// 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 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_