Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 4224:6637846f3f7f SDL-1.2
Whoops, need both the header and the library!
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 21 Sep 2009 11:30:54 +0000 |
| parents | 4c4113c2162c |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 4217 | 23 /** |
| 24 * @file SDL_events.h | |
| 25 * Include file for SDL event handling | |
| 26 */ | |
| 0 | 27 |
| 28 #ifndef _SDL_events_h | |
| 29 #define _SDL_events_h | |
| 30 | |
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31 #include "SDL_stdinc.h" |
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32 #include "SDL_error.h" |
| 0 | 33 #include "SDL_active.h" |
| 34 #include "SDL_keyboard.h" | |
| 35 #include "SDL_mouse.h" | |
| 36 #include "SDL_joystick.h" | |
| 37 #include "SDL_quit.h" | |
| 38 | |
| 39 #include "begin_code.h" | |
| 40 /* Set up for C function definitions, even when using C++ */ | |
| 41 #ifdef __cplusplus | |
| 42 extern "C" { | |
| 43 #endif | |
| 44 | |
| 4217 | 45 /** @name General keyboard/mouse state definitions */ |
| 46 /*@{*/ | |
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47 #define SDL_RELEASED 0 |
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48 #define SDL_PRESSED 1 |
| 4217 | 49 /*@}*/ |
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50 |
| 4217 | 51 /** Event enumerations */ |
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52 typedef enum { |
| 4217 | 53 SDL_NOEVENT = 0, /**< Unused (do not remove) */ |
| 54 SDL_ACTIVEEVENT, /**< Application loses/gains visibility */ | |
| 55 SDL_KEYDOWN, /**< Keys pressed */ | |
| 56 SDL_KEYUP, /**< Keys released */ | |
| 57 SDL_MOUSEMOTION, /**< Mouse moved */ | |
| 58 SDL_MOUSEBUTTONDOWN, /**< Mouse button pressed */ | |
| 59 SDL_MOUSEBUTTONUP, /**< Mouse button released */ | |
| 60 SDL_JOYAXISMOTION, /**< Joystick axis motion */ | |
| 61 SDL_JOYBALLMOTION, /**< Joystick trackball motion */ | |
| 62 SDL_JOYHATMOTION, /**< Joystick hat position change */ | |
| 63 SDL_JOYBUTTONDOWN, /**< Joystick button pressed */ | |
| 64 SDL_JOYBUTTONUP, /**< Joystick button released */ | |
| 65 SDL_QUIT, /**< User-requested quit */ | |
| 66 SDL_SYSWMEVENT, /**< System specific event */ | |
| 67 SDL_EVENT_RESERVEDA, /**< Reserved for future use.. */ | |
| 68 SDL_EVENT_RESERVEDB, /**< Reserved for future use.. */ | |
| 69 SDL_VIDEORESIZE, /**< User resized video mode */ | |
| 70 SDL_VIDEOEXPOSE, /**< Screen needs to be redrawn */ | |
| 71 SDL_EVENT_RESERVED2, /**< Reserved for future use.. */ | |
| 72 SDL_EVENT_RESERVED3, /**< Reserved for future use.. */ | |
| 73 SDL_EVENT_RESERVED4, /**< Reserved for future use.. */ | |
| 74 SDL_EVENT_RESERVED5, /**< Reserved for future use.. */ | |
| 75 SDL_EVENT_RESERVED6, /**< Reserved for future use.. */ | |
| 76 SDL_EVENT_RESERVED7, /**< Reserved for future use.. */ | |
| 77 /** Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use */ | |
| 0 | 78 SDL_USEREVENT = 24, |
| 4217 | 79 /** This last event is only for bounding internal arrays |
| 80 * It is the number of bits in the event mask datatype -- Uint32 | |
| 0 | 81 */ |
| 82 SDL_NUMEVENTS = 32 | |
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83 } SDL_EventType; |
| 0 | 84 |
| 4217 | 85 /** @name Predefined event masks */ |
| 86 /*@{*/ | |
| 0 | 87 #define SDL_EVENTMASK(X) (1<<(X)) |
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88 typedef enum { |
| 0 | 89 SDL_ACTIVEEVENTMASK = SDL_EVENTMASK(SDL_ACTIVEEVENT), |
| 90 SDL_KEYDOWNMASK = SDL_EVENTMASK(SDL_KEYDOWN), | |
| 91 SDL_KEYUPMASK = SDL_EVENTMASK(SDL_KEYUP), | |
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92 SDL_KEYEVENTMASK = SDL_EVENTMASK(SDL_KEYDOWN)| |
| 1301 | 93 SDL_EVENTMASK(SDL_KEYUP), |
| 0 | 94 SDL_MOUSEMOTIONMASK = SDL_EVENTMASK(SDL_MOUSEMOTION), |
| 95 SDL_MOUSEBUTTONDOWNMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN), | |
| 96 SDL_MOUSEBUTTONUPMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 97 SDL_MOUSEEVENTMASK = SDL_EVENTMASK(SDL_MOUSEMOTION)| | |
| 98 SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN)| | |
| 99 SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 100 SDL_JOYAXISMOTIONMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION), | |
| 101 SDL_JOYBALLMOTIONMASK = SDL_EVENTMASK(SDL_JOYBALLMOTION), | |
