Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 759 insertions, 0 deletions

diff --git a/app/widgets/gimpthumbbox.c b/app/widgets/gimpthumbbox.c
new file mode 100644
index 0000000..8b0ee44
--- /dev/null
+++ b/app/widgets/gimpthumbbox.c
@@ -0,0 +1,759 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpthumb/gimpthumb.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "widgets-types.h"
+
+#include "config/gimpcoreconfig.h"
+
+#include "core/gimp.h"
+#include "core/gimpcontext.h"
+#include "core/gimpimagefile.h"
+#include "core/gimpprogress.h"
+#include "core/gimpsubprogress.h"
+
+#include "plug-in/gimppluginmanager-file.h"
+
+#include "gimpfiledialog.h" /* eek */
+#include "gimpthumbbox.h"
+#include "gimpview.h"
+#include "gimpviewrenderer-frame.h"
+#include "gimpwidgets-utils.h"
+
+#include "gimp-intl.h"
+
+
+/*  local function prototypes  */
+
+static void     gimp_thumb_box_progress_iface_init (GimpProgressInterface *iface);
+
+static void     gimp_thumb_box_dispose            (GObject           *object);
+static void     gimp_thumb_box_finalize           (GObject           *object);
+
+static void     gimp_thumb_box_style_set          (GtkWidget         *widget,
+                                                   GtkStyle          *prev_style);
+
+static GimpProgress *
+                gimp_thumb_box_progress_start     (GimpProgress      *progress,
+                                                   gboolean           cancellable,
+                                                   const gchar       *message);
+static void     gimp_thumb_box_progress_end       (GimpProgress      *progress);
+static gboolean gimp_thumb_box_progress_is_active (GimpProgress      *progress);
+static void     gimp_thumb_box_progress_set_value (GimpProgress      *progress,
+                                                   gdouble            percentage);
+static gdouble  gimp_thumb_box_progress_get_value (GimpProgress      *progress);
+static void     gimp_thumb_box_progress_pulse     (GimpProgress      *progress);
+
+static gboolean gimp_thumb_box_progress_message   (GimpProgress      *progress,
+                                                   Gimp              *gimp,
+                                                   GimpMessageSeverity  severity,
+                                                   const gchar       *domain,
+                                                   const gchar       *message);
+
+static gboolean gimp_thumb_box_ebox_button_press  (GtkWidget         *widget,
+                                                   GdkEventButton    *bevent,
+                                                   GimpThumbBox      *box);
+static void gimp_thumb_box_thumbnail_clicked      (GtkWidget         *widget,
+                                                   GdkModifierType    state,
+                                                   GimpThumbBox      *box);
+static void gimp_thumb_box_imagefile_info_changed (GimpImagefile     *imagefile,
+                                                   GimpThumbBox      *box);
+static void gimp_thumb_box_thumb_state_notify     (GimpThumbnail     *thumb,
+                                                   GParamSpec        *pspec,
+                                                   GimpThumbBox      *box);
+static void gimp_thumb_box_create_thumbnails      (GimpThumbBox      *box,
+                                                   gboolean           force);
+static void gimp_thumb_box_create_thumbnail       (GimpThumbBox      *box,
+                                                   GFile             *file,
+                                                   GimpThumbnailSize  size,
+                                                   gboolean           force,
+                                                   GimpProgress      *progress);
+static gboolean gimp_thumb_box_auto_thumbnail     (GimpThumbBox      *box);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpThumbBox, gimp_thumb_box, GTK_TYPE_FRAME,
+                         G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
