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pH/sommelier/sommelier.c
Bruce Leidl 1dcad9f1f4 add sommelier
2019-09-20 18:57:28 -04:00

4147 lines
138 KiB
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// Copyright 2017 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sommelier.h"
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <gbm.h>
#include <libgen.h>
#include <linux/virtwl.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <unistd.h>
#include <wayland-client.h>
#include <xcb/composite.h>
#include <xcb/xfixes.h>
#include "aura-shell-client-protocol.h"
#include "drm-server-protocol.h"
#include "keyboard-extension-unstable-v1-client-protocol.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
#include "relative-pointer-unstable-v1-client-protocol.h"
#include "text-input-unstable-v1-client-protocol.h"
#include "viewporter-client-protocol.h"
#include "xdg-shell-unstable-v6-client-protocol.h"
// Check that required macro definitions exist.
#ifndef XWAYLAND_PATH
#error XWAYLAND_PATH must be defined
#endif
#ifndef XWAYLAND_GL_DRIVER_PATH
#error XWAYLAND_GL_DRIVER_PATH must be defined
#endif
#ifndef XWAYLAND_SHM_DRIVER
#error XWAYLAND_SHM_DRIVER must be defined
#endif
#ifndef SHM_DRIVER
#error SHM_DRIVER must be defined
#endif
#ifndef VIRTWL_DEVICE
#error VIRTWL_DEVICE must be defined
#endif
#ifndef PEER_CMD_PREFIX
#error PEER_CMD_PREFIX must be defined
#endif
#ifndef FRAME_COLOR
#error FRAME_COLOR must be defined
#endif
#ifndef DARK_FRAME_COLOR
#error DARK_FRAME_COLOR must be defined
#endif
struct sl_data_source {
struct sl_context* ctx;
struct wl_data_source *internal;
};
enum {
PROPERTY_WM_NAME,
PROPERTY_WM_CLASS,
PROPERTY_WM_TRANSIENT_FOR,
PROPERTY_WM_NORMAL_HINTS,
PROPERTY_WM_CLIENT_LEADER,
PROPERTY_MOTIF_WM_HINTS,
PROPERTY_NET_STARTUP_ID,
PROPERTY_GTK_THEME_VARIANT,
};
#define US_POSITION (1L << 0)
#define US_SIZE (1L << 1)
#define P_POSITION (1L << 2)
#define P_SIZE (1L << 3)
#define P_MIN_SIZE (1L << 4)
#define P_MAX_SIZE (1L << 5)
#define P_RESIZE_INC (1L << 6)
#define P_ASPECT (1L << 7)
#define P_BASE_SIZE (1L << 8)
#define P_WIN_GRAVITY (1L << 9)
struct sl_wm_size_hints {
uint32_t flags;
int32_t x, y;
int32_t width, height;
int32_t min_width, min_height;
int32_t max_width, max_height;
int32_t width_inc, height_inc;
struct {
int32_t x;
int32_t y;
} min_aspect, max_aspect;
int32_t base_width, base_height;
int32_t win_gravity;
};
#define MWM_HINTS_FUNCTIONS (1L << 0)
#define MWM_HINTS_DECORATIONS (1L << 1)
#define MWM_HINTS_INPUT_MODE (1L << 2)
#define MWM_HINTS_STATUS (1L << 3)
#define MWM_DECOR_ALL (1L << 0)
#define MWM_DECOR_BORDER (1L << 1)
#define MWM_DECOR_RESIZEH (1L << 2)
#define MWM_DECOR_TITLE (1L << 3)
#define MWM_DECOR_MENU (1L << 4)
#define MWM_DECOR_MINIMIZE (1L << 5)
#define MWM_DECOR_MAXIMIZE (1L << 6)
struct sl_mwm_hints {
uint32_t flags;
uint32_t functions;
uint32_t decorations;
int32_t input_mode;
uint32_t status;
};
#define NET_WM_MOVERESIZE_SIZE_TOPLEFT 0
#define NET_WM_MOVERESIZE_SIZE_TOP 1
#define NET_WM_MOVERESIZE_SIZE_TOPRIGHT 2
#define NET_WM_MOVERESIZE_SIZE_RIGHT 3
#define NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT 4
#define NET_WM_MOVERESIZE_SIZE_BOTTOM 5
#define NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT 6
#define NET_WM_MOVERESIZE_SIZE_LEFT 7
#define NET_WM_MOVERESIZE_MOVE 8
#define NET_WM_STATE_REMOVE 0
#define NET_WM_STATE_ADD 1
#define NET_WM_STATE_TOGGLE 2
#define WM_STATE_WITHDRAWN 0
#define WM_STATE_NORMAL 1
#define WM_STATE_ICONIC 3
#define SEND_EVENT_MASK 0x80
#define MIN_SCALE 0.1
#define MAX_SCALE 10.0
#define MIN_DPI 72
#define MAX_DPI 9600
#define XCURSOR_SIZE_BASE 24
#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 108
#endif
#define LOCK_SUFFIX ".lock"
#define LOCK_SUFFIXLEN 5
#define APPLICATION_ID_FORMAT_PREFIX "org.chromium.termina"
#define XID_APPLICATION_ID_FORMAT APPLICATION_ID_FORMAT_PREFIX ".xid.%d"
#define WM_CLIENT_LEADER_APPLICATION_ID_FORMAT \
APPLICATION_ID_FORMAT_PREFIX ".wmclientleader.%d"
#define WM_CLASS_APPLICATION_ID_FORMAT \
APPLICATION_ID_FORMAT_PREFIX ".wmclass.%s"
#define MIN_AURA_SHELL_VERSION 6
// Performs an asprintf operation and checks the result for validity and calls
// abort() if there's a failure. Returns a newly allocated string rather than
// taking a double pointer argument like asprintf.
__attribute__((__format__(__printf__, 1, 0))) static char* sl_xasprintf(
const char* fmt, ...) {
char* str;
va_list args;
va_start(args, fmt);
int rv = vasprintf(&str, fmt, args);
assert(rv >= 0);
UNUSED(rv);
va_end(args);
return str;
}
struct sl_mmap* sl_mmap_create(int fd,
size_t size,
size_t bpp,
size_t num_planes,
size_t offset0,
size_t stride0,
size_t offset1,
size_t stride1,
size_t y_ss0,
size_t y_ss1) {
struct sl_mmap* map;
map = malloc(sizeof(*map));
map->refcount = 1;
map->fd = fd;
map->size = size;
map->num_planes = num_planes;
map->bpp = bpp;
map->offset[0] = offset0;
map->stride[0] = stride0;
map->offset[1] = offset1;
map->stride[1] = stride1;
map->y_ss[0] = y_ss0;
map->y_ss[1] = y_ss1;
map->begin_write = NULL;
map->end_write = NULL;
map->buffer_resource = NULL;
map->addr =
mmap(NULL, size + offset0, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
assert(map->addr != MAP_FAILED);
return map;
}
struct sl_mmap* sl_mmap_ref(struct sl_mmap* map) {
map->refcount++;
return map;
}
void sl_mmap_unref(struct sl_mmap* map) {
if (map->refcount-- == 1) {
munmap(map->addr, map->size + map->offset[0]);
close(map->fd);
free(map);
}
}
struct sl_sync_point* sl_sync_point_create(int fd) {
struct sl_sync_point* sync_point;
sync_point = malloc(sizeof(*sync_point));
sync_point->fd = fd;
sync_point->sync = NULL;
return sync_point;
}
void sl_sync_point_destroy(struct sl_sync_point* sync_point)
{
close(sync_point->fd);
free(sync_point);
}
static void sl_internal_xdg_shell_ping(void* data,
struct zxdg_shell_v6* xdg_shell,
uint32_t serial) {
zxdg_shell_v6_pong(xdg_shell, serial);
}
static const struct zxdg_shell_v6_listener sl_internal_xdg_shell_listener = {
sl_internal_xdg_shell_ping};
static void sl_send_configure_notify(struct sl_window* window) {
xcb_configure_notify_event_t event = {
.response_type = XCB_CONFIGURE_NOTIFY,
.event = window->id,
.window = window->id,
.above_sibling = XCB_WINDOW_NONE,
.x = window->x,
.y = window->y,
.width = window->width,
.height = window->height,
.border_width = window->border_width,
.override_redirect = 0,
.pad0 = 0,
.pad1 = 0,
};
xcb_send_event(window->ctx->connection, 0, window->id,
XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)&event);
}
static void sl_adjust_window_size_for_screen_size(struct sl_window* window) {
struct sl_context* ctx = window->ctx;
// Clamp size to screen.
window->width = MIN(window->width, ctx->screen->width_in_pixels);
window->height = MIN(window->height, ctx->screen->height_in_pixels);
}
static void sl_adjust_window_position_for_screen_size(
struct sl_window* window) {
struct sl_context* ctx = window->ctx;
// Center horizontally/vertically.
window->x = ctx->screen->width_in_pixels / 2 - window->width / 2;
window->y = ctx->screen->height_in_pixels / 2 - window->height / 2;
}
static void sl_configure_window(struct sl_window* window) {
assert(!window->pending_config.serial);
if (window->next_config.mask) {
int values[5];
int x = window->x;
int y = window->y;
int i = 0;
xcb_configure_window(window->ctx->connection, window->frame_id,
window->next_config.mask, window->next_config.values);
if (window->next_config.mask & XCB_CONFIG_WINDOW_X)
x = window->next_config.values[i++];
if (window->next_config.mask & XCB_CONFIG_WINDOW_Y)
y = window->next_config.values[i++];
if (window->next_config.mask & XCB_CONFIG_WINDOW_WIDTH)
window->width = window->next_config.values[i++];
if (window->next_config.mask & XCB_CONFIG_WINDOW_HEIGHT)
window->height = window->next_config.values[i++];
if (window->next_config.mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
window->border_width = window->next_config.values[i++];
// Set x/y to origin in case window gravity is not northwest as expected.
assert(window->managed);
values[0] = 0;
values[1] = 0;
values[2] = window->width;
values[3] = window->height;
values[4] = window->border_width;
xcb_configure_window(
window->ctx->connection, window->id,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_BORDER_WIDTH,
values);
if (x != window->x || y != window->y) {
window->x = x;
window->y = y;
sl_send_configure_notify(window);
}
}
if (window->managed) {
xcb_change_property(window->ctx->connection, XCB_PROP_MODE_REPLACE,
window->id, window->ctx->atoms[ATOM_NET_WM_STATE].value,
XCB_ATOM_ATOM, 32, window->next_config.states_length,
window->next_config.states);
}
window->pending_config = window->next_config;
window->next_config.serial = 0;
window->next_config.mask = 0;
window->next_config.states_length = 0;
}
static void sl_set_input_focus(struct sl_context* ctx,
struct sl_window* window) {
if (window) {
xcb_client_message_event_t event = {
.response_type = XCB_CLIENT_MESSAGE,
.format = 32,
.window = window->id,
.type = ctx->atoms[ATOM_WM_PROTOCOLS].value,
.data.data32 =
{
ctx->atoms[ATOM_WM_TAKE_FOCUS].value, XCB_CURRENT_TIME,
},
};
if (!window->managed)
return;
xcb_send_event(ctx->connection, 0, window->id,
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (char*)&event);
xcb_set_input_focus(ctx->connection, XCB_INPUT_FOCUS_NONE, window->id,
XCB_CURRENT_TIME);
} else {
xcb_set_input_focus(ctx->connection, XCB_INPUT_FOCUS_NONE, XCB_NONE,
XCB_CURRENT_TIME);
}
}
void sl_restack_windows(struct sl_context* ctx, uint32_t focus_resource_id) {
struct sl_window* sibling;
uint32_t values[1];
wl_list_for_each(sibling, &ctx->windows, link) {
if (!sibling->managed)
continue;
// Move focus window to the top and all other windows to the bottom.
values[0] = sibling->host_surface_id == focus_resource_id
? XCB_STACK_MODE_ABOVE
: XCB_STACK_MODE_BELOW;
xcb_configure_window(ctx->connection, sibling->frame_id,
XCB_CONFIG_WINDOW_STACK_MODE, values);
}
}
void sl_roundtrip(struct sl_context* ctx) {
free(xcb_get_input_focus_reply(ctx->connection,
xcb_get_input_focus(ctx->connection), NULL));
}
int sl_process_pending_configure_acks(struct sl_window* window,
struct sl_host_surface* host_surface) {
if (!window->pending_config.serial)
return 0;
if (window->managed && host_surface) {
int width = window->width + window->border_width * 2;
int height = window->height + window->border_width * 2;
// Early out if we expect contents to match window size at some point in
// the future.
if (width != host_surface->contents_width ||
height != host_surface->contents_height) {
return 0;
}
}
if (window->xdg_surface) {
zxdg_surface_v6_ack_configure(window->xdg_surface,
window->pending_config.serial);
}
window->pending_config.serial = 0;
if (window->next_config.serial)
sl_configure_window(window);
return 1;
}
static void sl_internal_xdg_surface_configure(
void* data, struct zxdg_surface_v6* xdg_surface, uint32_t serial) {
struct sl_window* window = zxdg_surface_v6_get_user_data(xdg_surface);
window->next_config.serial = serial;
if (!window->pending_config.serial) {
struct wl_resource *host_resource;
struct sl_host_surface* host_surface = NULL;
host_resource =
wl_client_get_object(window->ctx->client, window->host_surface_id);
if (host_resource)
host_surface = wl_resource_get_user_data(host_resource);
sl_configure_window(window);
if (sl_process_pending_configure_acks(window, host_surface)) {
if (host_surface)
wl_surface_commit(host_surface->proxy);
}
}
}
static const struct zxdg_surface_v6_listener sl_internal_xdg_surface_listener =
{sl_internal_xdg_surface_configure};
static void sl_internal_xdg_toplevel_configure(
void* data,
struct zxdg_toplevel_v6* xdg_toplevel,
int32_t width,
int32_t height,
struct wl_array* states) {
struct sl_window* window = zxdg_toplevel_v6_get_user_data(xdg_toplevel);
int activated = 0;
uint32_t *state;
int i = 0;
if (!window->managed)
return;
if (width && height) {
int32_t width_in_pixels = width * window->ctx->scale;
int32_t height_in_pixels = height * window->ctx->scale;
int i = 0;
window->next_config.mask = XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT |
XCB_CONFIG_WINDOW_BORDER_WIDTH;
if (!(window->size_flags & (US_POSITION | P_POSITION))) {
window->next_config.mask |= XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y;
window->next_config.values[i++] =
window->ctx->screen->width_in_pixels / 2 - width_in_pixels / 2;
window->next_config.values[i++] =
window->ctx->screen->height_in_pixels / 2 - height_in_pixels / 2;
}
window->next_config.values[i++] = width_in_pixels;
window->next_config.values[i++] = height_in_pixels;
window->next_config.values[i++] = 0;
}
window->allow_resize = 1;
wl_array_for_each(state, states) {
if (*state == ZXDG_TOPLEVEL_V6_STATE_FULLSCREEN) {
window->allow_resize = 0;
window->next_config.states[i++] =
window->ctx->atoms[ATOM_NET_WM_STATE_FULLSCREEN].value;
}
if (*state == ZXDG_TOPLEVEL_V6_STATE_MAXIMIZED) {
window->allow_resize = 0;
window->next_config.states[i++] =
window->ctx->atoms[ATOM_NET_WM_STATE_MAXIMIZED_VERT].value;
window->next_config.states[i++] =
window->ctx->atoms[ATOM_NET_WM_STATE_MAXIMIZED_HORZ].value;
}
if (*state == ZXDG_TOPLEVEL_V6_STATE_ACTIVATED)
activated = 1;
if (*state == ZXDG_TOPLEVEL_V6_STATE_RESIZING)
window->allow_resize = 0;
}
if (activated != window->activated) {
if (activated != (window->ctx->host_focus_window == window)) {
window->ctx->host_focus_window = activated ? window : NULL;
window->ctx->needs_set_input_focus = 1;
}
window->activated = activated;
}
window->next_config.states_length = i;
}
static void sl_internal_xdg_toplevel_close(
void* data, struct zxdg_toplevel_v6* xdg_toplevel) {
struct sl_window* window = zxdg_toplevel_v6_get_user_data(xdg_toplevel);
xcb_client_message_event_t event = {
.response_type = XCB_CLIENT_MESSAGE,
.format = 32,
.window = window->id,
.type = window->ctx->atoms[ATOM_WM_PROTOCOLS].value,
.data.data32 =
{
window->ctx->atoms[ATOM_WM_DELETE_WINDOW].value, XCB_CURRENT_TIME,
},
};
xcb_send_event(window->ctx->connection, 0, window->id,
XCB_EVENT_MASK_NO_EVENT, (const char*)&event);
}
static const struct zxdg_toplevel_v6_listener
sl_internal_xdg_toplevel_listener = {sl_internal_xdg_toplevel_configure,
sl_internal_xdg_toplevel_close};
static void sl_internal_xdg_popup_configure(void* data,
struct zxdg_popup_v6* xdg_popup,
int32_t x,
int32_t y,
int32_t width,
int32_t height) {}
static void sl_internal_xdg_popup_done(void* data,
struct zxdg_popup_v6* zxdg_popup_v6) {}
static const struct zxdg_popup_v6_listener sl_internal_xdg_popup_listener = {
sl_internal_xdg_popup_configure, sl_internal_xdg_popup_done};
static void sl_window_set_wm_state(struct sl_window* window, int state) {
struct sl_context* ctx = window->ctx;
uint32_t values[2];
values[0] = state;
values[1] = XCB_WINDOW_NONE;
xcb_change_property(ctx->connection, XCB_PROP_MODE_REPLACE, window->id,
ctx->atoms[ATOM_WM_STATE].value,
ctx->atoms[ATOM_WM_STATE].value, 32, 2, values);
}
void sl_window_update(struct sl_window* window) {
struct wl_resource *host_resource = NULL;
struct sl_host_surface* host_surface;
struct sl_context* ctx = window->ctx;
struct sl_window* parent = NULL;
if (window->host_surface_id) {
host_resource = wl_client_get_object(ctx->client, window->host_surface_id);
if (host_resource && window->unpaired) {
wl_list_remove(&window->link);
wl_list_insert(&ctx->windows, &window->link);
window->unpaired = 0;
}
} else if (!window->unpaired) {
wl_list_remove(&window->link);
wl_list_insert(&ctx->unpaired_windows, &window->link);
window->unpaired = 1;
}
if (!host_resource) {
if (window->aura_surface) {
zaura_surface_destroy(window->aura_surface);
window->aura_surface = NULL;
}
if (window->xdg_toplevel) {
zxdg_toplevel_v6_destroy(window->xdg_toplevel);
window->xdg_toplevel = NULL;
}
if (window->xdg_popup) {
zxdg_popup_v6_destroy(window->xdg_popup);
window->xdg_popup = NULL;
}
if (window->xdg_surface) {
zxdg_surface_v6_destroy(window->xdg_surface);
window->xdg_surface = NULL;
}
window->realized = 0;
return;
}
host_surface = wl_resource_get_user_data(host_resource);
assert(host_surface);
assert(!host_surface->has_role);
assert(ctx->xdg_shell);
assert(ctx->xdg_shell->internal);
if (window->managed) {
if (window->transient_for != XCB_WINDOW_NONE) {
struct sl_window* sibling;
wl_list_for_each(sibling, &ctx->windows, link) {
if (sibling->id == window->transient_for) {
if (sibling->xdg_toplevel)
parent = sibling;
break;
}
}
}
}
// If we have a transient parent, but could not find it in the list of
// realized windows, then pick the window that had the last event for the
// parent. We update this again when we gain focus, so if we picked the wrong
// one it can get corrected at that point (but it's also possible the parent
// will never be realized, which is why selecting one here is important).
