function layout_breakpoint_load_all in Layout 7
API function to get all responsive breakpoint on the site.
3 calls to layout_breakpoint_load_all()
- layout_breakpoint_get_css in ./layout.module 
- Build CSS for the breakpoints with media queries.
- theme_layout_responsive in plugins/layouts/ responsive.inc 
- Draw the responsive layout.
- theme_layout_responsive_admin in plugins/layouts/ responsive.inc 
- Draw the responsive layout admin interface.
File
- ./layout.module, line 249 
- Responsive layout builder tool for Panels.
Code
function layout_breakpoint_load_all() {
  ctools_include('export');
  $breakpoints = ctools_export_crud_load_all('layout_breakpoint');
  uasort($breakpoints, 'layout_breakpoint_sort_by_width');
  return $breakpoints;
}