2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
25 * Include file for SDL event handling.
31 #include "SDL_stdinc.h"
32 #include "SDL_error.h"
33 #include "SDL_video.h"
34 #include "SDL_keyboard.h"
35 #include "SDL_mouse.h"
36 #include "SDL_joystick.h"
37 #include "SDL_gamecontroller.h"
39 #include "SDL_gesture.h"
40 #include "SDL_touch.h"
42 #include "begin_code.h"
43 /* Set up for C function definitions, even when using C++ */
48 /* General keyboard/mouse state definitions */
49 #define SDL_RELEASED 0
53 * \brief The types of events that can be delivered.
57 SDL_FIRSTEVENT = 0, /**< Unused (do not remove) */
59 /* Application events */
60 SDL_QUIT = 0x100, /**< User-requested quit */
62 /* These application events have special meaning on iOS, see README-ios.md for details */
63 SDL_APP_TERMINATING, /**< The application is being terminated by the OS
64 Called on iOS in applicationWillTerminate()
65 Called on Android in onDestroy()
67 SDL_APP_LOWMEMORY, /**< The application is low on memory, free memory if possible.
68 Called on iOS in applicationDidReceiveMemoryWarning()
69 Called on Android in onLowMemory()
71 SDL_APP_WILLENTERBACKGROUND, /**< The application is about to enter the background
72 Called on iOS in applicationWillResignActive()
73 Called on Android in onPause()
75 SDL_APP_DIDENTERBACKGROUND, /**< The application did enter the background and may not get CPU for some time
76 Called on iOS in applicationDidEnterBackground()
77 Called on Android in onPause()
79 SDL_APP_WILLENTERFOREGROUND, /**< The application is about to enter the foreground
80 Called on iOS in applicationWillEnterForeground()
81 Called on Android in onResume()
83 SDL_APP_DIDENTERFOREGROUND, /**< The application is now interactive
84 Called on iOS in applicationDidBecomeActive()
85 Called on Android in onResume()
87 SDL_APP_CONTROL, /**< The application is launching with some arguments.
88 Called on Tizen in _tizen_sdl_control().
90 SDL_APP_LOWBATTERY, /**< The application is low on battery, reduce power consumption if possible.
91 Called on Tizen in _tizen_app_low_battery().
93 SDL_APP_LANGUAGE_CHANGED, /**< The application receives this event, when displayed language is changed by system.
94 Called on Tizen in _tizen_app_lang_changed().
96 SDL_APP_REGION_CHANGED, /**< The application will receive this event, when displayed language is changed by system.
97 Called on Tizen in _tizen_app_region_changed().
100 SDL_LOCALECHANGED, /**< The user's locale preferences have changed. */
103 SDL_DISPLAYEVENT = 0x150, /**< Display state change */
106 SDL_WINDOWEVENT = 0x200, /**< Window state change */
107 SDL_SYSWMEVENT, /**< System specific event */
108 SDL_ROTATEEVENT, /**< Orientation change
109 Called on Tizen in _tizen_app_orient_changed().
112 /* Keyboard events */
113 SDL_KEYDOWN = 0x300, /**< Key pressed */
114 SDL_KEYUP, /**< Key released */
115 SDL_TEXTEDITING, /**< Keyboard text editing (composition) */
116 SDL_TEXTINPUT, /**< Keyboard text input */
117 SDL_KEYMAPCHANGED, /**< Keymap changed due to a system event such as an
118 input language or keyboard layout change.
