summaryrefslogtreecommitdiff
path: root/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_randr_12.c
blob: 3be89ac1d5e7d1366bcc76586d16bbceca6baccd (plain)
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/*
 * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "ecore_x_private.h"
#include "ecore_x_randr.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#define Ecore_X_Randr_None  (Ecore_X_Randr_Crtc)0
#define Ecore_X_Randr_Unset (Ecore_X_Randr_Crtc) - 1

#ifdef ECORE_XRANDR

#define RANDR_1_2           ((1 << 16) | 2)

#define RANDR_VALIDATE_ROOT(screen, root) \
  ((screen = XRRRootToScreen(_ecore_x_disp, root)) != -1)

#define RANDR_CHECK_1_2_RET(ret) if (_randr_version < RANDR_1_2) \
    return ret

#define RANDR_PROPERTY_EDID               "EDID"
#define RANDR_PROPERTY_BACKLIGHT          "Backlight"
#define RANDR_PROPERTY_SIGNAL_FORMAT      "SignalFormat"
#define RANDR_PROPERTY_SIGNAL_PROPERTIES  "SignalProperties"
#define RANDR_PROPERTY_CONNECTOR_TYPE     "ConnectorType"
#define RANDR_PROPERTY_CONNECTOR_NUMBER   "ConnectorNumber"
#define RANDR_PROPERTY_COMPATIBILITY_LIST "CompatibilityList"
#define RANDR_PROPERTY_CLONE_LIST         "CloneList"

extern XRRScreenResources *(*_ecore_x_randr_get_screen_resources)(Display *
                                                                  dpy,
                                                                  Window
                                                                  window);
extern int _randr_version;
#endif

/**
 * @brief Enable event selection. This enables basic interaction with
 * output/crtc events and requires RandR >= 1.2.
 *
 * @param win Select this window's properties for RandR events.
 * @param on Enable/disable selecting.
 */
EAPI void
ecore_x_randr_events_select(Ecore_X_Window win,
                            Eina_Bool on)
{
#ifdef ECORE_XRANDR
   int mask;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!on)
     mask = 0;
   else
     {
        mask = RRScreenChangeNotifyMask;
        if (_randr_version >= RANDR_1_2)
          mask |= (RRCrtcChangeNotifyMask |
                   RROutputChangeNotifyMask |
                   RROutputPropertyNotifyMask);
     }

   XRRSelectInput(_ecore_x_disp, win, mask);
#endif
}

/**
 * @brief Validates a CRTC for a given root window's screen.
 *
 * @param root The window which's default display will be queried.
 * @param crtc The CRTC to be validated.
 * @return In case it is found, @c EINA_TRUE will be returned, @c EINA_FALSE
 * otherwise.
 */
static inline Eina_Bool
_ecore_x_randr_crtc_validate(Ecore_X_Window root,
                             Ecore_X_Randr_Crtc crtc)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   XRRScreenResources *res = NULL;
   int i;
   Eina_Bool ret = EINA_FALSE;

   if ((crtc == Ecore_X_Randr_None) ||
       (crtc == Ecore_X_Randr_Unset))
     return ret;

   if (_ecore_x_randr_root_validate(root) && crtc &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        for (i = 0; i < res->ncrtc; i++)
          {
             if (res->crtcs[i] == crtc)
               {
                  ret = EINA_TRUE;
                  break;
               }
          }
        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return EINA_FALSE;
#endif
}

Eina_Bool
_ecore_x_randr_output_validate(Ecore_X_Window root,
                               Ecore_X_Randr_Output output)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   Eina_Bool ret = EINA_FALSE;
   XRRScreenResources *res = NULL;
   int i;

   if (_ecore_x_randr_root_validate(root) && output &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        for (i = 0; i < res->noutput; i++)
          {
             if (res->outputs[i] == output)
               {
                  ret = EINA_TRUE;
                  break;
               }
          }
        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return EINA_FALSE;
#endif
}

static inline Eina_Bool
_ecore_x_randr_mode_validate(Ecore_X_Window root,
                             Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   Eina_Bool ret = EINA_FALSE;
   XRRScreenResources *res = NULL;
   int i;

   if (_ecore_x_randr_root_validate(root) && mode &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        for (i = 0; i < res->nmode; i++)
          {
             if (res->modes[i].id == mode)
               {
                  ret = EINA_TRUE;
                  break;
               }
          }
        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return EINA_FALSE;
#endif
}

/*
 * @param w width of screen in px
 * @param h height of screen in px
 */
EAPI void
ecore_x_randr_screen_current_size_get(Ecore_X_Window root,
                                      int *w,
                                      int *h,
                                      int *w_mm,
                                      int *h_mm)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   Ecore_X_Randr_Screen scr;

   if (!RANDR_VALIDATE_ROOT(scr, root))
     return;

   if (w)
     *w = DisplayWidth(_ecore_x_disp, scr);

   if (h)
     *h = DisplayHeight(_ecore_x_disp, scr);

   if (w_mm)
     *w_mm = DisplayWidthMM(_ecore_x_disp, scr);

   if (h_mm)
     *h_mm = DisplayHeightMM(_ecore_x_disp, scr);

#endif
}

/*
 * @param root window which's screen will be queried
 * @param wmin minimum width the screen can be set to
 * @param hmin minimum height the screen can be set to
 * @param wmax maximum width the screen can be set to
 * @param hmax maximum height the screen can be set to
 */
EAPI void
ecore_x_randr_screen_size_range_get(Ecore_X_Window root,
                                    int *wmin,
                                    int *hmin,
                                    int *wmax,
                                    int *hmax)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   int twmin, thmin, twmax, thmax;
   if (XRRGetScreenSizeRange (_ecore_x_disp, root, &twmin, &thmin, &twmax,
                              &thmax))
     {
        if (wmin)
          *wmin = twmin;

        if (hmin)
          *hmin = thmin;

        if (wmax)
          *wmax = twmax;

        if (hmax)
          *hmax = thmax;
     }

#endif
}

/*
 * @param root Window which's screen's size should be set. If invalid (e.g. 
 * @c NULL) no action is taken.
 * @param w Width in px the screen should be set to. If out of valid
 * boundaries, current value is assumed.
 * @param h Height in px the screen should be set to. If out of valid
 * boundaries, current value is assumed.
 * @param w_mm Width in mm the screen should be set to. If @c 0, current
 * aspect is assumed.
 * @param h_mm Height in mm the screen should be set to. If @c 0, current
 * aspect is assumed.
 * @return @c EINA_TRUE if request was successfully sent or screen is already
 * in requested size, @c EINA_FALSE if parameters are invalid.
 */
EAPI Eina_Bool
ecore_x_randr_screen_current_size_set(Ecore_X_Window root,
                                      int w,
                                      int h,
                                      int w_mm,
                                      int h_mm)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   Ecore_X_Randr_Screen scr;
   int w_c, h_c, w_mm_c, h_mm_c, twmin, thmin, twmax, thmax;

   if (!RANDR_VALIDATE_ROOT(scr, root))
     return EINA_FALSE;

   ecore_x_randr_screen_current_size_get(root, &w_c, &h_c, &w_mm_c, &h_mm_c);
   if ((w == w_c) && (h == h_c) && (w_mm_c == w_mm) && (h_mm_c == h_mm))
     return EINA_TRUE;

   ecore_x_randr_screen_size_range_get(root, &twmin, &thmin, &twmax, &thmax);

   if (((w != Ecore_X_Randr_None) &&
        ((w < twmin) ||
         (w > twmax))) ||
       ((h != Ecore_X_Randr_None) && ((h < thmin) || (h > thmax))))
     return EINA_FALSE;

   if (w <= 0)
     w = DisplayWidth(_ecore_x_disp, scr);

   if (h <= 0)
     h = DisplayHeight(_ecore_x_disp, scr);

   if (w_mm <= 0)
     w_mm =
       (int)(((double)(DisplayWidthMM(_ecore_x_disp,
                                      scr) /
                       (double)DisplayWidth(_ecore_x_disp,
                                            scr))) * (double)w);

   if (h_mm <= 0)
     h_mm =
       (int)(((double)(DisplayHeightMM(_ecore_x_disp,
                                       scr) /
                       (double)DisplayHeight(_ecore_x_disp,
                                             scr))) * (double)h);

   XRRSetScreenSize (_ecore_x_disp, root, w, h, w_mm, h_mm);
   return EINA_TRUE;
#else
   return EINA_FALSE;
#endif
}

