wlroots/backend/x11/backend.c

483 lines
14 KiB
C
Raw Normal View History

2017-10-09 22:23:43 +00:00
#define _POSIX_C_SOURCE 200112L
2018-02-12 20:29:23 +00:00
#include <EGL/egl.h>
2017-09-22 02:58:41 +00:00
#include <stdbool.h>
2017-09-26 03:04:07 +00:00
#include <stdio.h>
2017-09-22 04:00:27 +00:00
#include <stdlib.h>
2017-09-29 03:31:04 +00:00
#include <time.h>
2017-09-26 03:04:07 +00:00
#include <wayland-server.h>
2017-09-22 02:58:41 +00:00
#include <wlr/backend/interface.h>
#include <wlr/backend/x11.h>
2017-09-27 03:39:44 +00:00
#include <wlr/interfaces/wlr_input_device.h>
#include <wlr/interfaces/wlr_keyboard.h>
2018-02-12 20:29:23 +00:00
#include <wlr/interfaces/wlr_output.h>
2017-09-27 03:39:44 +00:00
#include <wlr/interfaces/wlr_pointer.h>
2018-02-12 20:29:23 +00:00
#include <wlr/render/egl.h>
#include <wlr/render/gles2.h>
2017-09-22 04:00:27 +00:00
#include <wlr/util/log.h>
2018-02-12 20:29:23 +00:00
#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#ifdef __linux__
#include <linux/input-event-codes.h>
#elif __FreeBSD__
#include <dev/evdev/input-event-codes.h>
#endif
2017-09-22 02:58:41 +00:00
#include "backend/x11.h"
2018-02-12 20:29:23 +00:00
#include "util/signal.h"
2017-09-22 02:58:41 +00:00
2018-03-06 06:57:39 +00:00
#define XCB_EVENT_RESPONSE_TYPE_MASK 0x7f
2018-03-06 06:59:10 +00:00
static const struct wlr_backend_impl backend_impl;
static const struct wlr_output_impl output_impl;
static const struct wlr_input_device_impl input_device_impl = { 0 };
2017-09-22 04:00:27 +00:00
2017-09-28 10:48:54 +00:00
static uint32_t xcb_button_to_wl(uint32_t button) {
switch (button) {
case XCB_BUTTON_INDEX_1: return BTN_LEFT;
case XCB_BUTTON_INDEX_2: return BTN_MIDDLE;
case XCB_BUTTON_INDEX_3: return BTN_RIGHT;
// XXX: I'm not sure the scroll-wheel direction is right
case XCB_BUTTON_INDEX_4: return BTN_GEAR_UP;
case XCB_BUTTON_INDEX_5: return BTN_GEAR_DOWN;
default: return 0;
}
}
2017-09-28 10:16:35 +00:00
static bool handle_x11_event(struct wlr_x11_backend *x11, xcb_generic_event_t *event) {
2017-09-28 09:38:12 +00:00
struct wlr_x11_output *output = &x11->output;
2017-09-22 04:00:27 +00:00
2018-03-06 06:57:39 +00:00
switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
2017-09-28 10:48:54 +00:00
case XCB_EXPOSE: {
2018-01-26 21:39:23 +00:00
wlr_output_send_frame(&output->wlr_output);
2017-09-22 04:00:27 +00:00
break;
2017-09-27 03:39:44 +00:00
}
2017-09-28 10:48:54 +00:00
case XCB_KEY_PRESS:
2017-09-27 03:39:44 +00:00
case XCB_KEY_RELEASE: {
2017-09-28 10:48:54 +00:00
xcb_key_press_event_t *ev = (xcb_key_press_event_t *)event;
2017-09-27 03:39:44 +00:00
struct wlr_event_keyboard_key key = {
2017-10-30 10:40:06 +00:00
.time_msec = ev->time,
2017-09-28 10:48:54 +00:00
.keycode = ev->detail - 8,
.state = event->response_type == XCB_KEY_PRESS ?
