74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Note: ported from Chromium commit head: 4db7af61f923
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// Note: only necessary functions are ported from gfx::Size
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#ifndef SIZE_H_
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#define SIZE_H_
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#include <string>
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#include "base/numerics/safe_math.h"
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#include "base/strings/stringprintf.h"
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namespace media {
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// Helper struct for size to replace gfx::size usage from original code.
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// Only partial functions of gfx::size is implemented here.
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struct Size {
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public:
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constexpr Size() : width_(0), height_(0) {}
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constexpr Size(int width, int height)
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: width_(std::max(0, width)), height_(std::max(0, height)) {}
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Size& operator=(const Size& ps) {
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set_width(ps.width());
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set_height(ps.height());
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return *this;
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}
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constexpr int width() const { return width_; }
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constexpr int height() const { return height_; }
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void set_width(int width) { width_ = std::max(0, width); }
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void set_height(int height) { height_ = std::max(0, height); }
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// This call will CHECK if the area of this size would overflow int.
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int GetArea() const { return GetCheckedArea().ValueOrDie(); }
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// Returns a checked numeric representation of the area.
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base::CheckedNumeric<int> GetCheckedArea() const {
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base::CheckedNumeric<int> checked_area = width();
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checked_area *= height();
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return checked_area;
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}
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void SetSize(int width, int height) {
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set_width(width);
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set_height(height);
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}
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bool IsEmpty() const { return !width() || !height(); }
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std::string ToString() const {
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return base::StringPrintf("%dx%d", width(), height());
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}
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private:
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int width_;
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int height_;
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};
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inline bool operator==(const Size& lhs, const Size& rhs) {
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return lhs.width() == rhs.width() && lhs.height() == rhs.height();
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}
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inline bool operator!=(const Size& lhs, const Size& rhs) {
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return !(lhs == rhs);
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}
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} // namespace media
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#endif // SIZE_H_
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