Add heuristics to differentiate touchpads

Use libinput_device_config_tap_get_finger_count to determine whether
a pointer is a touchpad.

swaymsg is also updated to reflect the new touchpad type.

1 files changed, 34 insertions, 0 deletions

diff --git a/sway/input/input-manager.c b/sway/input/input-manager.c
index adb36af9..0c5254bd 100644
--- a/sway/input/input-manager.c
+++ b/sway/input/input-manager.c
@@ -71,6 +71,40 @@ char *input_device_get_identifier(struct wlr_input_device *device) {
         return identifier;
 }
 
+static bool device_is_touchpad(struct sway_input_device *device) {
+        if (device->wlr_device->type != WLR_INPUT_DEVICE_POINTER ||
+                        !wlr_input_device_is_libinput(device->wlr_device)) {
+                return false;
+        }
+
+        struct libinput_device *libinput_device =
+                wlr_libinput_get_device_handle(device->wlr_device);
+
+        return libinput_device_config_tap_get_finger_count(libinput_device) > 0;
+}
+
+const char *input_device_get_type(struct sway_input_device *device) {
+        switch (device->wlr_device->type) {
+        case WLR_INPUT_DEVICE_POINTER:
+                if (device_is_touchpad(device)) {
+                        return "touchpad";
+                } else {
+                        return "pointer";
+                }
+        case WLR_INPUT_DEVICE_KEYBOARD:
+                return "keyboard";
+        case WLR_INPUT_DEVICE_TOUCH:
+                return "touch";
+        case WLR_INPUT_DEVICE_TABLET_TOOL:
+                return "tablet_tool";
+        case WLR_INPUT_DEVICE_TABLET_PAD:
+                return "tablet_pad";
+        case WLR_INPUT_DEVICE_SWITCH:
+                return "switch";
+        }
+        return "unknown";
+}
+
 static struct sway_input_device *input_sway_device_from_wlr(
                 struct wlr_input_device *device) {
         struct sway_input_device *input_device = NULL;