mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-06 00:30:08 +00:00
4226f97d54
We add a custom im module for broadway that calls some broadway specific APIs to show/hide the keyboard on focus in/out. We then forward this to the browser, and on the ipad we focus an input field to activate the keyboard.
588 lines
16 KiB
C
588 lines
16 KiB
C
#include "config.h"
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#include <string.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <glib.h>
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#include <gio/gio.h>
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#ifdef G_OS_UNIX
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#include <gio/gunixsocketaddress.h>
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#endif
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#include "broadway-server.h"
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BroadwayServer *server;
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GList *clients;
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static guint32 client_id_count = 1;
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/* Serials:
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*
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* Broadway tracks serials for all clients primarily to get the right behaviour wrt
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* grabs. Each request the client sends gets an increasing per-client serial number, starting
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* at 1. Thus, the client can now when a mouse event is seen whether the mouse event was
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* sent before or after the server saw the grab request from the client (as this affects how
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* the event is handled).
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*
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* There is only a single stream of increasing serials sent from the daemon to the web browser
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* though, called "daemon serials", so we need to map back from the daemon serials to the client
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* serials when we send an event to a client. So, each client keeps track of the mappings
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* between its serials and daemon serials for any outstanding requests.
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*
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* There is some additional complexity in that there may be multiple consecutive web browser
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* sessions, so we need to keep track of the last daemon serial used inbetween each web client
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* connection so that the daemon serials can be strictly increasing.
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*/
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typedef struct {
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guint32 client_serial;
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guint32 daemon_serial;
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} BroadwaySerialMapping;
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typedef struct {
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guint32 id;
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GSocketConnection *connection;
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GBufferedInputStream *in;
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GSList *serial_mappings;
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GList *windows;
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guint disconnect_idle;
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} BroadwayClient;
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static void
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client_free (BroadwayClient *client)
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{
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g_assert (client->windows == NULL);
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g_assert (client->disconnect_idle == 0);
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clients = g_list_remove (clients, client);
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g_object_unref (client->connection);
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g_object_unref (client->in);
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g_slist_free_full (client->serial_mappings, g_free);
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g_free (client);
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}
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static void
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client_disconnected (BroadwayClient *client)
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{
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GList *l;
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if (client->disconnect_idle != 0)
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{
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g_source_remove (client->disconnect_idle);
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client->disconnect_idle = 0;
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}
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for (l = client->windows; l != NULL; l = l->next)
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broadway_server_destroy_window (server,
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GPOINTER_TO_UINT (l->data));
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g_list_free (client->windows);
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client->windows = NULL;
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broadway_server_flush (server);
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client_free (client);
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}
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static gboolean
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disconnect_idle_cb (BroadwayClient *client)
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{
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client->disconnect_idle = 0;
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client_disconnected (client);
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return G_SOURCE_REMOVE;
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}
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static void
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client_disconnect_in_idle (BroadwayClient *client)
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{
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if (client->disconnect_idle == 0)
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client->disconnect_idle =
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g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc)disconnect_idle_cb, client, NULL);
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}
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static void
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send_reply (BroadwayClient *client,
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BroadwayRequest *request,
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BroadwayReply *reply,
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gsize size,
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guint32 type)
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{
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GOutputStream *output;
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reply->base.size = size;
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reply->base.in_reply_to = request ? request->base.serial : 0;
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reply->base.type = type;
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output = g_io_stream_get_output_stream (G_IO_STREAM (client->connection));
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if (!g_output_stream_write_all (output, reply, size, NULL, NULL, NULL))
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{
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g_printerr ("can't write to client");
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client_disconnect_in_idle (client);
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}
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}
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void
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add_client_serial_mapping (BroadwayClient *client,
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guint32 client_serial,
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guint32 daemon_serial)
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{
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BroadwaySerialMapping *map;
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GSList *last;
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last = g_slist_last (client->serial_mappings);
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if (last != NULL)
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{
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map = last->data;
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/* If we have no web client, don't grow forever */
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if (map->daemon_serial == daemon_serial)
