mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-11-02 20:05:58 +01:00
7cdc19d57f
In pointer.c, some axis event was emitted even if the event pointer did not have current axis. In X11 backend pointer scroll events seem to be composed of both BUTTON_PRESS and BUTTON_RELEASE. Therefore we should skip one of them (RELEASE) to avoid event duplication.
366 lines
11 KiB
C
366 lines
11 KiB
C
#define _POSIX_C_SOURCE 200112L
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <EGL/egl.h>
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#include <wayland-server.h>
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#include <xcb/xcb.h>
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#include <xcb/glx.h>
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#include <X11/Xlib-xcb.h>
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#ifdef __linux__
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#include <linux/input-event-codes.h>
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#elif __FreeBSD__
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#include <dev/evdev/input-event-codes.h>
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#endif
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#include <wlr/backend/interface.h>
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#include <wlr/backend/x11.h>
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#include <wlr/egl.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/interfaces/wlr_input_device.h>
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#include <wlr/interfaces/wlr_keyboard.h>
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#include <wlr/interfaces/wlr_pointer.h>
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#include <wlr/util/log.h>
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#include "backend/x11.h"
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static struct wlr_backend_impl backend_impl;
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static struct wlr_output_impl output_impl;
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static uint32_t xcb_button_to_wl(uint32_t button) {
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switch (button) {
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case XCB_BUTTON_INDEX_1: return BTN_LEFT;
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case XCB_BUTTON_INDEX_2: return BTN_MIDDLE;
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case XCB_BUTTON_INDEX_3: return BTN_RIGHT;
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// XXX: I'm not sure the scroll-wheel direction is right
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case XCB_BUTTON_INDEX_4: return BTN_GEAR_UP;
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case XCB_BUTTON_INDEX_5: return BTN_GEAR_DOWN;
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default: return 0;
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}
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}
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static bool handle_x11_event(struct wlr_x11_backend *x11, xcb_generic_event_t *event) {
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struct wlr_x11_output *output = &x11->output;
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switch (event->response_type) {
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case XCB_EXPOSE: {
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wl_signal_emit(&output->wlr_output.events.frame, output);
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break;
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}
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case XCB_KEY_PRESS:
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case XCB_KEY_RELEASE: {
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xcb_key_press_event_t *ev = (xcb_key_press_event_t *)event;
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struct wlr_event_keyboard_key key = {
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.time_sec = ev->time / 1000,
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.time_usec = ev->time * 1000,
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.keycode = ev->detail - 8,
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.state = event->response_type == XCB_KEY_PRESS ?
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WLR_KEY_PRESSED : WLR_KEY_RELEASED,
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.update_state = true,
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};
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// TODO use xcb-xkb for more precise modifiers state?
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wlr_keyboard_notify_key(&x11->keyboard, &key);
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x11->time = ev->time;
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break;
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}
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case XCB_BUTTON_PRESS: {
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xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
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if (ev->detail == XCB_BUTTON_INDEX_4 ||
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ev->detail == XCB_BUTTON_INDEX_5) {
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double delta = (ev->detail == XCB_BUTTON_INDEX_4 ? -15 : 15);
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struct wlr_event_pointer_axis axis = {
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.device = &x11->pointer_dev,
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.time_sec = ev->time / 1000,
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.time_usec = ev->time * 1000,
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.source = WLR_AXIS_SOURCE_WHEEL,
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.orientation = WLR_AXIS_ORIENTATION_VERTICAL,
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.delta = delta,
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};
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wl_signal_emit(&x11->pointer.events.axis, &axis);
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x11->time = ev->time;
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break;
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}
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}
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/* fallthrough */
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case XCB_BUTTON_RELEASE: {
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xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
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if (ev->detail != XCB_BUTTON_INDEX_4 &&
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ev->detail != XCB_BUTTON_INDEX_5) {
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struct wlr_event_pointer_button button = {
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.device = &x11->pointer_dev,
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.time_sec = ev->time / 1000,
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.time_usec = ev->time * 1000,
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.button = xcb_button_to_wl(ev->detail),
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.state = event->response_type == XCB_BUTTON_PRESS ?
