437 lines
13 KiB
C
437 lines
13 KiB
C
#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <wayland-server.h>
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#include <wlr/types/wlr_input_device.h>
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#include <wlr/util/log.h>
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#include "types/wlr_seat.h"
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#include "util/signal.h"
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#include "util/array.h"
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static void default_pointer_enter(struct wlr_seat_pointer_grab *grab,
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struct wlr_surface *surface, double sx, double sy) {
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wlr_seat_pointer_enter(grab->seat, surface, sx, sy);
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}
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static void default_pointer_motion(struct wlr_seat_pointer_grab *grab,
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uint32_t time, double sx, double sy) {
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wlr_seat_pointer_send_motion(grab->seat, time, sx, sy);
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}
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static uint32_t default_pointer_button(struct wlr_seat_pointer_grab *grab,
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uint32_t time, uint32_t button, enum wlr_button_state state) {
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return wlr_seat_pointer_send_button(grab->seat, time, button, state);
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}
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static void default_pointer_axis(struct wlr_seat_pointer_grab *grab,
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uint32_t time, enum wlr_axis_orientation orientation, double value,
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int32_t value_discrete, enum wlr_axis_source source) {
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wlr_seat_pointer_send_axis(grab->seat, time, orientation, value,
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value_discrete, source);
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}
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static void default_pointer_frame(struct wlr_seat_pointer_grab *grab) {
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wlr_seat_pointer_send_frame(grab->seat);
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}
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static void default_pointer_cancel(struct wlr_seat_pointer_grab *grab) {
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// cannot be cancelled
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}
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const struct wlr_pointer_grab_interface default_pointer_grab_impl = {
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.enter = default_pointer_enter,
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.motion = default_pointer_motion,
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.button = default_pointer_button,
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.axis = default_pointer_axis,
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.frame = default_pointer_frame,
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.cancel = default_pointer_cancel,
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};
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static void pointer_send_frame(struct wl_resource *resource) {
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if (wl_resource_get_version(resource) >=
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WL_POINTER_FRAME_SINCE_VERSION) {
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wl_pointer_send_frame(resource);
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}
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}
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static const struct wl_pointer_interface pointer_impl;
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struct wlr_seat_client *wlr_seat_client_from_pointer_resource(
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struct wl_resource *resource) {
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assert(wl_resource_instance_of(resource, &wl_pointer_interface,
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&pointer_impl));
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return wl_resource_get_user_data(resource);
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}
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static const struct wlr_surface_role pointer_cursor_surface_role = {
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.name = "wl_pointer-cursor",
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};
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static void pointer_set_cursor(struct wl_client *client,
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struct wl_resource *pointer_resource, uint32_t serial,
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struct wl_resource *surface_resource,
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int32_t hotspot_x, int32_t hotspot_y) {
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struct wlr_seat_client *seat_client =
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wlr_seat_client_from_pointer_resource(pointer_resource);
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if (seat_client == NULL) {
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return;
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}
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struct wlr_surface *surface = NULL;
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if (surface_resource != NULL) {
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surface = wlr_surface_from_resource(surface_resource);
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if (!wlr_surface_set_role(surface, &pointer_cursor_surface_role, NULL,
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surface_resource, WL_POINTER_ERROR_ROLE)) {
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return;
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}
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}
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struct wlr_seat_pointer_request_set_cursor_event event = {
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.seat_client = seat_client,
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.surface = surface,
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.serial = serial,
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.hotspot_x = hotspot_x,
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.hotspot_y = hotspot_y,
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};
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wlr_signal_emit_safe(&seat_client->seat->events.request_set_cursor, &event);
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}
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static void pointer_release(struct wl_client *client,
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struct wl_resource *resource) {
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wl_resource_destroy(resource);
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}
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static const struct wl_pointer_interface pointer_impl = {
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.set_cursor = pointer_set_cursor,
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.release = pointer_release,
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};
