Adding upstream version 2.10.36.upstream/2.10.36

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

1 files changed, 1750 insertions, 0 deletions

diff --git a/app/display/gimpstatusbar.c b/app/display/gimpstatusbar.c
new file mode 100644
index 0000000..2a2648f
--- /dev/null
+++ b/app/display/gimpstatusbar.c
@@ -0,0 +1,1750 @@
+/* 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 "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "display-types.h"
+
+#include "config/gimpdisplayconfig.h"
+
+#include "core/gimpimage.h"
+#include "core/gimpprogress.h"
+
+#include "widgets/gimpuimanager.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "gimpdisplay.h"
+#include "gimpdisplayshell.h"
+#include "gimpdisplayshell-scale.h"
+#include "gimpimagewindow.h"
+#include "gimpscalecombobox.h"
+#include "gimpstatusbar.h"
+
+#include "gimp-intl.h"
+
+
+/*  maximal width of the string holding the cursor-coordinates   */
+#define CURSOR_LEN                      256
+
+/*  the spacing of the hbox                                      */
+#define HBOX_SPACING                      1
+
+/*  spacing between the icon and the statusbar label             */
+#define ICON_SPACING                      2
+
+/*  width/height of the statusbar icon rect                      */
+#define ICON_SIZE                        16
+
+/*  timeout (in milliseconds) for temporary statusbar messages   */
+#define MESSAGE_TIMEOUT                8000
+
+/*  minimal interval (in microseconds) between progress updates  */
+#define MIN_PROGRESS_UPDATE_INTERVAL  50000
+
+
+typedef struct _GimpStatusbarMsg GimpStatusbarMsg;
+
+struct _GimpStatusbarMsg
+{
+  guint  context_id;
+  gchar *icon_name;
+  gchar *text;
+};
+
+
+static void     gimp_statusbar_progress_iface_init (GimpProgressInterface *iface);
+
+static void     gimp_statusbar_dispose            (GObject           *object);
+static void     gimp_statusbar_finalize           (GObject           *object);
+
+static void     gimp_statusbar_screen_changed     (GtkWidget         *widget,
+                                                   GdkScreen         *previous);
+static void     gimp_statusbar_style_set          (GtkWidget         *widget,
+                                                   GtkStyle          *prev_style);
+
+static void     gimp_statusbar_hbox_size_request  (GtkWidget         *widget,
+                                                   GtkRequisition    *requisition,
+                                                   GimpStatusbar     *statusbar);
+
+static GimpProgress *
+                gimp_statusbar_progress_start     (GimpProgress      *progress,
+                                                   gboolean           cancellable,
+                                                   const gchar       *message);
+static void     gimp_statusbar_progress_end       (GimpProgress      *progress);
+static gboolean gimp_statusbar_progress_is_active (GimpProgress      *progress);
+static void     gimp_statusbar_progress_set_text  (GimpProgress      *progress,
+                                                   const gchar       *message);
+static void     gimp_statusbar_progress_set_value (GimpProgress      *progress,
+                                                   gdouble            percentage);
+static gdouble  gimp_statusbar_progress_get_value (GimpProgress      *progress);
+static void     gimp_statusbar_progress_pulse     (GimpProgress      *progress);
+static gboolean gimp_statusbar_progress_message   (GimpProgress      *progress,
+                                                   Gimp              *gimp,
+                                                   GimpMessageSeverity severity,
+                                                   const gchar       *domain,
+                                                   const gchar       *message);
+static void     gimp_statusbar_progress_canceled  (GtkWidget         *button,
+                                                   GimpStatusbar     *statusbar);
+
+static gboolean gimp_statusbar_label_expose       (GtkWidget         *widget,
+                                                   GdkEventExpose    *event,
+                                                   GimpStatusbar     *statusbar);
+
+static void     gimp_statusbar_update             (GimpStatusbar     *statusbar);
+static void     gimp_statusbar_unit_changed       (GimpUnitComboBox  *combo,
+                                                   GimpStatusbar     *statusbar);
+static void     gimp_statusbar_scale_changed      (GimpScaleComboBox *combo,
+                                                   GimpStatusbar     *statusbar);
+static void     gimp_statusbar_scale_activated    (GimpScaleComboBox *combo,
+                                                   GimpStatusbar     *statusbar);
