Mercurial > sdl-ios-xcode
comparison src/events/SDL_mouse.c @ 2842:97ba0be8b565
Date: Sat, 06 Dec 2008 15:27:00 +0100
From: Couriersud
Subject: SDL: Relative mouse movements
The patch below will reenable processing of relative mouse movements.
The DirectFB drivers generates those in "grabbed" mode. These ensure,
that even in fullscreen mode relative movements are reported. SDLMAME
depends on this for games with trackballs.
Looking at the code I ask myself whether relative movements should be
handled in the drivers (x11, directfb). Both x11 and directfb are able
to report relative movements. This would leave it to the driver to use
the most appropriate method for relative movements when at the border of
a fullscreen window or being "grabbed".
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 06 Dec 2008 17:50:50 +0000 |
| parents | f7872b7a8732 |
| children | 523b10db69f8 |
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| 2841:483f85e35a1a | 2842:97ba0be8b565 |
|---|---|
| 431 last_y = y; | 431 last_y = y; |
| 432 return 0; | 432 return 0; |
| 433 } | 433 } |
| 434 | 434 |
| 435 /* the relative motion is calculated regarding the system cursor last position */ | 435 /* the relative motion is calculated regarding the system cursor last position */ |
| 436 | 436 if (relative) { |
| 437 xrel = x - last_x; | 437 xrel = x; |
| 438 yrel = y - last_y; | 438 yrel = y; |
| 439 x = (last_x + x); | |
| 440 y = (last_y + y); | |
| 441 } else { | |
| 442 xrel = x - last_x; | |
| 443 yrel = y - last_y; | |
| 444 } | |
| 439 | 445 |
| 440 /* Drop events that don't change state */ | 446 /* Drop events that don't change state */ |
| 441 if (!xrel && !yrel) { | 447 if (!xrel && !yrel) { |
| 442 #if 0 | 448 #if 0 |
| 443 printf("Mouse event didn't change state - dropped!\n"); | 449 printf("Mouse event didn't change state - dropped!\n"); |