// Returns a pix of the original sample image. The pix is padded all round
// by padding wherever possible.
// The returned Pix must be pixDestroyed after use.
// If the input page_pix is nullptr, nullptr is returned.
Pix* TrainingSample::GetSamplePix(int padding, Pix* page_pix) const {
if (page_pix == nullptr)
return nullptr;
int page_width = pixGetWidth(page_pix);
int page_height = pixGetHeight(page_pix);
TBOX padded_box = bounding_box();
padded_box.pad(padding, padding);
// Clip the padded_box to the limits of the page
TBOX page_box(0, 0, page_width, page_height);
padded_box &= page_box;
Box* box = boxCreate(page_box.left(), page_height - page_box.top(),
page_box.width(), page_box.height());
Pix* sample_pix = pixClipRectangle(page_pix, box, nullptr);
boxDestroy(&box);
return sample_pix;
}
box
pager_rep::pages_make_page (pagelet pg) {
box sb= pages_format (pg);
box lb= move_box (ip, sb, 0, 0);
int nr= N(pages) + 1 + page_offset;
SI left= (nr&1)==0? even: odd;
env->write (PAGE_NR, as_string (nr));
env->write (PAGE_THE_PAGE, style[PAGE_THE_PAGE]);
tree page_t= env->exec (compound (PAGE_THE_PAGE));
bool empty= N (pg->ins) == 0;
box header= make_header (empty);
box footer= make_footer (empty);
brush bgc = make_background (empty);
adjust_margins (empty);
return page_box (ip, lb, page_t, nr, bgc, width, height,
left, top + dtop, top + dtop + text_height,
header, footer, head_sep, foot_sep);
}
box
page_box (path ip, box b, tree page,
SI width, SI height, SI left, SI top, SI bot,
box header, box footer, SI head_sep, SI foot_sep)
{
SI h_y= -top- header->y1+ head_sep;
SI f_y= -bot- footer->y2- foot_sep;
array<box> bs (1); bs [0]= b;
array<SI> bs_x (1); bs_x [0]= left;
array<SI> bs_y (1); bs_y [0]= -top;
array<box> decs (2); decs [0]= header; decs [1]= footer;
array<SI> decs_x (2); decs_x [0]= left ; decs_x [1]= left;
array<SI> decs_y (2); decs_y [0]= h_y ; decs_y [1]= f_y;
return page_box (ip, page, width, height,
bs, bs_x, bs_y,
decs, decs_x, decs_y);
}