+static gboolean gimp_statusbar_rotate_pressed     (GtkWidget         *event_box,
+                                                   GdkEvent          *event,
+                                                   GimpStatusbar     *statusbar);
+static gboolean gimp_statusbar_horiz_flip_pressed (GtkWidget         *event_box,
+                                                   GdkEvent          *event,
+                                                   GimpStatusbar     *statusbar);
+static gboolean gimp_statusbar_vert_flip_pressed  (GtkWidget         *event_box,
+                                                   GdkEvent          *event,
+                                                   GimpStatusbar     *statusbar);
+static void     gimp_statusbar_shell_scaled       (GimpDisplayShell  *shell,
+                                                   GimpStatusbar     *statusbar);
+static void     gimp_statusbar_shell_rotated      (GimpDisplayShell  *shell,
+                                                   GimpStatusbar     *statusbar);
+static void     gimp_statusbar_shell_status_notify(GimpDisplayShell  *shell,
+                                                   const GParamSpec  *pspec,
+                                                   GimpStatusbar     *statusbar);
+static guint    gimp_statusbar_get_context_id     (GimpStatusbar     *statusbar,
+                                                   const gchar       *context);
+static gboolean gimp_statusbar_temp_timeout       (GimpStatusbar     *statusbar);
+
+static void     gimp_statusbar_add_message        (GimpStatusbar     *statusbar,
+                                                   guint              context_id,
+                                                   const gchar       *icon_name,
+                                                   const gchar       *format,
+                                                   va_list            args,
+                                                   gboolean           move_to_front) G_GNUC_PRINTF (4, 0);
+static void     gimp_statusbar_remove_message     (GimpStatusbar     *statusbar,
+                                                   guint              context_id);
+static void     gimp_statusbar_msg_free           (GimpStatusbarMsg  *msg);
+
+static gchar *  gimp_statusbar_vprintf            (const gchar       *format,
+                                                   va_list            args) G_GNUC_PRINTF (1, 0);
+
+static GdkPixbuf * gimp_statusbar_load_icon       (GimpStatusbar     *statusbar,
+                                                   const gchar       *icon_name);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpStatusbar, gimp_statusbar, GTK_TYPE_STATUSBAR,
+                         G_IMPLEMENT_INTERFACE (GIMP_TYPE_PROGRESS,
+                                                gimp_statusbar_progress_iface_init))
+
+#define parent_class gimp_statusbar_parent_class
+
+
+static void
+gimp_statusbar_class_init (GimpStatusbarClass *klass)
+{
+  GObjectClass   *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose        = gimp_statusbar_dispose;
+  object_class->finalize       = gimp_statusbar_finalize;
+
+  widget_class->screen_changed = gimp_statusbar_screen_changed;
+  widget_class->style_set      = gimp_statusbar_style_set;
+}
+
+static void
+gimp_statusbar_progress_iface_init (GimpProgressInterface *iface)
+{
+  iface->start     = gimp_statusbar_progress_start;
+  iface->end       = gimp_statusbar_progress_end;
+  iface->is_active = gimp_statusbar_progress_is_active;
+  iface->set_text  = gimp_statusbar_progress_set_text;
+  iface->set_value = gimp_statusbar_progress_set_value;
+  iface->get_value = gimp_statusbar_progress_get_value;
+  iface->pulse     = gimp_statusbar_progress_pulse;
+  iface->message   = gimp_statusbar_progress_message;
+}
+
+static void
+gimp_statusbar_init (GimpStatusbar *statusbar)
+{
+  GtkWidget     *hbox;
+  GtkWidget     *hbox2;
+  GtkWidget     *image;
+  GtkWidget     *label;
+  GimpUnitStore *store;
+  GList         *children;
+
+  statusbar->shell          = NULL;
+  statusbar->messages       = NULL;
+  statusbar->context_ids    = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                                     g_free, NULL);
+  statusbar->seq_context_id = 1;
+
+  statusbar->temp_context_id =
+    gimp_statusbar_get_context_id (statusbar, "gimp-statusbar-temp");
+
+  statusbar->cursor_format_str[0]   = '\0';
+  statusbar->cursor_format_str_f[0] = '\0';
+  statusbar->length_format_str[0]   = '\0';
+
+  statusbar->progress_active      = FALSE;
+  statusbar->progress_shown       = FALSE;
+
+  /*  remove the message label from the message area  */
+  hbox = gtk_statusbar_get_message_area (GTK_STATUSBAR (statusbar));
