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Diffstat (limited to 'code/SDL12/include/SDL_events.h')
| -rw-r--r-- | code/SDL12/include/SDL_events.h | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/code/SDL12/include/SDL_events.h b/code/SDL12/include/SDL_events.h new file mode 100644 index 0000000..c94a30c --- /dev/null +++ b/code/SDL12/include/SDL_events.h @@ -0,0 +1,356 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2009 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ + +/** + * @file SDL_events.h + * Include file for SDL event handling + */ + +#ifndef _SDL_events_h +#define _SDL_events_h + +#include "SDL_stdinc.h" +#include "SDL_error.h" +#include "SDL_active.h" +#include "SDL_keyboard.h" +#include "SDL_mouse.h" +#include "SDL_joystick.h" +#include "SDL_quit.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/** @name General keyboard/mouse state definitions */ +/*@{*/ +#define SDL_RELEASED 0 +#define SDL_PRESSED 1 +/*@}*/ + +/** Event enumerations */ +typedef enum { + SDL_NOEVENT = 0, /**< Unused (do not remove) */ + SDL_ACTIVEEVENT, /**< Application loses/gains visibility */ + SDL_KEYDOWN, /**< Keys pressed */ + SDL_KEYUP, /**< Keys released */ + SDL_MOUSEMOTION, /**< Mouse moved */ + SDL_MOUSEBUTTONDOWN, /**< Mouse button pressed */ + SDL_MOUSEBUTTONUP, /**< Mouse button released */ + SDL_JOYAXISMOTION, /**< Joystick axis motion */ + SDL_JOYBALLMOTION, /**< Joystick trackball motion */ + SDL_JOYHATMOTION, /**< Joystick hat position change */ + SDL_JOYBUTTONDOWN, /**< Joystick button pressed */ + SDL_JOYBUTTONUP, /**< Joystick button released */ + SDL_QUIT, /**< User-requested quit */ + SDL_SYSWMEVENT, /**< System specific event */ + SDL_EVENT_RESERVEDA, /**< Reserved for future use.. */ + SDL_EVENT_RESERVEDB, /**< Reserved for future use.. */ + SDL_VIDEORESIZE, /**< User resized video mode */ + SDL_VIDEOEXPOSE, /**< Screen needs to be redrawn */ + SDL_EVENT_RESERVED2, /**< Reserved for future use.. */ + SDL_EVENT_RESERVED3, /**< Reserved for future use.. */ + SDL_EVENT_RESERVED4, /**< Reserved for future use.. */ + SDL_EVENT_RESERVED5, /**< Reserved for future use.. */ + SDL_EVENT_RESERVED6, /**< Reserved for future use.. */ + SDL_EVENT_RESERVED7, /**< Reserved for future use.. */ + /** Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use */ + SDL_USEREVENT = 24, + /** This last event is only for bounding internal arrays + * It is the number of bits in the event mask datatype -- Uint32 + */ + SDL_NUMEVENTS = 32 +} SDL_EventType; + +/** @name Predefined event masks */ +/*@{*/ +#define SDL_EVENTMASK(X) (1<<(X)) +typedef enum { + SDL_ACTIVEEVENTMASK = SDL_EVENTMASK(SDL_ACTIVEEVENT), + SDL_KEYDOWNMASK = SDL_EVENTMASK(SDL_KEYDOWN), + SDL_KEYUPMASK = SDL_EVENTMASK(SDL_KEYUP), + SDL_KEYEVENTMASK = SDL_EVENTMASK(SDL_KEYDOWN)| + SDL_EVENTMASK(SDL_KEYUP), + SDL_MOUSEMOTIONMASK = SDL_EVENTMASK(SDL_MOUSEMOTION), + SDL_MOUSEBUTTONDOWNMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN), + SDL_MOUSEBUTTONUPMASK = SDL_EVENTMASK(SDL_MOUSEBUTTONUP), + SDL_MOUSEEVENTMASK = SDL_EVENTMASK(SDL_MOUSEMOTION)| + SDL_EVENTMASK(SDL_MOUSEBUTTONDOWN)| + SDL_EVENTMASK(SDL_MOUSEBUTTONUP), + SDL_JOYAXISMOTIONMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION), + SDL_JOYBALLMOTIONMASK = SDL_EVENTMASK(SDL_JOYBALLMOTION), + SDL_JOYHATMOTIONMASK = SDL_EVENTMASK(SDL_JOYHATMOTION), + SDL_JOYBUTTONDOWNMASK = SDL_EVENTMASK(SDL_JOYBUTTONDOWN), + SDL_JOYBUTTONUPMASK = SDL_EVENTMASK(SDL_JOYBUTTONUP), + SDL_JOYEVENTMASK = SDL_EVENTMASK(SDL_JOYAXISMOTION)| + SDL_EVENTMASK(SDL_JOYBALLMOTION)| + SDL_EVENTMASK(SDL_JOYHATMOTION)| + SDL_EVENTMASK(SDL_JOYBUTTONDOWN)| + SDL_EVENTMASK(SDL_JOYBUTTONUP), + SDL_VIDEORESIZEMASK = SDL_EVENTMASK(SDL_VIDEORESIZE), + SDL_VIDEOEXPOSEMASK = SDL_EVENTMASK(SDL_VIDEOEXPOSE), + SDL_QUITMASK = SDL_EVENTMASK(SDL_QUIT), + SDL_SYSWMEVENTMASK = SDL_EVENTMASK(SDL_SYSWMEVENT) +} SDL_EventMask ; +#define SDL_ALLEVENTS 0xFFFFFFFF +/*@}*/ + +/** Application visibility event structure */ +typedef struct SDL_ActiveEvent { + Uint8 type; /**< SDL_ACTIVEEVENT */ + Uint8 gain; /**< Whether given states were gained or lost (1/0) */ + Uint8 state; /**< A mask