388 lines
11 KiB
C
388 lines
11 KiB
C
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#include <assert.h>
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#include <stdint.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 <unistd.h>
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#include <wayland-client.h>
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#include <wlr/interfaces/wlr_keyboard.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/interfaces/wlr_touch.h>
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#include <wlr/interfaces/wlr_tablet_tool.h>
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#include <wlr/interfaces/wlr_tablet_pad.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 "backend/wayland.h"
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#include "util/time.h"
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static void keyboard_handle_keymap(void *data, struct wl_keyboard *wl_keyboard,
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uint32_t format, int32_t fd, uint32_t size) {
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close(fd);
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}
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static void keyboard_handle_enter(void *data, struct wl_keyboard *wl_keyboard,
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uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
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struct wlr_keyboard *keyboard = data;
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uint32_t *keycode_ptr;
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wl_array_for_each(keycode_ptr, keys) {
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struct wlr_keyboard_key_event event = {
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.keycode = *keycode_ptr,
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.state = WL_KEYBOARD_KEY_STATE_PRESSED,
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.time_msec = get_current_time_msec(),
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.update_state = false,
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};
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wlr_keyboard_notify_key(keyboard, &event);
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}
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}
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static void keyboard_handle_leave(void *data, struct wl_keyboard *wl_keyboard,
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uint32_t serial, struct wl_surface *surface) {
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struct wlr_keyboard *keyboard = data;
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size_t num_keycodes = keyboard->num_keycodes;
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uint32_t pressed[num_keycodes + 1];
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memcpy(pressed, keyboard->keycodes,
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num_keycodes * sizeof(uint32_t));
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for (size_t i = 0; i < num_keycodes; ++i) {
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uint32_t keycode = pressed[i];
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struct wlr_keyboard_key_event event = {
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.keycode = keycode,
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.state = WL_KEYBOARD_KEY_STATE_RELEASED,
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.time_msec = get_current_time_msec(),
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.update_state = false,
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};
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wlr_keyboard_notify_key(keyboard, &event);
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}
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}
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static void keyboard_handle_key(void *data, struct wl_keyboard *wl_keyboard,
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uint32_t serial, uint32_t time, uint32_t key, uint32_t state) {
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struct wlr_keyboard *keyboard = data;
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struct wlr_keyboard_key_event wlr_event = {
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.keycode = key,
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.state = state,
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.time_msec = time,
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.update_state = false,
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};
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wlr_keyboard_notify_key(keyboard, &wlr_event);
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}
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static void keyboard_handle_modifiers(void *data, struct wl_keyboard *wl_keyboard,
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uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
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uint32_t mods_locked, uint32_t group) {
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struct wlr_keyboard *keyboard = data;
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wlr_keyboard_notify_modifiers(keyboard, mods_depressed, mods_latched,
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mods_locked, group);
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}
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static void keyboard_handle_repeat_info(void *data,
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struct wl_keyboard *wl_keyboard, int32_t rate, int32_t delay) {
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// This space is intentionally left blank
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}
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static const struct wl_keyboard_listener keyboard_listener = {
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.keymap = keyboard_handle_keymap,
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.enter = keyboard_handle_enter,
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.leave = keyboard_handle_leave,
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.key = keyboard_handle_key,
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.modifiers = keyboard_handle_modifiers,
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.repeat_info = keyboard_handle_repeat_info
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};
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static const struct wlr_keyboard_impl keyboard_impl = {
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.name = "wl-keyboard",
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};
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void init_seat_keyboard(struct wlr_wl_seat *seat) {
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assert(seat->wl_keyboard);
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char name[128] = {0};
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snprintf(name, sizeof(name), "wayland-keyboard-%s", seat->name);
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wlr_keyboard_init(&seat->wlr_keyboard, &keyboard_impl, name);
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wl_keyboard_add_listener(seat->wl_keyboard, &keyboard_listener,
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&seat->wlr_keyboard);
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wl_signal_emit_mutable(&seat->backend->backend.events.new_input,
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&seat->wlr_keyboard.base);
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}
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static void touch_coordinates_to_absolute(struct wlr_wl_seat *seat,
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wl_fixed_t x, wl_fixed_t y, double *sx, double *sy) {
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/**
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* TODO: multi-output touch support
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* Although the wayland backend supports multi-output pointers, the support
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* for multi-output touch has been left on the side for simplicity reasons.
