text: /****************************************************************************
   * apps/examples/nxhello/nxhello.h
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  #ifndef __APPS_EXAMPLES_NXHELLO_NXHELLO_H
  #define __APPS_EXAMPLES_NXHELLO_NXHELLO_H
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <stdint.h>
  #include <stdbool.h>
  #include <semaphore.h>
  
  #include <nuttx/nx/nxglib.h>
  #include <nuttx/nx/nx.h>
  #include <nuttx/nx/nxfonts.h>
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /* Configuration ************************************************************/
  
  #ifndef CONFIG_NX
  #  error "NX is not enabled (CONFIG_NX)"
  #endif
  
  /* If not specified, assume that the hardware supports one video plane */
  
  #if CONFIG_NX_NPLANES != 1
  #  error "Only CONFIG_NX_NPLANES==1 supported"
  #endif
  
  #ifndef CONFIG_EXAMPLES_NXHELLO_BGCOLOR
  #  if CONFIG_EXAMPLES_NXHELLO_BPP == 24 || CONFIG_EXAMPLES_NXHELLO_BPP == 32
  #    define CONFIG_EXAMPLES_NXHELLO_BGCOLOR 0x007b68ee
  #  elif CONFIG_EXAMPLES_NXHELLO_BPP == 16
  #    define CONFIG_EXAMPLES_NXHELLO_BGCOLOR 0x7b5d
  #  elif CONFIG_EXAMPLES_NXHELLO_BPP < 8
  #    define CONFIG_EXAMPLES_NXHELLO_BGCOLOR 0x00
  #  else
  #    define CONFIG_EXAMPLES_NXHELLO_BGCOLOR ' '
  # endif
  #endif
  
  #ifndef CONFIG_EXAMPLES_NXHELLO_FONTID
  #  define CONFIG_EXAMPLES_NXHELLO_FONTID NXFONT_DEFAULT
  #endif
  
  #ifndef CONFIG_EXAMPLES_NXHELLO_FONTCOLOR
  #  if CONFIG_EXAMPLES_NXHELLO_BPP == 24 || CONFIG_EXAMPLES_NXHELLO_BPP == 32
  #    define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 0x00000000
  #  elif CONFIG_EXAMPLES_NXHELLO_BPP == 16
  #    define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 0x0000
  #  elif CONFIG_EXAMPLES_NXHELLO_BPP < 1
  #    define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 0x01
  #  else
  #    define CONFIG_EXAMPLES_NXHELLO_FONTCOLOR 'F'
  #  endif
  #endif
  
  /* NX server support */
  
  #ifdef CONFIG_DISABLE_MQUEUE
  #  error "The multi-threaded example requires MQ support (CONFIG_DISABLE_MQUEUE=n)"
  #endif
  #ifdef CONFIG_DISABLE_PTHREAD
  #  error "This example requires pthread support (CONFIG_DISABLE_PTHREAD=n)"
  #endif
  #ifndef CONFIG_NX_BLOCKING
  #  error "This example depends on CONFIG_NX_BLOCKING"
  #endif
  #ifndef CONFIG_EXAMPLES_NXHELLO_LISTENER_STACKSIZE
  #  define CONFIG_EXAMPLES_NXHELLO_LISTENER_STACKSIZE 2048
  #endif
  #ifndef CONFIG_EXAMPLES_NXHELLO_LISTENERPRIO
  #  define CONFIG_EXAMPLES_NXHELLO_LISTENERPRIO 100
  #endif
  #ifndef CONFIG_EXAMPLES_NXHELLO_CLIENTPRIO
  #  define CONFIG_EXAMPLES_NXHELLO_CLIENTPRIO 100
  #endif
  #ifndef CONFIG_EXAMPLES_NXHELLO_SERVERPRIO
  #  define CONFIG_EXAMPLES_NXHELLO_SERVERPRIO 120
  #endif
  #ifndef CONFIG_EXAMPLES_NXHELLO_NOTIFYSIGNO
  #  define CONFIG_EXAMPLES_NXHELLO_NOTIFYSIGNO 4
  #endif
  
  /****************************************************************************
   * Public Types
   ****************************************************************************/
  
  enum exitcode_e
  {
    NXEXIT_SUCCESS = 0,
    NXEXIT_INIT,
    NXEXIT_FONTOPEN,
    NXEXIT_NXREQUESTBKGD,
    NXEXIT_NXSETBGCOLOR
  };
  
  /* Describes one cached glyph bitmap */
  
  struct nxhello_glyph_s
  {
    uint8_t code;                        /* Character code */
    uint8_t height;                      /* Height of this glyph (in rows) */
    uint8_t width;                       /* Width of this glyph (in pixels) */
    uint8_t stride;                      /* Width of the glyph row (in bytes) */
    uint8_t usecnt;                      /* Use count */
    FAR uint8_t *bitmap;                 /* Allocated bitmap memory */
  };
  
  /* Describes on character on the display */
  
  struct nxhello_bitmap_s
  {
    uint8_t code;                        /* Character code */
    uint8_t flags;                       /* See BMFLAGS_* */
    struct nxgl_point_s pos;             /* Character position */
  };
  
  struct nxhello_data_s
  {
    /* The NX handles */
  
    NXHANDLE hnx;
    NXHANDLE hbkgd;
    NXHANDLE hfont;
    bool connected;
  
    /* The screen resolution */
  
    nxgl_coord_t xres;
    nxgl_coord_t yres;
  
    volatile bool havepos;
    sem_t eventsem;
    volatile int code;
  };
  
  /****************************************************************************
   * Public Data
   ****************************************************************************/
  
  /* NXHELLO state data */
  
  extern struct nxhello_data_s g_nxhello;
  
  /* NX callback vtables */
  
  extern const struct nx_callback_s g_nxhellocb;
  
  /****************************************************************************
   * Public Function Prototypes
   ****************************************************************************/
  
  /* NX event listener */
  
  FAR void *nxhello_listener(FAR void *arg);
  
  /* Background window interfaces */
  
  void nxhello_hello(NXWINDOW hwnd);
  
  #endif /* __APPS_EXAMPLES_NXHELLO_NXHELLO_H */
  