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ROW Class Reference

#include <ocrrow.h>

Inheritance diagram for ROW:
ELIST_LINK

List of all members.

Public Member Functions

 ROW ()
 ROW (inT32 spline_size, inT32 *xstarts, double *coeffs, float x_height, float ascenders, float descenders, inT16 kern, inT16 space)
 ROW (TO_ROW *row, inT16 kern, inT16 space)
WERD_LIST * word_list ()
float base_line (float xpos) const
float x_height () const
void set_x_height (float new_xheight)
inT32 kern () const
float body_size () const
void set_body_size (float new_size)
inT32 space () const
float ascenders () const
float descenders () const
TBOX bounding_box () const
void set_lmargin (inT16 lmargin)
void set_rmargin (inT16 rmargin)
inT16 lmargin () const
inT16 rmargin () const
void set_has_drop_cap (bool has)
bool has_drop_cap () const
void set_para (PARA *p)
PARApara () const
void recalc_bounding_box ()
void move (const ICOORD vec)
void print (FILE *fp)
void plot (ScrollView *window, ScrollView::Color colour)
void plot (ScrollView *window)
void plot_baseline (ScrollView *window, ScrollView::Color colour)
ROWoperator= (const ROW &source)
- Public Member Functions inherited from ELIST_LINK
 ELIST_LINK ()
 ELIST_LINK (const ELIST_LINK &)
void operator= (const ELIST_LINK &)

Friends

void tweak_row_baseline (ROW *, double, double)

Detailed Description

Definition at line 32 of file ocrrow.h.


Constructor & Destructor Documentation

ROW::ROW ( )
inline

Definition at line 36 of file ocrrow.h.

{
} //empty constructor
ROW::ROW ( inT32  spline_size,
inT32 xstarts,
double *  coeffs,
float  x_height,
float  ascenders,
float  descenders,
inT16  kern,
inT16  space 
)

Definition at line 36 of file ocrrow.cpp.

: baseline(spline_size, xstarts, coeffs),
para_(NULL) {
kerning = kern; //just store stuff
spacing = space;
xheight = x_height;
ascrise = ascenders;
bodysize = 0.0f;
descdrop = descenders;
has_drop_cap_ = false;
lmargin_ = 0;
rmargin_ = 0;
}
ROW::ROW ( TO_ROW row,
inT16  kern,
inT16  space 
)

Definition at line 67 of file ocrrow.cpp.

: para_(NULL) {
kerning = kern; //just store stuff
spacing = space;
xheight = to_row->xheight;
bodysize = to_row->body_size;
ascrise = to_row->ascrise;
descdrop = to_row->descdrop;
baseline = to_row->baseline;
has_drop_cap_ = false;
lmargin_ = 0;
rmargin_ = 0;
}

Member Function Documentation

float ROW::ascenders ( ) const
inline

Definition at line 79 of file ocrrow.h.

{ //return size
return ascrise;
}
float ROW::base_line ( float  xpos) const
inline

Definition at line 56 of file ocrrow.h.

{ //at the position
//get spline value
return (float) baseline.y (xpos);
}
float ROW::body_size ( ) const
inline

Definition at line 70 of file ocrrow.h.

{ //return body size
return bodysize;
}
TBOX ROW::bounding_box ( ) const
inline

Definition at line 85 of file ocrrow.h.

{ //return bounding box
return bound_box;
}
float ROW::descenders ( ) const
inline

Definition at line 82 of file ocrrow.h.

{ //return size
return descdrop;
}
bool ROW::has_drop_cap ( ) const
inline

Definition at line 105 of file ocrrow.h.

{
return has_drop_cap_;
}
inT32 ROW::kern ( ) const
inline

Definition at line 67 of file ocrrow.h.

{ //return kerning
return kerning;
}
inT16 ROW::lmargin ( ) const
inline

Definition at line 95 of file ocrrow.h.

{
return lmargin_;
}
void ROW::move ( const ICOORD  vec)

Definition at line 138 of file ocrrow.cpp.

{
WERD_IT it(&words); // word iterator
for (it.mark_cycle_pt (); !it.cycled_list (); it.forward ())
it.data ()->move (vec);
bound_box.move (vec);
baseline.move (vec);
}
ROW & ROW::operator= ( const ROW source)

Definition at line 216 of file ocrrow.cpp.