/*
 * @brief get detailed information for all modes related to a root window's screen
 * @param root window which's screen's ressources are queried
 * @param num number of modes returned
 * @return modes' information
 */
EAPI Ecore_X_Randr_Mode_Info **
ecore_x_randr_modes_info_get(Ecore_X_Window root,
                             int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Mode_Info **ret = NULL;
   int i;

   if (_ecore_x_randr_root_validate(root) &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        if ((ret =
               (Ecore_X_Randr_Mode_Info **)malloc(sizeof(
                                                    Ecore_X_Randr_Mode_Info *)
                                                  *
                                                  res->nmode)))
          {
             for (i = 0; i < res->nmode; i++)
               {
                  if ((ret[i] = malloc(sizeof(Ecore_X_Randr_Mode_Info))))
                    {
                       ret[i]->xid = res->modes[i].id;
                       ret[i]->width = res->modes[i].width;
                       ret[i]->height = res->modes[i].height;
                       ret[i]->dotClock = res->modes[i].dotClock;
                       ret[i]->hSyncStart = res->modes[i].hSyncStart;
                       ret[i]->hSyncEnd = res->modes[i].hSyncEnd;
                       ret[i]->hTotal = res->modes[i].hTotal;
                       ret[i]->hSkew = res->modes[i].hSkew;
                       ret[i]->vSyncStart = res->modes[i].vSyncStart;
                       ret[i]->vSyncEnd = res->modes[i].vSyncEnd;
                       ret[i]->vTotal = res->modes[i].vTotal;
                       if ((ret[i]->name = (malloc(res->modes[i].nameLength + 1))))
                         strncpy(ret[i]->name, res->modes[i].name,
                                 (res->modes[i].nameLength + 1));
                       else
                         ret[i]->name = NULL;

                       ret[i]->nameLength = res->modes[i].nameLength;
                       ret[i]->modeFlags = res->modes[i].modeFlags;
                    }
                  else
                    {
                       while (i > 0)
                         free(ret[--i]);
                       free(ret);
                       ret = NULL;
                       break;
                    }
               }
          }

        if (ret && num)
          *num = res->nmode;

        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return NULL;
#endif
}

/*
 * @brief Add a mode to a display.
 *
 * @param root Window to which's screen's ressources are added.
 * @param mode_info
 * @return Ecore_X_Randr_Mode of the added mode. Ecore_X_Randr_None if mode
 * adding failed.
 * @since 1.2.0
 */
EAPI Ecore_X_Randr_Mode
ecore_x_randr_mode_info_add(Ecore_X_Window root,
                            Ecore_X_Randr_Mode_Info *mode_info)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);
   Ecore_X_Randr_Mode mode = Ecore_X_Randr_None;

   if (_ecore_x_randr_root_validate(root) && mode_info)
     mode = XRRCreateMode(_ecore_x_disp, root, (XRRModeInfo*)mode_info);

   return mode;
#else
   return Ecore_X_Randr_None;
#endif
}

/*
 * @brief Delete a mode from the display.
 *
 * @param mode_info
 * @since 1.2.0
 */
EAPI void
ecore_x_randr_mode_del(Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();

   XRRDestroyMode(_ecore_x_disp, mode);
#else
   return;
#endif
}

/*
 * @brief get detailed information for a given mode id
 * @param root window which's screen's ressources are queried
 * @param mode the XID which identifies the mode of interest
 * @return mode's detailed information
 */
EAPI Ecore_X_Randr_Mode_Info *
ecore_x_randr_mode_info_get(Ecore_X_Window root,
                            Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Mode_Info *ret = NULL;
   int i;

   if (_ecore_x_randr_root_validate(root) &&
       (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
     {
        for (i = 0; i < res->nmode; i++)
          {
             if ((res->modes[i].id == mode) &&
                 (ret = malloc(sizeof(Ecore_X_Randr_Mode_Info))))
               {
                  ret->xid = res->modes[i].id;
                  ret->width = res->modes[i].width;
                  ret->height = res->modes[i].height;
                  ret->dotClock = res->modes[i].dotClock;
                  ret->hSyncStart = res->modes[i].hSyncStart;
                  ret->hSyncEnd = res->modes[i].hSyncEnd;
                  ret->hTotal = res->modes[i].hTotal;
                  ret->hSkew = res->modes[i].hSkew;
                  ret->vSyncStart = res->modes[i].vSyncStart;
                  ret->vSyncEnd = res->modes[i].vSyncEnd;
                  ret->vTotal = res->modes[i].vTotal;
                  ret->name = NULL;
                  ret->nameLength = 0;
                  if (res->modes[i].nameLength > 0)
                    {
                       ret->nameLength = res->modes[i].nameLength;
                       ret->name = malloc(res->modes[i].nameLength + 1);
                       if (ret->name)
                         memcpy(ret->name, res->modes[i].name,
                                res->modes[i].nameLength + 1);
                    }
                  ret->modeFlags = res->modes[i].modeFlags;
                  break;
               }
          }
        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return NULL;
#endif
}

/*
 * @brief Free detailed mode information. The pointer handed in will be set to
 * @c NULL after freeing the memory.
 *
 * @param mode_info The mode information that should be freed.
 */
EAPI void
ecore_x_randr_mode_info_free(Ecore_X_Randr_Mode_Info *mode_info)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   if (!mode_info)
     return;

   if (mode_info->name)
     free(mode_info->name);

   free(mode_info);
   mode_info = NULL;
#endif
}

/*
 * @brief Get all known CRTCs related to a root window's screen.
 *
 * @param root Window which's screen's ressources are queried.
 * @param num Number of CRTCs returned.
 * @return CRTC IDs.
 */
EAPI Ecore_X_Randr_Crtc *
ecore_x_randr_crtcs_get(Ecore_X_Window root,
                        int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Crtc *ret = NULL;

   if (num && root &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        if ((ret = malloc(sizeof(Ecore_X_Randr_Crtc) * res->ncrtc)))
          {
             memcpy(ret, res->crtcs, (sizeof(Ecore_X_Randr_Crtc) * res->ncrtc));
             *num = res->ncrtc;
          }

        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return NULL;
#endif
}

/*
 * @deprecated bad naming. Use ecore_x_randr_window_crtcs_get instead.
 * @brief get the CRTCs, which display a certain window
 * @param window window the displaying crtcs shall be found for
 * @param num the number of crtcs displaying the window
 * @return Array of crtcs that display a certain window. @c NULL if no crtcs
 * was found that displays the specified window.
 */
EAPI Ecore_X_Randr_Crtc *
ecore_x_randr_current_crtc_get(Ecore_X_Window window,
                               int *num)
{
   return ecore_x_randr_window_crtcs_get(window, num);
}

/*
 * @brief get the CRTCs, which display a certain window
 * @param window window the displaying crtcs shall be found for
 * @param num the number of crtcs displaying the window
 * @return Array of crtcs that display a certain window. @c NULL if no crtcs
 * was found that displays the specified window.
 * @since 1.2.0
 */
EAPI Ecore_X_Randr_Crtc *
ecore_x_randr_window_crtcs_get(Ecore_X_Window window,
                               int *num)
{
#ifdef ECORE_XRANDR
   Ecore_X_Window root;
   Eina_Rectangle w_geo, c_geo;
   Ecore_X_Randr_Crtc *crtcs;
   Ecore_X_Randr_Mode mode;
   Ecore_X_Randr_Output *ret = NULL;
   Window tw;
   int ncrtcs, i, nret = 0, rx = 0, ry = 0;

   if (_randr_version < RANDR_1_2) goto _ecore_x_randr_window_crtcs_get_fail;

   ecore_x_window_geometry_get(window,
                               &w_geo.x, &w_geo.y,
                               &w_geo.w, &w_geo.h);

   root = ecore_x_window_root_get(window);
   crtcs = ecore_x_randr_crtcs_get(root, &ncrtcs);
   if (!crtcs) goto _ecore_x_randr_window_crtcs_get_fail;

   /* now get window RELATIVE to root window - thats what matters. */
   XTranslateCoordinates(_ecore_x_disp, window, root, 0, 0, &rx, &ry, &tw);
   w_geo.x = rx;
   w_geo.y = ry;

   ret = calloc(1, ncrtcs * sizeof(Ecore_X_Randr_Crtc));
   if (!ret)
     {
        free(crtcs);
        goto _ecore_x_randr_window_crtcs_get_fail;
     }
   for (i = 0, nret = 0; i < ncrtcs; i++)
     {
        /* if crtc is not enabled, don't bother about it any further */
        mode = ecore_x_randr_crtc_mode_get(root, crtcs[i]);
        if (mode == Ecore_X_Randr_None) continue;

        ecore_x_randr_crtc_geometry_get(root, crtcs[i],
                                        &c_geo.x, &c_geo.y,
                                        &c_geo.w, &c_geo.h);
        if (eina_rectangles_intersect(&w_geo, &c_geo))
          {
             ret[nret] = crtcs[i];
             nret++;
          }
     }
   free(crtcs);

   if (num) *num = nret;
   return ret;