| 102 SDL_JOYHATMOTIONMASK = SDL_EVENTMASK(SDL_JOYHATMOTION), | |
| 103 SDL_JOYBUTTONDOWNMASK = SDL_EVENTMASK(SDL_JOYBUTTONDOWN), | |
| 104 SDL_JOYBUTTONUPMASK = SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 105 SDL_JOYEVENTMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION)| | |
| 106 SDL_EVENTMASK(SDL_JOYBALLMOTION)| | |
| 107 SDL_EVENTMASK(SDL_JOYHATMOTION)| | |
| 108 SDL_EVENTMASK(SDL_JOYBUTTONDOWN)| | |
| 109 SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 110 SDL_VIDEORESIZEMASK = SDL_EVENTMASK(SDL_VIDEORESIZE), | |
| 111 SDL_VIDEOEXPOSEMASK = SDL_EVENTMASK(SDL_VIDEOEXPOSE), | |
| 112 SDL_QUITMASK = SDL_EVENTMASK(SDL_QUIT), | |
| 113 SDL_SYSWMEVENTMASK = SDL_EVENTMASK(SDL_SYSWMEVENT) | |
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114 } SDL_EventMask ; |
| 0 | 115 #define SDL_ALLEVENTS 0xFFFFFFFF |
| 4217 | 116 /*@}*/ |
| 0 | 117 |
| 4217 | 118 /** Application visibility event structure */ |
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119 typedef struct SDL_ActiveEvent { |
| 4217 | 120 Uint8 type; /**< SDL_ACTIVEEVENT */ |
| 121 Uint8 gain; /**< Whether given states were gained or lost (1/0) */ | |
| 122 Uint8 state; /**< A mask of the focus states */ | |
| 0 | 123 } SDL_ActiveEvent; |
| 124 | |
| 4217 | 125 /** Keyboard event structure */ |
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126 typedef struct SDL_KeyboardEvent { |
| 4217 | 127 Uint8 type; /**< SDL_KEYDOWN or SDL_KEYUP */ |
| 128 Uint8 which; /**< The keyboard device index */ | |
| 129 Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ | |
| 0 | 130 SDL_keysym keysym; |
| 131 } SDL_KeyboardEvent; | |
| 132 | |
| 4217 | 133 /** Mouse motion event structure */ |
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134 typedef struct SDL_MouseMotionEvent { |
| 4217 | 135 Uint8 type; /**< SDL_MOUSEMOTION */ |
| 136 Uint8 which; /**< The mouse device index */ | |
| 137 Uint8 state; /**< The current button state */ | |
| 138 Uint16 x, y; /**< The X/Y coordinates of the mouse */ | |
| 139 Sint16 xrel; /**< The relative motion in the X direction */ | |
| 140 Sint16 yrel; /**< The relative motion in the Y direction */ | |
| 0 | 141 } SDL_MouseMotionEvent; |
| 142 | |
| 4217 | 143 /** Mouse button event structure */ |
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144 typedef struct SDL_MouseButtonEvent { |
| 4217 | 145 Uint8 type; /**< SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP */ |
| 146 Uint8 which; /**< The mouse device index */ | |
| 147 Uint8 button; /**< The mouse button index */ | |
| 148 Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ | |
| 149 Uint16 x, y; /**< The X/Y coordinates of the mouse at press time */ | |
| 0 | 150 } SDL_MouseButtonEvent; |
| 151 | |
| 4217 | 152 /** Joystick axis motion event structure */ |
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153 typedef struct SDL_JoyAxisEvent { |
| 4217 | 154 Uint8 type; /**< SDL_JOYAXISMOTION */ |
| 155 Uint8 which; /**< The joystick device index */ | |
| 156 Uint8 axis; /**< The joystick axis index */ | |
| 157 Sint16 value; /**< The axis value (range: -32768 to 32767) */ | |
| 0 | 158 } SDL_JoyAxisEvent; |
| 159 | |
| 4217 | 160 /** Joystick trackball motion event structure */ |
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161 typedef struct SDL_JoyBallEvent { |
| 4217 | 162 Uint8 type; /**< SDL_JOYBALLMOTION */ |
| 163 Uint8 which; /**< The joystick device index */ | |
| 164 Uint8 ball; /**< The joystick trackball index */ | |
| 165 Sint16 xrel; /**< The relative motion in the X direction */ | |
| 166 Sint16 yrel; /**< The relative motion in the Y direction */ | |
| 0 | 167 } SDL_JoyBallEvent; |
| 168 | |
| 4217 | 169 /** Joystick hat position change event structure */ |
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170 typedef struct SDL_JoyHatEvent { |
| 4217 | 171 Uint8 type; /**< SDL_JOYHATMOTION */ |
| 172 Uint8 which; /**< The joystick device index */ | |
| 173 Uint8 hat; /**< The joystick hat index */ | |
| 174 Uint8 value; /**< The hat position value: | |
| 175 * SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP | |
| 176 * SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT | |
| 177 * SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN | |
