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backend/libinput: handle high-res scroll events

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Receive high-resolution scroll events from libinput and emit the
appropiate wlr_pointer signal.
This commit is contained in:
José Expósito 2021-09-20 19:47:03 +02:00
parent 763cf1915b
commit d18b85c88a
3 changed files with 65 additions and 0 deletions
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45
backend/libinput/pointer.c
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@ -141,6 +141,51 @@ void handle_pointer_axis(struct libinput_event *event,
wlr_signal_emit_safe(&wlr_dev->pointer->events.frame, wlr_dev->pointer);
}
#if LIBINPUT_HAS_SCROLL_VALUE120
void handle_pointer_axis_value120(struct libinput_event *event,
struct libinput_device *device,
enum wlr_axis_source source) {
struct wlr_input_device *wlr_dev =
get_appropriate_device(WLR_INPUT_DEVICE_POINTER, device);
if (!wlr_dev) {
wlr_log(WLR_DEBUG, "Got a pointer event for a device with no pointers?");
return;
}
struct libinput_event_pointer *pevent =
libinput_event_get_pointer_event(event);
struct wlr_event_pointer_axis_value120 wlr_event = { 0 };
wlr_event.device = wlr_dev;
wlr_event.time_msec =
usec_to_msec(libinput_event_pointer_get_time_usec(pevent));
wlr_event.source = source;
const enum libinput_pointer_axis axes[] = {
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL,
};
for (size_t i = 0; i < sizeof(axes) / sizeof(axes[0]); ++i) {
if (libinput_event_pointer_has_axis(pevent, axes[i])) {
switch (axes[i]) {
case LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL:
wlr_event.orientation = WLR_AXIS_ORIENTATION_VERTICAL;
break;
case LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL:
wlr_event.orientation = WLR_AXIS_ORIENTATION_HORIZONTAL;
break;
}
wlr_event.delta =
libinput_event_pointer_get_scroll_value(pevent, axes[i]);
if (source == WLR_AXIS_SOURCE_WHEEL) {
wlr_event.delta_value120 =
libinput_event_pointer_get_scroll_value_v120(pevent, axes[i]);
}
wlr_signal_emit_safe(&wlr_dev->pointer->events.axis_value120, &wlr_event);
}
}
wlr_signal_emit_safe(&wlr_dev->pointer->events.frame, wlr_dev->pointer);
}
#endif
void handle_pointer_swipe_begin(struct libinput_event *event,
struct libinput_device *libinput_dev) {
struct wlr_input_device *wlr_dev =