Mercurial > foo_out_sdl
diff SDL3/SDL_events.h @ 1:20d02a178406 default tip
*: check in everything else
yay
| author | Paper <paper@tflc.us> |
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| date | Mon, 05 Jan 2026 02:15:46 -0500 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDL3/SDL_events.h Mon Jan 05 02:15:46 2026 -0500 @@ -0,0 +1,1647 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * # CategoryEvents + * + * Event queue management. + * + * It's extremely common--often required--that an app deal with SDL's event + * queue. Almost all useful information about interactions with the real world + * flow through here: the user interacting with the computer and app, hardware + * coming and going, the system changing in some way, etc. + * + * An app generally takes a moment, perhaps at the start of a new frame, to + * examine any events that have occurred since the last time and process or + * ignore them. This is generally done by calling SDL_PollEvent() in a loop + * until it returns false (or, if using the main callbacks, events are + * provided one at a time in calls to SDL_AppEvent() before the next call to + * SDL_AppIterate(); in this scenario, the app does not call SDL_PollEvent() + * at all). + * + * There is other forms of control, too: SDL_PeepEvents() has more + * functionality at the cost of more complexity, and SDL_WaitEvent() can block + * the process until something interesting happens, which might be beneficial + * for certain types of programs on low-power hardware. One may also call + * SDL_AddEventWatch() to set a callback when new events arrive. + * + * The app is free to generate their own events, too: SDL_PushEvent allows the + * app to put events onto the queue for later retrieval; SDL_RegisterEvents + * can guarantee that these events have a type that isn't in use by other + * parts of the system. + */ + +#ifndef SDL_events_h_ +#define SDL_events_h_ + +#include <SDL3/SDL_stdinc.h> +#include <SDL3/SDL_audio.h> +#include <SDL3/SDL_camera.h> +#include <SDL3/SDL_error.h> +#include <SDL3/SDL_gamepad.h> +#include <SDL3/SDL_joystick.h> +#include <SDL3/SDL_keyboard.h> +#include <SDL3/SDL_keycode.h> +#include <SDL3/SDL_mouse.h> +#include <SDL3/SDL_pen.h> +#include <SDL3/SDL_power.h> +#include <SDL3/SDL_sensor.h> +#include <SDL3/SDL_scancode.h> +#include <SDL3/SDL_touch.h> +#include <SDL3/SDL_video.h> + +#include <SDL3/SDL_begin_code.h> +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/* General keyboard/mouse/pen state definitions */ + +/** + * The types of events that can be delivered. + * + * \since This enum is available since SDL 3.2.0. + */ +typedef enum SDL_EventType +{ + SDL_EVENT_FIRST = 0, /**< Unused (do not remove) */ + + /* Application events */ + SDL_EVENT_QUIT = 0x100, /**< User-requested quit */ + + /* These application events have special meaning on iOS and Android, see README-ios.md and README-android.md for details */ + SDL_EVENT_TERMINATING, /**< The application is being terminated by the OS. This event must be handled in a callback set with SDL_AddEventWatch(). + Called on iOS in applicationWillTerminate() + Called on Android in onDestroy() + */ + SDL_EVENT_LOW_MEMORY, /**< The application is low on memory, free memory if possible. This event must be handled in a callback set with SDL_AddEventWatch(). + Called on iOS in applicationDidReceiveMemoryWarning() + Called on Android in onTrimMemory() + */ + SDL_EVENT_WILL_ENTER_BACKGROUND, /**< The application is about to enter the background. This event must be handled in a callback set with SDL_AddEventWatch(). + Called on iOS in applicationWillResignActive() + Called on Android in onPause() + */ + SDL_EVENT_DID_ENTER_BACKGROUND, /**< The application did enter the background and may not get CPU for some time. This event must be handled in a callback set with SDL_AddEventWatch(). + Called on iOS in applicationDidEnterBackground() + Called on Android in onPause() + */ + SDL_EVENT_WILL_ENTER_FOREGROUND, /**< The application is about to enter the foreground. This event must be handled in a callback set with SDL_AddEventWatch(). + Called on iOS in applicationWillEnterForeground() + Called on Android in onResume() + */ + SDL_EVENT_DID_ENTER_FOREGROUND, /**< The application is now interactive. This event must be handled in a callback set with SDL_AddEventWatch(). + Called on iOS in applicationDidBecomeActive() + Called on Android in onResume() + */ + + SDL_EVENT_LOCALE_CHANGED, /**< The user's locale preferences have changed. */ + + SDL_EVENT_SYSTEM_THEME_CHANGED, /**< The system theme changed */ + + /* Display events */ + /* 0x150 was SDL_DISPLAYEVENT, reserve the number for sdl2-compat */ + SDL_EVENT_DISPLAY_ORIENTATION = 0x151, /**< Display orientation has changed to data1 */ + SDL_EVENT_DISPLAY_ADDED, /**< Display has been added to the system */ + SDL_EVENT_DISPLAY_REMOVED, /**< Display has been removed from the system */ + SDL_EVENT_DISPLAY_MOVED, /**< Display has changed position */ + SDL_EVENT_DISPLAY_DESKTOP_MODE_CHANGED, /**< Display has changed desktop mode */ + SDL_EVENT_DISPLAY_CURRENT_MODE_CHANGED, /**< Display has changed current mode */ + SDL_EVENT_DISPLAY_CONTENT_SCALE_CHANGED, /**< Display has changed content scale */ + SDL_EVENT_DISPLAY_USABLE_BOUNDS_CHANGED, /**< Display has changed usable bounds */ + SDL_EVENT_DISPLAY_FIRST = SDL_EVENT_DISPLAY_ORIENTATION, + SDL_EVENT_DISPLAY_LAST = SDL_EVENT_DISPLAY_USABLE_BOUNDS_CHANGED, + + /* Window events */ + /* 0x200 was SDL_WINDOWEVENT, reserve the number for sdl2-compat */ + /* 0x201 was SDL_SYSWMEVENT, reserve the number for sdl2-compat */ + SDL_EVENT_WINDOW_SHOWN = 0x202, /**< Window has been shown */ + SDL_EVENT_WINDOW_HIDDEN, /**< Window has been hidden */ + SDL_EVENT_WINDOW_EXPOSED, /**< Window has been exposed and should be redrawn, and can be redrawn directly from event watchers for this event. + data1 is 1 for live-resize expose events, 0 otherwise. */ + SDL_EVENT_WINDOW_MOVED, /**< Window has been moved to data1, data2 */ + SDL_EVENT_WINDOW_RESIZED, /**< Window has been resized to data1xdata2 */ + SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED,/**< The pixel size of the window has changed to data1xdata2 */ + SDL_EVENT_WINDOW_METAL_VIEW_RESIZED,/**< The pixel size of a Metal view associated with the window has changed */ + SDL_EVENT_WINDOW_MINIMIZED, /**< Window has been minimized */ + SDL_EVENT_WINDOW_MAXIMIZED, /**< Window has been maximized */ + SDL_EVENT_WINDOW_RESTORED, /**< Window has been restored to normal size and position */ + SDL_EVENT_WINDOW_MOUSE_ENTER, /**< Window has gained mouse focus */ + SDL_EVENT_WINDOW_MOUSE_LEAVE, /**< Window has lost mouse focus */ + SDL_EVENT_WINDOW_FOCUS_GAINED, /**< Window has gained keyboard focus */ + SDL_EVENT_WINDOW_FOCUS_LOST, /**< Window has lost keyboard focus */ + SDL_EVENT_WINDOW_CLOSE_REQUESTED, /**< The window manager requests that the window be closed */ + SDL_EVENT_WINDOW_HIT_TEST, /**< Window had a hit test that wasn't SDL_HITTEST_NORMAL */ + SDL_EVENT_WINDOW_ICCPROF_CHANGED, /**< The ICC profile of the window's display has changed */ + SDL_EVENT_WINDOW_DISPLAY_CHANGED, /**< Window has been moved to display data1 */ + SDL_EVENT_WINDOW_DISPLAY_SCALE_CHANGED, /**< Window display scale has been changed */ + SDL_EVENT_WINDOW_SAFE_AREA_CHANGED, /**< The window safe area has been changed */ + SDL_EVENT_WINDOW_OCCLUDED, /**< The window has been occluded */ + SDL_EVENT_WINDOW_ENTER_FULLSCREEN, /**< The window has entered fullscreen mode */ + SDL_EVENT_WINDOW_LEAVE_FULLSCREEN, /**< The window has left fullscreen mode */ + SDL_EVENT_WINDOW_DESTROYED, /**< The window with the associated ID is being or has been destroyed. If this message is being handled + in an event watcher, the window handle is still valid and can still be used to retrieve any properties + associated with the window. Otherwise, the handle has already been destroyed and all resources + associated with it are invalid */ + SDL_EVENT_WINDOW_HDR_STATE_CHANGED, /**< Window HDR properties have changed */ + SDL_EVENT_WINDOW_FIRST = SDL_EVENT_WINDOW_SHOWN, + SDL_EVENT_WINDOW_LAST = SDL_EVENT_WINDOW_HDR_STATE_CHANGED, + + /* Keyboard events */ + SDL_EVENT_KEY_DOWN = 0x300, /**< Key pressed */ + SDL_EVENT_KEY_UP, /**< Key released */ + SDL_EVENT_TEXT_EDITING, /**< Keyboard text editing (composition) */ + SDL_EVENT_TEXT_INPUT, /**< Keyboard text input */ + SDL_EVENT_KEYMAP_CHANGED, /**< Keymap changed due to a system event such as an + input language or keyboard layout change. */ + SDL_EVENT_KEYBOARD_ADDED, /**< A new keyboard has been inserted into the system */ + SDL_EVENT_KEYBOARD_REMOVED, /**< A keyboard has been removed */ + SDL_EVENT_TEXT_EDITING_CANDIDATES, /**< Keyboard text editing candidates */ + SDL_EVENT_SCREEN_KEYBOARD_SHOWN, /**< The on-screen keyboard has been shown */ + SDL_EVENT_SCREEN_KEYBOARD_HIDDEN, /**< The on-screen keyboard has been hidden */ + + /* Mouse events */ + SDL_EVENT_MOUSE_MOTION = 0x400, /**< Mouse moved */ + SDL_EVENT_MOUSE_BUTTON_DOWN, /**< Mouse button pressed */ + SDL_EVENT_MOUSE_BUTTON_UP, /**< Mouse button released */ + SDL_EVENT_MOUSE_WHEEL, /**< Mouse wheel motion */ + SDL_EVENT_MOUSE_ADDED, /**< A new mouse has been inserted into the system */ + SDL_EVENT_MOUSE_REMOVED, /**< A mouse has been removed */ + + /* Joystick events */ + SDL_EVENT_JOYSTICK_AXIS_MOTION = 0x600, /**< Joystick axis motion */ + SDL_EVENT_JOYSTICK_BALL_MOTION, /**< Joystick trackball motion */ + SDL_EVENT_JOYSTICK_HAT_MOTION, /**< Joystick hat position change */ + SDL_EVENT_JOYSTICK_BUTTON_DOWN, /**< Joystick button pressed */ + SDL_EVENT_JOYSTICK_BUTTON_UP, /**< Joystick button released */ + SDL_EVENT_JOYSTICK_ADDED, /**< A new joystick has been inserted into the system */ + SDL_EVENT_JOYSTICK_REMOVED, /**< An opened joystick has been removed */ + SDL_EVENT_JOYSTICK_BATTERY_UPDATED, /**< Joystick battery level change */ + SDL_EVENT_JOYSTICK_UPDATE_COMPLETE, /**< Joystick update is complete */ + + /* Gamepad events */ + SDL_EVENT_GAMEPAD_AXIS_MOTION = 0x650, /**< Gamepad axis motion */ + SDL_EVENT_GAMEPAD_BUTTON_DOWN, /**< Gamepad button pressed */ + SDL_EVENT_GAMEPAD_BUTTON_UP, /**< Gamepad button released */ + SDL_EVENT_GAMEPAD_ADDED, /**< A new gamepad has been inserted into the system */ + SDL_EVENT_GAMEPAD_REMOVED, /**< A gamepad has been removed */ + SDL_EVENT_GAMEPAD_REMAPPED, /**< The gamepad mapping was updated */ + SDL_EVENT_GAMEPAD_TOUCHPAD_DOWN, /**< Gamepad touchpad was touched */ + SDL_EVENT_GAMEPAD_TOUCHPAD_MOTION, /**< Gamepad touchpad finger was moved */ + SDL_EVENT_GAMEPAD_TOUCHPAD_UP, /**< Gamepad touchpad finger was lifted */ + SDL_EVENT_GAMEPAD_SENSOR_UPDATE, /**< Gamepad sensor was updated */ + SDL_EVENT_GAMEPAD_UPDATE_COMPLETE, /**< Gamepad update is complete */ + SDL_EVENT_GAMEPAD_STEAM_HANDLE_UPDATED, /**< Gamepad Steam handle has changed */ + + /* Touch events */ + SDL_EVENT_FINGER_DOWN = 0x700, + SDL_EVENT_FINGER_UP, + SDL_EVENT_FINGER_MOTION, + SDL_EVENT_FINGER_CANCELED, + + /* Pinch events */ + SDL_EVENT_PINCH_BEGIN = 0x710, /**< Pinch gesture started */ + SDL_EVENT_PINCH_UPDATE, /**< Pinch gesture updated */ + SDL_EVENT_PINCH_END, /**< Pinch gesture ended */ + + /* 0x800, 0x801, and 0x802 were the Gesture events from SDL2. Do not reuse these values! sdl2-compat needs them! */ + + /* Clipboard events */ + SDL_EVENT_CLIPBOARD_UPDATE = 0x900, /**< The clipboard changed */ + + /* Drag and drop events */ + SDL_EVENT_DROP_FILE = 0x1000, /**< The system requests a file open */ + SDL_EVENT_DROP_TEXT, /**< text/plain drag-and-drop event */ + SDL_EVENT_DROP_BEGIN, /**< A new set of drops is beginning (NULL filename) */ + SDL_EVENT_DROP_COMPLETE, /**< Current set of drops is now complete (NULL filename) */ + SDL_EVENT_DROP_POSITION, /**< Position while moving over the window */ + + /* Audio hotplug events */ + SDL_EVENT_AUDIO_DEVICE_ADDED = 0x1100, /**< A new audio device is available */ + SDL_EVENT_AUDIO_DEVICE_REMOVED, /**< An audio device has been removed. */ + SDL_EVENT_AUDIO_DEVICE_FORMAT_CHANGED, /**< An audio device's format has been changed by the system. */ + + /* Sensor events */ + SDL_EVENT_SENSOR_UPDATE = 0x1200, /**< A sensor was updated */ + + /* Pressure-sensitive pen events */ + SDL_EVENT_PEN_PROXIMITY_IN = 0x1300, /**< Pressure-sensitive pen has become available */ + SDL_EVENT_PEN_PROXIMITY_OUT, /**< Pressure-sensitive pen has become unavailable */ + SDL_EVENT_PEN_DOWN, /**< Pressure-sensitive pen touched drawing surface */ + SDL_EVENT_PEN_UP, /**< Pressure-sensitive pen stopped touching drawing surface */ + SDL_EVENT_PEN_BUTTON_DOWN, /**< Pressure-sensitive pen button pressed */ + SDL_EVENT_PEN_BUTTON_UP, /**< Pressure-sensitive pen button released */ + SDL_EVENT_PEN_MOTION, /**< Pressure-sensitive pen is moving on the tablet */ + SDL_EVENT_PEN_AXIS, /**< Pressure-sensitive pen angle/pressure/etc changed */ + + /* Camera hotplug events */ + SDL_EVENT_CAMERA_DEVICE_ADDED = 0x1400, /**< A new camera device is available */ + SDL_EVENT_CAMERA_DEVICE_REMOVED, /**< A camera device has been removed. */ + SDL_EVENT_CAMERA_DEVICE_APPROVED, /**< A camera device has been approved for use by the user. */ + SDL_EVENT_CAMERA_DEVICE_DENIED, /**< A camera device has been denied for use by the user. */ + + /* Render events */ + SDL_EVENT_RENDER_TARGETS_RESET = 0x2000, /**< The render targets have been reset and their contents need to be updated */ + SDL_EVENT_RENDER_DEVICE_RESET, /**< The device has been reset and all textures need to be recreated */ + SDL_EVENT_RENDER_DEVICE_LOST, /**< The device has been lost and can't be recovered. */ + + /* Reserved events for private platforms */ + SDL_EVENT_PRIVATE0 = 0x4000, + SDL_EVENT_PRIVATE1, + SDL_EVENT_PRIVATE2, + SDL_EVENT_PRIVATE3, + + /* Internal events */ + SDL_EVENT_POLL_SENTINEL = 0x7F00, /**< Signals the end of an event poll cycle */ + + /** Events SDL_EVENT_USER through SDL_EVENT_LAST are for your use, + * and should be allocated with SDL_RegisterEvents() + */ + SDL_EVENT_USER = 0x8000, + + /** + * This last event is only for bounding internal arrays + */ + SDL_EVENT_LAST = 0xFFFF, + + /* This just makes sure the enum is the size of Uint32 */ + SDL_EVENT_ENUM_PADDING = 0x7FFFFFFF + +} SDL_EventType; + +/** + * Fields shared by every event + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_CommonEvent +{ + Uint32 type; /**< Event type, shared with all events, Uint32 to cover user events which are not in the SDL_EventType enumeration */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ +} SDL_CommonEvent; + +/** + * Display state change event data (event.display.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_DisplayEvent +{ + SDL_EventType type; /**< SDL_EVENT_DISPLAY_* */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_DisplayID displayID;/**< The associated display */ + Sint32 data1; /**< event dependent data */ + Sint32 data2; /**< event dependent data */ +} SDL_DisplayEvent; + +/** + * Window state change event data (event.window.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_WindowEvent +{ + SDL_EventType type; /**< SDL_EVENT_WINDOW_* */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The associated window */ + Sint32 data1; /**< event dependent data */ + Sint32 data2; /**< event dependent data */ +} SDL_WindowEvent; + +/** + * Keyboard device event structure (event.kdevice.