summaryrefslogtreecommitdiffstats
path: root/src/quick/items/qquickpathview_p_p.h
blob: d58c986d1afc4126e418d0345b9e496768140042 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
/****************************************************************************
**
** 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 requestedOnPath : 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