Class QStateSet renamed to QRenderStateSet

Task-number: QTBUG-51470
Change-Id: Ibf2de3cc0027b5851fa663c590b9b2f181c3077c
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

1 files changed, 152 insertions, 0 deletions

diff --git a/src/render/framegraph/qrenderstateset.cpp b/src/render/framegraph/qrenderstateset.cpp
new file mode 100644
index 000000000..016f8627f
--- /dev/null
+++ b/src/render/framegraph/qrenderstateset.cpp
@@ -0,0 +1,152 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qrenderstateset.h"
+#include "qrenderstateset_p.h"
+
+#include <Qt3DCore/qscenepropertychange.h>
+#include <Qt3DRender/qrenderstate.h>
+
+QT_BEGIN_NAMESPACE
+
+using namespace Qt3DCore;
+
+namespace Qt3DRender {
+
+QRenderStateSetPrivate::QRenderStateSetPrivate()
+    : QFrameGraphNodePrivate()
+{
+}
+
+/*!
+ * \class Qt3DRender::QRenderStateSet
+ * \inmodule Qt3DRender
+ *
+ * \brief The QRenderStateSet \l {QFrameGraphNode}{FrameGraph} node offers a way of
+ * specifying a set of QRenderState objects to be applied during the execution
+ * of a framegraph branch.
+ *
+ * States set on a QRenderStateSet are set globally, contrary to the per-material
+ * states that can be set on a QRenderPass. By default, an empty
+ * QRenderStateSet will result in all render states being disabled when
+ * executed. Adding a QRenderState state explicitly enables that render
+ * state at runtime.
+ *
+ * \since 5.5
+ *
+ * \sa QRenderState, QRenderPass
+ */
+
+QRenderStateSet::QRenderStateSet(QNode *parent)
+    : QFrameGraphNode(*new QRenderStateSetPrivate, parent)
+{
+}
+
+QRenderStateSet::QRenderStateSet(QRenderStateSetPrivate &dd, QNode *parent)
+    : QFrameGraphNode(dd, parent)
+{
+}
+
+QRenderStateSet::~QRenderStateSet()
+{
+    QNode::cleanup();
+}
+
+void QRenderStateSet::copy(const QNode *ref)
+{
+    QFrameGraphNode::copy(ref);
+    const QRenderStateSet *other = static_cast<const QRenderStateSet*>(ref);
+
+    Q_FOREACH (QRenderState *renderState, other->d_func()->m_renderStates)
+        addRenderState(qobject_cast<QRenderState *>(QNode::clone(renderState)));
+}
+
+/*!
+ * Adds a new QRenderState \a state to the QRenderStateSet instance.
+ *
+ * \note Not setting any QRenderState state on a QRenderStateSet instance
+ * implies all the render states will be disabled at render time.
+ */
+void QRenderStateSet::addRenderState(QRenderState *state)
+{
+    Q_D(QRenderStateSet);
+
+    if (!d->m_renderStates.contains(state)) {
+        d->m_renderStates.append(state);
+
+        if (!state->parent())
+            state->setParent(this);
+
+        if (d->m_changeArbiter != Q_NULLPTR) {
+            QScenePropertyChangePtr change(new QScenePropertyChange(NodeAdded, QSceneChange::Node, id()));
+            change->setPropertyName("renderState");
+            // Since we have no RenderState managers, we need to send a clone
+            change->setValue(QVariant::fromValue(QNodePtr(QNode::clone(state))));
+            d->notifyObservers(change);
+        }
+    }
+}
+
+/*!
+ * Removes the QRenderState \a state from the QRenderStateSet instance.
+ */
+void QRenderStateSet::removeRenderState(QRenderState *state)
+{
+    Q_D(QRenderStateSet);
+    if (d->m_changeArbiter != Q_NULLPTR) {
+        QScenePropertyChangePtr change(new QScenePropertyChange(NodeRemoved, QSceneChange::Node, id()));
+        change->setPropertyName("renderState");
+        change->setValue(QVariant::fromValue(state->id()));
+        d->notifyObservers(change);
+    }
+    d->m_renderStates.removeOne(state);
+}
+
+/*!
+ * Returns the list of QRenderState objects that compose the QRenderStateSet instance.
+ */
+QList<QRenderState *> QRenderStateSet::renderStates() const
+{
+    Q_D(const QRenderStateSet);
+    return d->m_renderStates;
+}
+
+} // namespace Qt3DRender
+
+QT_END_NAMESPACE