From 6accc77d444e80df5eddc04d54affe51433c9617 Mon Sep 17 00:00:00 2001
From: elviosak <33790211+elviosak@users.noreply.github.com>
Date: Sun, 3 May 2026 06:05:25 -0300
Subject: [PATCH 1/3] When output is turned off and there is a mirror, assign
 it to views.

---
 src/output.c | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/src/output.c b/src/output.c
index aea35062..8cb39c39 100644
--- a/src/output.c
+++ b/src/output.c
@@ -1080,18 +1080,44 @@ output_usable_area_in_layout_coords(struct output *output)
 	return box;
 }
 
+static struct output *
+output_get_usable_mirror(struct output *output)
+{
+	struct output *mirror;
+	struct wlr_box mirror_box, output_box;
+	wlr_output_layout_get_box(server.output_layout, output->wlr_output, &output_box);
+	wl_list_for_each(mirror, &server.outputs, link) {
+		if (!output_is_usable(mirror) || output->id_bit == mirror->id_bit) {
+			continue;
+		}
+		wlr_output_layout_get_box(server.output_layout, mirror->wlr_output, &mirror_box);
+		if (wlr_box_equal(&output_box, &mirror_box)) {
+			return mirror;
+		}
+	}
+	return NULL;
+}
+
 void
 handle_output_power_manager_set_mode(struct wl_listener *listener, void *data)
 {
 	struct wlr_output_power_v1_set_mode_event *event = data;
 	struct output *output = event->output->data;
 	assert(output);
-
+	struct output *mirror = output_get_usable_mirror(output);
 	switch (event->mode) {
 	case ZWLR_OUTPUT_POWER_V1_MODE_OFF:
 		if (!event->output->enabled) {
 			return;
 		}
+		if (mirror) {
+			struct view *view;
+			for_each_view(view, &server.views, LAB_VIEW_CRITERIA_NONE) {
+				if (view->output == output) {
+					view->output = mirror;
+				}
+			}
+		}
 		wlr_output_state_set_enabled(&output->pending, false);
 		output_state_commit(output);
 		break;

From c802c5875ad28e3d12e3fa74183e7f4e63f08a55 Mon Sep 17 00:00:00 2001
From: elviosak <33790211+elviosak@users.noreply.github.com>
Date: Mon, 4 May 2026 00:15:58 -0300
Subject: [PATCH 2/3] add mirror check for output_nearest_to()

---
 src/output.c | 47 +++++++++++++++++++++++++++--------------------
 1 file changed, 27 insertions(+), 20 deletions(-)

diff --git a/src/output.c b/src/output.c
index 8cb39c39..11a60de0 100644
--- a/src/output.c
+++ b/src/output.c
@@ -927,6 +927,24 @@ output_from_name(const char *name)
 	return NULL;
 }
 
+static struct output *
+output_get_usable_mirror(struct output *output)
+{
+	struct output *mirror;
+	struct wlr_box mirror_box, output_box;
+	wlr_output_layout_get_box(server.output_layout, output->wlr_output, &output_box);
+	wl_list_for_each(mirror, &server.outputs, link) {
+		if (!output_is_usable(mirror) || output->id_bit == mirror->id_bit) {
+			continue;
+		}
+		wlr_output_layout_get_box(server.output_layout, mirror->wlr_output, &mirror_box);
+		if (wlr_box_equal(&output_box, &mirror_box)) {
+			return mirror;
+		}
+	}
+	return NULL;
+}
+
 struct output *
 output_nearest_to(int lx, int ly)
 {
@@ -934,8 +952,15 @@ output_nearest_to(int lx, int ly)
 	wlr_output_layout_closest_point(server.output_layout, NULL, lx, ly,
 		&closest_x, &closest_y);
 
-	return output_from_wlr_output(wlr_output_layout_output_at(server.output_layout,
-			closest_x, closest_y));
+	struct output *output = output_from_wlr_output(wlr_output_layout_output_at(
+		server.output_layout, closest_x, closest_y));
+	if (output && !output_is_usable(output)) {
+		struct output *mirror = output_get_usable_mirror(output);
+		if (mirror) {
+			return mirror;
+		}
+	}
+	return output;
 }
 
 struct output *
@@ -1080,24 +1105,6 @@ output_usable_area_in_layout_coords(struct output *output)
 	return box;
 }
 
-static struct output *
-output_get_usable_mirror(struct output *output)
-{
-	struct output *mirror;
-	struct wlr_box mirror_box, output_box;
-	wlr_output_layout_get_box(server.output_layout, output->wlr_output, &output_box);
-	wl_list_for_each(mirror, &server.outputs, link) {
-		if (!output_is_usable(mirror) || output->id_bit == mirror->id_bit) {
-			continue;
-		}
-		wlr_output_layout_get_box(server.output_layout, mirror->wlr_output, &mirror_box);
-		if (wlr_box_equal(&output_box, &mirror_box)) {
-			return mirror;
-		}
-	}
-	return NULL;
-}
-
 void
 handle_output_power_manager_set_mode(struct wl_listener *listener, void *data)
 {

From abb7431a72990711294ca995b361f9ff6a4a0468 Mon Sep 17 00:00:00 2001
From: elviosak <33790211+elviosak@users.noreply.github.com>
Date: Mon, 4 May 2026 00:44:51 -0300
Subject: [PATCH 3/3] send disabled output to the end of the list so mirror is
 picked first

---
 src/output.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/src/output.c b/src/output.c
index 11a60de0..f8510e56 100644
--- a/src/output.c
+++ b/src/output.c
@@ -952,15 +952,8 @@ output_nearest_to(int lx, int ly)
 	wlr_output_layout_closest_point(server.output_layout, NULL, lx, ly,
 		&closest_x, &closest_y);
 
-	struct output *output = output_from_wlr_output(wlr_output_layout_output_at(
-		server.output_layout, closest_x, closest_y));
-	if (output && !output_is_usable(output)) {
-		struct output *mirror = output_get_usable_mirror(output);
-		if (mirror) {
-			return mirror;
-		}
-	}
-	return output;
+	return output_from_wlr_output(wlr_output_layout_output_at(server.output_layout,
+		closest_x, closest_y));
 }
 
 struct output *
@@ -1124,6 +1117,14 @@ handle_output_power_manager_set_mode(struct wl_listener *listener, void *data)
 					view->output = mirror;
 				}
 			}
+			/**
+			 * Send the output that was turned off to the end of the list
+			 * so wlr_output_* functions pick the mirror first
+			 */
+			struct wlr_output_layout_output *layout_output =
+				wlr_output_layout_get(server.output_layout, output->wlr_output);
+			wl_list_remove(&layout_output->link);
+			wl_list_insert(server.output_layout->outputs.prev, &layout_output->link);
 		}
 		wlr_output_state_set_enabled(&output->pending, false);
 		output_state_commit(output);