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<hr><h1>di_event_emitter.cpp</h1><a href="di__event__emitter_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000-2002 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026
00027 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font>
00028
00029 <font class="preprocessor">#include "<a class="code" href="di__event__emitter_8h.html">nel/misc/di_event_emitter.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="events_8h.html">nel/misc/events.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="win__event__emitter_8h.html">nel/misc/win_event_emitter.h</a>"</font>
00032 <font class="comment">//</font>
00033 <font class="preprocessor">#include "<a class="code" href="di__mouse__device_8h.html">misc/di_mouse_device.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="di__keyboard__device_8h.html">misc/di_keyboard_device.h</a>"</font>
00035 <font class="preprocessor">#include "<a class="code" href="di__game__device_8h.html">misc/di_game_device.h</a>"</font>
00036 <font class="comment">//</font>
00037 <font class="preprocessor">#include <memory></font>
00038 <font class="preprocessor">#include <algorithm></font>
00039
00040 <font class="preprocessor">#ifdef NL_OS_WINDOWS</font>
00041 <font class="preprocessor"></font>
00042
00043
00044 <font class="keyword">namespace </font>NLMISC
00045 {
00046
00047 <font class="preprocessor">#ifdef NL_DEBUG</font>
00048 <font class="preprocessor"></font> <font class="keyword">static</font> <font class="keyword">const</font> <font class="keywordtype">char</font> DirectInputLibName[] = <font class="stringliteral">"dinput8.dll"</font>;
00049 <font class="preprocessor">#else</font>
00050 <font class="preprocessor"></font> <font class="keyword">static</font> <font class="keyword">const</font> <font class="keywordtype">char</font> DirectInputLibName[] = <font class="stringliteral">"dinput8d.dll"</font>;
00051 <font class="preprocessor">#endif</font>
00052 <font class="preprocessor"></font>
00053
00055 <font class="comment">// CDIEventEmitter statics //</font>
00057 <font class="comment"></font>
00058 HMODULE CDIEventEmitter::_DirectInputLibHandle = 0;
00059 CDIEventEmitter::TPDirectInput8Create CDIEventEmitter::_PDirectInput8Create = NULL;
00060 <a class="code" href="types__nl_8h.html#a14">uint</a> CDIEventEmitter::_NumCreatedInterfaces = 0;
00061
00064
00066 <font class="comment">// CDIEventEmitter implementation //</font>
00068 <font class="comment"></font>
00069
00070 <font class="comment">//======================================================</font>
00071 CDIEventEmitter::CDIEventEmitter(HWND hwnd, CWinEventEmitter *we)
00072 :
00073 _hWnd(hwnd),
00074 _WE(we),
00075 _DInput8(NULL),
00076 _Keyboard(NULL),
00077 _Mouse(NULL),
00078 _ButtonsFlags(<a class="code" href="namespaceNLMISC.html#a297a156">noButton</a>)
00079 {
00080 }
00081 <font class="comment">//======================================================</font>
00082 CDIEventEmitter::~CDIEventEmitter()
00083 {
00084 releaseMouse();
00085 releaseKeyboard();
00086 <font class="comment">// release all devices</font>
00087 <font class="keywordflow">while</font> (_DeviceServer.getNumDevices() != 0)
00088 {
00089 IInputDevice *dev = _DeviceServer.getDevice(0);
00090 _DeviceServer.removeDevice(dev);
00091 <font class="keyword">delete</font> dev;
00092 }
00093 <font class="keywordflow">if</font> (_DInput8) _DInput8->Release();
00094 -- _NumCreatedInterfaces;
00095 <font class="keywordflow">if</font> (_NumCreatedInterfaces == 0) unloadLib();
00096 }
00097
