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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 QQUICKFLICKABLE_P_H
#define QQUICKFLICKABLE_P_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 <private/qtquickglobal_p.h>
QT_BEGIN_NAMESPACE
class QQuickFlickablePrivate;
class QQuickFlickableVisibleArea;
class Q_QUICK_PRIVATE_EXPORT QQuickFlickable : public QQuickItem
{
Q_OBJECT
Q_PROPERTY(qreal contentWidth READ contentWidth WRITE setContentWidth NOTIFY contentWidthChanged)
Q_PROPERTY(qreal contentHeight READ contentHeight WRITE setContentHeight NOTIFY contentHeightChanged)
Q_PROPERTY(qreal contentX READ contentX WRITE setContentX NOTIFY contentXChanged)
Q_PROPERTY(qreal contentY READ contentY WRITE setContentY NOTIFY contentYChanged)
Q_PROPERTY(QQuickItem *contentItem READ contentItem CONSTANT)
Q_PROPERTY(qreal topMargin READ topMargin WRITE setTopMargin NOTIFY topMarginChanged)
Q_PROPERTY(qreal bottomMargin READ bottomMargin WRITE setBottomMargin NOTIFY bottomMarginChanged)
Q_PROPERTY(qreal originY READ originY NOTIFY originYChanged)
Q_PROPERTY(qreal leftMargin READ leftMargin WRITE setLeftMargin NOTIFY leftMarginChanged)
Q_PROPERTY(qreal rightMargin READ rightMargin WRITE setRightMargin NOTIFY rightMarginChanged)
Q_PROPERTY(qreal originX READ originX NOTIFY originXChanged)
Q_PROPERTY(qreal horizontalVelocity READ horizontalVelocity NOTIFY horizontalVelocityChanged)
Q_PROPERTY(qreal verticalVelocity READ verticalVelocity NOTIFY verticalVelocityChanged)
Q_PROPERTY(BoundsBehavior boundsBehavior READ boundsBehavior WRITE setBoundsBehavior NOTIFY boundsBehaviorChanged)
Q_PROPERTY(BoundsMovement boundsMovement READ boundsMovement WRITE setBoundsMovement NOTIFY boundsMovementChanged REVISION 10)
Q_PROPERTY(QQuickTransition *rebound READ rebound WRITE setRebound NOTIFY reboundChanged)
Q_PROPERTY(qreal maximumFlickVelocity READ maximumFlickVelocity WRITE setMaximumFlickVelocity NOTIFY maximumFlickVelocityChanged)
Q_PROPERTY(qreal flickDeceleration READ flickDeceleration WRITE setFlickDeceleration NOTIFY flickDecelerationChanged)
Q_PROPERTY(bool moving READ isMoving NOTIFY movingChanged)
Q_PROPERTY(bool movingHorizontally READ isMovingHorizontally NOTIFY movingHorizontallyChanged)
Q_PROPERTY(bool movingVertically READ isMovingVertically NOTIFY movingVerticallyChanged)
Q_PROPERTY(bool flicking READ isFlicking NOTIFY flickingChanged)
Q_PROPERTY(bool flickingHorizontally READ isFlickingHorizontally NOTIFY flickingHorizontallyChanged)
Q_PROPERTY(bool flickingVertically READ isFlickingVertically NOTIFY flickingVerticallyChanged)
Q_PROPERTY(bool dragging READ isDragging NOTIFY draggingChanged)
Q_PROPERTY(bool draggingHorizontally READ isDraggingHorizontally NOTIFY draggingHorizontallyChanged)
Q_PROPERTY(bool draggingVertically READ isDraggingVertically NOTIFY draggingVerticallyChanged)
Q_PROPERTY(FlickableDirection flickableDirection READ flickableDirection WRITE setFlickableDirection NOTIFY flickableDirectionChanged)
Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive NOTIFY interactiveChanged)
Q_PROPERTY(int pressDelay READ pressDelay WRITE setPressDelay NOTIFY pressDelayChanged)
Q_PROPERTY(bool atXEnd READ isAtXEnd NOTIFY isAtBoundaryChanged)
Q_PROPERTY(bool atYEnd READ isAtYEnd NOTIFY isAtBoundaryChanged)
Q_PROPERTY(bool atXBeginning READ isAtXBeginning NOTIFY isAtBoundaryChanged)
Q_PROPERTY(bool atYBeginning READ isAtYBeginning NOTIFY isAtBoundaryChanged)
Q_PROPERTY(QQuickFlickableVisibleArea *visibleArea READ visibleArea CONSTANT)
Q_PROPERTY(bool pixelAligned READ pixelAligned WRITE setPixelAligned NOTIFY pixelAlignedChanged)
Q_PROPERTY(qreal horizontalOvershoot READ horizontalOvershoot NOTIFY horizontalOvershootChanged REVISION 9)
Q_PROPERTY(qreal verticalOvershoot READ verticalOvershoot NOTIFY verticalOvershootChanged REVISION 9)
Q_PROPERTY(QQmlListProperty<QObject> flickableData READ flickableData)
Q_PROPERTY(QQmlListProperty<QQuickItem> flickableChildren READ flickableChildren)
Q_CLASSINFO("DefaultProperty", "flickableData")
public:
QQuickFlickable(QQuickItem *parent=0);
~QQuickFlickable();
QQmlListProperty<QObject> flickableData();
QQmlListProperty<QQuickItem> flickableChildren();
enum BoundsBehaviorFlag {
StopAtBounds = 0x0,
DragOverBounds = 0x1,
OvershootBounds = 0x2,
DragAndOvershootBounds = DragOverBounds | OvershootBounds
};
Q_DECLARE_FLAGS(BoundsBehavior, BoundsBehaviorFlag)
Q_FLAG(BoundsBehavior)
BoundsBehavior boundsBehavior() const;
void setBoundsBehavior(BoundsBehavior);
enum BoundsMovement {
// StopAtBounds = 0x0,
FollowBoundsBehavior = 0x1
};
Q_ENUM(BoundsMovement)
