1 files changed, 62 insertions, 0 deletions
diff --git a/src/gui/image/qabstractfileiconengine_p.h b/src/gui/image/qabstractfileiconengine_p.h
new file mode 100644
index 0000000000..99d16d3224
--- /dev/null
+++ b/src/gui/image/qabstractfileiconengine_p.h
@@ -0,0 +1,62 @@
+// 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
+
+#ifndef QABSTRACTFILEICONENGINE_P_H
+#define QABSTRACTFILEICONENGINE_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 <QtCore/qfileinfo.h>
+#include <private/qicon_p.h>
+#include <qpa/qplatformtheme.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_GUI_EXPORT QAbstractFileIconEngine : public QPixmapIconEngine
+{
+public:
+    explicit QAbstractFileIconEngine(const QFileInfo &info, QPlatformTheme::IconOptions opts)
+        : QPixmapIconEngine(), m_fileInfo(info), m_options(opts) {}
+
+    QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State) override;
+    QPixmap scaledPixmap(const QSize &size, QIcon::Mode mode, QIcon::State, qreal scale) override;
+    QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) override;
+    bool isNull() override { return false; }
+
+    QFileInfo fileInfo() const { return m_fileInfo; }
+    QPlatformTheme::IconOptions options() const { return m_options; }
+
+    // Helper to convert a sequence of ints to a list of QSize
+    template <class It> static QList<QSize> toSizeList(It i1, It i2);
+
+protected:
+    virtual QPixmap filePixmap(const QSize &size, QIcon::Mode mode, QIcon::State) = 0;
+    virtual QString cacheKey() const;
+
+private:
+    const QFileInfo m_fileInfo;
+    const QPlatformTheme::IconOptions m_options;
+};
+
+template <class It>
+inline QList<QSize> QAbstractFileIconEngine::toSizeList(It i1, It i2)
+{
+    QList<QSize> result;
+    result.reserve(int(i2 - i1));
+    for ( ; i1 != i2; ++i1)
+        result.append(QSize(*i1, *i1));
+    return result;
+}
+
+QT_END_NAMESPACE
+
+#endif // QABSTRACTFILEICONENGINE_P_H