WLR_KEY_PRESSED : WLR_KEY_RELEASED,
.update_state = true,
2017-09-27 03:39:44 +00:00
};
// TODO use xcb-xkb for more precise modifiers state?
wlr_keyboard_notify_key(&x11->keyboard, &key);
2017-09-29 03:31:04 +00:00
x11->time = ev->time;
2017-09-22 04:00:27 +00:00
break;
2017-09-27 03:39:44 +00:00
}
case XCB_BUTTON_PRESS: {
2017-09-28 10:48:54 +00:00
xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
2017-09-28 08:47:12 +00:00
2017-10-08 13:28:23 +00:00
if (ev->detail == XCB_BUTTON_INDEX_4 ||
ev->detail == XCB_BUTTON_INDEX_5) {
double delta = (ev->detail == XCB_BUTTON_INDEX_4 ? -15 : 15);
struct wlr_event_pointer_axis axis = {
.device = &x11->pointer_dev,
2017-10-30 10:40:06 +00:00
.time_msec = ev->time,
2017-10-08 13:28:23 +00:00
.source = WLR_AXIS_SOURCE_WHEEL,
.orientation = WLR_AXIS_ORIENTATION_VERTICAL,
.delta = delta,
};
2018-02-12 08:12:31 +00:00
wlr_signal_emit_safe(&x11->pointer.events.axis, &axis);
x11->time = ev->time;
break;
}
}
/* fallthrough */
case XCB_BUTTON_RELEASE: {
xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
if (ev->detail != XCB_BUTTON_INDEX_4 &&
ev->detail != XCB_BUTTON_INDEX_5) {
2017-10-08 13:28:23 +00:00
struct wlr_event_pointer_button button = {
.device = &x11->pointer_dev,
2017-10-30 10:40:06 +00:00
.time_msec = ev->time,
2017-10-08 13:28:23 +00:00
.button = xcb_button_to_wl(ev->detail),
.state = event->response_type == XCB_BUTTON_PRESS ?
WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED,
};
2018-02-12 08:12:31 +00:00
wlr_signal_emit_safe(&x11->pointer.events.button, &button);
2017-10-08 13:28:23 +00:00
}
2017-09-29 03:31:04 +00:00
x11->time = ev->time;
2017-09-28 08:47:12 +00:00
break;
}
2017-09-28 09:02:21 +00:00
case XCB_MOTION_NOTIFY: {
2017-09-28 10:48:54 +00:00
xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
2017-09-28 09:02:21 +00:00
struct wlr_event_pointer_motion_absolute abs = {
.device = &x11->pointer_dev,
2017-10-30 10:40:06 +00:00
.time_msec = ev->time,
2017-09-28 10:48:54 +00:00
.x_mm = ev->event_x,
.y_mm = ev->event_y,
2017-09-28 09:38:12 +00:00
.width_mm = output->wlr_output.width,
.height_mm = output->wlr_output.height,
2017-09-28 09:02:21 +00:00
};
2018-02-12 08:12:31 +00:00
wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &abs);
2017-09-29 03:31:04 +00:00
x11->time = ev->time;
2017-09-28 09:02:21 +00:00
break;
}
2017-09-28 09:38:12 +00:00
case XCB_CONFIGURE_NOTIFY: {
2017-09-28 10:48:54 +00:00
xcb_configure_notify_event_t *ev = (xcb_configure_notify_event_t *)event;
2017-09-28 09:38:12 +00:00
wlr_output_update_custom_mode(&output->wlr_output, ev->width,
ev->height, 0);
2017-09-28 09:38:12 +00:00
// Move the pointer to its new location
xcb_query_pointer_cookie_t cookie =
xcb_query_pointer(x11->xcb_conn, output->win);
xcb_query_pointer_reply_t *pointer =
xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
if (!pointer) {
break;
}
struct wlr_event_pointer_motion_absolute abs = {
.device = &x11->pointer_dev,
2017-10-30 10:40:06 +00:00
.time_msec = x11->time,
2017-09-28 09:38:12 +00:00
.x_mm = pointer->root_x,
.y_mm = pointer->root_y,
.width_mm = output->wlr_output.width,
.height_mm = output->wlr_output.height,
};
2018-02-12 08:12:31 +00:00
wlr_signal_emit_safe(&x11->pointer.events.motion_absolute, &abs);
2017-09-28 09:38:12 +00:00
break;
}
2018-03-06 06:57:39 +00:00
case XCB_CLIENT_MESSAGE: {
xcb_client_message_event_t *ev = (xcb_client_message_event_t *)event;
if (ev->data.data32[0] == x11->atoms.wm_delete_window) {
wl_display_terminate(x11->wl_display);
return true;
}
2017-09-28 09:38:12 +00:00
break;
2017-09-28 10:16:35 +00:00
}
2017-09-22 04:00:27 +00:00
default:
break;
}
2017-09-28 10:16:35 +00:00
