filtering of input method events moved to QskInputContext

inputcontext/QskInputContext.cpp

@@ -323,6 +323,8 @@ void QskInputContext::hideInputPanel()
     {
         m_data->inputPanel->setVisible( false );
     }
+
+    qGuiApp->removeEventFilter( this );
 }
 
 bool QskInputContext::isInputPanelVisible() const
@@ -365,6 +367,14 @@ void QskInputContext::setFocusObject( QObject* focusObject )
         if( qskNearestFocusScope( focusItem ) != m_data->inputPanel )
             setInputItem( focusItem );
     }
+
+    if ( m_data->inputPanel && m_data->inputPanel->isVisible() )
+    {
+        if ( m_data->inputItem && focusItem != m_data->inputItem )
+            qGuiApp->installEventFilter( this );
+        else
+            qGuiApp->removeEventFilter( this );
+    }
 }
 
 void QskInputContext::setCompositionModel(
@@ -468,11 +478,12 @@ void QskInputContext::setInputPanel( QQuickItem* inputPanel )
 
     if ( inputPanel )
     {
-        // maybe using a QQuickItemChangeListener instead
-#if 1
         connect( inputPanel, &QQuickItem::visibleChanged,
             this, &QPlatformInputContext::emitInputPanelVisibleChanged );
 
+        // maybe using a QQuickItemChangeListener instead
+#if 1
+
         connect( inputPanel, &QQuickItem::xChanged,
             this, &QPlatformInputContext::emitKeyboardRectChanged );
 
@@ -508,6 +519,28 @@ void QskInputContext::commit()
 {
 }
 
+bool QskInputContext::eventFilter( QObject* object, QEvent* event )
+{   
+    if ( event->type() == QEvent::InputMethodQuery )
+    {
+        /*
+            Qt/Quick expects that the item associated with the input context
+            holds the focus. But this does not work, when a virtual
+            keyboard is used, where you can navigate and select inside.
+            So we have to fix the receiver.
+         */
+
+        if ( ( object != m_data->inputItem )
+            && qskIsAncestorOf( m_data->inputPanel, m_data->inputItem ) )
+        {
+            sendEventToInputItem( event );
+            return true;
+        }
+    }
+
+    return Inherited::eventFilter( object, event );
+}
+
 bool QskInputContext::filterEvent( const QEvent* event )
 {
     // called from QXcbKeyboard, but what about other platforms

inputcontext/QskInputContext.h

@@ -57,6 +57,8 @@ private Q_SLOTS:
     void handleCandidatesChanged();
     void setInputPanel( QQuickItem* );
 
+    virtual bool eventFilter( QObject*, QEvent* ) override;
+
 private:
     void setInputItem( QQuickItem* );
     QskInputCompositionModel* compositionModel() const;

src/controls/QskControl.cpp

@@ -78,6 +78,9 @@ bool qskIsItemComplete( const QQuickItem* item )
 
 bool qskIsAncestorOf( const QQuickItem* item, const QQuickItem* child )
 {
+    if ( item == nullptr || child == nullptr )
+        return false;
+
 #if QT_VERSION >= QT_VERSION_CHECK(5, 7, 0)
     return item->isAncestorOf( child );
 #else

src/inputpanel/QskInputPanel.cpp

@@ -10,13 +10,7 @@
 
 #include <QString>
 #include <QLocale>
-
-QSK_QT_PRIVATE_BEGIN
-#include <private/qinputmethod_p.h>
-QSK_QT_PRIVATE_END
-
-#include <qpa/qplatformintegration.h>
-#include <qpa/qplatforminputcontext.h>
+#include <QGuiApplication>
 
 QString qskNativeLocaleString( const QLocale& locale )
 {
@@ -105,32 +99,6 @@ QString qskNativeLocaleString( const QLocale& locale )
     }
 }
 
-static inline QQuickItem* qskInputItem()
-{
-    QPlatformInputContext* inputContext;
-#if 1
-    inputContext = QGuiApplicationPrivate::platformIntegration()->inputContext();
-#else
-    // for some reason the gcc sanitizer does not like this one
-    inputContext = QInputMethodPrivate::get( inputMethod )->platformInputContext();
-#endif
-
-    QQuickItem* item = nullptr;
-
-    QMetaObject::invokeMethod( inputContext, "inputItem",
-        Qt::DirectConnection, Q_RETURN_ARG( QQuickItem*, item ) );
-
-    return item;
-}
-
-static inline void qskInstallEventFilter( QskInputPanel* panel, bool on )
-{
-    if ( on )
-        qGuiApp->installEventFilter( panel );
-    else
-        qGuiApp->removeEventFilter( panel );
-}
-
 class QskInputPanel::PrivateData
 {
 public:
@@ -201,57 +169,4 @@ void QskInputPanel::commitKey( Qt::Key key )
         static_cast< QInputMethod::Action >( Compose ), key );
 }
 
-void QskInputPanel::updateLayout()
-{
-    if ( !isInitiallyPainted() )
-        qskInstallEventFilter( this, isVisible() );
-
-    Inherited::updateLayout();
-}
-
-void QskInputPanel::itemChange( QQuickItem::ItemChange change,
-    const QQuickItem::ItemChangeData& value )
-{
-    switch( change )
-    {
-        case QQuickItem::ItemVisibleHasChanged:
-        case QQuickItem::ItemSceneChange:
-        {
-            if ( isInitiallyPainted() )
-                qskInstallEventFilter( this, isVisible() );
-
-            break;
-        }
-        default:
-            break;
-    }
-
-    Inherited::itemChange( change, value );
-}
-
-bool QskInputPanel::eventFilter( QObject* object, QEvent* event )
-{
-    if ( event->type() == QEvent::InputMethodQuery )
-    {
-        const auto item = qskInputItem();
-
-        /*
-            Qt/Quick expects that the item associated with the input context
-            always has the focus. But this does not work, when a virtual
-            keyboard is used, where you can navigate and select inside.
-            So we have to fix the receiver.
-
-            Maybe QEvent::EnterEditFocus is good for something ??
-         */
-
-        if ( item && ( object != item ) && qskIsAncestorOf( this, item ) )
-        {
-            QGuiApplication::sendEvent( item, event );
-            return true;
-        }
-    }
-
-    return Inherited::eventFilter( object, event );
-}
-
 #include "moc_QskInputPanel.cpp"

src/inputpanel/QskInputPanel.h

@@ -38,11 +38,6 @@ public Q_SLOTS:
     void setCandidatesEnabled( bool );
     void setCandidates( const QVector< QString >& );
 
-protected:
-    virtual void updateLayout() override;
-    virtual void itemChange( ItemChange, const ItemChangeData& ) override;
-    virtual bool eventFilter( QObject*, QEvent* ) override;
-
 private:
     void commitKey( Qt::Key );
     void commitCandidate( int );