+  gtk_box_set_spacing (GTK_BOX (hbox), HBOX_SPACING);
+
+  children = gtk_container_get_children (GTK_CONTAINER (hbox));
+  statusbar->label = g_object_ref (children->data);
+  g_list_free (children);
+
+  gtk_container_remove (GTK_CONTAINER (hbox), statusbar->label);
+
+  g_signal_connect (hbox, "size-request",
+                    G_CALLBACK (gimp_statusbar_hbox_size_request),
+                    statusbar);
+
+  statusbar->cursor_label = gtk_label_new ("8888, 8888");
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->cursor_label, FALSE, FALSE, 0);
+  gtk_widget_show (statusbar->cursor_label);
+
+  store = gimp_unit_store_new (2);
+  statusbar->unit_combo = gimp_unit_combo_box_new_with_model (store);
+  g_object_unref (store);
+
+  /* see issue #2642 */
+  gtk_combo_box_set_wrap_width (GTK_COMBO_BOX (statusbar->unit_combo), 1);
+
+  gtk_widget_set_can_focus (statusbar->unit_combo, FALSE);
+  g_object_set (statusbar->unit_combo, "focus-on-click", FALSE, NULL);
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->unit_combo, FALSE, FALSE, 0);
+  gtk_widget_show (statusbar->unit_combo);
+
+  g_signal_connect (statusbar->unit_combo, "changed",
+                    G_CALLBACK (gimp_statusbar_unit_changed),
+                    statusbar);
+
+  statusbar->scale_combo = gimp_scale_combo_box_new ();
+  gtk_widget_set_can_focus (statusbar->scale_combo, FALSE);
+  g_object_set (statusbar->scale_combo, "focus-on-click", FALSE, NULL);
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->scale_combo, FALSE, FALSE, 0);
+  gtk_widget_show (statusbar->scale_combo);
+
+  g_signal_connect (statusbar->scale_combo, "changed",
+                    G_CALLBACK (gimp_statusbar_scale_changed),
+                    statusbar);
+
+  g_signal_connect (statusbar->scale_combo, "entry-activated",
+                    G_CALLBACK (gimp_statusbar_scale_activated),
+                    statusbar);
+
+  /* Shell transform status */
+  statusbar->rotate_widget = gtk_event_box_new ();
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->rotate_widget,
+                      FALSE, FALSE, 1);
+  gtk_widget_show (statusbar->rotate_widget);
+
+  statusbar->rotate_label = gtk_label_new (NULL);
+  gtk_container_add (GTK_CONTAINER (statusbar->rotate_widget),
+                     statusbar->rotate_label);
+  gtk_widget_show (statusbar->rotate_label);
+
+  g_signal_connect (statusbar->rotate_widget, "button-press-event",
+                    G_CALLBACK (gimp_statusbar_rotate_pressed),
+                    statusbar);
+
+  statusbar->horizontal_flip_icon = gtk_event_box_new ();
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->horizontal_flip_icon,
+                      FALSE, FALSE, 1);
+  gtk_widget_show (statusbar->horizontal_flip_icon);
+
+  image = gtk_image_new_from_icon_name ("gimp-flip-horizontal",
+                                        GTK_ICON_SIZE_MENU);
+  gtk_container_add (GTK_CONTAINER (statusbar->horizontal_flip_icon), image);
+  gtk_widget_show (image);
+
+  g_signal_connect (statusbar->horizontal_flip_icon, "button-press-event",
+                    G_CALLBACK (gimp_statusbar_horiz_flip_pressed),
+                    statusbar);
+
+  statusbar->vertical_flip_icon = gtk_event_box_new ();
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->vertical_flip_icon,
+                      FALSE, FALSE, 1);
+  gtk_widget_show (statusbar->vertical_flip_icon);
+
+  image = gtk_image_new_from_icon_name ("gimp-flip-vertical",
+                                        GTK_ICON_SIZE_MENU);
+  gtk_container_add (GTK_CONTAINER (statusbar->vertical_flip_icon), image);
+  gtk_widget_show (image);
+
+  g_signal_connect (statusbar->vertical_flip_icon, "button-press-event",
+                    G_CALLBACK (gimp_statusbar_vert_flip_pressed),
+                    statusbar);
+
+  /*  put the label back into the message area  */
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->label, TRUE, TRUE, 1);
+
+  g_object_unref (statusbar->label);
+
+  g_signal_connect_after (statusbar->label, "expose-event",
+                          G_CALLBACK (gimp_statusbar_label_expose),
+                          statusbar);
+
+  statusbar->progressbar = g_object_new (GTK_TYPE_PROGRESS_BAR,
+                                         "text-xalign", 0.0,
+                                         "text-yalign", 0.5,
+                                         "ellipsize",   PANGO_ELLIPSIZE_END,
+                                         NULL);
+  gtk_box_pack_start (GTK_BOX (hbox), statusbar->progressbar, TRUE, TRUE, 0);
+  /*  don't show the progress bar  */
+
+  /*  construct the cancel button's contents manually because we
+   *  always want image and label regardless of settings, and we want
+   *  a menu size image.
