C++ (Cpp) gt_layout_get_range示例

示例#1

文件： line_breaker_captions.c 项目： AlexWoroschilow/uni_hamburg

int calculate_drawing_range(GtLineBreakerCaptions *lbc, GtDrawingRange *rng,
                            GtBlock* block, GtError *err)
{
  double textwidth = 0.0;
  GtDrawingRange drange;
  gt_assert(block && lbc);
  drange = gt_coords_calc_generic_range(gt_block_get_range(block),
                                        gt_layout_get_range(lbc->layout));
  drange.start *= lbc->width-2*lbc->margins;
  drange.end *= lbc->width-2*lbc->margins;
  if (gt_block_get_caption(block))
  {
    textwidth = gt_text_width_calculator_get_text_width(
                                      gt_layout_get_twc(lbc->layout),
                                      gt_str_get(gt_block_get_caption(block)),
                                      err);
    if (gt_double_smaller_double(textwidth, 0))
      return -1;
    if (gt_double_smaller_double(gt_drawing_range_length(drange), textwidth))
      drange.end = drange.start + textwidth;
  }
  rng->start = drange.start;
  rng->end = drange.end;
  return 0;
}

示例#2

文件： canvas_cairo.c 项目： oeigenbrod/genometools

int gt_canvas_cairo_visit_layout_pre(GtCanvas *canvas,
                                     GtLayout *layout,
                                     GtError *err)
{
  double head_track_space = HEAD_TRACK_SPACE_DEFAULT;
  /* get displayed range for internal use */
  canvas->pvt->viewrange = gt_layout_get_range(layout);
  if (gt_canvas_draw_ruler(canvas, canvas->pvt->viewrange, err)) {
    return -1;
  }
  if (gt_style_get_num(canvas->pvt->sty, "format", "ruler_space",
                       &head_track_space, NULL,err) == GT_STYLE_QUERY_ERROR) {
    return -1;
  }
  canvas->pvt->y += HEADER_SPACE + head_track_space;
  return 0;
}