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_KeyboardDeviceEvent +{ + SDL_EventType type; /**< SDL_EVENT_KEYBOARD_ADDED or SDL_EVENT_KEYBOARD_REMOVED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_KeyboardID which; /**< The keyboard instance id */ +} SDL_KeyboardDeviceEvent; + +/** + * Keyboard button event structure (event.key.*) + * + * The `key` is the base SDL_Keycode generated by pressing the `scancode` + * using the current keyboard layout, applying any options specified in + * SDL_HINT_KEYCODE_OPTIONS. You can get the SDL_Keycode corresponding to the + * event scancode and modifiers directly from the keyboard layout, bypassing + * SDL_HINT_KEYCODE_OPTIONS, by calling SDL_GetKeyFromScancode(). + * + * \since This struct is available since SDL 3.2.0. + * + * \sa SDL_GetKeyFromScancode + * \sa SDL_HINT_KEYCODE_OPTIONS + */ +typedef struct SDL_KeyboardEvent +{ + SDL_EventType type; /**< SDL_EVENT_KEY_DOWN or SDL_EVENT_KEY_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with keyboard focus, if any */ + SDL_KeyboardID which; /**< The keyboard instance id, or 0 if unknown or virtual */ + SDL_Scancode scancode; /**< SDL physical key code */ + SDL_Keycode key; /**< SDL virtual key code */ + SDL_Keymod mod; /**< current key modifiers */ + Uint16 raw; /**< The platform dependent scancode for this event */ + bool down; /**< true if the key is pressed */ + bool repeat; /**< true if this is a key repeat */ +} SDL_KeyboardEvent; + +/** + * Keyboard text editing event structure (event.edit.*) + * + * The start cursor is the position, in UTF-8 characters, where new typing + * will be inserted into the editing text. The length is the number of UTF-8 + * characters that will be replaced by new typing. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_TextEditingEvent +{ + SDL_EventType type; /**< SDL_EVENT_TEXT_EDITING */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with keyboard focus, if any */ + const char *text; /**< The editing text */ + Sint32 start; /**< The start cursor of selected editing text, or -1 if not set */ + Sint32 length; /**< The length of selected editing text, or -1 if not set */ +} SDL_TextEditingEvent; + +/** + * Keyboard IME candidates event structure (event.edit_candidates.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_TextEditingCandidatesEvent +{ + SDL_EventType type; /**< SDL_EVENT_TEXT_EDITING_CANDIDATES */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with keyboard focus, if any */ + const char * const *candidates; /**< The list of candidates, or NULL if there are no candidates available */ + Sint32 num_candidates; /**< The number of strings in `candidates` */ + Sint32 selected_candidate; /**< The index of the selected candidate, or -1 if no candidate is selected */ + bool horizontal; /**< true if the list is horizontal, false if it's vertical */ + Uint8 padding1; + Uint8 padding2; + Uint8 padding3; +} SDL_TextEditingCandidatesEvent; + +/** + * Keyboard text input event structure (event.text.*) + * + * This event will never be delivered unless text input is enabled by calling + * SDL_StartTextInput(). Text input is disabled by default! + * + * \since This struct is available since SDL 3.2.0. + * + * \sa SDL_StartTextInput + * \sa SDL_StopTextInput + */ +typedef struct SDL_TextInputEvent +{ + SDL_EventType type; /**< SDL_EVENT_TEXT_INPUT */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with keyboard focus, if any */ + const char *text; /**< The input text, UTF-8 encoded */ +} SDL_TextInputEvent; + +/** + * Mouse device event structure (event.mdevice.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_MouseDeviceEvent +{ + SDL_EventType type; /**< SDL_EVENT_MOUSE_ADDED or SDL_EVENT_MOUSE_REMOVED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_MouseID which; /**< The mouse instance id */ +} SDL_MouseDeviceEvent; + +/** + * Mouse motion event structure (event.motion.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_MouseMotionEvent +{ + SDL_EventType type; /**< SDL_EVENT_MOUSE_MOTION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with mouse focus, if any */ + SDL_MouseID which; /**< The mouse instance id in relative mode, SDL_TOUCH_MOUSEID for touch events, or 0 */ + SDL_MouseButtonFlags state; /**< The current button state */ + float x; /**< X coordinate, relative to window */ + float y; /**< Y coordinate, relative to window */ + float xrel; /**< The relative motion in the X direction */ + float yrel; /**< The relative motion in the Y direction */ +} SDL_MouseMotionEvent; + +/** + * Mouse button event structure (event.button.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_MouseButtonEvent +{ + SDL_EventType type; /**< SDL_EVENT_MOUSE_BUTTON_DOWN or SDL_EVENT_MOUSE_BUTTON_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with mouse focus, if any */ + SDL_MouseID which; /**< The mouse instance id in relative mode, SDL_TOUCH_MOUSEID for touch events, or 0 */ + Uint8 button; /**< The mouse button index */ + bool down; /**< true if the button is pressed */ + Uint8 clicks; /**< 1 for single-click, 2 for double-click, etc. */ + Uint8 padding; + float x; /**< X coordinate, relative to window */ + float y; /**< Y coordinate, relative to window */ +} SDL_MouseButtonEvent; + +/** + * Mouse wheel event structure (event.wheel.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_MouseWheelEvent +{ + SDL_EventType type; /**< SDL_EVENT_MOUSE_WHEEL */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with mouse focus, if any */ + SDL_MouseID which; /**< The mouse instance id in relative mode or 0 */ + float x; /**< The amount scrolled horizontally, positive to the right and negative to the left */ + float y; /**< The amount scrolled vertically, positive away from the user and negative toward the user */ + SDL_MouseWheelDirection 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 */ + float mouse_x; /**< X coordinate, relative to window */ + float mouse_y; /**< Y coordinate, relative to window */ + Sint32 integer_x; /**< The amount scrolled horizontally, accumulated to whole scroll "ticks" (added in 3.2.12) */ + Sint32 integer_y; /**< The amount scrolled vertically, accumulated to whole scroll "ticks" (added in 3.2.12) */ +} SDL_MouseWheelEvent; + +/** + * Joystick axis motion event structure (event.jaxis.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_JoyAxisEvent +{ + SDL_EventType type; /**< SDL_EVENT_JOYSTICK_AXIS_MOTION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Uint8 axis; /**< The joystick axis index */ + Uint8 padding1; + Uint8 padding2; + Uint8 padding3; + Sint16 value; /**< The axis value (range: -32768 to 32767) */ + Uint16 padding4; +} SDL_JoyAxisEvent; + +/** + * Joystick trackball motion event structure (event.jball.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_JoyBallEvent +{ + SDL_EventType type; /**< SDL_EVENT_JOYSTICK_BALL_MOTION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Uint8 ball; /**< The joystick trackball index */ + Uint8 padding1; + Uint8 padding2; + Uint8 padding3; + 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 (event.jhat.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_JoyHatEvent +{ + SDL_EventType type; /**< SDL_EVENT_JOYSTICK_HAT_MOTION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Uint8 hat; /**< The joystick hat index */ + Uint8 value; /**< The hat position value. + * \sa SDL_HAT_LEFTUP SDL_HAT_UP SDL_HAT_RIGHTUP + * \sa SDL_HAT_LEFT SDL_HAT_CENTERED SDL_HAT_RIGHT + * \sa SDL_HAT_LEFTDOWN SDL_HAT_DOWN SDL_HAT_RIGHTDOWN + * + * Note that zero means the POV is centered. + */ + Uint8 padding1; + Uint8 padding2; +} SDL_JoyHatEvent; + +/** + * Joystick button event structure (event.jbutton.