[PATCH libinput 04/24] mt-touchpad: Use an axis_frame event to mark the end of scroll changes

[Carlos Garnacho]

If both v/h scroll axes change, users may process both changes at once when
this event is received.

Signed-off-by: Carlos Garnacho <carl...@gnome.org>
---
 src/evdev-mt-touchpad.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
index bbbd8f3..0c4b4dc 100644
--- a/src/evdev-mt-touchpad.c
+++ b/src/evdev-mt-touchpad.c
@@ -451,8 +451,8 @@ static void
 tp_post_twofinger_scroll(struct tp_dispatch *tp, uint32_t time)
 {
        struct tp_touch *t;
-       int nchanged = 0;
-       double dx = 0, dy =0;
+       int nchanged = 0, need_frame = 0;
+       double dx = 0, dy = 0;
        double tmpx, tmpy;
 
        tp_for_each_touch(tp, t) {
@@ -495,6 +495,7 @@ tp_post_twofinger_scroll(struct tp_dispatch *tp, uint32_t 
time)
                                    time,
                                    LIBINPUT_POINTER_AXIS_VERTICAL_SCROLL,
                                    li_fixed_from_double(dy));
+               need_frame = 1;
        }
 
        if (dx != 0.0 &&
@@ -503,7 +504,11 @@ tp_post_twofinger_scroll(struct tp_dispatch *tp, uint32_t 
time)
                                    time,
                                    LIBINPUT_POINTER_AXIS_HORIZONTAL_SCROLL,
                                    li_fixed_from_double(dx));
+               need_frame = 1;
        }
+
+       if (need_frame)
+               pointer_notify_axis_frame(&tp->device->base, time);
 }
 
 static int
@@ -530,6 +535,9 @@ tp_post_scroll_events(struct tp_dispatch *tp, uint32_t time)
                                                    time,
                                                    
LIBINPUT_POINTER_AXIS_HORIZONTAL_SCROLL,
                                                    0);
+                       if (tp->scroll.direction)
+                               pointer_notify_axis_frame(&tp->device->base,
+                                                         time);
                }
        } else {
                tp_post_twofinger_scroll(tp, time);
-- 
1.9.0

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