if (!window->managed ||
(!parent && window->transient_for != XCB_WINDOW_NONE)) {
struct sl_window* sibling;
uint32_t parent_last_event_serial = 0;
wl_list_for_each(sibling, &ctx->windows, link) {
struct wl_resource *sibling_host_resource;
struct sl_host_surface* sibling_host_surface;
if (!sibling->realized)
continue;
sibling_host_resource =
wl_client_get_object(ctx->client, sibling->host_surface_id);
if (!sibling_host_resource)
continue;
// Any parent will do but prefer last event window.
sibling_host_surface = wl_resource_get_user_data(sibling_host_resource);
if (parent_last_event_serial > sibling_host_surface->last_event_serial)
continue;
// Do not use ourselves as the parent.
if (sibling->host_surface_id == window->host_surface_id)
continue;
parent = sibling;
parent_last_event_serial = sibling_host_surface->last_event_serial;
}
}
if (!window->depth) {
xcb_get_geometry_reply_t* geometry_reply = xcb_get_geometry_reply(
ctx->connection, xcb_get_geometry(ctx->connection, window->id), NULL);
if (geometry_reply) {
window->depth = geometry_reply->depth;
free(geometry_reply);
}
}
if (!window->xdg_surface) {
window->xdg_surface = zxdg_shell_v6_get_xdg_surface(
ctx->xdg_shell->internal, host_surface->proxy);
zxdg_surface_v6_set_user_data(window->xdg_surface, window);
zxdg_surface_v6_add_listener(window->xdg_surface,
&sl_internal_xdg_surface_listener, window);
}
if (ctx->aura_shell) {
uint32_t frame_color;
if (!window->aura_surface) {
window->aura_surface = zaura_shell_get_aura_surface(
ctx->aura_shell->internal, host_surface->proxy);
}
zaura_surface_set_frame(window->aura_surface,
window->decorated
? ZAURA_SURFACE_FRAME_TYPE_NORMAL
: window->depth == 32
? ZAURA_SURFACE_FRAME_TYPE_NONE
: ZAURA_SURFACE_FRAME_TYPE_SHADOW);
frame_color = window->dark_frame ? ctx->dark_frame_color : ctx->frame_color;
zaura_surface_set_frame_colors(window->aura_surface, frame_color,
frame_color);
zaura_surface_set_startup_id(window->aura_surface, window->startup_id);
if (ctx->application_id) {
zaura_surface_set_application_id(window->aura_surface,
ctx->application_id);
} else {
// Don't set application id for X11 override redirect. This prevents
// aura shell from thinking that these are regular application windows
// that should appear in application lists.
if (!ctx->xwayland || window->managed) {
char* application_id_str;
if (window->clazz) {
application_id_str =
sl_xasprintf(WM_CLASS_APPLICATION_ID_FORMAT, window->clazz);
} else if (window->client_leader != XCB_WINDOW_NONE) {
application_id_str = sl_xasprintf(
WM_CLIENT_LEADER_APPLICATION_ID_FORMAT, window->client_leader);
} else {
application_id_str =
sl_xasprintf(XID_APPLICATION_ID_FORMAT, window->id);
}
zaura_surface_set_application_id(window->aura_surface,
application_id_str);
free(application_id_str);
}
}
}
// Always use top-level surface for X11 windows as we can't control when the
// window is closed.
if (ctx->xwayland || !parent) {
if (!window->xdg_toplevel) {
window->xdg_toplevel = zxdg_surface_v6_get_toplevel(window->xdg_surface);
zxdg_toplevel_v6_set_user_data(window->xdg_toplevel, window);
zxdg_toplevel_v6_add_listener(window->xdg_toplevel,
&sl_internal_xdg_toplevel_listener, window);
}
if (parent)
zxdg_toplevel_v6_set_parent(window->xdg_toplevel, parent->xdg_toplevel);
if (window->name)
zxdg_toplevel_v6_set_title(window->xdg_toplevel, window->name);
if (window->size_flags & P_MIN_SIZE) {
zxdg_toplevel_v6_set_min_size(window->xdg_toplevel,
window->min_width / ctx->scale,
window->min_height / ctx->scale);
}
if (window->size_flags & P_MAX_SIZE) {
zxdg_toplevel_v6_set_max_size(window->xdg_toplevel,
window->max_width / ctx->scale,
window->max_height / ctx->scale);
}
} else if (!window->xdg_popup) {
struct zxdg_positioner_v6 *positioner;
positioner = zxdg_shell_v6_create_positioner(ctx->xdg_shell->internal);
assert(positioner);
zxdg_positioner_v6_set_anchor(positioner,
ZXDG_POSITIONER_V6_ANCHOR_TOP |
ZXDG_POSITIONER_V6_ANCHOR_LEFT);
zxdg_positioner_v6_set_gravity(positioner,
ZXDG_POSITIONER_V6_GRAVITY_BOTTOM |
ZXDG_POSITIONER_V6_GRAVITY_RIGHT);
zxdg_positioner_v6_set_anchor_rect(
positioner, (window->x - parent->x) / ctx->scale,
(window->y - parent->y) / ctx->scale, 1, 1);
window->xdg_popup = zxdg_surface_v6_get_popup(
window->xdg_surface, parent->xdg_surface, positioner);
zxdg_popup_v6_set_user_data(window->xdg_popup, window);
zxdg_popup_v6_add_listener(window->xdg_popup,
&sl_internal_xdg_popup_listener, window);
zxdg_positioner_v6_destroy(positioner);
}
if ((window->size_flags & (US_POSITION | P_POSITION)) && parent &&
ctx->aura_shell) {
zaura_surface_set_parent(window->aura_surface, parent->aura_surface,
(window->x - parent->x) / ctx->scale,
(window->y - parent->y) / ctx->scale);
}
wl_surface_commit(host_surface->proxy);
if (host_surface->contents_width && host_surface->contents_height)
window->realized = 1;
}
static void sl_host_buffer_destroy(struct wl_client* client,
struct wl_resource* resource) {
wl_resource_destroy(resource);
}
static const struct wl_buffer_interface sl_buffer_implementation = {
sl_host_buffer_destroy};
static void sl_buffer_release(void* data, struct wl_buffer* buffer) {
struct sl_host_buffer* host = wl_buffer_get_user_data(buffer);
wl_buffer_send_release(host->resource);
}
static const struct wl_buffer_listener sl_buffer_listener = {sl_buffer_release};
static void sl_destroy_host_buffer(struct wl_resource* resource) {
struct sl_host_buffer* host = wl_resource_get_user_data(resource);
if (host->proxy)
wl_buffer_destroy(host->proxy);
if (host->shm_mmap) {
host->shm_mmap->buffer_resource = NULL;
sl_mmap_unref(host->shm_mmap);
}
if (host->sync_point) {
sl_sync_point_destroy(host->sync_point);
}
wl_resource_set_user_data(resource, NULL);
free(host);
}
struct sl_host_buffer* sl_create_host_buffer(struct wl_client* client,
uint32_t id,
struct wl_buffer* proxy,
int32_t width,
int32_t height) {
struct sl_host_buffer* host_buffer;
host_buffer = malloc(sizeof(*host_buffer));
assert(host_buffer);
host_buffer->width = width;
host_buffer->height = height;
host_buffer->resource =
wl_resource_create(client, &wl_buffer_interface, 1, id);
wl_resource_set_implementation(host_buffer->resource,
&sl_buffer_implementation, host_buffer,
sl_destroy_host_buffer);
host_buffer->shm_mmap = NULL;
host_buffer->shm_format = 0;
host_buffer->proxy = proxy;
if (host_buffer->proxy) {
wl_buffer_set_user_data(host_buffer->proxy, host_buffer);
wl_buffer_add_listener(host_buffer->proxy, &sl_buffer_listener,
host_buffer);
}
host_buffer->sync_point = NULL;
return host_buffer;
}
static void sl_internal_data_offer_destroy(struct sl_data_offer* host) {
wl_data_offer_destroy(host->internal);
wl_array_release(&host->atoms);
wl_array_release(&host->cookies);
free(host);
}
static void sl_set_selection(struct sl_context* ctx,
struct sl_data_offer* data_offer) {
if (ctx->selection_data_offer) {
sl_internal_data_offer_destroy(ctx->selection_data_offer);
ctx->selection_data_offer = NULL;
}
if (ctx->clipboard_manager) {
if (!data_offer) {
if (ctx->selection_owner == ctx->selection_window)
xcb_set_selection_owner(ctx->connection, XCB_ATOM_NONE,
ctx->atoms[ATOM_CLIPBOARD].value,
ctx->selection_timestamp);
return;
}
int atoms = data_offer->cookies.size / sizeof(xcb_intern_atom_cookie_t);
wl_array_add(&data_offer->atoms, sizeof(xcb_atom_t) * (atoms + 2));
((xcb_atom_t*)data_offer->atoms.data)[0] = ctx->atoms[ATOM_TARGETS].value;
((xcb_atom_t*)data_offer->atoms.data)[1] = ctx->atoms[ATOM_TIMESTAMP].value;
for (int i = 0; i < atoms; i++) {
xcb_intern_atom_cookie_t cookie =
((xcb_intern_atom_cookie_t*)data_offer->cookies.data)[i];
xcb_intern_atom_reply_t* reply =
xcb_intern_atom_reply(ctx->connection, cookie, NULL);
if (reply) {
((xcb_atom_t*)data_offer->atoms.data)[i + 2] = reply->atom;
free(reply);
}
}
xcb_set_selection_owner(ctx->connection, ctx->selection_window,
ctx->atoms[ATOM_CLIPBOARD].value, XCB_CURRENT_TIME);
}
ctx->selection_data_offer = data_offer;
}
static void sl_internal_data_offer_offer(void* data,
struct wl_data_offer* data_offer,
const char* type) {
struct sl_data_offer* host = data;
xcb_intern_atom_cookie_t* cookie =
wl_array_add(&host->cookies, sizeof(xcb_intern_atom_cookie_t));
*cookie = xcb_intern_atom(host->ctx->connection, 0, strlen(type), type);
}
static void sl_internal_data_offer_source_actions(
void* data, struct wl_data_offer* data_offer, uint32_t source_actions) {}
static void sl_internal_data_offer_action(void* data,
struct wl_data_offer* data_offer,
uint32_t dnd_action) {}
static const struct wl_data_offer_listener sl_internal_data_offer_listener = {
sl_internal_data_offer_offer, sl_internal_data_offer_source_actions,
sl_internal_data_offer_action};
static void sl_internal_data_device_data_offer(
void* data,
struct wl_data_device* data_device,
struct wl_data_offer* data_offer) {
struct sl_context* ctx = (struct sl_context*)data;
struct sl_data_offer* host_data_offer;
host_data_offer = malloc(sizeof(*host_data_offer));
assert(host_data_offer);
host_data_offer->ctx = ctx;
host_data_offer->internal = data_offer;
wl_array_init(&host_data_offer->atoms);
wl_array_init(&host_data_offer->cookies);
wl_data_offer_add_listener(host_data_offer->internal,
&sl_internal_data_offer_listener, host_data_offer);
}
static void sl_internal_data_device_enter(void* data,
struct wl_data_device* data_device,
uint32_t serial,
struct wl_surface* surface,
wl_fixed_t x,
wl_fixed_t y,
struct wl_data_offer* data_offer) {}
static void sl_internal_data_device_leave(void* data,
struct wl_data_device* data_device) {}
static void sl_internal_data_device_motion(void* data,
struct wl_data_device* data_device,
uint32_t time,
wl_fixed_t x,
wl_fixed_t y) {}
static void sl_internal_data_device_drop(void* data,
struct wl_data_device* data_device) {}
static void sl_internal_data_device_selection(
void* data,
struct wl_data_device* data_device,
struct wl_data_offer* data_offer) {
struct sl_context* ctx = (struct sl_context*)data;
struct sl_data_offer* host_data_offer =
data_offer ? wl_data_offer_get_user_data(data_offer) : NULL;
sl_set_selection(ctx, host_data_offer);
}
static const struct wl_data_device_listener sl_internal_data_device_listener = {
sl_internal_data_device_data_offer, sl_internal_data_device_enter,
sl_internal_data_device_leave, sl_internal_data_device_motion,
sl_internal_data_device_drop, sl_internal_data_device_selection};
void sl_host_seat_added(struct sl_host_seat* host) {
struct sl_context* ctx = host->seat->ctx;
if (ctx->default_seat)
return;
ctx->default_seat = host;
// Get data device for selections.
