mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-10-01 03:27:36 +00:00
8e686357c4
With this we always roundtrip position change to the webbrowser. This avoids conflicts when things change from both directions (app and user). Also, we fake configure evens when there is no web client to ensure apps get the events.
692 lines
15 KiB
C
692 lines
15 KiB
C
#include <sys/mman.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "gdkbroadway-server.h"
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#include "gdkprivate-broadway.h"
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#include <glib.h>
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#include <glib/gprintf.h>
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#include <gio/gunixsocketaddress.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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typedef struct BroadwayInput BroadwayInput;
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struct _GdkBroadwayServer {
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GObject parent_instance;
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guint32 next_serial;
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GSocketConnection *connection;
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guint32 recv_buffer_size;
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guint8 recv_buffer[1024];
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guint process_input_idle;
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GList *incomming;
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};
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struct _GdkBroadwayServerClass
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{
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GObjectClass parent_class;
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};
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static gboolean input_available_cb (gpointer stream, gpointer user_data);
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G_DEFINE_TYPE (GdkBroadwayServer, gdk_broadway_server, G_TYPE_OBJECT)
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static void
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gdk_broadway_server_init (GdkBroadwayServer *server)
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{
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server->next_serial = 1;
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}
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static void
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gdk_broadway_server_finalize (GObject *object)
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{
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G_OBJECT_CLASS (gdk_broadway_server_parent_class)->finalize (object);
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}
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static void
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gdk_broadway_server_class_init (GdkBroadwayServerClass * class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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object_class->finalize = gdk_broadway_server_finalize;
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}
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gboolean
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_gdk_broadway_server_lookahead_event (GdkBroadwayServer *server,
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const char *types)
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{
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return FALSE;
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}
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gulong
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_gdk_broadway_server_get_next_serial (GdkBroadwayServer *server)
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{
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return (gulong)server->next_serial;
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}
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GdkBroadwayServer *
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_gdk_broadway_server_new (int port, GError **error)
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{
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GdkBroadwayServer *server;
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char *basename;
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GSocketClient *client;
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GSocketConnection *connection;
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GSocketAddress *address;
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GPollableInputStream *pollable;
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GInputStream *in;
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GSource *source;
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char *path;
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basename = g_strdup_printf ("broadway%d.socket", port);
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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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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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client = g_socket_client_new ();
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error = NULL;
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connection = g_socket_client_connect (client, G_SOCKET_CONNECTABLE (address), NULL, error);
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g_object_unref (address);
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g_object_unref (client);
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if (connection == NULL)
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return NULL;
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server = g_object_new (GDK_TYPE_BROADWAY_SERVER, NULL);
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server->connection = connection;
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in = g_io_stream_get_input_stream (G_IO_STREAM (server->connection));
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pollable = G_POLLABLE_INPUT_STREAM (in);
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source = g_pollable_input_stream_create_source (pollable, NULL);
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g_source_attach (source, NULL);
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g_source_set_callback (source, (GSourceFunc)input_available_cb, server, NULL);
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return server;
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}
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guint32
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_gdk_broadway_server_get_last_seen_time (GdkBroadwayServer *server)
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{
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return 0;
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}
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static guint32
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gdk_broadway_server_send_message_with_size (GdkBroadwayServer *server, BroadwayRequestBase *base,
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gsize size, guint32 type)
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{
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GOutputStream *out;
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gsize written;
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base->size = size;
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base->type = type;
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base->serial = server->next_serial++;
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out = g_io_stream_get_output_stream (G_IO_STREAM (server->connection));
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if (!g_output_stream_write_all (out, base, size, &written, NULL, NULL))
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{
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g_printerr ("Unable to write to server\n");
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exit (1);
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}
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g_assert (written == size);
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return base->serial;
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}
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#define gdk_broadway_server_send_message(_server, _msg, _type) \
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gdk_broadway_server_send_message_with_size(_server, (BroadwayRequestBase *)&_msg, sizeof (_msg), _type)
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static void
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parse_all_input (GdkBroadwayServer *server)
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{
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guint8 *p, *end;
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guint32 size;