122 SDL_MOUSEMOTION = 0x400, /**< Mouse moved */
123 SDL_MOUSEBUTTONDOWN, /**< Mouse button pressed */
124 SDL_MOUSEBUTTONUP, /**< Mouse button released */
125 SDL_MOUSEWHEEL, /**< Mouse wheel motion */
127 /* Joystick events */
128 SDL_JOYAXISMOTION = 0x600, /**< Joystick axis motion */
129 SDL_JOYBALLMOTION, /**< Joystick trackball motion */
130 SDL_JOYHATMOTION, /**< Joystick hat position change */
131 SDL_JOYBUTTONDOWN, /**< Joystick button pressed */
132 SDL_JOYBUTTONUP, /**< Joystick button released */
133 SDL_JOYDEVICEADDED, /**< A new joystick has been inserted into the system */
134 SDL_JOYDEVICEREMOVED, /**< An opened joystick has been removed */
136 /* Game controller events */
137 SDL_CONTROLLERAXISMOTION = 0x650, /**< Game controller axis motion */
138 SDL_CONTROLLERBUTTONDOWN, /**< Game controller button pressed */
139 SDL_CONTROLLERBUTTONUP, /**< Game controller button released */
140 SDL_CONTROLLERDEVICEADDED, /**< A new Game controller has been inserted into the system */
141 SDL_CONTROLLERDEVICEREMOVED, /**< An opened Game controller has been removed */
142 SDL_CONTROLLERDEVICEREMAPPED, /**< The controller mapping was updated */
143 SDL_CONTROLLERTOUCHPADDOWN, /**< Game controller touchpad was touched */
144 SDL_CONTROLLERTOUCHPADMOTION, /**< Game controller touchpad finger was moved */
145 SDL_CONTROLLERTOUCHPADUP, /**< Game controller touchpad finger was lifted */
146 SDL_CONTROLLERSENSORUPDATE, /**< Game controller sensor was updated */
149 SDL_FINGERDOWN = 0x700,
154 SDL_DOLLARGESTURE = 0x800,
158 /* Clipboard events */
159 SDL_CLIPBOARDUPDATE = 0x900, /**< The clipboard changed */
161 /* Drag and drop events */
162 SDL_DROPFILE = 0x1000, /**< The system requests a file open */
163 SDL_DROPTEXT, /**< text/plain drag-and-drop event */
164 SDL_DROPBEGIN, /**< A new set of drops is beginning (NULL filename) */
165 SDL_DROPCOMPLETE, /**< Current set of drops is now complete (NULL filename) */
167 /* Audio hotplug events */
168 SDL_AUDIODEVICEADDED = 0x1100, /**< A new audio device is available */
169 SDL_AUDIODEVICEREMOVED, /**< An audio device has been removed. */
172 SDL_SENSORUPDATE = 0x1200, /**< A sensor was updated */
175 SDL_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */
176 SDL_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */
178 /** Events ::SDL_USEREVENT through ::SDL_LASTEVENT are for your use,
179 * and should be allocated with SDL_RegisterEvents()
181 SDL_USEREVENT = 0x8000,
184 * This last event is only for bounding internal arrays
186 SDL_LASTEVENT = 0xFFFF
190 * \brief Fields shared by every event
192 typedef struct SDL_CommonEvent
195 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
199 * \brief Display state change event data (event.display.*)
201 typedef struct SDL_DisplayEvent
203 Uint32 type; /**< ::SDL_DISPLAYEVENT */
204 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
205 Uint32 display; /**< The associated display index */
206 Uint8 event; /**< ::SDL_DisplayEventID */
210 Sint32 data1; /**< event dependent data */
214 * \brief Window state change event data (event.window.*)
216 typedef struct SDL_WindowEvent
218 Uint32 type; /**< ::SDL_WINDOWEVENT */
219 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
220 Uint32 windowID; /**< The associated window */
221 Uint8 event; /**< ::SDL_WindowEventID */
225 Sint32 data1; /**< event dependent data */
226 Sint32 data2; /**< event dependent data */
230 * \brief Keyboard button event structure (event.key.*)
232 typedef struct SDL_KeyboardEvent
234 Uint32 type; /**< ::SDL_KEYDOWN or ::SDL_KEYUP */
235 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
236 Uint32 windowID; /**< The window with keyboard focus, if any */
237 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */
238 Uint8 repeat; /**< Non-zero if this is a key repeat */
241 SDL_Keysym keysym; /**< The key that was pressed or released */
244 #define SDL_TEXTEDITINGEVENT_TEXT_SIZE (32)
246 * \brief Keyboard text editing event structure (event.edit.*)
248 typedef struct SDL_TextEditingEvent
250 Uint32 type; /**< ::SDL_TEXTEDITING */
251 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
