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   1 /*
   2  * fg_spaceball_mswin.c
   3  *
   4  * Spaceball support for Windows
   5  *
   6  * Copyright (c) 2012 Stephen J. Baker. All Rights Reserved.
   7  * Written by Evan Felix <karcaw at gmail.com>
   8  * Creation date: Sat Feb 4, 2012
   9  *
  10  * Copyright (c) 2014 Jinrong Xie. All Rights Reserved.
  11  * Written by Jinrong Xie <stonexjr at gmail.com>
  12  * Modification date: Wed Dec 24, 2014
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the "Software"),
  16  * to deal in the Software without restriction, including without limitation
  17  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  18  * and/or sell copies of the Software, and to permit persons to whom the
  19  * Software is furnished to do so, subject to the following conditions:
  20  *
  21  * The above copyright notice and this permission notice shall be included
  22  * in all copies or substantial portions of the Software.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  25  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  27  * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  28  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30  */
  31
  32 /*
  33  * Modified by Jinrong Xie <stonexjr at gmail.com> 12/24/2014
  34  * for Space Navigator support on Windows.
  35  * This code is enhanced by at least supporting 3Dconnexion's
  36  * six degree of freedom navigator.
  37  */
  38
  39 #if(_WIN32_WINNT >= 0x0501)
  40
  41 #include <GL/freeglut.h>
  42 #include <stdlib.h>
  43 #include "../fg_internal.h"
  44
  45 enum {
  46     SPNAV_EVENT_ANY,
  47     SPNAV_EVENT_MOTION_TRANSLATION,
  48     SPNAV_EVENT_MOTION_ROTATION,
  49     SPNAV_EVENT_BUTTON  /* includes both press and release */
  50 };
  51
  52 extern int sball_initialized;
  53 unsigned int __fgSpaceKeystate = 0;
  54 RAWINPUTDEVICE __fgSpaceball = { 0x01, 0x08, 0x00, 0x00 };
  55
  56 void fgPlatformInitializeSpaceball(void)
  57 {
  58         HWND hwnd;
  59         sball_initialized = 1;
  60         if (!fgStructure.CurrentWindow)
  61         {
  62                 sball_initialized = 0;
  63                 return;
  64         }
  65         hwnd = fgStructure.CurrentWindow->Window.Handle;
  66
  67         {
  68                 BOOL ok;
  69                 UINT cbSize = sizeof(__fgSpaceball);
  70                 __fgSpaceball.hwndTarget = hwnd;
  71                 ok = RegisterRawInputDevices(&__fgSpaceball, 1, cbSize);
  72
  73                 if (!ok){
  74                         __fgSpaceball.hwndTarget = NULL;
  75                         sball_initialized = 0;
  76                 }
  77         }
  78 }
  79
  80 void fgPlatformSpaceballClose(void)
  81 {
  82         return;
  83 }
  84
  85 int fgPlatformHasSpaceball(void)
  86 {
  87         return __fgSpaceball.hwndTarget ? 1 : 0;
  88 }
  89
  90 int fgPlatformSpaceballNumButtons(void)
  91 {
  92         return 0;
  93 }
  94
  95 void fgPlatformSpaceballSetWindow(SFG_Window *window)
  96 {
  97         return;
  98 }
  99
 100 int fgIsSpaceballWinEvent(HWND hwnd, WPARAM wParam, LPARAM lParam)
 101 {
 102         return 0;
 103 }
 104
 105 void fgSpaceballHandleWinEvent(HWND hwnd, WPARAM wParam, LPARAM lParam)
 106 {
 107         #define LOGITECH_VENDOR_ID 0x46d
 108         HRAWINPUT hRawInput = (HRAWINPUT)lParam;
 109         UINT inputCode = (UINT)wParam;
 110         UINT size;
 111         BYTE *rawInputBuffer;
 112         PRAWINPUT pRawInput;
 113         UINT res;
 114         RID_DEVICE_INFO sRidDeviceInfo;
 115
 116         if (!sball_initialized)
 117         {
 118                 fgPlatformInitializeSpaceball();
 119                 if (!sball_initialized)
 120                 {
 121                         return;
 122                 }
 123         }
 124
 125         res = GetRawInputData(hRawInput, RID_INPUT, NULL, &size, sizeof(RAWINPUTHEADER));
 126         if (res == -1)
 127                 return;