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WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED,
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};
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wl_signal_emit(&x11->pointer.events.button, &button);
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}
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x11->time = ev->time;
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break;
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}
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case XCB_MOTION_NOTIFY: {
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xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
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struct wlr_event_pointer_motion_absolute abs = {
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.device = &x11->pointer_dev,
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.time_sec = ev->time / 1000,
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.time_usec = ev->time * 1000,
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.x_mm = ev->event_x,
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.y_mm = ev->event_y,
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.width_mm = output->wlr_output.width,
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.height_mm = output->wlr_output.height,
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};
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wl_signal_emit(&x11->pointer.events.motion_absolute, &abs);
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x11->time = ev->time;
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break;
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}
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case XCB_CONFIGURE_NOTIFY: {
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xcb_configure_notify_event_t *ev = (xcb_configure_notify_event_t *)event;
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output->wlr_output.width = ev->width;
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output->wlr_output.height = ev->height;
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wlr_output_update_matrix(&output->wlr_output);
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wl_signal_emit(&output->wlr_output.events.resolution, output);
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// Move the pointer to its new location
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xcb_query_pointer_cookie_t cookie =
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xcb_query_pointer(x11->xcb_conn, output->win);
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xcb_query_pointer_reply_t *pointer =
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xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
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if (!pointer) {
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break;
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}
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struct wlr_event_pointer_motion_absolute abs = {
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.device = &x11->pointer_dev,
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.time_sec = x11->time / 1000,
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.time_usec = x11->time * 1000,
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.x_mm = pointer->root_x,
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.y_mm = pointer->root_y,
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.width_mm = output->wlr_output.width,
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.height_mm = output->wlr_output.height,
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};
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wl_signal_emit(&x11->pointer.events.motion_absolute, &abs);
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break;
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}
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case XCB_GLX_DELETE_QUERIES_ARB: {
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wl_display_terminate(x11->wl_display);
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return true;
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break;
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}
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default:
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break;
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}
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return false;
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}
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static int x11_event(int fd, uint32_t mask, void *data) {
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struct wlr_x11_backend *x11 = data;
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xcb_generic_event_t *e;
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bool quit = false;
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while (!quit && (e = xcb_poll_for_event(x11->xcb_conn))) {
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quit = handle_x11_event(x11, e);
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free(e);
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}
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return 0;
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}
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static int signal_frame(void *data) {
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struct wlr_x11_backend *x11 = data;
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wl_signal_emit(&x11->output.wlr_output.events.frame, &x11->output);
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wl_event_source_timer_update(x11->frame_timer, 16);
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return 0;
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}
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static void init_atom(struct wlr_x11_backend *x11, struct wlr_x11_atom *atom,
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uint8_t only_if_exists, const char *name) {
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atom->cookie = xcb_intern_atom(x11->xcb_conn, only_if_exists, strlen(name), name);
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atom->reply = xcb_intern_atom_reply(x11->xcb_conn, atom->cookie, NULL);
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}
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struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
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const char *x11_display) {
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struct wlr_x11_backend *x11 = calloc(1, sizeof(*x11));
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if (!x11) {
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return NULL;
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}
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wlr_backend_init(&x11->backend, &backend_impl);
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x11->wl_display = display;
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x11->xlib_conn = XOpenDisplay(x11_display);
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if (!x11->xlib_conn) {
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wlr_log(L_ERROR, "Failed to open X connection");
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return NULL;
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}
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x11->xcb_conn = XGetXCBConnection(x11->xlib_conn);
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if (!x11->xcb_conn || xcb_connection_has_error(x11->xcb_conn)) {
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wlr_log(L_ERROR, "Failed to open xcb connection");
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goto error_x11;
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}
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XSetEventQueueOwner(x11->xlib_conn, XCBOwnsEventQueue);
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int fd = xcb_get_file_descriptor(x11->xcb_conn);
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struct wl_event_loop *ev = wl_display_get_event_loop(display);
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x11->event_source = wl_event_loop_add_fd(ev, fd, WL_EVENT_READABLE, x11_event, x11);
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if (!x11->event_source) {
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wlr_log(L_ERROR, "Could not create event source");
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goto error_x11;
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}
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x11->frame_timer = wl_event_loop_add_timer(ev, signal_frame, x11);
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x11->screen = xcb_setup_roots_iterator(xcb_get_setup(x11->xcb_conn)).data;
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if (!wlr_egl_init(&x11->egl, EGL_PLATFORM_X11_KHR,
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x11->screen->root_visual, x11->xlib_conn)) {
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goto error_event;
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}
