tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT > Class Template Reference

#include <bbgrid.h>

Inheritance diagram for tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >:

Public Member Functions
	BBGrid ()
	BBGrid (int gridsize, const ICOORD &bleft, const ICOORD &tright)
	~BBGrid () override
void	Init (int gridsize, const ICOORD &bleft, const ICOORD &tright)
void	Clear ()
void	ClearGridData (void(*free_method)(BBC *))
void	InsertBBox (bool h_spread, bool v_spread, BBC *bbox)
void	InsertPixPtBBox (int left, int bottom, Image pix, BBC *bbox)
void	RemoveBBox (BBC *bbox)
bool	RectangleEmpty (const TBOX &rect)
IntGrid *	CountCellElements ()
ScrollView *	MakeWindow (int x, int y, const char *window_name)
void	DisplayBoxes (ScrollView *window)
void	AssertNoDuplicates ()
virtual void	HandleClick (int x, int y)
Public Member Functions inherited from tesseract::GridBase
	GridBase ()=default
	GridBase (int gridsize, const ICOORD &bleft, const ICOORD &tright)
virtual	~GridBase ()
void	Init (int gridsize, const ICOORD &bleft, const ICOORD &tright)
int	gridsize () const
int	gridwidth () const
int	gridheight () const
const ICOORD &	bleft () const
const ICOORD &	tright () const
void	GridCoords (int x, int y, int *grid_x, int *grid_y) const
void	ClipGridCoords (int *x, int *y) const

Protected Attributes
BBC_CLIST *	grid_
Protected Attributes inherited from tesseract::GridBase
int	gridsize_
int	gridwidth_
int	gridheight_
int	gridbuckets_
ICOORD	bleft_
ICOORD	tright_

Friends
class	GridSearch< BBC, BBC_CLIST, BBC_C_IT >

Detailed Description

template<class BBC, class BBC_CLIST, class BBC_C_IT>
class tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >

Definition at line 159 of file bbgrid.h.

Constructor & Destructor Documentation

BBGrid() [1/2]

template<class BBC , class BBC_CLIST , class BBC_C_IT >

tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::BBGrid

Definition at line 472 of file bbgrid.h.

: grid_(nullptr) {}

BBGrid() [2/2]

template<class BBC , class BBC_CLIST , class BBC_C_IT >

tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::BBGrid	(	int	gridsize,
		const ICOORD &	bleft,
		const ICOORD &	tright
	)

Definition at line 475 of file bbgrid.h.

    : grid_(nullptr) {
  Init(gridsize, bleft, tright);
}

~BBGrid()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::~BBGrid

override

Definition at line 481 of file bbgrid.h.

                                          {
  delete[] grid_;
}

Member Function Documentation

AssertNoDuplicates()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::AssertNoDuplicates

Definition at line 674 of file bbgrid.h.

                                                          {
  // Process all grid cells.
  for (int i = gridwidth_ * gridheight_ - 1; i >= 0; --i) {
    // Iterate over all elements excent the last.
    for (BBC_C_IT it(&grid_[i]); !it.at_last(); it.forward()) {
      BBC *ptr = it.data();
      BBC_C_IT it2(it);
      // None of the rest of the elements in the list should equal ptr.
      for (it2.forward(); !it2.at_first(); it2.forward()) {
        ASSERT_HOST(it2.data() != ptr);
      }
    }
  }
}

Clear()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::Clear

Definition at line 497 of file bbgrid.h.

                                             {
  for (int i = 0; i < gridbuckets_; ++i) {
    grid_[i].shallow_clear();
  }
}

ClearGridData()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::ClearGridData

(

void(*)(BBC *)

free_method

)

Definition at line 506 of file bbgrid.h.

                                                                               {
  if (grid_ == nullptr) {
    return;
  }
  GridSearch<BBC, BBC_CLIST, BBC_C_IT> search(this);
  search.StartFullSearch();
  BBC *bb;
  BBC_CLIST bb_list;
  BBC_C_IT it(&bb_list);
  while ((bb = search.NextFullSearch()) != nullptr) {
    it.add_after_then_move(bb);
  }
  for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
    free_method(it.data());
  }
}

CountCellElements()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

IntGrid * tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::CountCellElements

Definition at line 604 of file bbgrid.h.

                                                             {
  auto *intgrid = new IntGrid(gridsize(), bleft(), tright());
  for (int y = 0; y < gridheight(); ++y) {
    for (int x = 0; x < gridwidth(); ++x) {
      int cell_count = grid_[y * gridwidth() + x].length();
      intgrid->SetGridCell(x, y, cell_count);
    }
  }
  return intgrid;
}

DisplayBoxes()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::DisplayBoxes

(

ScrollView *

window

)

Definition at line 649 of file bbgrid.h.

