Source/WebCore/platform/graphics/IntRectExtent.h

/*
 * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
 * Copyright (C) 2019 Apple 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

#pragma once

namespace WebCore {

class IntRectExtent {
public:
    IntRectExtent() = default;

    IntRectExtent(int top, int right, int bottom, int left)
        : m_top(top)
        , m_right(right)
        , m_bottom(bottom)
        , m_left(left)
    {
    }

    int top() const { return m_top; }
    void setTop(int top) { m_top = top; }

    int right() const { return m_right; }
    void setRight(int right) { m_right = right; }

    int bottom() const { return m_bottom; }
    void setBottom(int bottom) { m_bottom = bottom; }

    int left() const { return m_left; }
    void setLeft(int left) { m_left = left; }

    bool isZero() const { return !left() && !right() && !top() && !bottom(); }

private:
    int m_top { 0 };
    int m_right { 0 };
    int m_bottom { 0 };
    int m_left { 0 };
};

inline bool operator==(const IntRectExtent& a, const IntRectExtent& b)
{
    return a.top() == b.top() && a.right() == b.right() && a.bottom() == b.bottom() && a.left() == b.left();
}

inline bool operator!=(const IntRectExtent& a, const IntRectExtent& b)
{
    return !(a == b);
}

template<typename RectType>
inline RectType& operator+=(RectType& rect, const IntRectExtent& extent)
{
    rect.move(-extent.left(), -extent.top());
    rect.expand(extent.left() + extent.right(), extent.top() + extent.bottom());
    return rect;
}

inline IntRectExtent& operator+=(IntRectExtent& a, const IntRectExtent& b)
{
    a.setTop(a.top() + b.top());
    a.setRight(a.right() + b.right());
    a.setBottom(a.bottom() + b.bottom());
    a.setLeft(a.left() + b.left());
    return a;
}

using IntOutsets = IntRectExtent;

} // namespace WebCore