of the focus states */ +} SDL_ActiveEvent; + +/** Keyboard event structure */ +typedef struct SDL_KeyboardEvent { + Uint8 type; /**< SDL_KEYDOWN or SDL_KEYUP */ + Uint8 which; /**< The keyboard device index */ + Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ + SDL_keysym keysym; +} SDL_KeyboardEvent; + +/** Mouse motion event structure */ +typedef struct SDL_MouseMotionEvent { + Uint8 type; /**< SDL_MOUSEMOTION */ + Uint8 which; /**< The mouse device index */ + Uint8 state; /**< The current button state */ + Uint16 x, y; /**< The X/Y coordinates of the mouse */ + Sint16 xrel; /**< The relative motion in the X direction */ + Sint16 yrel; /**< The relative motion in the Y direction */ +} SDL_MouseMotionEvent; + +/** Mouse button event structure */ +typedef struct SDL_MouseButtonEvent { + Uint8 type; /**< SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP */ + Uint8 which; /**< The mouse device index */ + Uint8 button; /**< The mouse button index */ + Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ + Uint16 x, y; /**< The X/Y coordinates of the mouse at press time */ +} SDL_MouseButtonEvent; + +/** Joystick axis motion event structure */ +typedef struct SDL_JoyAxisEvent { + Uint8 type; /**< SDL_JOYAXISMOTION */ + Uint8 which; /**< The joystick device index */ + Uint8 axis; /**< The joystick axis index */ + Sint16 value; /**< The axis value (range: -32768 to 32767) */ +} SDL_JoyAxisEvent; + +/** Joystick trackball motion event structure */ +typedef struct SDL_JoyBallEvent { + Uint8 type; /**< SDL_JOYBALLMOTION */ + Uint8 which; /**< The joystick device index */ + Uint8 ball; /**< The joystick trackball index */ + Sint16 xrel; /**< The relative motion in the X direction */ + Sint16 yrel; /**< The relative motion in the Y direction */ +} SDL_JoyBallEvent; + +/** Joystick hat position change event structure */ +typedef struct SDL_JoyHatEvent { + Uint8 type; /**< SDL_JOYHATMOTION */ + Uint8 which; /**< The joystick device index */ + Uint8 hat; /**< The joystick hat index */ + Uint8 value; /**< The hat position value: + * SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP + * SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT + * SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN + * Note that zero means the POV is centered. + */ +} SDL_JoyHatEvent; + +/** Joystick button event structure */ +typedef struct SDL_JoyButtonEvent { + Uint8 type; /**< SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP */ + Uint8 which; /**< The joystick device index */ + Uint8 button; /**< The joystick button index */ + Uint8 state; /**< SDL_PRESSED or SDL_RELEASED */ +} SDL_JoyButtonEvent; + +/** The "window resized" event + * When you get this event, you are responsible for setting a new video + * mode with the new width and height. + */ +typedef struct SDL_ResizeEvent { + Uint8 type; /**< SDL_VIDEORESIZE */ + int w; /**< New width */ + int h; /**< New height */ +} SDL_ResizeEvent; + +/** The "screen redraw" event */ +typedef struct SDL_ExposeEvent { + Uint8 type; /**< SDL_VIDEOEXPOSE */ +} SDL_ExposeEvent; + +/** The "quit requested" event */ +typedef struct SDL_QuitEvent { + Uint8 type; /**< SDL_QUIT */ +} SDL_QuitEvent; + +/** A user-defined event type */ +typedef struct SDL_UserEvent { + Uint8 type; /**< SDL_USEREVENT through SDL_NUMEVENTS-1 */ + int code; /**< User defined event code */ + void *data1; /**< User defined data pointer */ + void *data2; /**< User defined data pointer */ +} SDL_UserEvent; + +/** If you want to use this event, you should include SDL_syswm.h */ +struct SDL_SysWMmsg; +typedef struct SDL_SysWMmsg SDL_SysWMmsg; +typedef struct SDL_SysWMEvent { + Uint8 type; + SDL_SysWMmsg *msg; +} SDL_SysWMEvent; + +/** General event structure */ +typedef union SDL_Event { + Uint8 type; + SDL_ActiveEvent active; + SDL_KeyboardEvent key; + SDL_MouseMotionEvent motion; + SDL_MouseButtonEvent button; + SDL_JoyAxisEvent jaxis; + SDL_JoyBallEvent jball; + SDL_JoyHatEvent jhat; + SDL_JoyButtonEvent jbutton; + SDL_ResizeEvent resize; + SDL_ExposeEvent expose; + SDL_QuitEvent quit; + SDL_UserEvent user; + SDL_SysWMEvent syswm; +} SDL_Event; + + +/* Function