pointer_constraint: change to a seat subcommand

This changes the `pointer_constraint` command to be a subcommand of seat
to allow for per-seat settings. The current implementation that is not a
seat subcommand will only operate on the current seat and will segfault
in the config due to `config->handler_context.seat` only being set at
runtime.

This also allows for the wildcard identifier to be used to alter the
pointer constraint settings on all seats and allows for the setting to
be merged with the rest of the seat config.

1 files changed, 58 insertions, 0 deletions

diff --git a/sway/commands/seat/pointer_constraint.c b/sway/commands/seat/pointer_constraint.c
new file mode 100644
index 00000000..3890ebde
--- /dev/null
+++ b/sway/commands/seat/pointer_constraint.c
@@ -0,0 +1,58 @@
+#include <string.h>
+#include <wlr/types/wlr_pointer_constraints_v1.h>
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "sway/input/cursor.h"
+#include "sway/input/seat.h"
+
+enum operation {
+	OP_ENABLE,
+	OP_DISABLE,
+	OP_ESCAPE,
+};
+
+// pointer_constraint [enable|disable|escape]
+struct cmd_results *seat_cmd_pointer_constraint(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "pointer_constraint", EXPECTED_EQUAL_TO, 1))) {
+		return error;
+	}
+	if (!config->handler_context.seat_config) {
+		return cmd_results_new(CMD_FAILURE, "No seat defined");
+	}
+
+	enum operation op;
+	if (strcmp(argv[0], "enable") == 0) {
+		op = OP_ENABLE;
+	} else if (strcmp(argv[0], "disable") == 0) {
+		op = OP_DISABLE;
+	} else if (strcmp(argv[0], "escape") == 0) {
+		op = OP_ESCAPE;
+	} else {
+		return cmd_results_new(CMD_FAILURE, "Expected enable|disable|escape");
+	}
+
+	if (op == OP_ESCAPE && config->reading) {
+		return cmd_results_new(CMD_FAILURE, "Can only escape at runtime.");
+	}
+
+	struct seat_config *seat_config = config->handler_context.seat_config;
+	switch (op) {
+	case OP_ENABLE:
+		seat_config->allow_constrain = CONSTRAIN_ENABLE;
+		break;
+	case OP_DISABLE:
+		seat_config->allow_constrain = CONSTRAIN_DISABLE;
+		/* fallthrough */
+	case OP_ESCAPE:;
+		bool wildcard = !strcmp(seat_config->name, "*");
+		struct sway_seat *seat = NULL;
+		wl_list_for_each(seat, &server.input->seats, link) {
+			if (wildcard || !strcmp(seat->wlr_seat->name, seat_config->name)) {
+				sway_cursor_constrain(seat->cursor, NULL);
+			}
+		}
+		break;
+	}
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}