Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 1023:e719ee25439d
Fix potential use of freed memory in the threaded timer system
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 04 Jan 2005 19:05:32 +0000 |
| parents | 02759105b989 |
| children | b2283b0ded26 |
| 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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Updated the headers with the correct e-mail address
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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 */ | |
| 47 enum { SDL_NOEVENT = 0, /* Unused (do not remove) */ | |
| 48 SDL_ACTIVEEVENT, /* Application loses/gains visibility */ | |
| 49 SDL_KEYDOWN, /* Keys pressed */ | |
| 50 SDL_KEYUP, /* Keys released */ | |
| 51 SDL_MOUSEMOTION, /* Mouse moved */ | |
| 52 SDL_MOUSEBUTTONDOWN, /* Mouse button pressed */ | |
| 53 SDL_MOUSEBUTTONUP, /* Mouse button released */ | |
| 54 SDL_JOYAXISMOTION, /* Joystick axis motion */ | |
| 55 SDL_JOYBALLMOTION, /* Joystick trackball motion */ | |
| 56 SDL_JOYHATMOTION, /* Joystick hat position change */ | |
| 57 SDL_JOYBUTTONDOWN, /* Joystick button pressed */ | |
| 58 SDL_JOYBUTTONUP, /* Joystick button released */ | |
| 59 SDL_QUIT, /* User-requested quit */ | |
| 60 SDL_SYSWMEVENT, /* System specific event */ | |
| 61 SDL_EVENT_RESERVEDA, /* Reserved for future use.. */ | |
| 62 SDL_EVENT_RESERVEDB, /* Reserved for future use.. */ | |
| 63 SDL_VIDEORESIZE, /* User resized video mode */ | |
| 64 SDL_VIDEOEXPOSE, /* Screen needs to be redrawn */ | |
| 65 SDL_EVENT_RESERVED2, /* Reserved for future use.. */ | |
| 66 SDL_EVENT_RESERVED3, /* Reserved for future use.. */ | |
| 67 SDL_EVENT_RESERVED4, /* Reserved for future use.. */ | |
| 68 SDL_EVENT_RESERVED5, /* Reserved for future use.. */ | |
| 69 SDL_EVENT_RESERVED6, /* Reserved for future use.. */ | |
| 70 SDL_EVENT_RESERVED7, /* Reserved for future use.. */ | |
| 71 /* Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use */ | |
| 72 SDL_USEREVENT = 24, | |
| 73 /* This last event is only for bounding internal arrays | |
| 74 It is the number of bits in the event mask datatype -- Uint32 | |
| 75 */ | |
| 76 SDL_NUMEVENTS = 32 | |
| 77 }; | |
| 78 | |
| 79 /* Predefined event masks */ | |
| 80 #define SDL_EVENTMASK(X) (1<<(X)) | |
| 81 enum { | |
| 82 SDL_ACTIVEEVENTMASK = SDL_EVENTMASK(SDL_ACTIVEEVENT), | |
| 83 SDL_KEYDOWNMASK = SDL_EVENTMASK(SDL_KEYDOWN), | |
| 84 SDL_KEYUPMASK = SDL_EVENTMASK(SDL_KEYUP), | |
| 85 SDL_MOUSEMOTIONMASK = SDL_EVENTMASK(SDL_MOUSEMOTION), | |
| 86 SDL_MOUSEBUTTONDOWNMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN), | |
| 87 SDL_MOUSEBUTTONUPMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 88 SDL_MOUSEEVENTMASK = SDL_EVENTMASK(SDL_MOUSEMOTION)| | |
| 89 SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN)| | |
| 90 SDL_EVENTMASK(SDL_MOUSEBUTTONUP), | |
| 91 SDL_JOYAXISMOTIONMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION), | |
| 92 SDL_JOYBALLMOTIONMASK = SDL_EVENTMASK(SDL_JOYBALLMOTION), | |
| 93 SDL_JOYHATMOTIONMASK = SDL_EVENTMASK(SDL_JOYHATMOTION), | |
| 94 SDL_JOYBUTTONDOWNMASK = SDL_EVENTMASK(SDL_JOYBUTTONDOWN), | |
| 95 SDL_JOYBUTTONUPMASK = SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 96 SDL_JOYEVENTMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION)| | |
| 97 SDL_EVENTMASK(SDL_JOYBALLMOTION)| | |
| 98 SDL_EVENTMASK(SDL_JOYHATMOTION)| | |
| 99 SDL_EVENTMASK(SDL_JOYBUTTONDOWN)| | |
| 100 SDL_EVENTMASK(SDL_JOYBUTTONUP), | |
| 101 SDL_VIDEORESIZEMASK = SDL_EVENTMASK(SDL_VIDEORESIZE), | |
| 102 SDL_VIDEOEXPOSEMASK = SDL_EVENTMASK(SDL_VIDEOEXPOSE), | |
| 103 SDL_QUITMASK = SDL_EVENTMASK(SDL_QUIT), | |
| 104 SDL_SYSWMEVENTMASK = SDL_EVENTMASK(SDL_SYSWMEVENT) | |
| 105 }; | |
| 106 #define SDL_ALLEVENTS 0xFFFFFFFF | |
| 107 | |
