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39
40#ifndef QPIXMAPCACHE_P_H
41#define QPIXMAPCACHE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. This header
48// file may change from version to version without notice, or even be removed.
49//
50// We mean it.
51//
52
53#include <QtGui/private/qtguiglobal_p.h>
54#include "qpixmapcache.h"
55#include "qpaintengine.h"
56#include <private/qimage_p.h>
57#include <private/qpixmap_raster_p.h>
58#include "qcache.h"
59
60QT_BEGIN_NAMESPACE
61
62uint qHash(const QPixmapCache::Key &k);
63
64class QPixmapCache::KeyData
65{
66public:
67 KeyData() : isValid(true), key(0), ref(1) {}
68 KeyData(const KeyData &other)
69 : isValid(other.isValid), key(other.key), ref(1) {}
70 ~KeyData() {}
71
72 bool isValid;
73 int key;
74 int ref;
75};
76
77// XXX: hw: is this a general concept we need to abstract?
78class QPixmapCacheEntry : public QPixmap
79{
80public:
81 QPixmapCacheEntry(const QPixmapCache::Key &key, const QPixmap &pix) : QPixmap(pix), key(key)
82 {
83 QPlatformPixmap *pd = handle();
84 if (pd && pd->classId() == QPlatformPixmap::RasterClass) {
85 QRasterPlatformPixmap *d = static_cast<QRasterPlatformPixmap*>(pd);
86 if (!d->image.isNull() && d->image.d->paintEngine
87 && !d->image.d->paintEngine->isActive())
88 {
89 delete d->image.d->paintEngine;
90 d->image.d->paintEngine = nullptr;
91 }
92 }
93 }
94 ~QPixmapCacheEntry();
95 QPixmapCache::Key key;
96};
97
98QT_END_NAMESPACE
99
100#endif // QPIXMAPCACHE_P_H
101

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