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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PDF_PAGE_ORIENTATION_H_
#define PDF_PAGE_ORIENTATION_H_
#include <cstdint>
namespace chrome_pdf {
// Enumeration of allowed page orientations. Assigned values permit simple
// modular arithmetic on orientations.
enum class PageOrientation : uint8_t {
// Original orientation.
kOriginal = 0,
// Rotated clockwise 90 degrees.
kClockwise90 = 1,
// Rotated (clockwise) 180 degrees.
kClockwise180 = 2,
// Rotated clockwise 270 degrees (counterclockwise 90 degrees).
kClockwise270 = 3,
// Last enumeration value.
kLast = kClockwise270
};
// Rotates a page orientation clockwise by one step (90 degrees).
PageOrientation RotateClockwise(PageOrientation orientation);
// Rotates a page orientation counterclockwise by one step (90 degrees).
PageOrientation RotateCounterclockwise(PageOrientation orientation);
} // namespace chrome_pdf
#endif // PDF_PAGE_ORIENTATION_H_
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