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_JoyButtonEvent +{ + SDL_EventType type; /**< SDL_EVENT_JOYSTICK_BUTTON_DOWN or SDL_EVENT_JOYSTICK_BUTTON_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Uint8 button; /**< The joystick button index */ + bool down; /**< true if the button is pressed */ + Uint8 padding1; + Uint8 padding2; +} SDL_JoyButtonEvent; + +/** + * Joystick device event structure (event.jdevice.*) + * + * SDL will send JOYSTICK_ADDED events for devices that are already plugged in + * during SDL_Init. + * + * \since This struct is available since SDL 3.2.0. + * + * \sa SDL_GamepadDeviceEvent + */ +typedef struct SDL_JoyDeviceEvent +{ + SDL_EventType type; /**< SDL_EVENT_JOYSTICK_ADDED or SDL_EVENT_JOYSTICK_REMOVED or SDL_EVENT_JOYSTICK_UPDATE_COMPLETE */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ +} SDL_JoyDeviceEvent; + +/** + * Joystick battery level change event structure (event.jbattery.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_JoyBatteryEvent +{ + SDL_EventType type; /**< SDL_EVENT_JOYSTICK_BATTERY_UPDATED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + SDL_PowerState state; /**< The joystick battery state */ + int percent; /**< The joystick battery percent charge remaining */ +} SDL_JoyBatteryEvent; + +/** + * Gamepad axis motion event structure (event.gaxis.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_GamepadAxisEvent +{ + SDL_EventType type; /**< SDL_EVENT_GAMEPAD_AXIS_MOTION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Uint8 axis; /**< The gamepad axis (SDL_GamepadAxis) */ + Uint8 padding1; + Uint8 padding2; + Uint8 padding3; + Sint16 value; /**< The axis value (range: -32768 to 32767) */ + Uint16 padding4; +} SDL_GamepadAxisEvent; + + +/** + * Gamepad button event structure (event.gbutton.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_GamepadButtonEvent +{ + SDL_EventType type; /**< SDL_EVENT_GAMEPAD_BUTTON_DOWN or SDL_EVENT_GAMEPAD_BUTTON_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Uint8 button; /**< The gamepad button (SDL_GamepadButton) */ + bool down; /**< true if the button is pressed */ + Uint8 padding1; + Uint8 padding2; +} SDL_GamepadButtonEvent; + + +/** + * Gamepad device event structure (event.gdevice.*) + * + * Joysticks that are supported gamepads receive both an SDL_JoyDeviceEvent + * and an SDL_GamepadDeviceEvent. + * + * SDL will send GAMEPAD_ADDED events for joysticks that are already plugged + * in during SDL_Init() and are recognized as gamepads. It will also send + * events for joysticks that get gamepad mappings at runtime. + * + * \since This struct is available since SDL 3.2.0. + * + * \sa SDL_JoyDeviceEvent + */ +typedef struct SDL_GamepadDeviceEvent +{ + SDL_EventType type; /**< SDL_EVENT_GAMEPAD_ADDED, SDL_EVENT_GAMEPAD_REMOVED, or SDL_EVENT_GAMEPAD_REMAPPED, SDL_EVENT_GAMEPAD_UPDATE_COMPLETE or SDL_EVENT_GAMEPAD_STEAM_HANDLE_UPDATED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ +} SDL_GamepadDeviceEvent; + +/** + * Gamepad touchpad event structure (event.gtouchpad.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_GamepadTouchpadEvent +{ + SDL_EventType type; /**< SDL_EVENT_GAMEPAD_TOUCHPAD_DOWN or SDL_EVENT_GAMEPAD_TOUCHPAD_MOTION or SDL_EVENT_GAMEPAD_TOUCHPAD_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Sint32 touchpad; /**< The index of the touchpad */ + Sint32 finger; /**< The index of the finger on the touchpad */ + float x; /**< Normalized in the range 0...1 with 0 being on the left */ + float y; /**< Normalized in the range 0...1 with 0 being at the top */ + float pressure; /**< Normalized in the range 0...1 */ +} SDL_GamepadTouchpadEvent; + +/** + * Gamepad sensor event structure (event.gsensor.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_GamepadSensorEvent +{ + SDL_EventType type; /**< SDL_EVENT_GAMEPAD_SENSOR_UPDATE */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_JoystickID which; /**< The joystick instance id */ + Sint32 sensor; /**< The type of the sensor, one of the values of SDL_SensorType */ + float data[3]; /**< Up to 3 values from the sensor, as defined in SDL_sensor.h */ + Uint64 sensor_timestamp; /**< The timestamp of the sensor reading in nanoseconds, not necessarily synchronized with the system clock */ +} SDL_GamepadSensorEvent; + +/** + * Audio device event structure (event.adevice.*) + * + * Note that SDL will send a SDL_EVENT_AUDIO_DEVICE_ADDED event for every + * device it discovers during initialization. After that, this event will only + * arrive when a device is hotplugged during the program's run. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_AudioDeviceEvent +{ + SDL_EventType type; /**< SDL_EVENT_AUDIO_DEVICE_ADDED, or SDL_EVENT_AUDIO_DEVICE_REMOVED, or SDL_EVENT_AUDIO_DEVICE_FORMAT_CHANGED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_AudioDeviceID which; /**< SDL_AudioDeviceID for the device being added or removed or changing */ + bool recording; /**< false if a playback device, true if a recording device. */ + Uint8 padding1; + Uint8 padding2; + Uint8 padding3; +} SDL_AudioDeviceEvent; + +/** + * Camera device event structure (event.cdevice.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_CameraDeviceEvent +{ + SDL_EventType type; /**< SDL_EVENT_CAMERA_DEVICE_ADDED, SDL_EVENT_CAMERA_DEVICE_REMOVED, SDL_EVENT_CAMERA_DEVICE_APPROVED, SDL_EVENT_CAMERA_DEVICE_DENIED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_CameraID which; /**< SDL_CameraID for the device being added or removed or changing */ +} SDL_CameraDeviceEvent; + + +/** + * Renderer event structure (event.render.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_RenderEvent +{ + SDL_EventType type; /**< SDL_EVENT_RENDER_TARGETS_RESET, SDL_EVENT_RENDER_DEVICE_RESET, SDL_EVENT_RENDER_DEVICE_LOST */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window containing the renderer in question. */ +} SDL_RenderEvent; + + +/** + * Touch finger event structure (event.tfinger.*) + * + * Coordinates in this event are normalized. `x` and `y` are normalized to a + * range between 0.0f and 1.0f, relative to the window, so (0,0) is the top + * left and (1,1) is the bottom right. Delta coordinates `dx` and `dy` are + * normalized in the ranges of -1.0f (traversed all the way from the bottom or + * right to all the way up or left) to 1.0f (traversed all the way from the + * top or left to all the way down or right). + * + * Note that while the coordinates are _normalized_, they are not _clamped_, + * which means in some circumstances you can get a value outside of this + * range. For example, a renderer using logical presentation might give a + * negative value when the touch is in the letterboxing. Some platforms might + * report a touch outside of the window, which will also be outside of the + * range. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_TouchFingerEvent +{ + SDL_EventType type; /**< SDL_EVENT_FINGER_DOWN, SDL_EVENT_FINGER_UP, SDL_EVENT_FINGER_MOTION, or SDL_EVENT_FINGER_CANCELED */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_TouchID touchID; /**< The touch device id */ + SDL_FingerID fingerID; + float x; /**< Normalized in the range 0...1 */ + float y; /**< Normalized in the range 0...1 */ + float dx; /**< Normalized in the range -1...1 */ + float dy; /**< Normalized in the range -1...1 */ + float pressure; /**< Normalized in the range 0...1 */ + SDL_WindowID windowID; /**< The window underneath the finger, if any */ +} SDL_TouchFingerEvent; + +/** + * Pinch event structure (event.pinch.*) + */ +typedef struct SDL_PinchFingerEvent +{ + SDL_EventType type; /**< ::SDL_EVENT_PINCH_BEGIN or ::SDL_EVENT_PINCH_UPDATE or ::SDL_EVENT_PINCH_END */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + float scale; /**< The scale change since the last SDL_EVENT_PINCH_UPDATE. Scale < 1 is "zoom out". Scale > 1 is "zoom in". */ + SDL_WindowID windowID; /**< The window underneath the finger, if any */ +} SDL_PinchFingerEvent; + +/** + * Pressure-sensitive pen proximity event structure (event.pproximity.