| // Copyright 2019 The Fuchsia 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 GARNET_TESTING_VIEWS_COLOR_H_ |
| #define GARNET_TESTING_VIEWS_COLOR_H_ |
| |
| #include <map> |
| #include <ostream> |
| #include <tuple> |
| |
| #include <fuchsia/ui/scenic/cpp/fidl.h> |
| |
| namespace scenic { |
| |
| struct Color { |
| // Constructor is idiomatic RGBA, but memory layout is native BGRA. |
| constexpr Color(uint8_t r, uint8_t g, uint8_t b, uint8_t a) |
| : b(b), g(g), r(r), a(a) {} |
| |
| uint8_t b; |
| uint8_t g; |
| uint8_t r; |
| uint8_t a; |
| }; |
| |
| inline bool operator==(const Color& a, const Color& b) { |
| return a.r == b.r && a.g == b.g && a.b == b.b && a.a == b.a; |
| } |
| |
| inline bool operator<(const Color& a, const Color& b) { |
| return std::tie(a.r, a.g, a.b, a.a) < std::tie(b.r, b.g, b.b, b.a); |
| } |
| |
| // RGBA hex dump. Note that this differs from the internal BGRA memory layout. |
| std::ostream& operator<<(std::ostream& os, const Color& c); |
| |
| // Counts the frequencies of each color in a screenshot. |
| std::map<Color, size_t> Histogram( |
| const fuchsia::ui::scenic::ScreenshotData& screenshot); |
| |
| } // namespace scenic |
| #endif // GARNET_TESTING_VIEWS_COLOR_H_ |