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implement basic drag and drop

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ARDiDo 2021-10-03 13:33:38 -04:00 • committed by Johan Malm
parent 23f28e5082
commit 6bf3bb97f5
3 changed files with 70 additions and 1 deletions
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43
src/cursor.c
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@ -57,6 +57,19 @@ request_set_primary_selection_notify(struct wl_listener *listener, void *data)
event->serial);
}
static void
request_start_drag_notify(struct wl_listener *listener, void *data)
{
struct seat *seat = wl_container_of(
listener, seat, request_start_drag);
struct wlr_seat_request_start_drag_event *event = data;
if (wlr_seat_validate_pointer_grab_serial(seat->seat, event->origin, event->serial)) {
wlr_seat_start_pointer_drag(seat->seat, event->drag, event->serial);
} else {
wlr_data_source_destroy(event->drag->source);
}
}
static void
process_cursor_move(struct server *server, uint32_t time)
{
@ -190,7 +203,7 @@ process_cursor_motion(struct server *server, uint32_t time)
* the pointer over a window.
*/
wlr_seat_pointer_notify_enter(wlr_seat, surface, sx, sy);
if (!focus_changed) {
if (!focus_changed || server->seat.drag_icon) {
/*
* The enter event contains coordinates, so we only need
* to notify on motion if the focus did not change.
@ -206,6 +219,15 @@ process_cursor_motion(struct server *server, uint32_t time)
}
}
void
start_drag(struct wl_listener *listener, void *data)
{
struct seat *seat = wl_container_of(listener, seat, start_drag);
struct wlr_drag *wlr_drag = data;
seat->drag_icon = wlr_drag->icon;
wl_signal_add(&seat->drag_icon->events.destroy, &seat->destroy_drag);
}
static void
cursor_motion(struct wl_listener *listener, void *data)
{
@ -228,6 +250,18 @@ cursor_motion(struct wl_listener *listener, void *data)
process_cursor_motion(seat->server, event->time_msec);
}
void
destroy_drag(struct wl_listener *listener, void *data)
{
struct seat *seat = wl_container_of(listener, seat, destroy_drag);
if (!seat->drag_icon) {
return;
}
seat->drag_icon = NULL;
desktop_focus_topmost_mapped_view(seat->server);
}
void
cursor_motion_absolute(struct wl_listener *listener, void *data)
{
@ -442,6 +476,13 @@ cursor_init(struct seat *seat)
seat->request_set_selection.notify = request_set_selection_notify;
wl_signal_add(&seat->seat->events.request_set_selection,
&seat->request_set_selection);
seat->request_start_drag.notify = request_start_drag_notify;
wl_signal_add(&seat->seat->events.request_start_drag,
&seat->request_start_drag);
seat->start_drag.notify = start_drag;
wl_signal_add(&seat->seat->events.start_drag,
&seat->start_drag);
seat->destroy_drag.notify = destroy_drag;
seat->request_set_primary_selection.notify =
request_set_primary_selection_notify;