+   */
+  statusbar->cancel_button = gtk_button_new ();
+  gtk_widget_set_can_focus (statusbar->cancel_button, FALSE);
+  gtk_button_set_relief (GTK_BUTTON (statusbar->cancel_button),
+                         GTK_RELIEF_NONE);
+  gtk_widget_set_sensitive (statusbar->cancel_button, FALSE);
+  gtk_box_pack_end (GTK_BOX (hbox),
+                    statusbar->cancel_button, FALSE, FALSE, 0);
+  /*  don't show the cancel button  */
+
+  hbox2 = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_container_add (GTK_CONTAINER (statusbar->cancel_button), hbox2);
+  gtk_widget_show (hbox2);
+
+  image = gtk_image_new_from_icon_name ("gtk-cancel", GTK_ICON_SIZE_MENU);
+  gtk_box_pack_start (GTK_BOX (hbox2), image, FALSE, FALSE, 2);
+  gtk_widget_show (image);
+
+  label = gtk_label_new ("Cancel");
+  gtk_box_pack_start (GTK_BOX (hbox2), label, FALSE, FALSE, 2);
+  gtk_widget_show (label);
+
+  g_signal_connect (statusbar->cancel_button, "clicked",
+                    G_CALLBACK (gimp_statusbar_progress_canceled),
+                    statusbar);
+}
+
+static void
+gimp_statusbar_dispose (GObject *object)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (object);
+
+  if (statusbar->temp_timeout_id)
+    {
+      g_source_remove (statusbar->temp_timeout_id);
+      statusbar->temp_timeout_id = 0;
+    }
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_statusbar_finalize (GObject *object)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (object);
+
+  g_clear_object (&statusbar->icon);
+  g_clear_pointer (&statusbar->icon_hash, g_hash_table_unref);
+
+  g_slist_free_full (statusbar->messages,
+                     (GDestroyNotify) gimp_statusbar_msg_free);
+  statusbar->messages = NULL;
+
+  g_clear_pointer (&statusbar->context_ids, g_hash_table_destroy);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_statusbar_screen_changed (GtkWidget *widget,
+                               GdkScreen *previous)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (widget);
+
+  if (GTK_WIDGET_CLASS (parent_class)->screen_changed)
+    GTK_WIDGET_CLASS (parent_class)->screen_changed (widget, previous);
+
+  g_clear_pointer (&statusbar->icon_hash, g_hash_table_unref);
+}
+
+static void
+gimp_statusbar_style_set (GtkWidget *widget,
+                          GtkStyle  *prev_style)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (widget);
+
+  GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
+
+  g_clear_pointer (&statusbar->icon_hash, g_hash_table_unref);
+}
+
+static void
+gimp_statusbar_hbox_size_request (GtkWidget      *widget,
+                                  GtkRequisition *requisition,
+                                  GimpStatusbar  *statusbar)
+{
+  GtkRequisition child_requisition;
+  gint           width = 0;
+
+  /*  also consider the children which can be invisible  */
+
+  gtk_widget_size_request (statusbar->cursor_label, &child_requisition);
+  width += child_requisition.width;
+  requisition->height = MAX (requisition->height,
+                             child_requisition.height);
+
+  gtk_widget_size_request (statusbar->unit_combo, &child_requisition);
+  width += child_requisition.width;
+  requisition->height = MAX (requisition->height,
+                             child_requisition.height);
+
+  gtk_widget_size_request (statusbar->scale_combo, &child_requisition);
+  width += child_requisition.width;
+  requisition->height = MAX (requisition->height,
+                             child_requisition.height);
+
+  gtk_widget_size_request (statusbar->progressbar, &child_requisition);
+  requisition->height = MAX (requisition->height,
+                             child_requisition.height);
+
+  gtk_widget_size_request (statusbar->label, &child_requisition);
+  requisition->height = MAX (requisition->height,
+                             child_requisition.height);
+
+  gtk_widget_size_request (statusbar->cancel_button, &child_requisition);
+  requisition->height = MAX (requisition->height,
+                             child_requisition.height);
+
+  requisition->width = MAX (requisition->width, width + 32);
+}
+
+static GimpProgress *
+gimp_statusbar_progress_start (GimpProgress *progress,
+                               gboolean      cancellable,
+                               const gchar  *message)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  if (! statusbar->progress_active)
+    {
+      GtkWidget     *bar = statusbar->progressbar;
+      GtkAllocation  allocation;
+
+      statusbar->progress_active           = TRUE;
+      statusbar->progress_value            = 0.0;
+      statusbar->progress_last_update_time = g_get_monotonic_time ();
+
+      gimp_statusbar_push (statusbar, "progress", NULL, "%s", message);
+      gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (bar), 0.0);
+      gtk_widget_set_sensitive (statusbar->cancel_button, cancellable);
+
+      if (cancellable)
+        {
+          if (message)
+            {
+              gchar *tooltip = g_strdup_printf (_("Cancel <i>%s</i>"), message);
+
+              gimp_help_set_help_data_with_markup (statusbar->cancel_button,
+                                                   tooltip, NULL);
+              g_free (tooltip);
+            }
+
+          gtk_widget_show (statusbar->cancel_button);
+        }
+
+      gtk_widget_get_allocation (statusbar->label, &allocation);
+
+      gtk_widget_show (statusbar->progressbar);
+      gtk_widget_hide (statusbar->label);
+
+      /*  This shit is needed so that the progress bar is drawn in the
+       *  correct place in the cases where we suck completely and run
+       *  an operation that blocks the GUI and doesn't let the main
+       *  loop run.