if (ctx->data_device_manager && ctx->data_device_manager->internal) {
ctx->selection_data_device = wl_data_device_manager_get_data_device(
ctx->data_device_manager->internal, host->proxy);
wl_data_device_add_listener(ctx->selection_data_device,
&sl_internal_data_device_listener, ctx);
}
}
void sl_host_seat_removed(struct sl_host_seat* host) {
if (host->seat->ctx->default_seat == host)
host->seat->ctx->default_seat = NULL;
}
struct sl_global* sl_global_create(struct sl_context* ctx,
const struct wl_interface* interface,
int version,
void* data,
wl_global_bind_func_t bind) {
struct sl_host_registry* registry;
struct sl_global* global;
assert(version > 0);
assert(version <= interface->version);
global = malloc(sizeof *global);
assert(global);
global->ctx = ctx;
global->name = ctx->next_global_id++;
global->interface = interface;
global->version = version;
global->data = data;
global->bind = bind;
wl_list_insert(ctx->globals.prev, &global->link);
wl_list_for_each(registry, &ctx->registries, link) {
wl_resource_post_event(registry->resource, WL_REGISTRY_GLOBAL, global->name,
global->interface->name, global->version);
}
return global;
}
static void sl_global_destroy(struct sl_global* global) {
struct sl_host_registry* registry;
wl_list_for_each(registry, &global->ctx->registries, link)
wl_resource_post_event(registry->resource, WL_REGISTRY_GLOBAL_REMOVE,
global->name);
wl_list_remove(&global->link);
free(global);
}
static void sl_registry_handler(void* data,
struct wl_registry* registry,
uint32_t id,
const char* interface,
uint32_t version) {
struct sl_context* ctx = (struct sl_context*)data;
if (strcmp(interface, "wl_compositor") == 0) {
struct sl_compositor* compositor = malloc(sizeof(struct sl_compositor));
assert(compositor);
compositor->ctx = ctx;
compositor->id = id;
assert(version >= 3);
compositor->version = 3;
compositor->internal = wl_registry_bind(
registry, id, &wl_compositor_interface, compositor->version);
assert(!ctx->compositor);
ctx->compositor = compositor;
compositor->host_global = sl_compositor_global_create(ctx);
} else if (strcmp(interface, "wl_subcompositor") == 0) {
struct sl_subcompositor* subcompositor =
malloc(sizeof(struct sl_subcompositor));
assert(subcompositor);
subcompositor->ctx = ctx;
subcompositor->id = id;
assert(!ctx->subcompositor);
ctx->subcompositor = subcompositor;
subcompositor->host_global = sl_subcompositor_global_create(ctx);
} else if (strcmp(interface, "wl_shm") == 0) {
struct sl_shm* shm = malloc(sizeof(struct sl_shm));
assert(shm);
shm->ctx = ctx;
shm->id = id;
shm->internal = wl_registry_bind(registry, id, &wl_shm_interface, 1);
assert(!ctx->shm);
ctx->shm = shm;
shm->host_global = sl_shm_global_create(ctx);
} else if (strcmp(interface, "wl_shell") == 0) {
struct sl_shell* shell = malloc(sizeof(struct sl_shell));
assert(shell);
shell->ctx = ctx;
shell->id = id;
assert(!ctx->shell);
ctx->shell = shell;
shell->host_global = sl_shell_global_create(ctx);
} else if (strcmp(interface, "wl_output") == 0) {
struct sl_output* output = malloc(sizeof(struct sl_output));
assert(output);
output->ctx = ctx;
output->id = id;
output->version = MIN(3, version);
output->host_global = sl_output_global_create(output);
wl_list_insert(&ctx->outputs, &output->link);
} else if (strcmp(interface, "wl_seat") == 0) {
struct sl_seat* seat = malloc(sizeof(struct sl_seat));
assert(seat);
seat->ctx = ctx;
seat->id = id;
seat->version = MIN(5, version);
seat->last_serial = 0;
seat->host_global = sl_seat_global_create(seat);
wl_list_insert(&ctx->seats, &seat->link);
} else if (strcmp(interface, "zwp_relative_pointer_manager_v1") == 0) {
struct sl_relative_pointer_manager* relative_pointer =
malloc(sizeof(struct sl_relative_pointer_manager));
assert(relative_pointer);
relative_pointer->ctx = ctx;
relative_pointer->id = id;
relative_pointer->internal = wl_registry_bind(
registry, id, &zwp_relative_pointer_manager_v1_interface, 1);
assert(!ctx->relative_pointer_manager);
ctx->relative_pointer_manager = relative_pointer;
relative_pointer->host_global =
sl_relative_pointer_manager_global_create(ctx);
} else if (strcmp(interface, "wl_data_device_manager") == 0) {
struct sl_data_device_manager* data_device_manager =
malloc(sizeof(struct sl_data_device_manager));
assert(data_device_manager);
data_device_manager->ctx = ctx;
data_device_manager->id = id;
data_device_manager->version = MIN(3, version);
data_device_manager->internal = NULL;
data_device_manager->host_global = NULL;
assert(!ctx->data_device_manager);
ctx->data_device_manager = data_device_manager;
if (ctx->xwayland) {
data_device_manager->internal =
wl_registry_bind(registry, id, &wl_data_device_manager_interface,
data_device_manager->version);
} else {
data_device_manager->host_global =
sl_data_device_manager_global_create(ctx);
}
} else if (strcmp(interface, "zxdg_shell_v6") == 0) {
struct sl_xdg_shell* xdg_shell = malloc(sizeof(struct sl_xdg_shell));
assert(xdg_shell);
xdg_shell->ctx = ctx;
xdg_shell->id = id;
xdg_shell->internal = NULL;
xdg_shell->host_global = NULL;
assert(!ctx->xdg_shell);
ctx->xdg_shell = xdg_shell;
if (ctx->xwayland) {
xdg_shell->internal =
wl_registry_bind(registry, id, &zxdg_shell_v6_interface, 1);
zxdg_shell_v6_add_listener(xdg_shell->internal,
&sl_internal_xdg_shell_listener, NULL);
} else {
xdg_shell->host_global = sl_xdg_shell_global_create(ctx);
}
} else if (strcmp(interface, "zaura_shell") == 0) {
if (version >= MIN_AURA_SHELL_VERSION) {
struct sl_aura_shell* aura_shell = malloc(sizeof(struct sl_aura_shell));
assert(aura_shell);
aura_shell->ctx = ctx;
aura_shell->id = id;
aura_shell->version = MIN(MIN_AURA_SHELL_VERSION, version);
aura_shell->host_gtk_shell_global = NULL;
aura_shell->internal = wl_registry_bind(
registry, id, &zaura_shell_interface, aura_shell->version);
assert(!ctx->aura_shell);
ctx->aura_shell = aura_shell;
aura_shell->host_gtk_shell_global = sl_gtk_shell_global_create(ctx);
}
} else if (strcmp(interface, "wp_viewporter") == 0) {
struct sl_viewporter* viewporter = malloc(sizeof(struct sl_viewporter));
assert(viewporter);
viewporter->ctx = ctx;
viewporter->id = id;
viewporter->host_viewporter_global = NULL;
viewporter->internal =
wl_registry_bind(registry, id, &wp_viewporter_interface, 1);
assert(!ctx->viewporter);
ctx->viewporter = viewporter;
viewporter->host_viewporter_global = sl_viewporter_global_create(ctx);
// Allow non-integer scale.
ctx->scale = MIN(MAX_SCALE, MAX(MIN_SCALE, ctx->desired_scale));
} else if (strcmp(interface, "zwp_linux_dmabuf_v1") == 0) {
struct sl_linux_dmabuf* linux_dmabuf =
malloc(sizeof(struct sl_linux_dmabuf));
assert(linux_dmabuf);
linux_dmabuf->ctx = ctx;
linux_dmabuf->id = id;
linux_dmabuf->version = MIN(2, version);
linux_dmabuf->internal = wl_registry_bind(
registry, id, &zwp_linux_dmabuf_v1_interface, linux_dmabuf->version);
assert(!ctx->linux_dmabuf);
ctx->linux_dmabuf = linux_dmabuf;
linux_dmabuf->host_drm_global = sl_drm_global_create(ctx);
} else if (strcmp(interface, "zcr_keyboard_extension_v1") == 0) {
struct sl_keyboard_extension* keyboard_extension =
malloc(sizeof(struct sl_keyboard_extension));
assert(keyboard_extension);
keyboard_extension->ctx = ctx;
keyboard_extension->id = id;
keyboard_extension->internal =
wl_registry_bind(registry, id, &zcr_keyboard_extension_v1_interface, 1);
assert(!ctx->keyboard_extension);
ctx->keyboard_extension = keyboard_extension;
} else if (strcmp(interface, "zwp_text_input_manager_v1") == 0) {
struct sl_text_input_manager* text_input_manager =
malloc(sizeof(struct sl_text_input_manager));
assert(text_input_manager);
text_input_manager->ctx = ctx;
text_input_manager->id = id;
text_input_manager->internal =
wl_registry_bind(registry, id, &zwp_text_input_manager_v1_interface, 1);
text_input_manager->host_global = sl_text_input_manager_global_create(ctx);
assert(!ctx->text_input_manager);
ctx->text_input_manager = text_input_manager;
}
}
static void sl_registry_remover(void* data,
struct wl_registry* registry,
uint32_t id) {
struct sl_context* ctx = (struct sl_context*)data;
struct sl_output* output;
struct sl_seat* seat;
if (ctx->compositor && ctx->compositor->id == id) {
sl_global_destroy(ctx->compositor->host_global);
wl_compositor_destroy(ctx->compositor->internal);
free(ctx->compositor);
ctx->compositor = NULL;
return;
}
if (ctx->subcompositor && ctx->subcompositor->id == id) {
sl_global_destroy(ctx->subcompositor->host_global);
wl_shm_destroy(ctx->shm->internal);
free(ctx->subcompositor);
ctx->subcompositor = NULL;
return;
}
if (ctx->shm && ctx->shm->id == id) {
sl_global_destroy(ctx->shm->host_global);
free(ctx->shm);
ctx->shm = NULL;
return;
}
if (ctx->shell && ctx->shell->id == id) {
sl_global_destroy(ctx->shell->host_global);
free(ctx->shell);
ctx->shell = NULL;
return;
}
if (ctx->data_device_manager && ctx->data_device_manager->id == id) {
if (ctx->data_device_manager->host_global)
sl_global_destroy(ctx->data_device_manager->host_global);
if (ctx->data_device_manager->internal)
wl_data_device_manager_destroy(ctx->data_device_manager->internal);
free(ctx->data_device_manager);
ctx->data_device_manager = NULL;
return;
}
if (ctx->xdg_shell && ctx->xdg_shell->id == id) {
if (ctx->xdg_shell->host_global)
sl_global_destroy(ctx->xdg_shell->host_global);
if (ctx->xdg_shell->internal)
zxdg_shell_v6_destroy(ctx->xdg_shell->internal);
free(ctx->xdg_shell);
ctx->xdg_shell = NULL;
return;
}
if (ctx->aura_shell && ctx->aura_shell->id == id) {
if (ctx->aura_shell->host_gtk_shell_global)
sl_global_destroy(ctx->aura_shell->host_gtk_shell_global);
zaura_shell_destroy(ctx->aura_shell->internal);
free(ctx->aura_shell);
ctx->aura_shell = NULL;
return;
}
if (ctx->viewporter && ctx->viewporter->id == id) {
if (ctx->viewporter->host_viewporter_global)
sl_global_destroy(ctx->viewporter->host_viewporter_global);
wp_viewporter_destroy(ctx->viewporter->internal);
free(ctx->viewporter);
ctx->viewporter = NULL;
return;
}
if (ctx->linux_dmabuf && ctx->linux_dmabuf->id == id) {
if (ctx->linux_dmabuf->host_drm_global)
sl_global_destroy(ctx->linux_dmabuf->host_drm_global);
zwp_linux_dmabuf_v1_destroy(ctx->linux_dmabuf->internal);
free(ctx->linux_dmabuf);
ctx->linux_dmabuf = NULL;
return;
}
if (ctx->keyboard_extension && ctx->keyboard_extension->id == id) {
zcr_keyboard_extension_v1_destroy(ctx->keyboard_extension->internal);
free(ctx->keyboard_extension);
ctx->keyboard_extension = NULL;
return;
}
if (ctx->text_input_manager && ctx->text_input_manager->id == id) {
sl_global_destroy(ctx->text_input_manager->host_global);
free(ctx->text_input_manager);
ctx->text_input_manager = NULL;
return;
}
if (ctx->relative_pointer_manager &&
ctx->relative_pointer_manager->id == id) {
sl_global_destroy(ctx->relative_pointer_manager->host_global);
free(ctx->relative_pointer_manager);
ctx->relative_pointer_manager = NULL;
return;
}
wl_list_for_each(output, &ctx->outputs, link) {
if (output->id == id) {
sl_global_destroy(output->host_global);
wl_list_remove(&output->link);
free(output);
return;
}
}
wl_list_for_each(seat, &ctx->seats, link) {
if (seat->id == id) {
sl_global_destroy(seat->host_global);
wl_list_remove(&seat->link);
free(seat);
return;
}
}
// Not reached.
assert(0);
}
static const struct wl_registry_listener sl_registry_listener = {
sl_registry_handler, sl_registry_remover};
static int sl_handle_event(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = (struct sl_context*)data;
int count = 0;
if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR)) {
wl_client_flush(ctx->client);
exit(EXIT_SUCCESS);
}
if (mask & WL_EVENT_READABLE)
count = wl_display_dispatch(ctx->display);
if (mask & WL_EVENT_WRITABLE)
wl_display_flush(ctx->display);
if (mask == 0) {
count = wl_display_dispatch_pending(ctx->display);
wl_display_flush(ctx->display);
}
return count;
}
static void sl_create_window(struct sl_context* ctx,
xcb_window_t id,
int x,
int y,
int width,
int height,
int border_width) {
struct sl_window* window = malloc(sizeof(struct sl_window));
uint32_t values[1];
assert(window);
window->ctx = ctx;
window->id = id;
window->frame_id = XCB_WINDOW_NONE;
window->host_surface_id = 0;
window->unpaired = 1;
window->x = x;
window->y = y;
window->width = width;
window->height = height;
window->border_width = border_width;
window->depth = 0;
window->managed = 0;
window->realized = 0;
window->activated = 0;
window->allow_resize = 1;
window->transient_for = XCB_WINDOW_NONE;
window->client_leader = XCB_WINDOW_NONE;
window->decorated = 0;
window->name = NULL;
window->clazz = NULL;
window->startup_id = NULL;
window->dark_frame = 0;
window->size_flags = P_POSITION;
window->min_width = 0;
window->min_height = 0;
window->max_width = 0;
window->max_height = 0;
window->xdg_surface = NULL;
window->xdg_toplevel = NULL;
window->xdg_popup = NULL;
window->aura_surface = NULL;
window->next_config.serial = 0;
window->next_config.mask = 0;
window->next_config.states_length = 0;
window->pending_config.serial = 0;
window->pending_config.mask = 0;
window->pending_config.states_length = 0;
wl_list_insert(&ctx->unpaired_windows, &window->link);
values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE | XCB_EVENT_MASK_FOCUS_CHANGE;
xcb_change_window_attributes(ctx->connection, window->id, XCB_CW_EVENT_MASK,
values);
}
static void sl_destroy_window(struct sl_window* window) {
if (window->frame_id != XCB_WINDOW_NONE)
xcb_destroy_window(window->ctx->connection, window->frame_id);
if (window->ctx->host_focus_window == window) {
window->ctx->host_focus_window = NULL;
window->ctx->needs_set_input_focus = 1;
}
if (window->xdg_popup)
zxdg_popup_v6_destroy(window->xdg_popup);
if (window->xdg_toplevel)
zxdg_toplevel_v6_destroy(window->xdg_toplevel);
if (window->xdg_surface)
zxdg_surface_v6_destroy(window->xdg_surface);
if (window->aura_surface)
zaura_surface_destroy(window->aura_surface);
if (window->name)
free(window->name);
if (window->clazz)
free(window->clazz);
if (window->startup_id)
free(window->startup_id);
wl_list_remove(&window->link);
free(window);
}
static int sl_is_window(struct sl_window* window, xcb_window_t id) {
if (window->id == id)
return 1;
if (window->frame_id != XCB_WINDOW_NONE) {
if (window->frame_id == id)
return 1;
}
return 0;
}
static struct sl_window* sl_lookup_window(struct sl_context* ctx,
xcb_window_t id) {
struct sl_window* window;
wl_list_for_each(window, &ctx->windows, link) {
if (sl_is_window(window, id))
return window;
}
wl_list_for_each(window, &ctx->unpaired_windows, link) {
if (sl_is_window(window, id))
return window;
}
return NULL;
}
static int sl_is_our_window(struct sl_context* ctx, xcb_window_t id) {
const xcb_setup_t* setup = xcb_get_setup(ctx->connection);
return (id & ~setup->resource_id_mask) == setup->resource_id_base;
}
static void sl_handle_create_notify(struct sl_context* ctx,
xcb_create_notify_event_t* event) {
if (sl_is_our_window(ctx, event->window))
return;
sl_create_window(ctx, event->window, event->x, event->y, event->width,
event->height, event->border_width);
}
static void sl_handle_destroy_notify(struct sl_context* ctx,
xcb_destroy_notify_event_t* event) {
struct sl_window* window;
if (sl_is_our_window(ctx, event->window))
return;
window = sl_lookup_window(ctx, event->window);
if (!window)
return;
sl_destroy_window(window);
}
static void sl_handle_reparent_notify(struct sl_context* ctx,
xcb_reparent_notify_event_t* event) {
struct sl_window* window;
if (event->parent == ctx->screen->root) {
int width = 1;
int height = 1;
int border_width = 0;
// Return early if window is already tracked. This happens when we
// reparent an unampped window back to the root window.
window = sl_lookup_window(ctx, event->window);
if (window)
return;
xcb_get_geometry_reply_t* geometry_reply = xcb_get_geometry_reply(
ctx->connection, xcb_get_geometry(ctx->connection, event->window),
NULL);
if (geometry_reply) {
width = geometry_reply->width;
height = geometry_reply->height;
border_width = geometry_reply->border_width;
free(geometry_reply);
}
sl_create_window(ctx, event->window, event->x, event->y, width, height,
border_width);
return;
}
if (sl_is_our_window(ctx, event->parent))
return;
window = sl_lookup_window(ctx, event->window);
if (!window)
return;
sl_destroy_window(window);
}
static void sl_handle_map_request(struct sl_context* ctx,
xcb_map_request_event_t* event) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
struct {
int type;
xcb_atom_t atom;
} properties[] = {
{PROPERTY_WM_NAME, XCB_ATOM_WM_NAME},
{PROPERTY_WM_CLASS, XCB_ATOM_WM_CLASS},
{PROPERTY_WM_TRANSIENT_FOR, XCB_ATOM_WM_TRANSIENT_FOR},
{PROPERTY_WM_NORMAL_HINTS, XCB_ATOM_WM_NORMAL_HINTS},
{PROPERTY_WM_CLIENT_LEADER, ctx->atoms[ATOM_WM_CLIENT_LEADER].value},
{PROPERTY_MOTIF_WM_HINTS, ctx->atoms[ATOM_MOTIF_WM_HINTS].value},
{PROPERTY_NET_STARTUP_ID, ctx->atoms[ATOM_NET_STARTUP_ID].value},
{PROPERTY_GTK_THEME_VARIANT, ctx->atoms[ATOM_GTK_THEME_VARIANT].value},
};
xcb_get_geometry_cookie_t geometry_cookie;
xcb_get_property_cookie_t property_cookies[ARRAY_SIZE(properties)];
struct sl_wm_size_hints size_hints = {0};
struct sl_mwm_hints mwm_hints = {0};
uint32_t values[5];
int i;
if (!window)
return;
assert(!sl_is_our_window(ctx, event->window));
window->managed = 1;
if (window->frame_id == XCB_WINDOW_NONE)
geometry_cookie = xcb_get_geometry(ctx->connection, window->id);
for (i = 0; i < ARRAY_SIZE(properties); ++i) {
property_cookies[i] =
xcb_get_property(ctx->connection, 0, window->id, properties[i].atom,
XCB_ATOM_ANY, 0, 2048);
}
if (window->frame_id == XCB_WINDOW_NONE) {
xcb_get_geometry_reply_t* geometry_reply =
xcb_get_geometry_reply(ctx->connection, geometry_cookie, NULL);
if (geometry_reply) {
window->x = geometry_reply->x;
window->y = geometry_reply->y;
window->width = geometry_reply->width;
window->height = geometry_reply->height;
window->depth = geometry_reply->depth;
free(geometry_reply);
}
}
free(window->name);
window->name = NULL;
free(window->clazz);
window->clazz = NULL;
free(window->startup_id);
window->startup_id = NULL;
window->transient_for = XCB_WINDOW_NONE;
window->client_leader = XCB_WINDOW_NONE;
window->decorated = 1;
window->size_flags = 0;
window->dark_frame = 0;
for (i = 0; i < ARRAY_SIZE(properties); ++i) {
xcb_get_property_reply_t* reply =
xcb_get_property_reply(ctx->connection, property_cookies[i], NULL);
if (!reply)
continue;
if (reply->type == XCB_ATOM_NONE) {
free(reply);
continue;
}
switch (properties[i].type) {
case PROPERTY_WM_NAME:
window->name = strndup(xcb_get_property_value(reply),
xcb_get_property_value_length(reply));
break;
case PROPERTY_WM_CLASS: {
// WM_CLASS property contains two consecutive null-terminated strings.