_ecore_x_randr_window_crtcs_get_fail:
#endif
   if (num) *num = 0;
   return NULL;
}

EAPI Ecore_X_Randr_Output *
ecore_x_randr_outputs_get(Ecore_X_Window root,
                          int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Output *ret = NULL;

   if (root && 
       (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
     {
        if ((ret = malloc(sizeof(Ecore_X_Randr_Output) * res->noutput)))
          {
             memcpy(ret, res->outputs,
                    (sizeof(Ecore_X_Randr_Output) * res->noutput));
             if (num)
               *num = res->noutput;
          }

        if (res)
          XRRFreeScreenResources(res);
     }

   return ret;
#else
   return NULL;
#endif
}

//Per Crtc
/*
 * @brief get a CRTC's outputs.
 * @param root the root window which's screen will be queried
 * @param num number of outputs referenced by given CRTC
 */
EAPI Ecore_X_Randr_Output *
ecore_x_randr_crtc_outputs_get(Ecore_X_Window root,
                               Ecore_X_Randr_Crtc crtc,
                               int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Output *ret = NULL;
   XRRCrtcInfo *crtc_info = NULL;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res =
          _ecore_x_randr_get_screen_resources (_ecore_x_disp,
                                               root)) &&
       (crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
     {
        if ((ret = malloc(sizeof(Ecore_X_Randr_Output) * crtc_info->noutput)))
          {
             memcpy(ret, crtc_info->outputs,
                    (sizeof(Ecore_X_Randr_Output) * crtc_info->noutput));
             if (num)
               *num = crtc_info->noutput;
          }

        if (crtc_info)
          XRRFreeCrtcInfo(crtc_info);

        if (res)
          XRRFreeScreenResources(res);
     }

   return ret;
#else
   return NULL;
#endif
}

/*
 * @brief get a CRTC's possible outputs.
 * @param root the root window which's screen will be queried
 * @param num number of possible outputs referenced by given CRTC
 */
EAPI Ecore_X_Randr_Output *
ecore_x_randr_crtc_possible_outputs_get(Ecore_X_Window root,
                                        Ecore_X_Randr_Crtc crtc,
                                        int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Output *ret = NULL;
   XRRCrtcInfo *crtc_info = NULL;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        if ((crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
          {
             if ((ret =
                    malloc(sizeof(Ecore_X_Randr_Output) * crtc_info->npossible)))
               {
                  memcpy(ret, crtc_info->possible,
                         (sizeof(Ecore_X_Randr_Output) * crtc_info->npossible));
                  if (num)
                    *num = res->ncrtc;
               }

             XRRFreeCrtcInfo(crtc_info);
          }

        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return NULL;
#endif
}

EAPI void
ecore_x_randr_crtc_geometry_get(Ecore_X_Window root,
                                Ecore_X_Randr_Crtc crtc,
                                int *x,
                                int *y,
                                int *w,
                                int *h)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   XRRScreenResources *res = NULL;
   XRRCrtcInfo *crtc_info = NULL;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res =
          _ecore_x_randr_get_screen_resources (_ecore_x_disp,
                                               root)) &&
       (crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
     {
        if (x)
          *x = crtc_info->x;

        if (y)
          *y = crtc_info->y;

        if (w)
          *w = crtc_info->width;

        if (h)
          *h = crtc_info->height;

        XRRFreeCrtcInfo(crtc_info);
        XRRFreeScreenResources(res);
     }

#endif
}

/*
 * @brief Sets the position of given CRTC within root window's screen.
 *
 * @param root The window's screen to be queried.
 * @param crtc The CRTC which's position within the mentioned screen is to be
 * altered.
 * @param x Position on the x-axis (0 == left) of the screen. if x < 0 current
 * value will be kept.
 * @param y Position on the y-ayis (0 == top) of the screen. if y < 0, current
 * value will be kept.
 * @return @c EINA_TRUE if position could successfully be altered.
 */
EAPI Eina_Bool
ecore_x_randr_crtc_pos_set(Ecore_X_Window root,
                           Ecore_X_Randr_Crtc crtc,
                           int x,
                           int y)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);
   int w_c, h_c, w_new = 0, h_new = 0;
   Eina_Rectangle crtc_geo;

   ecore_x_randr_crtc_geometry_get(root,
                                   crtc,
                                   &crtc_geo.x,
                                   &crtc_geo.y,
                                   &crtc_geo.w,
                                   &crtc_geo.h);
   ecore_x_randr_screen_current_size_get(root, &w_c, &h_c, NULL, NULL);
   if (x < 0)
     x = crtc_geo.x;

   if (y < 0)
     y = crtc_geo.y;

   if ((x + crtc_geo.w) > w_c)
     w_new = x + crtc_geo.w;

   if ((y + crtc_geo.h) > h_c)
     h_new = y + crtc_geo.h;

   if ((w_new != 0) || (h_new != 0))
     if (!ecore_x_randr_screen_current_size_set(root, w_new, h_new, 0, 0))
       return EINA_FALSE;

   return ecore_x_randr_crtc_settings_set(root,
                                          crtc,
                                          NULL,
                                          Ecore_X_Randr_Unset,
                                          x,
                                          y,
                                          Ecore_X_Randr_Unset,
                                          Ecore_X_Randr_Unset);
#else
   return EINA_FALSE;
#endif
}

/**
 * @brief Get the current set mode of a given CRTC
 * @param root the window's screen to be queried
 * @param crtc the CRTC which's should be queried
 * @return currently set mode or - in case parameters are invalid -
 * Ecore_X_Randr_Unset
 */
EAPI Ecore_X_Randr_Mode
ecore_x_randr_crtc_mode_get(Ecore_X_Window root,
                            Ecore_X_Randr_Crtc crtc)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(Ecore_X_Randr_Unset);
   XRRScreenResources *res = NULL;
   XRRCrtcInfo *crtc_info = NULL;
   Ecore_X_Randr_Mode ret = Ecore_X_Randr_Unset;
   if (_ecore_x_randr_root_validate(root) &&
       _ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res =
          _ecore_x_randr_get_screen_resources(_ecore_x_disp,
                                              root)) &&
       (crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
     {
        ret = crtc_info->mode;
        XRRFreeCrtcInfo(crtc_info);
        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return Ecore_X_Randr_Unset;
#endif
}

/**
 * @brief Sets a mode for a CRTC and the outputs attached to it.
 *
 * @param root The window's screen to be queried.
 * @param crtc The CRTC which shall be set.
 * @param outputs Array of outputs which have to be compatible with the mode.
 * If @c NULL, CRTC will be disabled.
 * @param noutputs Number of outputs in array to be used. Use
 * Ecore_X_Randr_Unset (or @c -1) to use currently used outputs.
 * @param mode XID of the mode to be set. If set to @c 0 the CRTC will be
 * disabled. If set to @c -1 the call will fail.
 * @return @c EINA_TRUE if mode setting was successful, @c EINA_FALSE
 * otherwise.
 */
EAPI Eina_Bool
ecore_x_randr_crtc_mode_set(Ecore_X_Window root,
                            Ecore_X_Randr_Crtc crtc,
                            Ecore_X_Randr_Output *outputs,
                            int noutputs,
                            Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   if (mode == Ecore_X_Randr_Unset)
     return EINA_FALSE;

   return ecore_x_randr_crtc_settings_set(root,
                                          crtc,
                                          outputs,
                                          noutputs,
                                          Ecore_X_Randr_Unset,
                                          Ecore_X_Randr_Unset,
                                          mode,
                                          Ecore_X_Randr_Unset);
#else
   return EINA_FALSE;
#endif
}

EAPI void
ecore_x_randr_crtc_size_get(Ecore_X_Window root,
                            Ecore_X_Randr_Crtc crtc,
                            int *w,
                            int *h)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   ecore_x_randr_crtc_geometry_get(root, crtc, NULL, NULL, w, h);
#endif
}

