Add scroll factor config option.

1 files changed, 32 insertions, 0 deletions

diff --git a/sway/commands/input/scroll_factor.c b/sway/commands/input/scroll_factor.c
new file mode 100644
index 00000000..52d943b0
--- /dev/null
+++ b/sway/commands/input/scroll_factor.c
@@ -0,0 +1,32 @@
+#include <errno.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include "sway/config.h"
+#include "sway/commands.h"
+#include "sway/input/input-manager.h"
+#include "util.h"
+
+struct cmd_results *input_cmd_scroll_factor(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "scroll_factor", EXPECTED_AT_LEAST, 1))) {
+                return error;
+        }
+        struct input_config *ic = config->handler_context.input_config;
+        if (!ic) {
+                return cmd_results_new(CMD_FAILURE,
+                        "scroll_factor", "No input device defined.");
+        }
+
+        float scroll_factor = parse_float(argv[0]);
+        if (isnan(scroll_factor)) {
+                return cmd_results_new(CMD_INVALID, "scroll_factor",
+                        "Invalid scroll factor; expected float.");
+        } else if (scroll_factor < 0) {
+                return cmd_results_new(CMD_INVALID, "scroll_factor",
+                        "Scroll factor cannot be negative.");
+        }
+        ic->scroll_factor = scroll_factor;
+
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}