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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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