00098 <font class="comment">//======================================================</font>
00099 CDIEventEmitter *CDIEventEmitter::create(HINSTANCE hinst, HWND hwnd, CWinEventEmitter *we) <font class="keywordflow">throw</font>(EDirectInput)
00100 {
00101 <font class="keywordflow">if</font> (!loadLib()) <font class="keywordflow">throw</font> EDirectInputLibNotFound();
00102 std::auto_ptr<CDIEventEmitter> dxee(<font class="keyword">new</font> CDIEventEmitter(hwnd, we));
00103 HRESULT result = _PDirectInput8Create(hinst,
00104 DIRECTINPUT_VERSION,
00105 IID_IDirectInput8A,
00106 (<font class="keywordtype">void</font> **) &dxee->_DInput8,
00107 NULL);
00108 <font class="keywordflow">if</font> (result != DI_OK) <font class="keywordflow">throw</font> EDirectInputInitFailed();
00109
00110 <font class="comment">// ok, everything's fine, commit changes</font>
00111 ++_NumCreatedInterfaces;
00112 <font class="keywordflow">return</font> dxee.release();
00113 }
00114
00115
00116 <font class="comment">//======================================================</font>
00117 <font class="keywordtype">bool</font> CDIEventEmitter::loadLib()
00118 {
00119 <font class="keywordflow">if</font> (_DirectInputLibHandle != 0) <font class="keywordflow">return</font> <font class="keyword">true</font>; <font class="comment">// library already loaded ?</font>
00120 HMODULE handle = ::LoadLibrary(DirectInputLibName);
00121 <font class="keywordflow">if</font> (handle == 0) <font class="keywordflow">return</font> <font class="keyword">false</font>;
00122 <font class="comment">// try to get the creation function</font>
00123 TPDirectInput8Create cf = (TPDirectInput8Create) ::GetProcAddress(handle, <font class="stringliteral">"DirectInput8Create"</font>);
00124 <font class="keywordflow">if</font> (!cf)
00125 {
00126 ::FreeLibrary(handle);
00127 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00128 }
00129 <font class="comment">// commit changes</font>
00130 _DirectInputLibHandle = handle;
00131 _PDirectInput8Create = cf;
00132 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00133 }
00134
00135
00136 <font class="comment">//======================================================</font>
00137 <font class="keywordtype">void</font> CDIEventEmitter::unloadLib()
00138 {
00139 <a class="code" href="debug_8h.html#a6">nlassert</a>(_DirectInputLibHandle != 0);
00140 ::FreeLibrary(_DirectInputLibHandle);
00141 _DirectInputLibHandle = 0;
00142 _PDirectInput8Create = NULL;
00143 }
00144
00145 <font class="comment">//======================================================</font>
00146 <font class="keywordtype">void</font> CDIEventEmitter::poll(CEventServer *server)
00147 {
00148 <font class="keywordflow">if</font> (_WE) _ButtonsFlags = _WE->buildFlags();
00149 <font class="keywordflow">if</font> (!server)
00150 server=&_InternalServer;
00151 _DeviceServer.poll(server);
00152 }
00153
00154
00155 <font class="comment">//======================================================</font>
00156 <a class="code" href="namespaceNLMISC.html#a297">TMouseButton</a> CDIEventEmitter::buildButtonsFlags()<font class="keyword"> const</font>
00157 <font class="keyword"></font>{
00158 <a class="code" href="types__nl_8h.html#a14">uint</a> mouseFlags;
00159 <a class="code" href="types__nl_8h.html#a14">uint</a> keybFlags;
00160 <font class="comment">// </font>
00161 <font class="keywordflow">if</font> (_Mouse) <font class="comment">// takes the flags from the direct input mouse</font>
00162 {
00163 mouseFlags = (_Mouse->getButton(0) ? <a class="code" href="namespaceNLMISC.html#a297a157">leftButton</a> : 0)
