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

#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

#include "Ecore.h"
#include "ecore_x_private.h"
#include "Ecore_X.h"
#include "Ecore_X_Atoms.h"

static int ignore_num = 0;
static Ecore_X_Window *ignore_list = NULL;

/**
 * @defgroup Ecore_X_Window_Create_Group X Window Creation Functions
 *
 * Functions that can be used to create an X window.
 */

/**
 * Creates a new window.
 * @param   parent The parent window to use.  If @p parent is @c 0, the root
 *                 window of the default display is used.
 * @param   x      X position.
 * @param   y      Y position.
 * @param   w      Width.
 * @param   h      Height.
 * @return  The new window handle.
 * @ingroup Ecore_X_Window_Create_Group
 */
EAPI Ecore_X_Window
ecore_x_window_new(Ecore_X_Window parent, int x, int y, int w, int h)
{
   Window win;
   XSetWindowAttributes attr;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (parent == 0)
      parent = DefaultRootWindow(_ecore_x_disp);

   attr.backing_store = NotUseful;
   attr.override_redirect = False;
   attr.border_pixel = 0;
   attr.background_pixmap = None;
   attr.bit_gravity = NorthWestGravity;
   attr.win_gravity = NorthWestGravity;
   attr.save_under = False;
   attr.do_not_propagate_mask = NoEventMask;
   attr.event_mask = KeyPressMask |
      KeyReleaseMask |
      ButtonPressMask |
      ButtonReleaseMask |
      EnterWindowMask |
      LeaveWindowMask |
      PointerMotionMask |
      ExposureMask |
      VisibilityChangeMask |
      StructureNotifyMask |
      FocusChangeMask |
      PropertyChangeMask |
      ColormapChangeMask;
   win = XCreateWindow(_ecore_x_disp, parent,
                       x, y, w, h, 0,
                       CopyFromParent, /*DefaultDepth(_ecore_x_disp, DefaultScreen(_ecore_x_disp)),*/
                       InputOutput,
                       CopyFromParent, /*DefaultVisual(_ecore_x_disp, DefaultScreen(_ecore_x_disp)),*/
                       CWBackingStore |
                       CWOverrideRedirect |
/*		       CWColormap | */
                       CWBorderPixel |
                       CWBackPixmap |
                       CWSaveUnder |
                       CWDontPropagate |
                       CWEventMask |
                       CWBitGravity |
                       CWWinGravity,
                       &attr);

   if (parent == DefaultRootWindow(_ecore_x_disp))
      ecore_x_window_defaults_set(win);

   return win;
} /* ecore_x_window_new */

/**
 * Creates a window with the override redirect attribute set to @c True.
 * @param   parent The parent window to use.  If @p parent is @c 0, the root
 *                 window of the default display is used.
 * @param   x      X position.
 * @param   y      Y position.
 * @param   w      Width.
 * @param   h      Height.
 * @return  The new window handle.
 * @ingroup Ecore_X_Window_Create_Group
 */
EAPI Ecore_X_Window
ecore_x_window_override_new(Ecore_X_Window parent, int x, int y, int w, int h)
{
   Window win;
   XSetWindowAttributes attr;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (parent == 0)
      parent = DefaultRootWindow(_ecore_x_disp);

   attr.backing_store = NotUseful;
   attr.override_redirect = True;
   attr.border_pixel = 0;
   attr.background_pixmap = None;
   attr.bit_gravity = NorthWestGravity;
   attr.win_gravity = NorthWestGravity;
   attr.save_under = False;
   attr.do_not_propagate_mask = NoEventMask;
   attr.event_mask = KeyPressMask |
      KeyReleaseMask |
      ButtonPressMask |
      ButtonReleaseMask |
      EnterWindowMask |
      LeaveWindowMask |
      PointerMotionMask |
      ExposureMask |
      VisibilityChangeMask |
      StructureNotifyMask |
      FocusChangeMask |
      PropertyChangeMask |
      ColormapChangeMask;
   win = XCreateWindow(_ecore_x_disp, parent,
                       x, y, w, h, 0,
                       CopyFromParent, /*DefaultDepth(_ecore_x_disp, DefaultScreen(_ecore_x_disp)),*/
                       InputOutput,
                       CopyFromParent, /*DefaultVisual(_ecore_x_disp, DefaultScreen(_ecore_x_disp)),*/
                       CWBackingStore |
                       CWOverrideRedirect |
/*		       CWColormap | */
                       CWBorderPixel |
                       CWBackPixmap |
                       CWSaveUnder |
                       CWDontPropagate |
                       CWEventMask |
                       CWBitGravity |
                       CWWinGravity,
                       &attr);
   return win;
} /* ecore_x_window_override_new */

/**
 * Creates a new input window.
 * @param   parent The parent window to use.    If @p parent is @c 0, the root
 *                 window of the default display is used.
 * @param   x      X position.
 * @param   y      Y position.
 * @param   w      Width.
 * @param   h      Height.
 * @return  The new window.
 * @ingroup Ecore_X_Window_Create_Group
 */
EAPI Ecore_X_Window
ecore_x_window_input_new(Ecore_X_Window parent, int x, int y, int w, int h)
{
   Window win;
   XSetWindowAttributes attr;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (parent == 0)
      parent = DefaultRootWindow(_ecore_x_disp);

   attr.override_redirect = True;
   attr.do_not_propagate_mask = NoEventMask;
   attr.event_mask = KeyPressMask |
      KeyReleaseMask |
      ButtonPressMask |
      ButtonReleaseMask |
      EnterWindowMask |
      LeaveWindowMask |
      PointerMotionMask |
      ExposureMask |
      VisibilityChangeMask |
      StructureNotifyMask |
      FocusChangeMask |
      PropertyChangeMask |
      ColormapChangeMask;
   win = XCreateWindow(_ecore_x_disp, parent,
                       x, y, w, h, 0,
                       CopyFromParent,
                       InputOnly,
                       CopyFromParent, /*DefaultVisual(_ecore_x_disp, DefaultScreen(_ecore_x_disp)),*/
                       CWOverrideRedirect |
                       CWDontPropagate |
                       CWEventMask,
                       &attr);

   if (parent == DefaultRootWindow(_ecore_x_disp))
     {
     }

   return win;
} /* ecore_x_window_input_new */

/**
 * @defgroup Ecore_X_Window_Properties_Group X Window Property Functions
 *
 * Functions that set window properties.
 */