+                                                gimp_thumb_box_progress_iface_init))
+
+#define parent_class gimp_thumb_box_parent_class
+
+
+static void
+gimp_thumb_box_class_init (GimpThumbBoxClass *klass)
+{
+  GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose     = gimp_thumb_box_dispose;
+  object_class->finalize    = gimp_thumb_box_finalize;
+
+  widget_class->style_set   = gimp_thumb_box_style_set;
+}
+
+static void
+gimp_thumb_box_init (GimpThumbBox *box)
+{
+  gtk_frame_set_shadow_type (GTK_FRAME (box), GTK_SHADOW_IN);
+
+  box->idle_id = 0;
+}
+
+static void
+gimp_thumb_box_progress_iface_init (GimpProgressInterface *iface)
+{
+  iface->start     = gimp_thumb_box_progress_start;
+  iface->end       = gimp_thumb_box_progress_end;
+  iface->is_active = gimp_thumb_box_progress_is_active;
+  iface->set_value = gimp_thumb_box_progress_set_value;
+  iface->get_value = gimp_thumb_box_progress_get_value;
+  iface->pulse     = gimp_thumb_box_progress_pulse;
+  iface->message   = gimp_thumb_box_progress_message;
+}
+
+static void
+gimp_thumb_box_dispose (GObject *object)
+{
+  GimpThumbBox *box = GIMP_THUMB_BOX (object);
+
+  if (box->idle_id)
+    {
+      g_source_remove (box->idle_id);
+      box->idle_id = 0;
+    }
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+
+  box->progress = NULL;
+}
+
+static void
+gimp_thumb_box_finalize (GObject *object)
+{
+  GimpThumbBox *box = GIMP_THUMB_BOX (object);
+
+  gimp_thumb_box_take_files (box, NULL);
+
+  g_clear_object (&box->imagefile);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_thumb_box_style_set (GtkWidget *widget,
+                          GtkStyle  *prev_style)
+{
+  GimpThumbBox *box   = GIMP_THUMB_BOX (widget);
+  GtkStyle     *style = gtk_widget_get_style (widget);
+  GtkWidget    *ebox;
+
+  GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
+
+  gtk_widget_modify_bg (box->preview, GTK_STATE_NORMAL,
+                        &style->base[GTK_STATE_NORMAL]);
+  gtk_widget_modify_bg (box->preview, GTK_STATE_INSENSITIVE,
+                        &style->base[GTK_STATE_NORMAL]);
+
+  ebox = gtk_bin_get_child (GTK_BIN (widget));
+
+  gtk_widget_modify_bg (ebox, GTK_STATE_NORMAL,
+                        &style->base[GTK_STATE_NORMAL]);
+  gtk_widget_modify_bg (ebox, GTK_STATE_INSENSITIVE,
+                        &style->base[GTK_STATE_NORMAL]);
+}
+
+static GimpProgress *
+gimp_thumb_box_progress_start (GimpProgress *progress,
+                               gboolean      cancellable,
+                               const gchar  *message)
+{
+  GimpThumbBox *box = GIMP_THUMB_BOX (progress);
+
+  if (! box->progress)
+    return NULL;
+
+  if (! box->progress_active)
+    {
+      GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
+      GtkWidget      *toplevel;
+
+      gtk_progress_bar_set_fraction (bar, 0.0);
+
+      box->progress_active = TRUE;
+
+      toplevel = gtk_widget_get_toplevel (GTK_WIDGET (box));
+
+      if (GIMP_IS_FILE_DIALOG (toplevel))
+        gtk_dialog_set_response_sensitive (GTK_DIALOG (toplevel),
+                                           GTK_RESPONSE_CANCEL, cancellable);
+
+      return progress;
+    }
+
+  return NULL;
+}
+
+static void
+gimp_thumb_box_progress_end (GimpProgress *progress)
+{
+  if (gimp_thumb_box_progress_is_active (progress))
+    {
+      GimpThumbBox   *box = GIMP_THUMB_BOX (progress);
+      GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
+
+      gtk_progress_bar_set_fraction (bar, 0.0);
+
+      box->progress_active = FALSE;
+    }
+}
+
+static gboolean
+gimp_thumb_box_progress_is_active (GimpProgress *progress)
+{
+  GimpThumbBox *box = GIMP_THUMB_BOX (progress);
+
+  return (box->progress && box->progress_active);
+}
+
+static void
+gimp_thumb_box_progress_set_value (GimpProgress *progress,
+                                   gdouble       percentage)
+{
+  if (gimp_thumb_box_progress_is_active (progress))
+    {
+      GimpThumbBox   *box = GIMP_THUMB_BOX (progress);
+      GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
+
