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03946537c2
In a46f817 these files were moved from shell/platform/common/cpp to shell/platform/common.
84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
// Copyright 2013 The Flutter 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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#ifndef FLUTTER_SHELL_PLATFORM_COMMON_GEOMETRY_H_
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#define FLUTTER_SHELL_PLATFORM_COMMON_GEOMETRY_H_
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#include <cmath>
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namespace flutter {
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// A point in Cartesian space relative to a separately-maintained origin.
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class Point {
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public:
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Point() = default;
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Point(double x, double y) : x_(x), y_(y) {}
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Point(const Point& point) = default;
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Point& operator=(const Point& other) = default;
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double x() const { return x_; }
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double y() const { return y_; }
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bool operator==(const Point& other) const {
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return x_ == other.x_ && y_ == other.y_;
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}
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private:
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double x_ = 0.0;
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double y_ = 0.0;
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};
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// A 2D floating-point size with non-negative dimensions.
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class Size {
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public:
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Size() = default;
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Size(double width, double height)
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: width_(std::fmax(0.0, width)), height_(std::fmax(0.0, height)) {}
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Size(const Size& size) = default;
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Size& operator=(const Size& other) = default;
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double width() const { return width_; }
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double height() const { return height_; }
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bool operator==(const Size& other) const {
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return width_ == other.width_ && height_ == other.height_;
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}
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private:
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double width_ = 0.0;
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double height_ = 0.0;
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};
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// A rectangle with position in Cartesian space specified relative to a
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// separately-maintained origin.
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class Rect {
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public:
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Rect() = default;
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Rect(const Point& origin, const Size& size) : origin_(origin), size_(size) {}
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Rect(const Rect& rect) = default;
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Rect& operator=(const Rect& other) = default;
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double left() const { return origin_.x(); }
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double top() const { return origin_.y(); }
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double right() const { return origin_.x() + size_.width(); }
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double bottom() const { return origin_.y() + size_.height(); }
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double width() const { return size_.width(); }
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double height() const { return size_.height(); }
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Point origin() const { return origin_; }
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Size size() const { return size_; }
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bool operator==(const Rect& other) const {
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return origin_ == other.origin_ && size_ == other.size_;
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}
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private:
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Point origin_;
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Size size_;
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};
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} // namespace flutter
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#endif // FLUTTER_SHELL_PLATFORM_COMMON_GEOMETRY_H_
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