// These specify the Instance and Class names. If a global app ID is
// not set then use Class name for app ID.
const char *value = xcb_get_property_value(reply);
int value_length = xcb_get_property_value_length(reply);
int instance_length = strnlen(value, value_length);
if (value_length > instance_length) {
window->clazz = strndup(value + instance_length + 1,
value_length - instance_length - 1);
}
} break;
case PROPERTY_WM_TRANSIENT_FOR:
if (xcb_get_property_value_length(reply) >= 4)
window->transient_for = *((uint32_t *)xcb_get_property_value(reply));
break;
case PROPERTY_WM_NORMAL_HINTS:
if (xcb_get_property_value_length(reply) >= sizeof(size_hints))
memcpy(&size_hints, xcb_get_property_value(reply), sizeof(size_hints));
break;
case PROPERTY_WM_CLIENT_LEADER:
if (xcb_get_property_value_length(reply) >= 4)
window->client_leader = *((uint32_t *)xcb_get_property_value(reply));
break;
case PROPERTY_MOTIF_WM_HINTS:
if (xcb_get_property_value_length(reply) >= sizeof(mwm_hints))
memcpy(&mwm_hints, xcb_get_property_value(reply), sizeof(mwm_hints));
break;
case PROPERTY_NET_STARTUP_ID:
window->startup_id = strndup(xcb_get_property_value(reply),
xcb_get_property_value_length(reply));
break;
case PROPERTY_GTK_THEME_VARIANT:
if (xcb_get_property_value_length(reply) >= 4)
window->dark_frame = !strcmp(xcb_get_property_value(reply), "dark");
break;
default:
break;
}
free(reply);
}
if (mwm_hints.flags & MWM_HINTS_DECORATIONS) {
if (mwm_hints.decorations & MWM_DECOR_ALL)
window->decorated = ~mwm_hints.decorations & MWM_DECOR_TITLE;
else
window->decorated = mwm_hints.decorations & MWM_DECOR_TITLE;
}
// Allow user/program controlled position for transients.
if (window->transient_for)
window->size_flags |= size_hints.flags & (US_POSITION | P_POSITION);
// If startup ID is not set, then try the client leader window.
if (!window->startup_id && window->client_leader) {
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 0, window->client_leader,
ctx->atoms[ATOM_NET_STARTUP_ID].value, XCB_ATOM_ANY, 0,
2048),
NULL);
if (reply) {
if (reply->type != XCB_ATOM_NONE) {
window->startup_id = strndup(xcb_get_property_value(reply),
xcb_get_property_value_length(reply));
}
free(reply);
}
}
window->size_flags |= size_hints.flags & (P_MIN_SIZE | P_MAX_SIZE);
if (window->size_flags & P_MIN_SIZE) {
window->min_width = size_hints.min_width;
window->min_height = size_hints.min_height;
}
if (window->size_flags & P_MAX_SIZE) {
window->max_width = size_hints.max_width;
window->max_height = size_hints.max_height;
}
window->border_width = 0;
sl_adjust_window_size_for_screen_size(window);
if (!(window->size_flags & (US_POSITION | P_POSITION)))
sl_adjust_window_position_for_screen_size(window);
values[0] = window->width;
values[1] = window->height;
values[2] = 0;
xcb_configure_window(ctx->connection, window->id,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
XCB_CONFIG_WINDOW_BORDER_WIDTH,
values);
// This needs to match the frame extents of the X11 frame window used
// for reparenting or applications tend to be confused. The actual window
// frame size used by the host compositor can be different.
values[0] = 0;
values[1] = 0;
values[2] = 0;
values[3] = 0;
xcb_change_property(ctx->connection, XCB_PROP_MODE_REPLACE, window->id,
ctx->atoms[ATOM_NET_FRAME_EXTENTS].value,
XCB_ATOM_CARDINAL, 32, 4, values);
// Remove weird gravities.
values[0] = XCB_GRAVITY_NORTH_WEST;
xcb_change_window_attributes(ctx->connection, window->id, XCB_CW_WIN_GRAVITY,
values);
if (window->frame_id == XCB_WINDOW_NONE) {
int depth = window->depth ? window->depth : ctx->screen->root_depth;
values[0] = ctx->screen->black_pixel;
values[1] = XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
values[2] = ctx->colormaps[depth];
window->frame_id = xcb_generate_id(ctx->connection);
xcb_create_window(
ctx->connection, depth, window->frame_id, ctx->screen->root, window->x,
window->y, window->width, window->height, 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT, ctx->visual_ids[depth],
XCB_CW_BORDER_PIXEL | XCB_CW_EVENT_MASK | XCB_CW_COLORMAP, values);
values[0] = XCB_STACK_MODE_BELOW;
xcb_configure_window(ctx->connection, window->frame_id,
XCB_CONFIG_WINDOW_STACK_MODE, values);
xcb_reparent_window(ctx->connection, window->id, window->frame_id, 0, 0);
} else {
values[0] = window->x;
values[1] = window->y;
values[2] = window->width;
values[3] = window->height;
values[4] = XCB_STACK_MODE_BELOW;
xcb_configure_window(
ctx->connection, window->frame_id,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH |
XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_STACK_MODE,
values);
}
sl_window_set_wm_state(window, WM_STATE_NORMAL);
sl_send_configure_notify(window);
xcb_map_window(ctx->connection, window->id);
xcb_map_window(ctx->connection, window->frame_id);
}
static void sl_handle_map_notify(struct sl_context* ctx,
xcb_map_notify_event_t* event) {}
static void sl_handle_unmap_notify(struct sl_context* ctx,
xcb_unmap_notify_event_t* event) {
struct sl_window* window;
if (sl_is_our_window(ctx, event->window))
return;
if (event->response_type & SEND_EVENT_MASK)
return;
window = sl_lookup_window(ctx, event->window);
if (!window)
return;
if (ctx->host_focus_window == window) {
ctx->host_focus_window = NULL;
ctx->needs_set_input_focus = 1;
}
if (window->host_surface_id) {
window->host_surface_id = 0;
sl_window_update(window);
}
sl_window_set_wm_state(window, WM_STATE_WITHDRAWN);
// Reparent window and destroy frame if it exists.
if (window->frame_id != XCB_WINDOW_NONE) {
xcb_reparent_window(ctx->connection, window->id, ctx->screen->root,
window->x, window->y);
xcb_destroy_window(ctx->connection, window->frame_id);
window->frame_id = XCB_WINDOW_NONE;
}
// Reset properties to unmanaged state in case the window transitions to
// an override-redirect window.
window->managed = 0;
window->decorated = 0;
window->size_flags = P_POSITION;
}
static void sl_handle_configure_request(struct sl_context* ctx,
xcb_configure_request_event_t* event) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
int width = window->width;
int height = window->height;
uint32_t values[7];
assert(!sl_is_our_window(ctx, event->window));
if (!window->managed) {
int i = 0;
if (event->value_mask & XCB_CONFIG_WINDOW_X)
values[i++] = event->x;
if (event->value_mask & XCB_CONFIG_WINDOW_Y)
values[i++] = event->y;
if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH)
values[i++] = event->width;
if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
values[i++] = event->height;
if (event->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
values[i++] = event->border_width;
if (event->value_mask & XCB_CONFIG_WINDOW_SIBLING)
values[i++] = event->sibling;
if (event->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
values[i++] = event->stack_mode;
xcb_configure_window(ctx->connection, window->id, event->value_mask,
values);
return;
}
// Ack configure events as satisfying request removes the guarantee
// that matching contents will arrive.
if (window->xdg_toplevel) {
if (window->pending_config.serial) {
zxdg_surface_v6_ack_configure(window->xdg_surface,
window->pending_config.serial);
window->pending_config.serial = 0;
window->pending_config.mask = 0;
window->pending_config.states_length = 0;
}
if (window->next_config.serial) {
zxdg_surface_v6_ack_configure(window->xdg_surface,
window->next_config.serial);
window->next_config.serial = 0;
window->next_config.mask = 0;
window->next_config.states_length = 0;
}
}
if (event->value_mask & XCB_CONFIG_WINDOW_X)
window->x = event->x;
if (event->value_mask & XCB_CONFIG_WINDOW_Y)
window->y = event->y;
if (window->allow_resize) {
if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH)
window->width = event->width;
if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
window->height = event->height;
}
sl_adjust_window_size_for_screen_size(window);
if (window->size_flags & (US_POSITION | P_POSITION))
sl_window_update(window);
else
sl_adjust_window_position_for_screen_size(window);
values[0] = window->x;
values[1] = window->y;
values[2] = window->width;
values[3] = window->height;
values[4] = 0;
xcb_configure_window(ctx->connection, window->frame_id,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y |
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT,
values);
// We need to send a synthetic configure notify if:
// - Not changing the size, location, border width.
// - Moving the window without resizing it or changing its border width.
if (width != window->width || height != window->height ||
window->border_width) {
xcb_configure_window(ctx->connection, window->id,
XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT |
XCB_CONFIG_WINDOW_BORDER_WIDTH,
&values[2]);
window->border_width = 0;
} else {
sl_send_configure_notify(window);
}
}
static void sl_handle_configure_notify(struct sl_context* ctx,
xcb_configure_notify_event_t* event) {
struct sl_window* window;
if (sl_is_our_window(ctx, event->window))
return;
if (event->window == ctx->screen->root) {
xcb_get_geometry_reply_t* geometry_reply = xcb_get_geometry_reply(
ctx->connection, xcb_get_geometry(ctx->connection, event->window),
NULL);
int width = ctx->screen->width_in_pixels;
int height = ctx->screen->height_in_pixels;
if (geometry_reply) {
width = geometry_reply->width;
height = geometry_reply->height;
free(geometry_reply);
}
if (width == ctx->screen->width_in_pixels ||
height == ctx->screen->height_in_pixels) {
return;
}
ctx->screen->width_in_pixels = width;
ctx->screen->height_in_pixels = height;
// Re-center managed windows.
wl_list_for_each(window, &ctx->windows, link) {
int x, y;
if (window->size_flags & (US_POSITION | P_POSITION))
continue;
x = window->x;
y = window->y;
sl_adjust_window_position_for_screen_size(window);
if (window->x != x || window->y != y) {
uint32_t values[2];
values[0] = window->x;
values[1] = window->y;
xcb_configure_window(ctx->connection, window->frame_id,
XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values);
sl_send_configure_notify(window);
}
}
return;
}
window = sl_lookup_window(ctx, event->window);
if (!window)
return;
if (window->managed)
return;
window->width = event->width;
window->height = event->height;
window->border_width = event->border_width;
if (event->x != window->x || event->y != window->y) {
window->x = event->x;
window->y = event->y;
sl_window_update(window);
}
}
static uint32_t sl_resize_edge(int net_wm_moveresize_size) {
switch (net_wm_moveresize_size) {
case NET_WM_MOVERESIZE_SIZE_TOPLEFT:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_TOP_LEFT;
case NET_WM_MOVERESIZE_SIZE_TOP:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_TOP;
case NET_WM_MOVERESIZE_SIZE_TOPRIGHT:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_TOP_RIGHT;
case NET_WM_MOVERESIZE_SIZE_RIGHT:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_RIGHT;
case NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_BOTTOM_RIGHT;
case NET_WM_MOVERESIZE_SIZE_BOTTOM:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_BOTTOM;
case NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_BOTTOM_LEFT;
case NET_WM_MOVERESIZE_SIZE_LEFT:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_LEFT;
default:
return ZXDG_TOPLEVEL_V6_RESIZE_EDGE_NONE;
}
}
static void sl_handle_client_message(struct sl_context* ctx,
xcb_client_message_event_t* event) {
if (event->type == ctx->atoms[ATOM_WL_SURFACE_ID].value) {
struct sl_window *window, *unpaired_window = NULL;
wl_list_for_each(window, &ctx->unpaired_windows, link) {
if (sl_is_window(window, event->window)) {
unpaired_window = window;
break;
}
}
if (unpaired_window) {
unpaired_window->host_surface_id = event->data.data32[0];
sl_window_update(unpaired_window);
}
} else if (event->type == ctx->atoms[ATOM_NET_WM_MOVERESIZE].value) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
if (window && window->xdg_toplevel) {
struct sl_host_seat* seat = window->ctx->default_seat;
if (!seat)
return;
if (event->data.data32[2] == NET_WM_MOVERESIZE_MOVE) {
zxdg_toplevel_v6_move(window->xdg_toplevel, seat->proxy,
seat->seat->last_serial);
} else {
uint32_t edge = sl_resize_edge(event->data.data32[2]);
if (edge == ZXDG_TOPLEVEL_V6_RESIZE_EDGE_NONE)
return;
zxdg_toplevel_v6_resize(window->xdg_toplevel, seat->proxy,
seat->seat->last_serial, edge);
}
}
} else if (event->type == ctx->atoms[ATOM_NET_WM_STATE].value) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
if (window && window->xdg_toplevel) {
int changed[ATOM_LAST + 1];
uint32_t action = event->data.data32[0];
int i;
for (i = 0; i < ARRAY_SIZE(ctx->atoms); ++i) {
changed[i] = event->data.data32[1] == ctx->atoms[i].value ||
event->data.data32[2] == ctx->atoms[i].value;
}
if (changed[ATOM_NET_WM_STATE_FULLSCREEN]) {
if (action == NET_WM_STATE_ADD)
zxdg_toplevel_v6_set_fullscreen(window->xdg_toplevel, NULL);
else if (action == NET_WM_STATE_REMOVE)
zxdg_toplevel_v6_unset_fullscreen(window->xdg_toplevel);
}
if (changed[ATOM_NET_WM_STATE_MAXIMIZED_VERT] &&
changed[ATOM_NET_WM_STATE_MAXIMIZED_HORZ]) {
if (action == NET_WM_STATE_ADD)
zxdg_toplevel_v6_set_maximized(window->xdg_toplevel);
else if (action == NET_WM_STATE_REMOVE)
zxdg_toplevel_v6_unset_maximized(window->xdg_toplevel);
}
}
} else if (event->type == ctx->atoms[ATOM_WM_CHANGE_STATE].value &&
event->data.data32[0] == WM_STATE_ICONIC) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
if (window && window->xdg_toplevel) {
zxdg_toplevel_v6_set_minimized(window->xdg_toplevel);
}
}
}
static void sl_handle_focus_in(struct sl_context* ctx,
xcb_focus_in_event_t* event) {
struct sl_window* window = sl_lookup_window(ctx, event->event);
if (window && window->transient_for != XCB_WINDOW_NONE) {
// Set our parent now as it might not have been set properly when the
// window was realized.
