Mercurial > sdl-ios-xcode
annotate include/SDL_events.h @ 1157:baf35853ad54
Date: Mon, 10 Oct 2005 13:09:32 +0300
From: Tommi Kyntola <tommi.kyntola@ray.fi>
To: sdl@libsdl.org
Subject: [SDL] [RFC] get_ticks broken on linux
It uses gettimeofday to calculate the timedifference.
Gettimeofday returns current time which is seldom monotonous.
This breaks SDL timer subsystem. (time callbacks and all that
get borked when the time difference ms is suddenly ~ 2^32)
I posted a message about this earlier but got no response.
Some thoughts on this matter would be appreciated.
(Or even an explanation for the lack of interest.)
A patch below would use the posix timers that have been around
since posix 93 and do provide a good source of monotonous time
on linux boxes (and on few others too).
The following patch is also availabe at:
http://www.hut.fi/u/tkyntola/SDL-1.2.9-clockfix.patch
It's against 1.2.9, but I can easily rediffit against
the cvs branch is needed.
cheers,
Tommi Kyntola tommi.kyntola@ray.fi
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 11 Oct 2005 18:16:12 +0000 |
| parents | 02759105b989 |
| children | b2283b0ded26 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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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 */ | |
| 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 */ |