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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QGRAPHICSSCENEINDEX_H
#define QGRAPHICSSCENEINDEX_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include "qgraphicsscene_p.h"
#include "qgraphicsscene.h"
#include <private/qobject_p.h>
#include <QtCore/qnamespace.h>
#include <QtCore/qobject.h>
#include <QtGui/qtransform.h>
QT_REQUIRE_CONFIG(graphicsview);
QT_BEGIN_NAMESPACE
class QGraphicsSceneIndexPrivate;
class QPointF;
class QRectF;
typedef bool (*QGraphicsSceneIndexIntersector)(const QGraphicsItem *item, const QRectF &exposeRect, Qt::ItemSelectionMode mode,
const QTransform &deviceTransform, const void *data);
class Q_AUTOTEST_EXPORT QGraphicsSceneIndex : public QObject
{
Q_OBJECT
public:
QGraphicsSceneIndex(QGraphicsScene *scene = nullptr);
virtual ~QGraphicsSceneIndex();
QGraphicsScene *scene() const;
virtual QList<QGraphicsItem *> items(Qt::SortOrder order = Qt::DescendingOrder) const = 0;
virtual QList<QGraphicsItem *> items(const QPointF &pos, Qt::ItemSelectionMode mode,
Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> items(const QRectF &rect, Qt::ItemSelectionMode mode,
Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> items(const QPolygonF &polygon, Qt::ItemSelectionMode mode,
Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode,
Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> estimateItems(const QPointF &point, Qt::SortOrder order) const;
virtual QList<QGraphicsItem *> estimateItems(const QRectF &rect, Qt::SortOrder order) const = 0;
virtual QList<QGraphicsItem *> estimateTopLevelItems(const QRectF &, Qt::SortOrder order) const;
protected Q_SLOTS:
virtual void updateSceneRect(const QRectF &rect);
protected:
virtual void clear();
virtual void addItem(QGraphicsItem *item) = 0;
virtual void removeItem(QGraphicsItem *item) = 0;
virtual void deleteItem(QGraphicsItem *item);
virtual void itemChange(const QGraphicsItem *item, QGraphicsItem::GraphicsItemChange, const void *const value);
virtual void prepareBoundingRectChange(const QGraphicsItem *item);
QGraphicsSceneIndex(QGraphicsSceneIndexPrivate &dd, QGraphicsScene *scene);
friend class QGraphicsScene;
friend class QGraphicsScenePrivate;
friend class QGraphicsItem;
friend class QGraphicsItemPrivate;
friend class QGraphicsSceneBspTreeIndex;
private:
Q_DISABLE_COPY_MOVE(QGraphicsSceneIndex)
Q_DECLARE_PRIVATE(QGraphicsSceneIndex)
};
class QGraphicsSceneIndexPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QGraphicsSceneIndex)
public:
QGraphicsSceneIndexPrivate(QGraphicsScene *scene);
~QGraphicsSceneIndexPrivate();
void init();
static bool itemCollidesWithPath(const QGraphicsItem *item, const QPainterPath &path, Qt::ItemSelectionMode mode);
void recursive_items_helper(QGraphicsItem *item, QRectF exposeRect,
QGraphicsSceneIndexIntersector intersect, QList<QGraphicsItem *> *items,
const QTransform &viewTransform,
Qt::ItemSelectionMode mode, qreal parentOpacity, const void *intersectData) const;
inline void items_helper(const QRectF &rect, QGraphicsSceneIndexIntersector intersect,
QList<QGraphicsItem *> *items, const QTransform &viewTransform,
Qt::ItemSelectionMode mode, Qt::SortOrder order, const void *intersectData) const;
QGraphicsScene *scene;
};
inline void QGraphicsSceneIndexPrivate::items_helper(const QRectF &rect, QGraphicsSceneIndexIntersector intersect,
QList<QGraphicsItem *> *items, const QTransform &viewTransform,
Qt::ItemSelectionMode mode, Qt::SortOrder order, const void *intersectData) const
{
Q_Q(const QGraphicsSceneIndex);
const QList<QGraphicsItem *> tli = q->estimateTopLevelItems(rect, Qt::AscendingOrder);
for (int i = 0; i < tli.size(); ++i)
recursive_items_helper(tli.at(i), rect, intersect, items, viewTransform, mode, 1.0, intersectData);
if (order == Qt::DescendingOrder) {
const int n = items->size();
for (int i = 0; i < n / 2; ++i)
items->swapItemsAt(i, n - i - 1);
}
}
QT_END_NAMESPACE
#endif // QGRAPHICSSCENEINDEX_H
|