/**
 * Sets the default properties for the given window.
 *
 * The default properties set for the window are @c WM_CLIENT_MACHINE and
 * @c _NET_WM_PID.
 *
 * @param   win The given window.
 * @ingroup Ecore_X_Window_Properties_Groups
 */
EAPI void
ecore_x_window_defaults_set(Ecore_X_Window win)
{
   long pid;
   char buf[MAXHOSTNAMELEN];
   char *hostname[1];
   int argc;
   char **argv;
   XTextProperty xprop;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   /*
    * Set WM_CLIENT_MACHINE.
    */
   gethostname(buf, MAXHOSTNAMELEN);
   buf[MAXHOSTNAMELEN - 1] = '\0';
   hostname[0] = buf;
   /* The ecore function uses UTF8 which Xlib may not like (especially
    * with older clients) */
   /* ecore_x_window_prop_string_set(win, ECORE_X_ATOM_WM_CLIENT_MACHINE,
                                  (char *)buf); */
   if (XStringListToTextProperty(hostname, 1, &xprop))
     {
        XSetWMClientMachine(_ecore_x_disp, win, &xprop);
        XFree(xprop.value);
     }

   /*
    * Set _NET_WM_PID
    */
   pid = getpid();
   ecore_x_netwm_pid_set(win, pid);

   ecore_x_netwm_window_type_set(win, ECORE_X_WINDOW_TYPE_NORMAL);

   ecore_app_args_get(&argc, &argv);
   ecore_x_icccm_command_set(win, argc, argv);
} /* ecore_x_window_defaults_set */

EAPI void
ecore_x_window_configure(Ecore_X_Window win,
                         Ecore_X_Window_Configure_Mask mask,
                         int x, int y, int w, int h,
                         int border_width, Ecore_X_Window sibling,
                         int stack_mode)
{
   XWindowChanges xwc;

   if (!win)
      return;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);

   xwc.x = x;
   xwc.y = y;
   xwc.width = w;
   xwc.height = h;
   xwc.border_width = border_width;
   xwc.sibling = sibling;
   xwc.stack_mode = stack_mode;

   XConfigureWindow(_ecore_x_disp, win, mask, &xwc);
} /* ecore_x_window_configure */

/**
 * @defgroup Ecore_X_Window_Destroy_Group X Window Destroy Functions
 *
 * Functions to destroy X windows.
 */

/**
 * Deletes the given window.
 * @param   win The given window.
 * @ingroup Ecore_X_Window_Destroy_Group
 */
EAPI void
ecore_x_window_free(Ecore_X_Window win)
{
   /* sorry sir, deleting the root window doesn't sound like
    * a smart idea.
    */
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (win)
      XDestroyWindow(_ecore_x_disp, win);
} /* ecore_x_window_free */

/**
 * Set if a window should be ignored.
 * @param   win The given window.
 * @param   ignore if to ignore
 */
EAPI void
ecore_x_window_ignore_set(Ecore_X_Window win, int ignore)
{
   int i, j, cnt;
   Ecore_X_Window *t;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (ignore)
     {
        if (ignore_list)
          {
             for (i = 0; i < ignore_num; i++)
               {
                  if (win == ignore_list[i])
                     return;
               }
             t = realloc(ignore_list, (ignore_num + 1) * sizeof(Ecore_X_Window));
             if (!t) return;
             ignore_list = t;
             ignore_list[ignore_num++] = win;
          }
        else
          {
             ignore_num = 0;
             ignore_list = malloc(sizeof(Ecore_X_Window));
             if (ignore_list)
                ignore_list[ignore_num++] = win;
          }
     }
   else
     {
        if (!ignore_list)
           return;

        for (cnt = ignore_num, i = 0, j = 0; i < cnt; i++)
          {
             if (win != ignore_list[i])
	       ignore_list[j++] = ignore_list[i];
             else
	       ignore_num--;
          }

        if (ignore_num <= 0)
          {
             free(ignore_list);
             ignore_list = NULL;
             return;
          }
        t = realloc(ignore_list, ignore_num * sizeof(Ecore_X_Window));
        if (t) ignore_list = t;
     }
} /* ecore_x_window_ignore_set */

/**
 * Get the ignore list
 * @param   num number of windows in the list
 * @return  list of windows to ignore
 */
EAPI Ecore_X_Window *
ecore_x_window_ignore_list(int *num)
{
   if (num)
      *num = ignore_num;

   return ignore_list;
} /* ecore_x_window_ignore_list */

/**
 * Sends a delete request to the given window.
 * @param   win The given window.
 * @ingroup Ecore_X_Window_Destroy_Group
 */
EAPI void
ecore_x_window_delete_request_send(Ecore_X_Window win)
{
   XEvent xev;

   /* sorry sir, deleting the root window doesn't sound like
    * a smart idea.
    */
   if (!win)
      return;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   xev.xclient.type = ClientMessage;
   xev.xclient.display = _ecore_x_disp;
   xev.xclient.window = win;
   xev.xclient.message_type = ECORE_X_ATOM_WM_PROTOCOLS;
   xev.xclient.format = 32;
   xev.xclient.data.l[0] = ECORE_X_ATOM_WM_DELETE_WINDOW;
   xev.xclient.data.l[1] = CurrentTime;

