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This indicates whether the thumbnail (given by G_FILE_ATTRIBUTE_THUMBNAIL_PATH) is valid — i.e. to represent the file in its current state. If G_FILE_ATTRIBUTE_THUMBNAIL_IS_VALID is FALSE (for a normal _or_ failed thumbnail) it means the file has changed since the thumbnail was generated, and the thumbnail is out of date. Part of checking thumbnail validity (by the spec) involves parsing headers out of the thumbnail .png so we include some (small) code to do that in a separate file. We will likely want to copy this code to gvfs to do the same for GVfsFile. Heavily based on a patch from Philip Withnall <philip.withnall@collabora.co.uk> who suggested the feature and designed the API. https://bugzilla.gnome.org/show_bug.cgi?id=709898
32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/* Copyright © 2013 Canonical Limited
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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#ifndef _thumbnail_verify_h_
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#define _thumbnail_verify_h_
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#include <glib.h>
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#include <gstdio.h>
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gboolean thumbnail_verify (const gchar *thumbnail_path,
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const gchar *file_uri,
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const GStatBuf *file_stat_buf);
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#endif /* _thumbnail_verify_h_ */
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