// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-

#ifndef __MONOCHROMERECTANGLEDETECTOR_H__
#define __MONOCHROMERECTANGLEDETECTOR_H__

/*
 *  MonochromeRectangleDetector.h
 *  y_wmk
 *
 *  Created by Luiz Silva on 09/02/2010.
 *  Copyright 2010 y_wmk authors All rights reserved.
 *
 * 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.
 */

#include <vector>
#include <zxing/NotFoundException.h>
#include <zxing/ResultPoint.h>
#include <zxing/common/BitMatrix.h>
#include <zxing/common/Counted.h>
#include <zxing/ResultPoint.h>

namespace zxing {

struct TwoInts: public Counted {
  int start;
  int end;
};

class MonochromeRectangleDetector : public Counted {
 private:
  static const int MAX_MODULES = 32;
  Ref<BitMatrix> image_;

 public:
  MonochromeRectangleDetector(Ref<BitMatrix> image) : image_(image) {  };

  std::vector<Ref<ResultPoint> > detect();

 private:
  Ref<ResultPoint> findCornerFromCenter(int centerX, int deltaX, int left, int right,
                                        int centerY, int deltaY, int top, int bottom, int maxWhiteRun);

  Ref<TwoInts> blackWhiteRange(int fixedDimension, int maxWhiteRun, int minDim, int maxDim,
                               bool horizontal);

  int max(int a, float b) { return (float) a > b ? a : (int) b;};
};

}

#endif // __MONOCHROMERECTANGLEDETECTOR_H__