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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <math/HashCombine.h>
#include <ostream>
namespace android {
class FloatRect {
public:
FloatRect() = default;
constexpr FloatRect(float _left, float _top, float _right, float _bottom)
: left(_left), top(_top), right(_right), bottom(_bottom) {}
float getWidth() const { return right - left; }
float getHeight() const { return bottom - top; }
FloatRect intersect(const FloatRect& other) const {
FloatRect intersection = {
// Inline to avoid tromping on other min/max defines or adding a
// dependency on STL
(left > other.left) ? left : other.left,
(top > other.top) ? top : other.top,
(right < other.right) ? right : other.right,
(bottom < other.bottom) ? bottom : other.bottom
};
if (intersection.getWidth() < 0 || intersection.getHeight() < 0) {
return {0, 0, 0, 0};
}
return intersection;
}
float left = 0.0f;
float top = 0.0f;
float right = 0.0f;
float bottom = 0.0f;
constexpr bool isEmpty() const { return !(left < right && top < bottom); }
};
inline bool operator==(const FloatRect& a, const FloatRect& b) {
return a.left == b.left && a.top == b.top && a.right == b.right && a.bottom == b.bottom;
}
static inline void PrintTo(const FloatRect& rect, ::std::ostream* os) {
*os << "FloatRect(" << rect.left << ", " << rect.top << ", " << rect.right << ", "
<< rect.bottom << ")";
}
} // namespace android
namespace std {
template <>
struct hash<android::FloatRect> {
size_t operator()(const android::FloatRect& rect) const {
return android::hashCombine(rect.left, rect.top, rect.right, rect.bottom);
}
};
} // namespace std
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