struct sl_window* parent = sl_lookup_window(ctx, window->transient_for);
if (parent && parent->xdg_toplevel && window->xdg_toplevel)
zxdg_toplevel_v6_set_parent(window->xdg_toplevel, parent->xdg_toplevel);
}
}
static void sl_handle_focus_out(struct sl_context* ctx,
xcb_focus_out_event_t* event) {}
int sl_begin_data_source_send(struct sl_context* ctx,
int fd,
xcb_intern_atom_cookie_t cookie,
struct sl_data_source* data_source) {
xcb_intern_atom_reply_t* reply =
xcb_intern_atom_reply(ctx->connection, cookie, NULL);
if (!reply) {
close(fd);
return 0;
}
int flags, rv;
xcb_convert_selection(ctx->connection, ctx->selection_window,
ctx->atoms[ATOM_CLIPBOARD].value, reply->atom,
ctx->atoms[ATOM_WL_SELECTION].value, XCB_CURRENT_TIME);
flags = fcntl(fd, F_GETFL, 0);
rv = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
assert(!rv);
UNUSED(rv);
ctx->selection_data_source_send_fd = fd;
free(reply);
return 1;
}
void sl_process_data_source_send_pending_list(struct sl_context* ctx) {
while (!wl_list_empty(&ctx->selection_data_source_send_pending)) {
struct wl_list* next = ctx->selection_data_source_send_pending.next;
struct sl_data_source_send_request* request;
request = wl_container_of(next, request, link);
wl_list_remove(next);
int rv = sl_begin_data_source_send(ctx, request->fd, request->cookie,
request->data_source);
free(request);
if (rv)
break;
}
}
static int sl_handle_selection_fd_writable(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = data;
uint8_t *value;
int bytes, bytes_left;
value = xcb_get_property_value(ctx->selection_property_reply);
bytes_left = xcb_get_property_value_length(ctx->selection_property_reply) -
ctx->selection_property_offset;
bytes = write(fd, value + ctx->selection_property_offset, bytes_left);
if (bytes == -1) {
fprintf(stderr, "write error to target fd: %m\n");
close(fd);
fd = -1;
} else if (bytes == bytes_left) {
if (ctx->selection_incremental_transfer) {
xcb_delete_property(ctx->connection, ctx->selection_window,
ctx->atoms[ATOM_WL_SELECTION].value);
} else {
close(fd);
fd = -1;
}
} else {
ctx->selection_property_offset += bytes;
return 1;
}
free(ctx->selection_property_reply);
ctx->selection_property_reply = NULL;
if (ctx->selection_send_event_source) {
wl_event_source_remove(ctx->selection_send_event_source);
ctx->selection_send_event_source = NULL;
}
if (fd < 0) {
ctx->selection_data_source_send_fd = -1;
sl_process_data_source_send_pending_list(ctx);
}
return 1;
}
static void sl_write_selection_property(struct sl_context* ctx,
xcb_get_property_reply_t* reply) {
ctx->selection_property_offset = 0;
ctx->selection_property_reply = reply;
sl_handle_selection_fd_writable(ctx->selection_data_source_send_fd,
WL_EVENT_WRITABLE, ctx);
if (!ctx->selection_property_reply)
return;
assert(!ctx->selection_send_event_source);
ctx->selection_send_event_source = wl_event_loop_add_fd(
wl_display_get_event_loop(ctx->host_display),
ctx->selection_data_source_send_fd, WL_EVENT_WRITABLE,
sl_handle_selection_fd_writable, ctx);
}
static void sl_send_selection_notify(struct sl_context* ctx,
xcb_atom_t property) {
xcb_selection_notify_event_t event = {
.response_type = XCB_SELECTION_NOTIFY,
.sequence = 0,
.time = ctx->selection_request.time,
.requestor = ctx->selection_request.requestor,
.selection = ctx->selection_request.selection,
.target = ctx->selection_request.target,
.property = property,
.pad0 = 0};
xcb_send_event(ctx->connection, 0, ctx->selection_request.requestor,
XCB_EVENT_MASK_NO_EVENT, (char*)&event);
}
static void sl_send_selection_data(struct sl_context* ctx) {
assert(!ctx->selection_data_ack_pending);
xcb_change_property(
ctx->connection, XCB_PROP_MODE_REPLACE, ctx->selection_request.requestor,
ctx->selection_request.property, ctx->selection_data_type,
/*format=*/8, ctx->selection_data.size, ctx->selection_data.data);
ctx->selection_data_ack_pending = 1;
ctx->selection_data.size = 0;
}
static const uint32_t sl_incr_chunk_size = 64 * 1024;
static int sl_handle_selection_fd_readable(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = data;
int bytes, offset, bytes_left;
void *p;
offset = ctx->selection_data.size;
if (ctx->selection_data.size < sl_incr_chunk_size)
p = wl_array_add(&ctx->selection_data, sl_incr_chunk_size);
else
p = (char*)ctx->selection_data.data + ctx->selection_data.size;
bytes_left = ctx->selection_data.alloc - offset;
bytes = read(fd, p, bytes_left);
if (bytes == -1) {
fprintf(stderr, "read error from data source: %m\n");
sl_send_selection_notify(ctx, XCB_ATOM_NONE);
ctx->selection_data_offer_receive_fd = -1;
close(fd);
} else {
ctx->selection_data.size = offset + bytes;
if (ctx->selection_data.size >= sl_incr_chunk_size) {
if (!ctx->selection_incremental_transfer) {
ctx->selection_incremental_transfer = 1;
xcb_change_property(
ctx->connection, XCB_PROP_MODE_REPLACE,
ctx->selection_request.requestor, ctx->selection_request.property,
ctx->atoms[ATOM_INCR].value, 32, 1, &sl_incr_chunk_size);
ctx->selection_data_ack_pending = 1;
sl_send_selection_notify(ctx, ctx->selection_request.property);
} else if (!ctx->selection_data_ack_pending) {
sl_send_selection_data(ctx);
}
} else if (bytes == 0) {
if (!ctx->selection_data_ack_pending)
sl_send_selection_data(ctx);
if (!ctx->selection_incremental_transfer) {
sl_send_selection_notify(ctx, ctx->selection_request.property);
ctx->selection_request.requestor = XCB_NONE;
wl_array_release(&ctx->selection_data);
}
xcb_flush(ctx->connection);
ctx->selection_data_offer_receive_fd = -1;
close(fd);
} else {
ctx->selection_data.size = offset + bytes;
return 1;
}
}
wl_event_source_remove(ctx->selection_event_source);
ctx->selection_event_source = NULL;
return 1;
}
static void sl_handle_property_notify(struct sl_context* ctx,
xcb_property_notify_event_t* event) {
if (event->atom == XCB_ATOM_WM_NAME) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
if (!window)
return;
if (window->name) {
free(window->name);
window->name = NULL;
}
if (event->state != XCB_PROPERTY_DELETE) {
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 0, window->id, XCB_ATOM_WM_NAME,
XCB_ATOM_ANY, 0, 2048),
NULL);
if (reply) {
window->name = strndup(xcb_get_property_value(reply),
xcb_get_property_value_length(reply));
free(reply);
}
}
if (!window->xdg_toplevel)
return;
if (window->name) {
zxdg_toplevel_v6_set_title(window->xdg_toplevel, window->name);
} else {
zxdg_toplevel_v6_set_title(window->xdg_toplevel, "");
}
} else if (event->atom == XCB_ATOM_WM_NORMAL_HINTS) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
if (!window)
return;
window->size_flags &= ~(P_MIN_SIZE | P_MAX_SIZE);
if (event->state != XCB_PROPERTY_DELETE) {
struct sl_wm_size_hints size_hints = {0};
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 0, window->id,
XCB_ATOM_WM_NORMAL_HINTS, XCB_ATOM_ANY, 0,
sizeof(size_hints)),
NULL);
if (reply) {
memcpy(&size_hints, xcb_get_property_value(reply), sizeof(size_hints));
free(reply);
}
window->size_flags |= size_hints.flags & (P_MIN_SIZE | P_MAX_SIZE);
if (window->size_flags & P_MIN_SIZE) {
window->min_width = size_hints.min_width;
window->min_height = size_hints.min_height;
}
if (window->size_flags & P_MAX_SIZE) {
window->max_width = size_hints.max_width;
window->max_height = size_hints.max_height;
}
}
if (!window->xdg_toplevel)
return;
if (window->size_flags & P_MIN_SIZE) {
zxdg_toplevel_v6_set_min_size(window->xdg_toplevel,
window->min_width / ctx->scale,
window->min_height / ctx->scale);
} else {
zxdg_toplevel_v6_set_min_size(window->xdg_toplevel, 0, 0);
}
if (window->size_flags & P_MAX_SIZE) {
zxdg_toplevel_v6_set_max_size(window->xdg_toplevel,
window->max_width / ctx->scale,
window->max_height / ctx->scale);
} else {
zxdg_toplevel_v6_set_max_size(window->xdg_toplevel, 0, 0);
}
} else if (event->atom == ctx->atoms[ATOM_MOTIF_WM_HINTS].value) {
struct sl_window* window = sl_lookup_window(ctx, event->window);
if (!window)
return;
// Managed windows are decorated by default.
window->decorated = window->managed;
if (event->state != XCB_PROPERTY_DELETE) {
struct sl_mwm_hints mwm_hints = {0};
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 0, window->id,
ctx->atoms[ATOM_MOTIF_WM_HINTS].value, XCB_ATOM_ANY,
0, sizeof(mwm_hints)),
NULL);
if (reply) {
if (mwm_hints.flags & MWM_HINTS_DECORATIONS) {
if (mwm_hints.decorations & MWM_DECOR_ALL)
window->decorated = ~mwm_hints.decorations & MWM_DECOR_TITLE;
else
window->decorated = mwm_hints.decorations & MWM_DECOR_TITLE;
}
}
}
if (!window->aura_surface)
return;
zaura_surface_set_frame(window->aura_surface,
window->decorated
? ZAURA_SURFACE_FRAME_TYPE_NORMAL
: window->depth == 32
? ZAURA_SURFACE_FRAME_TYPE_NONE
: ZAURA_SURFACE_FRAME_TYPE_SHADOW);
} else if (event->atom == ctx->atoms[ATOM_GTK_THEME_VARIANT].value) {
struct sl_window* window;
uint32_t frame_color;
window = sl_lookup_window(ctx, event->window);
if (!window)
return;
window->dark_frame = 0;
if (event->state != XCB_PROPERTY_DELETE) {
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 0, window->id,
ctx->atoms[ATOM_GTK_THEME_VARIANT].value,
XCB_ATOM_ANY, 0, 2048),
NULL);
if (reply) {
if (xcb_get_property_value_length(reply) >= 4)
window->dark_frame = !strcmp(xcb_get_property_value(reply), "dark");
free(reply);
}
}
if (!window->aura_surface)
return;
frame_color = window->dark_frame ? ctx->dark_frame_color : ctx->frame_color;
zaura_surface_set_frame_colors(window->aura_surface, frame_color,
frame_color);
} else if (event->atom == ctx->atoms[ATOM_WL_SELECTION].value) {
if (event->window == ctx->selection_window &&
event->state == XCB_PROPERTY_NEW_VALUE &&
ctx->selection_incremental_transfer) {
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 0, ctx->selection_window,
ctx->atoms[ATOM_WL_SELECTION].value,
XCB_GET_PROPERTY_TYPE_ANY, 0, 0x1fffffff),
NULL);
if (!reply)
return;
if (xcb_get_property_value_length(reply) > 0) {
sl_write_selection_property(ctx, reply);
} else {
assert(!ctx->selection_send_event_source);
close(ctx->selection_data_source_send_fd);
ctx->selection_data_source_send_fd = -1;
free(reply);
sl_process_data_source_send_pending_list(ctx);
}
}
} else if (event->atom == ctx->selection_request.property) {
if (event->window == ctx->selection_request.requestor &&
event->state == XCB_PROPERTY_DELETE &&
ctx->selection_incremental_transfer) {
int data_size = ctx->selection_data.size;
ctx->selection_data_ack_pending = 0;
// Handle the case when there's more data to be received.
if (ctx->selection_data_offer_receive_fd >= 0) {
// Avoid sending empty data until transfer is complete.
if (data_size)
sl_send_selection_data(ctx);
if (!ctx->selection_event_source) {
ctx->selection_event_source = wl_event_loop_add_fd(
wl_display_get_event_loop(ctx->host_display),
ctx->selection_data_offer_receive_fd, WL_EVENT_READABLE,
sl_handle_selection_fd_readable, ctx);
}
return;
}
sl_send_selection_data(ctx);
// Release data if transfer is complete.
if (!data_size) {
ctx->selection_request.requestor = XCB_NONE;
wl_array_release(&ctx->selection_data);
}
}
}
}
static void sl_internal_data_source_target(void* data,
struct wl_data_source* data_source,
const char* mime_type) {}
static void sl_internal_data_source_send(void* data,
struct wl_data_source* data_source,
const char* mime_type,
int32_t fd) {
struct sl_data_source* host = data;
struct sl_context* ctx = host->ctx;
xcb_intern_atom_cookie_t cookie =
xcb_intern_atom(ctx->connection, false, strlen(mime_type), mime_type);
if (ctx->selection_data_source_send_fd < 0) {
sl_begin_data_source_send(ctx, fd, cookie, host);
} else {
struct sl_data_source_send_request* request =
malloc(sizeof(struct sl_data_source_send_request));
request->fd = fd;
request->cookie = cookie;
request->data_source = host;
wl_list_insert(&ctx->selection_data_source_send_pending, &request->link);
}
}
static void sl_internal_data_source_cancelled(
void* data, struct wl_data_source* data_source) {
struct sl_data_source* host = data;
if (host->ctx->selection_data_source == host)
host->ctx->selection_data_source = NULL;
wl_data_source_destroy(data_source);
}
static const struct wl_data_source_listener sl_internal_data_source_listener = {
sl_internal_data_source_target, sl_internal_data_source_send,
sl_internal_data_source_cancelled};
char* sl_copy_atom_name(xcb_get_atom_name_reply_t* reply) {
// The string produced by xcb_get_atom_name_name isn't null terminated, so we
// have to copy |name_len| bytes into a new buffer and add the null character
// ourselves.
char* name_start = xcb_get_atom_name_name(reply);
int name_len = xcb_get_atom_name_name_length(reply);
char* name = malloc(name_len + 1);
memcpy(name, name_start, name_len);
name[name_len] = '\0';
return name;
}
static void sl_get_selection_targets(struct sl_context* ctx) {
struct sl_data_source* data_source = NULL;
xcb_get_property_reply_t *reply;
xcb_atom_t *value;
uint32_t i;
reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 1, ctx->selection_window,
ctx->atoms[ATOM_WL_SELECTION].value,
XCB_GET_PROPERTY_TYPE_ANY, 0, 4096),
NULL);
if (!reply)
return;
if (reply->type != XCB_ATOM_ATOM) {
free(reply);
return;
}
if (ctx->data_device_manager) {
data_source = malloc(sizeof(*data_source));
assert(data_source);
data_source->ctx = ctx;
data_source->internal = wl_data_device_manager_create_data_source(
ctx->data_device_manager->internal);
wl_data_source_add_listener(data_source->internal,
&sl_internal_data_source_listener, data_source);
value = xcb_get_property_value(reply);
// We need to convert all of the offered target types from X11 atoms to
// strings (i.e. getting the names of the atoms). Each conversion requires a
// round trip to the X server, but none of the requests depend on each
// other. Therefore, we can speed things up by sending out all the requests
// as a batch with xcb_get_atom_name, and then read all the replies as a
// batch with xcb_get_atom_name_reply.
xcb_get_atom_name_cookie_t* atom_name_cookies =
malloc(sizeof(xcb_get_atom_name_cookie_t) * reply->value_len);
for (i = 0; i < reply->value_len; i++) {
atom_name_cookies[i] = xcb_get_atom_name(ctx->connection, value[i]);
}
for (i = 0; i < reply->value_len; i++) {
xcb_get_atom_name_reply_t* atom_name_reply =
xcb_get_atom_name_reply(ctx->connection, atom_name_cookies[i], NULL);
if (atom_name_reply) {
char* name = sl_copy_atom_name(atom_name_reply);
wl_data_source_offer(data_source->internal, name);
free(atom_name_reply);
free(name);
}
}
free(atom_name_cookies);
if (ctx->selection_data_device && ctx->default_seat) {
wl_data_device_set_selection(ctx->selection_data_device,
data_source->internal,
ctx->default_seat->seat->last_serial);
}
if (ctx->selection_data_source) {
wl_data_source_destroy(ctx->selection_data_source->internal);
free(ctx->selection_data_source);
}
ctx->selection_data_source = data_source;
}
free(reply);
}
static void sl_get_selection_data(struct sl_context* ctx) {
xcb_get_property_reply_t* reply = xcb_get_property_reply(
ctx->connection,
xcb_get_property(ctx->connection, 1, ctx->selection_window,
ctx->atoms[ATOM_WL_SELECTION].value,
XCB_GET_PROPERTY_TYPE_ANY, 0, 0x1fffffff),
NULL);
if (!reply)
return;
if (reply->type == ctx->atoms[ATOM_INCR].value) {
ctx->selection_incremental_transfer = 1;
free(reply);
} else {
ctx->selection_incremental_transfer = 0;
sl_write_selection_property(ctx, reply);
}
}
static void sl_handle_selection_notify(struct sl_context* ctx,
xcb_selection_notify_event_t* event) {
if (event->property == XCB_ATOM_NONE)
return;
if (event->target == ctx->atoms[ATOM_TARGETS].value)
sl_get_selection_targets(ctx);
else
sl_get_selection_data(ctx);
}
static void sl_send_targets(struct sl_context* ctx) {
xcb_change_property(
ctx->connection, XCB_PROP_MODE_REPLACE, ctx->selection_request.requestor,
ctx->selection_request.property, XCB_ATOM_ATOM, 32,
ctx->selection_data_offer->atoms.size / sizeof(xcb_atom_t),
ctx->selection_data_offer->atoms.data);
sl_send_selection_notify(ctx, ctx->selection_request.property);
}
static void sl_send_timestamp(struct sl_context* ctx) {
xcb_change_property(ctx->connection, XCB_PROP_MODE_REPLACE,
ctx->selection_request.requestor,
ctx->selection_request.property, XCB_ATOM_INTEGER, 32, 1,
&ctx->selection_timestamp);
sl_send_selection_notify(ctx, ctx->selection_request.property);
}
static void sl_send_data(struct sl_context* ctx, xcb_atom_t data_type) {
int rv, fd_to_receive, fd_to_wayland;
if (!ctx->selection_data_offer) {
sl_send_selection_notify(ctx, XCB_ATOM_NONE);
return;
}
if (ctx->selection_event_source) {
fprintf(stderr, "error: selection transfer already pending\n");
sl_send_selection_notify(ctx, XCB_ATOM_NONE);
return;
}
ctx->selection_data_type = data_type;
// We will need the name of this atom later to tell the wayland server what
// type of data to send us, so start the request now.
xcb_get_atom_name_cookie_t atom_name_cookie =
xcb_get_atom_name(ctx->connection, data_type);
wl_array_init(&ctx->selection_data);
ctx->selection_data_ack_pending = 0;
switch (ctx->data_driver) {
case DATA_DRIVER_VIRTWL: {
struct virtwl_ioctl_new new_pipe = {
.type = VIRTWL_IOCTL_NEW_PIPE_READ, .fd = -1, .flags = 0, .size = 0,
};
rv = ioctl(ctx->virtwl_fd, VIRTWL_IOCTL_NEW, &new_pipe);
if (rv) {
fprintf(stderr, "error: failed to create virtwl pipe: %s\n",
strerror(errno));
sl_send_selection_notify(ctx, XCB_ATOM_NONE);
return;
}
fd_to_receive = new_pipe.fd;
fd_to_wayland = new_pipe.fd;
} break;
case DATA_DRIVER_NOOP: {
int p[2];
rv = pipe2(p, O_CLOEXEC | O_NONBLOCK);
assert(!rv);
fd_to_receive = p[0];
fd_to_wayland = p[1];
} break;
}
xcb_get_atom_name_reply_t* atom_name_reply =
xcb_get_atom_name_reply(ctx->connection, atom_name_cookie, NULL);
if (atom_name_reply) {
// If we got the atom name, then send the request to wayland and add our end
// of the pipe to the wayland event loop.
