/
SDL_ataridevmouse.c
159 lines (125 loc) · 3.04 KB
/
SDL_ataridevmouse.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2009 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
/*
MiNT /dev/mouse driver
Patrice Mandin
*/
#include <fcntl.h>
#include <unistd.h>
#include "../../events/SDL_events_c.h"
#include "SDL_ataridevmouse_c.h"
/* Defines */
#define DEVICE_NAME "/dev/mouse"
/* Local variables */
static int handle = -1;
static int mouseb, prev_mouseb;
/* Functions */
int SDL_AtariDevMouse_Open(void)
{
int r;
const char *mousedev;
/*
TODO: Fix the MiNT device driver, that locks mouse for other
applications, so this is disabled till fixed
*/
return 0;
/* First, try SDL_MOUSEDEV device */
mousedev = SDL_getenv("SDL_MOUSEDEV");
if (!mousedev) {
handle = open(mousedev, 0);
}
/* Failed, try default device */
if (handle<0) {
handle = open(DEVICE_NAME, 0);
}
if (handle<0) {
handle = -1;
return 0;
}
/* Set non blocking mode */
r = fcntl(handle, F_GETFL, 0);
if (r<0) {
close(handle);
handle = -1;
return 0;
}
r |= O_NDELAY;
r = fcntl(handle, F_SETFL, r);
if (r<0) {
close(handle);
handle = -1;
return 0;
}
prev_mouseb = 7;
return 1;
}
void SDL_AtariDevMouse_Close(void)
{
if (handle>0) {
close(handle);
handle = -1;
}
}
static int atari_GetButton(int button)
{
switch(button)
{
case 0:
return SDL_BUTTON_RIGHT;
case 1:
return SDL_BUTTON_MIDDLE;
default:
break;
}
return SDL_BUTTON_LEFT;
}
void SDL_AtariDevMouse_PostMouseEvents(_THIS, SDL_bool buttonEvents)
{
unsigned char buffer[3];
int mousex, mousey;
if (handle<0) {
return;
}
mousex = mousey = 0;
while (read(handle, buffer, sizeof(buffer))==sizeof(buffer)) {
mouseb = buffer[0] & 7;
mousex += (char) buffer[1];
mousey += (char) buffer[2];
/* Mouse button events */
if (buttonEvents && (mouseb != prev_mouseb)) {
int i;
for (i=0;i<3;i++) {
int curbutton, prevbutton;
curbutton = mouseb & (1<<i);
prevbutton = prev_mouseb & (1<<i);
if (curbutton && !prevbutton) {
SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
}
if (!curbutton && prevbutton) {
SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
}
}
prev_mouseb = mouseb;
}
}
/* Mouse motion event */
if (mousex || mousey) {
SDL_PrivateMouseMotion(0, 1, mousex, -mousey);
}
}