return false;
2017-09-28 09:38:12 +00:00
}
2017-09-28 10:16:35 +00:00
static int x11_event(int fd, uint32_t mask, void *data) {
2017-09-28 09:38:12 +00:00
struct wlr_x11_backend *x11 = data;
if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
wl_display_terminate(x11->wl_display);
return 0;
}
2017-09-28 09:38:12 +00:00
xcb_generic_event_t *e;
2017-09-28 10:16:35 +00:00
bool quit = false;
while (!quit && (e = xcb_poll_for_event(x11->xcb_conn))) {
quit = handle_x11_event(x11, e);
2017-09-28 09:38:12 +00:00
free(e);
}
2017-09-22 04:00:27 +00:00
return 0;
}
2017-09-28 10:16:35 +00:00
static int signal_frame(void *data) {
2017-09-28 08:46:58 +00:00
struct wlr_x11_backend *x11 = data;
2018-01-26 21:39:23 +00:00
wlr_output_send_frame(&x11->output.wlr_output);
2017-09-28 08:46:58 +00:00
wl_event_source_timer_update(x11->frame_timer, 16);
return 0;
}
static void parse_xcb_setup(struct wlr_output *output, xcb_connection_t *xcb_conn) {
const xcb_setup_t *xcb_setup = xcb_get_setup(xcb_conn);
snprintf(output->make, sizeof(output->make), "%.*s",
xcb_setup_vendor_length(xcb_setup),
xcb_setup_vendor(xcb_setup));
snprintf(output->model, sizeof(output->model), "%"PRIu16".%"PRIu16,
xcb_setup->protocol_major_version,
xcb_setup->protocol_minor_version);
}
2017-09-22 02:58:41 +00:00
static bool wlr_x11_backend_start(struct wlr_backend *backend) {
2017-09-22 04:00:27 +00:00
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
2017-09-26 03:04:07 +00:00
struct wlr_x11_output *output = &x11->output;
2017-09-22 04:00:27 +00:00
uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
uint32_t values[2] = {
2017-09-26 02:16:25 +00:00
x11->screen->white_pixel,
2017-09-28 08:47:12 +00:00
XCB_EVENT_MASK_EXPOSURE |
2017-09-28 09:38:12 +00:00
XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_POINTER_MOTION |
XCB_EVENT_MASK_STRUCTURE_NOTIFY
2017-09-22 04:00:27 +00:00
};
2017-09-26 03:04:07 +00:00
output->x11 = x11;
2018-01-04 11:46:15 +00:00
wlr_output_init(&output->wlr_output, &x11->backend, &output_impl,
x11->wl_display);
2017-09-26 03:04:07 +00:00
snprintf(output->wlr_output.name, sizeof(output->wlr_output.name), "X11-1");
parse_xcb_setup(&output->wlr_output, x11->xcb_conn);
2017-09-22 04:00:27 +00:00
2017-09-26 03:04:07 +00:00
output->win = xcb_generate_id(x11->xcb_conn);
2017-12-11 11:14:23 +00:00
xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win,
x11->screen->root, 0, 0, 1024, 768, 1, XCB_WINDOW_CLASS_INPUT_OUTPUT,
2017-09-26 02:16:25 +00:00
x11->screen->root_visual, mask, values);
2017-09-22 04:00:27 +00:00
2017-09-26 03:04:07 +00:00
output->surf = wlr_egl_create_surface(&x11->egl, &output->win);
if (!output->surf) {
wlr_log(L_ERROR, "Failed to create EGL surface");
return false;
}
2018-03-06 06:57:39 +00:00
struct {
const char *name;
xcb_intern_atom_cookie_t cookie;
xcb_atom_t *atom;
} atom[] = {
{
.name = "WM_PROTOCOLS",
.atom = &x11->atoms.wm_protocols,
},
{
.name = "WM_DELETE_WINDOW",
.atom = &x11->atoms.wm_delete_window,
},
{
.name = "_NET_WM_NAME",
.atom = &x11->atoms.net_wm_name,
},
{
.name = "UTF8_STRING",
.atom = &x11->atoms.utf8_string,
},
};
for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {
atom[i].cookie = xcb_intern_atom(x11->xcb_conn,
true, strlen(atom[i].name), atom[i].name);
}
for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {
xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(
x11->xcb_conn, atom[i].cookie, NULL);
if (reply) {
*atom[i].atom = reply->atom;
free(reply);
} else {
*atom[i].atom = XCB_ATOM_NONE;
}
}
2017-09-28 10:16:35 +00:00
xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
2018-03-06 06:57:39 +00:00
x11->atoms.wm_protocols, XCB_ATOM_ATOM, 32, 1,
