text: /****************************************************************************
   * apps/graphics/nuttx/pdcgetsc.c
   *
   *   Copyright (C) 2017 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.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #ifdef CONFIG_SYSTEM_TERMCURSES
  #include <nuttx/termcurses.h>
  #endif
  
  #include <sys/ioctl.h>
  #include "pdcnuttx.h"
  
  /****************************************************************************
   * Private Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: PDC_get_columns_term
   *
   * Description:
   *   Returns the size of the screen in columns. It's used in resize_term()
   *   to set the new value of COLS. (Some existing implementations also call
   *   it internally from PDC_scr_open(), but this is not required.)
   *
   ****************************************************************************/
  
  #ifdef CONFIG_SYSTEM_TERMCURSES
  int PDC_get_columns_term(FAR SCREEN *sp)
  {
    FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
    FAR struct pdc_termstate_s  *termstate = &termscreen->termstate;
    struct winsize winsz;
    int ret;
  
    /* Call termcurses function to get window size */
  
    ret =termcurses_getwinsize(termstate->tcurs, &winsz);
    if (ret == OK)
      {
        return winsz.ws_col;
      }
  
    return ret;
  }
  #endif  /* CONFIG_SYSTEM_TERMCURSES */
  
  /****************************************************************************
   * Name: PDC_get_rows
   *
   * Description:
   *  Returns the size of the screen in rows. It's used in resize_term() to
   *  set the new value of LINES. (Some existing implementations also call it
   *  internally from PDC_scr_open(), but this is not required.)
   *
   ****************************************************************************/
  
  #ifdef CONFIG_SYSTEM_TERMCURSES
  int PDC_get_rows_term(FAR SCREEN *sp)
  {
    FAR struct pdc_termscreen_s *termscreen = (FAR struct pdc_termscreen_s *)sp;
    FAR struct pdc_termstate_s  *termstate = &termscreen->termstate;
    struct winsize winsz;
    int ret;
  
    /* Call termcurses function to get window size */
  
    ret =termcurses_getwinsize(termstate->tcurs, &winsz);
    if (ret == OK)
      {
        return winsz.ws_row;
      }
  
    return ret;
  }
  #endif /* CONFIG_SYSTEM_TERMCURSES */
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: PDC_get_rows
   *
   * Description:
   *  Returns the size of the screen in rows. It's used in resize_term() to
   *  set the new value of LINES. (Some existing implementations also call it
   *  internally from PDC_scr_open(), but this is not required.)
   *
   ****************************************************************************/
  
  int PDC_get_rows(void)
  {
  #ifdef CONFIG_PDCURSES_MULTITHREAD
    FAR struct pdc_context_s *ctx = PDC_ctx();
  #endif
    FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
    FAR struct pdc_fbstate_s *fbstate;
  
  #ifdef CONFIG_SYSTEM_TERMCURSES
    if (!graphic_screen)
      {
         /* Call termcurses version of PDC_get_rows */
  
         return PDC_get_rows_term(SP);
      }
  #endif
  
    PDC_LOG(("PDC_get_rows() - called\n"));
  
    DEBUGASSERT(fbscreen != NULL);
    fbstate = &fbscreen->fbstate;
  
    return fbstate->yres / fbstate->fheight;
  }
  
  /****************************************************************************
   * Name: PDC_get_columns
   *
   * Description:
   *   Returns the size of the screen in columns. It's used in resize_term()
   *   to set the new value of COLS. (Some existing implementations also call
   *   it internally from PDC_scr_open(), but this is not required.)
   *
   ****************************************************************************/
  
  int PDC_get_columns(void)
  {
  #ifdef CONFIG_PDCURSES_MULTITHREAD
    FAR struct pdc_context_s *ctx = PDC_ctx();
  #endif
    FAR struct pdc_fbscreen_s *fbscreen = (FAR struct pdc_fbscreen_s *)SP;
    FAR struct pdc_fbstate_s *fbstate;
  
    PDC_LOG(("PDC_get_columns() - called\n"));
  
  #ifdef CONFIG_SYSTEM_TERMCURSES
    if (!graphic_screen)
      {
         /* Call termcurses version of PDC_get_cols */
  
         return PDC_get_columns_term(SP);
      }
  #endif
  
    DEBUGASSERT(fbscreen != NULL);
    fbstate = &fbscreen->fbstate;
  
    return fbstate->xres / fbstate->fwidth;
  }
  
  /****************************************************************************
   * Name: PDC_get_cursor_mode
   *
   * Description:
   *   Returns the size/shape of the cursor. The format of the result is
   *   unspecified, except that it must be returned as an int. This function
   *   is called from initscr(), and the result is stored in SP->orig_cursor,
   *   which is used by PDC_curs_set() to determine the size/shape of the
   *   cursor in normal visibility mode (curs_set(1)).
   *
   ****************************************************************************/
  
  int PDC_get_cursor_mode(void)
  {
    PDC_LOG(("PDC_get_cursor_mode() - called\n"));
    return 0;
  }
  