Function FillUpTo

src/effects/DynamicRangeProcessorHistoryPanel.cpp:188–204

! * Fills the area between the lines and the bottom of the panel with the given * color. */

 * color.
 */
void FillUpTo(
   std::vector<wxPoint2DDouble> lines, const wxColor& color,
   wxGraphicsContext& gc, const wxRect& rect)
{
   const auto height = rect.GetHeight();
   const auto left = std::max<double>(rect.GetX(), lines.front().m_x);
   const auto right = std::min<double>(rect.GetWidth(), lines.back().m_x);
   auto area = gc.CreatePath();
   area.MoveToPoint(right, height);
   area.AddLineToPoint(left, height);
   std::for_each(lines.begin(), lines.end(), [&area](const auto& p) {
      area.AddLineToPoint(p);
   });
   area.CloseSubpath();
   gc.SetBrush(color);
   gc.FillPath(area);
}

void DrawLegend(size_t height, wxPaintDC& dc, wxGraphicsContext& gc)
{