Support legacy devices

Simulate MT touch events for legacy devices that support the
DOUBLETAP, TRIPLETAP and QUADTAP events. This allows multi-finger
tap and drag gestures to be emitted, providing a basic level of
MT functionality for legacy devices.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/grail-touch.h b/include/grail-touch.h
index acfc779..9c63c80 100644
--- a/include/grail-touch.h
+++ b/include/grail-touch.h
@@ -72,6 +72,7 @@ struct touch_dev {
         int state;
 };
 
+int touch_caps_is_supported(struct touch_dev *dev, int fd);
 void touch_caps_init(struct touch_dev *dev);
 float touch_angle(const struct touch_dev *dev, int orientation);
 float touch_pressure(const struct touch_dev *dev, int pressure);