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Better caching for document textures and information

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Move thumbnail creation into ShellTextureCache.  It's now asynchronous,
and we cache the result.

Create a DocManager class which keeps around the DocInfo objects between
invocations.  This is also where we ensure we remove thumbnails for
recent items not known anymore.
This commit is contained in:
Colin Walters
2009-07-08 21:06:06 -04:00
parent 1cb6fc004b
commit 5d067ec718
6 changed files with 300 additions and 115 deletions
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68
src/shell-global.c
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@ -14,7 +14,6 @@
#include <string.h>
#include <unistd.h>
#include <dbus/dbus-glib.h>
#include <libgnomeui/gnome-thumbnail.h>
#include <gio/gio.h>
#include <math.h>
#include <X11/extensions/Xfixes.h>
@ -339,73 +338,6 @@ shell_clutter_texture_set_from_pixbuf (ClutterTexture *texture,
0, NULL);
}
static GnomeThumbnailFactory *thumbnail_factory;
/**
* shell_get_thumbnail:
*
* @uri: URI of the file to thumbnail
*
* @mime_type: Mime-Type of the file to thumbnail
*
* Return value: #GdkPixbuf containing a thumbnail for file @uri
* if the thumbnail exists or can be generated, %NULL otherwise
*/
GdkPixbuf *
shell_get_thumbnail(const gchar *uri,
const gchar *mime_type)
{
char *existing_thumbnail;
GdkPixbuf *pixbuf = NULL;
GError *error = NULL;
GFile *file = NULL;
GFileInfo *file_info = NULL;
GTimeVal mtime_g;
time_t mtime = 0;
file = g_file_new_for_uri (uri);
file_info = g_file_query_info (file, G_FILE_ATTRIBUTE_TIME_MODIFIED, G_FILE_QUERY_INFO_NONE, NULL, NULL);
g_object_unref (file);
if (file_info) {
g_file_info_get_modification_time (file_info, &mtime_g);
g_object_unref (file_info);
mtime = (time_t) mtime_g.tv_sec;
}
if (thumbnail_factory == NULL)
thumbnail_factory = gnome_thumbnail_factory_new (GNOME_THUMBNAIL_SIZE_NORMAL);
existing_thumbnail = gnome_thumbnail_factory_lookup (thumbnail_factory, uri, mtime);
if (existing_thumbnail != NULL)
{
pixbuf = gdk_pixbuf_new_from_file(existing_thumbnail, &error);
if (error != NULL)
{
g_warning("Could not generate a pixbuf from file %s: %s", existing_thumbnail, error->message);
g_clear_error (&error);
}
}
else if (gnome_thumbnail_factory_has_valid_failed_thumbnail (thumbnail_factory, uri, mtime))
return NULL;
else if (gnome_thumbnail_factory_can_thumbnail (thumbnail_factory, uri, mime_type, mtime))
{
pixbuf = gnome_thumbnail_factory_generate_thumbnail (thumbnail_factory, uri, mime_type);
if (pixbuf)
{
// we need to save the thumbnail so that we don't need to generate it again in the future
gnome_thumbnail_factory_save_thumbnail (thumbnail_factory, pixbuf, uri, mtime);
}
else
{
g_warning ("Could not generate thumbnail for %s", uri);
gnome_thumbnail_factory_create_failed_thumbnail (thumbnail_factory, uri, mtime);
}
}
return pixbuf;
}
/**
* shell_get_event_key_symbol:
*