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BroadwayReply *reply;
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p = server->recv_buffer;
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end = p + server->recv_buffer_size;
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while (p + sizeof (guint32) <= end)
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{
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memcpy (&size, p, sizeof (guint32));
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if (p + size > end)
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break;
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reply = g_memdup (p, size);
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p += size;
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server->incomming = g_list_append (server->incomming, reply);
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}
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if (p < end)
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memmove (server->recv_buffer, p, end - p);
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server->recv_buffer_size = end - p;
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}
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static void
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read_some_input_blocking (GdkBroadwayServer *server)
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{
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GInputStream *in;
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gssize res;
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in = g_io_stream_get_input_stream (G_IO_STREAM (server->connection));
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g_assert (server->recv_buffer_size < sizeof (server->recv_buffer));
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res = g_input_stream_read (in, &server->recv_buffer[server->recv_buffer_size],
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sizeof (server->recv_buffer) - server->recv_buffer_size,
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NULL, NULL);
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if (res <= 0)
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{
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g_printerr ("Unable to read from broadway server\n");
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exit (1);
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}
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server->recv_buffer_size += res;
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}
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static void
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read_some_input_nonblocking (GdkBroadwayServer *server)
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{
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GInputStream *in;
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GPollableInputStream *pollable;
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gssize res;
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GError *error;
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in = g_io_stream_get_input_stream (G_IO_STREAM (server->connection));
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pollable = G_POLLABLE_INPUT_STREAM (in);
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g_assert (server->recv_buffer_size < sizeof (server->recv_buffer));
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error = NULL;
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res = g_pollable_input_stream_read_nonblocking (pollable, &server->recv_buffer[server->recv_buffer_size],
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sizeof (server->recv_buffer) - server->recv_buffer_size,
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NULL, &error);
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if (res < 0 && g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
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{
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g_error_free (error);
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res = 0;
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}
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else if (res <= 0)
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{
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g_printerr ("Unable to read from broadway server: %s\n", error ? error->message : "eof");
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exit (1);
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}
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server->recv_buffer_size += res;
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}
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static BroadwayReply *
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find_response_by_serial (GdkBroadwayServer *server, guint32 serial)
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{
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GList *l;
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for (l = server->incomming; l != NULL; l = l->next)
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{
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BroadwayReply *reply = l->data;
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if (reply->base.in_reply_to == serial)
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return reply;
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}
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return NULL;
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}
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static void
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process_input_messages (GdkBroadwayServer *server)
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{
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BroadwayReply *reply;
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if (server->process_input_idle != 0)
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{
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g_source_remove (server->process_input_idle);
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server->process_input_idle = 0;
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}
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while (server->incomming)
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{
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reply = server->incomming->data;
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server->incomming =
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g_list_delete_link (server->incomming,
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server->incomming);
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if (reply->base.type == BROADWAY_REPLY_EVENT)
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_gdk_broadway_events_got_input (&reply->event.msg);
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else
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g_warning ("Unhandled reply type %d\n", reply->base.type);
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g_free (reply);
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}
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}
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static gboolean
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process_input_idle_cb (GdkBroadwayServer *server)
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{
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server->process_input_idle = 0;
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process_input_messages (server);
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return G_SOURCE_REMOVE;
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}
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static void
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queue_process_input_at_idle (GdkBroadwayServer *server)
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{
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if (server->process_input_idle == 0)
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server->process_input_idle =
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g_idle_add_full (G_PRIORITY_DEFAULT, (GSourceFunc)process_input_idle_cb, server, NULL);
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}
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static gboolean
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input_available_cb (gpointer stream, gpointer user_data)
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{
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GdkBroadwayServer *server = user_data;
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read_some_input_nonblocking (server);
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parse_all_input (server);
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process_input_messages (server);
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return G_SOURCE_CONTINUE;