00164 | (_Mouse->getButton(1) ? <a class="code" href="namespaceNLMISC.html#a297a159">rightButton</a> : 0)
00165 | (_Mouse->getButton(2) ? <a class="code" href="namespaceNLMISC.html#a297a158">middleButton</a> : 0);
00166 }
00167 <font class="keywordflow">else</font> <font class="comment">// takes the flags from the system mouse</font>
00168 {
00169 mouseFlags = _ButtonsFlags & (<a class="code" href="namespaceNLMISC.html#a297a157">leftButton</a> | <a class="code" href="namespaceNLMISC.html#a297a159">rightButton</a> | <a class="code" href="namespaceNLMISC.html#a297a158">middleButton</a>);
00170 }
00171 <font class="comment">//</font>
00172 <font class="keywordflow">if</font> (_Keyboard) <font class="comment">// takes the flags from the direct input keyboard</font>
00173 {
00174 keybFlags = (_Keyboard->ShiftPressed ? <a class="code" href="namespaceNLMISC.html#a297a161">shiftButton</a> : 0)
00175 | (_Keyboard->AltPressed ? <a class="code" href="namespaceNLMISC.html#a297a162">altButton</a> : 0)
00176 | (_Keyboard->CtrlPressed ? <a class="code" href="namespaceNLMISC.html#a297a160">ctrlButton</a> : 0);
00177 }
00178 <font class="keywordflow">else</font> <font class="comment">// takes the flags from the system keyboard</font>
00179 {
00180 keybFlags = _ButtonsFlags & (<a class="code" href="namespaceNLMISC.html#a297a161">shiftButton</a> | <a class="code" href="namespaceNLMISC.html#a297a162">altButton</a> | <a class="code" href="namespaceNLMISC.html#a297a160">ctrlButton</a>);
00181 }
00182 <font class="keywordflow">return</font> (TMouseButton) (keybFlags | mouseFlags);
00183 }
00184
00185 <font class="comment">//======================================================</font>
00186 IMouseDevice *CDIEventEmitter::getMouseDevice() <font class="keywordflow">throw</font>(EInputDevice)
00187 {
00188 <font class="keywordflow">if</font> (_Mouse) <font class="keywordflow">return</font> _Mouse; <font class="comment">// already created ?</font>
00189 <font class="keywordflow">try</font>
00190 {
00191 <font class="comment">// Create a mouse</font>
00192 std::auto_ptr<CDIMouse> mouse(CDIMouse::createMouseDevice(_DInput8, _hWnd, <font class="keyword">this</font>));
00193 <font class="comment">// register to the device server</font>
00194 _DeviceServer.registerDevice(mouse.get());
00195 _Mouse = mouse.get();
00196 <font class="keywordflow">if</font> (_WE) _WE->enableMouseEvents(<font class="keyword">false</font>);
00197 <font class="keywordflow">return</font> mouse.release();
00198 }
00199 <font class="keywordflow">catch</font> (...)
00200 {
00201 <font class="keywordflow">if</font> (_WE) _WE->enableMouseEvents(<font class="keyword">true</font>);
00202 <font class="keywordflow">throw</font>;
00203 }
00204 }
00205
00206 <font class="comment">//======================================================</font>
00207 <font class="keywordtype">void</font> CDIEventEmitter::releaseMouse()
00208 {
00209 <font class="keywordflow">if</font> (!_Mouse) <font class="keywordflow">return</font>;
00210 <font class="comment">// reupdate the system keyboard flags</font>
00211 <font class="keywordflow">if</font> (_WE)
00212 {
00213 _WE->resetButtonFlagState();
00214 _WE->enableMouseEvents(<font class="keyword">true</font>);
00215 }
00216 <font class="comment">// remove the device</font>
00217 _DeviceServer.removeDevice(_Mouse);
00218 <font class="keyword">delete</font> _Mouse;
00219 _Mouse = NULL;
00220 }
00221
00222 <font class="comment">//===========================================================================</font>