   XSendEvent(_ecore_x_disp, win, False, NoEventMask, &xev);
} /* ecore_x_window_delete_request_send */

/**
 * @defgroup Ecore_X_Window_Visibility_Group X Window Visibility Functions
 *
 * Functions to access and change the visibility of X windows.
 */

/**
 * Shows a window.
 *
 * Synonymous to "mapping" a window in X Window System terminology.
 *
 * @param   win The window to show.
 * @ingroup Ecore_X_Window_Visibility
 */
EAPI void
ecore_x_window_show(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XMapWindow(_ecore_x_disp, win);
} /* ecore_x_window_show */

/**
 * Hides a window.
 *
 * Synonymous to "unmapping" a window in X Window System terminology.
 *
 * @param   win The window to hide.
 * @ingroup Ecore_X_Window_Visibility
 */
EAPI void
ecore_x_window_hide(Ecore_X_Window win)
{
   XEvent xev;
   Window root;
   int idum;
   unsigned int uidum;

   /* ICCCM: SEND unmap event... */
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   root = win;
   if (ScreenCount(_ecore_x_disp) == 1)
      root = DefaultRootWindow(_ecore_x_disp);
   else
      XGetGeometry(_ecore_x_disp,
                   win,
                   &root,
                   &idum,
                   &idum,
                   &uidum,
                   &uidum,
                   &uidum,
                   &uidum);

   xev.xunmap.type = UnmapNotify;
   xev.xunmap.serial = 0;
   xev.xunmap.send_event = True;
   xev.xunmap.display = _ecore_x_disp;
   xev.xunmap.event = root;
   xev.xunmap.window = win;
   xev.xunmap.from_configure = False;
   XSendEvent(_ecore_x_disp, xev.xunmap.event, False,
              SubstructureRedirectMask | SubstructureNotifyMask, &xev);
   XUnmapWindow(_ecore_x_disp, win);
} /* ecore_x_window_hide */

/**
 * @defgroup Ecore_X_Window_Geometry_Group X Window Geometry Functions
 *
 * Functions that change or retrieve the geometry of X windows.
 */

/**
 * Moves a window to the position @p x, @p y.
 *
 * The position is relative to the upper left hand corner of the
 * parent window.
 *
 * @param   win The window to move.
 * @param   x   X position.
 * @param   y   Y position.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_move(Ecore_X_Window win, int x, int y)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XMoveWindow(_ecore_x_disp, win, x, y);
} /* ecore_x_window_move */

/**
 * Resizes a window.
 * @param   win The window to resize.
 * @param   w   New width of the window.
 * @param   h   New height of the window.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_resize(Ecore_X_Window win, int w, int h)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (w < 1)
      w = 1;

   if (h < 1)
      h = 1;

   XResizeWindow(_ecore_x_disp, win, w, h);
} /* ecore_x_window_resize */

/**
 * Moves and resizes a window.
 * @param   win The window to move and resize.
 * @param   x   New X position of the window.
 * @param   y   New Y position of the window.
 * @param   w   New width of the window.
 * @param   h   New height of the window.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_move_resize(Ecore_X_Window win, int x, int y, int w, int h)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (w < 1)
      w = 1;

   if (h < 1)
      h = 1;

   XMoveResizeWindow(_ecore_x_disp, win, x, y, w, h);
} /* ecore_x_window_move_resize */

/**
 * @defgroup Ecore_X_Window_Focus_Functions X Window Focus Functions
 *
 * Functions that give the focus to an X Window.
 */

/**
 * Sets the focus to the window @p win.
 * @param   win The window to focus.
 * @ingroup Ecore_X_Window_Focus_Functions
 */
EAPI void
ecore_x_window_focus(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (win == 0)
      win = DefaultRootWindow(_ecore_x_disp);  //   XSetInputFocus(_ecore_x_disp, win, RevertToNone, CurrentTime);

//   XSetInputFocus(_ecore_x_disp, win, RevertToPointerRoot, CurrentTime);
   XSetInputFocus(_ecore_x_disp, win, RevertToParent, CurrentTime);
} /* ecore_x_window_focus */

/**
 * Sets the focus to the given window at a specific time.
 * @param   win The window to focus.
 * @param   t   When to set the focus to the window.
 * @ingroup Ecore_X_Window_Focus_Functions
 */
EAPI void
ecore_x_window_focus_at_time(Ecore_X_Window win, Ecore_X_Time t)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (win == 0)
      win = DefaultRootWindow(_ecore_x_disp);  //   XSetInputFocus(_ecore_x_disp, win, RevertToNone, t);

//   XSetInputFocus(_ecore_x_disp, win, PointerRoot, t);
   XSetInputFocus(_ecore_x_disp, win, RevertToParent, t);
} /* ecore_x_window_focus_at_time */

/**
 * gets the focus to the window @p win.
 * @return  The window that has focus.
 * @ingroup Ecore_X_Window_Focus_Functions
 */
EAPI Ecore_X_Window
ecore_x_window_focus_get(void)
{
   Window win;
   int revert_mode;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   win = 0;
   XGetInputFocus(_ecore_x_disp, &win, &revert_mode);
   return win;
} /* ecore_x_window_focus_get */

/**
 * @defgroup Ecore_X_Window_Z_Order_Group X Window Z Order Functions
 *
 * Functions that change the Z order of X windows.
 */

/**
 * Raises the given window.
 * @param   win The window to raise.
 * @ingroup Ecore_X_Window_Z_Order_Group
 */
EAPI void
ecore_x_window_raise(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XRaiseWindow(_ecore_x_disp, win);
} /* ecore_x_window_raise */

