NetBSD/lib/libcurses/mouse.c

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/* $NetBSD: mouse.c,v 1.1 2020/03/23 13:37:36 roy Exp $ */
/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roy Marples.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: mouse.c,v 1.1 2020/03/23 13:37:36 roy Exp $");
#endif /* not lint */
#include "curses.h"
#include "curses_private.h"
#define DEFAULT_MAXCLICK 166 /* ncurses default */
/*
* Return true if screen relative y and x are enclosed by the window.
*/
bool
wenclose(const WINDOW *win, int y, int x)
{
if (y < win->begy || y > win->begy + win->maxy ||
x < win->begx || x > win->begx + win->maxx)
return false;
return true;
}
bool
mouse_trafo(int *y, int *x, bool to_screen)
{
return wmouse_trafo(stdscr, y, x, to_screen);
}
/*
* Transform y and x from screen relative to window relative
*/
bool wmouse_trafo(const WINDOW *win, int *y, int *x, bool to_screen)
{
int wy = *y, wx = *x;
if (to_screen) {
wy += win->begy;
wx += win->begx;
}
if (!wenclose(win, wy, wx))
return false;
if (!to_screen) {
wy -= win->begy;
wx -= win->begx;
}
*y = wy;
*x = wx;
return true;
}
/*
* The below functions actually need some kind of mouse support.
* We should look into wsmouse(4) support at least as well as xterm.
*/
bool
has_mouse(void)
{
return false;
}
int
getmouse(__unused MEVENT *event)
{
return ERR;
}
int
ungetmouse(__unused MEVENT *event)
{
return ERR;
}
mmask_t
mousemask(__unused mmask_t newmask, __unused mmask_t *oldmask)
{
return 0;
}
int
mouseinterval(__unused int erval)
{
return DEFAULT_MAXCLICK;
}