*) + * + * When a pen becomes visible to the system (it is close enough to a tablet, + * etc), SDL will send an SDL_EVENT_PEN_PROXIMITY_IN event with the new pen's + * ID. This ID is valid until the pen leaves proximity again (has been removed + * from the tablet's area, the tablet has been unplugged, etc). If the same + * pen reenters proximity again, it will be given a new ID. + * + * Note that "proximity" means "close enough for the tablet to know the tool + * is there." The pen touching and lifting off from the tablet while not + * leaving the area are handled by SDL_EVENT_PEN_DOWN and SDL_EVENT_PEN_UP. + * + * Not all platforms have a window associated with the pen during proximity + * events. Some wait until motion/button/etc events to offer this info. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_PenProximityEvent +{ + SDL_EventType type; /**< SDL_EVENT_PEN_PROXIMITY_IN or SDL_EVENT_PEN_PROXIMITY_OUT */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with pen focus, if any */ + SDL_PenID which; /**< The pen instance id */ +} SDL_PenProximityEvent; + +/** + * Pressure-sensitive pen motion event structure (event.pmotion.*) + * + * Depending on the hardware, you may get motion events when the pen is not + * touching a tablet, for tracking a pen even when it isn't drawing. You + * should listen for SDL_EVENT_PEN_DOWN and SDL_EVENT_PEN_UP events, or check + * `pen_state & SDL_PEN_INPUT_DOWN` to decide if a pen is "drawing" when + * dealing with pen motion. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_PenMotionEvent +{ + SDL_EventType type; /**< SDL_EVENT_PEN_MOTION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with pen focus, if any */ + SDL_PenID which; /**< The pen instance id */ + SDL_PenInputFlags pen_state; /**< Complete pen input state at time of event */ + float x; /**< X coordinate, relative to window */ + float y; /**< Y coordinate, relative to window */ +} SDL_PenMotionEvent; + +/** + * Pressure-sensitive pen touched event structure (event.ptouch.*) + * + * These events come when a pen touches a surface (a tablet, etc), or lifts + * off from one. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_PenTouchEvent +{ + SDL_EventType type; /**< SDL_EVENT_PEN_DOWN or SDL_EVENT_PEN_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with pen focus, if any */ + SDL_PenID which; /**< The pen instance id */ + SDL_PenInputFlags pen_state; /**< Complete pen input state at time of event */ + float x; /**< X coordinate, relative to window */ + float y; /**< Y coordinate, relative to window */ + bool eraser; /**< true if eraser end is used (not all pens support this). */ + bool down; /**< true if the pen is touching or false if the pen is lifted off */ +} SDL_PenTouchEvent; + +/** + * Pressure-sensitive pen button event structure (event.pbutton.*) + * + * This is for buttons on the pen itself that the user might click. The pen + * itself pressing down to draw triggers a SDL_EVENT_PEN_DOWN event instead. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_PenButtonEvent +{ + SDL_EventType type; /**< SDL_EVENT_PEN_BUTTON_DOWN or SDL_EVENT_PEN_BUTTON_UP */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with mouse focus, if any */ + SDL_PenID which; /**< The pen instance id */ + SDL_PenInputFlags pen_state; /**< Complete pen input state at time of event */ + float x; /**< X coordinate, relative to window */ + float y; /**< Y coordinate, relative to window */ + Uint8 button; /**< The pen button index (first button is 1). */ + bool down; /**< true if the button is pressed */ +} SDL_PenButtonEvent; + +/** + * Pressure-sensitive pen pressure / angle event structure (event.paxis.*) + * + * You might get some of these events even if the pen isn't touching the + * tablet. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_PenAxisEvent +{ + SDL_EventType type; /**< SDL_EVENT_PEN_AXIS */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window with pen focus, if any */ + SDL_PenID which; /**< The pen instance id */ + SDL_PenInputFlags pen_state; /**< Complete pen input state at time of event */ + float x; /**< X coordinate, relative to window */ + float y; /**< Y coordinate, relative to window */ + SDL_PenAxis axis; /**< Axis that has changed */ + float value; /**< New value of axis */ +} SDL_PenAxisEvent; + +/** + * An event used to drop text or request a file open by the system + * (event.drop.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_DropEvent +{ + SDL_EventType type; /**< SDL_EVENT_DROP_BEGIN or SDL_EVENT_DROP_FILE or SDL_EVENT_DROP_TEXT or SDL_EVENT_DROP_COMPLETE or SDL_EVENT_DROP_POSITION */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The window that was dropped on, if any */ + float x; /**< X coordinate, relative to window (not on begin) */ + float y; /**< Y coordinate, relative to window (not on begin) */ + const char *source; /**< The source app that sent this drop event, or NULL if that isn't available */ + const char *data; /**< The text for SDL_EVENT_DROP_TEXT and the file name for SDL_EVENT_DROP_FILE, NULL for other events */ +} SDL_DropEvent; + +/** + * An event triggered when the clipboard contents have changed + * (event.clipboard.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_ClipboardEvent +{ + SDL_EventType type; /**< SDL_EVENT_CLIPBOARD_UPDATE */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + bool owner; /**< are we owning the clipboard (internal update) */ + Sint32 num_mime_types; /**< number of mime types */ + const char **mime_types; /**< current mime types */ +} SDL_ClipboardEvent; + +/** + * Sensor event structure (event.sensor.*) + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_SensorEvent +{ + SDL_EventType type; /**< SDL_EVENT_SENSOR_UPDATE */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_SensorID which; /**< The instance ID of the sensor */ + float data[6]; /**< Up to 6 values from the sensor - additional values can be queried using SDL_GetSensorData() */ + Uint64 sensor_timestamp; /**< The timestamp of the sensor reading in nanoseconds, not necessarily synchronized with the system clock */ +} SDL_SensorEvent; + +/** + * The "quit requested" event + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_QuitEvent +{ + SDL_EventType type; /**< SDL_EVENT_QUIT */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ +} SDL_QuitEvent; + +/** + * A user-defined event type (event.user.