Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 1297:7b32c7a586c9
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 30 Jan 2006 13:32:31 +0000 |
| parents | 1760ceb23bc6 |
| children | a78446e47413 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Include file for SDL event handling */ | |
| 29 | |
| 30 #ifndef _SDL_events_h | |
| 31 #define _SDL_events_h | |
| 32 | |
| 33 #include "SDL_types.h" | |
| 34 #include "SDL_active.h" | |
| 35 #include "SDL_keyboard.h" | |
| 36 #include "SDL_mouse.h" | |
| 37 #include "SDL_joystick.h" | |
| 38 #include "SDL_quit.h" | |
| 39 | |
| 40 #include "begin_code.h" | |
| 41 /* Set up for C function definitions, even when using C++ */ | |
| 42 #ifdef __cplusplus | |
| 43 extern "C" { | |
| 44 #endif | |
| 45 | |
| 46 /* Event enumerations */ | |
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47 typedef enum { |
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48 SDL_NOEVENT = 0, /* Unused (do not remove) */ |
| 0 | 49 SDL_ACTIVEEVENT, /* Application loses/gains visibility */ |
| 50 SDL_KEYDOWN, /* Keys pressed */ | |
| 51 SDL_KEYUP, /* Keys released */ | |
| 52 SDL_MOUSEMOTION, /* Mouse moved */ | |
| 53 SDL_MOUSEBUTTONDOWN, /* Mouse button pressed */ | |
| 54 SDL_MOUSEBUTTONUP, /* Mouse button released */ | |
| 55 SDL_JOYAXISMOTION, /* Joystick axis motion */ | |
| 56 SDL_JOYBALLMOTION, /* Joystick trackball motion */ | |
| 57 SDL_JOYHATMOTION, /* Joystick hat position change */ | |
| 58 SDL_JOYBUTTONDOWN, /* Joystick button pressed */ | |
| 59 SDL_JOYBUTTONUP, /* Joystick button released */ | |
| 60 SDL_QUIT, /* User-requested quit */ | |
| 61 SDL_SYSWMEVENT, /* System specific event */ | |
| 62 SDL_EVENT_RESERVEDA, /* Reserved for future use.. */ | |
| 63 SDL_EVENT_RESERVEDB, /* Reserved for future use.. */ | |
| 64 SDL_VIDEORESIZE, /* User resized video mode */ | |
| 65 SDL_VIDEOEXPOSE, /* Screen needs to be redrawn */ | |
| 66 SDL_EVENT_RESERVED2, /* Reserved for future use.. */ | |
| 67 SDL_EVENT_RESERVED3, /* Reserved for future use.. */ | |
| 68 SDL_EVENT_RESERVED4, /* Reserved for future use.. */ | |
| 69 SDL_EVENT_RESERVED5, /* Reserved for future use.. */ | |
| 70 SDL_EVENT_RESERVED6, /* Reserved for future use.. */ | |
| 71 SDL_EVENT_RESERVED7, /* Reserved for future use.. */ | |
| 72 /* Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use */ | |
| 73 SDL_USEREVENT = 24, | |
| 74 /* This last event is only for bounding internal arrays | |
| 75 It is the number of bits in the event mask datatype -- Uint32 | |
| 76 */ | |
| 77 SDL_NUMEVENTS = 32 | |
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78 } SDL_EventType; |
| 0 | 79 |
| 80 /* Predefined event masks */ | |
| 81 #define SDL_EVENTMASK(X) (1<<(X)) | |
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82 typedef enum { |
| 0 | 83 SDL_ACTIVEEVENTMASK = SDL_EVENTMASK(SDL_ACTIVEEVENT), |
| 84 SDL_KEYDOWNMASK = SDL_EVENTMASK(SDL_KEYDOWN), | |
| 85 SDL_KEYUPMASK = SDL_EVENTMASK(SDL_KEYUP), | |
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86 SDL_KEYEVENTMASK = SDL_EVENTMASK(SDL_KEYDOWN)| |
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87 SDL_EVENTMASK(SDL_KEYUP) |
| 0 | 88 SDL_MOUSEMOTIONMASK = SDL_EVENTMASK(SDL_MOUSEMOTION), |
| 89 SDL_MOUSEBUTTONDOWNMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN), | |
| 90 SDL_MOUSEBUTTONUPMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 91 SDL_MOUSEEVENTMASK = SDL_EVENTMASK(SDL_MOUSEMOTION)| | |
| 92 SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN)| | |
| 93 SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 94 SDL_JOYAXISMOTIONMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION), | |
| 95 SDL_JOYBALLMOTIONMASK = SDL_EVENTMASK(SDL_JOYBALLMOTION), | |
| 96 SDL_JOYHATMOTIONMASK = SDL_EVENTMASK(SDL_JOYHATMOTION), | |
| 97 SDL_JOYBUTTONDOWNMASK = SDL_EVENTMASK(SDL_JOYBUTTONDOWN), | |
| 98 SDL_JOYBUTTONUPMASK = SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 99 SDL_JOYEVENTMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION)| | |