+      gtk_progress_bar_set_fraction (bar, percentage);
+    }
+}
+
+static gdouble
+gimp_thumb_box_progress_get_value (GimpProgress *progress)
+{
+  if (gimp_thumb_box_progress_is_active (progress))
+    {
+      GimpThumbBox   *box = GIMP_THUMB_BOX (progress);
+      GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
+
+      return gtk_progress_bar_get_fraction (bar);
+    }
+
+  return 0.0;
+}
+
+static void
+gimp_thumb_box_progress_pulse (GimpProgress *progress)
+{
+  if (gimp_thumb_box_progress_is_active (progress))
+    {
+      GimpThumbBox   *box = GIMP_THUMB_BOX (progress);
+      GtkProgressBar *bar = GTK_PROGRESS_BAR (box->progress);
+
+      gtk_progress_bar_pulse (bar);
+    }
+}
+
+static gboolean
+gimp_thumb_box_progress_message (GimpProgress        *progress,
+                                 Gimp                *gimp,
+                                 GimpMessageSeverity  severity,
+                                 const gchar         *domain,
+                                 const gchar         *message)
+{
+  /*  GimpThumbBox never shows any messages  */
+
+  return TRUE;
+}
+
+
+/*  public functions  */
+
+GtkWidget *
+gimp_thumb_box_new (GimpContext *context)
+{
+  GimpThumbBox   *box;
+  GtkWidget      *vbox;
+  GtkWidget      *vbox2;
+  GtkWidget      *ebox;
+  GtkWidget      *hbox;
+  GtkWidget      *button;
+  GtkWidget      *label;
+  gchar          *str;
+  gint            h, v;
+  GtkRequisition  info_requisition;
+  GtkRequisition  progress_requisition;
+
+  g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
+
+  box = g_object_new (GIMP_TYPE_THUMB_BOX, NULL);
+
+  box->context = context;
+
+  ebox = gtk_event_box_new ();
+  gtk_container_add (GTK_CONTAINER (box), ebox);
+  gtk_widget_show (ebox);
+
+  g_signal_connect (ebox, "button-press-event",
+                    G_CALLBACK (gimp_thumb_box_ebox_button_press),
+                    box);
+
+  str = g_strdup_printf (_("Click to update preview\n"
+                           "%s-Click to force update even "
+                           "if preview is up-to-date"),
+                         gimp_get_mod_string (gimp_get_toggle_behavior_mask ()));
+
+  gimp_help_set_help_data (ebox, str, NULL);
+
+  g_free (str);
+
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+  gtk_container_add (GTK_CONTAINER (ebox), vbox);
+  gtk_widget_show (vbox);
+
+  button = gtk_button_new ();
+  gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+  gtk_widget_show (button);
+
+  label = gtk_label_new_with_mnemonic (_("Pr_eview"));
+  gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+  gtk_container_add (GTK_CONTAINER (button), label);
+  gtk_widget_show (label);
+
+  g_signal_connect (button, "button-press-event",
+                    G_CALLBACK (gtk_true),
+                    NULL);
+  g_signal_connect (button, "button-release-event",
+                    G_CALLBACK (gtk_true),
+                    NULL);
+  g_signal_connect (button, "enter-notify-event",
+                    G_CALLBACK (gtk_true),
+                    NULL);
+  g_signal_connect (button, "leave-notify-event",
+                    G_CALLBACK (gtk_true),
+                    NULL);
+
+  vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
+  gtk_container_set_border_width (GTK_CONTAINER (vbox2), 2);
+  gtk_box_pack_start (GTK_BOX (vbox), vbox2, TRUE, TRUE, 0);
+  gtk_widget_show (vbox2);
+
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
+  gtk_box_pack_start (GTK_BOX (vbox2), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  box->imagefile = gimp_imagefile_new (context->gimp, NULL);
+
+  g_signal_connect (box->imagefile, "info-changed",
+                    G_CALLBACK (gimp_thumb_box_imagefile_info_changed),
+                    box);
+
+  g_signal_connect (gimp_imagefile_get_thumbnail (box->imagefile),
+                    "notify::thumb-state",
+                    G_CALLBACK (gimp_thumb_box_thumb_state_notify),
+                    box);
+
+  gimp_view_renderer_get_frame_size (&h, &v);
+
+  box->preview = gimp_view_new (context,
