Update QAxis to use direct sync

Change-Id: Id159885d3c3ef4f2582a7b308350c6b43182f521
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

4 files changed, 17 insertions, 47 deletions

diff --git a/src/input/backend/axis.cpp b/src/input/backend/axis.cpp
index 6ba4e2b34..20c05a49f 100644
--- a/src/input/backend/axis.cpp
+++ b/src/input/backend/axis.cpp
@@ -42,10 +42,9 @@
 #include <Qt3DInput/qaxis.h>
 #include <Qt3DInput/qabstractaxisinput.h>
 #include <Qt3DCore/qpropertyupdatedchange.h>
-#include <Qt3DCore/qpropertynodeaddedchange.h>
-#include <Qt3DCore/qpropertynoderemovedchange.h>
 
 #include <Qt3DInput/private/qaxis_p.h>
+#include <algorithm>
 
 QT_BEGIN_NAMESPACE
 
@@ -54,18 +53,11 @@ namespace Qt3DInput {
 namespace Input {
 
 Axis::Axis()
-    : Qt3DCore::QBackendNode(ReadWrite)
+    : BackendNode(ReadWrite)
     , m_axisValue(0.0f)
 {
 }
 
-void Axis::initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change)
-{
-    const auto typedChange = qSharedPointerCast<Qt3DCore::QNodeCreatedChange<QAxisData>>(change);
-    const auto &data = typedChange->data;
-    m_inputs = data.inputIds;
-}
-
 void Axis::cleanup()
 {
     QBackendNode::setEnabled(false);
@@ -75,11 +67,11 @@ void Axis::cleanup()
 
 void Axis::setAxisValue(float axisValue)
 {
-    if (isEnabled() && (axisValue != m_axisValue)) {
+    if (isEnabled() && (!qFuzzyCompare(axisValue, m_axisValue))) {
         m_axisValue = axisValue;
 
         // Send a change to the frontend
-        auto e = Qt3DCore::QPropertyUpdatedChangePtr::create(peerId());
+        auto e = Qt3DCore::QPropertyUpdatedChangePtr::create(peerId()); // TODOSYNC replace with direct access
         e->setDeliveryFlags(Qt3DCore::QSceneChange::DeliverToAll);
         e->setPropertyName("value");
         e->setValue(m_axisValue);
@@ -87,26 +79,15 @@ void Axis::setAxisValue(float axisValue)
     }
 }
 
-void Axis::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e)
+void Axis::syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime)
 {
-    switch (e->type()) {
-    case Qt3DCore::PropertyValueAdded: {
-        const auto change = qSharedPointerCast<Qt3DCore::QPropertyNodeAddedChange>(e);
-        if (change->propertyName() == QByteArrayLiteral("input"))
-            m_inputs.push_back(change->addedNodeId());
-        break;
-    }
+    BackendNode::syncFromFrontEnd(frontEnd, firstTime);
+    const Qt3DInput::QAxis *node = qobject_cast<const Qt3DInput::QAxis *>(frontEnd);
+    if (!node)
+        return;
 
-    case Qt3DCore::PropertyValueRemoved: {
-        const auto change = qSharedPointerCast<Qt3DCore::QPropertyNodeRemovedChange>(e);
-        if (change->propertyName() == QByteArrayLiteral("input"))
-            m_inputs.removeOne(change->removedNodeId());
-    }
-
-    default:
-        break;
-    }
-    QBackendNode::sceneChangeEvent(e);
+    auto ids = Qt3DCore::qIdsForNodes(node->inputs());
+    m_inputs = ids;
 }
 
 } // namespace Input
diff --git a/src/input/backend/axis_p.h b/src/input/backend/axis_p.h
index b83405060..da4ec9ac6 100644
--- a/src/input/backend/axis_p.h
+++ b/src/input/backend/axis_p.h
@@ -51,7 +51,7 @@
 // We mean it.
 //
 
-#include <Qt3DCore/qbackendnode.h>
+#include <Qt3DInput/private/backendnode_p.h>
 #include <Qt3DCore/qnodeid.h>
 