| 108 /* Application visibility event structure */ | |
|
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109 typedef struct SDL_ActiveEvent { |
| 0 | 110 Uint8 type; /* SDL_ACTIVEEVENT */ |
| 111 Uint8 gain; /* Whether given states were gained or lost (1/0) */ | |
| 112 Uint8 state; /* A mask of the focus states */ | |
| 113 } SDL_ActiveEvent; | |
| 114 | |
| 115 /* Keyboard event structure */ | |
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116 typedef struct SDL_KeyboardEvent { |
| 0 | 117 Uint8 type; /* SDL_KEYDOWN or SDL_KEYUP */ |
| 118 Uint8 which; /* The keyboard device index */ | |
| 119 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 120 SDL_keysym keysym; | |
| 121 } SDL_KeyboardEvent; | |
| 122 | |
| 123 /* Mouse motion event structure */ | |
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124 typedef struct SDL_MouseMotionEvent { |
| 0 | 125 Uint8 type; /* SDL_MOUSEMOTION */ |
| 126 Uint8 which; /* The mouse device index */ | |
| 127 Uint8 state; /* The current button state */ | |
| 128 Uint16 x, y; /* The X/Y coordinates of the mouse */ | |
| 129 Sint16 xrel; /* The relative motion in the X direction */ | |
| 130 Sint16 yrel; /* The relative motion in the Y direction */ | |
| 131 } SDL_MouseMotionEvent; | |
| 132 | |
| 133 /* Mouse button event structure */ | |
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134 typedef struct SDL_MouseButtonEvent { |
| 0 | 135 Uint8 type; /* SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP */ |
| 136 Uint8 which; /* The mouse device index */ | |
| 137 Uint8 button; /* The mouse button index */ | |
| 138 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 139 Uint16 x, y; /* The X/Y coordinates of the mouse at press time */ | |
| 140 } SDL_MouseButtonEvent; | |
| 141 | |
| 142 /* Joystick axis motion event structure */ | |
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143 typedef struct SDL_JoyAxisEvent { |
| 0 | 144 Uint8 type; /* SDL_JOYAXISMOTION */ |
| 145 Uint8 which; /* The joystick device index */ | |
| 146 Uint8 axis; /* The joystick axis index */ | |
| 147 Sint16 value; /* The axis value (range: -32768 to 32767) */ | |
| 148 } SDL_JoyAxisEvent; | |
| 149 | |
| 150 /* Joystick trackball motion event structure */ | |
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151 typedef struct SDL_JoyBallEvent { |
| 0 | 152 Uint8 type; /* SDL_JOYBALLMOTION */ |
| 153 Uint8 which; /* The joystick device index */ | |
| 154 Uint8 ball; /* The joystick trackball index */ | |
| 155 Sint16 xrel; /* The relative motion in the X direction */ | |
| 156 Sint16 yrel; /* The relative motion in the Y direction */ | |
| 157 } SDL_JoyBallEvent; | |
| 158 | |
| 159 /* Joystick hat position change event structure */ | |
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160 typedef struct SDL_JoyHatEvent { |
| 0 | 161 Uint8 type; /* SDL_JOYHATMOTION */ |
| 162 Uint8 which; /* The joystick device index */ | |
| 163 Uint8 hat; /* The joystick hat index */ | |
| 164 Uint8 value; /* The hat position value: | |
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165 SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP |
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166 SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT |
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167 SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN |
| 0 | 168 Note that zero means the POV is centered. |
| 169 */ | |
| 170 } SDL_JoyHatEvent; | |
| 171 | |
| 172 /* Joystick button event structure */ | |
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173 typedef struct SDL_JoyButtonEvent { |
| 0 | 174 Uint8 type; /* SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP */ |
| 175 Uint8 which; /* The joystick device index */ | |
| 176 Uint8 button; /* The joystick button index */ | |
