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input/tablet: clear focused surface on surface destroy 

Otherwise, we can end up left with a dangling pointer to a
previously-focused, now-destroyed surface.

Fixes swaywm/sway#5264.
This commit is contained in:
Tudor Brindus 2020-04-28 16:15:00 -04:00 committed by Simon Ser
parent 906c0766df
commit d698334620
2 changed files with 16 additions and 1 deletions
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types/tablet_v2/.wlr_tablet_v2_tool.c.swp Normal file
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17
types/tablet_v2/wlr_tablet_v2_tool.c
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@ -192,6 +192,7 @@ static void handle_wlr_tablet_tool_destroy(struct wl_listener *listener, void *d
wl_list_remove(&tool->link);
wl_list_remove(&tool->tool_destroy.link);
wl_list_remove(&tool->events.set_cursor.listener_list);
wl_list_remove(&tool->surface_destroy.link);
free(tool);
}
@ -226,11 +227,11 @@ struct wlr_tablet_v2_tablet_tool *wlr_tablet_tool_create(
tool->wlr_tool = wlr_tool;
wl_list_init(&tool->clients);
wl_list_init(&tool->surface_destroy.link);
tool->default_grab.tool = tool;
tool->default_grab.interface = &default_tool_grab_interface;
tool->grab = &tool->default_grab;
tool->tool_destroy.notify = handle_wlr_tablet_tool_destroy;
wl_signal_add(&wlr_tool->events.destroy, &tool->tool_destroy);
wl_list_insert(&seat->tools, &tool->link);
@ -322,6 +323,13 @@ static void queue_tool_frame(struct wlr_tablet_tool_client_v2 *tool) {
}
}
static void handle_tablet_tool_surface_destroy(struct wl_listener *listener,
void *data) {
struct wlr_tablet_v2_tablet_tool *tool =
wl_container_of(listener, tool, surface_destroy);
wlr_send_tablet_v2_tablet_tool_proximity_out(tool);
}
void wlr_send_tablet_v2_tablet_tool_proximity_in(
struct wlr_tablet_v2_tablet_tool *tool,
struct wlr_tablet_v2_tablet *tablet,
@ -366,6 +374,11 @@ void wlr_send_tablet_v2_tablet_tool_proximity_in(
return;
}
// Reinitialize the focus destroy events
wl_list_remove(&tool->surface_destroy.link);
wl_signal_add(&surface->events.destroy, &tool->surface_destroy);
tool->surface_destroy.notify = handle_tablet_tool_surface_destroy;
tool->current_client = tool_client;
uint32_t serial = wlr_seat_client_next_serial(tool_client->seat->seat_client);
@ -418,6 +431,8 @@ void wlr_send_tablet_v2_tablet_tool_proximity_out(
zwp_tablet_tool_v2_send_proximity_out(tool->current_client->resource);
send_tool_frame(tool->current_client);
wl_list_remove(&tool->surface_destroy.link);
wl_list_init(&tool->surface_destroy.link);
tool->current_client = NULL;
tool->focused_surface = NULL;
}