Method icon_for_layer

src/laybasic/laybasic/layLayoutViewBase.cc:1722–1888

}

tl::PixelBuffer
LayoutViewBase::icon_for_layer (const LayerPropertiesConstIterator &iter, unsigned int w, unsigned int h, double dpr, unsigned int di_off, bool no_state)
{
  if (dpr < 0.0) {
    dpr = canvas () ? canvas ()->dpr () : 1.0;
  }

  double gamma = canvas () ? canvas ()->gamma () : 2.0;
  double dpr_drawing = canvas () ? 1.0 / canvas ()->resolution () : 1.0;
  unsigned int oversampling = canvas () ? canvas ()->oversampling () : 1;

  h = std::max ((unsigned int) 16, h) * oversampling * dpr + 0.5;
  w = std::max ((unsigned int) 16, w) * oversampling * dpr + 0.5;

  tl::color_t def_color   = 0x808080;
  tl::color_t fill_color  = iter->has_fill_color (true)  ? iter->eff_fill_color (true)  : def_color;
  tl::color_t frame_color = iter->has_frame_color (true) ? iter->eff_frame_color (true) : def_color;

  tl::PixelBuffer image (w, h);
  image.set_transparent (true);
  image.fill (background_color ().rgb ());

  //  upper scanline is a dummy one
  tl::color_t *sl0 = (uint32_t *) image.scan_line (0);
  for (size_t i = 0; i < w; ++i) {
    *sl0++ = 0;
  }

  lay::Bitmap fill (w, h, 1.0, 1.0);
  lay::Bitmap frame (w, h, 1.0, 1.0);
  lay::Bitmap text (w, h, 1.0, 1.0);
  lay::Bitmap vertex (w, h, 1.0, 1.0);

  unsigned int wp = w - 1;

  if (! no_state && ! iter->visible (true)) {

    wp = w / 4;

    //  Show the arrow if it is invisible also locally.
    if (! iter->visible (false)) {

      unsigned int aw = h / 4;
      unsigned int ap = w / 2 - 1;
      for (unsigned int i = 0; i <= aw; ++i) {
        text.fill (h / 2 - 1 - i, ap, ap + aw - i + 1);
        text.fill (h / 2 - 1 + i, ap, ap + aw - i + 1);
      }

    }

  }

  if (! no_state && no_stipples ()) {
    //  Show a partial stipple pattern only for "no stipple" mode
    for (unsigned int i = 1; i < h - 2; ++i) {
      fill.fill (i, w - 1 - w / 4, w);
    }