ctx->selection_data_offer_receive_fd = fd_to_receive;
char* name = sl_copy_atom_name(atom_name_reply);
wl_data_offer_receive(ctx->selection_data_offer->internal, name,
fd_to_wayland);
free(atom_name_reply);
free(name);
ctx->selection_event_source = wl_event_loop_add_fd(
wl_display_get_event_loop(ctx->host_display),
ctx->selection_data_offer_receive_fd, WL_EVENT_READABLE,
sl_handle_selection_fd_readable, ctx);
} else {
// If getting the atom name failed, notify the requestor that there won't be
// any data, and close our end of the pipe.
close(fd_to_receive);
sl_send_selection_notify(ctx, XCB_ATOM_NONE);
}
// Close the wayland end of the pipe, now that it's either been sent or not
// going to be sent. The VIRTWL driver uses the same fd for both ends of the
// pipe, so don't close the fd if both ends are the same.
if (fd_to_receive != fd_to_wayland)
close(fd_to_wayland);
}
static void sl_handle_selection_request(struct sl_context* ctx,
xcb_selection_request_event_t* event) {
ctx->selection_request = *event;
ctx->selection_incremental_transfer = 0;
if (event->selection == ctx->atoms[ATOM_CLIPBOARD_MANAGER].value) {
sl_send_selection_notify(ctx, ctx->selection_request.property);
return;
}
if (event->target == ctx->atoms[ATOM_TARGETS].value) {
sl_send_targets(ctx);
} else if (event->target == ctx->atoms[ATOM_TIMESTAMP].value) {
sl_send_timestamp(ctx);
} else {
int success = 0;
xcb_atom_t* atom;
wl_array_for_each(atom, &ctx->selection_data_offer->atoms) {
if (event->target == *atom) {
success = 1;
sl_send_data(ctx, *atom);
break;
}
}
if (!success) {
sl_send_selection_notify(ctx, XCB_ATOM_NONE);
}
}
}
static void sl_handle_xfixes_selection_notify(
struct sl_context* ctx, xcb_xfixes_selection_notify_event_t* event) {
if (event->selection != ctx->atoms[ATOM_CLIPBOARD].value)
return;
if (event->owner == XCB_WINDOW_NONE) {
// If client selection is gone. Set NULL selection for each seat.
if (ctx->selection_owner != ctx->selection_window) {
if (ctx->selection_data_device && ctx->default_seat) {
wl_data_device_set_selection(ctx->selection_data_device, NULL,
ctx->default_seat->seat->last_serial);
}
}
ctx->selection_owner = XCB_WINDOW_NONE;
return;
}
ctx->selection_owner = event->owner;
// Save timestamp if it's our selection.
if (event->owner == ctx->selection_window) {
ctx->selection_timestamp = event->timestamp;
return;
}
ctx->selection_incremental_transfer = 0;
xcb_convert_selection(ctx->connection, ctx->selection_window,
ctx->atoms[ATOM_CLIPBOARD].value,
ctx->atoms[ATOM_TARGETS].value,
ctx->atoms[ATOM_WL_SELECTION].value, event->timestamp);
}
static int sl_handle_x_connection_event(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = (struct sl_context*)data;
xcb_generic_event_t *event;
uint32_t count = 0;
if ((mask & WL_EVENT_HANGUP) || (mask & WL_EVENT_ERROR))
return 0;
while ((event = xcb_poll_for_event(ctx->connection))) {
switch (event->response_type & ~SEND_EVENT_MASK) {
case XCB_CREATE_NOTIFY:
sl_handle_create_notify(ctx, (xcb_create_notify_event_t*)event);
break;
case XCB_DESTROY_NOTIFY:
sl_handle_destroy_notify(ctx, (xcb_destroy_notify_event_t*)event);
break;
case XCB_REPARENT_NOTIFY:
sl_handle_reparent_notify(ctx, (xcb_reparent_notify_event_t*)event);
break;
case XCB_MAP_REQUEST:
sl_handle_map_request(ctx, (xcb_map_request_event_t*)event);
break;
case XCB_MAP_NOTIFY:
sl_handle_map_notify(ctx, (xcb_map_notify_event_t*)event);
break;
case XCB_UNMAP_NOTIFY:
sl_handle_unmap_notify(ctx, (xcb_unmap_notify_event_t*)event);
break;
case XCB_CONFIGURE_REQUEST:
sl_handle_configure_request(ctx, (xcb_configure_request_event_t*)event);
break;
case XCB_CONFIGURE_NOTIFY:
sl_handle_configure_notify(ctx, (xcb_configure_notify_event_t*)event);
break;
case XCB_CLIENT_MESSAGE:
sl_handle_client_message(ctx, (xcb_client_message_event_t*)event);
break;
case XCB_FOCUS_IN:
sl_handle_focus_in(ctx, (xcb_focus_in_event_t*)event);
break;
case XCB_FOCUS_OUT:
sl_handle_focus_out(ctx, (xcb_focus_out_event_t*)event);
break;
case XCB_PROPERTY_NOTIFY:
sl_handle_property_notify(ctx, (xcb_property_notify_event_t*)event);
break;
case XCB_SELECTION_NOTIFY:
sl_handle_selection_notify(ctx, (xcb_selection_notify_event_t*)event);
break;
case XCB_SELECTION_REQUEST:
sl_handle_selection_request(ctx, (xcb_selection_request_event_t*)event);
break;
}
switch (event->response_type - ctx->xfixes_extension->first_event) {
case XCB_XFIXES_SELECTION_NOTIFY:
sl_handle_xfixes_selection_notify(
ctx, (xcb_xfixes_selection_notify_event_t*)event);
break;
}
free(event);
++count;
}
if ((mask & ~WL_EVENT_WRITABLE) == 0)
xcb_flush(ctx->connection);
return count;
}
static void sl_connect(struct sl_context* ctx) {
const char wm_name[] = "Sommelier";
const xcb_setup_t *setup;
xcb_screen_iterator_t screen_iterator;
uint32_t values[1];
xcb_void_cookie_t change_attributes_cookie, redirect_subwindows_cookie;
xcb_generic_error_t *error;
xcb_intern_atom_reply_t *atom_reply;
xcb_depth_iterator_t depth_iterator;
xcb_xfixes_query_version_reply_t *xfixes_query_version_reply;
const xcb_query_extension_reply_t *composite_extension;
unsigned i;
ctx->connection = xcb_connect_to_fd(ctx->wm_fd, NULL);
assert(!xcb_connection_has_error(ctx->connection));
xcb_prefetch_extension_data(ctx->connection, &xcb_xfixes_id);
xcb_prefetch_extension_data(ctx->connection, &xcb_composite_id);
for (i = 0; i < ARRAY_SIZE(ctx->atoms); ++i) {
const char* name = ctx->atoms[i].name;
ctx->atoms[i].cookie =
xcb_intern_atom(ctx->connection, 0, strlen(name), name);
}
setup = xcb_get_setup(ctx->connection);
screen_iterator = xcb_setup_roots_iterator(setup);
ctx->screen = screen_iterator.data;
// Select for substructure redirect.
values[0] = XCB_EVENT_MASK_STRUCTURE_NOTIFY |
XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
change_attributes_cookie = xcb_change_window_attributes(
ctx->connection, ctx->screen->root, XCB_CW_EVENT_MASK, values);
ctx->connection_event_source = wl_event_loop_add_fd(
wl_display_get_event_loop(ctx->host_display),
xcb_get_file_descriptor(ctx->connection), WL_EVENT_READABLE,
&sl_handle_x_connection_event, ctx);
ctx->xfixes_extension =
xcb_get_extension_data(ctx->connection, &xcb_xfixes_id);
assert(ctx->xfixes_extension->present);
xfixes_query_version_reply = xcb_xfixes_query_version_reply(
ctx->connection,
xcb_xfixes_query_version(ctx->connection, XCB_XFIXES_MAJOR_VERSION,
XCB_XFIXES_MINOR_VERSION),
NULL);
assert(xfixes_query_version_reply);
assert(xfixes_query_version_reply->major_version >= 5);
free(xfixes_query_version_reply);
composite_extension =
xcb_get_extension_data(ctx->connection, &xcb_composite_id);
assert(composite_extension->present);
UNUSED(composite_extension);
redirect_subwindows_cookie = xcb_composite_redirect_subwindows_checked(
ctx->connection, ctx->screen->root, XCB_COMPOSITE_REDIRECT_MANUAL);
// Another window manager should not be running.
error = xcb_request_check(ctx->connection, change_attributes_cookie);
assert(!error);
// Redirecting subwindows of root for compositing should have succeeded.
error = xcb_request_check(ctx->connection, redirect_subwindows_cookie);
assert(!error);
ctx->window = xcb_generate_id(ctx->connection);
xcb_create_window(ctx->connection, 0, ctx->window, ctx->screen->root, 0, 0, 1,
1, 0, XCB_WINDOW_CLASS_INPUT_ONLY, XCB_COPY_FROM_PARENT, 0,
NULL);
for (i = 0; i < ARRAY_SIZE(ctx->atoms); ++i) {
atom_reply =
xcb_intern_atom_reply(ctx->connection, ctx->atoms[i].cookie, &error);
assert(!error);
ctx->atoms[i].value = atom_reply->atom;
free(atom_reply);
}
depth_iterator = xcb_screen_allowed_depths_iterator(ctx->screen);
while (depth_iterator.rem > 0) {
int depth = depth_iterator.data->depth;
if (depth == ctx->screen->root_depth) {
ctx->visual_ids[depth] = ctx->screen->root_visual;
ctx->colormaps[depth] = ctx->screen->default_colormap;
} else {
xcb_visualtype_iterator_t visualtype_iterator =
xcb_depth_visuals_iterator(depth_iterator.data);
ctx->visual_ids[depth] = visualtype_iterator.data->visual_id;
ctx->colormaps[depth] = xcb_generate_id(ctx->connection);
xcb_create_colormap(ctx->connection, XCB_COLORMAP_ALLOC_NONE,
ctx->colormaps[depth], ctx->screen->root,
ctx->visual_ids[depth]);
}
xcb_depth_next(&depth_iterator);
}
assert(ctx->visual_ids[ctx->screen->root_depth]);
if (ctx->clipboard_manager) {
values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
ctx->selection_window = xcb_generate_id(ctx->connection);
xcb_create_window(ctx->connection, XCB_COPY_FROM_PARENT,
ctx->selection_window, ctx->screen->root, 0, 0, 1, 1, 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT, ctx->screen->root_visual,
XCB_CW_EVENT_MASK, values);
xcb_set_selection_owner(ctx->connection, ctx->selection_window,
ctx->atoms[ATOM_CLIPBOARD_MANAGER].value,
XCB_CURRENT_TIME);
xcb_xfixes_select_selection_input(
ctx->connection, ctx->selection_window,
ctx->atoms[ATOM_CLIPBOARD].value,
XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER |
XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY |
XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE);
sl_set_selection(ctx, NULL);
}
xcb_change_property(ctx->connection, XCB_PROP_MODE_REPLACE, ctx->window,
ctx->atoms[ATOM_NET_SUPPORTING_WM_CHECK].value,
XCB_ATOM_WINDOW, 32, 1, &ctx->window);
xcb_change_property(ctx->connection, XCB_PROP_MODE_REPLACE, ctx->window,
ctx->atoms[ATOM_NET_WM_NAME].value,
ctx->atoms[ATOM_UTF8_STRING].value, 8, strlen(wm_name),
wm_name);
xcb_change_property(ctx->connection, XCB_PROP_MODE_REPLACE, ctx->screen->root,
ctx->atoms[ATOM_NET_SUPPORTING_WM_CHECK].value,
XCB_ATOM_WINDOW, 32, 1, &ctx->window);
xcb_set_selection_owner(ctx->connection, ctx->window,
ctx->atoms[ATOM_WM_S0].value, XCB_CURRENT_TIME);
xcb_set_input_focus(ctx->connection, XCB_INPUT_FOCUS_NONE, XCB_NONE,
XCB_CURRENT_TIME);
xcb_flush(ctx->connection);
}
static void sl_sd_notify(const char* state) {
const char* socket_name;
struct msghdr msghdr;
struct iovec iovec;
struct sockaddr_un addr;
int fd;
int rv;
socket_name = getenv("NOTIFY_SOCKET");
assert(socket_name);
fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
assert(fd >= 0);
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, socket_name, sizeof(addr.sun_path));
memset(&iovec, 0, sizeof(iovec));
iovec.iov_base = (char*)state;
iovec.iov_len = strlen(state);
memset(&msghdr, 0, sizeof(msghdr));
msghdr.msg_name = &addr;
msghdr.msg_namelen =
offsetof(struct sockaddr_un, sun_path) + strlen(socket_name);
msghdr.msg_iov = &iovec;
msghdr.msg_iovlen = 1;
rv = sendmsg(fd, &msghdr, MSG_NOSIGNAL);
assert(rv != -1);
UNUSED(rv);
}
static int sl_handle_sigchld(int signal_number, void* data) {
struct sl_context* ctx = (struct sl_context*)data;
int status;
pid_t pid;
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
if (pid == ctx->child_pid) {
ctx->child_pid = -1;
if (WIFEXITED(status) && WEXITSTATUS(status)) {
fprintf(stderr, "Child exited with status: %d\n", WEXITSTATUS(status));
}
if (ctx->exit_with_child) {
if (ctx->xwayland_pid >= 0)
kill(ctx->xwayland_pid, SIGTERM);
} else {
// Notify systemd that we are ready to accept connections now that
// child process has finished running and all environment is ready.
if (ctx->sd_notify)
sl_sd_notify(ctx->sd_notify);
}
} else if (pid == ctx->xwayland_pid) {
ctx->xwayland_pid = -1;
if (WIFEXITED(status) && WEXITSTATUS(status)) {
fprintf(stderr, "Xwayland exited with status: %d\n",
WEXITSTATUS(status));
exit(WEXITSTATUS(status));
}
}
}
return 1;
}
static void sl_execvp(const char* file,
char* const argv[],
int wayland_socked_fd) {
if (wayland_socked_fd >= 0) {
int fd;
fd = dup(wayland_socked_fd);
putenv(sl_xasprintf("WAYLAND_SOCKET=%d", fd));
}
setenv("SOMMELIER_VERSION", SOMMELIER_VERSION, 1);
execvp(file, argv);
perror(file);
}
static void sl_calculate_scale_for_xwayland(struct sl_context* ctx) {
struct sl_host_output* output;
double default_scale_factor = 1.0;
double scale;
// Find internal output and determine preferred scale factor.
wl_list_for_each(output, &ctx->host_outputs, link) {
if (output->internal) {
double preferred_scale =
sl_output_aura_scale_factor_to_double(output->preferred_scale);
if (ctx->aura_shell) {
double device_scale_factor =
sl_output_aura_scale_factor_to_double(output->device_scale_factor);
default_scale_factor = device_scale_factor * preferred_scale;
}
break;
}
}
// We use the default scale factor multipled by desired scale set by the
// user. This gives us HiDPI support by default but the user can still
// adjust it if higher or lower density is preferred.
scale = ctx->desired_scale * default_scale_factor;
// Round to integer scale if wp_viewporter interface is not present.
if (!ctx->viewporter)
scale = round(scale);
// Clamp and set scale.
ctx->scale = MIN(MAX_SCALE, MAX(MIN_SCALE, scale));
// Scale affects output state. Send updated output state to xwayland.
wl_list_for_each(output, &ctx->host_outputs, link)
sl_output_send_host_output_state(output);
}
static int sl_handle_display_ready_event(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = (struct sl_context*)data;
char display_name[9];
int bytes_read = 0;
pid_t pid;
if (!(mask & WL_EVENT_READABLE))
return 0;
display_name[0] = ':';
do {
int bytes_left = sizeof(display_name) - bytes_read - 1;
int bytes;
if (!bytes_left)
break;
bytes = read(fd, &display_name[bytes_read + 1], bytes_left);
if (!bytes)
break;
bytes_read += bytes;
} while (display_name[bytes_read] != '\n');
display_name[bytes_read] = '\0';
setenv("DISPLAY", display_name, 1);
sl_connect(ctx);
wl_event_source_remove(ctx->display_ready_event_source);
ctx->display_ready_event_source = NULL;
close(fd);
// Calculate scale now that the default scale factor is known. This also
// happens to workaround an issue in Xwayland where an output update is
// needed for DPI to be set correctly.
sl_calculate_scale_for_xwayland(ctx);
wl_display_flush_clients(ctx->host_display);
putenv(sl_xasprintf("XCURSOR_SIZE=%d",
(int)(XCURSOR_SIZE_BASE * ctx->scale + 0.5)));
pid = fork();
assert(pid >= 0);
if (pid == 0) {
sl_execvp(ctx->runprog[0], ctx->runprog, -1);
_exit(EXIT_FAILURE);
}
ctx->child_pid = pid;
return 1;
}
static void sl_sigchld_handler(int signal) {
while (waitpid(-1, NULL, WNOHANG) > 0)
continue;
}
static void sl_client_destroy_notify(struct wl_listener* listener, void* data) {
exit(0);
}
static int sl_handle_virtwl_ctx_event(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = (struct sl_context*)data;
uint8_t ioctl_buffer[4096];
struct virtwl_ioctl_txn *ioctl_recv = (struct virtwl_ioctl_txn *)ioctl_buffer;
void *recv_data = ioctl_buffer + sizeof(struct virtwl_ioctl_txn);
size_t max_recv_size = sizeof(ioctl_buffer) - sizeof(struct virtwl_ioctl_txn);
char fd_buffer[CMSG_LEN(sizeof(int) * VIRTWL_SEND_MAX_ALLOCS)];
struct msghdr msg = {0};
struct iovec buffer_iov;
ssize_t bytes;
int fd_count;
int rv;
ioctl_recv->len = max_recv_size;
rv = ioctl(fd, VIRTWL_IOCTL_RECV, ioctl_recv);
if (rv) {
close(ctx->virtwl_socket_fd);
ctx->virtwl_socket_fd = -1;
return 0;
}
buffer_iov.iov_base = recv_data;
buffer_iov.iov_len = ioctl_recv->len;
msg.msg_iov = &buffer_iov;
msg.msg_iovlen = 1;
msg.msg_control = fd_buffer;
// Count how many FDs the kernel gave us.
