Improved the support for input methods in Graphics View.

This patch improves the graphics view support for input
methods in several ways:

  * A new ItemAcceptsInputMethod flag is introduced to serve
    the same purpose for graphics items as WA_InputMethodEnabled
    does for widgets: Input method support can be controlled
    individually for each item.
  * The input method sensitivity of a view (i.e. the value of
    the WA_InputMethodEnabled flag) is updated dynamically
    whenever the input method support of the current focus
    item may change.
  * Input contexts are reset whenever an item that supports
    input methods loses focus.

Reviewed-by: janarve
Task-number: 254492

1 files changed, 20 insertions, 2 deletions

diff --git a/src/gui/graphicsview/qgraphicsproxywidget.cpp b/src/gui/graphicsview/qgraphicsproxywidget.cpp
index 0b421ad..5fac6cf 100644
--- a/src/gui/graphicsview/qgraphicsproxywidget.cpp
+++ b/src/gui/graphicsview/qgraphicsproxywidget.cpp
@@ -451,6 +451,22 @@ void QGraphicsProxyWidgetPrivate::updateProxyGeometryFromWidget()
 
 /*!
     \internal
+*/
+void QGraphicsProxyWidgetPrivate::updateProxyInputMethodAcceptanceFromWidget()
+{
+    Q_Q(QGraphicsProxyWidget);
+    if (!widget)
+        return;
+
+    QWidget *focusWidget = widget->focusWidget();
+    if (!focusWidget)
+        focusWidget = widget;
+    q->setFlag(QGraphicsItem::ItemAcceptsInputMethod,
+               focusWidget->testAttribute(Qt::WA_InputMethodEnabled));
+}
+
+/*!
+    \internal
 
     Embeds \a subWin as a subwindow of this proxy widget. \a subWin must be a top-level
     widget and a descendant of the widget managed by this proxy. A separate subproxy
@@ -690,6 +706,8 @@ void QGraphicsProxyWidgetPrivate::setWidget_helper(QWidget *newWidget, bool auto
 
     updateProxyGeometryFromWidget();
 
+    updateProxyInputMethodAcceptanceFromWidget();
+
     // Hook up the event filter to keep the state up to date.
     newWidget->installEventFilter(q);
     QObject::connect(newWidget, SIGNAL(destroyed()), q, SLOT(_q_removeWidgetSlot()));
@@ -1303,8 +1321,8 @@ void QGraphicsProxyWidget::focusInEvent(QFocusEvent *event)
 	if (d->widget && d->widget->focusWidget()) {
 	    d->widget->focusWidget()->setFocus(event->reason());
 	    return;
-	}
-	break;
+        }
+        break;
     }
 }