- for (int i = -60; i <= 0; i += 10) {
- int const y = height - (i + 60) * ys;
- grid.MoveToPoint (0, y);
- grid.AddLineToPoint (width, y);
- gc->DrawText (std_to_wx (String::compose ("%1dB", i)), width - 32, y - 12);
+ wxDouble db_label_width;
+ wxDouble db_label_height;
+ wxDouble db_label_descent;
+ wxDouble db_label_leading;
+ gc->GetTextExtent (_("-80dB"), &db_label_width, &db_label_height, &db_label_descent, &db_label_leading);
+
+ db_label_width += 8;
+
+ int const data_width = GetSize().GetWidth() - db_label_width;
+ /* Assume all channels have the same number of points */
+ float const xs = data_width / float (_analysis->points (0));
+ int const height = GetSize().GetHeight ();
+ int const yo = 32;
+ float const ys = (height - yo) / -_minimum;
+
+ for (int i = _minimum; i <= 0; i += 10) {
+ int const y = (height - (i - _minimum) * ys) - yo;
+ grid.MoveToPoint (db_label_width - 4, y);
+ grid.AddLineToPoint (db_label_width + data_width, y);
+ gc->DrawText (std_to_wx (String::compose ("%1dB", i)), 0, y - (db_label_height / 2));