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39
40#ifndef QPIXMAPCACHE_H
41#define QPIXMAPCACHE_H
42
43#include <QtGui/qtguiglobal.h>
44#include <QtGui/qpixmap.h>
45
46QT_BEGIN_NAMESPACE
47
48
49class Q_GUI_EXPORT QPixmapCache
50{
51public:
52 class KeyData;
53 class Q_GUI_EXPORT Key
54 {
55 public:
56 Key();
57 Key(const Key &other);
58 Key(Key &&other) noexcept : d(other.d) { other.d = nullptr; }
59 Key &operator =(Key &&other) noexcept { swap(other); return *this; }
60 ~Key();
61 bool operator ==(const Key &key) const;
62 inline bool operator !=(const Key &key) const
63 { return !operator==(key); }
64 Key &operator =(const Key &other);
65
66 void swap(Key &other) noexcept { qSwap(value1&: d, value2&: other.d); }
67 bool isValid() const noexcept;
68
69 private:
70 KeyData *d;
71 friend class QPMCache;
72 friend class QPixmapCache;
73 };
74
75 static int cacheLimit();
76 static void setCacheLimit(int);
77#if QT_DEPRECATED_SINCE(5, 13)
78 QT_DEPRECATED_X("Use bool find(const QString &, QPixmap *) instead")
79 static QPixmap *find(const QString &key);
80 QT_DEPRECATED_X("Use bool find(const QString &, QPixmap *) instead")
81 static bool find(const QString &key, QPixmap &pixmap);
82#endif
83 static bool find(const QString &key, QPixmap *pixmap);
84 static bool find(const Key &key, QPixmap *pixmap);
85 static bool insert(const QString &key, const QPixmap &pixmap);
86 static Key insert(const QPixmap &pixmap);
87 static bool replace(const Key &key, const QPixmap &pixmap);
88 static void remove(const QString &key);
89 static void remove(const Key &key);
90 static void clear();
91
92#ifdef Q_TEST_QPIXMAPCACHE
93 static void flushDetachedPixmaps();
94 static int totalUsed();
95#endif
96};
97Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QPixmapCache::Key)
98
99QT_END_NAMESPACE
100
101#endif // QPIXMAPCACHE_H
102

source code of qtbase/src/gui/image/qpixmapcache.h