add cursor configuration

examples/config.c

@@ -67,6 +67,12 @@ static int config_ini_handler(void *user, const char *section, const char *name,
 				wlr_log(L_ERROR, "got unknown transform value: %s", value);
 			}
 		}
+	} else if (strcmp(section, "cursor") == 0) {
+		if (strcmp(name, "map-to-output") == 0) {
+			config->cursor.mapped_output = strdup(value);
+		} else {
+			wlr_log(L_ERROR, "got unknown cursor config: %s", name);
+		}
 	} else {
 		wlr_log(L_ERROR, "got unknown config section: %s", section);
 	}
@@ -128,6 +134,9 @@ void example_config_destroy(struct example_config *config) {
 	if (config->config_path) {
 		free(config->config_path);
 	}
+	if (config->cursor.mapped_output) {
+		free(config->cursor.mapped_output);
+	}
 	free(config);
 }
 

examples/config.h

@@ -13,6 +13,10 @@ struct output_config {
 };
 
 struct example_config {
+	struct {
+		char *mapped_output;
+	} cursor;
+
 	struct wl_list outputs;
 	char *config_path;
 };

examples/pointer.c

@@ -70,6 +70,11 @@ static void handle_output_add(struct output_state *ostate) {
 	sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
 	wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
 
+	char *mapped_output = sample->config->cursor.mapped_output;
+	if (mapped_output && strcmp(mapped_output, wlr_output->name) == 0) {
+		wlr_cursor_map_to_output(sample->cursor, wlr_output);
+	}
+
 	/*
 	// TODO configuration
 	if (strcmp("DP-1", ostate->output->name) == 0) {
@@ -95,6 +100,10 @@ static void handle_output_remove(struct output_state *ostate) {
 	wlr_output_layout_destroy(sample->layout);
 	sample->layout = configure_layout(sample->config, &ostate->compositor->outputs);
 	wlr_cursor_attach_output_layout(sample->cursor, sample->layout);
+
+	if (strcmp(sample->config->cursor.mapped_output, ostate->output->name) == 0) {
+		wlr_cursor_map_to_output(sample->cursor, NULL);
+	}
 }
 
 static void handle_output_resolution(struct compositor_state *state,

examples/wlr-example.ini.example

@@ -30,4 +30,11 @@ rotate=270
 x=1080
 y=232
 
+# Cursor Configuration
+# ~~~~~~~~~~~~~~~~~~~~
+# Value "map-to-output" specifies the output to which the cursor is
+# constrained.
+[cursor]
+map-to-output=HDMI-A-1
+
 # vim:filetype=dosini