Enable windows to register to get notified when the mouse wheel is scrolled

This commit is contained in:
David Eklov 2016-07-11 23:15:23 -05:00
parent 250ddc66c6
commit c0b7610c26
2 changed files with 29 additions and 1 deletions

View file

@ -47,7 +47,26 @@ static void pointer_handle_button(void *data, struct wl_pointer *pointer, uint32
}
static void pointer_handle_axis(void *data, struct wl_pointer *pointer,
uint32_t time, uint32_t axis, wl_fixed_t value) {
uint32_t time, uint32_t axis, wl_fixed_t value) {
struct window *window = data;
enum scroll_direction direction;
switch (axis) {
case 0:
direction = wl_fixed_to_double(value) < 0 ? SCROLL_UP : SCROLL_DOWN;
break;
case 1:
direction = wl_fixed_to_double(value) < 0 ? SCROLL_LEFT : SCROLL_RIGHT;
break;
default:
if (!sway_assert(false, "Unexpected axis value")) {
return;
}
}
if (window->pointer_input.notify_scroll) {
window->pointer_input.notify_scroll(window, direction);
}
}
static const struct wl_pointer_listener pointer_listener = {