sdl: Grab input on end of non-absolute mouse click

By grabbing the input already on button down, we leave the button in
that state for the host GUI. Thus it takes another click after releasing
the input again to synchronize the mouse button state.

Avoid this by grabbing on button up.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/ui/sdl.c b/ui/sdl.c
index 0d3a889741..73e58395eb 100644
--- a/ui/sdl.c
+++ b/ui/sdl.c
@@ -802,8 +802,7 @@ static void handle_mousebutton(DisplayState *ds, SDL_Event *ev)
 
     bev = &ev->button;
     if (!gui_grab && !kbd_mouse_is_absolute()) {
-        if (ev->type == SDL_MOUSEBUTTONDOWN &&
-            (bev->button == SDL_BUTTON_LEFT)) {
+        if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
             /* start grabbing all events */
             sdl_grab_start();
         }