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* If this is a feature you want/need, please open an issue on the wlroots
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* tracker here https://gitlab.freedesktop.org/wlroots/wlroots/-/issues
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*/
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struct wlr_wl_output *output, *tmp;
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wl_list_for_each_safe(output, tmp, &seat->backend->outputs, link) {
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*sx = wl_fixed_to_double(x) / output->wlr_output.width;
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*sy = wl_fixed_to_double(y) / output->wlr_output.height;
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return; // Choose the first output in the list
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}
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*sx = *sy = 0;
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}
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static void touch_handle_down(void *data, struct wl_touch *wl_touch,
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uint32_t serial, uint32_t time, struct wl_surface *surface,
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int32_t id, wl_fixed_t x, wl_fixed_t y) {
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struct wlr_wl_seat *seat = data;
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struct wlr_touch *touch = &seat->wlr_touch;
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struct wlr_wl_touch_points *points = &seat->touch_points;
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assert(points->len != sizeof(points->ids) / sizeof(points->ids[0]));
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points->ids[points->len++] = id;
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struct wlr_touch_down_event event = {
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.touch = touch,
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.time_msec = time,
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.touch_id = id,
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};
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touch_coordinates_to_absolute(seat, x, y, &event.x, &event.y);
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wl_signal_emit_mutable(&touch->events.down, &event);
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}
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static bool remove_touch_point(struct wlr_wl_touch_points *points, int32_t id) {
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size_t i = 0;
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for (; i < points->len; i++) {
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if (points->ids[i] == id) {
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size_t remaining = points->len - i - 1;
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memmove(&points->ids[i], &points->ids[i + 1], remaining * sizeof(id));
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points->len--;
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return true;
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}
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}
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return false;
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}
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static void touch_handle_up(void *data, struct wl_touch *wl_touch,
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uint32_t serial, uint32_t time, int32_t id) {
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struct wlr_wl_seat *seat = data;
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struct wlr_touch *touch = &seat->wlr_touch;
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remove_touch_point(&seat->touch_points, id);
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struct wlr_touch_up_event event = {
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.touch = touch,
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.time_msec = time,
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.touch_id = id,
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};
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wl_signal_emit_mutable(&touch->events.up, &event);
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}
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static void touch_handle_motion(void *data, struct wl_touch *wl_touch,
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uint32_t time, int32_t id, wl_fixed_t x, wl_fixed_t y) {
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struct wlr_wl_seat *seat = data;
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struct wlr_touch *touch = &seat->wlr_touch;
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struct wlr_touch_motion_event event = {
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.touch = touch,
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.time_msec = time,
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.touch_id = id,
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};
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touch_coordinates_to_absolute(seat, x, y, &event.x, &event.y);
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wl_signal_emit_mutable(&touch->events.motion, &event);
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}
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static void touch_handle_frame(void *data, struct wl_touch *wl_touch) {
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struct wlr_wl_seat *seat = data;
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wl_signal_emit_mutable(&seat->wlr_touch.events.frame, NULL);
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}
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static void touch_handle_cancel(void *data, struct wl_touch *wl_touch) {
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struct wlr_wl_seat *seat = data;
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struct wlr_touch *touch = &seat->wlr_touch;
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// wayland's cancel event applies to all active touch points
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for (size_t i = 0; i < seat->touch_points.len; i++) {
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struct wlr_touch_cancel_event event = {
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.touch = touch,
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.time_msec = 0,
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.touch_id = seat->touch_points.ids[i],
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};
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wl_signal_emit_mutable(&touch->events.cancel, &event);
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}
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seat->touch_points.len = 0;
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}
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static void touch_handle_shape(void *data, struct wl_touch *wl_touch,
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int32_t id, wl_fixed_t major, wl_fixed_t minor) {
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// no-op
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}
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static void touch_handle_orientation(void *data, struct wl_touch *wl_touch,
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int32_t id, wl_fixed_t orientation) {
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// no-op
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}
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static const struct wl_touch_listener touch_listener = {
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.down = touch_handle_down,
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.up = touch_handle_up,
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.motion = touch_handle_motion,
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.frame = touch_handle_frame,
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.cancel = touch_handle_cancel,
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.shape = touch_handle_shape,
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.orientation = touch_handle_orientation,
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};
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static const struct wlr_touch_impl touch_impl = {
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.name = "wl-touch",
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};
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void init_seat_touch(struct wlr_wl_seat *seat) {
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assert(seat->wl_touch);
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char name[128] = {0};
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snprintf(name, sizeof(name), "wayland-touch-%s", seat->name);
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wlr_touch_init(&seat->wlr_touch, &touch_impl, name);
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struct wlr_wl_output *output;
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wl_list_for_each(output, &seat->backend->outputs, link) {
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/* Multi-output touch not supproted */