| 100 SDL_EVENTMASK(SDL_JOYBALLMOTION)| | |
| 101 SDL_EVENTMASK(SDL_JOYHATMOTION)| | |
| 102 SDL_EVENTMASK(SDL_JOYBUTTONDOWN)| | |
| 103 SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 104 SDL_VIDEORESIZEMASK = SDL_EVENTMASK(SDL_VIDEORESIZE), | |
| 105 SDL_VIDEOEXPOSEMASK = SDL_EVENTMASK(SDL_VIDEOEXPOSE), | |
| 106 SDL_QUITMASK = SDL_EVENTMASK(SDL_QUIT), | |
| 107 SDL_SYSWMEVENTMASK = SDL_EVENTMASK(SDL_SYSWMEVENT) | |
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108 } SDL_EventMask ; |
| 0 | 109 #define SDL_ALLEVENTS 0xFFFFFFFF |
| 110 | |
| 111 /* Application visibility event structure */ | |
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112 typedef struct SDL_ActiveEvent { |
| 0 | 113 Uint8 type; /* SDL_ACTIVEEVENT */ |
| 114 Uint8 gain; /* Whether given states were gained or lost (1/0) */ | |
| 115 Uint8 state; /* A mask of the focus states */ | |
| 116 } SDL_ActiveEvent; | |
| 117 | |
| 118 /* Keyboard event structure */ | |
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119 typedef struct SDL_KeyboardEvent { |
| 0 | 120 Uint8 type; /* SDL_KEYDOWN or SDL_KEYUP */ |
| 121 Uint8 which; /* The keyboard device index */ | |
| 122 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 123 SDL_keysym keysym; | |
| 124 } SDL_KeyboardEvent; | |
| 125 | |
| 126 /* Mouse motion event structure */ | |
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127 typedef struct SDL_MouseMotionEvent { |
| 0 | 128 Uint8 type; /* SDL_MOUSEMOTION */ |
| 129 Uint8 which; /* The mouse device index */ | |
| 130 Uint8 state; /* The current button state */ | |
| 131 Uint16 x, y; /* The X/Y coordinates of the mouse */ | |
| 132 Sint16 xrel; /* The relative motion in the X direction */ | |
| 133 Sint16 yrel; /* The relative motion in the Y direction */ | |
| 134 } SDL_MouseMotionEvent; | |
| 135 | |
| 136 /* Mouse button event structure */ | |
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137 typedef struct SDL_MouseButtonEvent { |
| 0 | 138 Uint8 type; /* SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP */ |
| 139 Uint8 which; /* The mouse device index */ | |
| 140 Uint8 button; /* The mouse button index */ | |
| 141 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 142 Uint16 x, y; /* The X/Y coordinates of the mouse at press time */ | |
| 143 } SDL_MouseButtonEvent; | |
| 144 | |
| 145 /* Joystick axis motion event structure */ | |
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146 typedef struct SDL_JoyAxisEvent { |
| 0 | 147 Uint8 type; /* SDL_JOYAXISMOTION */ |
| 148 Uint8 which; /* The joystick device index */ | |
| 149 Uint8 axis; /* The joystick axis index */ | |
| 150 Sint16 value; /* The axis value (range: -32768 to 32767) */ | |
| 151 } SDL_JoyAxisEvent; | |
| 152 | |
| 153 /* Joystick trackball motion event structure */ | |
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154 typedef struct SDL_JoyBallEvent { |
| 0 | 155 Uint8 type; /* SDL_JOYBALLMOTION */ |
| 156 Uint8 which; /* The joystick device index */ | |
| 157 Uint8 ball; /* The joystick trackball index */ | |
| 158 Sint16 xrel; /* The relative motion in the X direction */ | |
| 159 Sint16 yrel; /* The relative motion in the Y direction */ | |
| 160 } SDL_JoyBallEvent; | |
| 161 | |
| 162 /* Joystick hat position change event structure */ | |
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163 typedef struct SDL_JoyHatEvent { |
| 0 | 164 Uint8 type; /* SDL_JOYHATMOTION */ |
| 165 Uint8 which; /* The joystick device index */ | |
| 166 Uint8 hat; /* The joystick hat index */ | |
| 167 Uint8 value; /* The hat position value: | |
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168 SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP |
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169 SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT |
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170 SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN |
| 0 | 171 Note that zero means the POV is centered. |
| 172 */ | |
| 173 } SDL_JoyHatEvent; | |
