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Add SDL_GetPointDisplayIndex and SDL_GetRectDisplayIndex and re-implement SDL_GetWindowDisplayIndex in terms of SDL_GetRectDisplayIndex

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- This allows looking up the display index for an arbitrary location rather than requiring an active window to do so.

- This change also reimplements the fallback display lookup that found the display with center closest to the window's center to instead find the display rect edge
  closest to the window center (this was done in the almost identical display lookup used in SDL_windowsmodes.c, which now uses `SDL_GetPointDisplayIndex`). In
  practice this should almost never be hit as it requires the window's center to not be enclosed by any display rect.
This commit is contained in:
Sam Lantinga 2022-08-08 11:26:52 -07:00
parent 20f9a1b8a4
commit 98bac00dcc
7 changed files with 116 additions and 94 deletions
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2
src/dynapi/SDL_dynapi_procs.h
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@ -963,3 +963,5 @@ SDL_DYNAPI_PROC(int,SDL_GDKRunApp,(SDL_main_func a, void *b),(a,b),return)
SDL_DYNAPI_PROC(void,SDL_GetOriginalMemoryFunctions,(SDL_malloc_func *a, SDL_calloc_func *b, SDL_realloc_func *c, SDL_free_func *d),(a,b,c,d),)
SDL_DYNAPI_PROC(void,SDL_ResetKeyboard,(void),(),)
SDL_DYNAPI_PROC(int,SDL_GetDefaultAudioInfo,(char **a, SDL_AudioSpec *b, int c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_GetPointDisplayIndex,(const SDL_Point *a),(a),return)
SDL_DYNAPI_PROC(int,SDL_GetRectDisplayIndex,(const SDL_Rect *a),(a),return)