prototypes */ + +/** Pumps the event loop, gathering events from the input devices. + * This function updates the event queue and internal input device state. + * This should only be run in the thread that sets the video mode. + */ +extern DECLSPEC void SDLCALL SDL_PumpEvents(void); + +typedef enum { + SDL_ADDEVENT, + SDL_PEEKEVENT, + SDL_GETEVENT +} SDL_eventaction; + +/** + * Checks the event queue for messages and optionally returns them. + * + * If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to + * the back of the event queue. + * If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front + * of the event queue, matching 'mask', will be returned and will not + * be removed from the queue. + * If 'action' is SDL_GETEVENT, up to 'numevents' events at the front + * of the event queue, matching 'mask', will be returned and will be + * removed from the queue. + * + * @return + * This function returns the number of events actually stored, or -1 + * if there was an error. + * + * This function is thread-safe. + */ +extern DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event *events, int numevents, + SDL_eventaction action, Uint32 mask); + +/** Polls for currently pending events, and returns 1 if there are any pending + * events, or 0 if there are none available. If 'event' is not NULL, the next + * event is removed from the queue and stored in that area. + */ +extern DECLSPEC int SDLCALL SDL_PollEvent(SDL_Event *event); + +/** Waits indefinitely for the next available event, returning 1, or 0 if there + * was an error while waiting for events. If 'event' is not NULL, the next + * event is removed from the queue and stored in that area. + */ +extern DECLSPEC int SDLCALL SDL_WaitEvent(SDL_Event *event); + +/** Add an event to the event queue. + * This function returns 0 on success, or -1 if the event queue was full + * or there was some other error. + */ +extern DECLSPEC int SDLCALL SDL_PushEvent(SDL_Event *event); + +/** @name Event Filtering */ +/*@{*/ +typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); +/** + * This function sets up a filter to process all events before they + * change internal state and are posted to the internal event queue. + * + * The filter is protypted as: + * @code typedef int (SDLCALL *SDL_EventFilter)(const SDL_Event *event); @endcode + * + * If the filter returns 1, then the event will be added to the internal queue. + * If it returns 0, then the event will be dropped from the queue, but the + * internal state will still be updated. This allows selective filtering of + * dynamically arriving events. + * + * @warning Be very careful of what you do in the event filter function, as + * it may run in a different thread! + * + * There is one caveat when dealing with the SDL_QUITEVENT event type. The + * event filter is only called when the window manager desires to close the + * application window. If the event filter returns 1, then the window will + * be closed, otherwise the window will remain open if possible. + * If the quit event is generated by an interrupt signal, it will bypass the + * internal queue and be delivered to the application at the next event poll. + */ +extern DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter); + +/** + * Return the current event filter - can be used to "chain" filters. + * If there is no event filter set, this function returns NULL. + */ +extern DECLSPEC SDL_EventFilter SDLCALL SDL_GetEventFilter(void); +/*@}*/ + +/** @name Event State */ +/*@{*/ +#define SDL_QUERY -1 +#define SDL_IGNORE 0 +#define SDL_DISABLE 0 +#define SDL_ENABLE 1 +/*@}*/ + +/** +* This function allows you to set the state of processing certain events. +* If 'state' is set to SDL_IGNORE, that event will be automatically dropped +* from the event queue and will not event be filtered. +* If 'state' is set to SDL_ENABLE, that event will be processed normally. +* If 'state' is set to SDL_QUERY, SDL_EventState() will return the +* current processing state of the specified event. +*/ +extern DECLSPEC Uint8 SDLCALL SDL_EventState(Uint8 type, int state); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* _SDL_events_h */ |