+                                GIMP_VIEWABLE (box->imagefile),
+                                /* add padding for the shadow frame */
+                                context->gimp->config->thumbnail_size +
+                                MAX (h, v),
+                                0, FALSE);
+
+  gtk_box_pack_start (GTK_BOX (hbox), box->preview, TRUE, FALSE, 2);
+  gtk_widget_show (box->preview);
+
+  gtk_label_set_mnemonic_widget (GTK_LABEL (label), box->preview);
+
+  g_signal_connect (box->preview, "clicked",
+                    G_CALLBACK (gimp_thumb_box_thumbnail_clicked),
+                    box);
+
+  box->filename = gtk_label_new (_("No selection"));
+  gtk_label_set_ellipsize (GTK_LABEL (box->filename), PANGO_ELLIPSIZE_MIDDLE);
+  gtk_label_set_justify (GTK_LABEL (box->filename), GTK_JUSTIFY_CENTER);
+  gimp_label_set_attributes (GTK_LABEL (box->filename),
+                             PANGO_ATTR_STYLE, PANGO_STYLE_OBLIQUE,
+                             -1);
+  gtk_box_pack_start (GTK_BOX (vbox2), box->filename, FALSE, FALSE, 0);
+  gtk_widget_show (box->filename);
+
+  box->info = gtk_label_new (" \n \n \n ");
+  gtk_label_set_justify (GTK_LABEL (box->info), GTK_JUSTIFY_CENTER);
+  gtk_label_set_line_wrap (GTK_LABEL (box->info), TRUE);
+  gimp_label_set_attributes (GTK_LABEL (box->info),
+                             PANGO_ATTR_SCALE, PANGO_SCALE_SMALL,
+                             -1);
+  gtk_box_pack_start (GTK_BOX (vbox2), box->info, FALSE, FALSE, 0);
+  gtk_widget_show (box->info);
+
+  box->progress = gtk_progress_bar_new ();
+  gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), "Fog");
+  gtk_box_pack_end (GTK_BOX (vbox2), box->progress, FALSE, FALSE, 0);
+  gtk_widget_set_no_show_all (box->progress, TRUE);
+  /* don't gtk_widget_show (box->progress); */
+
+  /* eek */
+  gtk_widget_size_request (box->info,     &info_requisition);
+  gtk_widget_size_request (box->progress, &progress_requisition);
+
+  gtk_widget_set_size_request (box->info,
+                               -1, info_requisition.height);
+  gtk_widget_set_size_request (box->filename,
+                               progress_requisition.width, -1);
+
+  gtk_widget_set_size_request (box->progress,
+                               -1, progress_requisition.height);
+  gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), "");
+
+  return GTK_WIDGET (box);
+}
+
+void
+gimp_thumb_box_take_file (GimpThumbBox *box,
+                          GFile        *file)
+{
+  g_return_if_fail (GIMP_IS_THUMB_BOX (box));
+  g_return_if_fail (file == NULL || G_IS_FILE (file));
+
+  if (box->idle_id)
+    {
+      g_source_remove (box->idle_id);
+      box->idle_id = 0;
+    }
+
+  gimp_imagefile_set_file (box->imagefile, file);
+
+  if (file)
+    {
+      gchar *basename = g_path_get_basename (gimp_file_get_utf8_name (file));
+      gtk_label_set_text (GTK_LABEL (box->filename), basename);
+      g_free (basename);
+    }
+  else
+    {
+      gtk_label_set_text (GTK_LABEL (box->filename), _("No selection"));
+    }
+
+  gtk_widget_set_sensitive (GTK_WIDGET (box), file != NULL);
+  gimp_imagefile_update (box->imagefile);
+}
+
+void
+gimp_thumb_box_take_files (GimpThumbBox *box,
+                           GSList       *files)
+{
+  g_return_if_fail (GIMP_IS_THUMB_BOX (box));
+
+  if (box->files)
+    {
+      g_slist_free_full (box->files, (GDestroyNotify) g_object_unref);
+      box->files = NULL;
+    }
+
+  box->files = files;
+}
+
+
+/*  private functions  */
+
+static gboolean
+gimp_thumb_box_ebox_button_press (GtkWidget      *widget,
+                                  GdkEventButton *bevent,
+                                  GimpThumbBox   *box)
+{
+  gimp_thumb_box_thumbnail_clicked (widget, bevent->state, box);
+
+  return TRUE;
+}
+
+static void
+gimp_thumb_box_thumbnail_clicked (GtkWidget       *widget,
+                                  GdkModifierType  state,
+                                  GimpThumbBox    *box)
+{
+  gimp_thumb_box_create_thumbnails (box,
+                                    (state & gimp_get_toggle_behavior_mask ()) ?
