Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 1324:42e95163d553
Favor using pthread_mutexattr_settype() on Linux.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 03 Feb 2006 06:33:54 +0000 |
| parents | c9b51268668f |
| children | 450721ad5436 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 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 | |
| 23 /* Include file for SDL event handling */ | |
| 24 | |
| 25 #ifndef _SDL_events_h | |
| 26 #define _SDL_events_h | |
| 27 | |
| 28 #include "SDL_types.h" | |
| 29 #include "SDL_active.h" | |
| 30 #include "SDL_keyboard.h" | |
| 31 #include "SDL_mouse.h" | |
| 32 #include "SDL_joystick.h" | |
| 33 #include "SDL_quit.h" | |
| 34 | |
| 35 #include "begin_code.h" | |
| 36 /* Set up for C function definitions, even when using C++ */ | |
| 37 #ifdef __cplusplus | |
| 38 extern "C" { | |
| 39 #endif | |
| 40 | |
| 41 /* Event enumerations */ | |
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42 typedef enum { |
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43 SDL_NOEVENT = 0, /* Unused (do not remove) */ |
| 0 | 44 SDL_ACTIVEEVENT, /* Application loses/gains visibility */ |
| 45 SDL_KEYDOWN, /* Keys pressed */ | |
| 46 SDL_KEYUP, /* Keys released */ | |
| 47 SDL_MOUSEMOTION, /* Mouse moved */ | |
| 48 SDL_MOUSEBUTTONDOWN, /* Mouse button pressed */ | |
| 49 SDL_MOUSEBUTTONUP, /* Mouse button released */ | |
| 50 SDL_JOYAXISMOTION, /* Joystick axis motion */ | |
| 51 SDL_JOYBALLMOTION, /* Joystick trackball motion */ | |
| 52 SDL_JOYHATMOTION, /* Joystick hat position change */ | |
| 53 SDL_JOYBUTTONDOWN, /* Joystick button pressed */ | |
| 54 SDL_JOYBUTTONUP, /* Joystick button released */ | |
| 55 SDL_QUIT, /* User-requested quit */ | |
| 56 SDL_SYSWMEVENT, /* System specific event */ | |
| 57 SDL_EVENT_RESERVEDA, /* Reserved for future use.. */ | |
| 58 SDL_EVENT_RESERVEDB, /* Reserved for future use.. */ | |
| 59 SDL_VIDEORESIZE, /* User resized video mode */ | |
| 60 SDL_VIDEOEXPOSE, /* Screen needs to be redrawn */ | |
| 61 SDL_EVENT_RESERVED2, /* Reserved for future use.. */ | |
| 62 SDL_EVENT_RESERVED3, /* Reserved for future use.. */ | |
| 63 SDL_EVENT_RESERVED4, /* Reserved for future use.. */ | |
| 64 SDL_EVENT_RESERVED5, /* Reserved for future use.. */ | |
| 65 SDL_EVENT_RESERVED6, /* Reserved for future use.. */ | |
| 66 SDL_EVENT_RESERVED7, /* Reserved for future use.. */ | |
| 67 /* Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use */ | |
| 68 SDL_USEREVENT = 24, | |
| 69 /* This last event is only for bounding internal arrays | |
| 70 It is the number of bits in the event mask datatype -- Uint32 | |
| 71 */ | |
| 72 SDL_NUMEVENTS = 32 | |
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73 } SDL_EventType; |
| 0 | 74 |
| 75 /* Predefined event masks */ | |
| 76 #define SDL_EVENTMASK(X) (1<<(X)) | |
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77 typedef enum { |
| 0 | 78 SDL_ACTIVEEVENTMASK = SDL_EVENTMASK(SDL_ACTIVEEVENT), |
| 79 SDL_KEYDOWNMASK = SDL_EVENTMASK(SDL_KEYDOWN), | |
| 80 SDL_KEYUPMASK = SDL_EVENTMASK(SDL_KEYUP), | |
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81 SDL_KEYEVENTMASK = SDL_EVENTMASK(SDL_KEYDOWN)| |
| 1301 | 82 SDL_EVENTMASK(SDL_KEYUP), |
| 0 | 83 SDL_MOUSEMOTIONMASK = SDL_EVENTMASK(SDL_MOUSEMOTION), |
| 84 SDL_MOUSEBUTTONDOWNMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN), | |
| 85 SDL_MOUSEBUTTONUPMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 86 SDL_MOUSEEVENTMASK = SDL_EVENTMASK(SDL_MOUSEMOTION)| | |
| 87 SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN)| | |
| 88 SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 89 SDL_JOYAXISMOTIONMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION), | |
| 90 SDL_JOYBALLMOTIONMASK = SDL_EVENTMASK(SDL_JOYBALLMOTION), | |
| 91 SDL_JOYHATMOTIONMASK = SDL_EVENTMASK(SDL_JOYHATMOTION), | |
| 92 SDL_JOYBUTTONDOWNMASK = SDL_EVENTMASK(SDL_JOYBUTTONDOWN), | |
| 93 SDL_JOYBUTTONUPMASK = SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 94 SDL_JOYEVENTMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION)| | |
