ref: 83d4cf3fd1a257df21468f5bb3b4329e5cf8a40f
dir: /u/in_sun.c/
/*
Copyright (C) 1996-1997 Id Software, Inc.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// in_sun.c -- SUN/X mouse input handler
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include "quakedef.h"
//
// typedefs and defines
//
#define MOUSE_SCALE 4
//
// externs
//
extern Display *x_disp;
extern int x_screen, x_screen_width, x_screen_height;
extern int x_center_height, x_center_width;
extern int x_std_event_mask;
extern Window x_win, x_root_win;
extern qboolean x_fullscreen;
extern qboolean x_focus;
extern int global_dx, global_dy;
//
// globals
//
cvar_t _windowed_mouse = {"_windowed_mouse","1", true};
int x_root, y_root;
int x_root_old, y_root_old;
//
// locals
//
static int x_mouse_num, x_mouse_denom, x_mouse_thresh;
static qboolean x_grabbed = false;
//
// IN_CenterMouse - center the mouse in the screen
//
void IN_CenterMouse( void )
{
CheckMouseState();
if (!x_grabbed)
return;
XSelectInput( x_disp, x_win, x_std_event_mask & ~PointerMotionMask );
XWarpPointer( x_disp, None, x_root_win, 0, 0, 0, 0, x_center_width,
x_center_height );
XSelectInput( x_disp, x_win, x_std_event_mask );
}
//
// Check to see if we have grabbed the mouse or not and deal with it
// appropriately
//
static void CheckMouseState(void)
{
if (x_focus && _windowed_mouse.value && !x_grabbed) {
x_grabbed = true;
printf("fooling with mouse!\n");
if (XGetPointerControl( x_disp, &x_mouse_num, &x_mouse_denom, &x_mouse_thresh ))
printf( "XGetPointerControl failed!\n" );
//printf( "mouse %d/%d thresh %d\n", x_mouse_num, x_mouse_denom, x_mouse_thresh );
// make input rawer
XAutoRepeatOff(x_disp);
XGrabKeyboard(x_disp, x_win, True, GrabModeAsync, GrabModeAsync, CurrentTime);
XGrabPointer(x_disp, x_win, True,
PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
// if (XChangePointerControl( x_disp, True, True, 1, MOUSE_SCALE, x_mouse_thresh ))
// printf( "XChangePointerControl failed!\n" );
IN_CenterMouse();
// safe initial values
x_root = x_root_old = vid.width >> 1;
y_root = y_root_old = vid.height >> 1;
} else if (x_grabbed && (!_windowed_mouse.value || !x_focus)) {
printf("fooling with mouse!\n");
x_grabbed = false;
// undo mouse warp
if (XChangePointerControl( x_disp, True, True, x_mouse_num, x_mouse_denom, x_mouse_thresh ))
printf( "XChangePointerControl failed!\n" );
XUngrabPointer( x_disp, CurrentTime );
XUngrabKeyboard( x_disp, CurrentTime );
XAutoRepeatOn( x_disp );
}
}
//
// IN_Init - setup mouse input
//
void IN_Init (void)
{
if (!x_disp) Sys_Error( "X display not open!\n" );
Cvar_RegisterVariable (&_windowed_mouse);
// we really really want to clean these up...
atexit( IN_Shutdown );
}
//
// IN_Shutdown - clean up mouse settings (must be done from signal handler too!)
//
void IN_Shutdown (void)
{
if (!x_disp) return;
// undo mouse warp
if (XChangePointerControl( x_disp, True, True, x_mouse_num, x_mouse_denom, x_mouse_thresh ))
printf( "XChangePointerControl failed!\n" );
XUngrabPointer( x_disp, CurrentTime );
XUngrabKeyboard( x_disp, CurrentTime );
XAutoRepeatOn( x_disp );
}
//
// IN_Commands - process buttons
//
void IN_Commands (void)
{
// done in X event handler
}
//
// IN_Move - process mouse moves
//
void
IN_Move (usercmd_t *cmd)
{
static int last_dx, last_dy;
static long long last_movement;
long long now, gethrtime();
int dx, dy;
CheckMouseState();
if (!x_grabbed)
return; // no mouse movement
now = gethrtime();
dx = global_dx;
global_dx = 0;
dy = global_dy;
global_dy = 0;
// printf("GOT: dx %d dy %d\n", dx, dy);
dx *= sensitivity.value;
dy *= sensitivity.value;
//
// implement low pass filter to smooth motion a bit
//
if (now - last_movement > 100000000) {
dx = .6 * dx;
dy = .6 * dy;
}
last_movement = now;
dx = .6 * dx + .4 * last_dx;
dy = .6 * dy + .4 * last_dy;
last_dx = dx;
last_dy = dy;
if (!dx && !dy) {
if (in_mlook.state & 1)
V_StopPitchDrift ();
return;
}
// add mouse X/Y movement to cmd
if ((in_strafe.state & 1) || (lookstrafe.value && (in_mlook.state & 1)))
cmd->sidemove += m_side.value * dx;
else
cl.viewangles[YAW] -= m_yaw.value * dx;
if (in_mlook.state & 1)
V_StopPitchDrift ();
if ((in_mlook.state & 1) && !(in_strafe.state & 1)) {
cl.viewangles[PITCH] += m_pitch.value * dy;
if (cl.viewangles[PITCH] > 80) cl.viewangles[PITCH] = 80;
if (cl.viewangles[PITCH] < -70) cl.viewangles[PITCH] = -70;
}
else {
if ((in_strafe.state & 1) && noclip_anglehack) cmd->upmove -= m_forward.value * dy;
else cmd->forwardmove -= m_forward.value * dy;
}
}