for (fd_count = 0; fd_count < VIRTWL_SEND_MAX_ALLOCS; fd_count++) {
if (ioctl_recv->fds[fd_count] < 0)
break;
}
if (fd_count) {
struct cmsghdr *cmsg;
// Need to set msg_controllen so CMSG_FIRSTHDR will return the first
// cmsghdr. We copy every fd we just received from the ioctl into this
// cmsghdr.
msg.msg_controllen = sizeof(fd_buffer);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(fd_count * sizeof(int));
memcpy(CMSG_DATA(cmsg), ioctl_recv->fds, fd_count * sizeof(int));
msg.msg_controllen = cmsg->cmsg_len;
}
bytes = sendmsg(ctx->virtwl_socket_fd, &msg, MSG_NOSIGNAL);
assert(bytes == ioctl_recv->len);
UNUSED(bytes);
while (fd_count--)
close(ioctl_recv->fds[fd_count]);
return 1;
}
static int sl_handle_virtwl_socket_event(int fd, uint32_t mask, void* data) {
struct sl_context* ctx = (struct sl_context*)data;
uint8_t ioctl_buffer[4096];
struct virtwl_ioctl_txn *ioctl_send = (struct virtwl_ioctl_txn *)ioctl_buffer;
void *send_data = ioctl_buffer + sizeof(struct virtwl_ioctl_txn);
size_t max_send_size = sizeof(ioctl_buffer) - sizeof(struct virtwl_ioctl_txn);
char fd_buffer[CMSG_LEN(sizeof(int) * VIRTWL_SEND_MAX_ALLOCS)];
struct iovec buffer_iov;
struct msghdr msg = {0};
struct cmsghdr *cmsg;
ssize_t bytes;
int fd_count = 0;
int rv;
int i;
buffer_iov.iov_base = send_data;
buffer_iov.iov_len = max_send_size;
msg.msg_iov = &buffer_iov;
msg.msg_iovlen = 1;
msg.msg_control = fd_buffer;
msg.msg_controllen = sizeof(fd_buffer);
bytes = recvmsg(ctx->virtwl_socket_fd, &msg, 0);
assert(bytes > 0);
// If there were any FDs recv'd by recvmsg, there will be some data in the
// msg_control buffer. To get the FDs out we iterate all cmsghdr's within and
// unpack the FDs if the cmsghdr type is SCM_RIGHTS.
for (cmsg = msg.msg_controllen != 0 ? CMSG_FIRSTHDR(&msg) : NULL; cmsg;
cmsg = CMSG_NXTHDR(&msg, cmsg)) {
size_t cmsg_fd_count;
if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS)
continue;
cmsg_fd_count = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
// fd_count will never exceed VIRTWL_SEND_MAX_ALLOCS because the
// control message buffer only allocates enough space for that many FDs.
memcpy(&ioctl_send->fds[fd_count], CMSG_DATA(cmsg),
cmsg_fd_count * sizeof(int));
fd_count += cmsg_fd_count;
}
for (i = fd_count; i < VIRTWL_SEND_MAX_ALLOCS; ++i)
ioctl_send->fds[i] = -1;
// The FDs and data were extracted from the recvmsg call into the ioctl_send
// structure which we now pass along to the kernel.
ioctl_send->len = bytes;
rv = ioctl(ctx->virtwl_ctx_fd, VIRTWL_IOCTL_SEND, ioctl_send);
assert(!rv);
UNUSED(rv);
while (fd_count--)
close(ioctl_send->fds[fd_count]);
return 1;
}
// Break |str| into a sequence of zero or more nonempty arguments. No more
// than |argc| arguments will be added to |argv|. Returns the total number of
// argments found in |str|.
static int sl_parse_cmd_prefix(char* str, int argc, char** argv) {
char *s = str;
int n = 0;
int delim = 0;
do {
// Look for ending delimiter if |delim| is set.
if (delim) {
if (*s == delim) {
delim = 0;
*s = '\0';
}
++s;
} else {
// Skip forward to first non-space character.
while (*s == ' ' && *s != '\0')
++s;
// Check for quote delimiter.
if (*s == '"') {
delim = '"';
++s;
} else {
delim = ' ';
}
// Add string to arguments if there's room.
if (n < argc)
argv[n] = s;
++n;
}
} while (*s != '\0');
return n;
}
static void sl_print_usage() {
printf(
"usage: sommelier [options] [program] [args...]\n\n"
"options:\n"
" -h, --help\t\t\tPrint this help\n"
" -X\t\t\t\tEnable X11 forwarding\n"
" --master\t\t\tRun as master and spawn child processes\n"
" --socket=SOCKET\t\tName of socket to listen on\n"
" --display=DISPLAY\t\tWayland display to connect to\n"
" --shm-driver=DRIVER\t\tSHM driver to use (noop, dmabuf, virtwl)\n"
" --data-driver=DRIVER\t\tData driver to use (noop, virtwl)\n"
" --scale=SCALE\t\t\tScale factor for contents\n"
" --dpi=[DPI[,DPI...]]\t\tDPI buckets\n"
" --peer-cmd-prefix=PREFIX\tPeer process command line prefix\n"
" --accelerators=ACCELERATORS\tList of keyboard accelerators\n"
" --application-id=ID\t\tForced application ID for X11 clients\n"
" --x-display=DISPLAY\t\tX11 display to listen on\n"
" --xwayland-path=PATH\t\tPath to Xwayland executable\n"
" --xwayland-gl-driver-path=PATH\tPath to GL drivers for Xwayland\n"
" --xwayland-cmd-prefix=PREFIX\tXwayland command line prefix\n"
" --no-exit-with-child\t\tKeep process alive after child exists\n"
" --no-clipboard-manager\tDisable X11 clipboard manager\n"
" --frame-color=COLOR\t\tWindow frame color for X11 clients\n"
" --virtwl-device=DEVICE\tVirtWL device to use\n"
" --drm-device=DEVICE\t\tDRM device to use\n"
" --glamor\t\t\tUse glamor to accelerate X11 clients\n");
}
static const char* sl_arg_value(const char* arg) {
const char* s = strchr(arg, '=');
if (!s) {
sl_print_usage();
exit(EXIT_FAILURE);
}
return s + 1;
}
int main(int argc, char **argv) {
struct sl_context ctx = {
.runprog = NULL,
.display = NULL,
.host_display = NULL,
.client = NULL,
.compositor = NULL,
.subcompositor = NULL,
.shm = NULL,
.shell = NULL,
.data_device_manager = NULL,
.xdg_shell = NULL,
.aura_shell = NULL,
.viewporter = NULL,
.linux_dmabuf = NULL,
.keyboard_extension = NULL,
.text_input_manager = NULL,
.display_event_source = NULL,
.display_ready_event_source = NULL,
.sigchld_event_source = NULL,
.shm_driver = SHM_DRIVER_NOOP,
.data_driver = DATA_DRIVER_NOOP,
.wm_fd = -1,
.virtwl_fd = -1,
.virtwl_ctx_fd = -1,
.virtwl_socket_fd = -1,
.virtwl_ctx_event_source = NULL,
.virtwl_socket_event_source = NULL,
.drm_device = NULL,
.gbm = NULL,
.xwayland = 0,
.xwayland_pid = -1,
.child_pid = -1,
.peer_pid = -1,
.xkb_context = NULL,
.next_global_id = 1,
.connection = NULL,
.connection_event_source = NULL,
.xfixes_extension = NULL,
.screen = NULL,
.window = 0,
.host_focus_window = NULL,
.needs_set_input_focus = 0,
.desired_scale = 1.0,
.scale = 1.0,
.application_id = NULL,
.exit_with_child = 1,
.sd_notify = NULL,
.clipboard_manager = 0,
.frame_color = 0xffffffff,
.dark_frame_color = 0xff000000,
.default_seat = NULL,
.selection_window = XCB_WINDOW_NONE,
.selection_owner = XCB_WINDOW_NONE,
.selection_incremental_transfer = 0,
.selection_request = {.requestor = XCB_NONE, .property = XCB_ATOM_NONE},
.selection_timestamp = XCB_CURRENT_TIME,
.selection_data_device = NULL,
.selection_data_offer = NULL,
.selection_data_source = NULL,
.selection_data_source_send_fd = -1,
.selection_send_event_source = NULL,
.selection_property_reply = NULL,
.selection_property_offset = 0,
.selection_event_source = NULL,
.selection_data_offer_receive_fd = -1,
.selection_data_ack_pending = 0,
.atoms =
{
[ATOM_WM_S0] = {"WM_S0"},
[ATOM_WM_PROTOCOLS] = {"WM_PROTOCOLS"},
[ATOM_WM_STATE] = {"WM_STATE"},
[ATOM_WM_CHANGE_STATE] = {"WM_CHANGE_STATE"},
[ATOM_WM_DELETE_WINDOW] = {"WM_DELETE_WINDOW"},
[ATOM_WM_TAKE_FOCUS] = {"WM_TAKE_FOCUS"},
[ATOM_WM_CLIENT_LEADER] = {"WM_CLIENT_LEADER"},
[ATOM_WL_SURFACE_ID] = {"WL_SURFACE_ID"},
[ATOM_UTF8_STRING] = {"UTF8_STRING"},
[ATOM_MOTIF_WM_HINTS] = {"_MOTIF_WM_HINTS"},
[ATOM_NET_FRAME_EXTENTS] = {"_NET_FRAME_EXTENTS"},
[ATOM_NET_STARTUP_ID] = {"_NET_STARTUP_ID"},
[ATOM_NET_SUPPORTING_WM_CHECK] = {"_NET_SUPPORTING_WM_CHECK"},
[ATOM_NET_WM_NAME] = {"_NET_WM_NAME"},
[ATOM_NET_WM_MOVERESIZE] = {"_NET_WM_MOVERESIZE"},
[ATOM_NET_WM_STATE] = {"_NET_WM_STATE"},
[ATOM_NET_WM_STATE_FULLSCREEN] = {"_NET_WM_STATE_FULLSCREEN"},
[ATOM_NET_WM_STATE_MAXIMIZED_VERT] =
{"_NET_WM_STATE_MAXIMIZED_VERT"},
[ATOM_NET_WM_STATE_MAXIMIZED_HORZ] =
{"_NET_WM_STATE_MAXIMIZED_HORZ"},
[ATOM_CLIPBOARD] = {"CLIPBOARD"},
[ATOM_CLIPBOARD_MANAGER] = {"CLIPBOARD_MANAGER"},
[ATOM_TARGETS] = {"TARGETS"},
[ATOM_TIMESTAMP] = {"TIMESTAMP"},
[ATOM_TEXT] = {"TEXT"},
[ATOM_INCR] = {"INCR"},
[ATOM_WL_SELECTION] = {"_WL_SELECTION"},
[ATOM_GTK_THEME_VARIANT] = {"_GTK_THEME_VARIANT"},
},
.visual_ids = {0},
.colormaps = {0}};
const char *display = getenv("SOMMELIER_DISPLAY");
const char *scale = getenv("SOMMELIER_SCALE");
const char* dpi = getenv("SOMMELIER_DPI");
const char *clipboard_manager = getenv("SOMMELIER_CLIPBOARD_MANAGER");
const char *frame_color = getenv("SOMMELIER_FRAME_COLOR");
const char* dark_frame_color = getenv("SOMMELIER_DARK_FRAME_COLOR");
const char *virtwl_device = getenv("SOMMELIER_VIRTWL_DEVICE");
const char *drm_device = getenv("SOMMELIER_DRM_DEVICE");
const char *glamor = getenv("SOMMELIER_GLAMOR");
const char *shm_driver = getenv("SOMMELIER_SHM_DRIVER");
const char *data_driver = getenv("SOMMELIER_DATA_DRIVER");
const char *peer_cmd_prefix = getenv("SOMMELIER_PEER_CMD_PREFIX");
const char *xwayland_cmd_prefix = getenv("SOMMELIER_XWAYLAND_CMD_PREFIX");
const char *accelerators = getenv("SOMMELIER_ACCELERATORS");
const char *xwayland_path = getenv("SOMMELIER_XWAYLAND_PATH");
const char *xwayland_gl_driver_path =
getenv("SOMMELIER_XWAYLAND_GL_DRIVER_PATH");
const char* xauth_path = getenv("SOMMELIER_XAUTH_PATH");
const char* xfont_path = getenv("SOMMELIER_XFONT_PATH");
const char *socket_name = "wayland-0";
const char *runtime_dir;
struct wl_event_loop *event_loop;
struct wl_listener client_destroy_listener = {.notify =
sl_client_destroy_notify};
int sv[2];
pid_t pid;
int virtwl_display_fd = -1;
int xdisplay = -1;
int master = 0;
int client_fd = -1;
int rv;
int i;
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0 ||
strcmp(arg, "-?") == 0) {
sl_print_usage();
return EXIT_SUCCESS;
}
if (strcmp(arg, "--version") == 0 || strcmp(arg, "-v") == 0) {
printf("Version: %s\n", SOMMELIER_VERSION);
return EXIT_SUCCESS;
}
if (strstr(arg, "--master") == arg) {
master = 1;
} else if (strstr(arg, "--socket") == arg) {
socket_name = sl_arg_value(arg);
} else if (strstr(arg, "--display") == arg) {
display = sl_arg_value(arg);
} else if (strstr(arg, "--shm-driver") == arg) {
shm_driver = sl_arg_value(arg);
} else if (strstr(arg, "--data-driver") == arg) {
data_driver = sl_arg_value(arg);
} else if (strstr(arg, "--peer-pid") == arg) {
ctx.peer_pid = atoi(sl_arg_value(arg));
} else if (strstr(arg, "--peer-cmd-prefix") == arg) {
peer_cmd_prefix = sl_arg_value(arg);
} else if (strstr(arg, "--xwayland-cmd-prefix") == arg) {
xwayland_cmd_prefix = sl_arg_value(arg);
} else if (strstr(arg, "--client-fd") == arg) {
client_fd = atoi(sl_arg_value(arg));
} else if (strstr(arg, "--scale") == arg) {
scale = sl_arg_value(arg);
} else if (strstr(arg, "--dpi") == arg) {
dpi = sl_arg_value(arg);
} else if (strstr(arg, "--accelerators") == arg) {
accelerators = sl_arg_value(arg);
} else if (strstr(arg, "--application-id") == arg) {
ctx.application_id = sl_arg_value(arg);
} else if (strstr(arg, "-X") == arg) {
ctx.xwayland = 1;
} else if (strstr(arg, "--x-display") == arg) {
xdisplay = atoi(sl_arg_value(arg));
// Automatically enable X forwarding if X display is specified.
ctx.xwayland = 1;
} else if (strstr(arg, "--xwayland-path") == arg) {
xwayland_path = sl_arg_value(arg);
} else if (strstr(arg, "--xwayland-gl-driver-path") == arg) {
xwayland_gl_driver_path = sl_arg_value(arg);
} else if (strstr(arg, "--no-exit-with-child") == arg) {
ctx.exit_with_child = 0;
} else if (strstr(arg, "--sd-notify") == arg) {
ctx.sd_notify = sl_arg_value(arg);
} else if (strstr(arg, "--no-clipboard-manager") == arg) {
clipboard_manager = "0";
} else if (strstr(arg, "--frame-color") == arg) {
frame_color = sl_arg_value(arg);
} else if (strstr(arg, "--dark-frame-color") == arg) {
dark_frame_color = sl_arg_value(arg);
} else if (strstr(arg, "--virtwl-device") == arg) {
virtwl_device = sl_arg_value(arg);
} else if (strstr(arg, "--drm-device") == arg) {
drm_device = sl_arg_value(arg);
} else if (strstr(arg, "--glamor") == arg) {
glamor = "1";
} else if (strstr(arg, "--x-auth") == arg) {
xauth_path = sl_arg_value(arg);
} else if (strstr(arg, "--x-font-path") == arg) {
xfont_path = sl_arg_value(arg);
} else if (arg[0] == '-') {
if (strcmp(arg, "--") == 0) {
ctx.runprog = &argv[i + 1];
break;
}
// Don't exit on unknown options so we can have forward compatibility
// with new flags introduced.
fprintf(stderr, "Option `%s' is unknown, ignoring.\n", arg);
} else {
ctx.runprog = &argv[i];
break;
}
}
runtime_dir = getenv("XDG_RUNTIME_DIR");
if (!runtime_dir) {
fprintf(stderr, "error: XDG_RUNTIME_DIR not set in the environment\n");
return EXIT_FAILURE;
}
if (master) {
char* lock_addr;
struct sockaddr_un addr;
struct sigaction sa;
struct stat sock_stat;
int lock_fd;
int sock_fd;
addr.sun_family = AF_LOCAL;
snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/%s", runtime_dir,
socket_name);
lock_addr = sl_xasprintf("%s%s", addr.sun_path, LOCK_SUFFIX);
lock_fd = open(lock_addr, O_CREAT | O_CLOEXEC,
(S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP));
assert(lock_fd >= 0);
rv = flock(lock_fd, LOCK_EX | LOCK_NB);
if (rv < 0) {
fprintf(stderr,
"error: unable to lock %s, is another compositor running?\n",
lock_addr);
return EXIT_FAILURE;
}
free(lock_addr);
rv = stat(addr.sun_path, &sock_stat);
if (rv >= 0) {
if (sock_stat.st_mode & (S_IWUSR | S_IWGRP))
unlink(addr.sun_path);
} else {
assert(errno == ENOENT);
}
sock_fd = socket(PF_LOCAL, SOCK_STREAM, 0);
assert(sock_fd >= 0);
rv = bind(sock_fd, (struct sockaddr *)&addr,
offsetof(struct sockaddr_un, sun_path) + strlen(addr.sun_path));
assert(rv >= 0);
rv = listen(sock_fd, 128);
assert(rv >= 0);
// Spawn optional child process before we notify systemd that we're ready
// to accept connections. WAYLAND_DISPLAY will be set but any attempt to
// connect to this socket at this time will fail.
