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/****************************************************************************
* include/nuttx/nx/nxbe.h
*
* Copyright (C) 2008-2011, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_NX_NXBE_H
#define __INCLUDE_NUTTX_NX_NXBE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/nx/nx.h>
#include <nuttx/nx/nxglib.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifndef CONFIG_NX_NPLANES
# define CONFIG_NX_NPLANES 1 /* Max number of color planes supported */
#endif
#ifndef CONFIG_NX_NCOLORS
# define CONFIG_NX_NCOLORS 256
#endif
/* NXBE Definitions *********************************************************/
/* Window flags and helper macros */
#define NXBE_WINDOW_BLOCKED (1 << 0) /* The window is blocked and will not
* receive further input. */
#define NXBE_ISBLOCKED(wnd) (((wnd)->flags & NXBE_WINDOW_BLOCKED) != 0)
#define NXBE_SETBLOCKED(wnd) do { (wnd)->flags |= NXBE_WINDOW_BLOCKED; } while (0)
/****************************************************************************
* Public Types
****************************************************************************/
/* Windows ******************************************************************/
/* This structure represents one window. This is the "base" form of the
* opaque types NXWINDOW and NXTKWINDOW. Any Window implementatin must
* be described with a structure that is at least cast-compatible with
* struct nxbe_window_s.
*/
struct nxbe_state_s;
struct nxfe_conn_s;
struct nxbe_window_s
{
/* State information */
FAR struct nxbe_state_s *be; /* The back-end state structure */
#ifdef CONFIG_NX_MULTIUSER
FAR struct nxfe_conn_s *conn; /* Connection to the window client */
#endif
FAR const struct nx_callback_s *cb; /* Event handling callbacks */
/* The following links provide the window's vertical position using a
* singly linked list.
*/
FAR struct nxbe_window_s *above; /* The window "above" this window */
FAR struct nxbe_window_s *below; /* The window "below this one */
/* Window geometry. The window is described by a rectangle in the
* absolute screen coordinate system (0,0)->(xres,yres)
*/
struct nxgl_rect_s bounds; /* The bounding rectangle of window */
/* Window flags (see the NXBE_* bit definitions above) */
#ifdef CONFIG_NX_MULTIUSER /* Currently used only in multi-user mode */
uint8_t flags;
#endif
/* Client state information this is provide in window callbacks */
FAR void *arg;
};
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __INCLUDE_NUTTX_NX_NXBE_H */
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