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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 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 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef ZOOMTOOL_H
#define ZOOMTOOL_H
#include "abstracttool.h"
#include <QtCore/QPointF>
#include <QtCore/QPointer>
QT_FORWARD_DECLARE_CLASS(QQuickView)
QT_FORWARD_DECLARE_CLASS(QQuickItem)
namespace QmlJSDebugger {
namespace QtQuick2 {
class QQuickViewInspector;
class ZoomTool : public AbstractTool
{
Q_OBJECT
public:
enum ZoomDirection {
ZoomIn,
ZoomOut
};
explicit ZoomTool(QQuickViewInspector *inspector, QQuickView *view);
virtual ~ZoomTool();
void leaveEvent(QEvent *) {}
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *) {}
void mouseDoubleClickEvent(QMouseEvent *event);
void hoverMoveEvent(QMouseEvent *event);
void wheelEvent(QWheelEvent *event);
void keyPressEvent(QKeyEvent *) {}
void keyReleaseEvent(QKeyEvent *event);
void touchEvent(QTouchEvent *event);
private:
qreal nextZoomScale(ZoomDirection direction);
void scaleView(const qreal &factor, const QPointF &newcenter, const QPointF &oldcenter);
void zoomTo100();
void zoomIn();
void zoomOut();
private:
bool m_originalSmooth;
bool m_dragStarted;
bool m_pinchStarted;
QPointer<QQuickItem> m_rootItem;
QPointF m_adjustedOrigin;
QPointF m_dragStartPosition;
QPointF m_mousePosition;
QPointF m_originalPosition;
qreal m_currentScale;
qreal m_smoothScaleFactor;
qreal m_minScale;
qreal m_maxScale;
qreal m_tapScaleCounter;
qreal m_originalScale;
};
} // namespace QtQuick2
} // namespace QmlJSDebugger
#endif // ZOOMTOOL_H
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