00223 IKeyboardDevice *CDIEventEmitter::getKeyboardDevice() <font class="keywordflow">throw</font>(EInputDevice)
00224 {
00225 <font class="keywordflow">if</font> (_Keyboard) <font class="keywordflow">return</font> _Keyboard;
00226 <font class="comment">// create a keyboard</font>
00227 std::auto_ptr<CDIKeyboard> keyboard(CDIKeyboard::createKeyboardDevice(_DInput8, _hWnd, <font class="keyword">this</font>, _WE));
00228 <font class="comment">// register to the device server</font>
00229 _DeviceServer.registerDevice(keyboard.get());
00230 _Keyboard = keyboard.get();
00231 <font class="keywordflow">return</font> keyboard.release();
00232 }
00233
00234 <font class="comment">//==========================================================================</font>
00235 <font class="keywordtype">void</font> CDIEventEmitter::releaseKeyboard()
00236 {
00237 <font class="keywordflow">if</font> (!_Keyboard) <font class="keywordflow">return</font>;
00238 <font class="comment">// reupdate the system keyboard flags</font>
00239 <font class="keywordflow">if</font> (_WE) _WE->resetButtonFlagState();
00240 <font class="comment">//</font>
00241 _DeviceServer.removeDevice(_Keyboard);
00242 <font class="keyword">delete</font> _Keyboard;
00243 _Keyboard = NULL;
00244 }
00245
00246
00247 <font class="comment">//==========================================================================</font>
00248 <font class="keywordtype">void</font> CDIEventEmitter::submitEvents(CEventServer &server)
00249 {
00250 _InternalServer.setServer(&server);
00251 _InternalServer.pump();
00252 }
00253
00254 <font class="comment">//==========================================================================</font>
00256 <font class="comment">static BOOL CALLBACK DIEnumDevicesDescCallback</font>
00257 (
00258 LPCDIDEVICEINSTANCE lpddi,
00259 LPVOID pvRef
00260 )
00261 {
00262 CGameDeviceDesc desc;
00263 desc.InstanceName = lpddi->tszInstanceName;
00264 desc.ProductName = lpddi->tszProductName;
00265 <font class="keywordflow">switch</font> (lpddi->wUsage & 0xff)
00266 {
00267 <font class="keywordflow">case</font> DI8DEVTYPE_JOYSTICK: desc.DevType = CGameDeviceDesc::Joystick; <font class="keywordflow">break</font>;
00268 <font class="keywordflow">case</font> DI8DEVTYPE_GAMEPAD: desc.DevType = CGameDeviceDesc::GamePad; <font class="keywordflow">break</font>;
00269 <font class="keywordflow">default</font>: desc.DevType = CGameDeviceDesc::DontKnow; <font class="keywordflow">break</font>;
00270 }
00271 <a class="code" href="namespaceNLMISC.html#a167">TDeviceDescVect</a> *dv = (<a class="code" href="namespaceNLMISC.html#a167">TDeviceDescVect</a> *) pvRef;
00272 dv->push_back(desc);
00273 <font class="keywordflow">return</font> DIENUM_CONTINUE;
00274 }
00275
00276
00277 <font class="comment">//==========================================================================</font>
00279 <font class="comment">static BOOL CALLBACK DIEnumDevicesGUIDCallback</font>
00280 (
00281 LPCDIDEVICEINSTANCE lpddi,
00282 LPVOID pvRef
00283 )
00284 {
00285 std::vector<GUID> *gv = (std::vector<GUID> *) pvRef;
00286 gv->push_back(lpddi->guidInstance);
00287 <font class="keywordflow">return</font> DIENUM_CONTINUE;
00288 }
00289
00290
00291 <font class="comment">//==========================================================================</font>
00292 <font class="keywordtype">void</font> CDIEventEmitter::enumerateGameDevice(<a class="code" href="namespaceNLMISC.html#a167">TDeviceDescVect</a> &descs) <font class="keywordflow">throw</font>(EInputDevice)
00293 {
