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authorPerberos <[email protected]>2011-11-09 18:17:43 -0300
committerPerberos <[email protected]>2011-11-09 18:17:43 -0300
commitf6ce926719943751cf65cacde7fae050593eb2d6 (patch)
tree9224d1751678cf2d1fbd0431f128b711311c0287 /shell/ev-file-monitor.c
downloadatril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.bz2
atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.xz
inicial
Diffstat (limited to 'shell/ev-file-monitor.c')
-rw-r--r--shell/ev-file-monitor.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/shell/ev-file-monitor.c b/shell/ev-file-monitor.c
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+/* ev-file-monitor.c
+ * this file is part of evince, a mate document viewer
+ *
+ * Copyright (C) 2008 Carlos Garcia Campos <[email protected]>
+ *
+ * Evince is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Evince is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+
+#include <glib.h>
+#include <gio/gio.h>
+
+#include "ev-file-monitor.h"
+
+enum {
+ CHANGED,
+ N_SIGNALS
+};
+
+struct _EvFileMonitorPrivate {
+ GFileMonitor *monitor;
+
+ guint timeout_id;
+};
+
+static void ev_file_monitor_timeout_start (EvFileMonitor *ev_monitor);
+static void ev_file_monitor_timeout_stop (EvFileMonitor *ev_monitor);
+static void ev_file_monitor_changed_cb (GFileMonitor *monitor,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event_type,
+ EvFileMonitor *ev_monitor);
+
+#define EV_FILE_MONITOR_GET_PRIVATE(object) \
+ (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_FILE_MONITOR, EvFileMonitorPrivate))
+
+G_DEFINE_TYPE (EvFileMonitor, ev_file_monitor, G_TYPE_OBJECT)
+
+static guint signals[N_SIGNALS];
+
+static void
+ev_file_monitor_init (EvFileMonitor *ev_monitor)
+{
+ ev_monitor->priv = EV_FILE_MONITOR_GET_PRIVATE (ev_monitor);
+}
+
+static void
+ev_file_monitor_finalize (GObject *object)
+{
+ EvFileMonitor *ev_monitor = EV_FILE_MONITOR (object);
+
+ ev_file_monitor_timeout_stop (ev_monitor);
+
+ if (ev_monitor->priv->monitor) {
+ g_signal_handlers_disconnect_by_func (ev_monitor->priv->monitor,
+ ev_file_monitor_changed_cb,
+ ev_monitor);
+ g_object_unref (ev_monitor->priv->monitor);
+ ev_monitor->priv->monitor = NULL;
+ }
+
+ G_OBJECT_CLASS (ev_file_monitor_parent_class)->finalize (object);
+}
+
+static void
+ev_file_monitor_class_init (EvFileMonitorClass *klass)
+{
+ GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
+
+ g_type_class_add_private (g_object_class, sizeof (EvFileMonitorPrivate));
+
+ g_object_class->finalize = ev_file_monitor_finalize;
+
+ /* Signals */
+ signals[CHANGED] =
+ g_signal_new ("changed",
+ EV_TYPE_FILE_MONITOR,
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (EvFileMonitorClass, changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+}
+
+static gboolean
+timeout_cb (EvFileMonitor *ev_monitor)
+{
+ g_signal_emit (ev_monitor, signals[CHANGED], 0);
+
+ ev_monitor->priv->timeout_id = 0;
+ return FALSE;
+}
+
+static void
+ev_file_monitor_timeout_start (EvFileMonitor *ev_monitor)
+{
+ ev_file_monitor_timeout_stop (ev_monitor);
+
+ ev_monitor->priv->timeout_id =
+ g_timeout_add_seconds (5, (GSourceFunc)timeout_cb, ev_monitor);
+}
+
+static void
+ev_file_monitor_timeout_stop (EvFileMonitor *ev_monitor)
+{
+ if (ev_monitor->priv->timeout_id > 0) {
+ g_source_remove (ev_monitor->priv->timeout_id);
+ ev_monitor->priv->timeout_id = 0;
+ }
+}
+
+static void
+ev_file_monitor_changed_cb (GFileMonitor *monitor,
+ GFile *file,
+ GFile *other_file,
+ GFileMonitorEvent event_type,
+ EvFileMonitor *ev_monitor)
+{
+ switch (event_type) {
+ case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
+ ev_file_monitor_timeout_stop (ev_monitor);
+ g_signal_emit (ev_monitor, signals[CHANGED], 0);
+
+ break;
+ case G_FILE_MONITOR_EVENT_CHANGED:
+ ev_file_monitor_timeout_start (ev_monitor);
+ break;
+ default:
+ break;
+ }
+}
+
+EvFileMonitor *
+ev_file_monitor_new (const gchar *uri)
+{
+ EvFileMonitor *ev_monitor;
+ GFile *file;
+ GError *error = NULL;
+
+ ev_monitor = EV_FILE_MONITOR (g_object_new (EV_TYPE_FILE_MONITOR, NULL));
+
+ file = g_file_new_for_uri (uri);
+ ev_monitor->priv->monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, &error);
+ if (ev_monitor->priv->monitor) {
+ g_signal_connect (ev_monitor->priv->monitor, "changed",
+ G_CALLBACK (ev_file_monitor_changed_cb), ev_monitor);
+ } else if (error) {
+ g_warning ("%s", error->message);
+ g_error_free (error);
+ }
+
+ g_object_unref (file);
+
+ return ev_monitor;
+}