| 178 * Note that zero means the POV is centered. | |
| 179 */ | |
| 0 | 180 } SDL_JoyHatEvent; |
| 181 | |
| 4217 | 182 /** Joystick button event structure */ |
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183 typedef struct SDL_JoyButtonEvent { |
| 4217 | 184 Uint8 type; /**< SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP */ |
| 185 Uint8 which; /**< The joystick device index */ | |
| 186 Uint8 button; /**< The joystick button index */ | |
| 187 Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ | |
| 0 | 188 } SDL_JoyButtonEvent; |
| 189 | |
| 4217 | 190 /** The "window resized" event |
| 191 * When you get this event, you are responsible for setting a new video | |
| 192 * mode with the new width and height. | |
| 0 | 193 */ |
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194 typedef struct SDL_ResizeEvent { |
| 4217 | 195 Uint8 type; /**< SDL_VIDEORESIZE */ |
| 196 int w; /**< New width */ | |
| 197 int h; /**< New height */ | |
| 0 | 198 } SDL_ResizeEvent; |
| 199 | |
| 4217 | 200 /** The "screen redraw" event */ |
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201 typedef struct SDL_ExposeEvent { |
| 4217 | 202 Uint8 type; /**< SDL_VIDEOEXPOSE */ |
| 0 | 203 } SDL_ExposeEvent; |
| 204 | |
| 4217 | 205 /** The "quit requested" event */ |
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206 typedef struct SDL_QuitEvent { |
| 4217 | 207 Uint8 type; /**< SDL_QUIT */ |
| 0 | 208 } SDL_QuitEvent; |
| 209 | |
| 4217 | 210 /** A user-defined event type */ |
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211 typedef struct SDL_UserEvent { |
| 4217 | 212 Uint8 type; /**< SDL_USEREVENT through SDL_NUMEVENTS-1 */ |
| 213 int code; /**< User defined event code */ | |
| 214 void *data1; /**< User defined data pointer */ | |
| 215 void *data2; /**< User defined data pointer */ | |
| 0 | 216 } SDL_UserEvent; |
| 217 | |
| 4217 | 218 /** If you want to use this event, you should include SDL_syswm.h */ |
| 0 | 219 struct SDL_SysWMmsg; |
| 220 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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221 typedef struct SDL_SysWMEvent { |
| 0 | 222 Uint8 type; |
| 223 SDL_SysWMmsg *msg; | |
| 224 } SDL_SysWMEvent; | |
| 225 | |
| 4217 | 226 /** General event structure */ |
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227 typedef union SDL_Event { |
| 0 | 228 Uint8 type; |
| 229 SDL_ActiveEvent active; | |
| 230 SDL_KeyboardEvent key; | |
| 231 SDL_MouseMotionEvent motion; | |
| 232 SDL_MouseButtonEvent button; | |
| 233 SDL_JoyAxisEvent jaxis; | |
| 234 SDL_JoyBallEvent jball; | |
| 235 SDL_JoyHatEvent jhat; | |
| 236 SDL_JoyButtonEvent jbutton; | |
| 237 SDL_ResizeEvent resize; | |
| 238 SDL_ExposeEvent expose; | |
| 239 SDL_QuitEvent quit; | |
| 240 SDL_UserEvent user; | |
| 241 SDL_SysWMEvent syswm; | |
| 242 } SDL_Event; | |
| 243 | |
| 244 | |
| 245 /* Function prototypes */ | |
| 246 | |
| 4217 | 247 /** Pumps the event loop, gathering events from the input devices. |
| 248 * This function updates the event queue and internal input device state. | |
| 249 * This should only be run in the thread that sets the video mode. | |
| 250 */ | |
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251 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
| 0 | 252 |
| 253 typedef enum { | |
| 254 SDL_ADDEVENT, | |
| 255 SDL_PEEKEVENT, | |
| 256 SDL_GETEVENT | |
| 257 } SDL_eventaction; | |
| 4217 | 258 |
| 259 /** | |
| 260 * Checks the event queue for messages and optionally returns them. | |
| 261 * | |
| 262 * If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to | |
| 263 * the back of the event queue. | |
| 264 * If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front | |
| 265 * of the event queue, matching 'mask', will be returned and will not | |
| 266 * be removed from the queue. | |
| 267 * If 'action' is SDL_GETEVENT, up to 'numevents' events at the front | |
| 268 * of the event queue, matching 'mask', will be returned and will be | |
| 269 * removed from the queue. | |
| 270 * | |
| 271 * @return | |
| 272 * This function returns the number of events actually stored, or -1 | |
| 273 * if there was an error. | |
| 274 * | |
| 275 * This function is thread-safe. | |
| 276 */ | |
