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for 'pinch end' events on mobile devices, send dummy value -1 for (focus|span)_(x|y)

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brentfpage
2026-06-29 11:20:10 -07:00
committed by Sam Lantinga
parent efa0e2d5ed
commit 46dcc0c554
6 changed files with 14 additions and 19 deletions
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8
include/SDL3/SDL_events.h
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@@ -854,10 +854,10 @@ typedef struct SDL_PinchFingerEvent
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 */
float span_x; /**< On mobile devices, the average X distance between each of the pointers forming the pinch in window coordinates. Otherwise, -1. */
float span_y; /**< On mobile devices, the average Y distance between each of the pointers forming the pinch in window coordinates. Otherwise, -1. */
float focus_x; /**< On mobile devices, the X coordinate of the current gesture's focal point in window coordinates. Otherwise, -1. */
float focus_y; /**< On mobile devices, the Y coordinate of the current gesture's focal point in window coordinates. Otherwise, -1. */
float span_x; /**< On mobile devices for BEGIN and UPDATE events, the average X distance between each of the pointers forming the pinch in window coordinates. Otherwise, -1. */
float span_y; /**< On mobile devices for BEGIN and UPDATE events, the average Y distance between each of the pointers forming the pinch in window coordinates. Otherwise, -1. */
float focus_x; /**< On mobile devices for BEGIN and UPDATE events, the X coordinate of the current gesture's focal point in window coordinates. Otherwise, -1. */
float focus_y; /**< On mobile devices for BEGIN and UPDATE events, the Y coordinate of the current gesture's focal point in window coordinates. Otherwise, -1. */
} SDL_PinchFingerEvent;
/**