1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/image/src/Orientation.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,62 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef MOZILLA_IMAGELIB_ORIENTATION_H_
1.10 +#define MOZILLA_IMAGELIB_ORIENTATION_H_
1.11 +
1.12 +#include <stdint.h>
1.13 +#include "mozilla/TypedEnum.h"
1.14 +
1.15 +namespace mozilla {
1.16 +namespace image {
1.17 +
1.18 +MOZ_BEGIN_ENUM_CLASS(Angle, uint8_t)
1.19 + D0,
1.20 + D90,
1.21 + D180,
1.22 + D270
1.23 +MOZ_END_ENUM_CLASS(Angle)
1.24 +
1.25 +MOZ_BEGIN_ENUM_CLASS(Flip, uint8_t)
1.26 + Unflipped,
1.27 + Horizontal
1.28 +MOZ_END_ENUM_CLASS(Flip)
1.29 +
1.30 +/**
1.31 + * A struct that describes an image's orientation as a rotation optionally
1.32 + * followed by a reflection. This may be used to be indicate an image's inherent
1.33 + * orientation or a desired orientation for the image.
1.34 + */
1.35 +struct Orientation
1.36 +{
1.37 + Orientation(Angle aRotation = Angle::D0, Flip mFlip = Flip::Unflipped)
1.38 + : rotation(aRotation)
1.39 + , flip(mFlip)
1.40 + { }
1.41 +
1.42 + bool IsIdentity() const {
1.43 + return (rotation == Angle::D0) && (flip == Flip::Unflipped);
1.44 + }
1.45 +
1.46 + bool SwapsWidthAndHeight() const {
1.47 + return (rotation == Angle::D90) || (rotation == Angle::D270);
1.48 + }
1.49 +
1.50 + bool operator==(const Orientation& aOther) const {
1.51 + return (rotation == aOther.rotation) && (flip == aOther.flip);
1.52 + }
1.53 +
1.54 + bool operator!=(const Orientation& aOther) const {
1.55 + return !(*this == aOther);
1.56 + }
1.57 +
1.58 + Angle rotation;
1.59 + Flip flip;
1.60 +};
1.61 +
1.62 +}
1.63 +}
1.64 +
1.65 +#endif