252 Uint32 windowID; /**< The window with keyboard focus, if any */
253 char text[SDL_TEXTEDITINGEVENT_TEXT_SIZE]; /**< The editing text */
254 Sint32 start; /**< The start cursor of selected editing text */
255 Sint32 length; /**< The length of selected editing text */
256 } SDL_TextEditingEvent;
259 #define SDL_TEXTINPUTEVENT_TEXT_SIZE (32)
261 * \brief Keyboard text input event structure (event.text.*)
263 typedef struct SDL_TextInputEvent
265 Uint32 type; /**< ::SDL_TEXTINPUT */
266 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
267 Uint32 windowID; /**< The window with keyboard focus, if any */
268 char text[SDL_TEXTINPUTEVENT_TEXT_SIZE]; /**< The input text */
269 } SDL_TextInputEvent;
272 * \brief Mouse motion event structure (event.motion.*)
274 typedef struct SDL_MouseMotionEvent
276 Uint32 type; /**< ::SDL_MOUSEMOTION */
277 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
278 Uint32 windowID; /**< The window with mouse focus, if any */
279 Uint32 which; /**< The mouse instance id, or SDL_TOUCH_MOUSEID */
280 Uint32 state; /**< The current button state */
281 Sint32 x; /**< X coordinate, relative to window */
282 Sint32 y; /**< Y coordinate, relative to window */
283 Sint32 xrel; /**< The relative motion in the X direction */
284 Sint32 yrel; /**< The relative motion in the Y direction */
285 } SDL_MouseMotionEvent;
288 * \brief Mouse button event structure (event.button.*)
290 typedef struct SDL_MouseButtonEvent
292 Uint32 type; /**< ::SDL_MOUSEBUTTONDOWN or ::SDL_MOUSEBUTTONUP */
293 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
294 Uint32 windowID; /**< The window with mouse focus, if any */
295 Uint32 which; /**< The mouse instance id, or SDL_TOUCH_MOUSEID */
296 Uint8 button; /**< The mouse button index */
297 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */
298 Uint8 clicks; /**< 1 for single-click, 2 for double-click, etc. */
300 Sint32 x; /**< X coordinate, relative to window */
301 Sint32 y; /**< Y coordinate, relative to window */
302 } SDL_MouseButtonEvent;
305 * \brief Mouse wheel event structure (event.wheel.*)
307 typedef struct SDL_MouseWheelEvent
309 Uint32 type; /**< ::SDL_MOUSEWHEEL */
310 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
311 Uint32 windowID; /**< The window with mouse focus, if any */
312 Uint32 which; /**< The mouse instance id, or SDL_TOUCH_MOUSEID */
313 Sint32 x; /**< The amount scrolled horizontally, positive to the right and negative to the left */
314 Sint32 y; /**< The amount scrolled vertically, positive away from the user and negative toward the user */
315 Uint32 direction; /**< Set to one of the SDL_MOUSEWHEEL_* defines. When FLIPPED the values in X and Y will be opposite. Multiply by -1 to change them back */
316 } SDL_MouseWheelEvent;
319 * \brief Joystick axis motion event structure (event.jaxis.*)
321 typedef struct SDL_JoyAxisEvent
323 Uint32 type; /**< ::SDL_JOYAXISMOTION */
324 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
325 SDL_JoystickID which; /**< The joystick instance id */
326 Uint8 axis; /**< The joystick axis index */
330 Sint16 value; /**< The axis value (range: -32768 to 32767) */
335 * \brief Joystick trackball motion event structure (event.jball.*)
337 typedef struct SDL_JoyBallEvent
339 Uint32 type; /**< ::SDL_JOYBALLMOTION */
340 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
341 SDL_JoystickID which; /**< The joystick instance id */
342 Uint8 ball; /**< The joystick trackball index */
346 Sint16 xrel; /**< The relative motion in the X direction */
347 Sint16 yrel; /**< The relative motion in the Y direction */
351 * \brief Joystick hat position change event structure (event.jhat.*)
353 typedef struct SDL_JoyHatEvent
355 Uint32 type; /**< ::SDL_JOYHATMOTION */
356 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
357 SDL_JoystickID which; /**< The joystick instance id */
358 Uint8 hat; /**< The joystick hat index */
359 Uint8 value; /**< The hat position value.
360 * \sa ::SDL_HAT_LEFTUP ::SDL_HAT_UP ::SDL_HAT_RIGHTUP
361 * \sa ::SDL_HAT_LEFT ::SDL_HAT_CENTERED ::SDL_HAT_RIGHT
362 * \sa ::SDL_HAT_LEFTDOWN ::SDL_HAT_DOWN ::SDL_HAT_RIGHTDOWN
364 * Note that zero means the POV is centered.