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{
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map->client_serial = client_serial;
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return;
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}
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}
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map = g_new0 (BroadwaySerialMapping, 1);
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map->client_serial = client_serial;
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map->daemon_serial = daemon_serial;
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client->serial_mappings = g_slist_append (client->serial_mappings, map);
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}
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/* Returns the latest seen client serial at the time we sent
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a daemon request to the browser with a specific daemon serial */
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guint32
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get_client_serial (BroadwayClient *client, guint32 daemon_serial)
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{
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BroadwaySerialMapping *map;
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GSList *l, *found;
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guint32 client_serial = 0;
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found = NULL;
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for (l = client->serial_mappings; l != NULL; l = l->next)
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{
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map = l->data;
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if (map->daemon_serial <= daemon_serial)
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{
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found = l;
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client_serial = map->client_serial;
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}
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else
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break;
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}
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/* Remove mappings before the found one, they will never more be used */
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while (found != NULL &&
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client->serial_mappings != found)
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{
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g_free (client->serial_mappings->data);
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client->serial_mappings =
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g_slist_delete_link (client->serial_mappings, client->serial_mappings);
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}
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return client_serial;
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}
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static void
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client_handle_request (BroadwayClient *client,
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BroadwayRequest *request)
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{
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BroadwayReplyNewWindow reply_new_window;
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BroadwayReplySync reply_sync;
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BroadwayReplyQueryMouse reply_query_mouse;
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BroadwayReplyGrabPointer reply_grab_pointer;
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BroadwayReplyUngrabPointer reply_ungrab_pointer;
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cairo_surface_t *surface;
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guint32 before_serial, now_serial;
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before_serial = broadway_server_get_next_serial (server);
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switch (request->base.type)
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{
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case BROADWAY_REQUEST_NEW_WINDOW:
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reply_new_window.id =
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broadway_server_new_window (server,
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request->new_window.x,
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request->new_window.y,
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request->new_window.width,
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request->new_window.height,
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request->new_window.is_temp);
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client->windows =
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g_list_prepend (client->windows,
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GUINT_TO_POINTER (reply_new_window.id));
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send_reply (client, request, (BroadwayReply *)&reply_new_window, sizeof (reply_new_window),
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BROADWAY_REPLY_NEW_WINDOW);
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break;
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case BROADWAY_REQUEST_FLUSH:
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broadway_server_flush (server);
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break;
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case BROADWAY_REQUEST_SYNC:
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broadway_server_flush (server);
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send_reply (client, request, (BroadwayReply *)&reply_sync, sizeof (reply_sync),
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BROADWAY_REPLY_SYNC);
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break;
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case BROADWAY_REQUEST_QUERY_MOUSE:
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broadway_server_query_mouse (server,
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&reply_query_mouse.toplevel,
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&reply_query_mouse.root_x,
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&reply_query_mouse.root_y,
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&reply_query_mouse.mask);
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send_reply (client, request, (BroadwayReply *)&reply_query_mouse, sizeof (reply_query_mouse),
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BROADWAY_REPLY_QUERY_MOUSE);
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break;
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case BROADWAY_REQUEST_DESTROY_WINDOW:
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client->windows =
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g_list_remove (client->windows,
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GUINT_TO_POINTER (request->destroy_window.id));
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broadway_server_destroy_window (server, request->destroy_window.id);
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break;
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case BROADWAY_REQUEST_SHOW_WINDOW:
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broadway_server_window_show (server, request->show_window.id);
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break;
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case BROADWAY_REQUEST_HIDE_WINDOW:
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broadway_server_window_hide (server, request->hide_window.id);
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break;
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case BROADWAY_REQUEST_SET_TRANSIENT_FOR:
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broadway_server_window_set_transient_for (server,
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request->set_transient_for.id,
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request->set_transient_for.parent);
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break;
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case BROADWAY_REQUEST_UPDATE:
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surface = broadway_server_open_surface (server,
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request->update.id,
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request->update.name,
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request->update.width,
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request->update.height);
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if (surface != NULL)
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{
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broadway_server_window_update (server,
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request->update.id,
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surface);
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cairo_surface_destroy (surface);
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}
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break;
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case BROADWAY_REQUEST_MOVE_RESIZE:
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broadway_server_window_move_resize (server,
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request->move_resize.id,
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request->move_resize.with_move,
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request->move_resize.x,
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request->move_resize.y,
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request->move_resize.width,
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request->move_resize.height);
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break;
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case BROADWAY_REQUEST_GRAB_POINTER:
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reply_grab_pointer.status =
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broadway_server_grab_pointer (server,
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client->id,
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request->grab_pointer.id,
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request->grab_pointer.owner_events,
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request->grab_pointer.event_mask,
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request->grab_pointer.time_);
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send_reply (client, request, (BroadwayReply *)&reply_grab_pointer, sizeof (reply_grab_pointer),
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BROADWAY_REPLY_GRAB_POINTER);
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break;
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case BROADWAY_REQUEST_UNGRAB_POINTER:
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reply_ungrab_pointer.status =
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broadway_server_ungrab_pointer (server,
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request->ungrab_pointer.time_);
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send_reply (client, request, (BroadwayReply *)&reply_ungrab_pointer, sizeof (reply_ungrab_pointer),
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BROADWAY_REPLY_UNGRAB_POINTER);
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break;
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case BROADWAY_REQUEST_FOCUS_WINDOW:
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broadway_server_focus_window (server, request->focus_window.id);
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break;
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case BROADWAY_REQUEST_SET_SHOW_KEYBOARD:
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broadway_server_set_show_keyboard (server, request->set_show_keyboard.show_keyboard);
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break;
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default:
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g_warning ("Unknown request of type %d\n", request->base.type);
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}
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now_serial = broadway_server_get_next_serial (server);
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/* If we sent a new output request, map that this client serial to that, otherwise
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update old mapping for previously sent daemon serial */
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if (now_serial != before_serial)
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add_client_serial_mapping (client,
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request->base.serial,
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before_serial);
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else
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add_client_serial_mapping (client,
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request->base.serial,
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before_serial - 1);
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}
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static void
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client_fill_cb (GObject *source_object,
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GAsyncResult *result,
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gpointer user_data)
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{
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BroadwayClient *client = user_data;
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gssize res;
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res = g_buffered_input_stream_fill_finish (client->in, result, NULL);
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if (res > 0)
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{
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guint32 size;
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gsize count, remaining;
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guint8 *buffer;
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buffer = (guint8 *)g_buffered_input_stream_peek_buffer (client->in, &count);
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remaining = count;
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while (remaining >= sizeof (guint32))
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{
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memcpy (&size, buffer, sizeof (guint32));
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if (size <= remaining)
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{
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client_handle_request (client, (BroadwayRequest *)buffer);
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remaining -= size;
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buffer += size;
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}
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}
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/* This is guaranteed not to block */
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g_input_stream_skip (G_INPUT_STREAM (client->in), count - remaining, NULL, NULL);
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g_buffered_input_stream_fill_async (client->in,
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4*1024,
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0,
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NULL,
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client_fill_cb, client);
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}
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else
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{
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client_disconnected (client);
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}
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}
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static gboolean
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incoming_client (GSocketService *service,
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GSocketConnection *connection,
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GObject *source_object)
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{
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BroadwayClient *client;
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GInputStream *input;
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BroadwayInputMsg ev = { {0} };
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client = g_new0 (BroadwayClient, 1);
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client->id = client_id_count++;
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client->connection = g_object_ref (connection);
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input = g_io_stream_get_input_stream (G_IO_STREAM (client->connection));
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client->in = (GBufferedInputStream *)g_buffered_input_stream_new (input);
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clients = g_list_prepend (clients, client);
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g_buffered_input_stream_fill_async (client->in,
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4*1024,
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0,
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NULL,
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client_fill_cb, client);
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/* Send initial resize notify */
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ev.base.type = BROADWAY_EVENT_SCREEN_SIZE_CHANGED;
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ev.base.serial = broadway_server_get_next_serial (server) - 1;
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ev.base.time = broadway_server_get_last_seen_time (server);
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broadway_server_get_screen_size (server,
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&ev.screen_resize_notify.width,
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&ev.screen_resize_notify.height);
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broadway_events_got_input (&ev,
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client->id);
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return TRUE;
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}
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int
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main (int argc, char *argv[])
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{