/**
 * Lowers the given window.
 * @param   win The window to lower.
 * @ingroup Ecore_X_Window_Z_Order_Group
 */
EAPI void
ecore_x_window_lower(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XLowerWindow(_ecore_x_disp, win);
} /* ecore_x_window_lower */

/**
 * @defgroup Ecore_X_Window_Parent_Group X Window Parent Functions
 *
 * Functions that retrieve or changes the parent window of a window.
 */

/**
 * Moves a window to within another window at a given position.
 * @param   win        The window to reparent.
 * @param   new_parent The new parent window.
 * @param   x          X position within new parent window.
 * @param   y          Y position within new parent window.
 * @ingroup Ecore_X_Window_Parent_Group
 */
EAPI void
ecore_x_window_reparent(Ecore_X_Window win,
                        Ecore_X_Window new_parent,
                        int            x,
                        int            y)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (new_parent == 0)
      new_parent = DefaultRootWindow(_ecore_x_disp);

   XReparentWindow(_ecore_x_disp, win, new_parent, x, y);
} /* ecore_x_window_reparent */

/**
 * Retrieves the size of the given window.
 * @param   win The given window.
 * @param   w   Pointer to an integer into which the width is to be stored.
 * @param   h   Pointer to an integer into which the height is to be stored.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_size_get(Ecore_X_Window win, int *w, int *h)
{
   int dummy_x, dummy_y;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (win == 0)
      win = DefaultRootWindow(_ecore_x_disp);

   ecore_x_drawable_geometry_get(win, &dummy_x, &dummy_y, w, h);
} /* ecore_x_window_size_get */

/**
 * Retrieves the geometry of the given window.
 *
 * Note that the x & y coordingates are relative to your parent.  In
 * particular for reparenting window managers - relative to you window border.
 * If you want screen coordinates either walk the window tree to the root,
 * else for ecore_evas applications see ecore_evas_geometry_get().  Elementary
 * applications can use elm_win_screen_position_get().
 *
 * @param   win The given window.
 * @param   x   Pointer to an integer in which the X position is to be stored.
 * @param   y   Pointer to an integer in which the Y position is to be stored.
 * @param   w   Pointer to an integer in which the width is to be stored.
 * @param   h   Pointer to an integer in which the height is to be stored.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_geometry_get(Ecore_X_Window win, int *x, int *y, int *w, int *h)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!win)
      win = DefaultRootWindow(_ecore_x_disp);

   ecore_x_drawable_geometry_get(win, x, y, w, h);
} /* ecore_x_window_geometry_get */

/**
 * Retrieves the width of the border of the given window.
 * @param   win The given window.
 * @return  Width of the border of @p win.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI int
ecore_x_window_border_width_get(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   /* doesn't make sense to call this on a root window */
   if (!win)
      return 0;

   return ecore_x_drawable_border_width_get(win);
} /* ecore_x_window_border_width_get */

/**
 * Sets the width of the border of the given window.
 * @param   win The given window.
 * @param   width The new border width.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_border_width_set(Ecore_X_Window win, int width)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   /* doesn't make sense to call this on a root window */
   if (!win)
      return;

   XSetWindowBorderWidth (_ecore_x_disp, win, width);
} /* ecore_x_window_border_width_set */

/**
 * Retrieves the depth of the given window.
 * @param  win The given window.
 * @return Depth of the window.
 */
EAPI int
ecore_x_window_depth_get(Ecore_X_Window win)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return ecore_x_drawable_depth_get(win);
} /* ecore_x_window_depth_get */

/**
 * To be documented.
 *
 * FIXME: To be fixed.
 */
EAPI void
ecore_x_window_cursor_show(Ecore_X_Window win, Eina_Bool show)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (win == 0)
      win = DefaultRootWindow(_ecore_x_disp);

   if (!show)
     {
        Cursor c;
        XColor cl;
        Pixmap p, m;
        GC gc;
        XGCValues gcv;

        p = XCreatePixmap(_ecore_x_disp, win, 1, 1, 1);
        m = XCreatePixmap(_ecore_x_disp, win, 1, 1, 1);
        gc = XCreateGC(_ecore_x_disp, m, 0, &gcv);
        XSetForeground(_ecore_x_disp, gc, 0);
        XDrawPoint(_ecore_x_disp, m, gc, 0, 0);
        XFreeGC(_ecore_x_disp, gc);
        c = XCreatePixmapCursor(_ecore_x_disp, p, m, &cl, &cl, 0, 0);
        XDefineCursor(_ecore_x_disp, win, c);
        XFreeCursor(_ecore_x_disp, c);
        XFreePixmap(_ecore_x_disp, p);
        XFreePixmap(_ecore_x_disp, m);
     }
   else
      XDefineCursor(_ecore_x_disp, win, 0);
} /* ecore_x_window_cursor_show */

EAPI void
ecore_x_window_cursor_set(Ecore_X_Window win, Ecore_X_Cursor c)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (c == 0)
      XUndefineCursor(_ecore_x_disp, win);
   else
      XDefineCursor(_ecore_x_disp, win, c);
} /* ecore_x_window_cursor_set */

