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//
// Copyright 2020 Google Inc.
//
// 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.
//
#ifndef GTXILIB_OOPCLASSES_CONTRAST_SWATCH_H_
#define GTXILIB_OOPCLASSES_CONTRAST_SWATCH_H_
#include "contrast_check.h"
#include "gtx_types.h"
namespace gtx {
// Encapsulates contrast and color data associated with a section of the given
// image data.
class ContrastSwatch {
public:
ContrastSwatch(const Color &foreground, const Color &background);
// Extracts prominent colors (foreground and background) from the given
// sub-image.
static ContrastSwatch Extract(const Image &image,
const Rect &sub_image_bounds);
// The background color in the image. Will be black if no background color
// could be identified.
const Color &background() { return background_; }
// The foreground color in the image. Will be black if no foreground color
// could be identified.
const Color &foreground() { return foreground_; }
private:
Color foreground_, background_;
};
} // namespace gtx
#endif // GTXILIB_OOPCLASSES_CONTRAST_SWATCH_H_