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more information for pinch gestures on mobile

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brentfpage 2026-02-22 14:37:52 -08:00
parent bbcc205de9
commit e669fd6dfd
10 changed files with 35 additions and 23 deletions
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include/SDL3/SDL_events.h
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@ -802,6 +802,10 @@ typedef struct SDL_PinchFingerEvent
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". */
float span_x; /**< The average X distance between each of the pointers forming the pinch in screen pixel coordinates. */
float span_y; /**< The average Y distance between each of the pointers forming the pinch in screen pixel coordinates. */
float focus_x; /**< The X coordinate of the current gesture's focal point in screen pixel coordinates. */
float focus_y; /**< The Y coordinate of the current gesture's focal point in screen pixel coordinates. */
SDL_WindowID windowID; /**< The window underneath the finger, if any */
} SDL_PinchFingerEvent;