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#define _POSIX_C_SOURCE 200809L
#include <float.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_tablet_v2.h>
#include <wlr/types/wlr_touch.h>
#include "sway/input/cursor.h"
#include "sway/input/seat.h"
#include "sway/tree/view.h"
#include "sway/desktop/transaction.h"
#include "log.h"
struct seatop_touch_point_event {
double ref_lx, ref_ly; // touch's x/y at start of op
double ref_con_lx, ref_con_ly; // container's x/y at start of op
int32_t touch_id;
struct wl_list link;
};
struct seatop_down_event {
struct sway_container *con;
struct sway_seat *seat;
struct wl_listener surface_destroy;
struct wlr_surface *surface;
double ref_lx, ref_ly; // cursor's x/y at start of op
double ref_con_lx, ref_con_ly; // container's x/y at start of op
struct wl_list point_events; // seatop_touch_point_event::link
};
static void handle_touch_motion(struct sway_seat *seat,
struct wlr_touch_motion_event *event, double lx, double ly) {
struct seatop_down_event *e = seat->seatop_data;
struct seatop_touch_point_event *point_event;
bool found = false;
wl_list_for_each(point_event, &e->point_events, link) {
if (point_event->touch_id == event->touch_id) {
found = true;
break;
}
}
if (!found) {
return; // Probably not a point_event from this seatop_down
}
double moved_x = lx - point_event->ref_lx;
double moved_y = ly - point_event->ref_ly;
double sx = point_event->ref_con_lx + moved_x;
double sy = point_event->ref_con_ly + moved_y;
wlr_seat_touch_notify_motion(seat->wlr_seat, event->time_msec,
event->touch_id, sx, sy);
}
static void handle_touch_up(struct sway_seat *seat,
struct wlr_touch_up_event *event) {
struct seatop_down_event *e = seat->seatop_data;
struct seatop_touch_point_event *point_event, *tmp;
wl_list_for_each_safe(point_event, tmp, &e->point_events, link) {
if (point_event->touch_id == event->touch_id) {
wl_list_remove(&point_event->link);
free(point_event);
break;
}
}
wlr_seat_touch_notify_up(seat->wlr_seat, event->time_msec, event->touch_id);
if (wl_list_empty(&e->point_events)) {
seatop_begin_default(seat);
}
}
static void handle_touch_down(struct sway_seat *seat,
struct wlr_touch_down_event *event, double lx, double ly) {
struct seatop_down_event *e = seat->seatop_data;
double sx, sy;
struct wlr_surface *surface = NULL;
struct sway_node *focused_node = node_at_coords(seat, seat->touch_x,
seat->touch_y, &surface, &sx, &sy);
if (!surface || surface != e->surface) { // Must start from the initial surface
return;
}
struct seatop_touch_point_event *point_event =
calloc(1, sizeof(struct seatop_touch_point_event));
if (!sway_assert(point_event, "Unable to allocate point_event")) {
return;
}
point_event->touch_id = event->touch_id;
point_event->ref_lx = lx;
point_event->ref_ly = ly;
point_event->ref_con_lx = sx;
point_event->ref_con_ly = sy;
wl_list_insert(&e->point_events, &point_event->link);
wlr_seat_touch_notify_down(seat->wlr_seat, surface, event->time_msec,
event->touch_id, sx, sy);
if (focused_node) {
seat_set_focus(seat, focused_node);
}
}
static void handle_touch_cancel(struct sway_seat *seat,
struct wlr_touch_cancel_event *event) {
struct seatop_down_event *e = seat->seatop_data;
struct seatop_touch_point_event *point_event, *tmp;
wl_list_for_each_safe(point_event, tmp, &e->point_events, link) {
if (point_event->touch_id == event->touch_id) {
wl_list_remove(&point_event->link);
free(point_event);
break;
}
}
if (e->surface) {
wlr_seat_touch_notify_cancel(seat->wlr_seat, e->surface);
}
if (wl_list_empty(&e->point_events)) {
seatop_begin_default(seat);
}
}
static void handle_pointer_axis(struct sway_seat *seat,
struct wlr_pointer_axis_event *event) {
struct sway_input_device *input_device =
event->pointer ? event->pointer->base.data : NULL;
struct input_config *ic =
input_device ? input_device_get_config(input_device) : NULL;
float scroll_factor =