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seat->wlr_touch.output_name = strdup(output->wlr_output.name);
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break;
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}
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wl_touch_add_listener(seat->wl_touch, &touch_listener, seat);
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wl_signal_emit_mutable(&seat->backend->backend.events.new_input,
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&seat->wlr_touch.base);
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}
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static const struct wl_seat_listener seat_listener;
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bool create_wl_seat(struct wl_seat *wl_seat, struct wlr_wl_backend *wl,
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uint32_t global_name) {
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struct wlr_wl_seat *seat = calloc(1, sizeof(*seat));
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if (!seat) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return false;
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}
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seat->wl_seat = wl_seat;
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seat->backend = wl;
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seat->global_name = global_name;
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wl_list_insert(&wl->seats, &seat->link);
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wl_seat_add_listener(wl_seat, &seat_listener, seat);
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return true;
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}
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void destroy_wl_seat(struct wlr_wl_seat *seat) {
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if (seat->wl_touch) {
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wl_touch_release(seat->wl_touch);
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wlr_touch_finish(&seat->wlr_touch);
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}
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if (seat->wl_pointer) {
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finish_seat_pointer(seat);
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}
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if (seat->wl_keyboard) {
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wl_keyboard_release(seat->wl_keyboard);
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if (seat->backend->started) {
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wlr_keyboard_finish(&seat->wlr_keyboard);
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}
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}
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if (seat->zwp_tablet_seat_v2) {
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finish_seat_tablet(seat);
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}
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free(seat->name);
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assert(seat->wl_seat);
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wl_seat_destroy(seat->wl_seat);
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wl_list_remove(&seat->link);
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free(seat);
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}
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bool wlr_input_device_is_wl(struct wlr_input_device *dev) {
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switch (dev->type) {
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case WLR_INPUT_DEVICE_KEYBOARD:
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return wlr_keyboard_from_input_device(dev)->impl == &keyboard_impl;
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case WLR_INPUT_DEVICE_POINTER:
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return wlr_pointer_from_input_device(dev)->impl == &wl_pointer_impl;
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case WLR_INPUT_DEVICE_TOUCH:
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return wlr_touch_from_input_device(dev)->impl == &touch_impl;
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case WLR_INPUT_DEVICE_TABLET:
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return wlr_tablet_from_input_device(dev)-> impl == &wl_tablet_impl;
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case WLR_INPUT_DEVICE_TABLET_PAD:
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return wlr_tablet_pad_from_input_device(dev)->impl == &wl_tablet_pad_impl;
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default:
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return false;
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}
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}
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static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
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enum wl_seat_capability caps) {
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struct wlr_wl_seat *seat = data;
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struct wlr_wl_backend *backend = seat->backend;
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if ((caps & WL_SEAT_CAPABILITY_POINTER) && seat->wl_pointer == NULL) {
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wlr_log(WLR_DEBUG, "seat '%s' offering pointer", seat->name);
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seat->wl_pointer = wl_seat_get_pointer(wl_seat);
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init_seat_pointer(seat);
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}
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if (!(caps & WL_SEAT_CAPABILITY_POINTER) && seat->wl_pointer != NULL) {
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wlr_log(WLR_DEBUG, "seat '%s' dropping pointer", seat->name);
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finish_seat_pointer(seat);
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}
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if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && seat->wl_keyboard == NULL) {
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wlr_log(WLR_DEBUG, "seat '%s' offering keyboard", seat->name);
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struct wl_keyboard *wl_keyboard = wl_seat_get_keyboard(wl_seat);
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seat->wl_keyboard = wl_keyboard;
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if (backend->started) {
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init_seat_keyboard(seat);
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}
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}
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if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && seat->wl_keyboard != NULL) {
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wlr_log(WLR_DEBUG, "seat '%s' dropping keyboard", seat->name);
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wl_keyboard_release(seat->wl_keyboard);
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wlr_keyboard_finish(&seat->wlr_keyboard);
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seat->wl_keyboard = NULL;
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}
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if ((caps & WL_SEAT_CAPABILITY_TOUCH) && seat->wl_touch == NULL) {
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wlr_log(WLR_DEBUG, "seat '%s' offering touch", seat->name);
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seat->wl_touch = wl_seat_get_touch(wl_seat);
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if (backend->started) {
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init_seat_touch(seat);
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}
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}
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if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && seat->wl_touch != NULL) {
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wlr_log(WLR_DEBUG, "seat '%s' dropping touch", seat->name);
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wl_touch_release(seat->wl_touch);
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wlr_touch_finish(&seat->wlr_touch);
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seat->wl_touch = NULL;
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}
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}
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static void seat_handle_name(void *data, struct wl_seat *wl_seat,
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const char *name) {
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struct wlr_wl_seat *seat = data;
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free(seat->name);
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seat->name = strdup(name);
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}
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static const struct wl_seat_listener seat_listener = {
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.capabilities = seat_handle_capabilities,
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.name = seat_handle_name,
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};
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