+       */
+      gtk_container_resize_children (GTK_CONTAINER (statusbar));
+      gtk_widget_size_allocate (statusbar->progressbar, &allocation);
+
+      if (! gtk_widget_get_visible (GTK_WIDGET (statusbar)))
+        {
+          gtk_widget_show (GTK_WIDGET (statusbar));
+          statusbar->progress_shown = TRUE;
+        }
+
+      gimp_widget_flush_expose (bar);
+
+      gimp_statusbar_override_window_title (statusbar);
+
+      return progress;
+    }
+
+  return NULL;
+}
+
+static void
+gimp_statusbar_progress_end (GimpProgress *progress)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  if (statusbar->progress_active)
+    {
+      GtkWidget *bar = statusbar->progressbar;
+
+      if (statusbar->progress_shown)
+        {
+          gtk_widget_hide (GTK_WIDGET (statusbar));
+          statusbar->progress_shown = FALSE;
+        }
+
+      statusbar->progress_active = FALSE;
+      statusbar->progress_value  = 0.0;
+
+      gtk_widget_hide (bar);
+      gtk_widget_show (statusbar->label);
+
+      gimp_statusbar_pop (statusbar, "progress");
+
+      gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (bar), 0.0);
+      gtk_widget_set_sensitive (statusbar->cancel_button, FALSE);
+      gtk_widget_hide (statusbar->cancel_button);
+
+      gimp_statusbar_restore_window_title (statusbar);
+    }
+}
+
+static gboolean
+gimp_statusbar_progress_is_active (GimpProgress *progress)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  return statusbar->progress_active;
+}
+
+static void
+gimp_statusbar_progress_set_text (GimpProgress *progress,
+                                  const gchar  *message)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  if (statusbar->progress_active)
+    {
+      GtkWidget *bar = statusbar->progressbar;
+
+      gimp_statusbar_replace (statusbar, "progress", NULL, "%s", message);
+
+      gimp_widget_flush_expose (bar);
+
+      gimp_statusbar_override_window_title (statusbar);
+    }
+}
+
+static void
+gimp_statusbar_progress_set_value (GimpProgress *progress,
+                                   gdouble       percentage)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  if (statusbar->progress_active)
+    {
+      guint64 time = g_get_monotonic_time ();
+
+      if (time - statusbar->progress_last_update_time >=
+          MIN_PROGRESS_UPDATE_INTERVAL)
+        {
+          GtkWidget     *bar = statusbar->progressbar;
+          GtkAllocation  allocation;
+          gdouble        diff;
+
+          gtk_widget_get_allocation (bar, &allocation);
+
+          statusbar->progress_value = percentage;
+
+          diff = fabs (percentage -
+                       gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR (bar)));
+
+          /* only update the progress bar if this causes a visible change */
+          if (allocation.width * diff >= 1.0)
+            {
+              statusbar->progress_last_update_time = time;
+
+              gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (bar),
+                                             percentage);
+
+              gimp_widget_flush_expose (bar);
+            }
+        }
+    }
+}
+
+static gdouble
+gimp_statusbar_progress_get_value (GimpProgress *progress)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  if (statusbar->progress_active)
+    return statusbar->progress_value;
+
+  return 0.0;
+}
+
+static void
+gimp_statusbar_progress_pulse (GimpProgress *progress)
+{
+  GimpStatusbar *statusbar = GIMP_STATUSBAR (progress);
+
+  if (statusbar->progress_active)
+    {
+      guint64 time = g_get_monotonic_time ();
+
+      if (time - statusbar->progress_last_update_time >=
+          MIN_PROGRESS_UPDATE_INTERVAL)
+        {
+          GtkWidget *bar = statusbar->progressbar;
+
+          statusbar->progress_last_update_time = time;
+
+          gtk_progress_bar_pulse (GTK_PROGRESS_BAR (bar));
+
+          gimp_widget_flush_expose (bar);
+        }
+    }
+}
+
+static gboolean
