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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<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> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |