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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /image/Orientation.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloaduxp-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
Add m-esr52 at 52.6.0
Diffstat (limited to 'image/Orientation.h')
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_image_Orientation_h
+#define mozilla_image_Orientation_h
+
+#include <stdint.h>
+
+namespace mozilla {
+namespace image {
+
+enum class Angle : uint8_t {
+ D0,
+ D90,
+ D180,
+ D270
+};
+
+enum class Flip : uint8_t {
+ Unflipped,
+ Horizontal
+};
+
+/**
+ * A struct that describes an image's orientation as a rotation optionally
+ * followed by a reflection. This may be used to be indicate an image's inherent
+ * orientation or a desired orientation for the image.
+ */
+struct Orientation
+{
+ explicit Orientation(Angle aRotation = Angle::D0,
+ Flip mFlip = Flip::Unflipped)
+ : rotation(aRotation)
+ , flip(mFlip)
+ { }
+
+ bool IsIdentity() const {
+ return (rotation == Angle::D0) && (flip == Flip::Unflipped);
+ }
+
+ bool SwapsWidthAndHeight() const {
+ return (rotation == Angle::D90) || (rotation == Angle::D270);
+ }
+
+ bool operator==(const Orientation& aOther) const {
+ return (rotation == aOther.rotation) && (flip == aOther.flip);
+ }
+
+ bool operator!=(const Orientation& aOther) const {
+ return !(*this == aOther);
+ }
+
+ Angle rotation;
+ Flip flip;
+};
+
+} // namespace image
+} // namespace mozilla
+
+#endif // mozilla_image_Orientation_h