371 * \brief Joystick button event structure (event.jbutton.*)
373 typedef struct SDL_JoyButtonEvent
375 Uint32 type; /**< ::SDL_JOYBUTTONDOWN or ::SDL_JOYBUTTONUP */
376 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
377 SDL_JoystickID which; /**< The joystick instance id */
378 Uint8 button; /**< The joystick button index */
379 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */
382 } SDL_JoyButtonEvent;
385 * \brief Joystick device event structure (event.jdevice.*)
387 typedef struct SDL_JoyDeviceEvent
389 Uint32 type; /**< ::SDL_JOYDEVICEADDED or ::SDL_JOYDEVICEREMOVED */
390 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
391 Sint32 which; /**< The joystick device index for the ADDED event, instance id for the REMOVED event */
392 } SDL_JoyDeviceEvent;
396 * \brief Game controller axis motion event structure (event.caxis.*)
398 typedef struct SDL_ControllerAxisEvent
400 Uint32 type; /**< ::SDL_CONTROLLERAXISMOTION */
401 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
402 SDL_JoystickID which; /**< The joystick instance id */
403 Uint8 axis; /**< The controller axis (SDL_GameControllerAxis) */
407 Sint16 value; /**< The axis value (range: -32768 to 32767) */
409 } SDL_ControllerAxisEvent;
413 * \brief Game controller button event structure (event.cbutton.*)
415 typedef struct SDL_ControllerButtonEvent
417 Uint32 type; /**< ::SDL_CONTROLLERBUTTONDOWN or ::SDL_CONTROLLERBUTTONUP */
418 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
419 SDL_JoystickID which; /**< The joystick instance id */
420 Uint8 button; /**< The controller button (SDL_GameControllerButton) */
421 Uint8 state; /**< ::SDL_PRESSED or ::SDL_RELEASED */
424 } SDL_ControllerButtonEvent;
428 * \brief Controller device event structure (event.cdevice.*)
430 typedef struct SDL_ControllerDeviceEvent
432 Uint32 type; /**< ::SDL_CONTROLLERDEVICEADDED, ::SDL_CONTROLLERDEVICEREMOVED, or ::SDL_CONTROLLERDEVICEREMAPPED */
433 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
434 Sint32 which; /**< The joystick device index for the ADDED event, instance id for the REMOVED or REMAPPED event */
435 } SDL_ControllerDeviceEvent;
438 * \brief Game controller touchpad event structure (event.ctouchpad.*)
440 typedef struct SDL_ControllerTouchpadEvent
442 Uint32 type; /**< ::SDL_CONTROLLERTOUCHPADDOWN or ::SDL_CONTROLLERTOUCHPADMOTION or ::SDL_CONTROLLERTOUCHPADUP */
443 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
444 SDL_JoystickID which; /**< The joystick instance id */
445 Sint32 touchpad; /**< The index of the touchpad */
446 Sint32 finger; /**< The index of the finger on the touchpad */
447 float x; /**< Normalized in the range 0...1 with 0 being on the left */
448 float y; /**< Normalized in the range 0...1 with 0 being at the top */
449 float pressure; /**< Normalized in the range 0...1 */
450 } SDL_ControllerTouchpadEvent;
453 * \brief Game controller sensor event structure (event.csensor.*)
455 typedef struct SDL_ControllerSensorEvent
457 Uint32 type; /**< ::SDL_CONTROLLERSENSORUPDATE */
458 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
459 SDL_JoystickID which; /**< The joystick instance id */
460 Sint32 sensor; /**< The type of the sensor, one of the values of ::SDL_SensorType */
461 float data[3]; /**< Up to 3 values from the sensor, as defined in SDL_sensor.h */
462 } SDL_ControllerSensorEvent;
465 * \brief Audio device event structure (event.adevice.*)
467 typedef struct SDL_AudioDeviceEvent
469 Uint32 type; /**< ::SDL_AUDIODEVICEADDED, or ::SDL_AUDIODEVICEREMOVED */
470 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
