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desktop-shell: Don't allow multiple special surfaces

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We only want one background and/or panel per output. If another one
comes up, tell the client it's done something very bad, rather than
trying to gently negotiate our way out of the situation.

Signed-off-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Daniel Stone 2023-07-12 11:28:26 +01:00 committed by Marius Vlad
parent 22175a6a59
commit a54bc37c6c
1 changed files with 35 additions and 45 deletions
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80
desktop-shell/shell.c
View file

@ -2801,19 +2801,10 @@ configure_static_view(struct weston_view *ev, struct weston_layer *layer,
struct weston_coord_global offset_on_output)
{
struct weston_coord_global pos;
struct weston_view *v, *next;
if (!ev->output)
return;
wl_list_for_each_safe(v, next, &layer->view_list.link, layer_link.link) {
if (v->output == ev->output && v != ev) {
weston_view_unmap(v);
v->surface->committed = NULL;
weston_surface_set_label_func(v->surface, NULL);
}
}
pos = weston_coord_global_add(ev->output->pos, offset_on_output);
weston_view_set_position(ev, pos);
weston_surface_map(ev->surface);
@ -2892,35 +2883,34 @@ desktop_shell_set_background(struct wl_client *client,
if (!head)
return;
surface->output = head->output;
sh_output = find_shell_output_from_weston_output(shell, surface->output);
if (sh_output->background_surface) {
wl_resource_post_error(surface_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"output already has a background surface");
return;
}
assert(wl_list_empty(&surface->views));
view = weston_view_create(surface);
surface->committed = background_committed;
surface->committed_private = shell;
weston_surface_set_label_func(surface, background_get_label);
surface->output = head->output;
weston_view_set_output(view, surface->output);
sh_output = find_shell_output_from_weston_output(shell, surface->output);
if (sh_output->background_surface) {
/* The output already has a background, tell our helper
* there is no need for another one. */
weston_desktop_shell_send_configure(resource, 0,
surface_resource,
0, 0);
} else {
weston_desktop_shell_send_configure(resource, 0,
surface_resource,
surface->output->width,
surface->output->height);
weston_desktop_shell_send_configure(resource, 0,
surface_resource,
surface->output->width,
surface->output->height);
sh_output->background_surface = surface;
sh_output->background_surface = surface;
sh_output->background_surface_listener.notify =
handle_background_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&sh_output->background_surface_listener);
}
sh_output->background_surface_listener.notify =
handle_background_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&sh_output->background_surface_listener);
}
static int
@ -3000,33 +2990,33 @@ desktop_shell_set_panel(struct wl_client *client,
if (!head)
return;
surface->output = head->output;
sh_output = find_shell_output_from_weston_output(shell, surface->output);
if (sh_output->panel_surface) {
wl_resource_post_error(surface_resource,
WL_DISPLAY_ERROR_INVALID_OBJECT,
"output already has a panel surface");
return;
}
assert(wl_list_empty(&surface->views));
view = weston_view_create(surface);
surface->committed = panel_committed;
surface->committed_private = shell;
weston_surface_set_label_func(surface, panel_get_label);
surface->output = head->output;
weston_view_set_output(view, surface->output);
sh_output = find_shell_output_from_weston_output(shell, surface->output);
if (sh_output->panel_surface) {
/* The output already has a panel, tell our helper
* there is no need for another one. */
weston_desktop_shell_send_configure(resource, 0,
surface_resource,
0, 0);
} else {
weston_desktop_shell_send_configure(resource, 0,
surface_resource,
surface->output->width,
surface->output->height);
weston_desktop_shell_send_configure(resource, 0,
surface_resource,
surface->output->width,
surface->output->height);
sh_output->panel_surface = surface;
sh_output->panel_surface = surface;
sh_output->panel_surface_listener.notify = handle_panel_surface_destroy;
wl_signal_add(&surface->destroy_signal, &sh_output->panel_surface_listener);
}
sh_output->panel_surface_listener.notify = handle_panel_surface_destroy;
wl_signal_add(&surface->destroy_signal, &sh_output->panel_surface_listener);
}
static int