pdcurses-sys 0.7.1

FFI bindings for PDCurses, specifically the win32a implementation.
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/* Public Domain Curses */

#include "pdcos2.h"

/*man-start**************************************************************

pdcsetsc
--------

### Synopsis

    int PDC_set_blink(bool blinkon);
    void PDC_set_title(const char *title);

### Description

   PDC_set_blink() toggles whether the A_BLINK attribute sets an
   actual blink mode (TRUE), or sets the background color to high
   intensity (FALSE). The default is platform-dependent (FALSE in
   most cases). It returns OK if it could set the state to match
   the given parameter, ERR otherwise. Current platforms also
   adjust the value of COLORS according to this function -- 16 for
   FALSE, and 8 for TRUE.

   PDC_set_title() sets the title of the window in which the curses
   program is running. This function may not do anything on some
   platforms. (Currently it only works in Win32 and X11.)

### Portability
                             X/Open    BSD    SYS V
    PDC_set_blink               -       -       -
    PDC_set_title               -       -       -

**man-end****************************************************************/

int PDC_curs_set(int visibility)
{
#ifndef EMXVIDEO
    VIOCURSORINFO pvioCursorInfo;
#endif
    int ret_vis, hidden = 0, start = 0, end = 0;

    PDC_LOG(("PDC_curs_set() - called: visibility=%d\n", visibility));

    ret_vis = SP->visibility;
    SP->visibility = visibility;

    switch(visibility)
    {
    case 0:     /* invisible */
#ifdef EMXVIDEO
        start = end = 0;
#else
        start = pdc_font / 4;
        end = pdc_font;
        hidden = -1;
#endif
        break;

    case 2:     /* highly visible */
        start = 2;      /* almost full-height block */
        end = pdc_font - 1;
        break;

    default:    /* normal visibility */
        start = (SP->orig_cursor >> 8) & 0xff;
        end = SP->orig_cursor & 0xff;
    }

#ifdef EMXVIDEO
    if (!visibility)
        v_hidecursor();
    else
        v_ctype(start, end);
#else
    pvioCursorInfo.yStart = (USHORT)start;
    pvioCursorInfo.cEnd = (USHORT)end;
    pvioCursorInfo.cx = (USHORT)1;
    pvioCursorInfo.attr = hidden;
    VioSetCurType((PVIOCURSORINFO)&pvioCursorInfo, 0);
#endif
    return ret_vis;
}

void PDC_set_title(const char *title)
{
    PDC_LOG(("PDC_set_title() - called:<%s>\n", title));
}

int PDC_set_blink(bool blinkon)
{
#ifndef EMXVIDEO
    USHORT statebuf[3], result;

    statebuf[0] = 6;    /* length */
    statebuf[1] = 2;    /* blink/intensity */
    statebuf[2] = !blinkon;

    result = VioSetState(&statebuf, 0);
    VioGetState(&statebuf, 0);  /* needed? */

    if (pdc_color_started)
        COLORS = statebuf[2] ? 16 : 8;

    return (result == 0) ? OK : ERR;
#else
    if (pdc_color_started)
        COLORS = 16;

    return blinkon ? ERR : OK;
#endif
}