EAPI Ecore_X_Randr_Refresh_Rate
ecore_x_randr_crtc_refresh_rate_get(Ecore_X_Window root,
                                    Ecore_X_Randr_Crtc crtc,
                                    Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(0.0);
   XRRScreenResources *res = NULL;
   XRRCrtcInfo *crtc_info = NULL;
   Ecore_X_Randr_Refresh_Rate ret = 0.0;
   int i;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        for (i = 0; i < res->nmode; i++)
          if (res->modes[i].id == mode)
            {
               if (res->modes[i].hTotal && res->modes[i].vTotal)
                 ret = ((double)res->modes[i].dotClock /
                        ((double)res->modes[i].hTotal *
                         (double)res->modes[i].vTotal));

               break;
            }
     }

   if (crtc_info)
     XRRFreeCrtcInfo(crtc_info);

   if (res)
     XRRFreeScreenResources(res);

   return ret;
#else
   return 0.0;
#endif
}

EAPI Ecore_X_Randr_Orientation
ecore_x_randr_crtc_orientations_get(Ecore_X_Window root,
                                    Ecore_X_Randr_Crtc crtc)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(Ecore_X_Randr_None);
   XRRCrtcInfo *crtc_info = NULL;
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Orientation ret = Ecore_X_Randr_None;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res =
          _ecore_x_randr_get_screen_resources (_ecore_x_disp,
                                               root)) &&
       (crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
     {
        ret = crtc_info->rotations;
     }
   if (crtc_info)
     XRRFreeCrtcInfo(crtc_info);

   if (res)
     XRRFreeScreenResources(res);

   return ret;
#else
   return Ecore_X_Randr_None;
#endif
}

EAPI Ecore_X_Randr_Orientation
ecore_x_randr_crtc_orientation_get(Ecore_X_Window root,
                                   Ecore_X_Randr_Crtc crtc)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(Ecore_X_Randr_None);
   XRRCrtcInfo *crtc_info = NULL;
   XRRScreenResources *res = NULL;
   Ecore_X_Randr_Orientation ret = Ecore_X_Randr_None;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res =
          _ecore_x_randr_get_screen_resources (_ecore_x_disp,
                                               root)) &&
       (crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
     {
        ret = crtc_info->rotation;
     }
   if (crtc_info)
     XRRFreeCrtcInfo(crtc_info);

   if (res)
     XRRFreeScreenResources(res);

   return ret;
#else
   return Ecore_X_Randr_None;
#endif
}

EAPI Eina_Bool
ecore_x_randr_crtc_orientation_set(Ecore_X_Window root,
                                   Ecore_X_Randr_Crtc crtc,
                                   Ecore_X_Randr_Orientation orientation)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);
   Eina_Bool ret = EINA_FALSE;

   if (orientation != Ecore_X_Randr_None)
     {
        ret = ecore_x_randr_crtc_settings_set(root,
                                              crtc,
                                              NULL,
                                              Ecore_X_Randr_Unset,
                                              Ecore_X_Randr_Unset,
                                              Ecore_X_Randr_Unset,
                                              Ecore_X_Randr_Unset,
                                              orientation);
     }

   return ret;
#else
   return EINA_FALSE;
#endif
}

EAPI void
ecore_x_randr_crtc_pos_get(Ecore_X_Window root,
                           Ecore_X_Randr_Crtc crtc,
                           int *x,
                           int *y)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();

   ecore_x_randr_crtc_geometry_get(root, crtc, x, y, NULL, NULL);
#endif
}

EAPI Eina_Bool
ecore_x_randr_crtc_clone_set(Ecore_X_Window root,
                             Ecore_X_Randr_Crtc original,
                             Ecore_X_Randr_Crtc clon)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   XRRScreenResources *res = NULL;
   XRRCrtcInfo *clone_crtc_info = NULL;
   Ecore_X_Randr_Mode original_mode = Ecore_X_Randr_None;
   Ecore_X_Randr_Orientation original_orientation = Ecore_X_Randr_None;
   Eina_Bool ret = EINA_FALSE;
   int x, y;

   if (_ecore_x_randr_root_validate(root) &&
       _ecore_x_randr_crtc_validate(root,
                                    original) &&
       _ecore_x_randr_crtc_validate(root,
                                    clon) &&
       (res =
          _ecore_x_randr_get_screen_resources (_ecore_x_disp,
                                               root)) &&
       (clone_crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, clon)))
     {
        ecore_x_randr_crtc_geometry_get(root, original, &x, &y, NULL, NULL);
        original_mode = ecore_x_randr_crtc_mode_get(root, original);
        original_orientation = ecore_x_randr_crtc_orientation_get(root,
                                                                  original);
        ret = ecore_x_randr_crtc_settings_set(root,
                                              clon,
                                              NULL,
                                              Ecore_X_Randr_Unset,
                                              x,
                                              y,
                                              original_mode,
                                              original_orientation);
        XRRFreeCrtcInfo(clone_crtc_info);
        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return EINA_FALSE;
#endif
}

/**
 * @brief Sets the demanded parameters for a given CRTC. Note that the CRTC is
 * auto enabled in it's preferred mode, when it was disabled before.
 *
 * @param root The root window which's default display will be queried.
 * @param crtc The CRTC which's configuration should be altered.
 * @param outputs An array of outputs, that should display this CRTC's content.
 * @param noutputs Number of outputs in the array of outputs. If set to
 * Ecore_X_Randr_Unset, current outputs and number of outputs will be used.
 * If set to Ecore_X_Randr_None, CRTC will be disabled.
 * @param x New x coordinate. If <0 (e.g. Ecore_X_Randr_Unset) the current x
 * corrdinate will be assumed.
 * @param y New y coordinate. If <0 (e.g. Ecore_X_Randr_Unset) the current y
 * corrdinate will be assumed.
 * @param mode The new mode to be set. If Ecore_X_Randr_None is passed, the
 * CRTC will be disabled. If Ecore_X_Randr_Unset is passed, the current mode is
 * assumed.
 * @param orientation The new orientation to be set. If Ecore_X_Randr_Unset is
 * used, the current mode is assumed.
 * @return @c EINA_TRUE if the configuration alteration was successful,
 * @c EINA_FALSE otherwise.
 */
EAPI Eina_Bool
ecore_x_randr_crtc_settings_set(Ecore_X_Window root,
                                Ecore_X_Randr_Crtc crtc,
                                Ecore_X_Randr_Output *outputs,
                                int noutputs,
                                int x,
                                int y,
                                Ecore_X_Randr_Mode mode,
                                Ecore_X_Randr_Orientation orientation)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);
   XRRScreenResources *res = NULL;
   XRRCrtcInfo *crtc_info = NULL;
   Eina_Bool ret = EINA_FALSE;

   if (_ecore_x_randr_crtc_validate(root,
                                    crtc) &&
       (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
     {
        if ((crtc_info = XRRGetCrtcInfo(_ecore_x_disp, res, crtc)))
          {
             if ((mode == Ecore_X_Randr_None) ||
                 (noutputs == Ecore_X_Randr_None))
               {
                  outputs = NULL;
                  noutputs = 0;
               }
             else if (noutputs == (int)Ecore_X_Randr_Unset)
               {
                  outputs = (Ecore_X_Randr_Output *)crtc_info->outputs;
                  noutputs = crtc_info->noutput;
               }

             if (mode == Ecore_X_Randr_Unset)
               mode = crtc_info->mode;

             if (x < 0)
               x = crtc_info->x;

             if (y < 0)
               y = crtc_info->y;

             if (orientation == Ecore_X_Randr_Unset)
               orientation = crtc_info->rotation;

             if (!XRRSetCrtcConfig(_ecore_x_disp, res, crtc, CurrentTime,
                                   x, y, mode, orientation, (RROutput *)outputs,
                                   noutputs))
               ret = EINA_TRUE;

             XRRFreeCrtcInfo(crtc_info);
          }

        XRRFreeScreenResources(res);
     }

   return ret;
#else
   return EINA_FALSE;
#endif
}

/**
 * @brief Sets a CRTC relative to another one.
 *
 * @param root The root window which's default display will be set.
 * @param crtc_r1 The CRTC to be positioned.
 * @param crtc_r2 The CRTC the position should be relative to.
 * @param policy The relation between the crtcs.
 * @param alignment In case CRTCs size differ, aligns CRTC1 accordingly at
 * CRTC2's borders.
 * @return @c EINA_TRUE if crtc could be successfully positioned, @c EINA_FALSE
 * if repositioning failed or if position of new crtc would be out of given
 * screen's min/max bounds.
 */
EAPI Eina_Bool
ecore_x_randr_crtc_pos_relative_set(Ecore_X_Window root,
                                    Ecore_X_Randr_Crtc crtc_r1,
                                    Ecore_X_Randr_Crtc crtc_r2,
                                    Ecore_X_Randr_Output_Policy policy,
                                    Ecore_X_Randr_Relative_Alignment alignment)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   Eina_Rectangle r1_geo, r2_geo;
   int w_max, h_max, cw, ch, x_n = Ecore_X_Randr_Unset, y_n =
     Ecore_X_Randr_Unset;
   /*
      int r1_noutputs, r2_noutputs, r1_nmodes, i, j, outputs_mode_found, mode_w, mode_h;
      Ecore_X_Randr_Output *r1_outputs, *r2_outputs, *r2_r1_outputs;
      Ecore_X_Randr_Mode *r1_modes, r2_mode, r1_mode;
      Eina_Bool ret;
    */