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static void pointer_handle_resource_destroy(struct wl_resource *resource) {
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wl_list_remove(wl_resource_get_link(resource));
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seat_client_destroy_pointer(resource);
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}
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bool wlr_seat_pointer_surface_has_focus(struct wlr_seat *wlr_seat,
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struct wlr_surface *surface) {
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return surface == wlr_seat->pointer_state.focused_surface;
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}
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static void seat_pointer_handle_surface_destroy(struct wl_listener *listener,
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void *data) {
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struct wlr_seat_pointer_state *state =
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wl_container_of(listener, state, surface_destroy);
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wl_list_remove(&state->surface_destroy.link);
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wl_list_init(&state->surface_destroy.link);
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wlr_seat_pointer_clear_focus(state->seat);
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}
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void wlr_seat_pointer_enter(struct wlr_seat *wlr_seat,
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struct wlr_surface *surface, double sx, double sy) {
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if (wlr_seat->pointer_state.focused_surface == surface) {
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// this surface already got an enter notify
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return;
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}
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struct wlr_seat_client *client = NULL;
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if (surface) {
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struct wl_client *wl_client = wl_resource_get_client(surface->resource);
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client = wlr_seat_client_for_wl_client(wlr_seat, wl_client);
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}
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struct wlr_seat_client *focused_client =
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wlr_seat->pointer_state.focused_client;
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struct wlr_surface *focused_surface =
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wlr_seat->pointer_state.focused_surface;
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// leave the previously entered surface
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if (focused_client != NULL && focused_surface != NULL) {
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uint32_t serial = wlr_seat_client_next_serial(focused_client);
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struct wl_resource *resource;
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wl_resource_for_each(resource, &focused_client->pointers) {
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if (wlr_seat_client_from_pointer_resource(resource) == NULL) {
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continue;
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}
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wl_pointer_send_leave(resource, serial, focused_surface->resource);
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pointer_send_frame(resource);
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}
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}
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// enter the current surface
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if (client != NULL && surface != NULL) {
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uint32_t serial = wlr_seat_client_next_serial(client);
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struct wl_resource *resource;
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wl_resource_for_each(resource, &client->pointers) {
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if (wlr_seat_client_from_pointer_resource(resource) == NULL) {
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continue;
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}
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wl_pointer_send_enter(resource, serial, surface->resource,
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wl_fixed_from_double(sx), wl_fixed_from_double(sy));
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pointer_send_frame(resource);
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}
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}
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// reinitialize the focus destroy events
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wl_list_remove(&wlr_seat->pointer_state.surface_destroy.link);
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wl_list_init(&wlr_seat->pointer_state.surface_destroy.link);
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if (surface != NULL) {
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wl_signal_add(&surface->events.destroy,
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&wlr_seat->pointer_state.surface_destroy);
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wlr_seat->pointer_state.surface_destroy.notify =
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seat_pointer_handle_surface_destroy;
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}
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wlr_seat->pointer_state.focused_client = client;
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wlr_seat->pointer_state.focused_surface = surface;
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if (surface != NULL) {
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wlr_seat->pointer_state.sx = sx;
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wlr_seat->pointer_state.sy = sy;
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} else {
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wlr_seat->pointer_state.sx = NAN;
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wlr_seat->pointer_state.sy = NAN;
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}
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struct wlr_seat_pointer_focus_change_event event = {
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.seat = wlr_seat,
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.new_surface = surface,
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.old_surface = focused_surface,
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.sx = sx,
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.sy = sy,
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};
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wlr_signal_emit_safe(&wlr_seat->pointer_state.events.focus_change, &event);
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}
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void wlr_seat_pointer_clear_focus(struct wlr_seat *wlr_seat) {
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wlr_seat_pointer_enter(wlr_seat, NULL, 0, 0);
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}
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void wlr_seat_pointer_send_motion(struct wlr_seat *wlr_seat, uint32_t time,
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double sx, double sy) {
