sdl_rail_platform.cpp

 
#include "sdl_rail_platform.hpp"
#include "sdl_utils.hpp"
#include "sdl_x11.hpp"
 
static RailPlatformCaps detectRailPlatformCaps()
{
  RailPlatformCaps caps;
  if (sdl::utils::isWaylandDriver())
  {
    /* Wayland: toplevels can't be positioned or queried; its compositor always composites. */
    caps.positionsReadable = false;
    caps.supportsTransparentWindows = true;
    caps.supportsRestack = false;
  }
  else
  {
    /* Check position readability and transparency support for non-Wayland backends. */
    caps.positionsReadable = true;
    caps.supportsTransparentWindows = sdl_x11_has_compositor();
    caps.supportsRestack = sdl::utils::isX11Driver();
  }
  return caps;
}
 
const RailPlatformCaps& railPlatformCaps()
{
  static const RailPlatformCaps caps = detectRailPlatformCaps();
  return caps;
}