(ic == NULL || ic->scroll_factor == FLT_MIN) ? 1.0f : ic->scroll_factor;
wlr_seat_pointer_notify_axis(seat->wlr_seat, event->time_msec,
event->orientation, scroll_factor * event->delta,
roundf(scroll_factor * event->delta_discrete), event->source);
}
static void handle_button(struct sway_seat *seat, uint32_t time_msec,
struct wlr_input_device *device, uint32_t button,
enum wlr_button_state state) {
seat_pointer_notify_button(seat, time_msec, button, state);
if (seat->cursor->pressed_button_count == 0) {
seatop_begin_default(seat);
}
}
static void handle_pointer_motion(struct sway_seat *seat, uint32_t time_msec) {
struct seatop_down_event *e = seat->seatop_data;
if (seat_is_input_allowed(seat, e->surface)) {
double moved_x = seat->cursor->cursor->x - e->ref_lx;
double moved_y = seat->cursor->cursor->y - e->ref_ly;
double sx = e->ref_con_lx + moved_x;
double sy = e->ref_con_ly + moved_y;
wlr_seat_pointer_notify_motion(seat->wlr_seat, time_msec, sx, sy);
}
}
static void handle_tablet_tool_tip(struct sway_seat *seat,
struct sway_tablet_tool *tool, uint32_t time_msec,
enum wlr_tablet_tool_tip_state state) {
if (state == WLR_TABLET_TOOL_TIP_UP) {
wlr_tablet_v2_tablet_tool_notify_up(tool->tablet_v2_tool);
seatop_begin_default(seat);
}
}
static void handle_tablet_tool_motion(struct sway_seat *seat,
struct sway_tablet_tool *tool, uint32_t time_msec) {
struct seatop_down_event *e = seat->seatop_data;
if (seat_is_input_allowed(seat, e->surface)) {
double moved_x = seat->cursor->cursor->x - e->ref_lx;
double moved_y = seat->cursor->cursor->y - e->ref_ly;
double sx = e->ref_con_lx + moved_x;
double sy = e->ref_con_ly + moved_y;
wlr_tablet_v2_tablet_tool_notify_motion(tool->tablet_v2_tool, sx, sy);
}
}
static void handle_destroy(struct wl_listener *listener, void *data) {
struct seatop_down_event *e =
wl_container_of(listener, e, surface_destroy);
if (e) {
seatop_begin_default(e->seat);
}
}
static void handle_unref(struct sway_seat *seat, struct sway_container *con) {
struct seatop_down_event *e = seat->seatop_data;
if (e->con == con) {
seatop_begin_default(seat);
}
}
static void handle_end(struct sway_seat *seat) {
struct seatop_down_event *e = seat->seatop_data;
wl_list_remove(&e->surface_destroy.link);
}
static const struct sway_seatop_impl seatop_impl = {
.button = handle_button,
.pointer_motion = handle_pointer_motion,
.pointer_axis = handle_pointer_axis,
.tablet_tool_tip = handle_tablet_tool_tip,
.tablet_tool_motion = handle_tablet_tool_motion,
.touch_motion = handle_touch_motion,
.touch_up = handle_touch_up,
.touch_down = handle_touch_down,
.touch_cancel = handle_touch_cancel,
.unref = handle_unref,
.end = handle_end,
.allow_set_cursor = true,
};
void seatop_begin_down(struct sway_seat *seat, struct sway_container *con,
double sx, double sy) {
seatop_begin_down_on_surface(seat, con->view->surface, sx, sy);
struct seatop_down_event *e = seat->seatop_data;
e->con = con;
container_raise_floating(con);
transaction_commit_dirty();
}
void seatop_begin_touch_down(struct sway_seat *seat,
struct wlr_surface *surface, struct wlr_touch_down_event *event,
double sx, double sy, double lx, double ly) {
seatop_begin_down_on_surface(seat, surface, sx, sy);
handle_touch_down(seat, event, lx, ly);
}
void seatop_begin_down_on_surface(struct sway_seat *seat,
struct wlr_surface *surface, double sx, double sy) {
seatop_end(seat);
struct seatop_down_event *e =
calloc(1, sizeof(struct seatop_down_event));
if (!sway_assert(e, "Unable to allocate e")) {
return;
}
e->con = NULL;
e->seat = seat;
e->surface = surface;
wl_signal_add(&e->surface->events.destroy, &e->surface_destroy);
e->surface_destroy.notify = handle_destroy;
e->ref_lx = seat->cursor->cursor->x;
e->ref_ly = seat->cursor->cursor->y;
e->ref_con_lx = sx;
e->ref_con_ly = sy;
wl_list_init(&e->point_events);
seat->seatop_impl = &seatop_impl;
seat->seatop_data = e;
}
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