 QT_BEGIN_NAMESPACE
@@ -60,7 +60,7 @@ namespace Qt3DInput {
 
 namespace Input {
 
-class Q_AUTOTEST_EXPORT Axis : public Qt3DCore::QBackendNode
+class Q_AUTOTEST_EXPORT Axis : public BackendNode
 {
 public:
     Axis();
@@ -68,11 +68,9 @@ public:
     inline QVector<Qt3DCore::QNodeId> inputs() const { return m_inputs; }
     inline float axisValue() const { return m_axisValue; }
     void setAxisValue(float axisValue);
-    void sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e) override;
+    void syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime) override;
 
 private:
-    void initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change) final;
-
     QVector<Qt3DCore::QNodeId> m_inputs;
     float m_axisValue;
 };
diff --git a/src/input/frontend/qaxis.cpp b/src/input/frontend/qaxis.cpp
index 1830c8005..082ad4f67 100644
--- a/src/input/frontend/qaxis.cpp
+++ b/src/input/frontend/qaxis.cpp
@@ -117,12 +117,7 @@ void QAxis::addInput(QAbstractAxisInput *input)
 
         // Ensures proper bookkeeping
         d->registerDestructionHelper(input, &QAxis::removeInput, d->m_inputs);
-
-        if (d->m_changeArbiter != nullptr) {
-            const auto change = Qt3DCore::QPropertyNodeAddedChangePtr::create(id(), input);
-            change->setPropertyName("input");
-            d->notifyObservers(change);
-        }
+        d->update();
     }
 }
 
@@ -144,11 +139,7 @@ void QAxis::removeInput(QAbstractAxisInput *input)
     Q_D(QAxis);
     if (d->m_inputs.contains(input)) {
 
-        if (d->m_changeArbiter != nullptr) {
-            const auto change = Qt3DCore::QPropertyNodeRemovedChangePtr::create(id(), input);
-            change->setPropertyName("input");
-            d->notifyObservers(change);
-        }
+        d->update();
 
         d->m_inputs.removeOne(input);
 
diff --git a/src/input/frontend/qinputaspect.cpp b/src/input/frontend/qinputaspect.cpp
index e91e545bb..c063f2580 100644
--- a/src/input/frontend/qinputaspect.cpp
+++ b/src/input/frontend/qinputaspect.cpp
@@ -149,7 +149,7 @@ QInputAspect::QInputAspect(QInputAspectPrivate &dd, QObject *parent)
     registerBackendType<QKeyboardHandler>(QBackendNodeMapperPtr(new Input::KeyboardHandlerFunctor(d_func()->m_inputHandler.data())));
     registerBackendType<QMouseDevice>(QBackendNodeMapperPtr(new Input::MouseDeviceFunctor(this, d_func()->m_inputHandler.data())));
     registerBackendType<QMouseHandler>(QBackendNodeMapperPtr(new Input::MouseHandlerFunctor(d_func()->m_inputHandler.data())));
-    registerBackendType<QAxis>(QBackendNodeMapperPtr(new Input::InputNodeFunctor<Input::Axis, Input::AxisManager>(d_func()->m_inputHandler->axisManager())));
+    registerBackendType<QAxis, true>(QBackendNodeMapperPtr(new Input::InputNodeFunctor<Input::Axis, Input::AxisManager>(d_func()->m_inputHandler->axisManager())));
     registerBackendType<QAxisAccumulator>(QBackendNodeMapperPtr(new Input::InputNodeFunctor<Input::AxisAccumulator, Input::AxisAccumulatorManager>(d_func()->m_inputHandler->axisAccumulatorManager())));
     registerBackendType<QAnalogAxisInput>(QBackendNodeMapperPtr(new Input::InputNodeFunctor<Input::AnalogAxisInput, Input::AnalogAxisInputManager>(d_func()->m_inputHandler->analogAxisInputManager())));
     registerBackendType<QButtonAxisInput>(QBackendNodeMapperPtr(new Input::InputNodeFunctor<Input::ButtonAxisInput, Input::ButtonAxisInputManager>(d_func()->m_inputHandler->buttonAxisInputManager())));