   if ((ecore_x_randr_crtc_mode_get(root, crtc_r1) == Ecore_X_Randr_None)
       || (ecore_x_randr_crtc_mode_get(root, crtc_r2) == Ecore_X_Randr_None))
     return EINA_FALSE;

   if (!_ecore_x_randr_crtc_validate(root, crtc_r1) ||
       (!(crtc_r1 != crtc_r2) &&
        !_ecore_x_randr_crtc_validate(root, crtc_r2)))
     return EINA_FALSE;

   ecore_x_randr_crtc_geometry_get(root,
                                   crtc_r1,
                                   &r1_geo.x,
                                   &r1_geo.y,
                                   &r1_geo.w,
                                   &r1_geo.h);
   ecore_x_randr_crtc_geometry_get(root,
                                   crtc_r2,
                                   &r2_geo.x,
                                   &r2_geo.y,
                                   &r2_geo.w,
                                   &r2_geo.h);
   ecore_x_randr_screen_size_range_get(root, NULL, NULL, &w_max, &h_max);
   ecore_x_randr_screen_current_size_get(root, &cw, &ch, NULL, NULL);

   switch (policy)
     {
      case ECORE_X_RANDR_OUTPUT_POLICY_RIGHT:
        //set r1 right of r2
        x_n = r2_geo.x + r2_geo.w;

        switch (alignment)
          {
           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_NONE:
             y_n = Ecore_X_Randr_Unset;
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_REL:
             y_n =
               ((int)(((double)r2_geo.h /
                       2.0) + (double)r2_geo.y - ((double)r1_geo.h / 2.0)));
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_SCR:
             y_n = ((int)((double)ch / 2.0) - ((double)r1_geo.h / 2.0));
             break;
          }
        break;

      case ECORE_X_RANDR_OUTPUT_POLICY_LEFT:
        //set r1 left of r2
        x_n = r2_geo.x - r1_geo.w;

        switch (alignment)
          {
           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_NONE:
             y_n = Ecore_X_Randr_Unset;
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_REL:
             y_n =
               ((int)(((double)r2_geo.h /
                       2.0) + r2_geo.y - ((double)r1_geo.h / 2.0)));
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_SCR:
             y_n = ((int)(((double)ch / 2.0) - ((double)r1_geo.h / 2.0)));
             break;
          }
        break;

      case ECORE_X_RANDR_OUTPUT_POLICY_BELOW:
        //set r1 below r2
        y_n = r2_geo.y + r2_geo.h;

        switch (alignment)
          {
           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_NONE:
             x_n = Ecore_X_Randr_Unset;
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_REL:
             x_n =
               ((int)((((double)r2_geo.x +
                        (double)r2_geo.w) / 2.0) - ((double)r1_geo.w / 2.0)));
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_SCR:
             x_n = ((int)((double)cw / 2.0));
             break;
          }
        break;

      case ECORE_X_RANDR_OUTPUT_POLICY_ABOVE:
        y_n = r2_geo.y - r1_geo.h;

        //set r1 above r2
        switch (alignment)
          {
           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_NONE:
             x_n = Ecore_X_Randr_Unset;
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_REL:
             x_n =
               ((int)((((double)r2_geo.x +
                        (double)r2_geo.w) / 2.0) - ((double)r1_geo.w / 2.0)));
             break;

           case ECORE_X_RANDR_RELATIVE_ALIGNMENT_CENTER_SCR:
             x_n = ((int)((double)cw / 2.0));
             break;
          }
        break;

      case ECORE_X_RANDR_OUTPUT_POLICY_CLONE:
        return ecore_x_randr_crtc_pos_set(root, crtc_r1, r2_geo.x, r2_geo.y);

      /* entire cloning (including modesetting)
         //all outputs of crtc1 capable of crtc2's current mode?
         r2_mode = ecore_x_randr_crtc_mode_get(root, crtc_r2);
         if (!(r1_outputs =
               ecore_x_randr_crtc_outputs_get(root, crtc_r1,
                                              &r1_noutputs)) ||
          (r1_noutputs == 0))
         return EINA_FALSE;

         for (i = 0, outputs_mode_found = 0; i < r1_noutputs; i++)
         {
           if (!(r1_modes =
                    ecore_x_randr_output_modes_get(root, r1_outputs[i],
                                                   &r1_nmodes, NULL)))
             {
                free(r1_outputs);
                return EINA_FALSE;
             }

           for (j = 0; j < r1_nmodes; j++)
             {
                ecore_x_randr_mode_size_get(root,
                                            r1_modes[j],
                                            &mode_w,
                                            &mode_h);
                if ((mode_w == r2_geo.w) && (mode_h == r2_geo.h))
                  {
                     r1_mode = r1_modes[j];
         ++outputs_mode_found;
                     free(r1_modes);
                     r1_modes = NULL;
                     break;
                  }
             }
           if (r1_modes)
                     free(r1_modes);

           if (outputs_mode_found <= i)
             {
                //an output doesn't support the set mode, cancel!
                     free(r1_outputs);
                return EINA_FALSE;
             }
         }
                     free (r1_outputs);
         //CRTC 1's outputs support a mode of same geometry as CRTC 2.
         ret =
         (ecore_x_randr_crtc_mode_set(root, crtc_r1, Ecore_X_Randr_None,
                                      Ecore_X_Randr_None,
                                      r1_mode) &&
          ecore_x_randr_crtc_pos_set(root, crtc_r1, r2_geo.x, r2_geo.y));
         return ret;
       */

      /* entire cloning on same CRTC
         //all outputs of crtc1 capable of crtc2's current mode?
         r2_mode = ecore_x_randr_crtc_mode_get(root, crtc_r2);
         if (!(r1_outputs =
               ecore_x_randr_crtc_outputs_get(root, crtc_r1,
                                              &r1_noutputs)) ||
          (r1_noutputs == 0))
         return EINA_FALSE;

         for (i = 0, outputs_mode_found = 0; i < r1_noutputs; i++)
         {
           if (!(r1_modes =
                    ecore_x_randr_output_modes_get(root, r1_outputs[i],
                                                   &r1_nmodes, NULL)))
             {
                     free(r1_outputs);
                return EINA_FALSE;
             }

           for (j = 0; j < r1_nmodes; j++)
             {
                if (r1_modes[j] == r2_mode)
                  {
         ++outputs_mode_found;
                     free(r1_modes);
                     r1_modes = NULL;
                     break;
                  }
             }
           if (r1_modes)
                     free(r1_modes);

           if (outputs_mode_found <= i)
             {
                //an output doesn't support the set mode, cancel!
                     free(r1_outputs);
                return EINA_FALSE;
             }
         }
         //check whether crtc r2 can use all outputs of r1.
         if (!(r2_outputs =
               ecore_x_randr_crtc_possible_outputs_get(root, crtc_r2,
                                                       &r2_noutputs)) ||
          (r2_noutputs == 0))
         {
                free(r1_outputs);
           return EINA_FALSE;
         }

         for (i = 0; i < r1_noutputs; i++)
         {
           for (j = 0; j < r2_noutputs; )
             {
                if (r1_outputs[i] == r2_outputs[j])
                   break;

                j++;
             }
           if (j == r2_noutputs)
             {
                //didn't find the output!
                free (r1_outputs);
                free (r2_outputs);
                return EINA_FALSE;
             }
         }

         //apparently crtc2 supports all outputs of r1
         //TODO: check with the compatible list of outputs (property in RR1.3)
         r2_r1_outputs =
         malloc(sizeof(Ecore_X_Randr_Output) * (r1_noutputs + r2_noutputs));
         for (i = 0; i < r1_noutputs; i++)
         {
           r2_r1_outputs[i] = r1_outputs[i];
         }
         free(r1_outputs);
         for (; i < r2_noutputs; i++)
         {
           r2_r1_outputs[i] = r2_outputs[i];
         }
         free(r2_outputs);
         ret =
         ecore_x_randr_crtc_mode_set(root, crtc_r2, r2_r1_outputs,
                                     (r1_noutputs + r1_noutputs), r2_mode);
         free (r2_r1_outputs);
         return ret;
       */
      case ECORE_X_RANDR_OUTPUT_POLICY_NONE:
        break;
      default:
        return EINA_FALSE;
     }
   if ((x_n == r1_geo.x) && (y_n == r1_geo.x))
     return EINA_TRUE;

