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video: Add SDL_SetWindowMouseRect.

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This API and implementation comes from the Unreal Engine branch of SDL, which
originally called this "SDL_ConfineCursor".

Some minor cleanup and changes for consistency with the rest of SDL_video, but
there are two major changes:

1. The coordinate system has been changed so that `rect` is _window_ relative
   and not _screen_ relative, making it easier to implement without having
   global access to the display.
2. The UE version unset all rects when passing `NULL` as a parameter for
   `window`, this has been removed as it was an unused feature anyhow.

Currently this is only implemented for X, but can be supported on Wayland and
Windows at minimum too.
This commit is contained in:
Ethan Lee 2021-11-08 13:52:48 -05:00 • committed by Sam Lantinga
parent 1a98dcb6aa
commit 4b42c05ba1
23 changed files with 437 additions and 3 deletions
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1
src/dynapi/SDL_dynapi_procs.h
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@ -911,3 +911,4 @@ SDL_DYNAPI_PROC(int,SDL_hid_get_manufacturer_string,(SDL_hid_device *a, wchar_t
SDL_DYNAPI_PROC(int,SDL_hid_get_product_string,(SDL_hid_device *a, wchar_t *b, size_t c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_hid_get_serial_number_string,(SDL_hid_device *a, wchar_t *b, size_t c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_hid_get_indexed_string,(SDL_hid_device *a, int b, wchar_t *c, size_t d),(a,b,c,d),return)
SDL_DYNAPI_PROC(int,SDL_SetWindowMouseRect,(SDL_Window *a, const SDL_Rect *b),(a,b),return)