kc3-lang/SDL/src/core/openbsd/SDL_wscons_mouse.c

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• Hash : bf97c5a2
  Author :
  Date : 2021-09-08T14:47:40
  

  Make sure SDL file descriptors don't leak into child processes
  

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• src/core/openbsd/SDL_wscons_mouse.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  
  #include "../../SDL_internal.h"
  #include "SDL_events.h"
  #include <sys/time.h>
  #include <dev/wscons/wsconsio.h>
  #include <unistd.h>
  #include <sys/ioctl.h>
  #include <stdlib.h>
  #include <fcntl.h>
  
  #include "../../events/SDL_mouse_c.h"
  
  typedef struct SDL_WSCONS_mouse_input_data
  {
      int fd;
  } SDL_WSCONS_mouse_input_data;
  
  SDL_WSCONS_mouse_input_data* SDL_WSCONS_Init_Mouse()
  {
  #ifdef WSMOUSEIO_SETVERSION
      int version = WSMOUSE_EVENT_VERSION;
  #endif
      SDL_WSCONS_mouse_input_data* mouseInputData = SDL_calloc(1, sizeof(SDL_WSCONS_mouse_input_data));
  
      if (!mouseInputData) return NULL;
      mouseInputData->fd = open("/dev/wsmouse",O_RDWR | O_NONBLOCK | O_CLOEXEC);
      if (mouseInputData->fd == -1) {free(mouseInputData); return NULL; }
  #ifdef WSMOUSEIO_SETMODE
      ioctl(mouseInputData->fd, WSMOUSEIO_SETMODE, WSMOUSE_COMPAT);
  #endif
  #ifdef WSMOUSEIO_SETVERSION
      ioctl(mouseInputData->fd, WSMOUSEIO_SETVERSION, &version);
  #endif
      return mouseInputData;
  }
  
  void updateMouse(SDL_WSCONS_mouse_input_data* inputData)
  {
      struct wscons_event events[64];
      int type;
      int n,i;
      SDL_Mouse* mouse = SDL_GetMouse();
  
      if ((n = read(inputData->fd, events, sizeof(events))) > 0)
      {
          n /= sizeof(struct wscons_event);
          for (i = 0; i < n; i++)
          {
              type = events[i].type;
              switch(type)
              {
              case WSCONS_EVENT_MOUSE_DOWN:
                  {
                      switch (events[i].value)
                      {
                      case 0: /* Left Mouse Button. */
                          SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_PRESSED, SDL_BUTTON_LEFT);
                          break;
                      case 1: /* Middle Mouse Button. */
                          SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_PRESSED, SDL_BUTTON_MIDDLE);
                          break;
                      case 2: /* Right Mouse Button. */
                          SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_PRESSED, SDL_BUTTON_RIGHT);
                          break;
                      }
                  }
                  break;
              case WSCONS_EVENT_MOUSE_UP:
                  {
                      switch (events[i].value)
                      {
                      case 0: /* Left Mouse Button. */
                          SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, SDL_BUTTON_LEFT);
                          break;
                      case 1: /* Middle Mouse Button. */
                          SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, SDL_BUTTON_MIDDLE);
                          break;
                      case 2: /* Right Mouse Button. */
                          SDL_SendMouseButton(mouse->focus, mouse->mouseID, SDL_RELEASED, SDL_BUTTON_RIGHT);
                          break;
                      }
                  }
                  break;
              case WSCONS_EVENT_MOUSE_DELTA_X:
                  {
                      SDL_SendMouseMotion(mouse->focus, mouse->mouseID, 1, events[i].value, 0);
                      break;
                  }
              case WSCONS_EVENT_MOUSE_DELTA_Y:
                  {
                      SDL_SendMouseMotion(mouse->focus, mouse->mouseID, 1, 0, -events[i].value);
                      break;
                  }
              case WSCONS_EVENT_MOUSE_DELTA_W:
                  {
                      SDL_SendMouseWheel(mouse->focus, mouse->mouseID, events[i].value, 0, SDL_MOUSEWHEEL_NORMAL);
                      break;
                  }
              case WSCONS_EVENT_MOUSE_DELTA_Z:
                  {
                      SDL_SendMouseWheel(mouse->focus, mouse->mouseID, 0, -events[i].value, SDL_MOUSEWHEEL_NORMAL);
                      break;
                  }
              }
          }
      }
  }
  
  void SDL_WSCONS_Quit_Mouse(SDL_WSCONS_mouse_input_data* inputData)
  {
      if (!inputData) return;
      close(inputData->fd);
      free(inputData);
  }
  

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