   //out of possible bounds?
   if (((y_n + r1_geo.h) > h_max) || ((x_n + r1_geo.w) > w_max))
     return EINA_FALSE;

   return ecore_x_randr_crtc_pos_set(root, crtc_r1, x_n, y_n);
#else
   return EINA_FALSE;
#endif
}

/*
 * @brief Add given mode to given output.
 *
 * @param output The output the mode is added to.
 * @param mode The mode added to the output.
 * @return @c EINA_FALSE if output or mode equal Ecore_X_Randr_None, else
 * @c EINA_TRUE.
 * Additionally, if xcb backend is used, the success of the addition is
 * reported back directly.
 * @since 1.2.0
 */
EAPI Eina_Bool
ecore_x_randr_output_mode_add(Ecore_X_Randr_Output output,
                              Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);

   if ((output == Ecore_X_Randr_None) || (mode == Ecore_X_Randr_None))
     return EINA_FALSE;

   XRRAddOutputMode(_ecore_x_disp, output, mode);
   return EINA_TRUE;
#else
   return EINA_FALSE;
#endif
}

/*
 * @brief delete given mode from given output
 * @param output the output the mode is removed from
 * @param mode the mode removed from the output
 * @since 1.2.0
 */
EAPI void
ecore_x_randr_output_mode_del(Ecore_X_Randr_Output output,
                              Ecore_X_Randr_Mode mode)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();

   if ((output == Ecore_X_Randr_None) || (mode == Ecore_X_Randr_None))
     return;

   XRRDeleteOutputMode(_ecore_x_disp, output, mode);
#else
   return;
#endif
}

EAPI Ecore_X_Randr_Mode *
ecore_x_randr_output_modes_get(Ecore_X_Window root,
                               Ecore_X_Randr_Output output,
                               int *num,
                               int *npreferred)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;
   Ecore_X_Randr_Mode *modes = NULL;

   if ((output != Ecore_X_Randr_None)
       && (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root))
       && (output_info =
             XRRGetOutputInfo(_ecore_x_disp, res, (RROutput)output)))
     {
        if ((modes = malloc(sizeof(Ecore_X_Randr_Mode) * output_info->nmode)))
          {
             memcpy(modes, output_info->modes,
                    (sizeof(Ecore_X_Randr_Mode) * output_info->nmode));
             if (num)
               *num = output_info->nmode;

             if (npreferred)
               *npreferred = output_info->npreferred;
          }
     }

   if (output_info)
     XRRFreeOutputInfo(output_info);

   if (res)
     XRRFreeScreenResources(res);

   return modes;
#else
   return NULL;
#endif
}

EAPI Ecore_X_Randr_Crtc *
ecore_x_randr_output_possible_crtcs_get(Ecore_X_Window root,
                                        Ecore_X_Randr_Output output,
                                        int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;
   Ecore_X_Randr_Crtc *crtcs = NULL;

   if ((output != Ecore_X_Randr_None))
     {
        if ((res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
          {
             if ((output_info = XRRGetOutputInfo(_ecore_x_disp, res, output)))
               {
                  if ((crtcs = malloc(sizeof(Ecore_X_Randr_Crtc) * output_info->ncrtc)))
                    {
                       memcpy(crtcs, output_info->crtcs, (sizeof(Ecore_X_Randr_Crtc) * output_info->ncrtc));
                       if (num) *num = output_info->ncrtc;
                    }
                  XRRFreeOutputInfo(output_info);
               }
             XRRFreeScreenResources(res);
          }
     }
   return crtcs;
#else
   return Ecore_X_Randr_None;
#endif
}

/**
 * @brief gets the the outputs which might be used simultenously on the same
 * CRTC.
 * @param root window that this information should be queried for.
 * @param output the output which's clones we concern
 * @param num number of possible clones
 */
EAPI Ecore_X_Randr_Output *
ecore_x_randr_output_clones_get(Ecore_X_Window root,
                                Ecore_X_Randr_Output output,
                                int *num)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;
   Ecore_X_Randr_Output *outputs = NULL;

   if ((output != Ecore_X_Randr_None))
     {
        if ((res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
          {
             if ((output_info = XRRGetOutputInfo(_ecore_x_disp, res, output)))
               {
                  if ((outputs = malloc(sizeof(Ecore_X_Randr_Output) * output_info->nclone)))
                    {
                       memcpy(outputs, output_info->clones, (sizeof(Ecore_X_Randr_Output) * output_info->nclone));
                       if (num) *num = output_info->nclone;
                    }
                  XRRFreeOutputInfo(output_info);
               }
             XRRFreeScreenResources(res);
          }
     }
   return outputs;
#else
   return Ecore_X_Randr_None;
#endif
}

EAPI Ecore_X_Randr_Crtc
ecore_x_randr_output_crtc_get(Ecore_X_Window root,
                              Ecore_X_Randr_Output output)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(Ecore_X_Randr_None);
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;
   Ecore_X_Randr_Crtc ret = Ecore_X_Randr_None;

   if ((output != Ecore_X_Randr_None))
     {
        if ((res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
          {
             if ((output_info = XRRGetOutputInfo(_ecore_x_disp, res, output)))
               {
                  ret = output_info->crtc;
                  XRRFreeOutputInfo(output_info);
               }
             XRRFreeScreenResources(res);
          }
     }

   return ret;
#else
   return Ecore_X_Randr_None;
#endif
}

/**
 * @brief gets the given output's name as reported by X
 * @param root the window which's screen will be queried
 * @param output The output for which the name will be reported.
 * @param len length of returned c-string.
 * @return name of the output as reported by X
 */
EAPI char *
ecore_x_randr_output_name_get(Ecore_X_Window root,
                              Ecore_X_Randr_Output output,
                              int *len)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;
   char *ret = NULL;

   if ((output != Ecore_X_Randr_None)
       && (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root))
       && (output_info = XRRGetOutputInfo(_ecore_x_disp, res, output)))
     {
        /*
         * Actually the below command is correct, but due to a bug in libXrandr
         * it doesn't work. Therefore we stick with strlen().
         * Replace the line below with the following once this bug is
         * fixed within libXrandr.
         *
         *    *len = output_info->nameLen;
         *
         */
        if ((ret = strdup(output_info->name)) && len)
          *len = strlen(ret);

        XRRFreeOutputInfo(output_info);
     }

   if (res)
     XRRFreeScreenResources(res);

   return ret;
#else
   return NULL;
#endif
}

/**
 * @brief gets the width and hight of a given mode
 * @param mode the mode which's size is to be looked up
 * @param w width of given mode in px
 * @param h height of given mode in px
 */
EAPI void
ecore_x_randr_mode_size_get(Ecore_X_Window root,
                            Ecore_X_Randr_Mode mode,
                            int *w,
                            int *h)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   XRRScreenResources *res = NULL;
   int i;

   if ((mode != Ecore_X_Randr_None)
       && (w || h)
       && (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
     {
        for (i = 0; i < res->nmode; i++)
          {
             if (res->modes[i].id == mode)
               {
                  if (w)
                    *w = res->modes[i].width;

                  if (h)
                    *h = res->modes[i].height;

                  break;
               }
          }
     }

   if (res)
     XRRFreeScreenResources(res);

#endif
}

/**
 * @brief gets the EDID information of an attached output if available.
 * Note that this information is not to be compared using ordinary string
 * comparison functions, since it includes 0-bytes.
 * @param root window this information should be queried from
 * @param output the XID of the output
 * @param length length of the byte-array. If NULL, request will fail.
 */
EAPI unsigned char *
ecore_x_randr_output_edid_get(Ecore_X_Window root,
                              Ecore_X_Randr_Output output,
                              unsigned long *length)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(NULL);
   Atom name = XInternAtom (_ecore_x_disp, RANDR_PROPERTY_EDID, False);
   unsigned char *prop_data, *ret = NULL;
   int actual_format;
   unsigned long nitems, bytes_after;
   Atom actual_type;

   if (!length || !_ecore_x_randr_output_validate(root, output))
     return NULL;

   if (XRRGetOutputProperty (_ecore_x_disp, output, name,
                             0, 100, False, False,
                             AnyPropertyType,
                             &actual_type, &actual_format,
                             &nitems, &bytes_after, &prop_data) == Success)
     {
        if (actual_type == XA_INTEGER && actual_format == 8)
          {
             if ((ret = malloc(nitems * sizeof(unsigned char))))
               {
                  if (length &&
                      (memcpy(ret, prop_data, (nitems * sizeof(unsigned char)))))
                    *length = nitems;

                  return ret;
               }
          }
     }

   return NULL;
#else
   return NULL;
#endif
}

EAPI Ecore_X_Randr_Connection_Status
ecore_x_randr_output_connection_status_get(Ecore_X_Window root,
                                           Ecore_X_Randr_Output output)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(ECORE_X_RANDR_CONNECTION_STATUS_UNKNOWN);
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;
   Ecore_X_Randr_Connection_Status ret =
     ECORE_X_RANDR_CONNECTION_STATUS_UNKNOWN;

   if ((output != Ecore_X_Randr_None)
       && (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root))
       && (output_info = XRRGetOutputInfo(_ecore_x_disp, res, output)))
     {
        ret = output_info->connection;
     }

   if (output_info)
     XRRFreeOutputInfo(output_info);

   if (res)
     XRRFreeScreenResources(res);

   return ret;
#else
   return ECORE_X_RANDR_CONNECTION_STATUS_UNKNOWN;
#endif
}

EAPI void
ecore_x_randr_output_size_mm_get(Ecore_X_Window root,
                                 Ecore_X_Randr_Output output,
                                 int *w_mm,
                                 int *h_mm)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   XRRScreenResources *res = NULL;
   XRROutputInfo *output_info = NULL;

   if ((output != Ecore_X_Randr_None)
       && (res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
     {
        if ((output_info =
               XRRGetOutputInfo(_ecore_x_disp, res, (RROutput)output)))
          {
             if (w_mm)
               *w_mm = output_info->mm_width;

             if (h_mm)
               *h_mm = output_info->mm_height;

