Focus event fix for QQuickWidget

Relay focus in/out events to the offscreen QQuickWindow, and also
make the offscreen window believe it has the focus when the
render window has it.

Task-number: QTBUG-39033
Change-Id: Ib50b134e635833ad3813693ca272f04607c525b8
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/quick/items/qquickwindow.cpp b/src/quick/items/qquickwindow.cpp
index 6220ea2e1f..e78f9141a8 100644
--- a/src/quick/items/qquickwindow.cpp
+++ b/src/quick/items/qquickwindow.cpp
@@ -687,6 +687,13 @@ void QQuickWindowPrivate::translateTouchEvent(QTouchEvent *touchEvent)
     touchEvent->setTouchPoints(touchPoints);
 }
 
+
+static inline bool windowHasFocus(QQuickWindow *win)
+{
+    const QWindow *focusWindow = QGuiApplication::focusWindow();
+    return win == focusWindow || QQuickRenderControl::renderWindowFor(win) == focusWindow;
+}
+
 /*!
 Set the focus inside \a scope to be \a item.
 If the scope contains the active focus item, it will be changed to \a item.
@@ -762,7 +769,7 @@ void QQuickWindowPrivate::setFocusInScope(QQuickItem *scope, QQuickItem *item, Q
     }
 
     if (!(options & DontChangeFocusProperty)) {
-        if (item != contentItem || QGuiApplication::focusWindow() == q) {
+        if (item != contentItem || windowHasFocus(q)) {
             itemPrivate->focus = true;
             changed << item;
         }