| 174 | |
| 175 /* Joystick button event structure */ | |
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176 typedef struct SDL_JoyButtonEvent { |
| 0 | 177 Uint8 type; /* SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP */ |
| 178 Uint8 which; /* The joystick device index */ | |
| 179 Uint8 button; /* The joystick button index */ | |
| 180 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 181 } SDL_JoyButtonEvent; | |
| 182 | |
| 183 /* The "window resized" event | |
| 184 When you get this event, you are responsible for setting a new video | |
| 185 mode with the new width and height. | |
| 186 */ | |
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187 typedef struct SDL_ResizeEvent { |
| 0 | 188 Uint8 type; /* SDL_VIDEORESIZE */ |
| 189 int w; /* New width */ | |
| 190 int h; /* New height */ | |
| 191 } SDL_ResizeEvent; | |
| 192 | |
| 193 /* The "screen redraw" event */ | |
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194 typedef struct SDL_ExposeEvent { |
| 0 | 195 Uint8 type; /* SDL_VIDEOEXPOSE */ |
| 196 } SDL_ExposeEvent; | |
| 197 | |
| 198 /* The "quit requested" event */ | |
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199 typedef struct SDL_QuitEvent { |
| 0 | 200 Uint8 type; /* SDL_QUIT */ |
| 201 } SDL_QuitEvent; | |
| 202 | |
| 203 /* A user-defined event type */ | |
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204 typedef struct SDL_UserEvent { |
| 0 | 205 Uint8 type; /* SDL_USEREVENT through SDL_NUMEVENTS-1 */ |
| 206 int code; /* User defined event code */ | |
| 207 void *data1; /* User defined data pointer */ | |
| 208 void *data2; /* User defined data pointer */ | |
| 209 } SDL_UserEvent; | |
| 210 | |
| 211 /* If you want to use this event, you should include SDL_syswm.h */ | |
| 212 struct SDL_SysWMmsg; | |
| 213 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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214 typedef struct SDL_SysWMEvent { |
| 0 | 215 Uint8 type; |
| 216 SDL_SysWMmsg *msg; | |
| 217 } SDL_SysWMEvent; | |
| 218 | |
| 219 /* General event structure */ | |
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220 typedef union SDL_Event { |
| 0 | 221 Uint8 type; |
| 222 SDL_ActiveEvent active; | |
| 223 SDL_KeyboardEvent key; | |
| 224 SDL_MouseMotionEvent motion; | |
| 225 SDL_MouseButtonEvent button; | |
| 226 SDL_JoyAxisEvent jaxis; | |
| 227 SDL_JoyBallEvent jball; | |
| 228 SDL_JoyHatEvent jhat; | |
| 229 SDL_JoyButtonEvent jbutton; | |
| 230 SDL_ResizeEvent resize; | |
| 231 SDL_ExposeEvent expose; | |
| 232 SDL_QuitEvent quit; | |
| 233 SDL_UserEvent user; | |
| 234 SDL_SysWMEvent syswm; | |
| 235 } SDL_Event; | |
| 236 | |
| 237 | |
| 238 /* Function prototypes */ | |
| 239 | |
| 240 /* Pumps the event loop, gathering events from the input devices. | |
| 241 This function updates the event queue and internal input device state. | |
| 242 This should only be run in the thread that sets the video mode. | |
| 243 */ | |
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244 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
| 0 | 245 |
| 246 /* Checks the event queue for messages and optionally returns them. | |
| 247 If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to | |
| 248 the back of the event queue. | |
| 249 If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front | |
| 250 of the event queue, matching 'mask', will be returned and will not | |
| 251 be removed from the queue. | |
| 252 If 'action' is SDL_GETEVENT, up to 'numevents' events at the front | |
| 253 of the event queue, matching 'mask', will be returned and will be | |
| 254 removed from the queue. | |
| 255 This function returns the number of events actually stored, or -1 | |
| 256 if there was an error. This function is thread-safe. | |
| 257 */ | |
| 258 typedef enum { | |
| 259 SDL_ADDEVENT, | |
| 260 SDL_PEEKEVENT, | |
| 261 SDL_GETEVENT | |
| 262 } SDL_eventaction; | |
| 263 /* */ | |