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struct wlr_seat_client *client = wlr_seat->pointer_state.focused_client;
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if (client == NULL) {
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return;
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}
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if (wlr_seat->pointer_state.sx == sx && wlr_seat->pointer_state.sy == sy) {
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return;
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}
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struct wl_resource *resource;
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wl_resource_for_each(resource, &client->pointers) {
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if (wlr_seat_client_from_pointer_resource(resource) == NULL) {
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continue;
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}
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wl_pointer_send_motion(resource, time, wl_fixed_from_double(sx),
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wl_fixed_from_double(sy));
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}
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wlr_seat->pointer_state.sx = sx;
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wlr_seat->pointer_state.sy = sy;
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}
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uint32_t wlr_seat_pointer_send_button(struct wlr_seat *wlr_seat, uint32_t time,
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uint32_t button, enum wlr_button_state state) {
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struct wlr_seat_client *client = wlr_seat->pointer_state.focused_client;
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if (client == NULL) {
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return 0;
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}
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uint32_t serial = wlr_seat_client_next_serial(client);
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struct wl_resource *resource;
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wl_resource_for_each(resource, &client->pointers) {
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if (wlr_seat_client_from_pointer_resource(resource) == NULL) {
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continue;
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}
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wl_pointer_send_button(resource, serial, time, button, state);
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}
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return serial;
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}
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void wlr_seat_pointer_send_axis(struct wlr_seat *wlr_seat, uint32_t time,
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enum wlr_axis_orientation orientation, double value,
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int32_t value_discrete, enum wlr_axis_source source) {
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struct wlr_seat_client *client = wlr_seat->pointer_state.focused_client;
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if (client == NULL) {
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return;
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}
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struct wl_resource *resource;
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wl_resource_for_each(resource, &client->pointers) {
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if (wlr_seat_client_from_pointer_resource(resource) == NULL) {
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continue;
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}
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uint32_t version = wl_resource_get_version(resource);
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if (version >= WL_POINTER_AXIS_SOURCE_SINCE_VERSION) {
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wl_pointer_send_axis_source(resource, source);
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}
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if (value) {
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if (value_discrete &&
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version >= WL_POINTER_AXIS_DISCRETE_SINCE_VERSION) {
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wl_pointer_send_axis_discrete(resource, orientation,
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value_discrete);
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}
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wl_pointer_send_axis(resource, time, orientation,
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wl_fixed_from_double(value));
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} else if (version >= WL_POINTER_AXIS_STOP_SINCE_VERSION) {
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wl_pointer_send_axis_stop(resource, time, orientation);
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}
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}
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}
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void wlr_seat_pointer_send_frame(struct wlr_seat *wlr_seat) {
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struct wlr_seat_client *client = wlr_seat->pointer_state.focused_client;
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if (client == NULL) {
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return;
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}
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struct wl_resource *resource;
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wl_resource_for_each(resource, &client->pointers) {
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if (wlr_seat_client_from_pointer_resource(resource) == NULL) {
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continue;
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}
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pointer_send_frame(resource);
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}
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}
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void wlr_seat_pointer_start_grab(struct wlr_seat *wlr_seat,
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struct wlr_seat_pointer_grab *grab) {
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assert(wlr_seat);
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grab->seat = wlr_seat;
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wlr_seat->pointer_state.grab = grab;
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wlr_signal_emit_safe(&wlr_seat->events.pointer_grab_begin, grab);
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}
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void wlr_seat_pointer_end_grab(struct wlr_seat *wlr_seat) {
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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if (grab != wlr_seat->pointer_state.default_grab) {
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wlr_seat->pointer_state.grab = wlr_seat->pointer_state.default_grab;
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wlr_signal_emit_safe(&wlr_seat->events.pointer_grab_end, grab);
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if (grab->interface->cancel) {
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grab->interface->cancel(grab);
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}
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}
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}
