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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtDeclarative 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVEPATHVIEW_P_H
#define QDECLARATIVEPATHVIEW_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/qdeclarativepathview_p.h"
#include "private/qdeclarativeitem_p.h"
#include "private/qdeclarativevisualitemmodel_p.h"
#include <qdeclarative.h>
#include <qdeclarativeanimation_p_p.h>
#include <qdeclarativeguard_p.h>
#include <qdatetime.h>
QT_BEGIN_NAMESPACE
class QDeclarativeOpenMetaObjectType;
class QDeclarativePathViewAttached;
class QDeclarativePathViewPrivate : public QDeclarativeItemPrivate, public QDeclarativeItemChangeListener
{
Q_DECLARE_PUBLIC(QDeclarativePathView)
public:
QDeclarativePathViewPrivate()
: path(0), currentIndex(0), currentItemOffset(0.0), startPc(0), lastDist(0)
, lastElapsed(0), offset(0.0), offsetAdj(0.0), mappedRange(1.0)
, stealMouse(false), ownModel(false), interactive(true), haveHighlightRange(true)
, autoHighlight(true), highlightUp(false), layoutScheduled(false)
, moving(false), flicking(false)
, dragMargin(0), deceleration(100)
, moveOffset(this, &QDeclarativePathViewPrivate::setAdjustedOffset)
, firstIndex(-1), pathItems(-1), requestedIndex(-1)
, moveReason(Other), moveDirection(Shortest), attType(0), highlightComponent(0), highlightItem(0)
, moveHighlight(this, &QDeclarativePathViewPrivate::setHighlightPosition)
, highlightPosition(0)
, highlightRangeStart(0), highlightRangeEnd(0)
, highlightRangeMode(QDeclarativePathView::StrictlyEnforceRange)
, highlightMoveDuration(300), modelCount(0)
{
}
void init();
void itemGeometryChanged(QDeclarativeItem *item, const QRectF &newGeometry, const QRectF &oldGeometry) {
if ((newGeometry.size() != oldGeometry.size())
&& (!highlightItem || item != highlightItem)) {
if (QDeclarativePathViewAttached *att = attached(item))
att->m_percent = -1;
scheduleLayout();
}
}
void scheduleLayout() {
Q_Q(QDeclarativePathView);
if (!layoutScheduled) {
layoutScheduled = true;
QCoreApplication::postEvent(q, new QEvent(QEvent::User), Qt::HighEventPriority);
}
}
QDeclarativeItem *getItem(int modelIndex);
void releaseItem(QDeclarativeItem *item);
QDeclarativePathViewAttached *attached(QDeclarativeItem *item);
void clear();
void updateMappedRange();
qreal positionOfIndex(qreal index) const;
void createHighlight();
void updateHighlight();
void setHighlightPosition(qreal pos);
bool isValid() const {
return model && model->count() > 0 && model->isValid() && path;
}
void handleMousePressEvent(QGraphicsSceneMouseEvent *event);
void handleMouseMoveEvent(QGraphicsSceneMouseEvent *event);
void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *);
int calcCurrentIndex();
void updateCurrent();
static void fixOffsetCallback(void*);
void fixOffset();
void setOffset(qreal offset);
void setAdjustedOffset(qreal offset);
void regenerate();
void updateItem(QDeclarativeItem *, qreal);
void snapToCurrent();
QPointF pointNear(const QPointF &point, qreal *nearPercent=0) const;
QDeclarativePath *path;
int currentIndex;
QDeclarativeGuard<QDeclarativeItem> currentItem;
qreal currentItemOffset;
qreal startPc;
QPointF startPoint;
qreal lastDist;
int lastElapsed;
qreal offset;
qreal offsetAdj;
qreal mappedRange;
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;
QElapsedTimer lastPosTime;
QPointF lastPos;
qreal dragMargin;
qreal deceleration;
QDeclarativeTimeLine tl;
QDeclarativeTimeLineValueProxy<QDeclarativePathViewPrivate> moveOffset;
int firstIndex;
int pathItems;
int requestedIndex;
QList<QDeclarativeItem *> items;
QList<QDeclarativeItem *> itemCache;
QDeclarativeGuard<QDeclarativeVisualModel> model;
QVariant modelVariant;
enum MovementReason { Other, SetIndex, Mouse };
MovementReason moveReason;
enum MovementDirection { Shortest, Negative, Positive };
MovementDirection moveDirection;
QDeclarativeOpenMetaObjectType *attType;
QDeclarativeComponent *highlightComponent;
QDeclarativeItem *highlightItem;
QDeclarativeTimeLineValueProxy<QDeclarativePathViewPrivate> moveHighlight;
qreal highlightPosition;
qreal highlightRangeStart;
qreal highlightRangeEnd;
QDeclarativePathView::HighlightRangeMode highlightRangeMode;
int highlightMoveDuration;
int modelCount;
};
QT_END_NAMESPACE
#endif
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