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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 QQUICKPATHVIEW_P_P_H
#define QQUICKPATHVIEW_P_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 <private/qtquickglobal_p.h>
QT_REQUIRE_CONFIG(quick_pathview);
#include "qquickpathview_p.h"
#include "qquickitem_p.h"
#include <QtQml/qqml.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qcoreapplication.h>
#include <private/qquickanimation_p_p.h>
#include <private/qqmldelegatemodel_p.h>
#include <private/qquicktimeline_p_p.h>
#include <private/qpodvector_p.h>
QT_BEGIN_NAMESPACE
class QQmlOpenMetaObjectType;
class QQuickPathViewAttached;
class QQuickPathViewPrivate : public QQuickItemPrivate, public QQuickItemChangeListener
{
Q_DECLARE_PUBLIC(QQuickPathView)
public:
QQuickPathViewPrivate();
void init();
void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &) override {
if (change.sizeChange() && (!highlightItem || item != highlightItem)) {
if (QQuickPathViewAttached *att = attached(item))
att->m_percent = -1;
scheduleLayout();
}
}
void scheduleLayout() {
Q_Q(QQuickPathView);
if (!layoutScheduled) {
layoutScheduled = true;
q->polish();
}
}
QQuickItem *getItem(int modelIndex, qreal z = 0, bool async=false);
void releaseItem(QQuickItem *item);
QQuickPathViewAttached *attached(QQuickItem *item);
QQmlOpenMetaObjectType *attachedType();
void clear();
void updateMappedRange();
qreal positionOfIndex(qreal index) const;
bool isInBound(qreal position, qreal lower, qreal upper) const;
void createHighlight();
void updateHighlight();
void setHighlightPosition(qreal pos);
bool isValid() const {
return model && model->count() > 0 && model->isValid() && path;
}
void handleMousePressEvent(QMouseEvent *event);
void handleMouseMoveEvent(QMouseEvent *event);
void handleMouseReleaseEvent(QMouseEvent *);
int calcCurrentIndex();
void createCurrentItem();
void updateCurrent();
static void fixOffsetCallback(void*);
void fixOffset();
void setOffset(qreal offset);
void setAdjustedOffset(qreal offset);
void regenerate();
void updateItem(QQuickItem *, qreal);
enum MovementReason { Other, SetIndex, Mouse };
void snapToIndex(int index, MovementReason reason);
QPointF pointNear(const QPointF &point, qreal *nearPercent=0) const;
void addVelocitySample(qreal v);
qreal calcVelocity() const;
qint64 computeCurrentTime(QInputEvent *event) const;
void setDragging(bool d);
QQuickPath *path;
int currentIndex;
QPointer<QQuickItem> currentItem;
qreal currentItemOffset;
qreal startPc;
QPointF startPoint;
QPointF startPos;
qreal offset;
qreal offsetAdj;
qreal mappedRange;
qreal mappedCache;
bool stealMouse : 1;
bool ownModel : 1;
bool interactive : 1;
bool haveHighlightRange : 1;
bool autoHighlight : 1;
bool highlightUp : 1;
bool layoutScheduled : 1;
bool moving : 1;
bool flicking : 1;
bool dragging : 1;
bool inRequest : 1;
bool delegateValidated : 1;
bool inRefill : 1;
QElapsedTimer timer;
qint64 lastPosTime;
QPointF lastPos;
qreal dragMargin;
qreal deceleration;
qreal maximumFlickVelocity;
QQuickTimeLine tl;
QQuickTimeLineValueProxy<QQuickPathViewPrivate> moveOffset;
int flickDuration;
int pathItems;
int requestedIndex;
int cacheSize;
qreal requestedZ;
QList<QQuickItem *> items;
QList<QQuickItem *> itemCache;
QPointer<QQmlInstanceModel> model;
QVariant modelVariant;
MovementReason moveReason;
QQuickPathView::MovementDirection movementDirection; // default
QQuickPathView::MovementDirection moveDirection; // next movement
QQmlOpenMetaObjectType *attType;
QQmlComponent *highlightComponent;
QQuickItem *highlightItem;
QQuickTimeLineValueProxy<QQuickPathViewPrivate> moveHighlight;
qreal highlightPosition;
qreal highlightRangeStart;
qreal highlightRangeEnd;
QQuickPathView::HighlightRangeMode highlightRangeMode;
int highlightMoveDuration;
int modelCount;
QPODVector<qreal,10> velocityBuffer;
QQuickPathView::SnapMode snapMode;
};
QT_END_NAMESPACE
#endif
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