouseEventCount, 0);
 
-        QTest::touchEvent(parent.window(), m_touchScreen).press(0, QPoint(10, 10), &child);
+        const QPoint touchPos(20, 20);
+        QTest::touchEvent(parent.window(), m_touchScreen).press(0, touchPos, &child);
         QCOMPARE(parent.m_touchEventCount, 0);
         QCOMPARE(parent.m_mouseEventCount, 1);
-        QCOMPARE(parent.m_lastMouseEventPos, QPointF(15, 15));
+        QCOMPARE(parent.m_lastMouseEventPos, childPos + touchPos);
         QCOMPARE(child.m_touchEventCount, 0);
         QCOMPARE(child.m_mouseEventCount, 1); // Attempt at mouse event before propagation
-        QCOMPARE(child.m_lastMouseEventPos, QPointF(10, 10));
+        QCOMPARE(child.m_lastMouseEventPos, touchPos);
     }
 }