react-native/ReactCommon/fabric/graphics/Geometry.h

148 lines
3.1 KiB
C++

// Copyright (c) 2004-present, Facebook, Inc.
// This source code is licensed under the MIT license found in the
// LICENSE file in the root directory of this source tree.
#pragma once
#include <algorithm>
#include <tuple>
#include <fabric/graphics/Float.h>
namespace facebook {
namespace react {
/*
* Point
*/
struct Point {
Float x {0};
Float y {0};
Point& operator += (const Point& rhs) {
x += rhs.x;
y += rhs.y;
return *this;
}
friend Point operator + (Point lhs, const Point& rhs) {
return lhs += rhs;
}
bool operator ==(const Point& rhs) const {
return
std::tie(this->x, this->y) ==
std::tie(rhs.x, rhs.y);
}
bool operator !=(const Point& rhs) const {
return !(*this == rhs);
}
};
/*
* Size
*/
struct Size {
Float width {0};
Float height {0};
bool operator ==(const Size& rhs) const {
return
std::tie(this->width, this->height) ==
std::tie(rhs.width, rhs.height);
}
bool operator !=(const Size& rhs) const {
return !(*this == rhs);
}
};
/*
* Rect: Point and Size
*/
struct Rect {
Point origin {0, 0};
Size size {0, 0};
bool operator ==(const Rect& rhs) const {
return
std::tie(this->origin, this->size) ==
std::tie(rhs.origin, rhs.size);
}
bool operator !=(const Rect& rhs) const {
return !(*this == rhs);
}
Float getMaxX() const { return size.width > 0 ? origin.x + size.width : origin.x; }
Float getMaxY() const { return size.height > 0 ? origin.y + size.height : origin.y; }
Float getMinX() const { return size.width >= 0 ? origin.x : origin.x + size.width; }
Float getMinY() const { return size.height >= 0 ? origin.y : origin.y + size.height; }
void unionInPlace(const Rect &rect) {
Float x1 = std::min(getMinX(), rect.getMinX());
Float y1 = std::min(getMinY(), rect.getMinY());
Float x2 = std::max(getMaxX(), rect.getMaxX());
Float y2 = std::max(getMaxY(), rect.getMaxY());
origin = {x1, y1};
size = {x2 - x1, y2 - y1};
}
};
/*
* EdgeInsets
*/
struct EdgeInsets {
Float left {0};
Float top {0};
Float right {0};
Float bottom {0};
bool operator ==(const EdgeInsets& rhs) const {
return
std::tie(this->left, this->top, this->right, this->bottom) ==
std::tie(rhs.left, rhs.top, rhs.right, rhs.bottom);
}
bool operator !=(const EdgeInsets& rhs) const {
return !(*this == rhs);
}
bool isUniform() const {
return left == top &&
left == right &&
left == bottom;
}
};
/*
* CornerInsets
*/
struct CornerInsets {
Float topLeft {0};
Float topRight {0};
Float bottomLeft {0};
Float bottomRight {0};
bool operator ==(const CornerInsets& rhs) const {
return
std::tie(this->topLeft, this->topRight, this->bottomLeft, this->bottomRight) ==
std::tie(rhs.topLeft, rhs.topRight, rhs.bottomLeft, rhs.bottomRight);
}
bool operator !=(const CornerInsets& rhs) const {
return !(*this == rhs);
}
bool isUniform() const {
return topLeft == topRight &&
topLeft == bottomLeft &&
topLeft == bottomRight;
}
};
} // namespace react
} // namespace facebook