471 Uint32 which; /**< The audio device index for the ADDED event (valid until next SDL_GetNumAudioDevices() call), SDL_AudioDeviceID for the REMOVED event */
472 Uint8 iscapture; /**< zero if an output device, non-zero if a capture device. */
476 } SDL_AudioDeviceEvent;
480 * \brief Touch finger event structure (event.tfinger.*)
482 typedef struct SDL_TouchFingerEvent
484 Uint32 type; /**< ::SDL_FINGERMOTION or ::SDL_FINGERDOWN or ::SDL_FINGERUP */
485 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
486 SDL_TouchID touchId; /**< The touch device id */
487 SDL_FingerID fingerId;
488 float x; /**< Normalized in the range 0...1 */
489 float y; /**< Normalized in the range 0...1 */
490 float dx; /**< Normalized in the range -1...1 */
491 float dy; /**< Normalized in the range -1...1 */
492 float pressure; /**< Normalized in the range 0...1 */
493 Uint32 windowID; /**< The window underneath the finger, if any */
494 } SDL_TouchFingerEvent;
498 * \brief Multiple Finger Gesture Event (event.mgesture.*)
500 typedef struct SDL_MultiGestureEvent
502 Uint32 type; /**< ::SDL_MULTIGESTURE */
503 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
504 SDL_TouchID touchId; /**< The touch device id */
511 } SDL_MultiGestureEvent;
515 * \brief Dollar Gesture Event (event.dgesture.*)
517 typedef struct SDL_DollarGestureEvent
519 Uint32 type; /**< ::SDL_DOLLARGESTURE or ::SDL_DOLLARRECORD */
520 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
521 SDL_TouchID touchId; /**< The touch device id */
522 SDL_GestureID gestureId;
525 float x; /**< Normalized center of gesture */
526 float y; /**< Normalized center of gesture */
527 } SDL_DollarGestureEvent;
531 * \brief An event used to request a file open by the system (event.drop.*)
532 * This event is enabled by default, you can disable it with SDL_EventState().
533 * \note If this event is enabled, you must free the filename in the event.
535 typedef struct SDL_DropEvent
537 Uint32 type; /**< ::SDL_DROPBEGIN or ::SDL_DROPFILE or ::SDL_DROPTEXT or ::SDL_DROPCOMPLETE */
538 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
539 char *file; /**< The file name, which should be freed with SDL_free(), is NULL on begin/complete */
540 Uint32 windowID; /**< The window that was dropped on, if any */
545 * \brief Sensor event structure (event.sensor.*)
547 typedef struct SDL_SensorEvent
549 Uint32 type; /**< ::SDL_SENSORUPDATE */
550 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
551 Sint32 which; /**< The instance ID of the sensor */
552 float data[6]; /**< Up to 6 values from the sensor - additional values can be queried using SDL_SensorGetData() */
556 * \brief The "quit requested" event
558 typedef struct SDL_QuitEvent
560 Uint32 type; /**< ::SDL_QUIT */
561 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
565 * \brief OS Specific event
567 typedef struct SDL_OSEvent
569 Uint32 type; /**< ::SDL_QUIT */
570 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
574 * \brief A user-defined event type (event.user.*)
576 typedef struct SDL_UserEvent
578 Uint32 type; /**< ::SDL_USEREVENT through ::SDL_LASTEVENT-1 */
579 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
580 Uint32 windowID; /**< The associated window if any */
581 Sint32 code; /**< User defined event code */
582 void *data1; /**< User defined data pointer */
583 void *data2; /**< User defined data pointer */
588 typedef struct SDL_SysWMmsg SDL_SysWMmsg;
591 * \brief A video driver dependent system event (event.syswm.*)
592 * This event is disabled by default, you can enable it with SDL_EventState()
594 * \note If you want to use this event, you should include SDL_syswm.h.