/**
 * Finds out whether the given window is currently visible.
 * @param   win The given window.
 * @return  1 if the window is visible, otherwise 0.
 * @ingroup Ecore_X_Window_Visibility_Group
 */
EAPI int
ecore_x_window_visible_get(Ecore_X_Window win)
{
   XWindowAttributes attr;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return (XGetWindowAttributes(_ecore_x_disp, win, &attr) &&
           (attr.map_state == IsViewable));
} /* ecore_x_window_visible_get */

typedef struct _Shadow   Shadow;
struct _Shadow
{
   Shadow        *parent;
   Shadow       **children;
   Window         win;
   int            children_num;
   short          x, y;
   unsigned short w, h;
};

static Shadow **shadow_base = NULL;
static int shadow_num = 0;

static Shadow *
_ecore_x_window_tree_walk(Window win)
{
   Window *list = NULL;
   Window parent_win = 0, root_win = 0;
   unsigned int num;
   Shadow *s, **sl;
   XWindowAttributes att;

   if (!XGetWindowAttributes(_ecore_x_disp, win, &att))
      return NULL;  //   if (att.class == InputOnly) return NULL;

   if (att.map_state != IsViewable)
      return NULL;

   s = calloc(1, sizeof(Shadow));
   if (!s)
      return NULL;

   s->win = win;
   s->x = att.x;
   s->y = att.y;
   s->w = att.width;
   s->h = att.height;
   if (XQueryTree(_ecore_x_disp, s->win, &root_win, &parent_win,
                  &list, &num))
     {
        s->children = calloc(1, sizeof(Shadow *) * num);
        if (s->children)
          {
             size_t i, j;
             s->children_num = num;
             for (i = 0; i < num; i++)
               {
                  s->children[i] = _ecore_x_window_tree_walk(list[i]);
                  if (s->children[i])
                     s->children[i]->parent = s;
               }
             /* compress list down */
             j = 0;
             for (i = 0; i < num; i++)
               {
                  if (s->children[i])
                    {
                       s->children[j] = s->children[i];
                       j++;
                    }
               }
             if (j == 0)
               {
                  free(s->children);
                  s->children = NULL;
                  s->children_num = 0;
               }
             else
               {
                  s->children_num = j;
                  sl = realloc(s->children, sizeof(Shadow *) * j);
                  if (sl)
                     s->children = sl;
               }
          }
     }

   if (list)
      XFree(list);

   return s;
} /* _ecore_x_window_tree_walk */

static void
_ecore_x_window_tree_shadow_free1(Shadow *s)
{
   int i;

   if (!s)
      return;

   if (s->children)
     {
        for (i = 0; i < s->children_num; i++)
          {
             if (s->children[i])
                _ecore_x_window_tree_shadow_free1(s->children[i]);
          }
        free(s->children);
     }

   free(s);
} /* _ecore_x_window_tree_shadow_free1 */

static void
_ecore_x_window_tree_shadow_free(void)
{
   int i;

   if (!shadow_base)
      return;

   for (i = 0; i < shadow_num; i++)
     {
        if (!shadow_base[i])
           continue;

        _ecore_x_window_tree_shadow_free1(shadow_base[i]);
     }
   free(shadow_base);
   shadow_base = NULL;
   shadow_num = 0;
} /* _ecore_x_window_tree_shadow_free */

static void
_ecore_x_window_tree_shadow_populate(void)
{
   Ecore_X_Window *roots;
   int i, num;

   roots = ecore_x_window_root_list(&num);
   if (roots)
     {
        shadow_base = calloc(1, sizeof(Shadow *) * num);
        if (shadow_base)
          {
             shadow_num = num;
             for (i = 0; i < num; i++)
                shadow_base[i] = _ecore_x_window_tree_walk(roots[i]);
          }

        free(roots);
     }
} /* _ecore_x_window_tree_shadow_populate */

/*
   static int shadow_count = 0;

   static void
   _ecore_x_window_tree_shadow_start(void)
   {
   shadow_count++;
   if (shadow_count > 1) return;
   _ecore_x_window_tree_shadow_populate();
   }

   static void
   _ecore_x_window_tree_shadow_stop(void)
   {
   shadow_count--;
   if (shadow_count != 0) return;
   _ecore_x_window_tree_shadow_free();
   }
 */

static Shadow *
_ecore_x_window_shadow_tree_find_shadow(Shadow *s, Window win)
{
   Shadow *ss;
   int i;

   if (s->win == win)
      return s;

   if (s->children)
      for (i = 0; i < s->children_num; i++)
        {
           if (!s->children[i])
              continue;

           if ((ss =
                   _ecore_x_window_shadow_tree_find_shadow(s->children[i], win)))
              return ss;
        }

   return NULL;
} /* _ecore_x_window_shadow_tree_find_shadow */

static Shadow *
_ecore_x_window_shadow_tree_find(Window base)
{
   Shadow *s;
   int i;

   for (i = 0; i < shadow_num; i++)
     {
        if (!shadow_base[i])
           continue;

        if ((s = _ecore_x_window_shadow_tree_find_shadow(shadow_base[i], base)))
           return s;
     }
   return NULL;
} /* _ecore_x_window_shadow_tree_find */

static int
_inside_rects(Shadow *s, int x, int y, int bx, int by, Ecore_X_Rectangle *rects, int num)
{
   int i, inside;
        
   if (!rects) return 0;
   inside = 0;
   for (i = 0; i < num; i++)
     {
        if ((x >= s->x + bx + rects[i].x) && 
            (y >= s->y + by + rects[i].y) && 
            (x < (int)(s->x + bx + rects[i].x + rects[i].width)) && 
            (y < (int)(s->y + by + rects[i].y + rects[i].height)))
          {
             inside = 1;
             break;
          }
     }
   free(rects);
   return inside;
}

static Window
_ecore_x_window_shadow_tree_at_xy_get_shadow(Shadow         *s,
                                             int             bx,
                                             int             by,
                                             int             x,
                                             int             y,
                                             Ecore_X_Window *skip,
                                             int             skip_num)
{
   Window child;
   int i, j;
   int wx, wy;

   wx = s->x + bx;
   wy = s->y + by;
   if (!((x >= wx) && (y >= wy) && (x < (wx + s->w)) && (y < (wy + s->h))))
      return 0;
   
