EngineProcessViewContext_linux.h

 
#include <xcb/xcb.h>
 
plEditorProcessViewWindow::~plEditorProcessViewWindow()
{
  if (m_hWnd.type == plWindowHandle::Type::XCB)
  {
    plGALDevice::GetDefaultDevice()->WaitIdle();
 
    PL_ASSERT_DEV(m_iReferenceCount == 0, "The window is still being referenced, probably by a swapchain. Make sure to destroy all swapchains and call plGALDevice::WaitIdle before destroying a window.");
    xcb_disconnect(m_hWnd.xcbWindow.m_pConnection);
    m_hWnd.xcbWindow.m_pConnection = nullptr;
    m_hWnd.type = plWindowHandle::Type::Invalid;
  }
}
 
plResult plEditorProcessViewWindow::UpdateWindow(plWindowHandle parentWindow, plUInt16 uiWidth, plUInt16 uiHeight)
{
  if (m_hWnd.type == plWindowHandle::Type::Invalid)
  {
    // xcb_connect always returns a non-NULL pointer to a xcb_connection_t,
    // even on failure. Callers need to use xcb_connection_has_error() to
    // check for failure. When finished, use xcb_disconnect() to close the
    // connection and free the structure.
    int scr = 0;
    m_hWnd.type = plWindowHandle::Type::XCB;
    m_hWnd.xcbWindow.m_pConnection = xcb_connect(NULL, &scr);
    if (auto err = xcb_connection_has_error(m_hWnd.xcbWindow.m_pConnection); err != 0)
    {
      plLog::Error("Could not connect to x11 via xcb. Error-Code '{}'", err);
      xcb_disconnect(m_hWnd.xcbWindow.m_pConnection);
      m_hWnd.xcbWindow.m_pConnection = nullptr;
      m_hWnd.type = plWindowHandle::Type::Invalid;
      return PL_FAILURE;
    }
 
    m_hWnd.xcbWindow.m_Window = parentWindow.xcbWindow.m_Window;
  }
 
  m_uiWidth = uiWidth;
  m_uiHeight = uiHeight;
  PL_ASSERT_DEV(parentWindow.type == plWindowHandle::Type::XCB && parentWindow.xcbWindow.m_Window != 0, "Invalid handle passed");
  PL_ASSERT_DEV(m_hWnd.xcbWindow.m_Window == parentWindow.xcbWindow.m_Window, "Remote window handle should never change. Window must be destroyed and recreated.");
 
  return PL_SUCCESS;
}