SDL-1.2/src/video/fbcon/SDL_fbelo.h

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997-2006 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
  24 #ifndef SDL_fbelo_h
  25 #define SDL_fbelo_h
  26
  27 #include "SDL_fbvideo.h"
  28
  29 /* ELO */
  30 #define ELO_PACKET_SIZE 10
  31 #define ELO_START_BYTE          'U'
  32
  33 /*      eloConvertXY
  34         Convert the raw coordinates from the ELO controller
  35         to a screen position.
  36 */
  37 void eloConvertXY(_THIS, int *dx,  int *dy);
  38
  39 /*      eloInitController(int fd)
  40         Initialize the ELO serial touchscreen controller
  41 */
  42 int eloInitController(int fd);
  43
  44 /*      eloParsePacket
  45         extract position and button state from a packet
  46 */
  47 int eloParsePacket(unsigned char* mousebuf, int* dx, int* dy, int* button_state);
  48
  49 /*      eloReadPosition
  50         read a packet and get the cursor position
  51 */
  52
  53 int eloReadPosition(_THIS, int fd, int* x, int* y, int* button_state, int* realx, int* realy);
  54
  55 #endif  /* SDL_fbelo_h */