mojo/public/cpp/bindings/tests/rect_blink.h

// Copyright 2015 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 MOJO_PUBLIC_CPP_BINDINGS_TESTS_RECT_BLINK_H_
#define MOJO_PUBLIC_CPP_BINDINGS_TESTS_RECT_BLINK_H_

#include "base/logging.h"

namespace mojo {
namespace test {

// An implementation of a hypothetical Rect type specifically for consumers in
// in Blink. Unlike the Chromium variant (see rect_chromium.h) this does not
// support negative origin coordinates and is not copyable.
class RectBlink {
 public:
  RectBlink() {}
  RectBlink(int x, int y, int width, int height) :
      x_(x), y_(y), width_(width), height_(height) {
    DCHECK_GE(x_, 0);
    DCHECK_GE(y_, 0);
    DCHECK_GE(width_, 0);
    DCHECK_GE(height_, 0);
  }
  ~RectBlink() {}

  int x() const { return x_; }
  void setX(int x) {
    DCHECK_GE(x, 0);
    x_ = x;
  }

  int y() const { return y_; }
  void setY(int y) {
    DCHECK_GE(y, 0);
    y_ = y;
  }

  int width() const { return width_; }
  void setWidth(int width) {
    DCHECK_GE(width, 0);
    width_ = width;
  }

  int height() const { return height_; }
  void setHeight(int height) {
    DCHECK_GE(height, 0);
    height_ = height;
  }

  int computeArea() const { return width_ * height_; }

  bool operator==(const RectBlink& other) const {
    return (x() == other.x() && y() == other.y() && width() == other.width() &&
            height() == other.height());
  }
  bool operator!=(const RectBlink& other) const { return !(*this == other); }

 private:
  int x_ = 0;
  int y_ = 0;
  int width_ = 0;
  int height_ = 0;
};

}  // namespace test
}  // namespace mojo

namespace std {

template <>
struct hash<mojo::test::RectBlink> {
  size_t operator()(const mojo::test::RectBlink& value) {
    // Terrible hash function:
    return (std::hash<int>()(value.x()) ^ std::hash<int>()(value.y()) ^
            std::hash<int>()(value.width()) ^ std::hash<int>()(value.height()));
  }
};

}  // namespace std

#endif  // MOJO_PUBLIC_CPP_BINDINGS_TESTS_RECT_BLINK_H_