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}
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static BroadwayReply *
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gdk_broadway_server_wait_for_reply (GdkBroadwayServer *server,
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guint32 serial)
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{
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BroadwayReply *reply;
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while (TRUE)
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{
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reply = find_response_by_serial (server, serial);
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if (reply)
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{
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server->incomming = g_list_remove (server->incomming, reply);
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break;
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}
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read_some_input_blocking (server);
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parse_all_input (server);
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}
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queue_process_input_at_idle (server);
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return reply;
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}
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void
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_gdk_broadway_server_flush (GdkBroadwayServer *server)
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{
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BroadwayRequestFlush msg;
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gdk_broadway_server_send_message(server, msg, BROADWAY_REQUEST_FLUSH);
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}
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void
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_gdk_broadway_server_sync (GdkBroadwayServer *server)
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{
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BroadwayRequestSync msg;
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guint32 serial;
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BroadwayReply *reply;
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serial = gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_SYNC);
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reply = gdk_broadway_server_wait_for_reply (server, serial);
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g_assert (reply->base.type == BROADWAY_REPLY_SYNC);
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g_free (reply);
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return;
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}
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void
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_gdk_broadway_server_query_mouse (GdkBroadwayServer *server,
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guint32 *toplevel,
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gint32 *root_x,
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gint32 *root_y,
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guint32 *mask)
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{
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BroadwayRequestQueryMouse msg;
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guint32 serial;
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BroadwayReply *reply;
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serial = gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_QUERY_MOUSE);
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reply = gdk_broadway_server_wait_for_reply (server, serial);
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g_assert (reply->base.type == BROADWAY_REPLY_QUERY_MOUSE);
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if (toplevel)
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*toplevel = reply->query_mouse.toplevel;
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if (root_x)
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*root_x = reply->query_mouse.root_x;
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if (root_y)
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*root_y = reply->query_mouse.root_y;
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if (mask)
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*mask = reply->query_mouse.mask;
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g_free (reply);
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}
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guint32
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_gdk_broadway_server_new_window (GdkBroadwayServer *server,
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int x,
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int y,
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int width,
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int height,
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gboolean is_temp)
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{
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BroadwayRequestNewWindow msg;
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guint32 serial, id;
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BroadwayReply *reply;
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msg.x = x;
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msg.y = y;
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msg.width = width;
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msg.height = height;
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msg.is_temp = is_temp;
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serial = gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_NEW_WINDOW);
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reply = gdk_broadway_server_wait_for_reply (server, serial);
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g_assert (reply->base.type == BROADWAY_REPLY_NEW_WINDOW);
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id = reply->new_window.id;
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g_free (reply);
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return id;
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}
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void
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_gdk_broadway_server_destroy_window (GdkBroadwayServer *server,
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gint id)
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{
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BroadwayRequestDestroyWindow msg;
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msg.id = id;
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gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_DESTROY_WINDOW);
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}
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gboolean
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_gdk_broadway_server_window_show (GdkBroadwayServer *server,
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gint id)
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{
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BroadwayRequestShowWindow msg;
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msg.id = id;
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gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_SHOW_WINDOW);
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return TRUE;
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}
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gboolean
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_gdk_broadway_server_window_hide (GdkBroadwayServer *server,
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gint id)
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{
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BroadwayRequestHideWindow msg;
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msg.id = id;
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gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_HIDE_WINDOW);
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return TRUE;
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}
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void
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_gdk_broadway_server_window_set_transient_for (GdkBroadwayServer *server,
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gint id, gint parent)
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{
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BroadwayRequestSetTransientFor msg;
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msg.id = id;
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msg.parent = parent;
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gdk_broadway_server_send_message (server, msg,
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BROADWAY_REQUEST_SET_TRANSIENT_FOR);