+                                    TRUE : FALSE);
+}
+
+static void
+this_is_ugly (GtkWidget     *widget,
+              GtkAllocation *allocation,
+              gpointer       data)
+{
+  gtk_widget_queue_resize (widget);
+
+  g_signal_handlers_disconnect_by_func (widget,
+                                        this_is_ugly,
+                                        data);
+}
+
+static void
+gimp_thumb_box_imagefile_info_changed (GimpImagefile *imagefile,
+                                       GimpThumbBox  *box)
+{
+  gtk_label_set_text (GTK_LABEL (box->info),
+                      gimp_imagefile_get_desc_string (imagefile));
+
+  g_signal_connect_after (box->info, "size-allocate",
+                          G_CALLBACK (this_is_ugly),
+                          "this too");
+}
+
+static void
+gimp_thumb_box_thumb_state_notify (GimpThumbnail *thumb,
+                                   GParamSpec    *pspec,
+                                   GimpThumbBox  *box)
+{
+  if (box->idle_id)
+    return;
+
+  if (thumb->image_state == GIMP_THUMB_STATE_REMOTE)
+    return;
+
+  switch (thumb->thumb_state)
+    {
+    case GIMP_THUMB_STATE_NOT_FOUND:
+    case GIMP_THUMB_STATE_OLD:
+      box->idle_id =
+        g_idle_add_full (G_PRIORITY_LOW,
+                         (GSourceFunc) gimp_thumb_box_auto_thumbnail,
+                         box, NULL);
+      break;
+
+    default:
+      break;
+    }
+}
+
+static void
+gimp_thumb_box_create_thumbnails (GimpThumbBox *box,
+                                  gboolean      force)
+{
+  Gimp           *gimp     = box->context->gimp;
+  GimpProgress   *progress = GIMP_PROGRESS (box);
+  GimpFileDialog *dialog   = NULL;
+  GtkWidget      *toplevel;
+  GSList         *list;
+  gint            n_files;
+  gint            i;
+
+  if (gimp->config->thumbnail_size == GIMP_THUMBNAIL_SIZE_NONE)
+    return;
+
+  toplevel = gtk_widget_get_toplevel (GTK_WIDGET (box));
+
+  if (GIMP_IS_FILE_DIALOG (toplevel))
+    dialog = GIMP_FILE_DIALOG (toplevel);
+
+  gimp_set_busy (gimp);
+
+  if (dialog)
+    gimp_file_dialog_set_sensitive (dialog, FALSE);
+  else
+    gtk_widget_set_sensitive (toplevel, FALSE);
+
+  if (box->files)
+    {
+      gtk_widget_hide (box->info);
+      gtk_widget_show (box->progress);
+    }
+
+  n_files = g_slist_length (box->files);
+
+  if (n_files > 1)
+    {
+      gchar *str;
+
+      gimp_progress_start (GIMP_PROGRESS (box), TRUE, "%s", "");
+
+      progress = gimp_sub_progress_new (GIMP_PROGRESS (box));
+
+      gimp_sub_progress_set_step (GIMP_SUB_PROGRESS (progress), 0, n_files);
+
+      for (list = box->files->next, i = 1;
+           list;
+           list = g_slist_next (list), i++)
+        {
+          str = g_strdup_printf (_("Thumbnail %d of %d"), i, n_files);
+          gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), str);
+          g_free (str);
+
+          gimp_progress_set_value (progress, 0.0);
+
+          while (gtk_events_pending ())
+            gtk_main_iteration ();
+
+          gimp_thumb_box_create_thumbnail (box,
+                                           list->data,
+                                           gimp->config->thumbnail_size,
+                                           force,
+                                           progress);
+
+          if (dialog && dialog->canceled)
+            goto canceled;
+
+          gimp_sub_progress_set_step (GIMP_SUB_PROGRESS (progress), i, n_files);
+        }
+
+      str = g_strdup_printf (_("Thumbnail %d of %d"), n_files, n_files);
+      gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), str);
+      g_free (str);
+
+      gimp_progress_set_value (progress, 0.0);
+
+      while (gtk_events_pending ())
+        gtk_main_iteration ();
+    }
+
+  if (box->files)
+    {
+      gimp_thumb_box_create_thumbnail (box,
+                                       box->files->data,