   /* FIXME: get shape */
     {
        int num;
        Ecore_X_Rectangle *rects;

        num = 0;
        rects = ecore_x_window_shape_rectangles_get(s->win, &num);
        if (!_inside_rects(s, x, y, bx, by, rects, num)) return 0;
        num = 0;
        rects = ecore_x_window_shape_input_rectangles_get(s->win, &num);
        if (!_inside_rects(s, x, y, bx, by, rects, num)) return 0;
     }

   if (s->children)
     {
        int skipit = 0;

        for (i = s->children_num - 1; i >= 0; --i)
          {
             if (!s->children[i])
                continue;

             skipit = 0;
             if (skip)
                for (j = 0; j < skip_num; j++)
                  {
                     if (s->children[i]->win == skip[j])
                       {
                          skipit = 1;
                          goto onward;
                       }
                  }

onward:
             if (!skipit)
                if ((child =
                        _ecore_x_window_shadow_tree_at_xy_get_shadow(s->
                                                                     children[i
                                                                     ], wx, wy,
                                                                     x, y, skip,
                                                                     skip_num)))
                   return child;

          }
     }

   return s->win;
} /* _ecore_x_window_shadow_tree_at_xy_get_shadow */

static Window
_ecore_x_window_shadow_tree_at_xy_get(Window base, int bx, int by, int x, int y,
                                      Ecore_X_Window *skip, int skip_num)
{
   Shadow *s;

   if (!shadow_base)
     {
        _ecore_x_window_tree_shadow_populate();
        if (!shadow_base)
           return 0;
     }

   s = _ecore_x_window_shadow_tree_find(base);
   if (!s)
      return 0;

   return _ecore_x_window_shadow_tree_at_xy_get_shadow(s,
                                                       bx,
                                                       by,
                                                       x,
                                                       y,
                                                       skip,
                                                       skip_num);
} /* _ecore_x_window_shadow_tree_at_xy_get */

/**
 * Retrieves the top, visible window at the given location,
 * but skips the windows in the list. This uses a shadow tree built from the
 * window tree that is only updated the first time
 * ecore_x_window_shadow_tree_at_xy_with_skip_get() is called, or the next time
 * it is called after a  ecore_x_window_shadow_tree_flush()
 * @param   base The base window to start searching from (normally root).
 * @param   x The given X position.
 * @param   y The given Y position.
 * @return  The window at that position.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI Ecore_X_Window
ecore_x_window_shadow_tree_at_xy_with_skip_get(Ecore_X_Window  base,
                                               int             x,
                                               int             y,
                                               Ecore_X_Window *skip,
                                               int             skip_num)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return _ecore_x_window_shadow_tree_at_xy_get(base,
                                                0,
                                                0,
                                                x,
                                                y,
                                                skip,
                                                skip_num);
} /* ecore_x_window_shadow_tree_at_xy_with_skip_get */

/**
 * Retrieves the parent window a given window has. This uses the shadow window
 * tree.
 * @param   root The root window of @p win - if 0, this will be automatically determined with extra processing overhead
 * @param   win The window to get the parent window of
 * @return  The parent window of @p win
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI Ecore_X_Window
ecore_x_window_shadow_parent_get(Ecore_X_Window root __UNUSED__,
                                 Ecore_X_Window      win)
{
   Shadow *s;
   int i;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!shadow_base)
     {
        _ecore_x_window_tree_shadow_populate();
        if (!shadow_base)
           return 0;
     }

   for (i = 0; i < shadow_num; i++)
     {
        if (!shadow_base[i])
           continue;

        s = _ecore_x_window_shadow_tree_find_shadow(shadow_base[i], win);
        if (s)
          {
             if (!s->parent)
                return 0;

             return s->parent->win;
          }
     }
   return 0;
} /* ecore_x_window_shadow_parent_get */

/**
 * Flushes the window shadow tree so nothing is stored.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI void
ecore_x_window_shadow_tree_flush(void)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   _ecore_x_window_tree_shadow_free();
} /* ecore_x_window_shadow_tree_flush */

/**
 * Retrieves the root window a given window is on.
 * @param   win The window to get the root window of
 * @return  The root window of @p win
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI Ecore_X_Window
ecore_x_window_root_get(Ecore_X_Window win)
{
   XWindowAttributes att;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!XGetWindowAttributes(_ecore_x_disp, win, &att))
      return 0;

   return att.root;
} /* ecore_x_window_root_get */

static Window
_ecore_x_window_at_xy_get(Window base, int bx, int by, int x, int y,
                          Ecore_X_Window *skip, int skip_num)
{
   Window *list = NULL;
   Window parent_win = 0, child = 0, root_win = 0;
   int i, j, wx, wy, ww, wh;
   unsigned int num;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!ecore_x_window_visible_get(base))
      return 0;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   ecore_x_window_geometry_get(base, &wx, &wy, &ww, &wh);
   wx += bx;
   wy += by;

   if (!((x >= wx) && (y >= wy) && (x < (wx + ww)) && (y < (wy + wh))))
      return 0;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!XQueryTree(_ecore_x_disp, base, &root_win, &parent_win, &list, &num))
      return base;

   if (list)
     {
        int skipit = 0;

        for (i = num - 1; i >= 0; --i)
          {
             skipit = 0;

             if (skip)
                for (j = 0; j < skip_num; j++)
                  {
                     if (list[i] == skip[j])
                       {
                          skipit = 1;
                          goto onward;
                       }
                  }

onward:
             if (!skipit)
                if ((child =
                        _ecore_x_window_at_xy_get(list[i], wx, wy, x, y, skip,
                                                  skip_num)))
                  {
                     XFree(list);
                     return child;
                  }

