Use opaque region to determine if frame done should be sent

3 files changed, 52 insertions, 2 deletions

diff --git a/include/sway/output.h b/include/sway/output.h
index 19fc5e99..e6fe55c6 100644
--- a/include/sway/output.h
+++ b/include/sway/output.h
@@ -54,4 +54,8 @@ void output_damage_whole_container(struct sway_output *output,
 struct sway_container *output_by_name(const char *name);
 
 void output_enable(struct sway_output *output);
+
+bool output_has_opaque_lockscreen(struct sway_output *output,
+                struct sway_seat *seat);
+
 #endif
diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index 52bd1666..a6b2ebc2 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -915,6 +915,36 @@ static struct sway_container *output_get_active_workspace(
         return workspace;
 }
 
+bool output_has_opaque_lockscreen(struct sway_output *output,
+                struct sway_seat *seat) {
+        if (!seat->exclusive_client) {
+                return false;
+        }
+
+        struct wlr_layer_surface *wlr_layer_surface;
+        wl_list_for_each(wlr_layer_surface, &server.layer_shell->surfaces, link) {
+                if (wlr_layer_surface->output != output->wlr_output) {
+                        continue;
+                }
+                struct wlr_surface *wlr_surface = wlr_layer_surface->surface;
+                if (wlr_surface->resource->client != seat->exclusive_client) {
+                        continue;
+                }
+                int nrects;
+                pixman_box32_t *rects =
+                        pixman_region32_rectangles(&wlr_surface->current->opaque, &nrects);
+                for (int i = 0; i < nrects; ++i) {
+                        pixman_box32_t *rect = &rects[i];
+                        if (rect->x1 <= 0 && rect->y1 <= 0 &&
+                                        rect->x2 >= output->swayc->current.swayc_width &&
+                                        rect->y2 >= output->swayc->current.swayc_height) {
+                                return true;
+                        }
+                }
+        }
+        return false;
+}
+
 static void render_output(struct sway_output *output, struct timespec *when,
                 pixman_region32_t *damage) {
         struct wlr_output *wlr_output = output->wlr_output;
@@ -950,7 +980,7 @@ static void render_output(struct sway_output *output, struct timespec *when,
         struct sway_view *fullscreen_view = workspace->current.ws_fullscreen;
         struct sway_seat *seat = input_manager_current_seat(input_manager);
 
-        if (seat->exclusive_client && seat->focused_layer) {
+        if (output_has_opaque_lockscreen(output, seat)) {
                 float clear_color[] = {0.0f, 0.0f, 0.0f, 1.0f};
 
                 int nrects;
@@ -1103,7 +1133,8 @@ static void send_frame_done(struct sway_output *output, struct timespec *when) {
         struct send_frame_done_data data = {
                 .output = output,
                 .when = when,
-                .exclusive_client = seat->exclusive_client,
+                .exclusive_client = output_has_opaque_lockscreen(output, seat) ?
+                        seat->exclusive_client : NULL,
         };
 
         struct sway_container *workspace = output_get_active_workspace(output);
diff --git a/swaylock/main.c b/swaylock/main.c
index f31ed679..a7a68e9b 100644
--- a/swaylock/main.c
+++ b/swaylock/main.c
@@ -111,12 +111,27 @@ static void create_layer_surface(struct swaylock_surface *surface) {
         wl_surface_commit(surface->surface);
 }
 
+static bool image_is_opaque(cairo_surface_t *image) {
+        return cairo_surface_get_content(image) == CAIRO_CONTENT_COLOR;
+}
+
 static void layer_surface_configure(void *data,
                 struct zwlr_layer_surface_v1 *layer_surface,
                 uint32_t serial, uint32_t width, uint32_t height) {
         struct swaylock_surface *surface = data;
         surface->width = width;
         surface->height = height;
+
+        if (image_is_opaque(surface->image) &&
+                        surface->state->args.mode != BACKGROUND_MODE_CENTER &&
+                        surface->state->args.mode != BACKGROUND_MODE_FIT) {
+                struct wl_region *region =
+                        wl_compositor_create_region(surface->state->compositor);
+                wl_region_add(region, 0, 0, width, height);
+                wl_surface_set_opaque_region(surface->surface, region);
+                wl_region_destroy(region);
+        }
+
         zwlr_layer_surface_v1_ack_configure(layer_surface, serial);
         render_frame(surface);
 }