ScxmlEditor: Initial import

Change-Id: I4701b77ebd4e2520f2616c42206ac17be3a12b60
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/plugins/scxmleditor/plugin_interface/sceneutils.h

@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "baseitem.h"
+
+#include <QGraphicsScene>
+
+QT_FORWARD_DECLARE_CLASS(QGraphicsItem)
+
+namespace ScxmlEditor {
+
+namespace PluginInterface {
+
+class GraphicsScene;
+class ConnectableItem;
+class InitialStateItem;
+class BaseItem;
+class ScxmlTag;
+
+/**
+ * Namespace SceneUtils includes some usable function to manipulate the data of the items.
+ */
+namespace SceneUtils {
+
+ScxmlTag *addChild(ScxmlTag *tag, const QVariantMap &data, GraphicsScene *scene);
+ScxmlTag *addNewTag(ScxmlTag *parent, TagType type, GraphicsScene *scene);
+ConnectableItem *createItem(ItemType type, const QPointF &pos = QPointF());
+ConnectableItem *createItemByTagType(TagType type, const QPointF &pos = QPointF());
+ScxmlTag *createTag(ItemType type, ScxmlDocument *document);
+bool canDrop(int parentType, int childType);
+QVector<ScxmlTag*> findCopyTags(const QVector<BaseItem*> &items, QPointF &minPos);
+QVector<ScxmlTag*> findRemovedTags(const QVector<BaseItem*> &items);
+void layout(const QList<QGraphicsItem*> &items);
+bool isSomeSelected(QGraphicsItem *item);
+void moveTop(BaseItem *item, GraphicsScene *scene);
+
+bool isChild(const QGraphicsItem *parent, const QGraphicsItem *child);
+
+template <class T>
+bool hasSiblingStates(T *item)
+{
+    if (item) {
+        QList<QGraphicsItem*> children;
+        QGraphicsItem *parentItem = item->parentItem();
+        if (parentItem) {
+            children = parentItem->childItems();
+        } else if (item->scene()) {
+            foreach (QGraphicsItem *it, item->scene()->items()) {
+                if (!it->parentItem())
+                    children << it;
+            }
+        }
+
+        foreach (QGraphicsItem *it, children) {
+            if (it != item && it->type() == item->type()) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+} // namespace SceneUtils
+} // namespace PluginInterface
+} // namespace ScxmlEditor