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#include "mb-wm-client-desktop.h"
#include "mb-wm-theme.h"

static Bool
mb_wm_client_desktop_request_geometry (MBWindowManagerClient *client,
				       MBGeometry            *new_geometry,
				       MBWMClientReqGeomType  flags);

static MBWMStackLayerType
mb_wm_client_desktop_stacking_layer (MBWindowManagerClient *client);

static void
mb_wm_client_desktop_theme_change (MBWindowManagerClient *client);

static void
mb_wm_client_desktop_class_init (MBWMObjectClass *klass)
{
  MBWindowManagerClientClass *client;
  MBWMClientDesktopClass * client_desktop;

  MBWM_MARK();

  client     = (MBWindowManagerClientClass *)klass;
  client_desktop = (MBWMClientDesktopClass *)klass;

  client->client_type    = MBWMClientTypeDesktop;
  client->geometry       = mb_wm_client_desktop_request_geometry;
  client->stacking_layer = mb_wm_client_desktop_stacking_layer;
  client->theme_change   = mb_wm_client_desktop_theme_change;

#if MBWM_WANT_DEBUG
  klass->klass_name = "MBWMClientDesktop";
#endif
}

static void
mb_wm_client_desktop_destroy (MBWMObject *this)
{
}

static int
mb_wm_client_desktop_init (MBWMObject *this, va_list vap)
{
  MBWindowManagerClient    *client         = MB_WM_CLIENT (this);
  MBWMManager          *wm = NULL;
  MBWMClientDesktopClass   *inp_class;
  MBGeometry                geom;

  inp_class = MB_WM_CLIENT_DESKTOP_CLASS (MB_WM_OBJECT_GET_CLASS (this));

  wm = client->wmref;

  if (!wm)
    return 0;

  client->stacking_layer = MBWMStackLayerBottom;

  mb_wm_client_set_layout_hints (client,
				 LayoutPrefFullscreen|LayoutPrefVisible);

  if (!client->window->undecorated)
    {
      mb_wm_theme_create_decor (wm->theme, client, MBWMDecorTypeNorth);
      mb_wm_theme_create_decor (wm->theme, client, MBWMDecorTypeSouth);
      mb_wm_theme_create_decor (wm->theme, client, MBWMDecorTypeWest);
      mb_wm_theme_create_decor (wm->theme, client, MBWMDecorTypeEast);
    }

  /*
   * Initialize window geometry, so that the frame size is correct
   */
  geom.x      = 0;
  geom.y      = 0;
  geom.width  = wm->xdpy_width;
  geom.height = wm->xdpy_height;

  mb_wm_client_desktop_request_geometry (client, &geom,
					 MBWMClientReqGeomForced);

  return 1;
}

int
mb_wm_client_desktop_class_type ()
{
  static int type = 0;

  if (UNLIKELY(type == 0))
    {
      static MBWMObjectClassInfo info = {
	sizeof (MBWMClientDesktopClass),
	sizeof (MBWMClientDesktop),
	mb_wm_client_desktop_init,
	mb_wm_client_desktop_destroy,
	mb_wm_client_desktop_class_init
      };
      type = mb_wm_object_register_class (&info, MB_WM_TYPE_CLIENT_BASE, 0);
    }

  return type;
}

static Bool
mb_wm_client_desktop_request_geometry (MBWindowManagerClient *client,
				       MBGeometry            *new_geometry,
				       MBWMClientReqGeomType  flags)
{
  if (flags & (MBWMClientReqGeomIsViaLayoutManager|MBWMClientReqGeomForced))
    {
      int north = 0, south = 0, west = 0, east = 0;
      MBWMManager *wm = client->wmref;

      if (client->decor)
	mb_wm_theme_get_decor_dimensions (wm->theme, client,
					  &north, &south, &west, &east);

      client->frame_geometry.x      = new_geometry->x;
      client->frame_geometry.y      = new_geometry->y;
      client->frame_geometry.width  = new_geometry->width;
      client->frame_geometry.height = new_geometry->height;

      client->window->geometry.x
	= client->frame_geometry.x + west;
      client->window->geometry.y
	= client->frame_geometry.y + north;
      client->window->geometry.width
	= client->frame_geometry.width - (west + east);
      client->window->geometry.height
	= client->frame_geometry.height - (south + north);

      mb_wm_client_geometry_mark_dirty (client);

      return True; /* Geometry accepted */
    }
  return False;
}

static MBWMStackLayerType
mb_wm_client_desktop_stacking_layer (MBWindowManagerClient *client)
{
  if (client->wmref->flags & MBWMManagerFlagDesktop)
    return MBWMStackLayerMid;

  return MBWMStackLayerBottom;
}

static void
mb_wm_client_desktop_theme_change (MBWindowManagerClient *client)
{
  GList * l = client->decor;

  while (l)
    {
      MBWMDecor * d = l->data;
      GList * n = l->next;

      mb_wm_object_unref (MB_WM_OBJECT (d));
      free (l);

      l = n;
    }

  client->decor = NULL;

  if (!client->window->undecorated)
    {
      mb_wm_theme_create_decor (client->wmref->theme,
				client, MBWMDecorTypeNorth);

      mb_wm_theme_create_decor (client->wmref->theme,
				client, MBWMDecorTypeSouth);

      mb_wm_theme_create_decor (client->wmref->theme,
				client, MBWMDecorTypeWest);

      mb_wm_theme_create_decor (client->wmref->theme,
				client, MBWMDecorTypeEast);
    }

  mb_wm_client_geometry_mark_dirty (client);
  mb_wm_client_visibility_mark_dirty (client);
}

MBWindowManagerClient*
mb_wm_client_desktop_new (MBWMManager *wm, MBWMClientWindow *win)
{
  MBWindowManagerClient *client;

  client = MB_WM_CLIENT(mb_wm_object_new (MB_WM_TYPE_CLIENT_DESKTOP,
					  MBWMObjectPropWm,           wm,
					  MBWMObjectPropClientWindow, win,
					  NULL));

  return client;
}