&x11->atoms.wm_delete_window);
2017-09-28 10:16:35 +00:00
char title[32];
if (snprintf(title, sizeof(title), "wlroots - %s", output->wlr_output.name)) {
xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
2018-03-06 06:57:39 +00:00
x11->atoms.net_wm_name, x11->atoms.utf8_string, 8,
strlen(title), title);
}
2017-09-26 03:04:07 +00:00
xcb_map_window(x11->xcb_conn, output->win);
2017-09-22 04:00:27 +00:00
xcb_flush(x11->xcb_conn);
2018-01-04 11:46:15 +00:00
wlr_output_update_enabled(&output->wlr_output, true);
2017-09-22 04:00:27 +00:00
wlr_signal_emit_safe(&x11->backend.events.new_output, output);
wlr_signal_emit_safe(&x11->backend.events.new_input, &x11->keyboard_dev);
wlr_signal_emit_safe(&x11->backend.events.new_input, &x11->pointer_dev);
2017-09-26 03:04:07 +00:00
wl_event_source_timer_update(x11->frame_timer, 16);
2017-09-28 08:46:58 +00:00
2017-09-22 04:00:27 +00:00
return true;
2017-09-22 02:58:41 +00:00
}
static void wlr_x11_backend_destroy(struct wlr_backend *backend) {
2017-09-22 04:00:27 +00:00
if (!backend) {
return;
}
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
2017-10-31 13:21:12 +00:00
struct wlr_x11_output *output = &x11->output;
wlr_output_destroy(&output->wlr_output);
wlr_signal_emit_safe(&x11->pointer_dev.events.destroy, &x11->pointer_dev);
wlr_signal_emit_safe(&x11->keyboard_dev.events.destroy, &x11->keyboard_dev);
// TODO probably need to use wlr_keyboard_destroy, but the devices need to
// be malloced for that to work
if (x11->keyboard_dev.keyboard->keymap) {
xkb_keymap_unref(x11->keyboard_dev.keyboard->keymap);
}
if (x11->keyboard_dev.keyboard->xkb_state) {
xkb_state_unref(x11->keyboard_dev.keyboard->xkb_state);
}
2018-02-12 08:12:31 +00:00
wlr_signal_emit_safe(&backend->events.destroy, backend);
2017-12-07 22:44:59 +00:00
wl_list_remove(&x11->display_destroy.link);
2017-09-28 08:46:58 +00:00
wl_event_source_remove(x11->frame_timer);
wlr_egl_finish(&x11->egl);
2017-09-26 02:16:25 +00:00
2017-09-22 04:00:27 +00:00
xcb_disconnect(x11->xcb_conn);
free(x11);
2017-09-22 02:58:41 +00:00
}
2017-09-26 02:16:25 +00:00
static struct wlr_egl *wlr_x11_backend_get_egl(struct wlr_backend *backend) {
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
return &x11->egl;
2017-09-22 02:58:41 +00:00
}
static struct wlr_renderer *wlr_x11_backend_get_renderer(
struct wlr_backend *backend) {
struct wlr_x11_backend *x11 = (struct wlr_x11_backend *)backend;
return x11->renderer;
2017-09-22 04:00:27 +00:00
}
2018-03-06 06:59:10 +00:00
static const struct wlr_backend_impl backend_impl = {
2017-09-22 02:58:41 +00:00
.start = wlr_x11_backend_start,
.destroy = wlr_x11_backend_destroy,
.get_egl = wlr_x11_backend_get_egl,
.get_renderer = wlr_x11_backend_get_renderer,
2017-09-22 02:58:41 +00:00
};
2017-09-26 03:04:07 +00:00
bool wlr_backend_is_x11(struct wlr_backend *backend) {
return backend->impl == &backend_impl;
}
2017-12-07 22:44:59 +00:00
static void handle_display_destroy(struct wl_listener *listener, void *data) {
struct wlr_x11_backend *x11 =
wl_container_of(listener, x11, display_destroy);
wlr_x11_backend_destroy(&x11->backend);
}
struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
const char *x11_display) {
struct wlr_x11_backend *x11 = calloc(1, sizeof(*x11));
if (!x11) {
return NULL;
}
wlr_backend_init(&x11->backend, &backend_impl);
x11->wl_display = display;
x11->xlib_conn = XOpenDisplay(x11_display);
if (!x11->xlib_conn) {
wlr_log(L_ERROR, "Failed to open X connection");
return NULL;
}
x11->xcb_conn = XGetXCBConnection(x11->xlib_conn);
if (!x11->xcb_conn || xcb_connection_has_error(x11->xcb_conn)) {
wlr_log(L_ERROR, "Failed to open xcb connection");
goto error_x11;
