sway/commands: introduce output leasing command

include/sway/commands.h

@@ -283,6 +283,7 @@ sway_cmd output_cmd_background;
 sway_cmd output_cmd_disable;
 sway_cmd output_cmd_dpms;
 sway_cmd output_cmd_enable;
+sway_cmd output_cmd_leasing;
 sway_cmd output_cmd_max_render_time;
 sway_cmd output_cmd_mode;
 sway_cmd output_cmd_modeline;

sway/commands/output.c

@@ -13,6 +13,7 @@ static const struct cmd_handler output_handlers[] = {
 	{ "disable", output_cmd_disable },
 	{ "dpms", output_cmd_dpms },
 	{ "enable", output_cmd_enable },
+	{ "leasing", output_cmd_leasing },
 	{ "max_render_time", output_cmd_max_render_time },
 	{ "mode", output_cmd_mode },
 	{ "modeline", output_cmd_modeline },

sway/commands/output/leasing.c

@@ -0,0 +1,66 @@
+#include "sway/commands.h"
+#include "sway/output.h"
+#include "log.h"
+#include "util.h"
+
+struct cmd_results *output_cmd_leasing(int argc, char **argv) {
+	if (!server.drm_lease_manager) {
+		return cmd_results_new(CMD_FAILURE,
+			"DRM lease manager interface not available");
+	}
+
+	if (!config->handler_context.output_config) {
+		return cmd_results_new(CMD_FAILURE, "Missing output config");
+	}
+	
+	const char *oc_name = config->handler_context.output_config->name;
+	if (strcmp(oc_name, "*") == 0) {
+		return cmd_results_new(CMD_INVALID,
+			"Cannot apply leasing to all outputs");
+	}
+	
+	struct sway_output *sway_output = all_output_by_name_or_id(oc_name);
+	if (!sway_output || !sway_output->wlr_output) {
+		return cmd_results_new(CMD_FAILURE,
+			"Cannot apply leasing to unknown output %s", oc_name);
+	}
+
+	if (argc == 0) {
+		return cmd_results_new(CMD_INVALID, "Missing leasing argument");
+	}
+
+	bool status = true;
+	if (parse_boolean(argv[0], status)) {
+		if (sway_output->leasing) {
+			return cmd_results_new(CMD_INVALID,
+				"Output %s is already out for leasing", oc_name);
+		}
+		
+		sway_output->leasing = true;
+		output_disable(sway_output);
+		wlr_output_layout_remove(root->output_layout, sway_output->wlr_output);
+		
+		sway_log(SWAY_DEBUG, "Offering output %s for leasing", oc_name);
+		wlr_drm_lease_v1_manager_offer_output(server.drm_lease_manager,
+			sway_output->wlr_output);
+	
+		config->handler_context.output_config->enabled = 0;
+		
+	} else {
+		if (!sway_output->leasing) {
+			return cmd_results_new(CMD_INVALID,
+				"Output %s is already not available for leasing", oc_name);
+		}
+
+		sway_log(SWAY_DEBUG, "Withdrawing output %s from leasing", oc_name);
+		wlr_drm_lease_v1_manager_withdraw_output(server.drm_lease_manager,
+			sway_output->wlr_output);
+
+		sway_output->leasing = false;
+		output_enable(sway_output);
+		
+		config->handler_context.output_config->enabled = 1;
+	}
+
+	return NULL;
+}

sway/meson.build

@@ -188,6 +188,7 @@ sway_sources = files(
 	'commands/output/disable.c',
 	'commands/output/dpms.c',
 	'commands/output/enable.c',
+	'commands/output/leasing.c',
 	'commands/output/max_render_time.c',
 	'commands/output/mode.c',
 	'commands/output/position.c',

sway/sway-output.5.scd

@@ -180,6 +180,11 @@ must be separated by one space. For example:
 	updated to work with different bit depths. This command is experimental,
 	and may be removed or changed in the future.
 
+*output* <name> leasing on|off
+	Enables or disables DRM leasing on a given output, the DRM lease
+	interface must be active when calling this command. Outputs offered to
+	leasing will be disabled until taken off from leasing.
+
 # SEE ALSO
 
 *sway*(5) *sway-input*(5)