{
this->ELIST_LINK::operator= (source);
kerning = source.kerning;
spacing = source.spacing;
xheight = source.xheight;
bodysize = source.bodysize;
ascrise = source.ascrise;
descdrop = source.descdrop;
if (!words.empty ())
words.clear ();
baseline = source.baseline; //QSPLINES must do =
bound_box = source.bound_box;
has_drop_cap_ = source.has_drop_cap_;
lmargin_ = source.lmargin_;
rmargin_ = source.rmargin_;
para_ = source.para_;
return *this;
}
PARA* ROW::para ( ) const
inline

Definition at line 112 of file ocrrow.h.

{
return para_;
}
void ROW::plot ( ScrollView window,
ScrollView::Color  colour 
)

Definition at line 178 of file ocrrow.cpp.

{
WERD *word; //current word
WERD_IT it = &words; //words of ROW
for (it.mark_cycle_pt (); !it.cycled_list (); it.forward ()) {
word = it.data ();
word->plot (window, colour); //all in one colour
}
}
void ROW::plot ( ScrollView window)

Definition at line 197 of file ocrrow.cpp.

{
WERD *word; //current word
WERD_IT it = &words; //words of ROW
for (it.mark_cycle_pt (); !it.cycled_list (); it.forward ()) {
word = it.data ();
word->plot (window); //in rainbow colours
}
}
void ROW::plot_baseline ( ScrollView window,
ScrollView::Color  colour 
)
inline

Definition at line 131 of file ocrrow.h.

{ //colour to draw
//draw it
baseline.plot (window, colour);
}
void ROW::print ( FILE *  fp)

Definition at line 157 of file ocrrow.cpp.

{
tprintf("Kerning= %d\n", kerning);
tprintf("Spacing= %d\n", spacing);
bound_box.print();
tprintf("Xheight= %f\n", xheight);
tprintf("Ascrise= %f\n", ascrise);
tprintf("Descdrop= %f\n", descdrop);
tprintf("has_drop_cap= %d\n", has_drop_cap_);
tprintf("lmargin= %d, rmargin= %d\n", lmargin_, rmargin_);
}
void ROW::recalc_bounding_box ( )

Definition at line 91 of file ocrrow.cpp.

{ //recalculate BB
WERD *word; //current word
WERD_IT it = &words; //words of ROW
inT16 left; //of word
inT16 prev_left; //old left
if (!it.empty ()) {
word = it.data ();
prev_left = word->bounding_box ().left ();
it.forward ();
while (!it.at_first ()) {
word = it.data ();
left = word->bounding_box ().left ();
if (left < prev_left) {
it.move_to_first ();
//words in BB order
it.sort (word_comparator);
break;
}
prev_left = left;
it.forward ();
}
}
for (it.mark_cycle_pt (); !it.cycled_list (); it.forward ()) {
word = it.data ();
if (it.at_first ())
word->set_flag (W_BOL, TRUE);
else
//not start of line
word->set_flag (W_BOL, FALSE);
if (it.at_last ())
word->set_flag (W_EOL, TRUE);
else
//not end of line
word->set_flag (W_EOL, FALSE);
//extend BB as reqd
bound_box += word->bounding_box ();
}
}
inT16 ROW::rmargin ( ) const
inline

Definition at line 98 of file ocrrow.h.

{
return rmargin_;
}
void ROW::set_body_size ( float  new_size)
inline

Definition at line 73 of file ocrrow.h.

{ // set body size
bodysize = new_size;
}
void ROW::set_has_drop_cap ( bool  has)
inline

Definition at line 102 of file ocrrow.h.

{
has_drop_cap_ = has;
}
void ROW::set_lmargin ( inT16  lmargin)
inline

Definition at line 89 of file ocrrow.h.

{
lmargin_ = lmargin;
}
void ROW::set_para ( PARA p)
inline

Definition at line 109 of file ocrrow.h.

{
para_ = p;
}
void ROW::set_rmargin ( inT16  rmargin)
inline

Definition at line 92 of file ocrrow.h.

{
rmargin_ = rmargin;
}
void ROW::set_x_height ( float  new_xheight)
inline

Definition at line 64 of file ocrrow.h.

{ // set x height
xheight = new_xheight;
}
inT32 ROW::space ( ) const
inline

Definition at line 76 of file ocrrow.h.

