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/****************************************************************************
**
** 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 "transitionitem.h"
#include <QPen>
QT_FORWARD_DECLARE_CLASS(QGraphicsSceneMouseEvent)
namespace ScxmlEditor {
namespace PluginInterface {
class CornerGrabberItem;
class HighlightItem;
class QuickTransitionItem;
/**
* @brief The ConnectableItem class is the base class for all draggable state-items.
*/
class ConnectableItem : public BaseItem
{
Q_OBJECT
public:
explicit ConnectableItem(const QPointF &pos, BaseItem *parent = nullptr);
~ConnectableItem() override;
QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
bool sceneEventFilter(QGraphicsItem *watched, QEvent *event) override;
void addOutputTransition(TransitionItem *transition);
void addInputTransition(TransitionItem *transition);
void removeOutputTransition(TransitionItem *transition);
void removeInputTransition(TransitionItem *transition);
QVector<TransitionItem*> outputTransitions() const;
QVector<TransitionItem*> inputTransitions() const;
void setMinimumWidth(int width);
void setMinimumHeight(int height);
int minHeight() const
{
return m_minimumHeight;
}
int minWidth() const
{
return m_minimumWidth;
}
void finalizeCreation() override;
void init(ScxmlTag *tag, BaseItem *parentItem = nullptr, bool initChildren = true, bool blockUpdates = false) override;
void updateUIProperties() override;
void updateAttributes() override;
void updateEditorInfo(bool allChildren = false) override;
void moveStateBy(qreal dx, qreal dy) override;
void setHighlight(bool hl) override;
int transitionCount() const;
int outputTransitionCount() const;
int inputTransitionCount() const;
bool hasInputTransitions(const ConnectableItem *parentItem, bool checkChildren = false) const;
bool hasOutputTransitions(const ConnectableItem *parentItem, bool checkChildren = false) const;
QPointF getInternalPosition(const TransitionItem *transition, TransitionItem::TransitionTargetType type) const;
void updateOutputTransitions();
void updateInputTransitions();
void updateTransitions(bool allChildren = false);
void updateTransitionAttributes(bool allChildren = false);
void addOverlappingItem(ConnectableItem *item);
void removeOverlappingItem(ConnectableItem *item);
void checkOverlapping() override;
// Parent change
virtual void releaseFromParent();
virtual void connectToParent(BaseItem *parentItem);
qreal getOpacity();
protected:
void readUISpecifiedProperties(const ScxmlTag *tag) override;
void addTransitions(const ScxmlTag *tag);
void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
virtual bool canStartTransition(ItemType type) const;
virtual void transitionCountChanged();
virtual void transitionsChanged();
private:
void updateCornerPositions();
void createCorners();
void removeCorners();
void updateShadowClipRegion();
QVector<TransitionItem*> m_outputTransitions;
QVector<TransitionItem*> m_inputTransitions;
QVector<CornerGrabberItem*> m_corners;
QVector<QuickTransitionItem*> m_quickTransitions;
HighlightItem *m_highlighItem = nullptr;
TransitionItem *m_newTransition = nullptr;
QPen m_selectedPen;
QBrush m_releasedFromParentBrush;
int m_minimumWidth = 120;
int m_minimumHeight = 100;
bool m_releasedFromParent = false;
int m_releasedIndex = -1;
QGraphicsItem *m_releasedParent = nullptr;
QPointF m_newTransitionStartedPoint;
QPainterPath m_shadowClipPath;
QPointF m_moveStartPoint;
bool m_moveMacroStarted = false;
QVector<ConnectableItem*> m_overlappedItems;
};
} // namespace PluginInterface
} // namespace ScxmlEditor
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