Mercurial > sdl-ios-xcode
diff src/video/ataricommon/SDL_ataridevmouse.c @ 1420:2405517b5eab
Added preliminary support for MiNT /dev/mouse driver (disabled atm)
author | Patrice Mandin <patmandin@gmail.com> |
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date | Thu, 23 Feb 2006 21:51:10 +0000 |
parents | |
children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/video/ataricommon/SDL_ataridevmouse.c Thu Feb 23 21:51:10 2006 +0000 @@ -0,0 +1,159 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2006 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); + } +}