| 95 SDL_EVENTMASK(SDL_JOYBALLMOTION)| | |
| 96 SDL_EVENTMASK(SDL_JOYHATMOTION)| | |
| 97 SDL_EVENTMASK(SDL_JOYBUTTONDOWN)| | |
| 98 SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 99 SDL_VIDEORESIZEMASK = SDL_EVENTMASK(SDL_VIDEORESIZE), | |
| 100 SDL_VIDEOEXPOSEMASK = SDL_EVENTMASK(SDL_VIDEOEXPOSE), | |
| 101 SDL_QUITMASK = SDL_EVENTMASK(SDL_QUIT), | |
| 102 SDL_SYSWMEVENTMASK = SDL_EVENTMASK(SDL_SYSWMEVENT) | |
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103 } SDL_EventMask ; |
| 0 | 104 #define SDL_ALLEVENTS 0xFFFFFFFF |
| 105 | |
| 106 /* Application visibility event structure */ | |
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107 typedef struct SDL_ActiveEvent { |
| 0 | 108 Uint8 type; /* SDL_ACTIVEEVENT */ |
| 109 Uint8 gain; /* Whether given states were gained or lost (1/0) */ | |
| 110 Uint8 state; /* A mask of the focus states */ | |
| 111 } SDL_ActiveEvent; | |
| 112 | |
| 113 /* Keyboard event structure */ | |
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114 typedef struct SDL_KeyboardEvent { |
| 0 | 115 Uint8 type; /* SDL_KEYDOWN or SDL_KEYUP */ |
| 116 Uint8 which; /* The keyboard device index */ | |
| 117 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 118 SDL_keysym keysym; | |
| 119 } SDL_KeyboardEvent; | |
| 120 | |
| 121 /* Mouse motion event structure */ | |
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122 typedef struct SDL_MouseMotionEvent { |
| 0 | 123 Uint8 type; /* SDL_MOUSEMOTION */ |
| 124 Uint8 which; /* The mouse device index */ | |
| 125 Uint8 state; /* The current button state */ | |
| 126 Uint16 x, y; /* The X/Y coordinates of the mouse */ | |
| 127 Sint16 xrel; /* The relative motion in the X direction */ | |
| 128 Sint16 yrel; /* The relative motion in the Y direction */ | |
| 129 } SDL_MouseMotionEvent; | |
| 130 | |
| 131 /* Mouse button event structure */ | |
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132 typedef struct SDL_MouseButtonEvent { |
| 0 | 133 Uint8 type; /* SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP */ |
| 134 Uint8 which; /* The mouse device index */ | |
| 135 Uint8 button; /* The mouse button index */ | |
| 136 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 137 Uint16 x, y; /* The X/Y coordinates of the mouse at press time */ | |
| 138 } SDL_MouseButtonEvent; | |
| 139 | |
| 140 /* Joystick axis motion event structure */ | |
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141 typedef struct SDL_JoyAxisEvent { |
| 0 | 142 Uint8 type; /* SDL_JOYAXISMOTION */ |
| 143 Uint8 which; /* The joystick device index */ | |
| 144 Uint8 axis; /* The joystick axis index */ | |
| 145 Sint16 value; /* The axis value (range: -32768 to 32767) */ | |
| 146 } SDL_JoyAxisEvent; | |
| 147 | |
| 148 /* Joystick trackball motion event structure */ | |
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149 typedef struct SDL_JoyBallEvent { |
| 0 | 150 Uint8 type; /* SDL_JOYBALLMOTION */ |
| 151 Uint8 which; /* The joystick device index */ | |
| 152 Uint8 ball; /* The joystick trackball index */ | |
| 153 Sint16 xrel; /* The relative motion in the X direction */ | |
| 154 Sint16 yrel; /* The relative motion in the Y direction */ | |
| 155 } SDL_JoyBallEvent; | |
| 156 | |
| 157 /* Joystick hat position change event structure */ | |
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158 typedef struct SDL_JoyHatEvent { |
| 0 | 159 Uint8 type; /* SDL_JOYHATMOTION */ |
| 160 Uint8 which; /* The joystick device index */ | |
| 161 Uint8 hat; /* The joystick hat index */ | |
| 162 Uint8 value; /* The hat position value: | |
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163 SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP |
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164 SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT |
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165 SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN |
| 0 | 166 Note that zero means the POV is centered. |
