command: mouse-pos property: add field "hover"

Add a third field: "hover", which is updated from input.c after input
keys MP_KEY_MOUSE_LEAVE and MP_KEY_MOUSE_ENTER - which are typically
sent by the VO.

It's part of mouse-pos and not a new property because it's highly tied
to mouse-pos - it makes x/y invalid while the cursor doesn't hover the
window.

Unike mouse-move, no dummy command was generated, so we add dummy
command in order for observer notification to work even while nothing
is bound.

Like mouse-pos, clients could not detect whether the mouse pointer
hovers the window because the OSC force-binds the MOUSE_LEAVE key, and
now they can using the hover field.

The lua mp.get_mouse_pos() wrapper still returns only x, y because
that's what osc.lua needs. Other clients can simply read the property.

1 files changed, 1 insertions, 1 deletions

diff --git a/input/input.h b/input/input.h
index 82e7adc503..5b5e7a99ce 100644
--- a/input/input.h
+++ b/input/input.h
@@ -99,7 +99,7 @@ void mp_input_set_mouse_pos(struct input_ctx *ictx, int x, int y);
 // Like mp_input_set_mouse_pos(), but ignore mouse disable option.
 void mp_input_set_mouse_pos_artificial(struct input_ctx *ictx, int x, int y);
 
-void mp_input_get_mouse_pos(struct input_ctx *ictx, int *x, int *y);
+void mp_input_get_mouse_pos(struct input_ctx *ictx, int *x, int *y, int *hover);
 
 // Return whether we want/accept mouse input.
 bool mp_input_mouse_enabled(struct input_ctx *ictx);