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264 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event *events, int numevents, |
| 0 | 265 SDL_eventaction action, Uint32 mask); |
| 266 | |
| 267 /* Polls for currently pending events, and returns 1 if there are any pending | |
| 268 events, or 0 if there are none available. If 'event' is not NULL, the next | |
| 269 event is removed from the queue and stored in that area. | |
| 270 */ | |
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271 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event *event); |
| 0 | 272 |
| 273 /* Waits indefinitely for the next available event, returning 1, or 0 if there | |
| 274 was an error while waiting for events. If 'event' is not NULL, the next | |
| 275 event is removed from the queue and stored in that area. | |
| 276 */ | |
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277 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event *event); |
| 0 | 278 |
| 279 /* Add an event to the event queue. | |
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280 This function returns 0 on success, or -1 if the event queue was full |
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281 or there was some other error. |
| 0 | 282 */ |
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283 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event *event); |
| 0 | 284 |
| 285 /* | |
| 286 This function sets up a filter to process all events before they | |
| 287 change internal state and are posted to the internal event queue. | |
| 288 | |
| 289 The filter is protypted as: | |
| 290 */ | |
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291 typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); |
| 0 | 292 /* |
| 293 If the filter returns 1, then the event will be added to the internal queue. | |
| 294 If it returns 0, then the event will be dropped from the queue, but the | |
| 295 internal state will still be updated. This allows selective filtering of | |
| 296 dynamically arriving events. | |
| 297 | |
| 298 WARNING: Be very careful of what you do in the event filter function, as | |
| 299 it may run in a different thread! | |
| 300 | |
| 301 There is one caveat when dealing with the SDL_QUITEVENT event type. The | |
| 302 event filter is only called when the window manager desires to close the | |
| 303 application window. If the event filter returns 1, then the window will | |
| 304 be closed, otherwise the window will remain open if possible. | |
| 305 If the quit event is generated by an interrupt signal, it will bypass the | |
| 306 internal queue and be delivered to the application at the next event poll. | |
| 307 */ | |
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308 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter); |
| 0 | 309 |
| 310 /* | |
| 311 Return the current event filter - can be used to "chain" filters. | |
| 312 If there is no event filter set, this function returns NULL. | |
| 313 */ | |
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314 extern DECLSPEC SDL_EventFilter SDLCALL SDL_GetEventFilter(void); |
| 0 | 315 |
| 316 /* | |
| 317 This function allows you to set the state of processing certain events. | |
| 318 If 'state' is set to SDL_IGNORE, that event will be automatically dropped | |
| 319 from the event queue and will not event be filtered. | |
| 320 If 'state' is set to SDL_ENABLE, that event will be processed normally. | |
| 321 If 'state' is set to SDL_QUERY, SDL_EventState() will return the | |
| 322 current processing state of the specified event. | |
| 323 */ | |
| 324 #define SDL_QUERY -1 | |
| 325 #define SDL_IGNORE 0 | |
| 326 #define SDL_DISABLE 0 | |
| 327 #define SDL_ENABLE 1 | |
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328 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint8 type, int state); |
| 0 | 329 |
| 330 | |
| 331 /* Ends C function definitions when using C++ */ | |
| 332 #ifdef __cplusplus | |
| 333 } | |
| 334 #endif | |
| 335 #include "close_code.h" | |
| 336 | |
| 337 #endif /* _SDL_events_h */ |