sdlinput.cpp

00001 /*      _______   __   __   __   ______   __   __   _______   __   __
00002  *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
00003  *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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00005  *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
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00007  * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
00008  *
00009  * Copyright (c) 2004, 2005, 2006 Olof Naessén and Per Larsson
00010  *
00011  *                                                         Js_./
00012  * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
00013  * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
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00052  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
00053  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
00054  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00055  */
00056 
00057 /*
00058  * For comments regarding functions please see the header file.
00059  */
00060 
00061 #include "guichan/sdl/sdlinput.hpp"
00062 
00063 #include "guichan/exception.hpp"
00064 
00065 namespace gcn
00066 {
00067     SDLInput::SDLInput()
00068     {
00069         mMouseInWindow = true;
00070         mMouseDown = false;
00071     }
00072 
00073     bool SDLInput::isKeyQueueEmpty()
00074     {
00075         return mKeyInputQueue.empty();
00076     }
00077 
00078     KeyInput SDLInput::dequeueKeyInput()
00079     {
00080         KeyInput keyInput;
00081 
00082         if (mKeyInputQueue.empty())
00083         {
00084             throw GCN_EXCEPTION("The queue is empty.");
00085         }
00086 
00087         keyInput = mKeyInputQueue.front();
00088         mKeyInputQueue.pop();
00089 
00090         return keyInput;
00091     }
00092 
00093     bool SDLInput::isMouseQueueEmpty()
00094     {
00095         return mMouseInputQueue.empty();
00096     }
00097 
00098     MouseInput SDLInput::dequeueMouseInput()
00099     {
00100         MouseInput mouseInput;
00101 
00102         if (mMouseInputQueue.empty())
00103         {
00104             throw GCN_EXCEPTION("The queue is empty.");
00105         }
00106 
00107         mouseInput = mMouseInputQueue.front();
00108         mMouseInputQueue.pop();
00109 
00110         return mouseInput;
00111     }
00112 
00113     void SDLInput::pushInput(SDL_Event event)
00114     {
00115         KeyInput keyInput;
00116         MouseInput mouseInput;
00117 
00118         switch (event.type)
00119         {
00120           case SDL_KEYDOWN:
00121               keyInput.setKey(convertKeyCharacter(event.key.keysym));
00122               keyInput.setType(KeyInput::PRESS);
00123               mKeyInputQueue.push(keyInput);
00124               break;
00125 
00126           case SDL_KEYUP:
00127               keyInput.setKey(convertKeyCharacter(event.key.keysym));
00128               keyInput.setType(KeyInput::RELEASE);
00129               mKeyInputQueue.push(keyInput);
00130               break;
00131 
00132           case SDL_MOUSEBUTTONDOWN:
00133               mMouseDown = true;
00134               mouseInput.x = event.button.x;
00135               mouseInput.y = event.button.y;
00136               mouseInput.setButton(convertMouseButton(event.button.button));
00137               mouseInput.setType(MouseInput::PRESS);
00138               mouseInput.setTimeStamp(SDL_GetTicks());
00139               mMouseInputQueue.push(mouseInput);
00140               break;
00141 
00142           case SDL_MOUSEBUTTONUP:
00143               mMouseDown = false;
00144               mouseInput.x = event.button.x;
00145               mouseInput.y = event.button.y;
00146               mouseInput.setButton(convertMouseButton(event.button.button));
00147               mouseInput.setType(MouseInput::RELEASE);
00148               mouseInput.setTimeStamp(SDL_GetTicks());
00149               mMouseInputQueue.push(mouseInput);
00150               break;
00151 
00152           case SDL_MOUSEMOTION:
00153               mouseInput.x = event.button.x;
00154               mouseInput.y = event.button.y;
00155               mouseInput.setButton(MouseInput::EMPTY);
00156               mouseInput.setType(MouseInput::MOTION);
00157               mouseInput.setTimeStamp(SDL_GetTicks());
00158               mMouseInputQueue.push(mouseInput);
00159               break;
00160 
00161           case SDL_ACTIVEEVENT:
00162               /*
00163                * This occurs when the mouse leaves the window and the Gui-chan
00164                * application loses its mousefocus.
