copy the apple_mouse_noaccel hack into vid_sdl too

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10579 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/vid_sdl.c b/vid_sdl.c
index 9618cb611d2ebcd80884afe8fa10bc9e785c96d5..1387e69b7dc359cf7046da3152b3469ae8d46859 100644 (file)
--- a/vid_sdl.c
+++ b/vid_sdl.c
@@ -24,6 +24,36 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "quakedef.h"
 #include "image.h"
 
+#ifdef MACOSX
+#include <Carbon/Carbon.h>
+#include <IOKit/hidsystem/IOHIDLib.h>
+#include <IOKit/hidsystem/IOHIDParameter.h>
+#include <IOKit/hidsystem/event_status_driver.h>
+static cvar_t apple_mouse_noaccel = {CVAR_SAVE, "apple_mouse_noaccel", "1", "disables mouse acceleration while DarkPlaces is active"};
+static qboolean vid_usingnoaccel;
+static double originalMouseSpeed = -1.0;
+io_connect_t IN_GetIOHandle(void)
+{
+       io_connect_t iohandle = MACH_PORT_NULL;
+       kern_return_t status;
+       io_service_t iohidsystem = MACH_PORT_NULL;
+       mach_port_t masterport;
+
+       status = IOMasterPort(MACH_PORT_NULL, &masterport);
+       if(status != KERN_SUCCESS)
+               return 0;
+
+       iohidsystem = IORegistryEntryFromPath(masterport, kIOServicePlane ":/IOResources/IOHIDSystem");
+       if(!iohidsystem)
+               return 0;
+
+       status = IOServiceOpen(iohidsystem, mach_task_self(), kIOHIDParamConnectType, &iohandle);
+       IOObjectRelease(iohidsystem);
+
+       return iohandle;
+}
+#endif
+
 #ifdef WIN32
 #define SDL_R_RESTART
 #endif
@@ -241,11 +271,68 @@ static int MapKey( unsigned int sdlkey )
 
 void VID_SetMouse(qboolean fullscreengrab, qboolean relative, qboolean hidecursor)
 {
+#ifdef MACOSX
+       if(relative)
+               if(vid_usingmouse && (vid_usingnoaccel != !!apple_mouse_noaccel.integer))
+                       VID_SetMouse(false, false, false); // ungrab first!
+#endif
        if (vid_usingmouse != relative)
        {
                vid_usingmouse = relative;
                cl_ignoremousemoves = 2;
                SDL_WM_GrabInput( relative ? SDL_GRAB_ON : SDL_GRAB_OFF );
+#ifdef MACOSX
+               if(relative)
+               {
+                       // Save the status of mouse acceleration
+                       originalMouseSpeed = -1.0; // in case of error
+                       if(apple_mouse_noaccel.integer)
+                       {
+                               io_connect_t mouseDev = IN_GetIOHandle();
+                               if(mouseDev != 0)
+                               {
+                                       if(IOHIDGetAccelerationWithKey(mouseDev, CFSTR(kIOHIDMouseAccelerationType), &originalMouseSpeed) == kIOReturnSuccess)
+                                       {
+                                               Con_DPrintf("previous mouse acceleration: %f\n", originalMouseSpeed);
+                                               if(IOHIDSetAccelerationWithKey(mouseDev, CFSTR(kIOHIDMouseAccelerationType), -1.0) != kIOReturnSuccess)
+                                               {
+                                                       Con_Print("Could not disable mouse acceleration (failed at IOHIDSetAccelerationWithKey).\n");
+                                                       Cvar_SetValueQuick(&apple_mouse_noaccel, 0);
+                                               }
+                                       }
+                                       else
+                                       {
+                                               Con_Print("Could not disable mouse acceleration (failed at IOHIDGetAccelerationWithKey).\n");
+                                               Cvar_SetValueQuick(&apple_mouse_noaccel, 0);
+                                       }
+                                       IOServiceClose(mouseDev);
+                               }
+                               else
+                               {
+                                       Con_Print("Could not disable mouse acceleration (failed at IO_GetIOHandle).\n");
+                                       Cvar_SetValueQuick(&apple_mouse_noaccel, 0);
+                               }
+                       }
+
+                       vid_usingnoaccel = !!apple_mouse_noaccel.integer;
+               }
+               else
+               {
+                       if(originalMouseSpeed != -1.0)
+                       {
+                               io_connect_t mouseDev = IN_GetIOHandle();
+                               if(mouseDev != 0)
+                               {
+                                       Con_DPrintf("restoring mouse acceleration to: %f\n", originalMouseSpeed);
+                                       if(IOHIDSetAccelerationWithKey(mouseDev, CFSTR(kIOHIDMouseAccelerationType), originalMouseSpeed) != kIOReturnSuccess)
+                                               Con_Print("Could not re-enable mouse acceleration (failed at IOHIDSetAccelerationWithKey).\n");
+                                       IOServiceClose(mouseDev);
+                               }
+                               else
+                                       Con_Print("Could not re-enable mouse acceleration (failed at IO_GetIOHandle).\n");
+                       }
+               }
+#endif
        }
        if (vid_usinghidecursor != hidecursor)
        {
@@ -467,6 +554,9 @@ static qboolean vid_sdl_initjoysticksystem = false;
 
 void VID_Init (void)
 {
+#ifdef MACOSX
+       Cvar_RegisterVariable(&apple_mouse_noaccel);
+#endif
        Cvar_RegisterVariable(&joy_detected);
        Cvar_RegisterVariable(&joy_enable);
        Cvar_RegisterVariable(&joy_index);