+gimp_statusbar_progress_message (GimpProgress        *progress,
+                                 Gimp                *gimp,
+                                 GimpMessageSeverity  severity,
+                                 const gchar         *domain,
+                                 const gchar         *message)
+{
+  GimpStatusbar *statusbar  = GIMP_STATUSBAR (progress);
+  PangoLayout   *layout;
+  const gchar   *icon_name;
+  gboolean       handle_msg = FALSE;
+
+  /*  don't accept a message if we are already displaying a more severe one  */
+  if (statusbar->temp_timeout_id && statusbar->temp_severity > severity)
+    return FALSE;
+
+  /*  we can only handle short one-liners  */
+  layout = gtk_widget_create_pango_layout (statusbar->label, message);
+
+  icon_name = gimp_get_message_icon_name (severity);
+
+  if (pango_layout_get_line_count (layout) == 1)
+    {
+      GtkAllocation label_allocation;
+      gint          width;
+
+      gtk_widget_get_allocation (statusbar->label, &label_allocation);
+
+      pango_layout_get_pixel_size (layout, &width, NULL);
+
+      if (width < label_allocation.width)
+        {
+          if (icon_name)
+            {
+              GdkPixbuf *pixbuf;
+
+              pixbuf = gimp_statusbar_load_icon (statusbar, icon_name);
+
+              width += ICON_SPACING + gdk_pixbuf_get_width (pixbuf);
+
+              g_object_unref (pixbuf);
+
+              handle_msg = (width < label_allocation.width);
+            }
+          else
+            {
+              handle_msg = TRUE;
+            }
+        }
+    }
+
+  g_object_unref (layout);
+
+  if (handle_msg)
+    gimp_statusbar_push_temp (statusbar, severity, icon_name, "%s", message);
+
+  return handle_msg;
+}
+
+static void
+gimp_statusbar_progress_canceled (GtkWidget     *button,
+                                  GimpStatusbar *statusbar)
+{
+  if (statusbar->progress_active)
+    gimp_progress_cancel (GIMP_PROGRESS (statusbar));
+}
+
+static void
+gimp_statusbar_set_text (GimpStatusbar *statusbar,
+                         const gchar   *icon_name,
+                         const gchar   *text)
+{
+  if (statusbar->progress_active)
+    {
+      gtk_progress_bar_set_text (GTK_PROGRESS_BAR (statusbar->progressbar),
+                                 text);
+    }
+  else
+    {
+      g_clear_object (&statusbar->icon);
+
+      if (icon_name)
+        statusbar->icon = gimp_statusbar_load_icon (statusbar, icon_name);
+
+      if (statusbar->icon)
+        {
+          PangoAttrList  *attrs;
+          PangoAttribute *attr;
+          PangoRectangle  rect;
+          gchar          *tmp;
+
+          tmp = g_strconcat (" ", text, NULL);
+          gtk_label_set_text (GTK_LABEL (statusbar->label), tmp);
+          g_free (tmp);
+
+          rect.x      = 0;
+          rect.y      = 0;
+          rect.width  = PANGO_SCALE * (gdk_pixbuf_get_width (statusbar->icon) +
+                                       ICON_SPACING);
+          rect.height = 0;
+
+          attrs = pango_attr_list_new ();
+
+          attr = pango_attr_shape_new (&rect, &rect);
+          attr->start_index = 0;
+          attr->end_index   = 1;
+          pango_attr_list_insert (attrs, attr);
+
+          gtk_label_set_attributes (GTK_LABEL (statusbar->label), attrs);
+          pango_attr_list_unref (attrs);
+        }
+      else
+        {
+          gtk_label_set_text (GTK_LABEL (statusbar->label), text);
+          gtk_label_set_attributes (GTK_LABEL (statusbar->label), NULL);
+        }
+    }
+}
+
+static void
+gimp_statusbar_update (GimpStatusbar *statusbar)
+{
+  GimpStatusbarMsg *msg = NULL;
+
+  if (statusbar->messages)
+    msg = statusbar->messages->data;
+
+  if (msg && msg->text)
+    {
+      gimp_statusbar_set_text (statusbar, msg->icon_name, msg->text);
+    }
+  else
+    {
+      gimp_statusbar_set_text (statusbar, NULL, "");
+    }
+}
+
+
+/*  public functions  */
+
+GtkWidget *
+gimp_statusbar_new (void)
+{
