1 files changed, 89 insertions, 0 deletions
diff --git a/src/gui/painting/qpageranges.h b/src/gui/painting/qpageranges.h
new file mode 100644
index 0000000000..d0e282fbf2
--- /dev/null
+++ b/src/gui/painting/qpageranges.h
@@ -0,0 +1,89 @@
+// Copyright (C) 2020 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 QPAGERANGES_H
+#define QPAGERANGES_H
+
+#include <QtGui/qtguiglobal.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qshareddata.h>
+#include <QtCore/qmetatype.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDebug;
+class QDataStream;
+class QPageRangesPrivate;
+QT_DECLARE_QESDP_SPECIALIZATION_DTOR_WITH_EXPORT(QPageRangesPrivate, Q_GUI_EXPORT)
+
+class Q_GUI_EXPORT QPageRanges
+{
+public:
+    QPageRanges();
+    ~QPageRanges();
+
+    QPageRanges(const QPageRanges &other) noexcept;
+    QPageRanges &operator=(const QPageRanges &other) noexcept;
+
+    QPageRanges(QPageRanges &&other) noexcept = default;
+    QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(QPageRanges)
+    void swap(QPageRanges &other) noexcept
+    { d.swap(other.d); }
+
+    friend bool operator==(const QPageRanges &lhs, const QPageRanges &rhs) noexcept
+    { return lhs.isEqual(rhs); }
+    friend bool operator!=(const QPageRanges &lhs, const QPageRanges &rhs) noexcept
+    { return !lhs.isEqual(rhs); }
+
+    struct Range {
+        int from = -1;
+        int to = -1;
+        bool contains(int pageNumber) const noexcept
+        { return from <= pageNumber && to >= pageNumber; }
+        friend bool operator==(Range lhs, Range rhs) noexcept
+        { return lhs.from == rhs.from && lhs.to == rhs.to; }
+        friend bool operator!=(Range lhs, Range rhs) noexcept
+        { return !(lhs == rhs); }
+        friend bool operator<(Range lhs, Range rhs) noexcept
+        { return lhs.from < rhs.from || (!(rhs.from < lhs.from) && lhs.to < rhs.to); }
+    };
+
+    void addPage(int pageNumber);
+    void addRange(int from, int to);
+    QList<Range> toRangeList() const;
+    void clear();
+
+    QString toString() const;
+    static QPageRanges fromString(const QString &ranges);
+
+    bool contains(int pageNumber) const;
+    bool isEmpty() const;
+    int firstPage() const;
+    int lastPage() const;
+
+    void detach();
+
+private:
+    bool isEqual(const QPageRanges &other) const noexcept;
+
+    QExplicitlySharedDataPointer<QPageRangesPrivate> d;
+};
+
+#ifndef QT_NO_DATASTREAM
+Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPageRanges &);
+Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPageRanges &);
+#endif
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QPageRanges &pageRanges);
+#endif
+
+Q_DECLARE_SHARED(QPageRanges)
+Q_DECLARE_TYPEINFO(QPageRanges::Range, Q_RELOCATABLE_TYPE);
+
+QT_END_NAMESPACE
+
+QT_DECL_METATYPE_EXTERN(QPageRanges, Q_GUI_EXPORT)
+
+#endif // QPAGERANGES_H