*) + * + * This event is unique; it is never created by SDL, but only by the + * application. The event can be pushed onto the event queue using + * SDL_PushEvent(). The contents of the structure members are completely up to + * the programmer; the only requirement is that '''type''' is a value obtained + * from SDL_RegisterEvents(). + * + * \since This struct is available since SDL 3.2.0. + */ +typedef struct SDL_UserEvent +{ + Uint32 type; /**< SDL_EVENT_USER through SDL_EVENT_LAST, Uint32 because these are not in the SDL_EventType enumeration */ + Uint32 reserved; + Uint64 timestamp; /**< In nanoseconds, populated using SDL_GetTicksNS() */ + SDL_WindowID windowID; /**< The associated window if any */ + Sint32 code; /**< User defined event code */ + void *data1; /**< User defined data pointer */ + void *data2; /**< User defined data pointer */ +} SDL_UserEvent; + + +/** + * The structure for all events in SDL. + * + * The SDL_Event structure is the core of all event handling in SDL. SDL_Event + * is a union of all event structures used in SDL. + * + * \since This struct is available since SDL 3.2.0. + */ +typedef union SDL_Event +{ + Uint32 type; /**< Event type, shared with all events, Uint32 to cover user events which are not in the SDL_EventType enumeration */ + SDL_CommonEvent common; /**< Common event data */ + SDL_DisplayEvent display; /**< Display event data */ + SDL_WindowEvent window; /**< Window event data */ + SDL_KeyboardDeviceEvent kdevice; /**< Keyboard device change event data */ + SDL_KeyboardEvent key; /**< Keyboard event data */ + SDL_TextEditingEvent edit; /**< Text editing event data */ + SDL_TextEditingCandidatesEvent edit_candidates; /**< Text editing candidates event data */ + SDL_TextInputEvent text; /**< Text input event data */ + SDL_MouseDeviceEvent mdevice; /**< Mouse device change event data */ + SDL_MouseMotionEvent motion; /**< Mouse motion event data */ + SDL_MouseButtonEvent button; /**< Mouse button event data */ + SDL_MouseWheelEvent wheel; /**< Mouse wheel event data */ + SDL_JoyDeviceEvent jdevice; /**< Joystick device change event data */ + SDL_JoyAxisEvent jaxis; /**< Joystick axis event data */ + SDL_JoyBallEvent jball; /**< Joystick ball event data */ + SDL_JoyHatEvent jhat; /**< Joystick hat event data */ + SDL_JoyButtonEvent jbutton; /**< Joystick button event data */ + SDL_JoyBatteryEvent jbattery; /**< Joystick battery event data */ + SDL_GamepadDeviceEvent gdevice; /**< Gamepad device event data */ + SDL_GamepadAxisEvent gaxis; /**< Gamepad axis event data */ + SDL_GamepadButtonEvent gbutton; /**< Gamepad button event data */ + SDL_GamepadTouchpadEvent gtouchpad; /**< Gamepad touchpad event data */ + SDL_GamepadSensorEvent gsensor; /**< Gamepad sensor event data */ + SDL_AudioDeviceEvent adevice; /**< Audio device event data */ + SDL_CameraDeviceEvent cdevice; /**< Camera device event data */ + SDL_SensorEvent sensor; /**< Sensor event data */ + SDL_QuitEvent quit; /**< Quit request event data */ + SDL_UserEvent user; /**< Custom event data */ + SDL_TouchFingerEvent tfinger; /**< Touch finger event data */ + SDL_PinchFingerEvent pinch; /**< Pinch event data */ + SDL_PenProximityEvent pproximity; /**< Pen proximity event data */ + SDL_PenTouchEvent ptouch; /**< Pen tip touching event data */ + SDL_PenMotionEvent pmotion; /**< Pen motion event data */ + SDL_PenButtonEvent pbutton; /**< Pen button event data */ + SDL_PenAxisEvent paxis; /**< Pen axis event data */ + SDL_RenderEvent render; /**< Render event data */ + SDL_DropEvent drop; /**< Drag and drop event data */ + SDL_ClipboardEvent clipboard; /**< Clipboard event data */ + + /* This is necessary for ABI compatibility between Visual C++ and GCC. + Visual C++ will respect the push pack pragma and use 52 bytes (size of + SDL_TextEditingEvent, the largest structure for 32-bit and 64-bit + architectures) for this union, and GCC will use the alignment of the + largest datatype within the union, which is 8 bytes on 64-bit + architectures. + + So... we'll add padding to force the size to be the same for both. + + On architectures where pointers are 16 bytes, this needs rounding up to + the next multiple of 16, 64, and on architectures where pointers are + even larger the size of SDL_UserEvent will dominate as being 3 pointers. + */ + Uint8 padding[128]; +} SDL_Event; + +/* Make sure we haven't broken binary compatibility */ +SDL_COMPILE_TIME_ASSERT(SDL_Event, sizeof(SDL_Event) == sizeof((SDL_static_cast(SDL_Event *, NULL))->padding)); + + +/* Function prototypes */ + +/** + * Pump the event loop, gathering events from the input devices. + * + * This function updates the event queue and internal input device state. + * + * SDL_PumpEvents() gathers all the pending input information from devices and + * places it in the event queue. Without calls to SDL_PumpEvents() no events + * would ever be placed on the queue. Often the need for calls to + * SDL_PumpEvents() is hidden from the user since SDL_PollEvent() and + * SDL_WaitEvent() implicitly call SDL_PumpEvents(). However, if you are not + * polling or waiting for events (e.g. you are filtering them), then you must + * call SDL_PumpEvents() to force an event queue update. + * + * \threadsafety This function should only be called on the main thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PollEvent + * \sa SDL_WaitEvent + */ +extern SDL_DECLSPEC void SDLCALL SDL_PumpEvents(void); + +/* @{ */ + +/** + * The type of action to request from SDL_PeepEvents(). + * + * \since This enum is available since SDL 3.2.0. + */ +typedef enum SDL_EventAction +{ + SDL_ADDEVENT, /**< Add events to the back of the queue. */ + SDL_PEEKEVENT, /**< Check but don't remove events from the queue front. */ + SDL_GETEVENT /**< Retrieve/remove events from the front of the queue. */ +} SDL_EventAction; + +/** + * Check the event queue for messages and optionally return them. + * + * `action` may be any of the following: + * + * - `SDL_ADDEVENT`: up to `numevents` events will be added to the back of the + * event queue. + * - `SDL_PEEKEVENT`: `numevents` events at the front of the event queue, + * within the specified minimum and maximum type, will be returned to the + * caller and will _not_ be removed from the queue. If you pass NULL for + * `events`, then `numevents` is ignored and the total number of matching + * events will be returned. + * - `SDL_GETEVENT`: up to `numevents` events at the front of the event queue, + * within the specified minimum and maximum type, will be returned to the + * caller and will be removed from the queue. + * + * You may have to call SDL_PumpEvents() before calling this function. + * Otherwise, the events may not be ready to be filtered when you call + * SDL_PeepEvents(). + * + * \param events destination buffer for the retrieved events, may be NULL to + * leave the events in the queue and return the number of events + * that would have been stored. + * \param numevents if action is SDL_ADDEVENT, the number of events to add + * back to the event queue; if action is SDL_PEEKEVENT or + * SDL_GETEVENT, the maximum number of events to retrieve. + * \param action action to take; see [Remarks](#remarks) for details. + * \param minType minimum value of the event type to be considered; + * SDL_EVENT_FIRST is a safe choice. + * \param maxType maximum value of the event type to be considered; + * SDL_EVENT_LAST is a safe choice. + * \returns the number of events actually stored or -1 on failure; call + * SDL_GetError() for more information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PollEvent + * \sa SDL_PumpEvents + * \sa SDL_PushEvent + */ +extern SDL_DECLSPEC int SDLCALL SDL_PeepEvents(SDL_Event *events, int numevents, SDL_EventAction action, Uint32 minType, Uint32 maxType); +/* @} */ + +/** + * Check for the existence of a certain event type in the event queue. + * + * If you need to check for a range of event types, use SDL_HasEvents() + * instead. + * + * \param type the type of event to be queried; see SDL_EventType for details. + * \returns true if events matching `type` are present, or false if events + * matching `type` are not present. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_HasEvents + */ +extern SDL_DECLSPEC bool SDLCALL SDL_HasEvent(Uint32 type); + + +/** + * Check for the existence of certain event types in the event queue. + * + * If you need to check for a single event type, use SDL_HasEvent() instead. + * + * \param minType the low end of event type to be queried, inclusive; see + * SDL_EventType for details. + * \param maxType the high end of event type to be queried, inclusive; see + * SDL_EventType for details. + * \returns true if events with type >= `minType` and <= `maxType` are + * present, or false if not. