[PATCH libinput 11/11] touchpad: Add support for swipe gestures

[Hans de Goede]

Add support for swipe gestures.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 src/evdev-mt-touchpad-gestures.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/evdev-mt-touchpad-gestures.c b/src/evdev-mt-touchpad-gestures.c
index e429efe..faf5824 100644
--- a/src/evdev-mt-touchpad-gestures.c
+++ b/src/evdev-mt-touchpad-gestures.c
@@ -25,6 +25,7 @@
 #include <assert.h>
 #include <math.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <limits.h>
 
 #include "evdev-mt-touchpad.h"
@@ -70,6 +71,13 @@ tp_gesture_start(struct tp_dispatch *tp, uint64_t time)
 	case 2:
 		/* NOP */
 		break;
+	case 3:
+	case 4:
+		gesture_notify_swipe(&tp->device->base, time,
+				     LIBINPUT_EVENT_GESTURE_SWIPE_START,
+				     tp->gesture.finger_mode,
+				     0, 0, 0, 0);
+		break;
 	}
 	tp->gesture.started = true;
 }
@@ -112,6 +120,23 @@ tp_gesture_post_twofinger_scroll(struct tp_dispatch *tp, uint64_t time)
 			  dx, dy);
 }
 
+static void
+tp_gesture_post_swipe(struct tp_dispatch *tp, uint64_t time)
+{
+	double dx, dy, dx_unaccel, dy_unaccel;
+
+	tp_get_touches_delta(tp, &dx, &dy, true);
+	tp_filter_motion(tp, &dx, &dy, &dx_unaccel, &dy_unaccel, time);
+
+	if (dx != 0.0 || dy != 0.0 || dx_unaccel != 0.0 || dy_unaccel != 0.0) {
+		tp_gesture_start(tp, time);
+		gesture_notify_swipe(&tp->device->base, time,
+				     LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE,
+				     tp->gesture.finger_mode,
+				     dx, dy, dx_unaccel, dy_unaccel);
+	}
+}
+
 void
 tp_gesture_post_events(struct tp_dispatch *tp, uint64_t time)
 {
@@ -136,6 +161,10 @@ tp_gesture_post_events(struct tp_dispatch *tp, uint64_t time)
 	case 2:
 		tp_gesture_post_twofinger_scroll(tp, time);
 		break;
+	case 3:
+	case 4:
+		tp_gesture_post_swipe(tp, time);
+		break;
 	}
 }
 
@@ -157,6 +186,13 @@ tp_gesture_stop(struct tp_dispatch *tp, uint64_t time)
 	case 2:
 		tp_gesture_stop_twofinger_scroll(tp, time);
 		break;
+	case 3:
+	case 4:
+		gesture_notify_swipe(&tp->device->base, time,
+				     LIBINPUT_EVENT_GESTURE_SWIPE_END,
+				     tp->gesture.finger_mode,
+				     0, 0, 0, 0);
+		break;
 	}
 	tp->gesture.started = false;
 }
-- 
2.1.0