AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity

filethumbnail: Set filechooser::queried after querying

Browse Source 
Setting this attribute after querying, but before receiving the
results, can lead to inappropriate behaviour. This can be reproduced
by dragging the scrollbar very quickly in a large directory; after
going up and down a few times, some thumbnails will be wrong.

Without this branch, "wrong" means they'll show the completely wrong
icon or thumbnail, e.g. a folder icon in a video file. With previous
commit, "wrong" means they'll be empty even when there is a thumbnail
available.

The sequence of events that triggers this is as follows:

 1. GtkListItem receives a GFileInfo object and passes it to
    GtkFileThumbnail via expressions

 2. `get_thumbnail()` is called, doesn't find a thumbnail

 3. `filechooser::queried` is not set yet, so it is set to TRUE
      and we call `g_file_query_info_async()`

 4. **Before `thumbnail_queried_cb` is called**, a new GFileInfo
    is set, and we cancel the query initiated in the previous
    step

 5. We now have a GFileInfo with `filechooser::queried` set to
    TRUE, and no thumbnail!

This commit fixes that by only setting the `filechooser::queried`
attribute after the icon is queried. We need to set it in two
situations: when the query is successful, or when the error is
not G_IO_ERROR_CANCELLED. That's because the query was cancelled,
we didn't really perform it!
This commit is contained in:
Georges Basile Stavracas Neto 2023-02-28 13:54:11 -03:00
parent 158165f769
commit d8b7c909ea
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
gtk/gtkfilethumbnail.c
View File

@ -104,10 +104,19 @@ thumbnail_queried_cb (GObject *object,
GtkFileThumbnail *self = user_data; /* might be unreffed if operation was cancelled */
GFile *file = G_FILE (object);
GFileInfo *queried;
GError *error = NULL;
queried = g_file_query_info_finish (file, result, NULL);
if (queried == NULL)
return;
queried = g_file_query_info_finish (file, result, &error);
if (error)
{
if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_file_info_set_attribute_boolean (self->info, "filechooser::queried", TRUE);
g_clear_error (&error);
return;
}
g_file_info_set_attribute_boolean (self->info, "filechooser::queried", TRUE);
copy_attribute (self->info, queried, G_FILE_ATTRIBUTE_THUMBNAIL_PATH);
copy_attribute (self->info, queried, G_FILE_ATTRIBUTE_THUMBNAILING_FAILED);
@ -147,7 +156,6 @@ get_thumbnail (GtkFileThumbnail *self)
self->cancellable = g_cancellable_new ();
file = _gtk_file_info_get_file (self->info);
g_file_info_set_attribute_boolean (self->info, "filechooser::queried", TRUE);
g_file_query_info_async (file,
G_FILE_ATTRIBUTE_THUMBNAIL_PATH ","
G_FILE_ATTRIBUTE_THUMBNAILING_FAILED ","