| 167 */ | |
| 168 } SDL_JoyHatEvent; | |
| 169 | |
| 170 /* Joystick button event structure */ | |
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171 typedef struct SDL_JoyButtonEvent { |
| 0 | 172 Uint8 type; /* SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP */ |
| 173 Uint8 which; /* The joystick device index */ | |
| 174 Uint8 button; /* The joystick button index */ | |
| 175 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 176 } SDL_JoyButtonEvent; | |
| 177 | |
| 178 /* The "window resized" event | |
| 179 When you get this event, you are responsible for setting a new video | |
| 180 mode with the new width and height. | |
| 181 */ | |
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182 typedef struct SDL_ResizeEvent { |
| 0 | 183 Uint8 type; /* SDL_VIDEORESIZE */ |
| 184 int w; /* New width */ | |
| 185 int h; /* New height */ | |
| 186 } SDL_ResizeEvent; | |
| 187 | |
| 188 /* The "screen redraw" event */ | |
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189 typedef struct SDL_ExposeEvent { |
| 0 | 190 Uint8 type; /* SDL_VIDEOEXPOSE */ |
| 191 } SDL_ExposeEvent; | |
| 192 | |
| 193 /* The "quit requested" event */ | |
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194 typedef struct SDL_QuitEvent { |
| 0 | 195 Uint8 type; /* SDL_QUIT */ |
| 196 } SDL_QuitEvent; | |
| 197 | |
| 198 /* A user-defined event type */ | |
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199 typedef struct SDL_UserEvent { |
| 0 | 200 Uint8 type; /* SDL_USEREVENT through SDL_NUMEVENTS-1 */ |
| 201 int code; /* User defined event code */ | |
| 202 void *data1; /* User defined data pointer */ | |
| 203 void *data2; /* User defined data pointer */ | |
| 204 } SDL_UserEvent; | |
| 205 | |
| 206 /* If you want to use this event, you should include SDL_syswm.h */ | |
| 207 struct SDL_SysWMmsg; | |
| 208 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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209 typedef struct SDL_SysWMEvent { |
| 0 | 210 Uint8 type; |
| 211 SDL_SysWMmsg *msg; | |
| 212 } SDL_SysWMEvent; | |
| 213 | |
| 214 /* General event structure */ | |
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215 typedef union SDL_Event { |
| 0 | 216 Uint8 type; |
| 217 SDL_ActiveEvent active; | |
| 218 SDL_KeyboardEvent key; | |
| 219 SDL_MouseMotionEvent motion; | |
| 220 SDL_MouseButtonEvent button; | |
| 221 SDL_JoyAxisEvent jaxis; | |
| 222 SDL_JoyBallEvent jball; | |
| 223 SDL_JoyHatEvent jhat; | |
| 224 SDL_JoyButtonEvent jbutton; | |
| 225 SDL_ResizeEvent resize; | |
| 226 SDL_ExposeEvent expose; | |
| 227 SDL_QuitEvent quit; | |
| 228 SDL_UserEvent user; | |
| 229 SDL_SysWMEvent syswm; | |
| 230 } SDL_Event; | |
| 231 | |
| 232 | |
| 233 /* Function prototypes */ | |
| 234 | |
| 235 /* Pumps the event loop, gathering events from the input devices. | |
| 236 This function updates the event queue and internal input device state. | |
| 237 This should only be run in the thread that sets the video mode. | |
| 238 */ | |
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239 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
| 0 | 240 |
| 241 /* Checks the event queue for messages and optionally returns them. | |
| 242 If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to | |
| 243 the back of the event queue. | |
| 244 If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front | |
| 245 of the event queue, matching 'mask', will be returned and will not | |
| 246 be removed from the queue. | |
| 247 If 'action' is SDL_GETEVENT, up to 'numevents' events at the front | |
| 248 of the event queue, matching 'mask', will be returned and will be | |
| 249 removed from the queue. | |
| 250 This function returns the number of events actually stored, or -1 | |
| 251 if there was an error. This function is thread-safe. | |
| 252 */ | |
| 253 typedef enum { | |
| 254 SDL_ADDEVENT, | |
| 255 SDL_PEEKEVENT, | |
| 256 SDL_GETEVENT | |
| 257 } SDL_eventaction; | |
| 258 /* */ | |