             XRRFreeOutputInfo(output_info);
          }

        XRRFreeScreenResources(res);
     }

#endif
}

EAPI Eina_Bool
ecore_x_randr_move_all_crtcs_but(Ecore_X_Window root,
                                 const Ecore_X_Randr_Crtc *not_moved,
                                 int nnot_moved,
                                 int dx,
                                 int dy)
{
#ifdef ECORE_XRANDR
   Ecore_X_Randr_Crtc *crtcs_to_be_moved = NULL;
   XRRScreenResources *res = NULL;
   int i, j, k, n;
   Eina_Bool ret;

   if ((nnot_moved <= 0) || (!not_moved)
       || !_ecore_x_randr_root_validate(root)
       || !(res =
              _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     return EINA_FALSE;

   n = (res->ncrtc - nnot_moved);
   if ((crtcs_to_be_moved = malloc(sizeof(Ecore_X_Randr_Crtc) * n)))
     {
        for (i = 0, k = 0; (i < res->ncrtc) && (k < n); i++)
          {
             for (j = 0; j < nnot_moved; j++)
               {
                  if (res->crtcs[i] == not_moved[j])
                    break;
               }
             if (j == nnot_moved)
               //crtcs[i] is not in the 'not to move'-list
               crtcs_to_be_moved[k++] = res->crtcs[i];
          }
     }

   XRRFreeScreenResources(res);
   ret = ecore_x_randr_move_crtcs(root, crtcs_to_be_moved, n, dx, dy);
   free(crtcs_to_be_moved);
   return ret;
#else
   return EINA_FALSE;
#endif
}

/*
 * @brief Move given CRTCs belonging to the given root window's screen dx/dy
 * pixels relative to their current position. The screen size will be
 * automatically adjusted if necessary and possible.
 *
 * @param root Window which's screen's resources are used.
 * @param crtcs List of CRTCs to be moved.
 * @param ncrtc Number of CRTCs in array.
 * @param dx Amount of pixels the CRTCs should be moved in x direction.
 * @param dy Amount of pixels the CRTCs should be moved in y direction.
 * @return @c EINA_TRUE if all crtcs could be moved successfully.
 */
EAPI Eina_Bool
ecore_x_randr_move_crtcs(Ecore_X_Window root,
                         const Ecore_X_Randr_Crtc *crtcs,
                         int ncrtc,
                         int dx,
                         int dy)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);
   XRRScreenResources *res = NULL;
   XRRCrtcInfo **crtc_info = NULL;
   Eina_Bool ret = EINA_TRUE;
   int i, cw, ch, w_max, h_max, nw, nh;

   crtc_info = alloca(sizeof(XRRCrtcInfo *) * ncrtc);
   memset(crtc_info, 0, sizeof(XRRCrtcInfo *) * ncrtc);
   if (_ecore_x_randr_root_validate(root)
       && (res = _ecore_x_randr_get_screen_resources (_ecore_x_disp, root)))
     {
        ecore_x_randr_screen_size_range_get(root, NULL, NULL, &w_max, &h_max);
        ecore_x_randr_screen_current_size_get(root, &cw, &ch, NULL, NULL);
        nw = cw;
        nh = ch;

        for (i = 0;
             (i < ncrtc) &&
             (crtc_info[i] = XRRGetCrtcInfo(_ecore_x_disp, res, crtcs[i]));
             i++)
          {
             if (((crtc_info[i]->x + dx) < 0) ||
                 ((int)(crtc_info[i]->x + crtc_info[i]->width + dx) > w_max)
                 || ((crtc_info[i]->y + dy) < 0) ||
                 ((int)(crtc_info[i]->y + crtc_info[i]->height + dy) > h_max)
                 )
               goto _ecore_x_randr_move_crtcs_fail_free_crtc_info;

             nw = MAX((int)(crtc_info[i]->x + crtc_info[i]->width + dx), nw);
             nh = MAX((int)(crtc_info[i]->y + crtc_info[i]->height + dy), nh);
          }
        //not out of bounds

        //resize if necessary
        if (!(((nw > cw) ||
               (nh > ch)) ||
              ecore_x_randr_screen_current_size_set(root, nw, nh,
                                                    Ecore_X_Randr_Unset,
                                                    Ecore_X_Randr_Unset)))
          goto _ecore_x_randr_move_crtcs_fail_free_crtc_info;

        //actually move all the crtcs, keep their rotation and mode.
        for (i = 0; (i < ncrtc) && crtc_info[i]; i++)
          {
             if ((crtc_info[i]) &&
                 (!ecore_x_randr_crtc_settings_set(root, crtcs[i], NULL,
                                                   Ecore_X_Randr_Unset,
                                                   (crtc_info[i]->x + dx),
                                                   (crtc_info[i]->y + dy),
                                                   crtc_info[i]->mode,
                                                   crtc_info[i]->rotation)))
               {
                  ret = EINA_FALSE;
                  break;
               }
          }
        if (i < ncrtc)
          {
             //something went wrong, let's try to move the already moved crtcs
             //back.
             while ((i--) >= 0)
               {
                  if (crtc_info[i])
                    ecore_x_randr_crtc_settings_set(root,
                                                    crtcs[i],
                                                    NULL,
                                                    Ecore_X_Randr_Unset,
                                                    (crtc_info[i]->x - dx),
                                                    (crtc_info[i]->y - dy),
                                                    crtc_info[i]->mode,
                                                    crtc_info[i]->rotation);
               }
          }

        for (i = 0; i < ncrtc; i++)
          {
             if (crtc_info[i]) XRRFreeCrtcInfo(crtc_info[i]);
          }
     }

   XRRFreeScreenResources(res);

   return ret;
_ecore_x_randr_move_crtcs_fail_free_crtc_info:
   while (i-- > 0)
     XRRFreeCrtcInfo(crtc_info[i]);
   XRRFreeScreenResources(res);
   return EINA_FALSE;
#else
   return EINA_FALSE;
#endif
}

/**
 * @brief removes unused screen space. The most upper left CRTC is set to 0x0
 * and all other CRTCs dx,dy respectively.
 * @param root the window's screen which will be reset.
 */
EAPI void
ecore_x_randr_screen_reset(Ecore_X_Window root)
{
#ifdef ECORE_XRANDR
   XRRCrtcInfo *crtc_info = NULL;
   XRRScreenResources *res = NULL;
   //the 100000 are just a random huge number.
   int i, dx_min = 100000, dy_min = 100000, w_n = 0, h_n = 0, nenabled_crtcs = 0;

   if (!_ecore_x_randr_root_validate(root) ||
       !(res = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root)))
     return;

   Ecore_X_Randr_Crtc enabled_crtcs[res->ncrtc];

   for (i = 0; i < res->ncrtc; i++)
     {
        if (!(crtc_info =
                XRRGetCrtcInfo(_ecore_x_disp, res,
                               res->crtcs[i])) ||
            (crtc_info->mode == Ecore_X_Randr_None) ||
            (crtc_info->mode == Ecore_X_Randr_Unset)
            || ((crtc_info->noutput == 0)))
          continue;

        enabled_crtcs[nenabled_crtcs++] = res->crtcs[i];

        if ((int)(crtc_info->x + crtc_info->width) > w_n)
          w_n = (crtc_info->x + crtc_info->width);

        if ((int)(crtc_info->y + crtc_info->height) > h_n)
          h_n = (crtc_info->y + crtc_info->height);

        if (crtc_info->x < dx_min)
          dx_min = crtc_info->x;
        if (crtc_info->y < dy_min)
          dy_min = crtc_info->y;