+                                       gimp->config->thumbnail_size,
+                                       force,
+                                       progress);
+
+      gimp_progress_set_value (progress, 1.0);
+    }
+
+ canceled:
+
+  if (n_files > 1)
+    {
+      g_object_unref (progress);
+
+      gimp_progress_end (GIMP_PROGRESS (box));
+      gtk_progress_bar_set_text (GTK_PROGRESS_BAR (box->progress), "");
+    }
+
+  if (box->files)
+    {
+      gtk_widget_hide (box->progress);
+      gtk_widget_show (box->info);
+    }
+
+  if (dialog)
+    gimp_file_dialog_set_sensitive (dialog, TRUE);
+  else
+    gtk_widget_set_sensitive (toplevel, TRUE);
+
+  gimp_unset_busy (gimp);
+}
+
+static void
+gimp_thumb_box_create_thumbnail (GimpThumbBox      *box,
+                                 GFile             *file,
+                                 GimpThumbnailSize  size,
+                                 gboolean           force,
+                                 GimpProgress      *progress)
+{
+  GimpThumbnail *thumb = gimp_imagefile_get_thumbnail (box->imagefile);
+  gchar         *basename;
+
+  basename = g_path_get_basename (gimp_file_get_utf8_name (file));
+  gtk_label_set_text (GTK_LABEL (box->filename), basename);
+  g_free (basename);
+
+  gimp_imagefile_set_file (box->imagefile, file);
+
+  if (force ||
+      (gimp_thumbnail_peek_thumb (thumb, (GimpThumbSize) size) < GIMP_THUMB_STATE_FAILED &&
+       ! gimp_thumbnail_has_failed (thumb)))
+    {
+      GError *error = NULL;
+
+      if (! gimp_imagefile_create_thumbnail (box->imagefile, box->context,
+                                             progress,
+                                             size, ! force, &error))
+        {
+          gimp_message_literal (box->context->gimp,
+                                G_OBJECT (progress), GIMP_MESSAGE_ERROR,
+                                error->message);
+          g_clear_error (&error);
+        }
+    }
+}
+
+static gboolean
+gimp_thumb_box_auto_thumbnail (GimpThumbBox *box)
+{
+  Gimp          *gimp  = box->context->gimp;
+  GimpThumbnail *thumb = gimp_imagefile_get_thumbnail (box->imagefile);
+  GFile         *file  = gimp_imagefile_get_file (box->imagefile);
+
+  box->idle_id = 0;
+
+  if (thumb->image_state == GIMP_THUMB_STATE_NOT_FOUND)
+    return FALSE;
+
+  switch (thumb->thumb_state)
+    {
+    case GIMP_THUMB_STATE_NOT_FOUND:
+    case GIMP_THUMB_STATE_OLD:
+      if (thumb->image_filesize < gimp->config->thumbnail_filesize_limit &&
+          ! gimp_thumbnail_has_failed (thumb)                            &&
+          gimp_plug_in_manager_file_procedure_find_by_extension (gimp->plug_in_manager,
+                                                                 GIMP_FILE_PROCEDURE_GROUP_OPEN,
+                                                                 file))
+        {
+          if (thumb->image_filesize > 0)
+            {
+              gchar *size;
+              gchar *text;
+
+              size = g_format_size (thumb->image_filesize);
+              text = g_strdup_printf ("%s\n%s",
+                                      size, _("Creating preview..."));
+
+              gtk_label_set_text (GTK_LABEL (box->info), text);
+
+              g_free (text);
+              g_free (size);
+            }
+          else
+            {
+              gtk_label_set_text (GTK_LABEL (box->info),
+                                  _("Creating preview..."));
+            }
+
+          gimp_imagefile_create_thumbnail_weak (box->imagefile, box->context,
+                                                GIMP_PROGRESS (box),
+                                                gimp->config->thumbnail_size,
+                                                TRUE);
+        }
+      break;
+
+    default:
+      break;
+    }
+
+  return FALSE;
+}