#include "ecore_xcb_private.h"
#ifdef ECORE_XCB_COMPOSITE
# include <xcb/composite.h>
#endif

/* local variables */
static Eina_Bool _composite_avail = EINA_FALSE;

void
_ecore_xcb_composite_init(void)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);

#ifdef ECORE_XCB_COMPOSITE
   xcb_prefetch_extension_data(_ecore_xcb_conn, &xcb_composite_id);
#endif
}

void
_ecore_xcb_composite_finalize(void)
{
#ifdef ECORE_XCB_COMPOSITE
   const xcb_query_extension_reply_t *ext_reply;
#endif

   LOGFN(__FILE__, __LINE__, __FUNCTION__);

#ifdef ECORE_XCB_COMPOSITE
   ext_reply = xcb_get_extension_data(_ecore_xcb_conn, &xcb_composite_id);
   if ((ext_reply) && (ext_reply->present))
     {
        xcb_composite_query_version_cookie_t cookie;
        xcb_composite_query_version_reply_t *reply;

        cookie =
          xcb_composite_query_version_unchecked(_ecore_xcb_conn,
                                                XCB_COMPOSITE_MAJOR_VERSION,
                                                XCB_COMPOSITE_MINOR_VERSION);
        reply =
          xcb_composite_query_version_reply(_ecore_xcb_conn, cookie, NULL);
        if (reply)
          {
//             if ((reply->major_version >= XCB_COMPOSITE_MAJOR_VERSION) &&
               if (reply->minor_version >= XCB_COMPOSITE_MINOR_VERSION)
                 {
# ifdef ECORE_XCB_RENDER
                    if (_ecore_xcb_render_avail_get())
                      {
#  ifdef ECORE_XCB_XFIXES
                         if (_ecore_xcb_xfixes_avail_get())
                           _composite_avail = EINA_TRUE;
#  endif
                      }
# endif
                 }

               free(reply);
          }
     }
#endif
}

/**
 * @defgroup Ecore_X_Composite_Group X Composite Extension Functions
 * @ingroup Ecore_X_Group
 *
 * Functions related to the X Composite Extension
 */

/**
 * Return whether the Composite Extension is available
 *
 * @return @c EINA_TRUE is the Composite Extension is available, @c EINA_FALSE
 * if not.
 *
 * @ingroup Ecore_X_Composite_Group
 */
EAPI Eina_Bool
ecore_x_composite_query(void)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return _composite_avail;
}

EAPI void
ecore_x_composite_redirect_window(Ecore_X_Window                win,
                                  Ecore_X_Composite_Update_Type type)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_COMPOSITE
   uint8_t update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;

   switch (type)
     {
      case ECORE_X_COMPOSITE_UPDATE_AUTOMATIC:
        update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;
        break;

      case ECORE_X_COMPOSITE_UPDATE_MANUAL:
        update = XCB_COMPOSITE_REDIRECT_MANUAL;
        break;
     }
   xcb_composite_redirect_window(_ecore_xcb_conn, win, update);
//   ecore_x_flush();
#endif
}

EAPI void
ecore_x_composite_redirect_subwindows(Ecore_X_Window                win,
                                      Ecore_X_Composite_Update_Type type)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_COMPOSITE
   uint8_t update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;

   switch (type)
     {
      case ECORE_X_COMPOSITE_UPDATE_AUTOMATIC:
        update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;
        break;

      case ECORE_X_COMPOSITE_UPDATE_MANUAL:
        update = XCB_COMPOSITE_REDIRECT_MANUAL;
        break;
     }
   xcb_composite_redirect_subwindows(_ecore_xcb_conn, win, update);
//   ecore_x_flush();
#endif
}

EAPI void
ecore_x_composite_unredirect_window(Ecore_X_Window                win,
                                    Ecore_X_Composite_Update_Type type)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_COMPOSITE
   uint8_t update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;

   switch (type)
     {
      case ECORE_X_COMPOSITE_UPDATE_AUTOMATIC:
        update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;
        break;

      case ECORE_X_COMPOSITE_UPDATE_MANUAL:
        update = XCB_COMPOSITE_REDIRECT_MANUAL;
        break;
     }
   xcb_composite_unredirect_window(_ecore_xcb_conn, win, update);
//   ecore_x_flush();
#endif
}

EAPI void
ecore_x_composite_unredirect_subwindows(Ecore_X_Window                win,
                                        Ecore_X_Composite_Update_Type type)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_COMPOSITE
   uint8_t update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;

   switch (type)
     {
      case ECORE_X_COMPOSITE_UPDATE_AUTOMATIC:
        update = XCB_COMPOSITE_REDIRECT_AUTOMATIC;
        break;

      case ECORE_X_COMPOSITE_UPDATE_MANUAL:
        update = XCB_COMPOSITE_REDIRECT_MANUAL;
        break;
     }
   xcb_composite_unredirect_subwindows(_ecore_xcb_conn, win, update);
//   ecore_x_flush();
#endif
}

EAPI Ecore_X_Pixmap
ecore_x_composite_name_window_pixmap_get(Ecore_X_Window win)
{
#ifdef ECORE_XCB_COMPOSITE
   Ecore_X_Pixmap pmap = XCB_NONE;
#endif

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return XCB_NONE;

#ifdef ECORE_XCB_COMPOSITE
   pmap = xcb_generate_id(_ecore_xcb_conn);
   xcb_composite_name_window_pixmap(_ecore_xcb_conn, win, pmap);
//   ecore_x_flush();
#endif

   return pmap;
}

EAPI void
ecore_x_composite_window_events_disable(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_SHAPE
   ecore_x_window_shape_input_rectangle_set(win, -1, -1, 1, 1);
//   ecore_x_flush();
#else
   return;
   win = 0;
#endif
}

EAPI void
ecore_x_composite_window_events_enable(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_SHAPE
   ecore_x_window_shape_input_rectangle_set(win, 0, 0, 65535, 65535);
//   ecore_x_flush();
#else
   return;
   win = 0;
#endif
}

EAPI Ecore_X_Window
ecore_x_composite_render_window_enable(Ecore_X_Window root)
{
   Ecore_X_Window win = 0;
#ifdef ECORE_XCB_COMPOSITE
   xcb_composite_get_overlay_window_cookie_t cookie;
   xcb_composite_get_overlay_window_reply_t *reply;
#endif

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return 0;

#ifdef ECORE_XCB_COMPOSITE
   cookie = xcb_composite_get_overlay_window_unchecked(_ecore_xcb_conn, root);
   reply =
     xcb_composite_get_overlay_window_reply(_ecore_xcb_conn, cookie, NULL);
   if (!reply) return win;

   win = reply->overlay_win;
   free(reply);

   ecore_x_composite_window_events_disable(win);
//   ecore_x_flush();
#endif

   return win;
}

EAPI void
ecore_x_composite_render_window_disable(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   CHECK_XCB_CONN;

   if (!_composite_avail) return;

#ifdef ECORE_XCB_COMPOSITE
   xcb_composite_release_overlay_window(_ecore_xcb_conn, win);
//   ecore_x_flush();
#endif
}