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wlr_input_device_init(&x11->keyboard_dev, WLR_INPUT_DEVICE_KEYBOARD,
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NULL, "X11 keyboard", 0, 0);
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wlr_keyboard_init(&x11->keyboard, NULL);
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x11->keyboard_dev.keyboard = &x11->keyboard;
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wlr_input_device_init(&x11->pointer_dev, WLR_INPUT_DEVICE_POINTER,
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NULL, "X11 pointer", 0, 0);
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wlr_pointer_init(&x11->pointer, NULL);
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x11->pointer_dev.pointer = &x11->pointer;
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return &x11->backend;
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error_event:
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wl_event_source_remove(x11->event_source);
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error_x11:
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xcb_disconnect(x11->xcb_conn);
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XCloseDisplay(x11->xlib_conn);
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free(x11);
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return NULL;
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}
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static bool wlr_x11_backend_start(struct wlr_backend *backend) {
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struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
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struct wlr_x11_output *output = &x11->output;
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uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
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uint32_t values[2] = {
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x11->screen->white_pixel,
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XCB_EVENT_MASK_EXPOSURE |
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XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
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XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
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XCB_EVENT_MASK_POINTER_MOTION |
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XCB_EVENT_MASK_STRUCTURE_NOTIFY
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};
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output->x11 = x11;
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wlr_output_init(&output->wlr_output, &output_impl);
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snprintf(output->wlr_output.name, sizeof(output->wlr_output.name), "X11-1");
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output->win = xcb_generate_id(x11->xcb_conn);
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xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win, x11->screen->root,
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0, 0, 1024, 768, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT,
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x11->screen->root_visual, mask, values);
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output->surf = wlr_egl_create_surface(&x11->egl, &output->win);
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if (!output->surf) {
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wlr_log(L_ERROR, "Failed to create EGL surface");
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return false;
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}
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init_atom(x11, &x11->atoms.wm_protocols, 1, "WM_PROTOCOLS");
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init_atom(x11, &x11->atoms.wm_delete_window, 0, "WM_DELETE_WINDOW");
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xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
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x11->atoms.wm_protocols.reply->atom, XCB_ATOM_ATOM, 32, 1,
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&x11->atoms.wm_delete_window.reply->atom);
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xcb_map_window(x11->xcb_conn, output->win);
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xcb_flush(x11->xcb_conn);
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wlr_output_create_global(&output->wlr_output, x11->wl_display);
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wl_signal_emit(&x11->backend.events.output_add, output);
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wl_signal_emit(&x11->backend.events.input_add, &x11->keyboard_dev);
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wl_signal_emit(&x11->backend.events.input_add, &x11->pointer_dev);
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wl_event_source_timer_update(x11->frame_timer, 16);
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return true;
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}
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static void wlr_x11_backend_destroy(struct wlr_backend *backend) {
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if (!backend) {
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return;
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}
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struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
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wl_event_source_remove(x11->frame_timer);
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wlr_egl_free(&x11->egl);
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xcb_disconnect(x11->xcb_conn);
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free(x11);
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}
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static struct wlr_egl *wlr_x11_backend_get_egl(struct wlr_backend *backend) {
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struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
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return &x11->egl;
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}
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bool wlr_backend_is_x11(struct wlr_backend *backend) {
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return backend->impl == &backend_impl;
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}
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static struct wlr_backend_impl backend_impl = {
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.start = wlr_x11_backend_start,
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.destroy = wlr_x11_backend_destroy,
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.get_egl = wlr_x11_backend_get_egl,
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};
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static void output_transform(struct wlr_output *wlr_output, enum wl_output_transform transform) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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output->wlr_output.transform = transform;
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}
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static void output_destroy(struct wlr_output *wlr_output) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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eglDestroySurface(x11->egl.display, output->surf);
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xcb_destroy_window(x11->xcb_conn, output->win);
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}
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static void output_make_current(struct wlr_output *wlr_output) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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if (!eglMakeCurrent(x11->egl.display, output->surf, output->surf, x11->egl.context)) {
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wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
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}
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}
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static void output_swap_buffers(struct wlr_output *wlr_output) {
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struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
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struct wlr_x11_backend *x11 = output->x11;
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if (!eglSwapBuffers(x11->egl.display, output->surf)) {
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wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
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}
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}
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static struct wlr_output_impl output_impl = {
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.transform = output_transform,
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.destroy = output_destroy,
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.make_current = output_make_current,
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.swap_buffers = output_swap_buffers,
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};
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