Support partial input mode

By default Symbian devices use fullscreen editing mode. However, in the
latest AVKON releases a partial virtual keyboard is supported. Support
the non-fullscreen editing mode from QCoeFepInputContext.

The non-fullscreen editing mode is only supported for Symbian^3 and
only for graphicsview-based solutions (QGraphicsView, QGraphicsWebView,
QDeclarativeView, ...). When native side indicates that the keyboard
opens, the graphicsview is possibly translated so that the text cursor
position is ensured to be visible. When keyboard closes, the
translation is removed. If the graphicsview contains vertical scrollbar,
the whole view is resized to the area above the keyboard, since
translating it, would move the upper part of the scrollbar out of
screen area.

There is a new exported private API to control when partial vkb is
used.

Task-number: QTBUG-16572
Reviewed-by: axis
Reviewed-by: Mrudul Pendharkar
Reviewed-by: Laszlo Agocs

1 files changed, 56 insertions, 0 deletions

diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index fb0c6b8..02560b3 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -96,6 +96,10 @@ QT_BEGIN_NAMESPACE
 // Goom Events through Window Server
 static const int KGoomMemoryLowEvent = 0x10282DBF;
 static const int KGoomMemoryGoodEvent = 0x20026790;
+// Split view open/close events from AVKON
+static const int KSplitViewOpenEvent = 0x2001E2C0;
+static const int KSplitViewCloseEvent = 0x2001E2C1;
+
 
 #if defined(QT_DEBUG)
 static bool        appNoGrab        = false;        // Grabbing enabled
@@ -1224,6 +1228,11 @@ void QSymbianControl::FocusChanged(TDrawNow /* aDrawNow */)
     if (m_ignoreFocusChanged || (qwidget->windowType() & Qt::WindowType_Mask) == Qt::Desktop)
         return;
 
+#ifdef Q_WS_S60
+    if (S60->splitViewLastWidget)
+        return;
+#endif
+
     // Popups never get focused, but still receive the FocusChanged when they are hidden.
     if (QApplicationPrivate::popupWidgets != 0
             || (qwidget->windowType() & Qt::Popup) == Qt::Popup)
@@ -1302,9 +1311,56 @@ void QSymbianControl::handleClientAreaChange()
     }
 }
 
+bool QSymbianControl::isSplitViewWidget(QWidget *widget) {
+    bool returnValue = true;
+    //Ignore events sent to non-active windows, not visible widgets and not parents of input widget.
+    if (!qwidget->isActiveWindow()
+        || !qwidget->isVisible()
+        || !qwidget->isAncestorOf(widget)) {
+
+        returnValue = false;
+    }
+    return returnValue;
+}
+
 void QSymbianControl::HandleResourceChange(int resourceType)
 {
     switch (resourceType) {
+    case KSplitViewCloseEvent: //intentional fall-through
+    case KSplitViewOpenEvent: {
+#if !defined(QT_NO_IM) && defined(Q_WS_S60)
+
+        //Fetch widget getting the text input
+        QWidget *widget = QWidget::keyboardGrabber();
+        if (!widget) {
+            if (QApplicationPrivate::popupWidgets) {
+                widget = QApplication::activePopupWidget()->focusWidget();
+                if (!widget) {
+                    widget = QApplication::activePopupWidget();
+                }
+            } else {
+                widget = QApplicationPrivate::focus_widget;
+                if (!widget) {
+                    widget = qwidget;
+                }
+            }
+        }
+        if (widget) {
+            QCoeFepInputContext *ic = qobject_cast<QCoeFepInputContext *>(widget->inputContext());
+            if (!ic) {
+                ic = qobject_cast<QCoeFepInputContext *>(qApp->inputContext());
+            }
+            if (ic && isSplitViewWidget(widget)) {
+                if (resourceType == KSplitViewCloseEvent) {
+                    ic->resetSplitViewWidget();
+                } else {
+                    ic->ensureFocusWidgetVisible(widget);
+                }
+            }
+        }
+#endif // !defined(QT_NO_IM) && defined(Q_WS_S60)
+    }
+    break;
     case KInternalStatusPaneChange:
         handleClientAreaChange();
         if (IsFocused() && IsVisible()) {