{ //return spacing
return spacing;
}
WERD_LIST* ROW::word_list ( )
inline

Definition at line 52 of file ocrrow.h.

{ //get words
return &words;
}
float ROW::x_height ( ) const
inline

Definition at line 61 of file ocrrow.h.

{ //return x height
return xheight;
}

Friends And Related Function Documentation

void tweak_row_baseline ( ROW ,
double  ,
double   
)
friend

Definition at line 680 of file tordmain.cpp.

{
TBOX blob_box; //bounding box
C_BLOB *blob; //current blob
WERD *word; //current word
inT32 blob_count; //no of blobs
inT32 src_index; //source segment
inT32 dest_index; //destination segment
inT32 *xstarts; //spline segments
double *coeffs; //spline coeffs
float ydiff; //baseline error
float x_centre; //centre of blob
//words of row
WERD_IT word_it = row->word_list ();
C_BLOB_IT blob_it; //blob iterator
blob_count = 0;
for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
word = word_it.data (); //current word
//get total blobs
blob_count += word->cblob_list ()->length ();
}
if (blob_count == 0)
return;
xstarts =
(inT32 *) alloc_mem ((blob_count + row->baseline.segments + 1) *
sizeof (inT32));
coeffs =
(double *) alloc_mem ((blob_count + row->baseline.segments) * 3 *
sizeof (double));
src_index = 0;
dest_index = 0;
xstarts[0] = row->baseline.xcoords[0];
for (word_it.mark_cycle_pt (); !word_it.cycled_list (); word_it.forward ()) {
word = word_it.data (); //current word
//blobs in word
blob_it.set_to_list (word->cblob_list ());
for (blob_it.mark_cycle_pt (); !blob_it.cycled_list ();
blob_it.forward ()) {
blob = blob_it.data ();
blob_box = blob->bounding_box ();
x_centre = (blob_box.left () + blob_box.right ()) / 2.0;
ydiff = blob_box.bottom () - row->base_line (x_centre);
if (ydiff < 0)
ydiff = -ydiff / row->x_height ();
else
ydiff = ydiff / row->x_height ();
if (ydiff < blshift_maxshift
&& blob_box.height () / row->x_height () > blshift_xfraction) {
if (xstarts[dest_index] >= x_centre)
xstarts[dest_index] = blob_box.left ();
coeffs[dest_index * 3] = 0;
coeffs[dest_index * 3 + 1] = 0;
coeffs[dest_index * 3 + 2] = blob_box.bottom ();
//shift it
dest_index++;
xstarts[dest_index] = blob_box.right () + 1;
}
else {
if (xstarts[dest_index] <= x_centre) {
while (row->baseline.xcoords[src_index + 1] <= x_centre
&& src_index < row->baseline.segments - 1) {
if (row->baseline.xcoords[src_index + 1] >
xstarts[dest_index]) {
coeffs[dest_index * 3] =
row->baseline.quadratics[src_index].a;
coeffs[dest_index * 3 + 1] =
row->baseline.quadratics[src_index].b;
coeffs[dest_index * 3 + 2] =
row->baseline.quadratics[src_index].c;
dest_index++;
xstarts[dest_index] =
row->baseline.xcoords[src_index + 1];
}
src_index++;
}
coeffs[dest_index * 3] =
row->baseline.quadratics[src_index].a;
coeffs[dest_index * 3 + 1] =
row->baseline.quadratics[src_index].b;
coeffs[dest_index * 3 + 2] =
row->baseline.quadratics[src_index].c;
dest_index++;
xstarts[dest_index] = row->baseline.xcoords[src_index + 1];
}
}
}
}
while (src_index < row->baseline.segments
&& row->baseline.xcoords[src_index + 1] <= xstarts[dest_index])
src_index++;
while (src_index < row->baseline.segments) {
coeffs[dest_index * 3] = row->baseline.quadratics[src_index].a;
coeffs[dest_index * 3 + 1] = row->baseline.quadratics[src_index].b;
coeffs[dest_index * 3 + 2] = row->baseline.quadratics[src_index].c;
dest_index++;
src_index++;
xstarts[dest_index] = row->baseline.xcoords[src_index];
}
//turn to spline
row->baseline = QSPLINE (dest_index, xstarts, coeffs);
free_mem(xstarts);
free_mem(coeffs);
}

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