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/****************************************************************************
**
** Copyright (C) 2016 Jochen Becher
** 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 <QGraphicsItem>
#include <QVector>
QT_BEGIN_NAMESPACE
class QGraphicsRectItem;
QT_END_NAMESPACE
namespace qmt {
class IResizable;
class RectangularSelectionItem : public QGraphicsItem
{
class GraphicsHandleItem;
friend class GraphicsHandleItem;
enum HandleStatus {
Press,
Move,
Release,
Cancel
};
enum HandleQualifier {
None,
KeepPos
};
public:
enum Handle {
HandleNone = -1,
HandleFirst = 0,
HandleTopLeft = HandleFirst,
HandleTop,
HandleTopRight,
HandleLeft,
HandleRight,
HandleBottomLeft,
HandleBottom,
HandleBottomRight,
HandleLast = HandleBottomRight
};
enum Freedom {
FreedomAny,
FreedomVerticalOnly,
FreedomHorizontalOnly,
FreedomKeepRatio
};
explicit RectangularSelectionItem(IResizable *itemResizer, QGraphicsItem *parent = nullptr);
~RectangularSelectionItem() override;
QRectF boundingRect() const override;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
QRectF rect() const { return m_rect; }
void setRect(const QRectF &rectangle);
void setRect(qreal x, qreal y, qreal width, qreal height);
QSizeF pointSize() const { return m_pointSize; }
void setPointSize(const QSizeF &size);
bool showBorder() const { return m_showBorder; }
void setShowBorder(bool showBorder);
Freedom freedom() const { return m_freedom; }
void setFreedom(Freedom freedom);
bool isSecondarySelected() const { return m_isSecondarySelected; }
void setSecondarySelected(bool secondarySelected);
Handle activeHandle() const { return m_activeHandle; }
private:
void update();
void moveHandle(Handle handle, const QPointF &deltaMove, HandleStatus handleStatus,
HandleQualifier handleQualifier);
IResizable *m_itemResizer = nullptr;
QRectF m_rect;
QSizeF m_pointSize;
QVector<GraphicsHandleItem *> m_points;
QPointF m_originalResizePos;
QRectF m_originalResizeRect;
bool m_showBorder = false;
QGraphicsRectItem *m_borderItem = nullptr;
Freedom m_freedom = FreedomAny;
bool m_isSecondarySelected = false;
Handle m_activeHandle = HandleNone;
};
} // namespace qmt
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