00294 <a class="code" href="types__nl_8h.html#a14">uint</a> k;
00295 <a class="code" href="debug_8h.html#a6">nlassert</a>(_DInput8);
00296 descs.clear();
00297 <font class="comment">// enum all devices of interest</font>
00298 _DInput8->EnumDevices(DI8DEVCLASS_GAMECTRL, &DIEnumDevicesDescCallback, (LPVOID) &descs, DIEDFL_ALLDEVICES);
00299 <font class="keywordflow">for</font> (k = 0; k < descs.size(); ++k) descs[k].Connected = <font class="keyword">false</font>;
00300 <font class="comment">// enum all connected devices</font>
00301 <font class="keyword">static</font> <a class="code" href="namespaceNLMISC.html#a167">TDeviceDescVect</a> connecteds;
00302 _DInput8->EnumDevices(DI8DEVCLASS_GAMECTRL, &DIEnumDevicesDescCallback, (LPVOID) &connecteds, DIEDFL_ATTACHEDONLY);
00303 <font class="comment">// see which devices are connected</font>
00304 <font class="keywordflow">for</font> (k = 0; k < connecteds.size(); ++k)
00305 {
00306 TDeviceDescVect::iterator it = std::find(descs.begin(), descs.end(), connecteds[k]);
00307 it->Connected = <font class="keyword">true</font>;
00308 }
00309 }
00310
00311 <font class="comment">//==========================================================================</font>
00312 IGameDevice *CDIEventEmitter::createGameDevice(<font class="keyword">const</font> std::string &instanceName) <font class="keywordflow">throw</font>(EInputDevice)
00313 {
00314 <font class="keyword">static</font> <a class="code" href="namespaceNLMISC.html#a167">TDeviceDescVect</a> deviceDescs;
00315 <font class="keyword">static</font> std::vector<GUID> deviceGUID;
00316
00317 <a class="code" href="debug_8h.html#a6">nlassert</a>(_DInput8);
00318 enumerateGameDevice(deviceDescs);
00319 <font class="comment">// get the ID for each device</font>
00320 deviceGUID.clear();
00321 HRESULT <a class="code" href="driver__opengl__extension__def_8h.html#a262">r</a> = _DInput8->EnumDevices(DI8DEVCLASS_GAMECTRL, &DIEnumDevicesGUIDCallback, (LPVOID) &deviceGUID, DIEDFL_ALLDEVICES);
00322 <a class="code" href="debug_8h.html#a6">nlassert</a>(<a class="code" href="driver__opengl__extension__def_8h.html#a262">r</a> == DI_OK);
00323 <a class="code" href="debug_8h.html#a6">nlassert</a>(deviceDescs.size() == deviceGUID.size());
00324
00325 <font class="comment">// search the device that match the instance name</font>
00326 <font class="keywordflow">for</font> (<a class="code" href="types__nl_8h.html#a14">uint</a> k = 0; k < deviceDescs.size(); ++k)
00327 {
00328 <font class="keywordflow">if</font> (deviceDescs[k].InstanceName == instanceName)
00329 {
00330 std::auto_ptr<CDIGameDevice> gd(CDIGameDevice::createGameDevice(_DInput8, _hWnd, <font class="keyword">this</font>, deviceDescs[k], deviceGUID[k]));
00331 <font class="comment">// insert in the device server</font>
00332 _DeviceServer.registerDevice(gd.get());
00333 <font class="keywordflow">return</font> gd.release();
00334 }
00335 }
00336 <font class="keywordflow">return</font> NULL;
00337 }
00338
00339 <font class="comment">//==========================================================================</font>
00340 <font class="keywordtype">void</font> CDIEventEmitter::releaseGameDevice(IGameDevice *gd)
00341 {
00342 <a class="code" href="debug_8h.html#a6">nlassert</a>(gd);
00343 CDIGameDevice *digd = safe_cast<CDIGameDevice *>(gd);
00344 _DeviceServer.removeDevice(digd);
00345 <font class="keyword">delete</font> gd;
00346 }
00347
00348
00349 } <font class="comment">// NLMISC</font>
00350
00351 <font class="preprocessor">#endif // NL_OS_WINDOWS</font>
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