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GError *error = NULL;
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GOptionContext *context;
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GMainLoop *loop;
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GInetAddress *inet;
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GSocketAddress *address;
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GSocketService *listener;
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char *path, *basename;
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char *http_address = NULL;
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int http_port = 0;
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char *display;
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int port = 0;
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const GOptionEntry entries[] = {
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{ "port", 'p', 0, G_OPTION_ARG_INT, &http_port, "Httpd port", "PORT" },
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{ "address", 'a', 0, G_OPTION_ARG_STRING, &http_address, "Ip address to bind to ", "ADDRESS" },
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{ NULL }
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};
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context = g_option_context_new ("[:DISPLAY] - broadway display daemon");
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g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
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if (!g_option_context_parse (context, &argc, &argv, &error))
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{
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g_printerr ("option parsing failed: %s\n", error->message);
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exit (1);
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}
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display = NULL;
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if (argc > 1)
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{
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if (*argv[1] != ':')
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{
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g_printerr ("Usage broadwayd [:DISPLAY]\n");
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exit (1);
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}
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display = argv[1];
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}
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if (display == NULL)
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{
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#ifdef G_OS_UNIX
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display = ":0";
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#else
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display = ":tcp";
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#endif
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}
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if (g_str_has_prefix (display, ":tcp"))
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{
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port = strtol (display + strlen (":tcp"), NULL, 10);
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inet = g_inet_address_new_from_string ("127.0.0.1");
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g_print ("Listening on 127.0.0.1:%d\n", port + 9090);
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address = g_inet_socket_address_new (inet, port + 9090);
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g_object_unref (inet);
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}
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#ifdef G_OS_UNIX
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else if (display[0] == ':' && g_ascii_isdigit(display[1]))
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{
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port = strtol (display + strlen (":"), NULL, 10);
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basename = g_strdup_printf ("broadway%d.socket", port + 1);
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path = g_build_filename (g_get_user_runtime_dir (), basename, NULL);
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g_free (basename);
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g_print ("Listening on %s\n", path);
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address = g_unix_socket_address_new_with_type (path, -1,
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G_UNIX_SOCKET_ADDRESS_ABSTRACT);
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g_free (path);
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}
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#endif
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else
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{
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g_printerr ("Failed to parse display %s\n", display);
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exit (1);
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}
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if (http_port == 0)
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http_port = 8080 + port;
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server = broadway_server_new (http_address, http_port, &error);
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if (server == NULL)
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{
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g_printerr ("%s\n", error->message);
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return 1;
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}
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listener = g_socket_service_new ();
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if (!g_socket_listener_add_address (G_SOCKET_LISTENER (listener),
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address,
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G_SOCKET_TYPE_STREAM,
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G_SOCKET_PROTOCOL_DEFAULT,
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G_OBJECT (server),
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NULL,
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&error))
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{
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g_printerr ("Can't listen: %s\n", error->message);
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return 1;
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}
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g_object_unref (address);
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g_signal_connect (listener, "incoming", G_CALLBACK (incoming_client), NULL);
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g_socket_service_start (G_SOCKET_SERVICE (listener));
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loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (loop);
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return 0;
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}
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static gsize
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get_event_size (int type)
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{
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switch (type)
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{
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|
case BROADWAY_EVENT_ENTER:
|
|
case BROADWAY_EVENT_LEAVE:
|
|
return sizeof (BroadwayInputCrossingMsg);
|
|
case BROADWAY_EVENT_POINTER_MOVE:
|
|
return sizeof (BroadwayInputPointerMsg);
|
|
case BROADWAY_EVENT_BUTTON_PRESS:
|
|
case BROADWAY_EVENT_BUTTON_RELEASE:
|
|
return sizeof (BroadwayInputButtonMsg);
|
|
case BROADWAY_EVENT_SCROLL:
|
|
return sizeof (BroadwayInputScrollMsg);
|
|
case BROADWAY_EVENT_TOUCH:
|
|
return sizeof (BroadwayInputTouchMsg);
|
|
case BROADWAY_EVENT_KEY_PRESS:
|
|
case BROADWAY_EVENT_KEY_RELEASE:
|
|
return sizeof (BroadwayInputKeyMsg);
|
|
case BROADWAY_EVENT_GRAB_NOTIFY:
|
|
case BROADWAY_EVENT_UNGRAB_NOTIFY:
|
|
return sizeof (BroadwayInputGrabReply);
|
|
case BROADWAY_EVENT_CONFIGURE_NOTIFY:
|
|
return sizeof (BroadwayInputConfigureNotify);
|
|
case BROADWAY_EVENT_DELETE_NOTIFY:
|
|
return sizeof (BroadwayInputDeleteNotify);
|
|
case BROADWAY_EVENT_SCREEN_SIZE_CHANGED:
|
|
return sizeof (BroadwayInputScreenResizeNotify);
|
|
case BROADWAY_EVENT_FOCUS:
|
|
return sizeof (BroadwayInputFocusMsg);
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
broadway_events_got_input (BroadwayInputMsg *message,
|
|
gint32 client_id)
|
|
{
|
|
GList *l;
|
|
BroadwayReplyEvent reply_event;
|
|
gsize size;
|
|
guint32 daemon_serial;
|
|
|
|
size = get_event_size (message->base.type);
|
|
g_assert (sizeof (BroadwayReplyBase) + size <= sizeof (BroadwayReplyEvent));
|
|
|
|
memset (&reply_event, 0, sizeof (BroadwayReplyEvent));
|
|
daemon_serial = message->base.serial;
|
|
|
|
memcpy (&reply_event.msg, message, size);
|
|
|
|
for (l = clients; l != NULL; l = l->next)
|
|
{
|
|
BroadwayClient *client = l->data;
|
|
|
|
if (client_id == -1 ||
|
|
client->id == client_id)
|
|
{
|
|
reply_event.msg.base.serial = get_client_serial (client, daemon_serial);
|
|
|
|
send_reply (client, NULL, (BroadwayReply *)&reply_event,
|
|
G_STRUCT_OFFSET (BroadwayReplyEvent, msg) + size,
|
|
BROADWAY_REPLY_EVENT);
|
|
}
|
|
}
|
|
}
|