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Implemented solution for #2057 (nanometer scalebar) 

The scale bar switches to nm below 0.1µm. Correspondingly
it will switch to mm above 100µm.
This commit is contained in:
Matthias Koefferlein 2025-05-25 21:28:11 +02:00
parent 7b865451ee
commit 6cccb81293
1 changed files with 16 additions and 1 deletions
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17
src/layview/layview/layGridNet.cc
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@ -538,7 +538,22 @@ GridNet::render_bg (const lay::Viewport &vp, ViewObjectCanvas &canvas)
db::Point (xoffset + int (floor (0.5 + 2 * dgrid)), vp.height () - yoffset + rh / 2),
ruler_color);
painter.draw_text (tl::sprintf ("%g \265m", grid * 2).c_str (),
double grid_value = grid * 2;
std::string fmt = "%g \265m";
if (grid_value < 0.1 * (1 + db::epsilon)) {
grid_value *= 1000.0;
fmt = "%g nm";
} else if (grid_value < 100.0 * (1 + db::epsilon)) {
fmt = "%g \265m";
} else if (grid_value < 100000.0 * (1 + db::epsilon)) {
grid_value *= 1e-3;
fmt = "%g mm";
} else {
grid_value *= 1e-6;
fmt = "%g m";
}
painter.draw_text (tl::sprintf (fmt, grid_value).c_str (),
db::Point (xoffset + int (floor (0.5 + trans.ctrans (2 * grid))), vp.height () - yoffset - rh / 2 - 2),
ruler_color, -1, 1);