596 typedef struct SDL_SysWMEvent
598 Uint32 type; /**< ::SDL_SYSWMEVENT */
599 Uint32 timestamp; /**< In milliseconds, populated using SDL_GetTicks() */
600 SDL_SysWMmsg *msg; /**< driver dependent data, defined in SDL_syswm.h */
604 * \brief General event structure
606 typedef union SDL_Event
608 Uint32 type; /**< Event type, shared with all events */
609 SDL_CommonEvent common; /**< Common event data */
610 SDL_DisplayEvent display; /**< Display event data */
611 SDL_WindowEvent window; /**< Window event data */
612 SDL_KeyboardEvent key; /**< Keyboard event data */
613 SDL_TextEditingEvent edit; /**< Text editing event data */
614 SDL_TextInputEvent text; /**< Text input event data */
615 SDL_MouseMotionEvent motion; /**< Mouse motion event data */
616 SDL_MouseButtonEvent button; /**< Mouse button event data */
617 SDL_MouseWheelEvent wheel; /**< Mouse wheel event data */
618 SDL_JoyAxisEvent jaxis; /**< Joystick axis event data */
619 SDL_JoyBallEvent jball; /**< Joystick ball event data */
620 SDL_JoyHatEvent jhat; /**< Joystick hat event data */
621 SDL_JoyButtonEvent jbutton; /**< Joystick button event data */
622 SDL_JoyDeviceEvent jdevice; /**< Joystick device change event data */
623 SDL_ControllerAxisEvent caxis; /**< Game Controller axis event data */
624 SDL_ControllerButtonEvent cbutton; /**< Game Controller button event data */
625 SDL_ControllerDeviceEvent cdevice; /**< Game Controller device event data */
626 SDL_ControllerTouchpadEvent ctouchpad; /**< Game Controller touchpad event data */
627 SDL_ControllerSensorEvent csensor; /**< Game Controller sensor event data */
628 SDL_AudioDeviceEvent adevice; /**< Audio device event data */
629 SDL_SensorEvent sensor; /**< Sensor event data */
630 SDL_QuitEvent quit; /**< Quit request event data */
631 SDL_UserEvent user; /**< Custom event data */
632 SDL_SysWMEvent syswm; /**< System dependent window event data */
633 SDL_TouchFingerEvent tfinger; /**< Touch finger event data */
634 SDL_MultiGestureEvent mgesture; /**< Gesture event data */
635 SDL_DollarGestureEvent dgesture; /**< Gesture event data */
636 SDL_DropEvent drop; /**< Drag and drop event data */
638 /* This is necessary for ABI compatibility between Visual C++ and GCC
639 Visual C++ will respect the push pack pragma and use 52 bytes for
640 this structure, and GCC will use the alignment of the largest datatype
641 within the union, which is 8 bytes.
643 So... we'll add padding to force the size to be 56 bytes for both.
648 /* Make sure we haven't broken binary compatibility */
649 SDL_COMPILE_TIME_ASSERT(SDL_Event, sizeof(SDL_Event) == 56);
652 /* Function prototypes */
655 * Pumps the event loop, gathering events from the input devices.
657 * This function updates the event queue and internal input device state.
659 * This should only be run in the thread that sets the video mode.
661 extern DECLSPEC void SDLCALL SDL_PumpEvents(void);
672 * Checks the event queue for messages and optionally returns them.
674 * If \c action is ::SDL_ADDEVENT, up to \c numevents events will be added to
675 * the back of the event queue.
677 * If \c action is ::SDL_PEEKEVENT, up to \c numevents events at the front
678 * of the event queue, within the specified minimum and maximum type,
679 * will be returned and will not be removed from the queue.
681 * If \c action is ::SDL_GETEVENT, up to \c numevents events at the front
682 * of the event queue, within the specified minimum and maximum type,
683 * will be returned and will be removed from the queue.
685 * \return The number of events actually stored, or -1 if there was an error.
687 * This function is thread-safe.
689 extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event * events, int numevents,
690 SDL_eventaction action,
691 Uint32 minType, Uint32 maxType);
695 * Checks to see if certain event types are in the event queue.