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259 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event *events, int numevents, |
| 0 | 260 SDL_eventaction action, Uint32 mask); |
| 261 | |
| 262 /* Polls for currently pending events, and returns 1 if there are any pending | |
| 263 events, or 0 if there are none available. If 'event' is not NULL, the next | |
| 264 event is removed from the queue and stored in that area. | |
| 265 */ | |
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266 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event *event); |
| 0 | 267 |
| 268 /* Waits indefinitely for the next available event, returning 1, or 0 if there | |
| 269 was an error while waiting for events. If 'event' is not NULL, the next | |
| 270 event is removed from the queue and stored in that area. | |
| 271 */ | |
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272 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event *event); |
| 0 | 273 |
| 274 /* Add an event to the event queue. | |
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275 This function returns 0 on success, or -1 if the event queue was full |
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276 or there was some other error. |
| 0 | 277 */ |
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278 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event *event); |
| 0 | 279 |
| 280 /* | |
| 281 This function sets up a filter to process all events before they | |
| 282 change internal state and are posted to the internal event queue. | |
| 283 | |
| 284 The filter is protypted as: | |
| 285 */ | |
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286 typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); |
| 0 | 287 /* |
| 288 If the filter returns 1, then the event will be added to the internal queue. | |
| 289 If it returns 0, then the event will be dropped from the queue, but the | |
| 290 internal state will still be updated. This allows selective filtering of | |
| 291 dynamically arriving events. | |
| 292 | |
| 293 WARNING: Be very careful of what you do in the event filter function, as | |
| 294 it may run in a different thread! | |
| 295 | |
| 296 There is one caveat when dealing with the SDL_QUITEVENT event type. The | |
| 297 event filter is only called when the window manager desires to close the | |
| 298 application window. If the event filter returns 1, then the window will | |
| 299 be closed, otherwise the window will remain open if possible. | |
| 300 If the quit event is generated by an interrupt signal, it will bypass the | |
| 301 internal queue and be delivered to the application at the next event poll. | |
| 302 */ | |
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303 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter); |
| 0 | 304 |
| 305 /* | |
| 306 Return the current event filter - can be used to "chain" filters. | |
| 307 If there is no event filter set, this function returns NULL. | |
| 308 */ | |
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309 extern DECLSPEC SDL_EventFilter SDLCALL SDL_GetEventFilter(void); |
| 0 | 310 |
| 311 /* | |
| 312 This function allows you to set the state of processing certain events. | |
| 313 If 'state' is set to SDL_IGNORE, that event will be automatically dropped | |
| 314 from the event queue and will not event be filtered. | |
| 315 If 'state' is set to SDL_ENABLE, that event will be processed normally. | |
| 316 If 'state' is set to SDL_QUERY, SDL_EventState() will return the | |
| 317 current processing state of the specified event. | |
| 318 */ | |
| 319 #define SDL_QUERY -1 | |
| 320 #define SDL_IGNORE 0 | |
| 321 #define SDL_DISABLE 0 | |
| 322 #define SDL_ENABLE 1 | |
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323 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint8 type, int state); |
| 0 | 324 |
| 325 | |
| 326 /* Ends C function definitions when using C++ */ | |
| 327 #ifdef __cplusplus | |
| 328 } | |
| 329 #endif | |
| 330 #include "close_code.h" | |
| 331 | |
| 332 #endif /* _SDL_events_h */ |