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
|
// 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
//
// 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.
//
#ifndef QGRAPHICSBSPTREEINDEX_H
#define QGRAPHICSBSPTREEINDEX_H
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include "qgraphicssceneindex_p.h"
#include "qgraphicsitem_p.h"
#include "qgraphicsscene_bsp_p.h"
#include <QtCore/qrect.h>
#include <QtCore/qlist.h>
QT_REQUIRE_CONFIG(graphicsview);
QT_BEGIN_NAMESPACE
static const int QGRAPHICSSCENE_INDEXTIMER_TIMEOUT = 2000;
class QGraphicsScene;
class QGraphicsSceneBspTreeIndexPrivate;
class Q_AUTOTEST_EXPORT QGraphicsSceneBspTreeIndex : public QGraphicsSceneIndex
{
Q_OBJECT
Q_PROPERTY(int bspTreeDepth READ bspTreeDepth WRITE setBspTreeDepth)
public:
QGraphicsSceneBspTreeIndex(QGraphicsScene *scene = nullptr);
~QGraphicsSceneBspTreeIndex();
QList<QGraphicsItem *> estimateItems(const QRectF &rect, Qt::SortOrder order) const override;
QList<QGraphicsItem *> estimateTopLevelItems(const QRectF &rect, Qt::SortOrder order) const override;
QList<QGraphicsItem *> items(Qt::SortOrder order = Qt::DescendingOrder) const override;
int bspTreeDepth() const;
void setBspTreeDepth(int depth);
protected Q_SLOTS:
void updateSceneRect(const QRectF &rect) override;
protected:
bool event(QEvent *event) override;
void clear() override;
void addItem(QGraphicsItem *item) override;
void removeItem(QGraphicsItem *item) override;
void prepareBoundingRectChange(const QGraphicsItem *item) override;
void itemChange(const QGraphicsItem *item, QGraphicsItem::GraphicsItemChange change, const void *const value) override;
private :
Q_DECLARE_PRIVATE(QGraphicsSceneBspTreeIndex)
Q_DISABLE_COPY_MOVE(QGraphicsSceneBspTreeIndex)
Q_PRIVATE_SLOT(d_func(), void _q_updateSortCache())
Q_PRIVATE_SLOT(d_func(), void _q_updateIndex())
friend class QGraphicsScene;
friend class QGraphicsScenePrivate;
};
class QGraphicsSceneBspTreeIndexPrivate : public QGraphicsSceneIndexPrivate
{
Q_DECLARE_PUBLIC(QGraphicsSceneBspTreeIndex)
public:
QGraphicsSceneBspTreeIndexPrivate(QGraphicsScene *scene);
QGraphicsSceneBspTree bsp;
QRectF sceneRect;
int bspTreeDepth;
int indexTimerId;
bool restartIndexTimer;
bool regenerateIndex;
int lastItemCount;
QList<QGraphicsItem *> indexedItems;
QList<QGraphicsItem *> unindexedItems;
QList<QGraphicsItem *> untransformableItems;
QList<int> freeItemIndexes;
bool purgePending;
QSet<QGraphicsItem *> removedItems;
void purgeRemovedItems();
void _q_updateIndex();
void startIndexTimer(int interval = QGRAPHICSSCENE_INDEXTIMER_TIMEOUT);
void resetIndex();
void _q_updateSortCache();
bool sortCacheEnabled;
bool updatingSortCache;
void invalidateSortCache();
void addItem(QGraphicsItem *item, bool recursive = false);
void removeItem(QGraphicsItem *item, bool recursive = false, bool moveToUnindexedItems = false);
QList<QGraphicsItem *> estimateItems(const QRectF &, Qt::SortOrder, bool b = false);
static void climbTree(QGraphicsItem *item, int *stackingOrder);
static inline bool closestItemFirst_withCache(const QGraphicsItem *item1, const QGraphicsItem *item2)
{
return item1->d_ptr->globalStackingOrder < item2->d_ptr->globalStackingOrder;
}
static inline bool closestItemLast_withCache(const QGraphicsItem *item1, const QGraphicsItem *item2)
{
return item1->d_ptr->globalStackingOrder >= item2->d_ptr->globalStackingOrder;
}
static void sortItems(QList<QGraphicsItem *> *itemList, Qt::SortOrder order,
bool cached, bool onlyTopLevelItems = false);
};
static inline bool QRectF_intersects(const QRectF &s, const QRectF &r)
{
qreal xp = s.left();
qreal yp = s.top();
qreal w = s.width();
qreal h = s.height();
qreal l1 = xp;
qreal r1 = xp;
if (w < 0)
l1 += w;
else
r1 += w;
qreal l2 = r.left();
qreal r2 = r.left();
if (w < 0)
l2 += r.width();
else
r2 += r.width();
if (l1 >= r2 || l2 >= r1)
return false;
qreal t1 = yp;
qreal b1 = yp;
if (h < 0)
t1 += h;
else
b1 += h;
qreal t2 = r.top();
qreal b2 = r.top();
if (r.height() < 0)
t2 += r.height();
else
b2 += r.height();
return !(t1 >= b2 || t2 >= b1);
}
QT_END_NAMESPACE
#endif // QGRAPHICSBSPTREEINDEX_H
|
