Refactor QImage/QPixmap cleanup hooks into a seperate class

The new class alows more than one hook to be installed at a time and,
for QPixmaps, the hook is told which pixmap is getting deleted.

Reviewed-By: Samuel

1 files changed, 89 insertions, 0 deletions

diff --git a/src/gui/image/qimagepixmapcleanuphooks_p.h b/src/gui/image/qimagepixmapcleanuphooks_p.h
new file mode 100644
index 0000000..e765e69
--- /dev/null
+++ b/src/gui/image/qimagepixmapcleanuphooks_p.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QIMAGEPIXMAP_CLEANUPHOOKS_P_H
+#define QIMAGEPIXMAP_CLEANUPHOOKS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qpixmap.h>
+
+QT_BEGIN_NAMESPACE
+
+typedef void (*_qt_image_cleanup_hook_64)(qint64);
+typedef void (*_qt_pixmap_cleanup_hook_pm)(QPixmap*);
+
+class QImagePixmapCleanupHooks;
+extern QImagePixmapCleanupHooks* qt_image_and_pixmap_cleanup_hooks;
+
+class Q_GUI_EXPORT QImagePixmapCleanupHooks
+{
+public:
+    QImagePixmapCleanupHooks();
+
+    static QImagePixmapCleanupHooks *instance();
+
+    void addPixmapHook(_qt_pixmap_cleanup_hook_pm);
+    void addImageHook(_qt_image_cleanup_hook_64);
+
+    void removePixmapHook(_qt_pixmap_cleanup_hook_pm);
+    void removeImageHook(_qt_image_cleanup_hook_64);
+
+    static void executePixmapHooks(QPixmap*);
+    static void executeImageHooks(qint64 key);
+
+private:
+    QList<_qt_image_cleanup_hook_64> imageHooks;
+    QList<_qt_pixmap_cleanup_hook_pm> pixmapHooks;
+};
+
+QT_END_NAMESPACE
+
+#endif // QIMAGEPIXMAP_CLEANUPHOOKS_P_H