if (ctx.runprog && ctx.runprog[0]) {
pid = fork();
assert(pid != -1);
if (pid == 0) {
setenv("WAYLAND_DISPLAY", socket_name, 1);
sl_execvp(ctx.runprog[0], ctx.runprog, -1);
_exit(EXIT_FAILURE);
}
while (waitpid(-1, NULL, WNOHANG) != pid)
continue;
}
if (ctx.sd_notify)
sl_sd_notify(ctx.sd_notify);
sa.sa_handler = sl_sigchld_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
rv = sigaction(SIGCHLD, &sa, NULL);
assert(rv >= 0);
do {
struct ucred ucred;
socklen_t length = sizeof(addr);
client_fd = accept(sock_fd, (struct sockaddr *)&addr, &length);
if (client_fd < 0) {
fprintf(stderr, "error: failed to accept: %m\n");
continue;
}
ucred.pid = -1;
length = sizeof(ucred);
rv = getsockopt(client_fd, SOL_SOCKET, SO_PEERCRED, &ucred, &length);
pid = fork();
assert(pid != -1);
if (pid == 0) {
char* client_fd_str;
char* peer_pid_str;
// char* peer_cmd_prefix_str;
char *args[64];
int i = 0, j;
close(sock_fd);
close(lock_fd);
if (!peer_cmd_prefix)
peer_cmd_prefix = PEER_CMD_PREFIX;
/*
fprintf(stderr, "peer_cmd_prefix = '%s'\n", peer_cmd_prefix);
if (peer_cmd_prefix) {
peer_cmd_prefix_str = sl_xasprintf("%s", peer_cmd_prefix);
i = sl_parse_cmd_prefix(peer_cmd_prefix_str, 32, args);
if (i > 32) {
fprintf(stderr, "error: too many arguments in cmd prefix: %d\n", i);
i = 0;
}
}
*/
args[i++] = argv[0];
peer_pid_str = sl_xasprintf("--peer-pid=%d", ucred.pid);
args[i++] = peer_pid_str;
client_fd_str = sl_xasprintf("--client-fd=%d", client_fd);
args[i++] = client_fd_str;
// forward some flags.
for (j = 1; j < argc; ++j) {
char *arg = argv[j];
if (strstr(arg, "--display") == arg ||
strstr(arg, "--scale") == arg ||
strstr(arg, "--accelerators") == arg ||
strstr(arg, "--virtwl-device") == arg ||
strstr(arg, "--drm-device") == arg ||
strstr(arg, "--shm-driver") == arg ||
strstr(arg, "--data-driver") == arg) {
args[i++] = arg;
}
}
args[i++] = NULL;
execvp(args[0], args);
_exit(EXIT_FAILURE);
}
close(client_fd);
} while (1);
// Control should never reach here.
assert(false);
}
if (client_fd == -1) {
if (!ctx.runprog || !ctx.runprog[0]) {
sl_print_usage();
return EXIT_FAILURE;
}
}
if (ctx.xwayland) {
assert(client_fd == -1);
ctx.clipboard_manager = 1;
if (clipboard_manager)
ctx.clipboard_manager = !!strcmp(clipboard_manager, "0");
}
if (scale) {
ctx.desired_scale = atof(scale);
// Round to integer scale until we detect wp_viewporter support.
ctx.scale = MIN(MAX_SCALE, MAX(MIN_SCALE, round(ctx.desired_scale)));
}
if (!frame_color)
frame_color = FRAME_COLOR;
if (frame_color) {
int r, g, b;
if (sscanf(frame_color, "#%02x%02x%02x", &r, &g, &b) == 3)
ctx.frame_color = 0xff000000 | (r << 16) | (g << 8) | (b << 0);
}
if (!dark_frame_color)
dark_frame_color = DARK_FRAME_COLOR;
if (dark_frame_color) {
int r, g, b;
if (sscanf(dark_frame_color, "#%02x%02x%02x", &r, &g, &b) == 3)
ctx.dark_frame_color = 0xff000000 | (r << 16) | (g << 8) | (b << 0);
}
// Handle broken pipes without signals that kill the entire process.
signal(SIGPIPE, SIG_IGN);
ctx.host_display = wl_display_create();
assert(ctx.host_display);
event_loop = wl_display_get_event_loop(ctx.host_display);
if (!virtwl_device)
virtwl_device = VIRTWL_DEVICE;
if (virtwl_device) {
struct virtwl_ioctl_new new_ctx = {
.type = VIRTWL_IOCTL_NEW_CTX, .fd = -1, .flags = 0, .size = 0,
};
ctx.virtwl_fd = open(virtwl_device, O_RDWR);
if (ctx.virtwl_fd == -1) {
fprintf(stderr, "error: could not open %s (%s)\n", virtwl_device,
strerror(errno));
return EXIT_FAILURE;
}
// We use a virtwl context unless display was explicitly specified.
// WARNING: It's critical that we never call wl_display_roundtrip
// as we're not spawning a new thread to handle forwarding. Calling
// wl_display_roundtrip will cause a deadlock.
if (!display) {
int vws[2];
// Connection to virtwl channel.
rv = socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, vws);
assert(!rv);
ctx.virtwl_socket_fd = vws[0];
virtwl_display_fd = vws[1];
rv = ioctl(ctx.virtwl_fd, VIRTWL_IOCTL_NEW, &new_ctx);
if (rv) {
fprintf(stderr, "error: failed to create virtwl context: %s\n",
strerror(errno));
return EXIT_FAILURE;
}
//fprintf(stderr, "ioctl(%d, VIRTWL_IOCTL_NEW_CTX) -> %d\n", ctx.virtwl_fd, new_ctx.fd);
ctx.virtwl_ctx_fd = new_ctx.fd;
ctx.virtwl_socket_event_source = wl_event_loop_add_fd(
event_loop, ctx.virtwl_socket_fd, WL_EVENT_READABLE,
sl_handle_virtwl_socket_event, &ctx);
ctx.virtwl_ctx_event_source =
wl_event_loop_add_fd(event_loop, ctx.virtwl_ctx_fd, WL_EVENT_READABLE,
sl_handle_virtwl_ctx_event, &ctx);
}
}
if (drm_device) {
int drm_fd = open(drm_device, O_RDWR | O_CLOEXEC);
if (drm_fd == -1) {
fprintf(stderr, "error: could not open %s (%s)\n", drm_device,
strerror(errno));
return EXIT_FAILURE;
}
ctx.gbm = gbm_create_device(drm_fd);
if (!ctx.gbm) {
fprintf(stderr, "error: couldn't get display device\n");
return EXIT_FAILURE;
}
ctx.drm_device = drm_device;
}
if (!shm_driver)
shm_driver = ctx.xwayland ? XWAYLAND_SHM_DRIVER : SHM_DRIVER;
if (shm_driver) {
if (strcmp(shm_driver, "dmabuf") == 0) {
if (!ctx.drm_device) {
fprintf(stderr, "error: need drm device for dmabuf driver\n");
return EXIT_FAILURE;
}
ctx.shm_driver = SHM_DRIVER_DMABUF;
} else if (strcmp(shm_driver, "virtwl") == 0 ||
strcmp(shm_driver, "virtwl-dmabuf") == 0) {
if (ctx.virtwl_fd == -1) {
fprintf(stderr, "error: need device for virtwl driver\n");
return EXIT_FAILURE;
}
ctx.shm_driver = strcmp(shm_driver, "virtwl") ? SHM_DRIVER_VIRTWL_DMABUF
: SHM_DRIVER_VIRTWL;
// Check for compatibility with virtwl-dmabuf.
if (ctx.shm_driver == SHM_DRIVER_VIRTWL_DMABUF) {
struct virtwl_ioctl_new new_dmabuf = {
.type = VIRTWL_IOCTL_NEW_DMABUF,
.fd = -1,
.flags = 0,
.dmabuf =
{
.width = 0, .height = 0, .format = 0,
},
};
if (ioctl(ctx.virtwl_fd, VIRTWL_IOCTL_NEW, &new_dmabuf) == -1 &&
errno == ENOTTY) {
fprintf(stderr,
"warning: virtwl-dmabuf driver not supported by host, using "
"virtwl instead\n");
ctx.shm_driver = SHM_DRIVER_VIRTWL;
} else if (new_dmabuf.fd >= 0) {
// Close the returned dmabuf fd in case the invalid dmabuf metadata
// given above actually manages to return an fd successfully.
close(new_dmabuf.fd);
}
}
}
} else if (ctx.drm_device) {
ctx.shm_driver = SHM_DRIVER_DMABUF;
} else if (ctx.virtwl_fd != -1) {
ctx.shm_driver = SHM_DRIVER_VIRTWL_DMABUF;
}
if (data_driver) {
if (strcmp(data_driver, "virtwl") == 0) {
if (ctx.virtwl_fd == -1) {
fprintf(stderr, "error: need device for virtwl driver\n");
return EXIT_FAILURE;
}
ctx.data_driver = DATA_DRIVER_VIRTWL;
}
} else if (ctx.virtwl_fd != -1) {
ctx.data_driver = DATA_DRIVER_VIRTWL;
}
// Use well known values for DPI by default with Xwayland.
if (!dpi && ctx.xwayland)
dpi = "72,96,160,240,320,480";
wl_array_init(&ctx.dpi);
if (dpi) {
char* str = strdup(dpi);
char* token = strtok(str, ",");
int* p;
while (token) {
p = wl_array_add(&ctx.dpi, sizeof *p);
assert(p);
*p = MAX(MIN_DPI, MIN(atoi(token), MAX_DPI));
token = strtok(NULL, ",");
}
free(str);
}
if (ctx.runprog || ctx.xwayland) {
// Wayland connection from client.
rv = socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv);
assert(!rv);
client_fd = sv[0];
}
// The success of this depends on xkb-data being installed.
ctx.xkb_context = xkb_context_new(0);
if (!ctx.xkb_context) {
fprintf(stderr, "error: xkb_context_new failed. xkb-data missing?\n");
return EXIT_FAILURE;
}
if (virtwl_display_fd != -1) {
ctx.display = wl_display_connect_to_fd(virtwl_display_fd);
} else {
if (display == NULL)
display = getenv("WAYLAND_DISPLAY");
if (display == NULL)
display = "wayland-0";
ctx.display = wl_display_connect(display);
}
if (!ctx.display) {
fprintf(stderr, "error: failed to connect to %s\n", display);
return EXIT_FAILURE;
}
wl_list_init(&ctx.accelerators);
wl_list_init(&ctx.registries);
wl_list_init(&ctx.globals);
wl_list_init(&ctx.outputs);
wl_list_init(&ctx.seats);
wl_list_init(&ctx.windows);
wl_list_init(&ctx.unpaired_windows);
wl_list_init(&ctx.host_outputs);
wl_list_init(&ctx.selection_data_source_send_pending);
// Parse the list of accelerators that should be reserved by the
// compositor. Format is "|MODIFIERS|KEYSYM", where MODIFIERS is a
// list of modifier names (E.g. <Control><Alt>) and KEYSYM is an
// XKB key symbol name (E.g Delete).
if (accelerators) {
uint32_t modifiers = 0;
while (*accelerators) {
if (*accelerators == ',') {
accelerators++;
} else if (*accelerators == '<') {
if (strncmp(accelerators, "<Control>", 9) == 0) {
modifiers |= CONTROL_MASK;
accelerators += 9;
} else if (strncmp(accelerators, "<Alt>", 5) == 0) {
modifiers |= ALT_MASK;
accelerators += 5;
} else if (strncmp(accelerators, "<Shift>", 7) == 0) {
modifiers |= SHIFT_MASK;
accelerators += 7;
} else {
fprintf(stderr, "error: invalid modifier\n");
return EXIT_FAILURE;
}
} else {
struct sl_accelerator* accelerator;
const char *end = strchrnul(accelerators, ',');
char *name = strndup(accelerators, end - accelerators);
accelerator = malloc(sizeof(*accelerator));
accelerator->modifiers = modifiers;
accelerator->symbol =
xkb_keysym_from_name(name, XKB_KEYSYM_CASE_INSENSITIVE);
if (accelerator->symbol == XKB_KEY_NoSymbol) {
fprintf(stderr, "error: invalid key symbol\n");
return EXIT_FAILURE;
}
wl_list_insert(&ctx.accelerators, &accelerator->link);
modifiers = 0;
accelerators = end;
free(name);
}
}
}
ctx.display_event_source =
wl_event_loop_add_fd(event_loop, wl_display_get_fd(ctx.display),
WL_EVENT_READABLE, sl_handle_event, &ctx);
wl_registry_add_listener(wl_display_get_registry(ctx.display),
&sl_registry_listener, &ctx);
ctx.client = wl_client_create(ctx.host_display, client_fd);
// Replace the core display implementation. This is needed in order to
// implement sync handler properly.
sl_set_display_implementation(&ctx);
if (ctx.runprog || ctx.xwayland) {
ctx.sigchld_event_source =
wl_event_loop_add_signal(event_loop, SIGCHLD, sl_handle_sigchld, &ctx);
// Unset DISPLAY to prevent X clients from connecting to an existing X
// server when X forwarding is not enabled.
unsetenv("DISPLAY");
// Set WAYLAND_DISPLAY to value that is guaranteed to not point to a
// valid wayland compositor socket name. Resetting WAYLAND_DISPLAY is
// insufficient as clients will attempt to connect to wayland-0 if
// it's not set.
setenv("WAYLAND_DISPLAY", ".", 1);
if (ctx.xwayland) {
int ds[2], wm[2];
// Xwayland display ready socket.
rv = socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, ds);
assert(!rv);
ctx.display_ready_event_source =
wl_event_loop_add_fd(event_loop, ds[0], WL_EVENT_READABLE,
sl_handle_display_ready_event, &ctx);
// X connection to Xwayland.
rv = socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, wm);
assert(!rv);
ctx.wm_fd = wm[0];
pid = fork();
assert(pid != -1);
if (pid == 0) {
char* display_fd_str;
char* wm_fd_str;
char* xwayland_cmd_prefix_str;
char *args[64];
int i = 0;
int fd;
if (xwayland_cmd_prefix) {
xwayland_cmd_prefix_str = sl_xasprintf("%s", xwayland_cmd_prefix);
i = sl_parse_cmd_prefix(xwayland_cmd_prefix_str, 32, args);
if (i > 32) {
fprintf(stderr, "error: too many arguments in cmd prefix: %d\n", i);
i = 0;
}
}
args[i++] = sl_xasprintf("%s", xwayland_path ?: XWAYLAND_PATH);
fd = dup(ds[1]);
display_fd_str = sl_xasprintf("%d", fd);
fd = dup(wm[1]);
wm_fd_str = sl_xasprintf("%d", fd);
if (xdisplay > 0) {
args[i++] = sl_xasprintf(":%d", xdisplay);
}
args[i++] = "-nolisten";
args[i++] = "tcp";
args[i++] = "-rootless";
// Use software rendering unless we have a DRM device and glamor is
// enabled.
if (!ctx.drm_device || !glamor || !strcmp(glamor, "0"))
args[i++] = "-shm";
args[i++] = "-displayfd";
args[i++] = display_fd_str;
args[i++] = "-wm";
args[i++] = wm_fd_str;
if (xauth_path) {
args[i++] = "-auth";
args[i++] = sl_xasprintf("%s", xauth_path);
}
if (xfont_path) {
args[i++] = "-fp";
args[i++] = sl_xasprintf("%s", xfont_path);
}
args[i++] = NULL;
// If a path is explicitly specified via command line or environment
// use that instead of the compiled in default. In either case, only
// set the environment variable if the value specified is non-empty.
if (xwayland_gl_driver_path) {
if (*xwayland_gl_driver_path) {
setenv("LIBGL_DRIVERS_PATH", xwayland_gl_driver_path, 1);
}
} else if (XWAYLAND_GL_DRIVER_PATH && *XWAYLAND_GL_DRIVER_PATH) {
setenv("LIBGL_DRIVERS_PATH", XWAYLAND_GL_DRIVER_PATH, 1);
}
sl_execvp(args[0], args, sv[1]);
_exit(EXIT_FAILURE);
}
close(wm[1]);
ctx.xwayland_pid = pid;
} else {
pid = fork();
assert(pid != -1);
if (pid == 0) {
sl_execvp(ctx.runprog[0], ctx.runprog, sv[1]);
_exit(EXIT_FAILURE);
}
ctx.child_pid = pid;
}
close(sv[1]);
}
wl_client_add_destroy_listener(ctx.client, &client_destroy_listener);
do {
wl_display_flush_clients(ctx.host_display);
if (ctx.connection) {
if (ctx.needs_set_input_focus) {
sl_set_input_focus(&ctx, ctx.host_focus_window);
ctx.needs_set_input_focus = 0;
}
xcb_flush(ctx.connection);
}
if (wl_display_flush(ctx.display) < 0)
return EXIT_FAILURE;
} while (wl_event_loop_dispatch(event_loop, -1) != -1);
return EXIT_SUCCESS;
}
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