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// Copyright 2014 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 FloatRectOutsets_h
#define FloatRectOutsets_h
#include "platform/PlatformExport.h"
#include <algorithm>
namespace blink {
// Specifies floating-point lengths to be used to expand a rectangle.
// For example, |top()| returns the distance the top edge should be moved
// upward.
//
// Negative lengths can be used to express insets.
class PLATFORM_EXPORT FloatRectOutsets {
public:
FloatRectOutsets() : m_top(0), m_right(0), m_bottom(0), m_left(0) { }
FloatRectOutsets(float top, float right, float bottom, float left)
: m_top(top)
, m_right(right)
, m_bottom(bottom)
, m_left(left)
{
}
float top() const { return m_top; }
float right() const { return m_right; }
float bottom() const { return m_bottom; }
float left() const { return m_left; }
void setTop(float top) { m_top = top; }
void setRight(float right) { m_right = right; }
void setBottom(float bottom) { m_bottom = bottom; }
void setLeft(float left) { m_left = left; }
// Change outsets to be at least as large as |other|.
void unite(const FloatRectOutsets& other)
{
m_top = std::max(m_top, other.m_top);
m_right = std::max(m_right, other.m_right);
m_bottom = std::max(m_bottom, other.m_bottom);
m_left = std::max(m_left, other.m_left);
}
private:
float m_top;
float m_right;
float m_bottom;
float m_left;
};
} // namespace blink
#endif // FloatRectOutsets_h
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