Quick3DStateSet extension classes for QML of QStateSet

QStateSet,Quick3DStateSet registered as an extended object under the StateSet
name.

Change-Id: I4334958ab55e403c532f3c200eb273925403dcb5
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

4 files changed, 182 insertions, 2 deletions

diff --git a/src/quick3d/imports/render/qt3dquick3drenderplugin.cpp b/src/quick3d/imports/render/qt3dquick3drenderplugin.cpp
index 0a1250f75..4e40686ed 100644
--- a/src/quick3d/imports/render/qt3dquick3drenderplugin.cpp
+++ b/src/quick3d/imports/render/qt3dquick3drenderplugin.cpp
@@ -101,6 +101,7 @@
 #include <Qt3DQuickRenderer/quick3dparameter.h>
 #include <Qt3DQuickRenderer/quick3dshaderdata.h>
 #include <Qt3DQuickRenderer/quick3dshaderdataarray.h>
+#include <Qt3DQuickRenderer/quick3dstateset.h>
 
 static void initResources()
 {
@@ -203,6 +204,7 @@ void Qt3DQuick3DRenderPlugin::registerTypes(const char *uri)
     qmlRegisterType<Qt3D::QRenderTargetSelector>(uri, 2, 0, "RenderTargetSelector");
     qmlRegisterType<Qt3D::QClearBuffer>(uri, 2, 0, "ClearBuffer");
     qmlRegisterExtendedUncreatableType<Qt3D::QFrameGraphNode, Qt3D::Render::Quick::Quick3DFrameGraphItem>(uri, 2, 0, "FrameGraphNode", QStringLiteral("FrameGraphNode is a base class"));
+    qmlRegisterExtendedType<Qt3D::QStateSet, Qt3D::Render::Quick::Quick3DStateSet>(uri, 2, 0, "StateSet");
     qmlRegisterType<Qt3D::QFrameGraph>(uri, 2, 0, "FrameGraph");
 
     // RenderTarget
diff --git a/src/quick3d/quick3drenderer/items/items.pri b/src/quick3d/quick3drenderer/items/items.pri
index b3b1c742a..6d4c905fd 100644
--- a/src/quick3d/quick3drenderer/items/items.pri
+++ b/src/quick3d/quick3drenderer/items/items.pri
@@ -15,7 +15,8 @@ HEADERS += \
     $$PWD/quick3dparameter_p.h \
     $$PWD/quick3dparameter.h \
     $$PWD/quick3dshaderdata.h \
-    $$PWD/quick3dshaderdataarray.h
+    $$PWD/quick3dshaderdataarray.h \
+    $$PWD/quick3dstateset.h
 
 SOURCES += \
     $$PWD/quick3drenderpassfilter.cpp \
@@ -33,6 +34,7 @@ SOURCES += \
     $$PWD/quick3dsortmethod.cpp \
     $$PWD/quick3dparameter.cpp \
     $$PWD/quick3dshaderdata.cpp \
-    $$PWD/quick3dshaderdataarray.cpp
+    $$PWD/quick3dshaderdataarray.cpp \
+    $$PWD/quick3dstateset.cpp
 
 INCLUDEPATH += $$PWD
diff --git a/src/quick3d/quick3drenderer/items/quick3dstateset.cpp b/src/quick3d/quick3drenderer/items/quick3dstateset.cpp
new file mode 100644
index 000000000..fe51cb495
--- /dev/null
+++ b/src/quick3d/quick3drenderer/items/quick3dstateset.cpp
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "quick3dstateset.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3D {
+
+namespace Render {
+
+namespace Quick {
+
+Quick3DStateSet::Quick3DStateSet(QObject *parent)
+    : QObject(parent)
+{
+}
+
+Quick3DStateSet::~Quick3DStateSet()
+{
+}
+
+QQmlListProperty<QRenderState> Quick3DStateSet::renderStateList()
+{
+    return QQmlListProperty<Qt3D::QRenderState>(this, 0,
+                                              &Quick3DStateSet::appendRenderState,
+                                              &Quick3DStateSet::renderStateCount,
+                                              &Quick3DStateSet::renderStateAt,
+                                              &Quick3DStateSet::clearRenderStates);
+
+}
+
+void Quick3DStateSet::appendRenderState(QQmlListProperty<QRenderState> *list, QRenderState *state)
+{
+    Quick3DStateSet *stateSet = qobject_cast<Quick3DStateSet *>(list->object);
+    stateSet->parentStateSet()->addRenderState(state);
+}
+
+QRenderState *Quick3DStateSet::renderStateAt(QQmlListProperty<QRenderState> *list, int index)
+{
+    Quick3DStateSet *stateSet = qobject_cast<Quick3DStateSet *>(list->object);
+    return stateSet->parentStateSet()->renderStates().at(index);
+}
+
+int Quick3DStateSet::renderStateCount(QQmlListProperty<QRenderState> *list)
+{
+    Quick3DStateSet *stateSet = qobject_cast<Quick3DStateSet *>(list->object);
+    return stateSet->parentStateSet()->renderStates().count();
+}
+
+void Quick3DStateSet::clearRenderStates(QQmlListProperty<QRenderState> *list)
+{
+    Quick3DStateSet *stateSet = qobject_cast<Quick3DStateSet *>(list->object);
+    Q_FOREACH (QRenderState *s, stateSet->parentStateSet()->renderStates())
+        stateSet->parentStateSet()->removeRenderState(s);
+}
+
+} // Quick
+
+} // Render
+
+} // Qt3D
+
+QT_END_NAMESPACE
+
diff --git a/src/quick3d/quick3drenderer/items/quick3dstateset.h b/src/quick3d/quick3drenderer/items/quick3dstateset.h
new file mode 100644
index 000000000..6a352b21a
--- /dev/null
+++ b/src/quick3d/quick3drenderer/items/quick3dstateset.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3D_RENDER_QUICK_QUICK3DSTATESET_H
+#define QT3D_RENDER_QUICK_QUICK3DSTATESET_H
+
+#include <Qt3DQuickRenderer/qt3dquickrenderer_global.h>
+#include <Qt3DRenderer/qstateset.h>
+#include <QQmlListProperty>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3D {
+
+namespace Render {
+
+namespace Quick {
+
+class QT3DQUICKRENDERERSHARED_EXPORT Quick3DStateSet : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QQmlListProperty<Qt3D::QRenderState> renderStates READ renderStateList CONSTANT)
+public:
+    explicit Quick3DStateSet(QObject *parent = 0);
+    ~Quick3DStateSet();
+
+    QQmlListProperty<Qt3D::QRenderState> renderStateList();
+    inline QStateSet *parentStateSet() const { return qobject_cast<QStateSet *>(parent()); }
+
+private:
+    static void appendRenderState(QQmlListProperty<Qt3D::QRenderState> *list, QRenderState *state);
+    static QRenderState *renderStateAt(QQmlListProperty<Qt3D::QRenderState> *list, int index);
+    static int renderStateCount(QQmlListProperty<Qt3D::QRenderState> *list);
+    static void clearRenderStates(QQmlListProperty<Qt3D::QRenderState> *list);
+};
+
+} // Quick
+
+} // Render
+
+} // Qt3D
+
+QT_END_NAMESPACE
+
+#endif // QT3D_RENDER_QUICK_QUICK3DSTATESET_H