/* setwaitpointer.c
 * Copyright (C) 1990, 1991 Commodore-Amiga, Inc.
 * Written by David N. Junod
 *
 */

static UWORD chip WaitPointer[] =
{
    0x0000, 0x0000,

    0x0400, 0x07C0,
    0x0000, 0x07C0,
    0x0100, 0x0380,
    0x0000, 0x07E0,
    0x07C0, 0x1FF8,
    0x1FF0, 0x3FEC,
    0x3FF8, 0x7FDE,
    0x3FF8, 0x7FBE,
    0x7FFC, 0xFF7F,
    0x7EFC, 0xFFFF,
    0x7FFC, 0xFFFF,
    0x3FF8, 0x7FFE,
    0x3FF8, 0x7FFE,
    0x1FF0, 0x3FFC,
    0x07C0, 0x1FF8,
    0x0000, 0x07E0,

    0x0000, 0x0000,		/* reserved, must be NULL */
};

/* This function sets the busy pointer in the specified window */
VOID SetWaitPointer (struct Window * w)
{

    if (w)
    {
	SetPointer (w, WaitPointer, 16, 16, -6, 0);
    }
}

/* This function sets the busy pointer, and locks the gadgets for the
 * specified window.
 *
 * Example:
 *
 *    VOID DoSomethingLong (struct Window *w)
 *    {
 *        struct Requester r;
 *
 *        LockWindow (w, &r);
 *
 *        ... do the work ...
 *
 *        UnlockWindow (w, &r);
 *    }
 *
 */

static struct Requester r;

VOID LockWindow (struct Window *w)
{
    /* Make sure we have a window */
    if (w)
    {
	/* Set the wait pointer */
	SetWaitPointer (w);

            InitRequester (&r);

            r.LeftEdge = r.TopEdge = (-1);
            r.Width = r.Height = 1;
            r.Flags = SIMPLEREQ | NOREQBACKFILL;

            Request (&r, w);
    }
}

VOID UnlockWindow (struct Window *w)
{
    /* Make sure we have a window */
    if (w)
    {
	    EndRequest (&r, w);

	/* Turn off the busy pointer */
	ClearPointer (w);
    }
}