7 files changed, 47 insertions, 0 deletions

diff --git a/include/sway/commands.h b/include/sway/commands.h
index e51b12fd..226cf932 100644
--- a/include/sway/commands.h
+++ b/include/sway/commands.h
@@ -103,6 +103,7 @@ sway_cmd cmd_client_urgent;
 sway_cmd cmd_client_placeholder;
 sway_cmd cmd_client_background;
 sway_cmd cmd_commands;
+sway_cmd cmd_create_output;
 sway_cmd cmd_debuglog;
 sway_cmd cmd_default_border;
 sway_cmd cmd_default_floating_border;
diff --git a/include/sway/tree/view.h b/include/sway/tree/view.h
index 439dc1bf..d10251dd 100644
--- a/include/sway/tree/view.h
+++ b/include/sway/tree/view.h
@@ -61,6 +61,8 @@ struct sway_view {
         struct sway_container *container; // NULL if unmapped and transactions finished
         struct wlr_surface *surface; // NULL for unmapped views
 
+        pid_t pid;
+
         // Geometry of the view itself (excludes borders) in layout coordinates
         double x, y;
         int width, height;
diff --git a/sway/commands.c b/sway/commands.c
index 32079492..07169f1e 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -143,6 +143,7 @@ static struct cmd_handler config_handlers[] = {
 /* Runtime-only commands. Keep alphabetized */
 static struct cmd_handler command_handlers[] = {
         { "border", cmd_border },
+        { "create_output", cmd_create_output },
         { "exit", cmd_exit },
         { "floating", cmd_floating },
         { "fullscreen", cmd_fullscreen },
diff --git a/sway/commands/create_output.c b/sway/commands/create_output.c
new file mode 100644
index 00000000..a852c2a0
--- /dev/null
+++ b/sway/commands/create_output.c
@@ -0,0 +1,39 @@
+#include <wlr/backend/multi.h>
+#include <wlr/backend/wayland.h>
+#include <wlr/backend/x11.h>
+#include "sway/commands.h"
+#include "sway/server.h"
+#include "log.h"
+
+static void create_output(struct wlr_backend *backend, void *data) {
+        bool *done = data;
+        if (*done) {
+                return;
+        }
+
+        if (wlr_backend_is_wl(backend)) {
+                wlr_wl_output_create(backend);
+                *done = true;
+        } else if (wlr_backend_is_x11(backend)) {
+                wlr_x11_output_create(backend);
+                *done = true;
+        }
+}
+
+/**
+ * This command is intended for developer use only.
+ */
+struct cmd_results *cmd_create_output(int argc, char **argv) {
+        sway_assert(wlr_backend_is_multi(server.backend),
+                        "Expected a multi backend");
+
+        bool done = false;
+        wlr_multi_for_each_backend(server.backend, create_output, &done);
+
+        if (!done) {
+                return cmd_results_new(CMD_INVALID, "create_output",
+                                "Can only create outputs for Wayland or X11 backends");
+        }
+
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 52278be2..f054ac9f 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -221,6 +221,8 @@ static const char *describe_container_border(enum sway_container_border border)
 }
 
 static void ipc_json_describe_view(struct sway_container *c, json_object *object) {
+        json_object_object_add(object, "pid", json_object_new_int(c->view->pid));
+
         const char *app_id = view_get_app_id(c->view);
         json_object_object_add(object, "app_id",
                         app_id ? json_object_new_string(app_id) : NULL);
diff --git a/sway/meson.build b/sway/meson.build
index 01c83a33..d67a4c64 100644
--- a/sway/meson.build
+++ b/sway/meson.build
@@ -35,6 +35,7 @@ sway_sources = files(
         'commands/bind.c',
         'commands/border.c',
         'commands/client.c',
+        'commands/create_output.c',
         'commands/default_border.c',
         'commands/default_floating_border.c',
         'commands/default_orientation.c',
diff --git a/sway/tree/view.c b/sway/tree/view.c
index e4e1c161..4398f518 100644
--- a/sway/tree/view.c
+++ b/sway/tree/view.c
@@ -470,6 +470,7 @@ static struct sway_workspace *select_workspace(struct sway_view *view) {
                 wl_resource_get_client(view->surface->resource);
         wl_client_get_credentials(client, &pid, NULL, NULL);
 #endif
+        view->pid = pid;
         ws = root_workspace_for_pid(pid);
         if (ws) {
                 return ws;