| 177 Uint8 state; /* SDL_PRESSED or SDL_RELEASED */ | |
| 178 } SDL_JoyButtonEvent; | |
| 179 | |
| 180 /* The "window resized" event | |
| 181 When you get this event, you are responsible for setting a new video | |
| 182 mode with the new width and height. | |
| 183 */ | |
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184 typedef struct SDL_ResizeEvent { |
| 0 | 185 Uint8 type; /* SDL_VIDEORESIZE */ |
| 186 int w; /* New width */ | |
| 187 int h; /* New height */ | |
| 188 } SDL_ResizeEvent; | |
| 189 | |
| 190 /* The "screen redraw" event */ | |
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191 typedef struct SDL_ExposeEvent { |
| 0 | 192 Uint8 type; /* SDL_VIDEOEXPOSE */ |
| 193 } SDL_ExposeEvent; | |
| 194 | |
| 195 /* The "quit requested" event */ | |
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196 typedef struct SDL_QuitEvent { |
| 0 | 197 Uint8 type; /* SDL_QUIT */ |
| 198 } SDL_QuitEvent; | |
| 199 | |
| 200 /* A user-defined event type */ | |
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201 typedef struct SDL_UserEvent { |
| 0 | 202 Uint8 type; /* SDL_USEREVENT through SDL_NUMEVENTS-1 */ |
| 203 int code; /* User defined event code */ | |
| 204 void *data1; /* User defined data pointer */ | |
| 205 void *data2; /* User defined data pointer */ | |
| 206 } SDL_UserEvent; | |
| 207 | |
| 208 /* If you want to use this event, you should include SDL_syswm.h */ | |
| 209 struct SDL_SysWMmsg; | |
| 210 typedef struct SDL_SysWMmsg SDL_SysWMmsg; | |
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211 typedef struct SDL_SysWMEvent { |
| 0 | 212 Uint8 type; |
| 213 SDL_SysWMmsg *msg; | |
| 214 } SDL_SysWMEvent; | |
| 215 | |
| 216 /* General event structure */ | |
| 217 typedef union { | |
| 218 Uint8 type; | |
| 219 SDL_ActiveEvent active; | |
| 220 SDL_KeyboardEvent key; | |
| 221 SDL_MouseMotionEvent motion; | |
| 222 SDL_MouseButtonEvent button; | |
| 223 SDL_JoyAxisEvent jaxis; | |
| 224 SDL_JoyBallEvent jball; | |
| 225 SDL_JoyHatEvent jhat; | |
| 226 SDL_JoyButtonEvent jbutton; | |
| 227 SDL_ResizeEvent resize; | |
| 228 SDL_ExposeEvent expose; | |
| 229 SDL_QuitEvent quit; | |
| 230 SDL_UserEvent user; | |
| 231 SDL_SysWMEvent syswm; | |
| 232 } SDL_Event; | |
| 233 | |
| 234 | |
| 235 /* Function prototypes */ | |
| 236 | |
| 237 /* Pumps the event loop, gathering events from the input devices. | |
| 238 This function updates the event queue and internal input device state. | |
| 239 This should only be run in the thread that sets the video mode. | |
| 240 */ | |
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241 extern DECLSPEC void SDLCALL SDL_PumpEvents(void); |
| 0 | 242 |
| 243 /* Checks the event queue for messages and optionally returns them. | |
| 244 If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to | |
| 245 the back of the event queue. | |
| 246 If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front | |
| 247 of the event queue, matching 'mask', will be returned and will not | |
| 248 be removed from the queue. | |
| 249 If 'action' is SDL_GETEVENT, up to 'numevents' events at the front | |
| 250 of the event queue, matching 'mask', will be returned and will be | |
| 251 removed from the queue. | |
| 252 This function returns the number of events actually stored, or -1 | |
| 253 if there was an error. This function is thread-safe. | |
| 254 */ | |
| 255 typedef enum { | |
| 256 SDL_ADDEVENT, | |
| 257 SDL_PEEKEVENT, | |
| 258 SDL_GETEVENT | |
| 259 } SDL_eventaction; | |
| 260 /* */ | |
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261 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event *events, int numevents, |
| 0 | 262 SDL_eventaction action, Uint32 mask); |
| 263 | |
| 264 /* Polls for currently pending events, and returns 1 if there are any pending | |