}
XSetEventQueueOwner(x11->xlib_conn, XCBOwnsEventQueue);
int fd = xcb_get_file_descriptor(x11->xcb_conn);
struct wl_event_loop *ev = wl_display_get_event_loop(display);
int events = WL_EVENT_READABLE | WL_EVENT_ERROR | WL_EVENT_HANGUP;
x11->event_source = wl_event_loop_add_fd(ev, fd, events, x11_event, x11);
if (!x11->event_source) {
wlr_log(L_ERROR, "Could not create event source");
goto error_x11;
}
x11->frame_timer = wl_event_loop_add_timer(ev, signal_frame, x11);
x11->screen = xcb_setup_roots_iterator(xcb_get_setup(x11->xcb_conn)).data;
if (!wlr_egl_init(&x11->egl, EGL_PLATFORM_X11_KHR, x11->xlib_conn, NULL,
x11->screen->root_visual)) {
2017-12-07 22:44:59 +00:00
goto error_event;
}
x11->renderer = wlr_gles2_renderer_create(&x11->backend);
if (x11->renderer == NULL) {
wlr_log(L_ERROR, "Failed to create renderer");
}
2017-12-07 22:44:59 +00:00
wlr_input_device_init(&x11->keyboard_dev, WLR_INPUT_DEVICE_KEYBOARD,
&input_device_impl, "X11 keyboard", 0, 0);
2017-12-07 22:44:59 +00:00
wlr_keyboard_init(&x11->keyboard, NULL);
x11->keyboard_dev.keyboard = &x11->keyboard;
wlr_input_device_init(&x11->pointer_dev, WLR_INPUT_DEVICE_POINTER,
&input_device_impl, "X11 pointer", 0, 0);
2017-12-07 22:44:59 +00:00
wlr_pointer_init(&x11->pointer, NULL);
x11->pointer_dev.pointer = &x11->pointer;
x11->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &x11->display_destroy);
return &x11->backend;
error_event:
wl_event_source_remove(x11->event_source);
error_x11:
xcb_disconnect(x11->xcb_conn);
XCloseDisplay(x11->xlib_conn);
free(x11);
return NULL;
}
2017-12-11 11:14:23 +00:00
static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
int32_t height, int32_t refresh) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
const uint32_t values[] = { width, height };
xcb_configure_window(x11->xcb_conn, output->win,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
return true;
}
2017-09-29 03:31:04 +00:00
static void output_transform(struct wlr_output *wlr_output, enum wl_output_transform transform) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
output->wlr_output.transform = transform;
2017-09-26 03:04:07 +00:00
}
static void output_destroy(struct wlr_output *wlr_output) {
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
eglDestroySurface(x11->egl.display, output->surf);
xcb_destroy_window(x11->xcb_conn, output->win);
2017-10-31 13:21:12 +00:00
// output has been allocated on the stack, do not free it
2017-09-26 03:04:07 +00:00
}
static bool output_make_current(struct wlr_output *wlr_output, int *buffer_age) {
2017-09-26 03:04:07 +00:00
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
return wlr_egl_make_current(&x11->egl, output->surf, buffer_age);
2017-09-26 03:04:07 +00:00
}
2018-02-09 21:54:14 +00:00
static bool output_swap_buffers(struct wlr_output *wlr_output,
pixman_region32_t *damage) {
2017-09-26 03:04:07 +00:00
struct wlr_x11_output *output = (struct wlr_x11_output *)wlr_output;
struct wlr_x11_backend *x11 = output->x11;
2018-02-09 21:54:14 +00:00
return wlr_egl_swap_buffers(&x11->egl, output->surf, damage);
2017-09-26 03:04:07 +00:00
}
2018-03-06 06:59:10 +00:00
static const struct wlr_output_impl output_impl = {
2017-12-11 11:14:23 +00:00
.set_custom_mode = output_set_custom_mode,
2017-09-26 03:04:07 +00:00
.transform = output_transform,
.destroy = output_destroy,
.make_current = output_make_current,
.swap_buffers = output_swap_buffers,
};
2017-12-19 18:49:46 +00:00
bool wlr_output_is_x11(struct wlr_output *wlr_output) {
return wlr_output->impl == &output_impl;
}
bool wlr_input_device_is_x11(struct wlr_input_device *wlr_dev) {
return wlr_dev->impl == &input_device_impl;
}