697 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvent(Uint32 type);
698 extern DECLSPEC SDL_bool SDLCALL SDL_HasEvents(Uint32 minType, Uint32 maxType);
701 * This function clears events from the event queue
702 * This function only affects currently queued events. If you want to make
703 * sure that all pending OS events are flushed, you can call SDL_PumpEvents()
704 * on the main thread immediately before the flush call.
706 extern DECLSPEC void SDLCALL SDL_FlushEvent(Uint32 type);
707 extern DECLSPEC void SDLCALL SDL_FlushEvents(Uint32 minType, Uint32 maxType);
710 * \brief Polls for currently pending events.
712 * \return 1 if there are any pending events, or 0 if there are none available.
714 * \param event If not NULL, the next event is removed from the queue and
715 * stored in that area.
717 extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event * event);
720 * \brief Waits indefinitely for the next available event.
722 * \return 1, or 0 if there was an error while waiting for events.
724 * \param event If not NULL, the next event is removed from the queue and
725 * stored in that area.
727 extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event * event);
730 * \brief Waits until the specified timeout (in milliseconds) for the next
733 * \return 1, or 0 if there was an error while waiting for events.
735 * \param event If not NULL, the next event is removed from the queue and
736 * stored in that area.
737 * \param timeout The timeout (in milliseconds) to wait for next event.
739 extern DECLSPEC int SDLCALL SDL_WaitEventTimeout(SDL_Event * event,
743 * \brief Add an event to the event queue.
745 * \return 1 on success, 0 if the event was filtered, or -1 if the event queue
746 * was full or there was some other error.
748 extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event * event);
750 typedef int (SDLCALL * SDL_EventFilter) (void *userdata, SDL_Event * event);
753 * Sets up a filter to process all events before they change internal state and
754 * are posted to the internal event queue.
756 * The filter is prototyped as:
758 * int SDL_EventFilter(void *userdata, SDL_Event * event);
761 * If the filter returns 1, then the event will be added to the internal queue.
762 * If it returns 0, then the event will be dropped from the queue, but the
763 * internal state will still be updated. This allows selective filtering of
764 * dynamically arriving events.
766 * \warning Be very careful of what you do in the event filter function, as
767 * it may run in a different thread!
769 * There is one caveat when dealing with the ::SDL_QuitEvent event type. The
770 * event filter is only called when the window manager desires to close the
771 * application window. If the event filter returns 1, then the window will
772 * be closed, otherwise the window will remain open if possible.
774 * If the quit event is generated by an interrupt signal, it will bypass the
775 * internal queue and be delivered to the application at the next event poll.
777 extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter,
781 * Return the current event filter - can be used to "chain" filters.
782 * If there is no event filter set, this function returns SDL_FALSE.
784 extern DECLSPEC SDL_bool SDLCALL SDL_GetEventFilter(SDL_EventFilter * filter,
788 * Add a function which is called when an event is added to the queue.
790 extern DECLSPEC void SDLCALL SDL_AddEventWatch(SDL_EventFilter filter,
794 * Remove an event watch function added with SDL_AddEventWatch()
796 extern DECLSPEC void SDLCALL SDL_DelEventWatch(SDL_EventFilter filter,
800 * Run the filter function on the current event queue, removing any
801 * events for which the filter returns 0.
803 extern DECLSPEC void SDLCALL SDL_FilterEvents(SDL_EventFilter filter,
809 #define SDL_DISABLE 0
813 * This function allows you to set the state of processing certain events.
814 * - If \c state is set to ::SDL_IGNORE, that event will be automatically
815 * dropped from the event queue and will not be filtered.
816 * - If \c state is set to ::SDL_ENABLE, that event will be processed
818 * - If \c state is set to ::SDL_QUERY, SDL_EventState() will return the
819 * current processing state of the specified event.
821 extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint32 type, int state);
823 #define SDL_GetEventState(type) SDL_EventState(type, SDL_QUERY)
826 * This function allocates a set of user-defined events, and returns
827 * the beginning event number for that set of events.
829 * If there aren't enough user-defined events left, this function
832 extern DECLSPEC Uint32 SDLCALL SDL_RegisterEvents(int numevents);
834 /* Ends C function definitions when using C++ */
838 #include "close_code.h"
840 #endif /* SDL_events_h_ */
842 /* vi: set ts=4 sw=4 expandtab: */