| 265 events, or 0 if there are none available. If 'event' is not NULL, the next | |
| 266 event is removed from the queue and stored in that area. | |
| 267 */ | |
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268 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event *event); |
| 0 | 269 |
| 270 /* Waits indefinitely for the next available event, returning 1, or 0 if there | |
| 271 was an error while waiting for events. If 'event' is not NULL, the next | |
| 272 event is removed from the queue and stored in that area. | |
| 273 */ | |
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274 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event *event); |
| 0 | 275 |
| 276 /* Add an event to the event queue. | |
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277 This function returns 0 on success, or -1 if the event queue was full |
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278 or there was some other error. |
| 0 | 279 */ |
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280 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event *event); |
| 0 | 281 |
| 282 /* | |
| 283 This function sets up a filter to process all events before they | |
| 284 change internal state and are posted to the internal event queue. | |
| 285 | |
| 286 The filter is protypted as: | |
| 287 */ | |
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288 typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); |
| 0 | 289 /* |
| 290 If the filter returns 1, then the event will be added to the internal queue. | |
| 291 If it returns 0, then the event will be dropped from the queue, but the | |
| 292 internal state will still be updated. This allows selective filtering of | |
| 293 dynamically arriving events. | |
| 294 | |
| 295 WARNING: Be very careful of what you do in the event filter function, as | |
| 296 it may run in a different thread! | |
| 297 | |
| 298 There is one caveat when dealing with the SDL_QUITEVENT event type. The | |
| 299 event filter is only called when the window manager desires to close the | |
| 300 application window. If the event filter returns 1, then the window will | |
| 301 be closed, otherwise the window will remain open if possible. | |
| 302 If the quit event is generated by an interrupt signal, it will bypass the | |
| 303 internal queue and be delivered to the application at the next event poll. | |
| 304 */ | |
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305 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter); |
| 0 | 306 |
| 307 /* | |
| 308 Return the current event filter - can be used to "chain" filters. | |
| 309 If there is no event filter set, this function returns NULL. | |
| 310 */ | |
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311 extern DECLSPEC SDL_EventFilter SDLCALL SDL_GetEventFilter(void); |
| 0 | 312 |
| 313 /* | |
| 314 This function allows you to set the state of processing certain events. | |
| 315 If 'state' is set to SDL_IGNORE, that event will be automatically dropped | |
| 316 from the event queue and will not event be filtered. | |
| 317 If 'state' is set to SDL_ENABLE, that event will be processed normally. | |
| 318 If 'state' is set to SDL_QUERY, SDL_EventState() will return the | |
| 319 current processing state of the specified event. | |
| 320 */ | |
| 321 #define SDL_QUERY -1 | |
| 322 #define SDL_IGNORE 0 | |
| 323 #define SDL_DISABLE 0 | |
| 324 #define SDL_ENABLE 1 | |
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325 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint8 type, int state); |
| 0 | 326 |
| 327 | |
| 328 /* Ends C function definitions when using C++ */ | |
| 329 #ifdef __cplusplus | |
| 330 } | |
| 331 #endif | |
| 332 #include "close_code.h" | |
| 333 | |
| 334 #endif /* _SDL_events_h */ |