        XRRFreeCrtcInfo(crtc_info);
     }
   if ((dx_min > 0) || (dy_min > 0))
     {
        if (ecore_x_randr_move_crtcs(root, enabled_crtcs, nenabled_crtcs, -dx_min, -dy_min))
          {
             w_n -= dx_min;
             h_n -= dy_min;
          }
     }
   ecore_x_randr_screen_current_size_set(root,
                                         w_n,
                                         h_n,
                                         Ecore_X_Randr_Unset,
                                         Ecore_X_Randr_Unset);
#endif
}

/**
 * @brief Set up the backlight level to the given level.
 *
 * @param root The window's screen which will be set.
 * @param level Of the backlight between @c 0 and @c 1.
 */

EAPI void
ecore_x_randr_screen_backlight_level_set(Ecore_X_Window root,
                                         double level)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET();
   Atom _backlight;
   XRRScreenResources *resources = NULL;
   Ecore_X_Randr_Output output;
   int o;

   if ((level < 0) || (level > 1))
     {
        ERR("Wrong value for the backlight level. It should be between 0 and 1.");
        return;
     }

   /*
    * To make sure that the _backlight atomic property still exists.
    */
   _backlight = XInternAtom(_ecore_x_disp, RANDR_PROPERTY_BACKLIGHT, True);
   if (_backlight == None)
     {
        WRN("Backlight setting is not supported on this server or driver");
        return;
     }

   /* get the ressources */
   resources = _ecore_x_randr_get_screen_resources(_ecore_x_disp, root);
   if (!resources) return;

   for (o = 0; o < resources->noutput; o++)
     {
        output = resources->outputs[o];
        if (ecore_x_randr_output_backlight_level_get(root, output) >= 0)
          {
             ecore_x_randr_output_backlight_level_set(root, output, level);
          }
     }
   XRRFreeScreenResources(resources);
#endif
}

/*
 * @brief Check if a backlight is available.
 * @return Whether a backlight is available.
 */

EAPI Eina_Bool
ecore_x_randr_output_backlight_available(void)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(-1);
   Atom _backlight;

   _backlight = XInternAtom(_ecore_x_disp, RANDR_PROPERTY_BACKLIGHT, True);

   return (_backlight == None) ? EINA_FALSE : EINA_TRUE;

#endif
   return EINA_FALSE;
}

/*
 * @brief Get the backlight level of the given output.
 *
 * @param root Window which's screen should be queried.
 * @param output From which the backlight level should be retrieved.
 * @return The backlight level.
 */

EAPI double
ecore_x_randr_output_backlight_level_get(Ecore_X_Window root,
                                         Ecore_X_Randr_Output output)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(-1);
   Atom actual_type;
   Atom _backlight;
   XRRPropertyInfo *info = NULL;
   double dvalue;
   int actual_format;
   long value, max, min;
   unsigned long nitems;
   unsigned long bytes_after;
   unsigned char *prop = NULL;

   /* set backlight variable if not already done */

   _backlight = XInternAtom(_ecore_x_disp, RANDR_PROPERTY_BACKLIGHT, True);
   if (_backlight == None)
     {
        ERR("Backlight property is not suppported on this server or driver");
        return -1;
     }

   if (!_ecore_x_randr_output_validate(root, output))
     {
        ERR("Invalid output");
        return -1;
     }

   if (XRRGetOutputProperty(_ecore_x_disp, output, _backlight,
                            0, 4, False, False, None,
                            &actual_type, &actual_format,
                            &nitems, &bytes_after, &prop) != Success)
     {
        WRN("Backlight not supported on this output");
        return -1;
     }

   if ((actual_type != XA_INTEGER) || (nitems != 1) || (actual_format != 32)) return -1;

   value = *((long *)prop);
   free (prop);

   /* I have the current value of the backlight */
   /* Now retrieve the min and max intensities of the output */
   info = XRRQueryOutputProperty(_ecore_x_disp, output, _backlight);
   if (info)
     {
        dvalue = -1;
        if ((info->range) && (info->num_values == 2))
          {
             /* finally convert the current value in the interval [0..1] */
             min = info->values[0];
             max = info->values[1];
             dvalue = ((double)(value - min)) / ((double)(max - min));
          }
        free(info);
        return dvalue;
     }
#endif
   return -1;
}

/*
 * @brief Set the backlight level of a given output.
 *
 * @param root Window which's screen should be queried.
 * @param output That should be set.
 * @param level For which the backlight should be set.
 * @return @c EINA_TRUE in case of success.
 */

EAPI Eina_Bool
ecore_x_randr_output_backlight_level_set(Ecore_X_Window root,
                                         Ecore_X_Randr_Output output,
                                         double level)
{
#ifdef ECORE_XRANDR
   RANDR_CHECK_1_2_RET(EINA_FALSE);
   Atom _backlight;
   XRRPropertyInfo *info = NULL;
   double min, max, tmp;
   long new;

   if ((level < 0) || (level > 1))
     {
        ERR("Backlight level should be between 0 and 1");
        return EINA_FALSE;
     }

   if (!_ecore_x_randr_output_validate(root, output))
     {
        ERR("Wrong output value");
        return EINA_FALSE;
     }

   _backlight = XInternAtom(_ecore_x_disp, RANDR_PROPERTY_BACKLIGHT, True);
   if (_backlight == None)
     {
        WRN("Backlight property is not suppported on this server or driver");
        return EINA_FALSE;
     }

   info = XRRQueryOutputProperty(_ecore_x_disp, output, _backlight);
   if (info)
     {
        if ((info->range) && (info->num_values == 2))
          {
             min = info->values[0];
             max = info->values[1];
             tmp = (level * (max - min)) + min;
             new = tmp;
             if (new > max) new = max;
             if (new < min) new = min;
             XRRChangeOutputProperty(_ecore_x_disp, output, _backlight, XA_INTEGER, 32,
                                     PropModeReplace, (unsigned char *)&new, 1);
             XFlush(_ecore_x_disp);
          }
        free(info);
        return EINA_TRUE;
     }
#endif
   return EINA_FALSE;
}

/*
 * @brief Get the outputs, which display a certain window.
 *
 * @param window Window the displaying outputs shall be found for
 * @param num The number of outputs displaying the window
 * @return Array of outputs that display a certain window. @c NULL if no
 * outputs was found that displays the specified window.
 */

EAPI Ecore_X_Randr_Output *
ecore_x_randr_window_outputs_get(Ecore_X_Window window,
                                 int *num)
{
#ifdef ECORE_XRANDR
   Ecore_X_Window root;
   Ecore_X_Randr_Crtc *crtcs;
   Ecore_X_Randr_Output *outputs, *ret = NULL, *tret;
   int ncrtcs, noutputs, i, nret = 0;

   if (_randr_version < RANDR_1_2) goto _ecore_x_randr_current_output_get_fail;

   root = ecore_x_window_root_get(window);
   if (!(crtcs = ecore_x_randr_window_crtcs_get(window, &ncrtcs)))
     goto _ecore_x_randr_current_output_get_fail;
   
   for (i = 0, nret = 0; i < ncrtcs; i++)
     {

        outputs = ecore_x_randr_crtc_outputs_get(root, crtcs[i],
                                                 &noutputs);
        if (!outputs)
          goto _ecore_x_randr_current_output_get_fail_free;
        tret = realloc(ret, ((nret + noutputs) * sizeof(Ecore_X_Randr_Output)));
        if (!tret) goto _ecore_x_randr_current_output_get_fail_free;
        ret = tret;
        memcpy(&ret[nret], outputs, (noutputs * sizeof(Ecore_X_Randr_Output)));
        nret += noutputs;
        free(outputs);
        outputs = NULL;
     }
   free(crtcs);

   if (num)
     *num = nret;

   return ret;

_ecore_x_randr_current_output_get_fail_free:
   free(outputs);
   free(crtcs);
   free(ret);
_ecore_x_randr_current_output_get_fail:
#endif
   if (num) *num = 0;
   return NULL;
}

/*
 * @deprecated bad naming. Use ecore_x_randr_window_outputs_get instead.
 * @brief Get the outputs, which display a certain window.
 *
 * @param window Window the displaying outputs shall be found for.
 * @param num The number of outputs displaying the window.
 * @return Array of outputs that display a certain window. @c NULL if no
 * outputs was found that displays the specified window.
 */

EAPI Ecore_X_Randr_Output *
ecore_x_randr_current_output_get(Ecore_X_Window window,
                                 int *num)
{
   return ecore_x_randr_window_outputs_get(window, num);
}