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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 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.LGPL3 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-3.0.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 (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKPINCHHANDLER_H
#define QQUICKPINCHHANDLER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qquickitem.h"
#include "qevent.h"
#include "qquickmultipointhandler_p.h"
#include <private/qquicktranslate_p.h>
#include "qquickdragaxis_p.h"
QT_BEGIN_NAMESPACE
class Q_AUTOTEST_EXPORT QQuickPinchHandler : public QQuickMultiPointHandler
{
Q_OBJECT
Q_PROPERTY(qreal minimumScale READ minimumScale WRITE setMinimumScale NOTIFY minimumScaleChanged)
Q_PROPERTY(qreal maximumScale READ maximumScale WRITE setMaximumScale NOTIFY maximumScaleChanged)
Q_PROPERTY(qreal minimumRotation READ minimumRotation WRITE setMinimumRotation NOTIFY minimumRotationChanged)
Q_PROPERTY(qreal maximumRotation READ maximumRotation WRITE setMaximumRotation NOTIFY maximumRotationChanged)
Q_PROPERTY(qreal scale READ scale NOTIFY updated)
Q_PROPERTY(qreal activeScale READ activeScale NOTIFY updated)
Q_PROPERTY(qreal rotation READ rotation NOTIFY updated)
Q_PROPERTY(QVector2D translation READ translation NOTIFY updated)
Q_PROPERTY(qreal minimumX READ minimumX WRITE setMinimumX NOTIFY minimumXChanged)
Q_PROPERTY(qreal maximumX READ maximumX WRITE setMaximumX NOTIFY maximumXChanged)
Q_PROPERTY(qreal minimumY READ minimumY WRITE setMinimumY NOTIFY minimumYChanged)
Q_PROPERTY(qreal maximumY READ maximumY WRITE setMaximumY NOTIFY maximumYChanged)
Q_PROPERTY(QQuickDragAxis * xAxis READ xAxis CONSTANT)
Q_PROPERTY(QQuickDragAxis * yAxis READ yAxis CONSTANT)
public:
explicit QQuickPinchHandler(QQuickItem *parent = nullptr);
qreal minimumScale() const { return m_minimumScale; }
void setMinimumScale(qreal minimumScale);
qreal maximumScale() const { return m_maximumScale; }
void setMaximumScale(qreal maximumScale);
qreal minimumRotation() const { return m_minimumRotation; }
void setMinimumRotation(qreal minimumRotation);
qreal maximumRotation() const { return m_maximumRotation; }
void setMaximumRotation(qreal maximumRotation);
QVector2D translation() const { return m_activeTranslation; }
qreal scale() const { return m_accumulatedScale; }
qreal activeScale() const { return m_activeScale; }
qreal rotation() const { return m_activeRotation; }
qreal minimumX() const { return m_minimumX; }
void setMinimumX(qreal minX);
qreal maximumX() const { return m_maximumX; }
void setMaximumX(qreal maxX);
qreal minimumY() const { return m_minimumY; }
void setMinimumY(qreal minY);
qreal maximumY() const { return m_maximumY; }
void setMaximumY(qreal maxY);
QQuickDragAxis *xAxis() { return &m_xAxis; }
QQuickDragAxis *yAxis() { return &m_yAxis; }
signals:
void minimumScaleChanged();
void maximumScaleChanged();
void minimumRotationChanged();
void maximumRotationChanged();
void minimumXChanged();
void maximumXChanged();
void minimumYChanged();
void maximumYChanged();
void updated();
protected:
bool wantsPointerEvent(QQuickPointerEvent *event) override;
void onActiveChanged() override;
void handlePointerEventImpl(QQuickPointerEvent *event) override;
private:
// properties
qreal m_activeScale = 1;
qreal m_accumulatedScale = 1;
qreal m_activeRotation = 0;
QVector2D m_activeTranslation = QVector2D(0, 0);
qreal m_minimumScale = -qInf();
qreal m_maximumScale = qInf();
qreal m_minimumRotation = -qInf();
qreal m_maximumRotation = qInf();
qreal m_minimumX = -qInf();
qreal m_maximumX = qInf();
qreal m_minimumY = -qInf();
qreal m_maximumY = qInf();
QQuickDragAxis m_xAxis;
QQuickDragAxis m_yAxis;
// internal
qreal m_startScale = 1;
qreal m_startRotation = 0;
qreal m_startDistance = 0;
QPointF m_startPos;
qreal m_accumulatedStartCentroidDistance = 0;
QVector<PointData> m_startAngles;
QMatrix4x4 m_startMatrix;
QQuickMatrix4x4 m_transform;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QQuickPinchHandler)
#endif // QQUICKPINCHHANDLER_H
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