          }
        XFree(list);
     }

   return base;
} /* _ecore_x_window_at_xy_get */

/**
 * Retrieves the top, visible window at the given location.
 * @param   x The given X position.
 * @param   y The given Y position.
 * @return  The window at that position.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI Ecore_X_Window
ecore_x_window_at_xy_get(int x, int y)
{
   Ecore_X_Window win, root;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   /* FIXME: Proper function to determine current root/virtual root
    * window missing here */
   root = DefaultRootWindow(_ecore_x_disp);

   ecore_x_grab();
   win = _ecore_x_window_at_xy_get(root, 0, 0, x, y, NULL, 0);
   ecore_x_ungrab();

   return win ? win : root;
} /* ecore_x_window_at_xy_get */

/**
 * Retrieves the top, visible window at the given location,
 * but skips the windows in the list.
 * @param   x The given X position.
 * @param   y The given Y position.
 * @return  The window at that position.
 * @ingroup Ecore_X_Window_Geometry_Group
 */
EAPI Ecore_X_Window
ecore_x_window_at_xy_with_skip_get(int             x,
                                   int             y,
                                   Ecore_X_Window *skip,
                                   int             skip_num)
{
   Ecore_X_Window win, root;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   /* FIXME: Proper function to determine current root/virtual root
    * window missing here */
   root = DefaultRootWindow(_ecore_x_disp);

   ecore_x_grab();
   win = _ecore_x_window_at_xy_get(root, 0, 0, x, y, skip, skip_num);
   ecore_x_ungrab();

   return win ? win : root;
} /* ecore_x_window_at_xy_with_skip_get */

EAPI Ecore_X_Window
ecore_x_window_at_xy_begin_get(Ecore_X_Window begin, int x, int y)
{
   Ecore_X_Window win;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   ecore_x_grab();
   win = _ecore_x_window_at_xy_get(begin, 0, 0, x, y, NULL, 0);
   ecore_x_ungrab();

   return win ? win : begin;
} /* ecore_x_window_at_xy_begin_get */

/**
 * Retrieves the parent window of the given window.
 * @param   win The given window.
 * @return  The parent window of @p win.
 * @ingroup Ecore_X_Window_Parent_Group
 */
EAPI Ecore_X_Window
ecore_x_window_parent_get(Ecore_X_Window win)
{
   Window root, parent, *children = NULL;
   unsigned int num;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   if (!XQueryTree(_ecore_x_disp, win, &root, &parent, &children, &num))
      return 0;

   if (children)
      XFree(children);

   return parent;
} /* ecore_x_window_parent_get */

/**
 * Sets the background color of the given window.
 * @param win   The given window
 * @param r     red value (0...65536, 16 bits)
 * @param g     green value (0...65536, 16 bits)
 * @param b     blue value (0...65536, 16 bits)
 */
EAPI void
ecore_x_window_background_color_set(Ecore_X_Window win, unsigned short r,
                                    unsigned short g, unsigned short b)
{
   XSetWindowAttributes attr;
   Colormap map;
   XColor col;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   col.red = r;
   col.green = g;
   col.blue = b;

   map = DefaultColormap(_ecore_x_disp, DefaultScreen(_ecore_x_disp));
   XAllocColor(_ecore_x_disp, map, &col);

   attr.background_pixel = col.pixel;
   XChangeWindowAttributes(_ecore_x_disp, win, CWBackPixel, &attr);
} /* ecore_x_window_background_color_set */

EAPI void
ecore_x_window_gravity_set(Ecore_X_Window win, Ecore_X_Gravity grav)
{
   XSetWindowAttributes att;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   att.win_gravity = grav;
   XChangeWindowAttributes(_ecore_x_disp, win, CWWinGravity, &att);
} /* ecore_x_window_gravity_set */

EAPI void
ecore_x_window_pixel_gravity_set(Ecore_X_Window win, Ecore_X_Gravity grav)
{
   XSetWindowAttributes att;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   att.bit_gravity = grav;
   XChangeWindowAttributes(_ecore_x_disp, win, CWBitGravity, &att);
} /* ecore_x_window_pixel_gravity_set */

EAPI void
ecore_x_window_pixmap_set(Ecore_X_Window win, Ecore_X_Pixmap pmap)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XSetWindowBackgroundPixmap(_ecore_x_disp, win, pmap);
} /* ecore_x_window_pixmap_set */

EAPI void
ecore_x_window_area_clear(Ecore_X_Window win, int x, int y, int w, int h)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XClearArea(_ecore_x_disp, win, x, y, w, h, False);
} /* ecore_x_window_area_clear */

EAPI void
ecore_x_window_area_expose(Ecore_X_Window win, int x, int y, int w, int h)
{
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   XClearArea(_ecore_x_disp, win, x, y, w, h, True);
} /* ecore_x_window_area_expose */

EAPI void
ecore_x_window_override_set(Ecore_X_Window win, Eina_Bool override)
{
   XSetWindowAttributes att;

   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   att.override_redirect = override;
   XChangeWindowAttributes(_ecore_x_disp, win, CWOverrideRedirect, &att);
} /* ecore_x_window_override_set */

