Implement compositor support for swaylock

This makes swaylock more or less work.

3 files changed, 36 insertions, 4 deletions

diff --git a/sway/extensions.c b/sway/extensions.c
index 1ca66468..5e09bdbb 100644
--- a/sway/extensions.c
+++ b/sway/extensions.c
@@ -89,12 +89,27 @@ static void desktop_unlock(struct wl_client *client, struct wl_resource *resourc
 }
 
 static void set_lock_surface(struct wl_client *client, struct wl_resource *resource,
-                struct wl_resource *output, struct wl_resource *surface) {
-        sway_log(L_ERROR, "set_lock_surface is not currently supported");
+                struct wl_resource *_output, struct wl_resource *surface) {
+        swayc_t *output = swayc_by_handle(wlc_handle_from_wl_output_resource(_output));
+        swayc_t *view = swayc_by_handle(wlc_handle_from_wl_surface_resource(surface));
+        if (view && output) {
+                swayc_t *workspace = output->focused;
+                if (!swayc_is_child_of(view, workspace)) {
+                        move_container_to(view, workspace);
+                }
+                wlc_view_set_state(view->handle, WLC_BIT_FULLSCREEN, true);
+                workspace->fullscreen = view;
+                desktop_shell.is_locked = true;
+                set_focused_container(view);
+                arrange_windows(view, -1, -1);
+        } else {
+                sway_log(L_ERROR, "Attempted to set lock surface to non-view");
+        }
 }
 
 static void unlock(struct wl_client *client, struct wl_resource *resource) {
         sway_log(L_ERROR, "unlock is not currently supported");
+        // This isn't really necessary, we just unlock when the client exits.
 }
 
 static void set_grab_surface(struct wl_client *client, struct wl_resource *resource, struct wl_resource *surface) {
diff --git a/sway/handlers.c b/sway/handlers.c
index 136ef577..3161c677 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -331,6 +331,10 @@ static void handle_view_state_request(wlc_handle view, enum wlc_view_state_bit s
 static bool handle_key(wlc_handle view, uint32_t time, const struct wlc_modifiers *modifiers,
                 uint32_t key, enum wlc_key_state state) {
 
+        if (desktop_shell.is_locked) {
+                return EVENT_PASSTHROUGH;
+        }
+
         if (locked_view_focus && state == WLC_KEY_STATE_PRESSED) {
                 return EVENT_PASSTHROUGH;
         }
@@ -383,6 +387,10 @@ static bool handle_key(wlc_handle view, uint32_t time, const struct wlc_modifier
 }
 
 static bool handle_pointer_motion(wlc_handle handle, uint32_t time, const struct wlc_point *origin) {
+        if (desktop_shell.is_locked) {
+                return EVENT_PASSTHROUGH;
+        }
+
         struct wlc_point new_origin = *origin;
         // Switch to adjacent output if touching output edge.
         //
diff --git a/swaylock/main.c b/swaylock/main.c
index 4073da99..82b88731 100644
--- a/swaylock/main.c
+++ b/swaylock/main.c
@@ -108,7 +108,6 @@ int main(int argc, char **argv) {
                 if (!window) {
                         sway_abort("Failed to create surfaces.");
                 }
-                lock_set_lock_surface(registry->swaylock, output->output, window->surface);
                 list_add(surfaces, window);
         }
 
@@ -217,7 +216,17 @@ int main(int argc, char **argv) {
 
         cairo_surface_destroy(image);
 
-        while (wl_display_dispatch(registry->display) != -1);
+        bool locked = false;
+        while (wl_display_dispatch(registry->display) != -1) {
+                if (!locked) {
+                        for (i = 0; i < registry->outputs->length; ++i) {
+                                struct output_state *output = registry->outputs->items[i];
+                                struct window *window = surfaces->items[i];
+                                lock_set_lock_surface(registry->swaylock, output->output, window->surface);
+                        }
+                        locked = true;
+                }
+        }
 
         for (i = 0; i < surfaces->length; ++i) {
                 struct window *window = surfaces->items[i];