BoundsMovement boundsMovement() const;
void setBoundsMovement(BoundsMovement movement);
QQuickTransition *rebound() const;
void setRebound(QQuickTransition *transition);
qreal contentWidth() const;
void setContentWidth(qreal);
qreal contentHeight() const;
void setContentHeight(qreal);
qreal contentX() const;
virtual void setContentX(qreal pos);
qreal contentY() const;
virtual void setContentY(qreal pos);
qreal topMargin() const;
void setTopMargin(qreal m);
qreal bottomMargin() const;
void setBottomMargin(qreal m);
qreal leftMargin() const;
void setLeftMargin(qreal m);
qreal rightMargin() const;
void setRightMargin(qreal m);
virtual qreal originY() const;
virtual qreal originX() const;
bool isMoving() const;
bool isMovingHorizontally() const;
bool isMovingVertically() const;
bool isFlicking() const;
bool isFlickingHorizontally() const;
bool isFlickingVertically() const;
bool isDragging() const;
bool isDraggingHorizontally() const;
bool isDraggingVertically() const;
int pressDelay() const;
void setPressDelay(int delay);
qreal maximumFlickVelocity() const;
void setMaximumFlickVelocity(qreal);
qreal flickDeceleration() const;
void setFlickDeceleration(qreal);
bool isInteractive() const;
void setInteractive(bool);
qreal horizontalVelocity() const;
qreal verticalVelocity() const;
bool isAtXEnd() const;
bool isAtXBeginning() const;
bool isAtYEnd() const;
bool isAtYBeginning() const;
QQuickItem *contentItem() const;
enum FlickableDirection { AutoFlickDirection=0x0, HorizontalFlick=0x1, VerticalFlick=0x2, HorizontalAndVerticalFlick=0x3,
AutoFlickIfNeeded=0xc };
Q_ENUM(FlickableDirection)
FlickableDirection flickableDirection() const;
void setFlickableDirection(FlickableDirection);
bool pixelAligned() const;
void setPixelAligned(bool align);
qreal horizontalOvershoot() const;
qreal verticalOvershoot() const;
Q_INVOKABLE void resizeContent(qreal w, qreal h, QPointF center);
Q_INVOKABLE void returnToBounds();
Q_INVOKABLE void flick(qreal xVelocity, qreal yVelocity);
Q_INVOKABLE void cancelFlick();
Q_SIGNALS:
void contentWidthChanged();
void contentHeightChanged();
void contentXChanged();
void contentYChanged();
void topMarginChanged();
void bottomMarginChanged();
void leftMarginChanged();
void rightMarginChanged();
void originYChanged();
void originXChanged();
void movingChanged();
void movingHorizontallyChanged();
void movingVerticallyChanged();
void flickingChanged();
void flickingHorizontallyChanged();
void flickingVerticallyChanged();
void draggingChanged();
void draggingHorizontallyChanged();
void draggingVerticallyChanged();
void horizontalVelocityChanged();
void verticalVelocityChanged();
void isAtBoundaryChanged();
void flickableDirectionChanged();
void interactiveChanged();
void boundsBehaviorChanged();
Q_REVISION(10) void boundsMovementChanged();
void reboundChanged();
void maximumFlickVelocityChanged();
void flickDecelerationChanged();
void pressDelayChanged();
void movementStarted();
void movementEnded();
void flickStarted();
void flickEnded();
void dragStarted();
void dragEnded();
void pixelAlignedChanged();
Q_REVISION(9) void horizontalOvershootChanged();
Q_REVISION(9) void verticalOvershootChanged();
protected:
bool childMouseEventFilter(QQuickItem *, QEvent *) override;
void mousePressEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
#if QT_CONFIG(wheelevent)
void wheelEvent(QWheelEvent *event) override;
#endif
void timerEvent(QTimerEvent *event) override;
QQuickFlickableVisibleArea *visibleArea();
protected Q_SLOTS:
void movementStarting();
void movementEnding();
void movementEnding(bool hMovementEnding, bool vMovementEnding);
void velocityTimelineCompleted();
void timelineCompleted();
protected:
virtual qreal minXExtent() const;
virtual qreal minYExtent() const;
virtual qreal maxXExtent() const;
virtual qreal maxYExtent() const;
qreal vWidth() const;
qreal vHeight() const;
void componentComplete() override;
virtual void viewportMoved(Qt::Orientations orient);
void geometryChanged(const QRectF &newGeometry,
const QRectF &oldGeometry) override;
void mouseUngrabEvent() override;
bool filterMouseEvent(QQuickItem *receiver, QMouseEvent *event);
bool xflick() const;
bool yflick() const;
protected:
QQuickFlickable(QQuickFlickablePrivate &dd, QQuickItem *parent);
private:
Q_DISABLE_COPY(QQuickFlickable)
Q_DECLARE_PRIVATE(QQuickFlickable)
friend class QQuickFlickableContentItem;
friend class QQuickFlickableVisibleArea;
friend class QQuickFlickableReboundTransition;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QQuickFlickable)
#endif // QQUICKFLICKABLE_P_H
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