#ifdef ECORE_XRENDER
static Ecore_X_Window
_ecore_x_window_argb_internal_new(Ecore_X_Window parent,
                                  int            x,
                                  int            y,
                                  int            w,
                                  int            h,
                                  Eina_Bool      override,
                                  Eina_Bool      saveunder)
{
   Window win;
   XSetWindowAttributes attr;
   XWindowAttributes att;
   XVisualInfo *xvi;
   XVisualInfo vi_in;
   int nvi, i, scr = 0;
   XRenderPictFormat *fmt;
   Visual *vis;

   if (parent == 0)
     {
        parent = DefaultRootWindow(_ecore_x_disp);
        scr = DefaultScreen(_ecore_x_disp);
     }
   else
     {
        /* ewww - round trip */
        XGetWindowAttributes(_ecore_x_disp, parent, &att);
        for (i = 0; i < ScreenCount(_ecore_x_disp); i++)
          {
             if (att.screen == ScreenOfDisplay(_ecore_x_disp, i))
               {
                  scr = i;
                  break;
               }
          }
     }

   vi_in.screen = scr;
   vi_in.depth = 32;
   vi_in.class = TrueColor;
   xvi = XGetVisualInfo(_ecore_x_disp,
                        VisualScreenMask |
                        VisualDepthMask |
                        VisualClassMask,
                        &vi_in,
                        &nvi);
   if (!xvi)
      return 0;

   vis = NULL;
   for (i = 0; i < nvi; i++)
     {
        fmt = XRenderFindVisualFormat(_ecore_x_disp, xvi[i].visual);
        if ((fmt->type == PictTypeDirect) && (fmt->direct.alphaMask))
          {
             vis = xvi[i].visual;
             break;
          }
     }
   XFree (xvi);

   attr.backing_store = NotUseful;
   attr.override_redirect = override;
   attr.colormap = XCreateColormap(_ecore_x_disp, parent,
                                   vis, AllocNone);
   attr.border_pixel = 0;
   attr.background_pixmap = None;
   attr.bit_gravity = NorthWestGravity;
   attr.win_gravity = NorthWestGravity;
   attr.save_under = saveunder;
   attr.do_not_propagate_mask = NoEventMask;
   attr.event_mask = KeyPressMask |
      KeyReleaseMask |
      ButtonPressMask |
      ButtonReleaseMask |
      EnterWindowMask |
      LeaveWindowMask |
      PointerMotionMask |
      ExposureMask |
      VisibilityChangeMask |
      StructureNotifyMask |
      FocusChangeMask |
      PropertyChangeMask |
      ColormapChangeMask;
   win = XCreateWindow(_ecore_x_disp, parent,
                       x, y, w, h, 0,
                       32,
                       InputOutput,
                       vis,
                       CWBackingStore |
                       CWOverrideRedirect |
                       CWColormap |
                       CWBorderPixel |
                       CWBackPixmap |
                       CWSaveUnder |
                       CWDontPropagate |
                       CWEventMask |
                       CWBitGravity |
                       CWWinGravity,
                       &attr);
   XFreeColormap(_ecore_x_disp, attr.colormap);

   if (parent == DefaultRootWindow(_ecore_x_disp))
      ecore_x_window_defaults_set(win);

   return win;
} /* _ecore_x_window_argb_internal_new */

#endif /* ifdef ECORE_XRENDER */

EAPI int
ecore_x_window_argb_get(Ecore_X_Window win)
{
#ifdef ECORE_XRENDER
   XWindowAttributes att;
   XRenderPictFormat *fmt;

   att.visual = 0;
   if (!XGetWindowAttributes(_ecore_x_disp, win, &att))
      return 0;

   fmt = XRenderFindVisualFormat(_ecore_x_disp, att.visual);
   if (!fmt)
      return 0;

   if ((fmt->type == PictTypeDirect) && (fmt->direct.alphaMask))
      return 1;

   return 0;
#else /* ifdef ECORE_XRENDER */
   return 0;
#endif /* ifdef ECORE_XRENDER */
} /* ecore_x_window_argb_get */

/**
 * Creates a new window.
 * @param   parent The parent window to use.  If @p parent is @c 0, the root
 *                 window of the default display is used.
 * @param   x      X position.
 * @param   y      Y position.
 * @param   w      Width.
 * @param   h      Height.
 * @return  The new window handle.
 * @ingroup Ecore_X_Window_Create_Group
 */
EAPI Ecore_X_Window
ecore_x_window_manager_argb_new(Ecore_X_Window parent,
                                int            x,
                                int            y,
                                int            w,
                                int            h)
{
#ifdef ECORE_XRENDER
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return _ecore_x_window_argb_internal_new(parent, x, y, w, h, 1, 0);
#else /* ifdef ECORE_XRENDER */
   return 0;
#endif /* ifdef ECORE_XRENDER */
} /* ecore_x_window_manager_argb_new */

/**
 * Creates a new window.
 * @param   parent The parent window to use.  If @p parent is @c 0, the root
 *                 window of the default display is used.
 * @param   x      X position.
 * @param   y      Y position.
 * @param   w      Width.
 * @param   h      Height.
 * @return  The new window handle.
 * @ingroup Ecore_X_Window_Create_Group
 */
EAPI Ecore_X_Window
ecore_x_window_argb_new(Ecore_X_Window parent, int x, int y, int w, int h)
{
#ifdef ECORE_XRENDER
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return _ecore_x_window_argb_internal_new(parent, x, y, w, h, 0, 0);
#else /* ifdef ECORE_XRENDER */
   return 0;
#endif /* ifdef ECORE_XRENDER */
} /* ecore_x_window_argb_new */

/**
 * Creates a window with the override redirect attribute set to @c True.
 * @param   parent The parent window to use.  If @p parent is @c 0, the root
 *                 window of the default display is used.
 * @param   x      X position.
 * @param   y      Y position.
 * @param   w      Width.
 * @param   h      Height.
 * @return  The new window handle.
 * @ingroup Ecore_X_Window_Create_Group
 */
EAPI Ecore_X_Window
ecore_x_window_override_argb_new(Ecore_X_Window parent,
                                 int            x,
                                 int            y,
                                 int            w,
                                 int            h)
{
#ifdef ECORE_XRENDER
   LOGFN(__FILE__, __LINE__, __FUNCTION__);
   return _ecore_x_window_argb_internal_new(parent, x, y, w, h, 1, 0);
#else /* ifdef ECORE_XRENDER */
   return 0;
#endif /* ifdef ECORE_XRENDER */
} /* ecore_x_window_override_argb_new */