Mercurial > sdl-ios-xcode
comparison src/video/x11/SDL_eventtouch.c @ 4645:0375d020e7e3
Auto-detects Wacom touch devices.
author | Jim Grandpre <jim.tla@gmail.com> |
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date | Mon, 31 May 2010 00:24:37 -0400 |
parents | |
children | eea1bf53effa |
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4644:fb500b3e1717 | 4645:0375d020e7e3 |
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1 /* | |
2 SDL - Simple DirectMedia Layer | |
3 Copyright (C) 1997-2010 Sam Lantinga | |
4 | |
5 This library is free software; you can redistribute it and/or | |
6 modify it under the terms of the GNU Lesser General Public | |
7 License as published by the Free Software Foundation; either | |
8 version 2.1 of the License, or (at your option) any later version. | |
9 | |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 Lesser General Public License for more details. | |
14 | |
15 You should have received a copy of the GNU Lesser General Public | |
16 License along with this library; if not, write to the Free Software | |
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | |
19 Sam Lantinga | |
20 slouken@libsdl.org | |
21 */ | |
22 #include "SDL_config.h" | |
23 #include "SDL_x11video.h" | |
24 #include "SDL_eventtouch.h" | |
25 #include "../../events/SDL_touch_c.h" | |
26 | |
27 #include <linux/input.h> | |
28 #include <fcntl.h> | |
29 | |
30 void | |
31 X11_InitTouch(_THIS) | |
32 { | |
33 printf("Initializing touch...\n"); | |
34 | |
35 FILE *fd; | |
36 fd = fopen("/proc/bus/input/devices","r"); | |
37 | |
38 char c; | |
39 int i = 0; | |
40 char line[256]; | |
41 char tstr[256]; | |
42 int vendor = -1,product = -1,event = -1; | |
43 while(!feof(fd)) { | |
44 if(fgets(line,256,fd) <=0) continue; | |
45 //printf("%s",line); | |
46 if(line[0] == '\n') { | |
47 if(vendor == 1386){ | |
48 printf("Wacom... Assuming it is a touch device\n"); | |
49 sprintf(tstr,"/dev/input/event%i",event); | |
50 printf("At location: %s\n",tstr); | |
51 | |
52 SDL_Touch touch; | |
53 touch.pressure_max = 0; | |
54 touch.pressure_min = 0; | |
55 touch.id = event; | |
56 | |
57 | |
58 | |
59 touch.driverdata = SDL_malloc(sizeof(EventTouchData)); | |
60 EventTouchData* data = (EventTouchData*)(touch.driverdata); | |
61 printf("Opening device...\n"); | |
62 //printf("New Touch - DataPtr: %i\n",data); | |
63 data->eventStream = open(tstr, | |
64 O_RDONLY | O_NONBLOCK); | |
65 ioctl (data->eventStream, EVIOCGNAME (sizeof (tstr)), tstr); | |
66 printf ("Reading From : %s\n", tstr); | |
67 SDL_AddTouch(&touch, tstr); | |
68 | |
69 } | |
70 vendor = -1; | |
71 product = -1; | |
72 event = -1; | |
73 } | |
74 else if(line[0] == 'I') { | |
75 i = 1; | |
76 while(line[i]) { | |
77 sscanf(&line[i],"Vendor=%x",&vendor); | |
78 sscanf(&line[i],"Product=%x",&product); | |
79 i++; | |
80 } | |
81 } | |
82 else if(line[0] == 'H') { | |
83 i = 1; | |
84 while(line[i]) { | |
85 sscanf(&line[i],"event%d",&event); | |
86 i++; | |
87 } | |
88 } | |
89 } | |
90 | |
91 close(fd); | |
92 } | |
93 | |
94 void | |
95 X11_QuitTouch(_THIS) | |
96 { | |
97 SDL_TouchQuit(); | |
98 } | |
99 | |
100 /* vi: set ts=4 sw=4 expandtab: */ |