Dispatch tablet events to widgets

Plus remove some platform-specific tablet leftovers from Qt4.

Change-Id: I376abc38d1fe4c253d8803cf0ce007e2d6c298bf
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/src/widgets/kernel/qwidgetwindow_qpa.cpp b/src/widgets/kernel/qwidgetwindow_qpa.cpp
index 2e1e6854ff..3b1d69e46d 100644
--- a/src/widgets/kernel/qwidgetwindow_qpa.cpp
+++ b/src/widgets/kernel/qwidgetwindow_qpa.cpp
@@ -51,6 +51,7 @@
 QT_BEGIN_NAMESPACE
 
 QWidget *qt_button_down = 0; // widget got last button-down
+static QWidget *qt_tablet_target = 0;
 
 // popup control
 QWidget *qt_popup_down = 0; // popup that contains the pressed widget
@@ -178,6 +179,14 @@ bool QWidgetWindow::event(QEvent *event)
     }
         return true;
 
+#ifndef QT_NO_TABLETEVENT
+    case QEvent::TabletPress:
+    case QEvent::TabletMove:
+    case QEvent::TabletRelease:
+        handleTabletEvent(static_cast<QTabletEvent *>(event));
+        return true;
+#endif
+
     default:
         break;
     }
@@ -527,6 +536,32 @@ bool QWidgetWindow::nativeEvent(const QByteArray &eventType, void *message, long
     return m_widget->nativeEvent(eventType, message, result);
 }
 
+#ifndef QT_NO_TABLETEVENT
+void QWidgetWindow::handleTabletEvent(QTabletEvent *event)
+{
+    if (event->type() == QEvent::TabletPress) {
+        QWidget *widget = m_widget->childAt(event->pos());
+        if (!widget)
+            widget = m_widget;
+
+        qt_tablet_target = widget;
+    }
+
+    if (qt_tablet_target) {
+        QPointF delta = event->globalPosF() - event->globalPos();
+        QPointF mapped = qt_tablet_target->mapFromGlobal(event->globalPos()) + delta;
+        QTabletEvent ev(event->type(), mapped, event->globalPosF(), event->device(), event->pointerType(),
+                        event->pressure(), event->xTilt(), event->yTilt(), event->tangentialPressure(),
+                        event->rotation(), event->z(), event->modifiers(), event->uniqueId());
+        ev.setTimestamp(event->timestamp());
+        QGuiApplication::sendSpontaneousEvent(qt_tablet_target, &ev);
+    }
+
+    if (event->type() == QEvent::TabletRelease)
+        qt_tablet_target = 0;
+}
+#endif // QT_NO_TABLETEVENT
+
 void QWidgetWindow::updateObjectName()
 {
     QString name = m_widget->objectName();