+  return g_object_new (GIMP_TYPE_STATUSBAR, NULL);
+}
+
+void
+gimp_statusbar_set_shell (GimpStatusbar    *statusbar,
+                          GimpDisplayShell *shell)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
+
+  if (shell == statusbar->shell)
+    return;
+
+  if (statusbar->shell)
+    {
+      g_signal_handlers_disconnect_by_func (statusbar->shell,
+                                            gimp_statusbar_shell_scaled,
+                                            statusbar);
+      g_signal_handlers_disconnect_by_func (statusbar->shell,
+                                            gimp_statusbar_shell_rotated,
+                                            statusbar);
+      g_signal_handlers_disconnect_by_func (statusbar->shell,
+                                            gimp_statusbar_shell_status_notify,
+                                            statusbar);
+    }
+
+  statusbar->shell = shell;
+
+  g_signal_connect_object (statusbar->shell, "scaled",
+                           G_CALLBACK (gimp_statusbar_shell_scaled),
+                           statusbar, 0);
+  g_signal_connect_object (statusbar->shell, "rotated",
+                           G_CALLBACK (gimp_statusbar_shell_rotated),
+                           statusbar, 0);
+  g_signal_connect_object (statusbar->shell, "notify::status",
+                           G_CALLBACK (gimp_statusbar_shell_status_notify),
+                           statusbar, 0);
+  gimp_statusbar_shell_rotated (shell, statusbar);
+}
+
+gboolean
+gimp_statusbar_get_visible (GimpStatusbar *statusbar)
+{
+  g_return_val_if_fail (GIMP_IS_STATUSBAR (statusbar), FALSE);
+
+  if (statusbar->progress_shown)
+    return FALSE;
+
+  return gtk_widget_get_visible (GTK_WIDGET (statusbar));
+}
+
+void
+gimp_statusbar_set_visible (GimpStatusbar *statusbar,
+                            gboolean       visible)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  if (statusbar->progress_shown)
+    {
+      if (visible)
+        {
+          statusbar->progress_shown = FALSE;
+          return;
+        }
+    }
+
+  gtk_widget_set_visible (GTK_WIDGET (statusbar), visible);
+}
+
+void
+gimp_statusbar_empty (GimpStatusbar *statusbar)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  gtk_widget_hide (statusbar->cursor_label);
+  gtk_widget_hide (statusbar->unit_combo);
+  gtk_widget_hide (statusbar->scale_combo);
+  gtk_widget_hide (statusbar->rotate_widget);
+  gtk_widget_hide (statusbar->horizontal_flip_icon);
+  gtk_widget_hide (statusbar->vertical_flip_icon);
+}
+
+void
+gimp_statusbar_fill (GimpStatusbar *statusbar)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  gtk_widget_show (statusbar->cursor_label);
+  gtk_widget_show (statusbar->unit_combo);
+  gtk_widget_show (statusbar->scale_combo);
+  gtk_widget_show (statusbar->rotate_widget);
+  gimp_statusbar_shell_rotated (statusbar->shell, statusbar);
+}
+
+void
+gimp_statusbar_override_window_title (GimpStatusbar *statusbar)
+{
+  GtkWidget *toplevel;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  toplevel = gtk_widget_get_toplevel (GTK_WIDGET (statusbar));
+
+  if (gimp_image_window_is_iconified (GIMP_IMAGE_WINDOW (toplevel)))
+    {
+      const gchar *message = gimp_statusbar_peek (statusbar, "progress");
+
+      if (message)
+        gtk_window_set_title (GTK_WINDOW (toplevel), message);
+    }
+}
+
+void
+gimp_statusbar_restore_window_title (GimpStatusbar *statusbar)
+{
+  GtkWidget *toplevel;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  toplevel = gtk_widget_get_toplevel (GTK_WIDGET (statusbar));
+
+  if (gimp_image_window_is_iconified (GIMP_IMAGE_WINDOW (toplevel)))
+    {
+      g_object_notify (G_OBJECT (statusbar->shell), "title");
+    }
+}
+
+void
+gimp_statusbar_push (GimpStatusbar *statusbar,
+                     const gchar   *context,
+                     const gchar   *icon_name,
+                     const gchar   *format,
+                     ...)
