xfa/src/fxbarcode/common/BC_WhiteRectangleDetector.h

// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef _BC_WHITERECTANLEDETECTOR_H_
#define _BC_WHITERECTANLEDETECTOR_H_
class CBC_CommonBitMatrix;
class CBC_ResultPoint;
class CBC_WhiteRectangleDetector
{
public:
    CBC_WhiteRectangleDetector(CBC_CommonBitMatrix *image);
    CBC_WhiteRectangleDetector(CBC_CommonBitMatrix *image, int32_t initSize, int32_t x, int32_t y);
    virtual ~CBC_WhiteRectangleDetector();
    CFX_PtrArray *Detect(int32_t &e);
    virtual void Init(int32_t &e);
private:
    int32_t Round(float d);
    CBC_ResultPoint *GetBlackPointOnSegment(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY);
    int32_t DistanceL2(FX_FLOAT aX, FX_FLOAT aY, FX_FLOAT bX, FX_FLOAT bY);
    CFX_PtrArray *CenterEdges(CBC_ResultPoint *y, CBC_ResultPoint *z,
                              CBC_ResultPoint *x, CBC_ResultPoint *t);
    FX_BOOL ContainsBlackPoint(int32_t a, int32_t b, int32_t fixed, FX_BOOL horizontal);
    const static int32_t INIT_SIZE;
    const static int32_t CORR;

    CBC_CommonBitMatrix *m_image;
    int32_t m_height;
    int32_t m_width;
    int32_t m_leftInit;
    int32_t m_rightInit;
    int32_t m_downInit;
    int32_t m_upInit;
};
#endif