/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_IMAGE_ORIENTATION_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_IMAGE_ORIENTATION_H_

#include <stdint.h>

#include "third_party/blink/renderer/platform/graphics/image_orientation_enum.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"

namespace gfx {
class SizeF;
}

namespace blink {

class AffineTransform;

enum RespectImageOrientationEnum : uint8_t {
  kDoNotRespectImageOrientation = 0,
  kRespectImageOrientation = 1
};

class PLATFORM_EXPORT ImageOrientation final {
  DISALLOW_NEW();

 public:
  ImageOrientation(
      ImageOrientationEnum orientation = ImageOrientationEnum::kDefault)
      : orientation_(orientation) {}

  bool UsesWidthAsHeight() const {
    // Values 5 through 8 all flip the width/height.
    return orientation_ >= ImageOrientationEnum::kOriginLeftTop;
  }

  // This transform can be used for drawing an image according to the
  // orientation. It should be used in a right-handed coordinate system.
  AffineTransform TransformFromDefault(const gfx::SizeF& drawn_size) const;

  // This transform can be used to reverse an image orientation, it's for
  // drawing an image according to the way it is encoded. It should be used in a
  // right-handed coordinate system.
  AffineTransform TransformToDefault(const gfx::SizeF& drawn_size) const;

  inline bool operator==(const ImageOrientation& other) const {
    return other.orientation_ == orientation_;
  }

  ImageOrientationEnum Orientation() const { return orientation_; }

 private:
  ImageOrientationEnum orientation_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_IMAGE_ORIENTATION_H_