 128
 129         rawInputBuffer = malloc(size * sizeof *rawInputBuffer);
 130         pRawInput = (PRAWINPUT)rawInputBuffer;
 131
 132         res = GetRawInputData(hRawInput, RID_INPUT, pRawInput, &size, sizeof(RAWINPUTHEADER));
 133         if (res == -1)
 134                 return;
 135         if (pRawInput->header.dwType != RIM_TYPEHID)
 136                 return;
 137
 138         sRidDeviceInfo.cbSize = sizeof(RID_DEVICE_INFO);
 139         size = sizeof(RID_DEVICE_INFO);
 140         res = GetRawInputDeviceInfo(pRawInput->header.hDevice, RIDI_DEVICEINFO, &sRidDeviceInfo, &size);
 141         if (res == -1)
 142                 return;
 143         {
 144                 SFG_Window* window = fgWindowByHandle(hwnd);
 145                 if ((window == NULL))
 146                         return;
 147
 148                 if (sRidDeviceInfo.hid.dwVendorId == LOGITECH_VENDOR_ID)
 149                 {
 150                         // Motion data comes in two parts: motion type and
 151                         // displacement/rotation along three axis.
 152                         // Orientation is a right handed coordinate system with
 153                         // X goes right, Y goes up and Z goes towards viewer, e.g.
 154                         // the one used in OpenGL
 155                         if (pRawInput->data.hid.bRawData[0] ==
 156                                 SPNAV_EVENT_MOTION_TRANSLATION)
 157                         { // Translation vector
 158                                 short* pnData = (short*)(&pRawInput->data.hid.bRawData[1]);
 159                                 short X = pnData[0];
 160                                 short Y = -pnData[2];
 161                                 short Z = pnData[1];
 162                                 INVOKE_WCB(*window, SpaceMotion, (X, Y, Z));
 163                         }
 164                         else if (pRawInput->data.hid.bRawData[0] ==
 165                                 SPNAV_EVENT_MOTION_ROTATION)
 166                         { // Axis aligned rotation vector
 167                                 short* pnData = (short*)(&pRawInput->data.hid.bRawData[1]);
 168                                 short rX = pnData[0];
 169                                 short rY = -pnData[2];
 170                                 short rZ = pnData[1];
 171                                 INVOKE_WCB(*window, SpaceRotation, (rX, rY, rZ));
 172                         }
 173                         else if (pRawInput->data.hid.bRawData[0] ==
 174                                 SPNAV_EVENT_BUTTON)
 175                         { // State of the keys
 176                                 unsigned long dwKeystate = *(unsigned long*)(&pRawInput->data.hid.bRawData[1]);
 177                                 unsigned int state = GLUT_UP;
 178                                 if (FETCH_WCB(*window, SpaceButton))
 179                                 {
 180                                         int i;
 181                                         for (i = 0; i < 32; i++)
 182                                         {
 183                                                 unsigned long stateBefore = __fgSpaceKeystate&(1 << i);
 184                                                 unsigned long stateNow = dwKeystate&(1 << i);
 185
 186                                                 if (stateBefore && !stateNow)
 187                                                         INVOKE_WCB(*window, SpaceButton, (stateBefore, GLUT_UP));
 188                                                 if (!stateBefore && stateNow)
 189                                                         INVOKE_WCB(*window, SpaceButton, (stateNow, GLUT_DOWN));
 190
 191                                         }
 192                                 }
 193                                 __fgSpaceKeystate = dwKeystate;
 194                         }
 195                 }
 196         }
 197 }
 198
 199 #endif