[spice-gtk][PATCH v3] Added INFO messages about a file transfer

[Pavel Grunt <pgrunt@xxxxxxxxxx>]

When a file transfer starts / finishes an information message is printed (in INFO log level).
Also INFO messages about the transfer progress are printed.

---
changes since v3:
 - all the logging is now placed just in 'gtk/spice-widget.c'
 
 gtk/spice-widget.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 68 insertions(+), 2 deletions(-)

diff --git a/gtk/spice-widget.c b/gtk/spice-widget.c
index 1220030..ee344f8 100644
--- a/gtk/spice-widget.c
+++ b/gtk/spice-widget.c
@@ -473,6 +473,61 @@ static gboolean grab_broken(SpiceDisplay *self, GdkEventGrabBroken *event,
     return false;
 }
 
+typedef struct FileTransferInfo {
+    gchar *basename;
+    GDateTime *start_time;
+    GDateTime *last_update;
+} FileTransferInfo;
+
+static void file_progress_callback(goffset current_num_bytes,
+                                   goffset total_num_bytes,
+                                   gpointer user_data)
+{
+    GDateTime *now;
+    GTimeSpan diff;
+    const GTimeSpan interval = 20 * G_TIME_SPAN_SECOND;
+    FileTransferInfo *file_transfer_info = user_data;
+
+    if (file_transfer_info == NULL)
+        return;
+
+    now = g_date_time_new_now_local();
+
+    if (current_num_bytes == total_num_bytes) {
+        const double mega = 1048576;
+        double seconds, speed_mbps;
+
+        diff = g_date_time_difference(now, file_transfer_info->start_time);
+        seconds = (double) diff / G_TIME_SPAN_SECOND;
+        speed_mbps = (double) total_num_bytes / mega / seconds;
+
+        g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO,
+              "transferred file %s of %.2f kB size in %.2f seconds (%.2f MB/s)",
+              file_transfer_info->basename, total_num_bytes / 1000.0,
+              seconds, speed_mbps);
+
+        g_free(file_transfer_info->basename);
+        g_date_time_unref(file_transfer_info->start_time);
+        g_date_time_unref(file_transfer_info->last_update);
+        g_date_time_unref(now);
+        g_free(file_transfer_info);
+        file_transfer_info = NULL;
+        return;
+    }
+
+    diff = g_date_time_difference(now, file_transfer_info->last_update);
+    if (diff < interval) {
+        g_date_time_unref(now);
+        return;
+    }
+
+    g_date_time_unref(file_transfer_info->last_update);
+    file_transfer_info->last_update = now;
+
+    g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "transferred %.2f%% of the file %s",
+          100.0 * current_num_bytes / total_num_bytes, file_transfer_info->basename);
+}
+
 static void drag_data_received_callback(SpiceDisplay *self,
                                         GdkDragContext *drag_context,
                                         gint x,
@@ -488,6 +543,7 @@ static void drag_data_received_callback(SpiceDisplay *self,
     SpiceDisplayPrivate *d = self->priv;
     int i = 0;
     GFile **files;
+    FileTransferInfo *file_transfer_info = NULL;
 
     /* We get a buf like:
      * file:///root/a.txt\r\nfile:///root/b.txt\r\n
@@ -504,8 +560,18 @@ static void drag_data_received_callback(SpiceDisplay *self,
     }
     g_strfreev(file_urls);
 
-    spice_main_file_copy_async(d->main, files, 0, NULL, NULL,
-                               NULL, NULL, NULL);
+    if (n_files == 1) {
+        file_transfer_info = g_malloc0(sizeof(FileTransferInfo));
+        file_transfer_info->basename = g_file_get_basename(files[0]);
+        file_transfer_info->start_time = g_date_time_new_now_local();
+        file_transfer_info->last_update = g_date_time_ref(file_transfer_info->start_time);
+        g_log(G_LOG_DOMAIN, G_LOG_LEVEL_INFO, "transfer of file %s has started",
+              file_transfer_info->basename);
+    }
+
+    spice_main_file_copy_async(d->main, files, 0, NULL,
+                               file_progress_callback, file_transfer_info,
+                               NULL, NULL);
     for (i = 0; i < n_files; i++) {
         g_object_unref(files[i]);
     }
-- 
1.9.3

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