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_HasEvents + */ +extern SDL_DECLSPEC bool SDLCALL SDL_HasEvents(Uint32 minType, Uint32 maxType); + +/** + * Clear events of a specific type from the event queue. + * + * This will unconditionally remove any events from the queue that match + * `type`. If you need to remove a range of event types, use SDL_FlushEvents() + * instead. + * + * It's also normal to just ignore events you don't care about in your event + * loop without calling this function. + * + * This function only affects currently queued events. If you want to make + * sure that all pending OS events are flushed, you can call SDL_PumpEvents() + * on the main thread immediately before the flush call. + * + * If you have user events with custom data that needs to be freed, you should + * use SDL_PeepEvents() to remove and clean up those events before calling + * this function. + * + * \param type the type of event to be cleared; see SDL_EventType for details. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_FlushEvents + */ +extern SDL_DECLSPEC void SDLCALL SDL_FlushEvent(Uint32 type); + +/** + * Clear events of a range of types from the event queue. + * + * This will unconditionally remove any events from the queue that are in the + * range of `minType` to `maxType`, inclusive. If you need to remove a single + * event type, use SDL_FlushEvent() instead. + * + * It's also normal to just ignore events you don't care about in your event + * loop without calling this function. + * + * This function only affects currently queued events. If you want to make + * sure that all pending OS events are flushed, you can call SDL_PumpEvents() + * on the main thread immediately before the flush call. + * + * \param minType the low end of event type to be cleared, inclusive; see + * SDL_EventType for details. + * \param maxType the high end of event type to be cleared, inclusive; see + * SDL_EventType for details. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_FlushEvent + */ +extern SDL_DECLSPEC void SDLCALL SDL_FlushEvents(Uint32 minType, Uint32 maxType); + +/** + * Poll for currently pending events. + * + * If `event` is not NULL, the next event is removed from the queue and stored + * in the SDL_Event structure pointed to by `event`. The 1 returned refers to + * this event, immediately stored in the SDL Event structure -- not an event + * to follow. + * + * If `event` is NULL, it simply returns 1 if there is an event in the queue, + * but will not remove it from the queue. + * + * As this function may implicitly call SDL_PumpEvents(), you can only call + * this function in the thread that set the video mode. + * + * SDL_PollEvent() is the favored way of receiving system events since it can + * be done from the main loop and does not suspend the main loop while waiting + * on an event to be posted. + * + * The common practice is to fully process the event queue once every frame, + * usually as a first step before updating the game's state: + * + * ```c + * while (game_is_still_running) { + * SDL_Event event; + * while (SDL_PollEvent(&event)) { // poll until all events are handled! + * // decide what to do with this event. + * } + * + * // update game state, draw the current frame + * } + * ``` + * + * Note that Windows (and possibly other platforms) has a quirk about how it + * handles events while dragging/resizing a window, which can cause this + * function to block for significant amounts of time. Technical explanations + * and solutions are discussed on the wiki: + * + * https://wiki.libsdl.org/SDL3/AppFreezeDuringDrag + * + * \param event the SDL_Event structure to be filled with the next event from + * the queue, or NULL. + * \returns true if this got an event or false if there are none available. + * + * \threadsafety This function should only be called on the main thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PushEvent + * \sa SDL_WaitEvent + * \sa SDL_WaitEventTimeout + */ +extern SDL_DECLSPEC bool SDLCALL SDL_PollEvent(SDL_Event *event); + +/** + * Wait indefinitely for the next available event. + * + * If `event` is not NULL, the next event is removed from the queue and stored + * in the SDL_Event structure pointed to by `event`. + * + * As this function may implicitly call SDL_PumpEvents(), you can only call + * this function in the thread that initialized the video subsystem. + * + * \param event the SDL_Event structure to be filled in with the next event + * from the queue, or NULL. + * \returns true on success or false if there was an error while waiting for + * events; call SDL_GetError() for more information. + * + * \threadsafety This function should only be called on the main thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PollEvent + * \sa SDL_PushEvent + * \sa SDL_WaitEventTimeout + */ +extern SDL_DECLSPEC bool SDLCALL SDL_WaitEvent(SDL_Event *event); + +/** + * Wait until the specified timeout (in milliseconds) for the next available + * event. + * + * If `event` is not NULL, the next event is removed from the queue and stored + * in the SDL_Event structure pointed to by `event`. + * + * As this function may implicitly call SDL_PumpEvents(), you can only call + * this function in the thread that initialized the video subsystem. + * + * The timeout is not guaranteed, the actual wait time could be longer due to + * system scheduling. + * + * \param event the SDL_Event structure to be filled in with the next event + * from the queue, or NULL. + * \param timeoutMS the maximum number of milliseconds to wait for the next + * available event. + * \returns true if this got an event or false if the timeout elapsed without + * any events available. + * + * \threadsafety This function should only be called on the main thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PollEvent + * \sa SDL_PushEvent + * \sa SDL_WaitEvent + */ +extern SDL_DECLSPEC bool SDLCALL SDL_WaitEventTimeout(SDL_Event *event, Sint32 timeoutMS); + +/** + * Add an event to the event queue. + * + * The event queue can actually be used as a two way communication channel. + * Not only can events be read from the queue, but the user can also push + * their own events onto it. `event` is a pointer to the event structure you + * wish to push onto the queue. The event is copied into the queue, and the + * caller may dispose of the memory pointed to after SDL_PushEvent() returns. + * + * Note: Pushing device input events onto the queue doesn't modify the state + * of the device within SDL. + * + * Note: Events pushed onto the queue with SDL_PushEvent() get passed through + * the event filter but events added with SDL_PeepEvents() do not. + * + * For pushing application-specific events, please use SDL_RegisterEvents() to + * get an event type that does not conflict with other code that also wants + * its own custom event types. + * + * \param event the SDL_Event to be added to the queue. + * \returns true on success, false if the event was filtered or on failure; + * call SDL_GetError() for more information. A common reason for + * error is the event queue being full. