Tweak how swaylock surfaces are handled

Fixes #875

sway/extensions.c

@@ -119,27 +119,21 @@ static void set_lock_surface(struct wl_client *client, struct wl_resource *resou
 		if (!swayc_is_child_of(view, workspace)) {
 			move_container_to(view, workspace);
 		}
-		// make the view floating so it doesn't rearrange other
-		// siblings.
+		// make the view floating so it doesn't rearrange other siblings.
 		if (!view->is_floating) {
-			// Remove view from its current location
 			destroy_container(remove_child(view));
-			// and move it into workspace floating
 			add_floating(workspace, view);
 		}
 		wlc_view_set_state(view->handle, WLC_BIT_FULLSCREEN, true);
-		workspace->fullscreen = view;
-		ipc_event_window(view, "fullscreen_mode");
+		wlc_view_bring_to_front(view->handle);
+		wlc_view_focus(view->handle);
 		desktop_shell.is_locked = true;
-		// reset input state
 		input_init();
-		// set focus if the lockscreen is spawned on the currently
-		// active output
+		arrange_windows(workspace, -1, -1);
 		swayc_t *focus_output = swayc_active_output();
 		if (focus_output == output) {
 			set_focused_container(view);
 		}
-		arrange_windows(workspace, -1, -1);
 		list_add(desktop_shell.lock_surfaces, surface);
 		wl_resource_set_destructor(surface, lock_surface_destructor);
 	} else {

sway/focus.c

@@ -3,6 +3,7 @@
 #include "sway/workspace.h"
 #include "sway/layout.h"
 #include "sway/config.h"
+#include "sway/extensions.h"
 #include "sway/input_state.h"
 #include "sway/ipc-server.h"
 #include "sway/border.h"
@@ -88,7 +89,6 @@ swayc_t *get_focused_container(swayc_t *parent) {
 	if (!parent) {
 		return swayc_active_workspace();
 	}
-	// get focused container
 	while (!parent->is_focused && parent->focused) {
 		parent = parent->focused;
 	}
@@ -132,24 +132,24 @@ bool set_focused_container(swayc_t *c) {
 		p->is_focused = false;
 	}
 
-	// get new focused view and set focus to it.
 	if (!(wlc_view_get_type(p->handle) & WLC_BIT_POPUP)) {
-		// unactivate previous focus
 		if (focused->type == C_VIEW) {
 			wlc_view_set_state(focused->handle, WLC_BIT_ACTIVATED, false);
 		}
 		update_container_border(focused);
-		// activate current focus
 		if (c->type == C_VIEW) {
 			wlc_view_set_state(c->handle, WLC_BIT_ACTIVATED, true);
 		}
-		// set focus
-		wlc_view_focus(c->handle);
+		if (!desktop_shell.is_locked) {
+			// If the system is locked, we do everything _but_ actually setting
+			// focus. This includes making our internals think that this view is
+			// focused.
+			wlc_view_focus(c->handle);
+		}
 		if (c->parent->layout != L_TABBED && c->parent->layout != L_STACKED) {
 			update_container_border(c);
 		}
 
-		// rearrange if parent container is tabbed/stacked
 		swayc_t *parent = swayc_tabbed_stacked_ancestor(c);
 		if (parent != NULL) {
 			arrange_backgrounds();
@@ -174,7 +174,6 @@ bool set_focused_container_for(swayc_t *a, swayc_t *c) {
 		return false;
 	}
 	swayc_t *find = c;
-	// Ensure that a is an ancestor of c
 	while (find != a && (find = find->parent)) {
 		if (find == &root_container) {
 			return false;