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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 &lt;memory&gt;</font>
+00038 <font class="preprocessor">#include &lt;algorithm&gt;</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-&gt;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&lt;CDIEventEmitter&gt; 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> **) &amp;dxee-&gt;_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-&gt;buildFlags();
+00149 <font class="keywordflow">if</font> (!server)
+00150 server=&amp;_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-&gt;getButton(0) ? <a class="code" href="namespaceNLMISC.html#a297a157">leftButton</a> : 0)
+00164 | (_Mouse-&gt;getButton(1) ? <a class="code" href="namespaceNLMISC.html#a297a159">rightButton</a> : 0)
+00165 | (_Mouse-&gt;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 &amp; (<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-&gt;ShiftPressed ? <a class="code" href="namespaceNLMISC.html#a297a161">shiftButton</a> : 0)
+00175 | (_Keyboard-&gt;AltPressed ? <a class="code" href="namespaceNLMISC.html#a297a162">altButton</a> : 0)
+00176 | (_Keyboard-&gt;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 &amp; (<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&lt;CDIMouse&gt; 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-&gt;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-&gt;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-&gt;resetButtonFlagState();
+00214 _WE-&gt;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&lt;CDIKeyboard&gt; 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-&gt;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 &amp;server)
+00249 {
+00250 _InternalServer.setServer(&amp;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-&gt;tszInstanceName;
+00264 desc.ProductName = lpddi-&gt;tszProductName;
+00265 <font class="keywordflow">switch</font> (lpddi-&gt;wUsage &amp; 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-&gt;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&lt;GUID&gt; *gv = (std::vector&lt;GUID&gt; *) pvRef;
+00286 gv-&gt;push_back(lpddi-&gt;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> &amp;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-&gt;EnumDevices(DI8DEVCLASS_GAMECTRL, &amp;DIEnumDevicesDescCallback, (LPVOID) &amp;descs, DIEDFL_ALLDEVICES);
+00299 <font class="keywordflow">for</font> (k = 0; k &lt; 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-&gt;EnumDevices(DI8DEVCLASS_GAMECTRL, &amp;DIEnumDevicesDescCallback, (LPVOID) &amp;connecteds, DIEDFL_ATTACHEDONLY);
+00303 <font class="comment">// see which devices are connected</font>
+00304 <font class="keywordflow">for</font> (k = 0; k &lt; connecteds.size(); ++k)
+00305 {
+00306 TDeviceDescVect::iterator it = std::find(descs.begin(), descs.end(), connecteds[k]);
+00307 it-&gt;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 &amp;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&lt;GUID&gt; 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-&gt;EnumDevices(DI8DEVCLASS_GAMECTRL, &amp;DIEnumDevicesGUIDCallback, (LPVOID) &amp;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 &lt; deviceDescs.size(); ++k)
+00327 {
+00328 <font class="keywordflow">if</font> (deviceDescs[k].InstanceName == instanceName)
+00329 {
+00330 std::auto_ptr&lt;CDIGameDevice&gt; 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&lt;CDIGameDevice *&gt;(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>
+
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