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PeepEvents + * \sa SDL_PollEvent + * \sa SDL_RegisterEvents + */ +extern SDL_DECLSPEC bool SDLCALL SDL_PushEvent(SDL_Event *event); + +/** + * A function pointer used for callbacks that watch the event queue. + * + * \param userdata what was passed as `userdata` to SDL_SetEventFilter() or + * SDL_AddEventWatch, etc. + * \param event the event that triggered the callback. + * \returns true to permit event to be added to the queue, and false to + * disallow it. When used with SDL_AddEventWatch, the return value is + * ignored. + * + * \threadsafety SDL may call this callback at any time from any thread; the + * application is responsible for locking resources the callback + * touches that need to be protected. + * + * \since This datatype is available since SDL 3.2.0. + * + * \sa SDL_SetEventFilter + * \sa SDL_AddEventWatch + */ +typedef bool (SDLCALL *SDL_EventFilter)(void *userdata, SDL_Event *event); + +/** + * Set up a filter to process all events before they are added to the internal + * event queue. + * + * If you just want to see events without modifying them or preventing them + * from being queued, you should use SDL_AddEventWatch() instead. + * + * If the filter function returns true when called, then the event will be + * added to the internal queue. If it returns false, 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! The exception is handling of + * SDL_EVENT_WINDOW_EXPOSED, which is guaranteed to be sent from the OS on the + * main thread and you are expected to redraw your window in response to this + * event. + * + * On platforms that support it, if the quit event is generated by an + * interrupt signal (e.g. pressing Ctrl-C), it will be delivered to the + * application at the next event poll. + * + * Note: Disabled events never make it to the event filter function; see + * SDL_SetEventEnabled(). + * + * Note: Events pushed onto the queue with SDL_PushEvent() get passed through + * the event filter, but events pushed onto the queue with SDL_PeepEvents() do + * not. + * + * \param filter a function to call when an event happens. + * \param userdata a pointer that is passed to `filter`. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_AddEventWatch + * \sa SDL_SetEventEnabled + * \sa SDL_GetEventFilter + * \sa SDL_PeepEvents + * \sa SDL_PushEvent + */ +extern SDL_DECLSPEC void SDLCALL SDL_SetEventFilter(SDL_EventFilter filter, void *userdata); + +/** + * Query the current event filter. + * + * This function can be used to "chain" filters, by saving the existing filter + * before replacing it with a function that will call that saved filter. + * + * \param filter the current callback function will be stored here. + * \param userdata the pointer that is passed to the current event filter will + * be stored here. + * \returns true on success or false if there is no event filter set. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_SetEventFilter + */ +extern SDL_DECLSPEC bool SDLCALL SDL_GetEventFilter(SDL_EventFilter *filter, void **userdata); + +/** + * Add a callback to be triggered when an event is added to the event queue. + * + * `filter` will be called when an event happens, and its return value is + * ignored. + * + * **WARNING**: Be very careful of what you do in the event filter function, + * as it may run in a different thread! + * + * If the quit event is generated by a signal (e.g. SIGINT), it will bypass + * the internal queue and be delivered to the watch callback immediately, and + * arrive at the next event poll. + * + * Note: the callback is called for events posted by the user through + * SDL_PushEvent(), but not for disabled events, nor for events by a filter + * callback set with SDL_SetEventFilter(), nor for events posted by the user + * through SDL_PeepEvents(). + * + * \param filter an SDL_EventFilter function to call when an event happens. + * \param userdata a pointer that is passed to `filter`. + * \returns true on success or false on failure; call SDL_GetError() for more + * information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_RemoveEventWatch + * \sa SDL_SetEventFilter + */ +extern SDL_DECLSPEC bool SDLCALL SDL_AddEventWatch(SDL_EventFilter filter, void *userdata); + +/** + * Remove an event watch callback added with SDL_AddEventWatch(). + * + * This function takes the same input as SDL_AddEventWatch() to identify and + * delete the corresponding callback. + * + * \param filter the function originally passed to SDL_AddEventWatch(). + * \param userdata the pointer originally passed to SDL_AddEventWatch(). + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_AddEventWatch + */ +extern SDL_DECLSPEC void SDLCALL SDL_RemoveEventWatch(SDL_EventFilter filter, void *userdata); + +/** + * Run a specific filter function on the current event queue, removing any + * events for which the filter returns false. + * + * See SDL_SetEventFilter() for more information. Unlike SDL_SetEventFilter(), + * this function does not change the filter permanently, it only uses the + * supplied filter until this function returns. + * + * \param filter the SDL_EventFilter function to call when an event happens. + * \param userdata a pointer that is passed to `filter`. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_GetEventFilter + * \sa SDL_SetEventFilter + */ +extern SDL_DECLSPEC void SDLCALL SDL_FilterEvents(SDL_EventFilter filter, void *userdata); + +/** + * Set the state of processing events by type. + * + * \param type the type of event; see SDL_EventType for details. + * \param enabled whether to process the event or not. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_EventEnabled + */ +extern SDL_DECLSPEC void SDLCALL SDL_SetEventEnabled(Uint32 type, bool enabled); + +/** + * Query the state of processing events by type. + * + * \param type the type of event; see SDL_EventType for details. + * \returns true if the event is being processed, false otherwise. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_SetEventEnabled + */ +extern SDL_DECLSPEC bool SDLCALL SDL_EventEnabled(Uint32 type); + +/** + * Allocate a set of user-defined events, and return the beginning event + * number for that set of events. + * + * \param numevents the number of events to be allocated. + * \returns the beginning event number, or 0 if numevents is invalid or if + * there are not enough user-defined events left. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PushEvent + */ +extern SDL_DECLSPEC Uint32 SDLCALL SDL_RegisterEvents(int numevents); + +/** + * Get window associated with an event. + * + * \param event an event containing a `windowID`. + * \returns the associated window on success or NULL if there is none. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_PollEvent + * \sa SDL_WaitEvent + * \sa SDL_WaitEventTimeout + */ +extern SDL_DECLSPEC SDL_Window * SDLCALL SDL_GetWindowFromEvent(const SDL_Event *event); + +/** + * Generate an English description of an event. + * + * This will fill `buf` with a null-terminated string that might look + * something like this: + * + * ``` + * SDL_EVENT_MOUSE_MOTION (timestamp=1140256324 windowid=2 which=0 state=0 x=492.99 y=139.09 xrel=52 yrel=6) + * ``` + * + * The exact format of the string is not guaranteed; it is intended for + * logging purposes, to be read by a human, and not parsed by a computer. + * + * The returned value follows the same rules as SDL_snprintf(): `buf` will + * always be NULL-terminated (unless `buflen` is zero), and will be truncated + * if `buflen` is too small. The return code is the number of bytes needed for + * the complete string, not counting the NULL-terminator, whether the string + * was truncated or not. Unlike SDL_snprintf(), though, this function never + * returns -1. + * + * \param event an event to describe. May be NULL. + * \param buf the buffer to fill with the description string. May be NULL. + * \param buflen the maximum bytes that can be written to `buf`. + * \returns number of bytes needed for the full string, not counting the + * null-terminator byte. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.4.0. + */ +extern SDL_DECLSPEC int SDLCALL SDL_GetEventDescription(const SDL_Event *event, char *buf, int buflen); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include <SDL3/SDL_close_code.h> + +#endif /* SDL_events_h_ */