sdl: Do not grab mouse on mode switch while in background

When the mouse mode changes to absolute while the SDL windows is not in
focus, refrain from grabbing the input. It would steal from some other
window.

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

1 files changed, 16 insertions, 14 deletions

diff --git a/ui/sdl.c b/ui/sdl.c
index 8cafc44..384276d 100644
--- a/ui/sdl.c
+++ b/ui/sdl.c
@@ -483,12 +483,27 @@ static void sdl_grab_end(void)
     sdl_update_caption();
 }
 
+static void absolute_mouse_grab(void)
+{
+    int mouse_x, mouse_y;
+
+    if (SDL_GetAppState() & SDL_APPINPUTFOCUS) {
+        SDL_GetMouseState(&mouse_x, &mouse_y);
+        if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
+            mouse_y > 0 && mouse_y < real_screen->h - 1) {
+            sdl_grab_start();
+        }
+    }
+}
+
 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 {
     if (kbd_mouse_is_absolute()) {
         if (!absolute_enabled) {
-            sdl_grab_start();
             absolute_enabled = 1;
+            if (is_graphic_console()) {
+                absolute_mouse_grab();
+            }
         }
     } else if (absolute_enabled) {
         if (!gui_fullscreen) {
@@ -571,19 +586,6 @@ static void toggle_full_screen(DisplayState *ds)
     vga_hw_update();
 }
 
-static void absolute_mouse_grab(void)
-{
-    int mouse_x, mouse_y;
-
-    if (SDL_GetAppState() & SDL_APPINPUTFOCUS) {
-        SDL_GetMouseState(&mouse_x, &mouse_y);
-        if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
-            mouse_y > 0 && mouse_y < real_screen->h - 1) {
-            sdl_grab_start();
-        }
-    }
-}
-
 static void handle_keydown(DisplayState *ds, SDL_Event *ev)
 {
     int mod_state;