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277 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event *events, int numevents, |
| 0 | 278 SDL_eventaction action, Uint32 mask); |
| 279 | |
| 4217 | 280 /** Polls for currently pending events, and returns 1 if there are any pending |
| 281 * events, or 0 if there are none available. If 'event' is not NULL, the next | |
| 282 * event is removed from the queue and stored in that area. | |
| 0 | 283 */ |
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284 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event *event); |
| 0 | 285 |
| 4217 | 286 /** Waits indefinitely for the next available event, returning 1, or 0 if there |
| 287 * was an error while waiting for events. If 'event' is not NULL, the next | |
| 288 * event is removed from the queue and stored in that area. | |
| 0 | 289 */ |
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290 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event *event); |
| 0 | 291 |
| 4217 | 292 /** Add an event to the event queue. |
| 293 * This function returns 0 on success, or -1 if the event queue was full | |
| 294 * or there was some other error. | |
| 0 | 295 */ |
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296 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event *event); |
| 0 | 297 |
| 4217 | 298 /** @name Event Filtering */ |
| 299 /*@{*/ | |
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300 typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); |
| 4217 | 301 /** |
| 302 * This function sets up a filter to process all events before they | |
| 303 * change internal state and are posted to the internal event queue. | |
| 304 * | |
| 305 * The filter is protypted as: | |
| 306 * @code typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); @endcode | |
| 307 * | |
| 308 * If the filter returns 1, then the event will be added to the internal queue. | |
| 309 * If it returns 0, then the event will be dropped from the queue, but the | |
| 310 * internal state will still be updated. This allows selective filtering of | |
| 311 * dynamically arriving events. | |
| 312 * | |
| 313 * @warning Be very careful of what you do in the event filter function, as | |
| 314 * it may run in a different thread! | |
| 315 * | |
| 316 * There is one caveat when dealing with the SDL_QUITEVENT event type. The | |
| 317 * event filter is only called when the window manager desires to close the | |
| 318 * application window. If the event filter returns 1, then the window will | |
| 319 * be closed, otherwise the window will remain open if possible. | |
| 320 * If the quit event is generated by an interrupt signal, it will bypass the | |
| 321 * internal queue and be delivered to the application at the next event poll. | |
| 322 */ | |
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323 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter); |
| 0 | 324 |
| 4217 | 325 /** |
| 326 * Return the current event filter - can be used to "chain" filters. | |
| 327 * If there is no event filter set, this function returns NULL. | |
| 328 */ | |
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329 extern DECLSPEC SDL_EventFilter SDLCALL SDL_GetEventFilter(void); |
| 4217 | 330 /*@}*/ |
| 0 | 331 |
| 4217 | 332 /** @name Event State */ |
| 333 /*@{*/ | |
| 0 | 334 #define SDL_QUERY -1 |
| 335 #define SDL_IGNORE 0 | |
| 336 #define SDL_DISABLE 0 | |
| 337 #define SDL_ENABLE 1 | |
| 4217 | 338 /*@}*/ |
| 339 | |
| 340 /** | |
| 341 * This function allows you to set the state of processing certain events. | |
| 342 * If 'state' is set to SDL_IGNORE, that event will be automatically dropped | |
| 343 * from the event queue and will not event be filtered. | |
| 344 * If 'state' is set to SDL_ENABLE, that event will be processed normally. | |
| 345 * If 'state' is set to SDL_QUERY, SDL_EventState() will return the | |
| 346 * current processing state of the specified event. | |
| 347 */ | |
|
337
9154ec9ca3d2
Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
348 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint8 type, int state); |
| 0 | 349 |
| 350 /* Ends C function definitions when using C++ */ | |
| 351 #ifdef __cplusplus | |
| 352 } | |
| 353 #endif | |
| 354 #include "close_code.h" | |
| 355 | |
| 356 #endif /* _SDL_events_h */ |