swayfx/sway/input/seatop_move_floating.c
Kenny Levinsen b5b628cb41 input: Only commit transactions when necessary
There is no need to check for transactions at the end of every user
input, as the vast majority of input will not issue transactions. This
implementation can also hide where changes are made without an
appropriate transaction commit, as a future unrelated input would issue
the commit instead.

Instead, commit transactions in places where changes are made or are
likely to be made.
2021-02-14 13:19:08 -05:00

85 lines
2.4 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <wlr/types/wlr_cursor.h>
#include "sway/desktop.h"
#include "sway/desktop/transaction.h"
#include "sway/input/cursor.h"
#include "sway/input/seat.h"
struct seatop_move_floating_event {
struct sway_container *con;
double dx, dy; // cursor offset in container
};
static void finalize_move(struct sway_seat *seat) {
struct seatop_move_floating_event *e = seat->seatop_data;
// We "move" the container to its own location
// so it discovers its output again.
container_floating_move_to(e->con, e->con->x, e->con->y);
transaction_commit_dirty();
seatop_begin_default(seat);
}
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) {
if (seat->cursor->pressed_button_count == 0) {
finalize_move(seat);
}
}
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) {
finalize_move(seat);
}
}
static void handle_pointer_motion(struct sway_seat *seat, uint32_t time_msec) {
struct seatop_move_floating_event *e = seat->seatop_data;
struct wlr_cursor *cursor = seat->cursor->cursor;
desktop_damage_whole_container(e->con);
container_floating_move_to(e->con, cursor->x - e->dx, cursor->y - e->dy);
desktop_damage_whole_container(e->con);
transaction_commit_dirty();
}
static void handle_unref(struct sway_seat *seat, struct sway_container *con) {
struct seatop_move_floating_event *e = seat->seatop_data;
if (e->con == con) {
seatop_begin_default(seat);
}
}
static const struct sway_seatop_impl seatop_impl = {
.button = handle_button,
.pointer_motion = handle_pointer_motion,
.tablet_tool_tip = handle_tablet_tool_tip,
.unref = handle_unref,
};
void seatop_begin_move_floating(struct sway_seat *seat,
struct sway_container *con) {
seatop_end(seat);
struct sway_cursor *cursor = seat->cursor;
struct seatop_move_floating_event *e =
calloc(1, sizeof(struct seatop_move_floating_event));
if (!e) {
return;
}
e->con = con;
e->dx = cursor->cursor->x - con->x;
e->dy = cursor->cursor->y - con->y;
seat->seatop_impl = &seatop_impl;
seat->seatop_data = e;
container_raise_floating(con);
transaction_commit_dirty();
cursor_set_image(cursor, "grab", NULL);
wlr_seat_pointer_notify_clear_focus(seat->wlr_seat);
}