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39
40#ifndef QIMAGEPIXMAP_CLEANUPHOOKS_P_H
41#define QIMAGEPIXMAP_CLEANUPHOOKS_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtGui/private/qtguiglobal_p.h>
55#include <QtGui/qpixmap.h>
56
57QT_BEGIN_NAMESPACE
58
59typedef void (*_qt_image_cleanup_hook_64)(qint64);
60typedef void (*_qt_pixmap_cleanup_hook_pmd)(QPlatformPixmap*);
61
62
63class QImagePixmapCleanupHooks;
64
65class Q_GUI_EXPORT QImagePixmapCleanupHooks
66{
67public:
68 static QImagePixmapCleanupHooks *instance();
69
70 static void enableCleanupHooks(const QImage &image);
71 static void enableCleanupHooks(const QPixmap &pixmap);
72 static void enableCleanupHooks(QPlatformPixmap *handle);
73
74 static bool isImageCached(const QImage &image);
75 static bool isPixmapCached(const QPixmap &pixmap);
76
77 // Gets called when a pixmap data is about to be modified:
78 void addPlatformPixmapModificationHook(_qt_pixmap_cleanup_hook_pmd);
79
80 // Gets called when a pixmap data is about to be destroyed:
81 void addPlatformPixmapDestructionHook(_qt_pixmap_cleanup_hook_pmd);
82
83 // Gets called when an image is about to be modified or destroyed:
84 void addImageHook(_qt_image_cleanup_hook_64);
85
86 void removePlatformPixmapModificationHook(_qt_pixmap_cleanup_hook_pmd);
87 void removePlatformPixmapDestructionHook(_qt_pixmap_cleanup_hook_pmd);
88 void removeImageHook(_qt_image_cleanup_hook_64);
89
90 static void executePlatformPixmapModificationHooks(QPlatformPixmap*);
91 static void executePlatformPixmapDestructionHooks(QPlatformPixmap*);
92 static void executeImageHooks(qint64 key);
93
94private:
95 QList<_qt_image_cleanup_hook_64> imageHooks;
96 QList<_qt_pixmap_cleanup_hook_pmd> pixmapModificationHooks;
97 QList<_qt_pixmap_cleanup_hook_pmd> pixmapDestructionHooks;
98};
99
100QT_END_NAMESPACE
101
102#endif // QIMAGEPIXMAP_CLEANUPHOOKS_P_H
103