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OS/2 Shareware BBS: 6 File
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mc454src.zip
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mc-4.5.4.src
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mc-4.5.4
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mouse.c
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C/C++ Source or Header
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1999-01-04
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6KB
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280 lines
/* Mouse managing
Copyright (C) 1994 Miguel de Icaza.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Events received by clients of this library have their coordinates 0 */
/* based */
/* "$Id: mouse.c,v 1.2 1998/05/20 02:20:18 unammx Exp $" */
#include <config.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <signal.h> /* For kill() and SIGQUIT */
#include <fcntl.h>
#if (!defined(__IBMC__) && !defined(__IBMCPP__)) && !defined(OS2_NT)
# include <termios.h>
#endif
#include <malloc.h>
#include <stdio.h>
#include "mad.h"
#include "mouse.h"
#include "global.h" /* ESC_STR */
#include "util.h" /* xmalloc */
#include "key.h" /* define sequence */
#include "tty.h" /* get ncurses header */
int xmouse_flag = 0;
/*
* This chunk of NCURSES internals is used to support the keyok() function for
* NCURSES versions between 1.9.6 (when the mouse code was introduced in 1995),
* and 4.2 (when the keyok function will be release).
*/
#ifndef HAVE_KEYOK
#ifdef NCURSES_MOUSE_VERSION /* first defined for ncurses 1.9.6 */
#ifdef NCURSES_970530 /* defined by configure script */
/*
* ncurses 1.9.8a ported to QNX doesn't provide the SP pointer as a global
* symbol in the library...
*/
#ifndef __QNX__
struct tries {
struct tries *child;
struct tries *sibling;
unsigned char ch;
unsigned short value;
};
struct screen {
int _ifd;
FILE *_ofp;
#if NCURSES_970530 >= 2
char *_setbuf; /*4.0*/
#endif
int _checkfd;
struct term *_term;
short _lines;
short _columns;
#if NCURSES_970530 >= 1
short _lines_avail; /*1.9.9g*/
short _topstolen; /*1.9.9g*/
#endif
struct _win_st *_curscr;
struct _win_st *_newscr;
struct _win_st *_stdscr;
struct tries *_keytry; /* "Try" for use with keypad mode */
/* there's more, but this is just for alignment */
};
extern struct screen *SP;
/*
* Remove a code from the specified tree, freeing the unused nodes. Returns
* true if the code was found/removed.
*/
static
int _nc_remove_key(struct tries **tree, unsigned short code)
{
struct tries *ptr = (*tree);
if (code > 0) {
while (ptr != 0) {
if (_nc_remove_key(&(ptr->child), code)) {
return TRUE;
}
if (ptr->value == code) {
*tree = 0;
free(ptr);
return TRUE;
}
ptr = ptr->sibling;
}
}
return FALSE;
}
int
keyok(int code, bool flag)
{
_nc_remove_key(&(SP->_keytry), code);
return OK;
}
#endif /* __QNX__ */
#endif /* NCURSES_970530 */
#endif /* NCURSES_MOUSE_VERSION */
#endif /* HAVE_KEYOK */
#ifdef HAVE_LIBGPM
static int mouse_d; /* Handle to the mouse server */
#endif
#ifdef DEBUGMOUSE
/* Only used for debugging */
static int top_event = 0;
FILE *log;
#endif
#ifdef HAVE_LIBGPM
void show_mouse_pointer (int x, int y)
{
#ifdef HAVE_LIBGPM
if (use_mouse_p == GPM_MOUSE){
Gpm_DrawPointer (x, y, gpm_consolefd);
}
#endif
}
#endif /* HAVE_LIBGPM */
#if 0
int mouse_handler (Gpm_Event *gpm_event)
{
MouseEvent *event = mouse_events;
int x = last_x = gpm_event->x;
int y = last_y = gpm_event->y;
int redo = 0;
/* DEBUGM ((log, "Mouse [%d, %d]\n", x, y)); */
/* Call any registered event handlers */
for (; event; event = (MouseEvent *) event->next){
if ((event->x1 <= x) && (x <= event->x2)
&& (event->y1 <= y) && (y <= event->y2)){
gpm_event->x -= event->x1;
gpm_event->y -= event->y1;
last_mouse_event = event;
redo = (*(event->mouse_callback))(gpm_event, event->data);
gpm_event->x += event->x1;
gpm_event->y += event->y1;
break;
}
}
return redo;
}
int redo_mouse (Gpm_Event *event)
{
if (last_mouse_event){
int result;
event->x -= last_mouse_event->x1;
event->y -= last_mouse_event->y1;
result = (*(last_mouse_event->mouse_callback))
(event,last_mouse_event->data);
event->x += last_mouse_event->x1;
event->y += last_mouse_event->y1;
return result;
}
return MOU_NORMAL;
}
#endif
void init_mouse (void)
{
/*
* MC's use of xterm mouse is incompatible with NCURSES's support. The
* simplest solution is to disable NCURSE's mouse.
*/
#ifdef NCURSES_MOUSE_VERSION
/* See the comment above about QNX/ncurses 1.9.8a ... */
#ifndef __QNX__
keyok(KEY_MOUSE, FALSE);
#endif /* __QNX__ */
#endif /* NCURSES_MOUSE_VERSION */
#if defined(NCURSES_970530)
#endif
switch (use_mouse_p)
{
#ifdef HAVE_LIBGPM
case GPM_MOUSE:
{
Gpm_Connect conn;
conn.eventMask = ~GPM_MOVE;
conn.defaultMask = GPM_MOVE;
conn.minMod = 0;
conn.maxMod = 0;
if ((mouse_d = Gpm_Open (&conn, 0)) == -1)
return;
#ifdef DEBUGMOUSE
log = fopen ("mouse.log", "w");
#endif
}
break;
#endif /* HAVE_LIBGPM */
case XTERM_MOUSE:
if (!xmouse_flag) {
/* save old highlight mouse tracking */
printf("%c[?1001s",27);
/* enable mouse tracking */
printf("%c[?1000h",27);
fflush (stdout);
/* turn on */
xmouse_flag = 1;
define_sequence (MCKEY_MOUSE, ESC_STR "[M", MCKEY_NOACTION);
}
break;
default:
/* nothing */
break;
} /* switch (use_mouse_p) */
}
void shut_mouse (void)
{
switch (use_mouse_p){
#ifdef HAVE_LIBGPM
case GPM_MOUSE:
Gpm_Close ();
break;
#endif
case XTERM_MOUSE:
if (xmouse_flag) {
/* disable mouse tracking */
/* Changed the 1 for an 'l' below: */
printf("%c[?1000l",27);
/* restore old highlight mouse tracking */
printf("%c[?1001r",27);
fflush (stdout);
/* off */
xmouse_flag = 0;
}
break;
default:
/* nothing */
break;
}
}
#ifdef DEBUGMOUSE
void mouse_log (char *function, char *file, int line)
{
fprintf (log, "%s called from %s:%d\n", function, file, line);
}
#endif