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}
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gboolean
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_gdk_broadway_server_window_translate (GdkBroadwayServer *server,
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gint id,
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cairo_region_t *area,
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gint dx,
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gint dy)
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{
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BroadwayRequestTranslate *msg;
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cairo_rectangle_int_t rect;
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int i, n_rects;
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gsize msg_size;
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n_rects = cairo_region_num_rectangles (area);
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msg_size = sizeof (BroadwayRequestTranslate) + (n_rects-1) * sizeof (BroadwayRect);
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msg = g_malloc (msg_size);
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msg->id = id;
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msg->dx = dx;
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msg->dy = dy;
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msg->n_rects = n_rects;
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for (i = 0; i < n_rects; i++)
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{
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cairo_region_get_rectangle (area, i, &rect);
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msg->rects[i].x = rect.x;
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msg->rects[i].y = rect.y;
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msg->rects[i].width = rect.width;
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msg->rects[i].height = rect.height;
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}
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gdk_broadway_server_send_message_with_size (server, (BroadwayRequestBase *)msg, msg_size,
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BROADWAY_REQUEST_TRANSLATE);
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g_free (msg);
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return TRUE;
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}
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static char
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make_valid_fs_char (char c)
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{
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if (c == 0 || c == '/')
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return c + 1;
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return c;
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}
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/* name must have at least space for 34 bytes */
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static int
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create_random_shm (char *name)
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{
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guint32 r;
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int i, o, fd;
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while (TRUE)
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{
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o = 0;
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name[o++] = '/';
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for (i = 0; i < 32/4; i++)
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{
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r = g_random_int ();
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name[o++] = make_valid_fs_char ((r >> 0) & 0xff);
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name[o++] = make_valid_fs_char ((r >> 8) & 0xff);
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name[o++] = make_valid_fs_char ((r >> 16) & 0xff);
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name[o++] = make_valid_fs_char ((r >> 24) & 0xff);
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}
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name[o++] = 0;
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fd = shm_open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
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if (fd >= 0)
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return fd;
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if (errno != EEXIST)
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{
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g_printerr ("Unable to allocate shared mem for window");
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exit (1);
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}
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}
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}
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static const cairo_user_data_key_t gdk_broadway_shm_cairo_key;
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typedef struct {
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char name[34];
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void *data;
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gsize data_size;
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} BroadwayShmSurfaceData;
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static void
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shm_data_destroy (void *_data)
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{
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BroadwayShmSurfaceData *data = _data;
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munmap (data->data, data->data_size);
|
|
shm_unlink (data->name);
|
|
g_free (data);
|
|
}
|
|
|
|
cairo_surface_t *
|
|
_gdk_broadway_server_create_surface (int width,
|
|
int height)
|
|
{
|
|
BroadwayShmSurfaceData *data;
|
|
cairo_surface_t *surface;
|
|
int res;
|
|
int fd;
|
|
|
|
data = g_new (BroadwayShmSurfaceData, 1);
|
|
data->data_size = width * height * sizeof (guint32);
|
|
|
|
fd = create_random_shm (data->name);
|
|
|
|
res = ftruncate (fd, data->data_size);
|
|
g_assert (res != -1);
|
|
|
|
data->data = mmap(0, data->data_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
|
|
(void) close(fd);
|
|
|
|
surface = cairo_image_surface_create_for_data ((guchar *)data->data,
|
|
CAIRO_FORMAT_RGB24, width, height, width * sizeof (guint32));
|
|
g_assert (surface != NULL);
|
|
|
|
cairo_surface_set_user_data (surface, &gdk_broadway_shm_cairo_key,
|
|
data, shm_data_destroy);
|
|
|
|
return surface;
|
|
}
|
|
|
|
void
|
|
_gdk_broadway_server_window_update (GdkBroadwayServer *server,
|
|
gint id,
|
|
cairo_surface_t *surface)
|
|
{
|
|
BroadwayRequestUpdate msg;
|
|
BroadwayShmSurfaceData *data;
|
|
|
|
if (surface == NULL)
|
|
return;
|
|
|
|
data = cairo_surface_get_user_data (surface, &gdk_broadway_shm_cairo_key);
|
|
g_assert (data != NULL);
|
|
|
|
msg.id = id;
|
|
memcpy (msg.name, data->name, 34);
|
|
msg.width = cairo_image_surface_get_width (surface);
|
|
msg.height = cairo_image_surface_get_height (surface);
|
|
|
|
gdk_broadway_server_send_message (server, msg,
|
|
BROADWAY_REQUEST_UPDATE);
|
|
}
|
|
|
|
gboolean
|
|
_gdk_broadway_server_window_move_resize (GdkBroadwayServer *server,
|
|
gint id,
|
|
gboolean with_move,
|
|
int x,
|
|
int y,
|
|
int width,
|
|
int height)
|
|
{
|
|
BroadwayRequestMoveResize msg;
|
|
|
|
msg.id = id;
|
|
msg.with_move = with_move;
|
|
msg.x = x;
|
|
msg.y = y;
|
|
msg.width = width;
|
|
msg.height = height;
|
|
|
|
gdk_broadway_server_send_message (server, msg,
|
|
BROADWAY_REQUEST_MOVE_RESIZE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GdkGrabStatus
|
|
_gdk_broadway_server_grab_pointer (GdkBroadwayServer *server,
|
|
gint id,
|
|
gboolean owner_events,
|
|
guint32 event_mask,
|
|
guint32 time_)
|
|
{
|
|
BroadwayRequestGrabPointer msg;
|
|
guint32 serial, status;
|
|
BroadwayReply *reply;
|
|
|
|
msg.id = id;
|
|
msg.owner_events = owner_events;
|
|
msg.event_mask = event_mask;
|
|
msg.time_ = time_;
|
|
|
|
serial = gdk_broadway_server_send_message (server, msg,
|
|
BROADWAY_REQUEST_GRAB_POINTER);
|
|
reply = gdk_broadway_server_wait_for_reply (server, serial);
|
|
|
|
g_assert (reply->base.type == BROADWAY_REPLY_GRAB_POINTER);
|
|
|
|
status = reply->grab_pointer.status;
|
|
|
|
g_free (reply);
|
|
|
|
return status;
|
|
}
|
|
|
|
guint32
|
|
_gdk_broadway_server_ungrab_pointer (GdkBroadwayServer *server,
|
|
guint32 time_)
|
|
{
|
|
BroadwayRequestUngrabPointer msg;
|
|
guint32 serial, status;
|
|
BroadwayReply *reply;
|
|
|
|
msg.time_ = time_;
|
|
|
|
serial = gdk_broadway_server_send_message (server, msg,
|
|
BROADWAY_REQUEST_UNGRAB_POINTER);
|
|
reply = gdk_broadway_server_wait_for_reply (server, serial);
|
|
|
|
g_assert (reply->base.type == BROADWAY_REPLY_UNGRAB_POINTER);
|
|
|
|
status = reply->ungrab_pointer.status;
|
|
|
|
g_free (reply);
|
|
|
|
return status;
|
|
}
|