gtk: trace input grab reason

Add a reason to grab calls and trace points,
so it is easier to debug grab related ui issues.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>

trace-events

@@ -1150,7 +1150,8 @@ ppm_save(const char *filename, void *display_surface) "%s surface=%p"
 gd_switch(const char *tab, int width, int height) "tab=%s, width=%d, height=%d"
 gd_update(const char *tab, int x, int y, int w, int h) "tab=%s, x=%d, y=%d, w=%d, h=%d"
 gd_key_event(const char *tab, int gdk_keycode, int qemu_keycode, const char *action) "tab=%s, translated GDK keycode %d to QEMU keycode %d (%s)"
-gd_grab(const char *tab, const char *device, bool on) "tab=%s, %s %d"
+gd_grab(const char *tab, const char *device, const char *reason) "tab=%s, dev=%s, reason=%s"
+gd_ungrab(const char *tab, const char *device) "tab=%s, dev=%s"
 
 # ui/vnc.c
 vnc_key_guest_leds(bool caps, bool num, bool scroll) "caps %d, num %d, scroll %d"

ui/gtk.c

@@ -165,9 +165,9 @@ struct GtkDisplayState {
     bool ignore_keys;
 };
 
-static void gd_grab_pointer(VirtualConsole *vc);
+static void gd_grab_pointer(VirtualConsole *vc, const char *reason);
 static void gd_ungrab_pointer(GtkDisplayState *s);
-static void gd_grab_keyboard(VirtualConsole *vc);
+static void gd_grab_keyboard(VirtualConsole *vc, const char *reason);
 static void gd_ungrab_keyboard(GtkDisplayState *s);
 
 /** Utility Functions **/
@@ -855,7 +855,7 @@ static gboolean gd_button_event(GtkWidget *widget, GdkEventButton *button,
             gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(s->grab_item),
                                            TRUE);
         } else {
-            gd_grab_pointer(vc);
+            gd_grab_pointer(vc, "relative-mode-click");
         }
         return TRUE;
     }
@@ -1092,7 +1092,7 @@ static gboolean gd_win_grab(void *opaque)
     if (vc->s->ptr_owner) {
         gd_ungrab_pointer(vc->s);
     } else {
-        gd_grab_pointer(vc);
+        gd_grab_pointer(vc, "user-request-detached-tab");
     }
     return TRUE;
 }
@@ -1256,7 +1256,7 @@ static void gd_grab_devices(VirtualConsole *vc, bool grab,
 }
 #endif
 
-static void gd_grab_keyboard(VirtualConsole *vc)
+static void gd_grab_keyboard(VirtualConsole *vc, const char *reason)
 {
     if (vc->s->kbd_owner) {
         if (vc->s->kbd_owner == vc) {
@@ -1277,7 +1277,7 @@ static void gd_grab_keyboard(VirtualConsole *vc)
 #endif
     vc->s->kbd_owner = vc;
     gd_update_caption(vc->s);
-    trace_gd_grab(vc->label, "kbd", true);
+    trace_gd_grab(vc->label, "kbd", reason);
 }
 
 static void gd_ungrab_keyboard(GtkDisplayState *s)
@@ -1295,10 +1295,10 @@ static void gd_ungrab_keyboard(GtkDisplayState *s)
     gdk_keyboard_ungrab(GDK_CURRENT_TIME);
 #endif
     gd_update_caption(s);
-    trace_gd_grab(vc->label, "kbd", false);
+    trace_gd_ungrab(vc->label, "kbd");
 }
 
-static void gd_grab_pointer(VirtualConsole *vc)
+static void gd_grab_pointer(VirtualConsole *vc, const char *reason)
 {
     GdkDisplay *display = gtk_widget_get_display(vc->gfx.drawing_area);
 
@@ -1337,7 +1337,7 @@ static void gd_grab_pointer(VirtualConsole *vc)
 #endif
     vc->s->ptr_owner = vc;
     gd_update_caption(vc->s);
-    trace_gd_grab(vc->label, "ptr", true);
+    trace_gd_grab(vc->label, "ptr", reason);
 }
 
 static void gd_ungrab_pointer(GtkDisplayState *s)
@@ -1363,7 +1363,7 @@ static void gd_ungrab_pointer(GtkDisplayState *s)
                              vc->s->grab_x_root, vc->s->grab_y_root);
 #endif
     gd_update_caption(s);
-    trace_gd_grab(vc->label, "ptr", false);
+    trace_gd_ungrab(vc->label, "ptr");
 }
 
 static void gd_menu_grab_input(GtkMenuItem *item, void *opaque)
@@ -1372,8 +1372,8 @@ static void gd_menu_grab_input(GtkMenuItem *item, void *opaque)
     VirtualConsole *vc = gd_vc_find_current(s);
 
     if (gd_is_grab_active(s)) {
-        gd_grab_keyboard(vc);
-        gd_grab_pointer(vc);
+        gd_grab_keyboard(vc, "user-request-main-window");
+        gd_grab_pointer(vc, "user-request-main-window");
     } else {
         gd_ungrab_keyboard(s);
         gd_ungrab_pointer(s);
@@ -1432,7 +1432,7 @@ static gboolean gd_enter_event(GtkWidget *widget, GdkEventCrossing *crossing,
     GtkDisplayState *s = vc->s;
 
     if (gd_grab_on_hover(s)) {
-        gd_grab_keyboard(vc);
+        gd_grab_keyboard(vc, "grab-on-hover");
     }
     return TRUE;
 }