From f2be10fd43a38e0a727f679aae26737470a15a77 Mon Sep 17 00:00:00 2001 From: Guido Cella Date: Mon, 21 Mar 2022 23:03:52 +0100 Subject: implement drag and drop MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit For brevity, only a single drag icon at a time is supported. Co-authored-by: Leonardo Hernández Hernández --- dwl.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/dwl.c b/dwl.c index 222cb62..18c2d60 100644 --- a/dwl.c +++ b/dwl.c @@ -216,6 +216,7 @@ static void cursorframe(struct wl_listener *listener, void *data); static void destroylayersurfacenotify(struct wl_listener *listener, void *data); static void destroynotify(struct wl_listener *listener, void *data); static Monitor *dirtomon(enum wlr_direction dir); +static void dragicondestroy(struct wl_listener *listener, void *data); static void focusclient(Client *c, int lift); static void focusmon(const Arg *arg); static void focusstack(const Arg *arg); @@ -243,6 +244,7 @@ static void printstatus(void); static void quit(const Arg *arg); static void quitsignal(int signo); static void rendermon(struct wl_listener *listener, void *data); +static void requeststartdrag(struct wl_listener *listener, void *data); static void resize(Client *c, int x, int y, int w, int h, int interact); static void run(char *startup_cmd); static Client *selclient(void); @@ -257,6 +259,7 @@ static void setmon(Client *c, Monitor *m, unsigned int newtags); static void setup(void); static void sigchld(int unused); static void spawn(const Arg *arg); +static void startdrag(struct wl_listener *listener, void *data); static void tag(const Arg *arg); static void tagmon(const Arg *arg); static void tile(Monitor *m); @@ -329,6 +332,9 @@ static struct wl_listener request_activate = {.notify = urgent}; static struct wl_listener request_cursor = {.notify = setcursor}; static struct wl_listener request_set_psel = {.notify = setpsel}; static struct wl_listener request_set_sel = {.notify = setsel}; +static struct wl_listener request_start_drag = {.notify = requeststartdrag}; +static struct wl_listener start_drag = {.notify = startdrag}; +static struct wl_listener drag_icon_destroy = {.notify = dragicondestroy}; #ifdef XWAYLAND static void activatex11(struct wl_listener *listener, void *data); @@ -896,6 +902,16 @@ destroynotify(struct wl_listener *listener, void *data) free(c); } +void +dragicondestroy(struct wl_listener *listener, void *data) +{ + struct wlr_drag_icon *icon = data; + wlr_scene_node_destroy(icon->data); + // Focus enter isn't sent during drag, so refocus the focused node. + focusclient(selclient(), 1); + motionnotify(0); +} + void togglefullscreen(const Arg *arg) { @@ -1273,11 +1289,16 @@ motionnotify(uint32_t time) /* time is 0 in internal calls meant to restore pointer focus. */ if (time) { + struct wlr_drag_icon *icon; wlr_idle_notify_activity(idle, seat); /* Update selmon (even while dragging a window) */ if (sloppyfocus) selmon = xytomon(cursor->x, cursor->y); + + if (seat->drag && (icon = seat->drag->icon)) + wlr_scene_node_set_position(icon->data, cursor->x + icon->surface->sx, + cursor->y + icon->surface->sy); } /* If we are currently grabbing the mouse, handle and return */ @@ -1538,6 +1559,18 @@ resize(Client *c, int x, int y, int w, int h, int interact) c->geom.height - 2 * c->bw); } +void +requeststartdrag(struct wl_listener *listener, void *data) +{ + struct wlr_seat_request_start_drag_event *event = data; + + if (wlr_seat_validate_pointer_grab_serial(seat, event->origin, + event->serial)) + wlr_seat_start_pointer_drag(seat, event->drag, event->serial); + else + wlr_data_source_destroy(event->drag->source); +} + void run(char *startup_cmd) { @@ -1850,6 +1883,8 @@ setup(void) wl_signal_add(&seat->events.request_set_cursor, &request_cursor); wl_signal_add(&seat->events.request_set_selection, &request_set_sel); wl_signal_add(&seat->events.request_set_primary_selection, &request_set_psel); + wl_signal_add(&seat->events.request_start_drag, &request_start_drag); + wl_signal_add(&seat->events.start_drag, &start_drag); output_mgr = wlr_output_manager_v1_create(dpy); wl_signal_add(&output_mgr->events.apply, &output_mgr_apply); @@ -1900,6 +1935,19 @@ spawn(const Arg *arg) } } +void +startdrag(struct wl_listener *listener, void *data) +{ + struct wlr_drag *drag = data; + + if (!drag->icon) + return; + + drag->icon->data = wlr_scene_subsurface_tree_create(layers[LyrTop], drag->icon->surface); + wlr_scene_node_raise_to_top(drag->icon->data); + wl_signal_add(&drag->icon->events.destroy, &drag_icon_destroy); +} + void tag(const Arg *arg) { -- cgit v1.2.3