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annotate src/video/x11/SDL_eventtouch.c @ 4645:0375d020e7e3

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