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Diffstat (limited to 'src/quick/handlers/qquickpinchhandler_p.h')
| -rw-r--r-- | src/quick/handlers/qquickpinchhandler_p.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/quick/handlers/qquickpinchhandler_p.h b/src/quick/handlers/qquickpinchhandler_p.h new file mode 100644 index 0000000000..7d6b7d9509 --- /dev/null +++ b/src/quick/handlers/qquickpinchhandler_p.h @@ -0,0 +1,173 @@ +/**************************************************************************** +** +** 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> + +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(PinchOrigin pinchOrigin READ pinchOrigin WRITE setPinchOrigin NOTIFY pinchOriginChanged) + Q_PROPERTY(QPointF centroid READ centroid NOTIFY updated) + Q_PROPERTY(QVector2D centroidVelocity READ centroidVelocity NOTIFY updated) + Q_PROPERTY(qreal scale READ scale 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) + +public: + enum PinchOrigin { + FirstPoint, PinchCenter, TargetCenter + }; + Q_ENUM(PinchOrigin) + + explicit QQuickPinchHandler(QObject *parent = 0); + ~QQuickPinchHandler(); + + 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); + + PinchOrigin pinchOrigin() const { return m_pinchOrigin; } + void setPinchOrigin(PinchOrigin pinchOrigin); + + QVector2D translation() const { return m_activeTranslation; } + qreal scale() const { return m_activeScale; } + qreal rotation() const { return m_activeRotation; } + QPointF centroid() const { return m_centroid; } + QVector2D centroidVelocity() const { return m_centroidVelocity; } + + 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); + +signals: + void minimumScaleChanged(); + void maximumScaleChanged(); + void minimumRotationChanged(); + void maximumRotationChanged(); + void minimumXChanged(); + void maximumXChanged(); + void minimumYChanged(); + void maximumYChanged(); + void pinchOriginChanged(); + void updated(); + +protected: + bool wantsPointerEvent(QQuickPointerEvent *event) override; + void onActiveChanged() override; + void handlePointerEventImpl(QQuickPointerEvent *event) override; + +private: + // properties + qreal m_activeScale; + qreal m_activeRotation; + QVector2D m_activeTranslation; + QPointF m_centroid; + QVector2D m_centroidVelocity; + + qreal m_minimumScale; + qreal m_maximumScale; + + qreal m_minimumRotation; + qreal m_maximumRotation; + + qreal m_minimumX; + qreal m_maximumX; + qreal m_minimumY; + qreal m_maximumY; + + PinchOrigin m_pinchOrigin; + + // internal + qreal m_startScale; + qreal m_startRotation; + QPointF m_startCentroid; + qreal m_startDistance; + QPointF m_startPos; + + QVector<PointData> m_startAngles; + QMatrix4x4 m_startMatrix; + QQuickMatrix4x4 m_transform; + +}; + +QT_END_NAMESPACE + +QML_DECLARE_TYPE(QQuickPinchHandler) + +#endif // QQUICKPINCHHANDLER_H |