00165                */
00166               if ((event.active.state & SDL_APPMOUSEFOCUS)
00167                   && !event.active.gain)
00168               {
00169                   mMouseInWindow = false;
00170 
00171                   if (!mMouseDown)
00172                   {
00173                       mouseInput.x = -1;
00174                       mouseInput.y = -1;
00175                       mouseInput.setButton(MouseInput::EMPTY);
00176                       mouseInput.setType(MouseInput::MOTION);
00177                       mMouseInputQueue.push(mouseInput);
00178                   }
00179               }
00180 
00181               if ((event.active.state & SDL_APPMOUSEFOCUS)
00182                   && event.active.gain)
00183               {
00184                   mMouseInWindow = true;
00185               }
00186               break;
00187 
00188         } // end switch
00189     }
00190 
00191     int SDLInput::convertMouseButton(int button)
00192     {
00193         switch (button)
00194         {
00195           case SDL_BUTTON_LEFT:
00196               return MouseInput::LEFT;
00197               break;
00198           case SDL_BUTTON_RIGHT:
00199               return MouseInput::RIGHT;
00200               break;
00201           case SDL_BUTTON_MIDDLE:
00202               return MouseInput::MIDDLE;
00203               break;
00204           case SDL_BUTTON_WHEELUP:
00205               return MouseInput::WHEEL_UP;
00206               break;
00207           case SDL_BUTTON_WHEELDOWN:
00208               return MouseInput::WHEEL_DOWN;
00209               break;
00210         }
00211 
00212         throw GCN_EXCEPTION("Unknown SDL mouse type.");
00213 
00214         return 0;
00215     }
00216 
00217     Key SDLInput::convertKeyCharacter(SDL_keysym keysym)
00218     {
00219         int value = 0;
00220         Key key;
00221 
00222         if (keysym.unicode < 255)
00223         {
00224             value = (int)keysym.unicode;
00225         }
00226 
00227         switch (keysym.sym)
00228         {
00229           case SDLK_TAB:
00230               value = Key::TAB;
00231               break;
00232           case SDLK_LALT:
00233               value = Key::LEFT_ALT;
00234               break;
00235           case SDLK_RALT:
00236               value = Key::RIGHT_ALT;
00237               break;
00238           case SDLK_LSHIFT:
00239               value = Key::LEFT_SHIFT;
00240               break;
00241           case SDLK_RSHIFT:
00242               value = Key::RIGHT_SHIFT;
00243               break;
00244           case SDLK_LCTRL:
00245               value = Key::LEFT_CONTROL;
00246               break;
00247           case SDLK_RCTRL:
00248               value = Key::RIGHT_CONTROL;
00249               break;
00250           case SDLK_BACKSPACE:
00251               value = Key::BACKSPACE;
00252               break;
00253           case SDLK_PAUSE:
00254               value = Key::PAUSE;
00255               break;
00256           case SDLK_SPACE:
00257               value = Key::SPACE;
00258               break;
00259           case SDLK_ESCAPE:
00260               value = Key::ESCAPE;
00261               break;
00262           case SDLK_DELETE:
00263               value = Key::DELETE;
00264               break;
00265           case SDLK_INSERT:
00266               value = Key::INSERT;
00267               break;
00268           case SDLK_HOME:
00269               value = Key::HOME;
00270               break;
00271           case SDLK_END:
00272               value = Key::END;
00273               break;
00274           case SDLK_PAGEUP:
00275               value = Key::PAGE_UP;
00276               break;
00277           case SDLK_PRINT:
00278               value = Key::PRINT_SCREEN;
00279               break;
00280           case SDLK_PAGEDOWN:
00281               value = Key::PAGE_DOWN;
00282               break;
00283           case SDLK_F1:
00284               value = Key::F1;
00285               break;
00286           case SDLK_F2:
00287               value = Key::F2;
00288               break;
00289           case SDLK_F3:
00290               value = Key::F3;
00291               break;
00292           case SDLK_F4:
00293               value = Key::F4;
00294               break;
00295           case SDLK_F5:
00296               value = Key::F5;
