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Return false from SDL_SetWindowRelativeMouseMode() if relative mode isn't available

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Fixes https://github.com/libsdl-org/SDL/issues/14388
This commit is contained in:
Sam Lantinga
2025-11-03 10:42:40 -08:00
parent eedc0b19fd
commit 05887f2087
4 changed files with 22 additions and 5 deletions
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7
src/events/SDL_mouse.c
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@@ -1414,15 +1414,16 @@ bool SDL_GetRelativeMouseMode(void)
return mouse->relative_mode;
}
void SDL_UpdateRelativeMouseMode(void)
bool SDL_UpdateRelativeMouseMode(void)
{
SDL_Mouse *mouse = SDL_GetMouse();
SDL_Window *focus = SDL_GetKeyboardFocus();
bool relative_mode = (focus && (focus->flags & SDL_WINDOW_MOUSE_RELATIVE_MODE));
if (relative_mode != mouse->relative_mode) {
SDL_SetRelativeMouseMode(relative_mode);
if (relative_mode == mouse->relative_mode) {
return true;
}
return SDL_SetRelativeMouseMode(relative_mode);
}
bool SDL_UpdateMouseCapture(bool force_release)

2
src/events/SDL_mouse_c.h
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@@ -225,7 +225,7 @@ extern void SDL_PerformWarpMouseInWindow(SDL_Window *window, float x, float y, b
// Relative mouse mode
extern bool SDL_SetRelativeMouseMode(bool enabled);
extern bool SDL_GetRelativeMouseMode(void);
extern void SDL_UpdateRelativeMouseMode(void);
extern bool SDL_UpdateRelativeMouseMode(void);
extern void SDL_DisableMouseWarpEmulation(void);
// TODO RECONNECT: Set mouse state to "zero"

9
src/video/SDL_video.c
View File

@@ -4094,8 +4094,15 @@ bool SDL_SetWindowRelativeMouseMode(SDL_Window *window, bool enabled)
} else {
window->flags &= ~SDL_WINDOW_MOUSE_RELATIVE_MODE;
}
SDL_UpdateRelativeMouseMode();
if (!SDL_UpdateRelativeMouseMode()) {
if (enabled) {
window->flags &= ~SDL_WINDOW_MOUSE_RELATIVE_MODE;
} else {
window->flags |= SDL_WINDOW_MOUSE_RELATIVE_MODE;
}
return false;
}
return true;
}

9
src/video/dummy/SDL_nullvideo.c
View File

@@ -149,6 +149,13 @@ VideoBootStrap DUMMY_evdev_bootstrap = {
false
};
#else
static bool DUMMY_SetRelativeMouseMode(bool enabled)
{
return true;
}
#endif // SDL_INPUT_LINUXEV
bool DUMMY_VideoInit(SDL_VideoDevice *_this)
@@ -166,6 +173,8 @@ bool DUMMY_VideoInit(SDL_VideoDevice *_this)
#ifdef SDL_INPUT_LINUXEV
SDL_EVDEV_Init();
#else
SDL_GetMouse()->SetRelativeMouseMode = DUMMY_SetRelativeMouseMode;
#endif
// We're done!