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void wlr_seat_pointer_notify_enter(struct wlr_seat *wlr_seat,
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struct wlr_surface *surface, double sx, double sy) {
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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grab->interface->enter(grab, surface, sx, sy);
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}
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void wlr_seat_pointer_notify_motion(struct wlr_seat *wlr_seat, uint32_t time,
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double sx, double sy) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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grab->interface->motion(grab, time, sx, sy);
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}
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uint32_t wlr_seat_pointer_notify_button(struct wlr_seat *wlr_seat,
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uint32_t time, uint32_t button, enum wlr_button_state state) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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struct wlr_seat_pointer_state* pointer_state = &wlr_seat->pointer_state;
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if (state == WLR_BUTTON_PRESSED) {
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if (pointer_state->button_count == 0) {
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pointer_state->grab_button = button;
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pointer_state->grab_time = time;
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}
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set_add(pointer_state->buttons, &pointer_state->button_count,
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WLR_POINTER_BUTTONS_CAP, button);
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} else {
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set_remove(pointer_state->buttons, &pointer_state->button_count,
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WLR_POINTER_BUTTONS_CAP, button);
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}
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struct wlr_seat_pointer_grab *grab = pointer_state->grab;
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uint32_t serial = grab->interface->button(grab, time, button, state);
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wlr_log(WLR_DEBUG, "button_count=%zu grab_serial=%"PRIu32" serial=%"PRIu32"",
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pointer_state->button_count,
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pointer_state->grab_serial, serial);
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if (serial && pointer_state->button_count == 1 &&
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state == WLR_BUTTON_PRESSED) {
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pointer_state->grab_serial = serial;
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}
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return serial;
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}
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void wlr_seat_pointer_notify_axis(struct wlr_seat *wlr_seat, uint32_t time,
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enum wlr_axis_orientation orientation, double value,
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int32_t value_discrete, enum wlr_axis_source source) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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grab->interface->axis(grab, time, orientation, value, value_discrete,
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source);
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}
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void wlr_seat_pointer_notify_frame(struct wlr_seat *wlr_seat) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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if (grab->interface->frame) {
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grab->interface->frame(grab);
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}
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}
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bool wlr_seat_pointer_has_grab(struct wlr_seat *seat) {
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return seat->pointer_state.grab->interface != &default_pointer_grab_impl;
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}
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void seat_client_create_pointer(struct wlr_seat_client *seat_client,
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uint32_t version, uint32_t id) {
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struct wl_resource *resource = wl_resource_create(seat_client->client,
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&wl_pointer_interface, version, id);
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if (resource == NULL) {
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wl_client_post_no_memory(seat_client->client);
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return;
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}
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wl_resource_set_implementation(resource, &pointer_impl, seat_client,
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&pointer_handle_resource_destroy);
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wl_list_insert(&seat_client->pointers, wl_resource_get_link(resource));
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}
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void seat_client_destroy_pointer(struct wl_resource *resource) {
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struct wlr_seat_client *seat_client =
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wlr_seat_client_from_pointer_resource(resource);
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if (seat_client == NULL) {
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return;
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}
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wl_resource_set_user_data(resource, NULL);
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}
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bool wlr_seat_validate_pointer_grab_serial(struct wlr_seat *seat,
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struct wlr_surface *origin, uint32_t serial) {
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if (seat->pointer_state.button_count != 1 ||
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seat->pointer_state.grab_serial != serial) {
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wlr_log(WLR_DEBUG, "Pointer grab serial validation failed: "
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"button_count=%zu grab_serial=%"PRIu32" (got %"PRIu32")",
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seat->pointer_state.button_count,
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seat->pointer_state.grab_serial, serial);
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return false;
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}
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if (origin != NULL && seat->pointer_state.focused_surface != origin) {
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wlr_log(WLR_DEBUG, "Pointer grab serial validation failed: "
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"invalid origin surface");
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return false;
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}
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return true;
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}
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