00297               break;
00298           case SDLK_F6:
00299               value = Key::F6;
00300               break;
00301           case SDLK_F7:
00302               value = Key::F7;
00303               break;
00304           case SDLK_F8:
00305               value = Key::F8;
00306               break;
00307           case SDLK_F9:
00308               value = Key::F9;
00309               break;
00310           case SDLK_F10:
00311               value = Key::F10;
00312               break;
00313           case SDLK_F11:
00314               value = Key::F11;
00315               break;
00316           case SDLK_F12:
00317               value = Key::F12;
00318               break;
00319           case SDLK_F13:
00320               value = Key::F13;
00321               break;
00322           case SDLK_F14:
00323               value = Key::F14;
00324               break;
00325           case SDLK_F15:
00326               value = Key::F15;
00327               break;
00328           case SDLK_NUMLOCK:
00329               value = Key::NUM_LOCK;
00330               break;
00331           case SDLK_CAPSLOCK:
00332               value = Key::CAPS_LOCK;
00333               break;
00334           case SDLK_SCROLLOCK:
00335               value = Key::SCROLL_LOCK;
00336               break;
00337           case SDLK_RMETA:
00338               value = Key::RIGHT_META;
00339               break;
00340           case SDLK_LMETA:
00341               value = Key::LEFT_META;
00342               break;
00343           case SDLK_LSUPER:
00344               value = Key::LEFT_SUPER;
00345               break;
00346           case SDLK_RSUPER:
00347               value = Key::RIGHT_SUPER;
00348               break;
00349           case SDLK_MODE:
00350               value = Key::ALT_GR;
00351               break;
00352           case SDLK_UP:
00353               value = Key::UP;
00354               break;
00355           case SDLK_DOWN:
00356               value = Key::DOWN;
00357               break;
00358           case SDLK_LEFT:
00359               value = Key::LEFT;
00360               break;
00361           case SDLK_RIGHT:
00362               value = Key::RIGHT;
00363               break;
00364           case SDLK_RETURN:
00365               value = Key::ENTER;
00366               break;
00367           case SDLK_KP_ENTER:
00368               value = Key::ENTER;
00369               break;
00370 
00371           default:
00372               break;
00373         }
00374 
00375         if (!(keysym.mod & KMOD_NUM))
00376         {
00377             switch (keysym.sym)
00378             {
00379               case SDLK_KP0:
00380                   value = Key::INSERT;
00381                   break;
00382               case SDLK_KP1:
00383                   value = Key::END;
00384                   break;
00385               case SDLK_KP2:
00386                   value = Key::DOWN;
00387                   break;
00388               case SDLK_KP3:
00389                   value = Key::PAGE_DOWN;
00390                   break;
00391               case SDLK_KP4:
00392                   value = Key::LEFT;
00393                   break;
00394               case SDLK_KP5:
00395                   value = 0;
00396                   break;
00397               case SDLK_KP6:
00398                   value = Key::RIGHT;
00399                   break;
00400               case SDLK_KP7:
00401                   value = Key::HOME;
00402                   break;
00403               case SDLK_KP8:
00404                   value = Key::UP;
00405                   break;
00406               case SDLK_KP9:
00407                   value = Key::PAGE_UP;
00408                   break;
00409               default:
00410                   break;
00411             }
00412         }
00413 
00414         key.setValue(value);
00415         key.setShiftPressed(keysym.mod & KMOD_SHIFT);
00416         key.setControlPressed(keysym.mod & KMOD_CTRL);
00417         key.setAltPressed(keysym.mod & KMOD_ALT);
00418         key.setMetaPressed(keysym.mod & KMOD_META);
00419 
00420         if (keysym.sym >= SDLK_KP0 && keysym.sym <= SDLK_KP_EQUALS)
00421         {
00422             key.setNumericPad(true);
00423         }
00424 
00425         return key;
00426     }
00427 }

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