                                                                       {
  tab_win->Pen(ScrollView::BLUE);
  tab_win->Brush(ScrollView::NONE);
 
  // For every bbox in the grid, display it.
  GridSearch<BBC, BBC_CLIST, BBC_C_IT> gsearch(this);
  gsearch.StartFullSearch();
  BBC *bbox;
  while ((bbox = gsearch.NextFullSearch()) != nullptr) {
    const TBOX &box = bbox->bounding_box();
    int left_x = box.left();
    int right_x = box.right();
    int top_y = box.top();
    int bottom_y = box.bottom();
    ScrollView::Color box_color = bbox->BoxColor();
    tab_win->Pen(box_color);
    tab_win->Rectangle(left_x, bottom_y, right_x, top_y);
  }
  tab_win->Update();
}

HandleClick()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::HandleClick ( int  x, int  y  )

virtual

Reimplemented in tesseract::ColPartitionGrid, and tesseract::StrokeWidth.

Definition at line 691 of file bbgrid.h.

                                                               {
  tprintf("Click at (%d, %d)\n", x, y);
}

Init()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::Init	(	int	gridsize,
		const ICOORD &	bleft,
		const ICOORD &	tright
	)

Definition at line 488 of file bbgrid.h.

                                                                  {
  GridBase::Init(gridsize, bleft, tright);
  delete[] grid_;
  grid_ = new BBC_CLIST[gridbuckets_];
}

InsertBBox()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::InsertBBox	(	bool	h_spread,
		bool	v_spread,
		BBC *	bbox
	)

Definition at line 529 of file bbgrid.h.

                                                                                         {
  TBOX box = bbox->bounding_box();
  int start_x, start_y, end_x, end_y;
  GridCoords(box.left(), box.bottom(), &start_x, &start_y);
  GridCoords(box.right(), box.top(), &end_x, &end_y);
  if (!h_spread) {
    end_x = start_x;
  }
  if (!v_spread) {
    end_y = start_y;
  }
  int grid_index = start_y * gridwidth_;
  for (int y = start_y; y <= end_y; ++y, grid_index += gridwidth_) {
    for (int x = start_x; x <= end_x; ++x) {
      grid_[grid_index + x].add_sorted(SortByBoxLeft<BBC>, true, bbox);
    }
  }
}

InsertPixPtBBox()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::InsertPixPtBBox	(	int	left,
		int	bottom,
		Image	pix,
		BBC *	bbox
	)

Definition at line 558 of file bbgrid.h.

                                                                                                 {
  int width = pixGetWidth(pix);
  int height = pixGetHeight(pix);
  for (int y = 0; y < height; ++y) {
    l_uint32 *data = pixGetData(pix) + y * pixGetWpl(pix);
    for (int x = 0; x < width; ++x) {
      if (GET_DATA_BIT(data, x)) {
        grid_[(bottom + y) * gridwidth_ + x + left].add_sorted(SortByBoxLeft<BBC>, true, bbox);
      }
    }
  }
}

MakeWindow()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

ScrollView * tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::MakeWindow	(	int	x,
		int	y,
		const char *	window_name
	)

Definition at line 633 of file bbgrid.h.

                                                                                              {
  auto tab_win =
      new ScrollView(window_name, x, y, tright_.x() - bleft_.x(), tright_.y() - bleft_.y(),
                     tright_.x() - bleft_.x(), tright_.y() - bleft_.y(), true);
  auto *handler = new TabEventHandler<BBGrid<BBC, BBC_CLIST, BBC_C_IT>>(this);
  tab_win->AddEventHandler(handler);
  tab_win->Pen(ScrollView::GREY);
  tab_win->Rectangle(0, 0, tright_.x() - bleft_.x(), tright_.y() - bleft_.y());
  return tab_win;
}

RectangleEmpty()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

bool tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::RectangleEmpty

(

const TBOX &

rect

)

Definition at line 595 of file bbgrid.h.

                                                                      {
  GridSearch<BBC, BBC_CLIST, BBC_C_IT> rsearch(this);
  rsearch.StartRectSearch(rect);
  return rsearch.NextRectSearch() == nullptr;
}

RemoveBBox()

template<class BBC , class BBC_CLIST , class BBC_C_IT >

void tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::RemoveBBox

(

BBC *

bbox

)

Definition at line 575 of file bbgrid.h.

                                                           {
  TBOX box = bbox->bounding_box();
  int start_x, start_y, end_x, end_y;
  GridCoords(box.left(), box.bottom(), &start_x, &start_y);
  GridCoords(box.right(), box.top(), &end_x, &end_y);
  int grid_index = start_y * gridwidth_;
  for (int y = start_y; y <= end_y; ++y, grid_index += gridwidth_) {
    for (int x = start_x; x <= end_x; ++x) {
      BBC_C_IT it(&grid_[grid_index + x]);
      for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
        if (it.data() == bbox) {
          it.extract();
        }
      }
    }
  }
}

Friends And Related Function Documentation

GridSearch< BBC, BBC_CLIST, BBC_C_IT >

template<class BBC , class BBC_CLIST , class BBC_C_IT >

friend class GridSearch< BBC, BBC_CLIST, BBC_C_IT >

friend

Definition at line 141 of file bbgrid.h.

Member Data Documentation

grid_

template<class BBC , class BBC_CLIST , class BBC_C_IT >

BBC_CLIST* tesseract::BBGrid< BBC, BBC_CLIST, BBC_C_IT >::grid_

protected

Definition at line 226 of file bbgrid.h.

---

The documentation for this class was generated from the following file:

• /media/home/debian/src/github/tesseract-ocr/tesseract/src/textord/bbgrid.h