+{
+  va_list args;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (context != NULL);
+  g_return_if_fail (format != NULL);
+
+  va_start (args, format);
+  gimp_statusbar_push_valist (statusbar, context, icon_name, format, args);
+  va_end (args);
+}
+
+void
+gimp_statusbar_push_valist (GimpStatusbar *statusbar,
+                            const gchar   *context,
+                            const gchar   *icon_name,
+                            const gchar   *format,
+                            va_list        args)
+{
+  guint context_id;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (context != NULL);
+  g_return_if_fail (format != NULL);
+
+  context_id = gimp_statusbar_get_context_id (statusbar, context);
+
+  gimp_statusbar_add_message (statusbar,
+                              context_id,
+                              icon_name, format, args,
+                              /*  move_to_front =  */ TRUE);
+}
+
+void
+gimp_statusbar_push_coords (GimpStatusbar       *statusbar,
+                            const gchar         *context,
+                            const gchar         *icon_name,
+                            GimpCursorPrecision  precision,
+                            const gchar         *title,
+                            gdouble              x,
+                            const gchar         *separator,
+                            gdouble              y,
+                            const gchar         *help)
+{
+  GimpDisplayShell *shell;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (title != NULL);
+  g_return_if_fail (separator != NULL);
+
+  if (help == NULL)
+    help = "";
+
+  shell = statusbar->shell;
+
+  switch (precision)
+    {
+    case GIMP_CURSOR_PRECISION_PIXEL_CENTER:
+      x = (gint) x;
+      y = (gint) y;
+      break;
+
+    case GIMP_CURSOR_PRECISION_PIXEL_BORDER:
+      x = RINT (x);
+      y = RINT (y);
+      break;
+
+    case GIMP_CURSOR_PRECISION_SUBPIXEL:
+      break;
+    }
+
+  if (shell->unit == GIMP_UNIT_PIXEL)
+    {
+      if (precision == GIMP_CURSOR_PRECISION_SUBPIXEL)
+        {
+          gimp_statusbar_push (statusbar, context,
+                               icon_name,
+                               statusbar->cursor_format_str_f,
+                               title,
+                               x,
+                               separator,
+                               y,
+                               help);
+        }
+      else
+        {
+          gimp_statusbar_push (statusbar, context,
+                               icon_name,
+                               statusbar->cursor_format_str,
+                               title,
+                               (gint) RINT (x),
+                               separator,
+                               (gint) RINT (y),
+                               help);
+        }
+    }
+  else /* show real world units */
+    {
+      gdouble xres;
+      gdouble yres;
+
+      gimp_image_get_resolution (gimp_display_get_image (shell->display),
+                                 &xres, &yres);
+
+      gimp_statusbar_push (statusbar, context,
+                           icon_name,
+                           statusbar->cursor_format_str,
+                           title,
+                           gimp_pixels_to_units (x, shell->unit, xres),
+                           separator,
+                           gimp_pixels_to_units (y, shell->unit, yres),
+                           help);
+    }
+}
+
+void
+gimp_statusbar_push_length (GimpStatusbar       *statusbar,
+                            const gchar         *context,
+                            const gchar         *icon_name,
+                            const gchar         *title,
+                            GimpOrientationType  axis,
+                            gdouble              value,
+                            const gchar         *help)
+{
+  GimpDisplayShell *shell;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (title != NULL);
+
+  if (help == NULL)
+    help = "";
+
+  shell = statusbar->shell;
+
+  if (shell->unit == GIMP_UNIT_PIXEL)
+    {
+      gimp_statusbar_push (statusbar, context,
+                           icon_name,
+                           statusbar->length_format_str,
+                           title,
+                           (gint) RINT (value),
+                           help);
+    }
+  else /* show real world units */
+    {
+      gdouble xres;
+      gdouble yres;
+      gdouble resolution;
+
+      gimp_image_get_resolution (gimp_display_get_image (shell->display),
+                                 &xres, &yres);
+
+      switch (axis)
+        {
+        case GIMP_ORIENTATION_HORIZONTAL:
+          resolution = xres;
+          break;
+
+        case GIMP_ORIENTATION_VERTICAL:
+          resolution = yres;
+          break;
+
+        default:
+          g_return_if_reached ();
+          break;
+        }
+
+      gimp_statusbar_push (statusbar, context,
+                           icon_name,
+                           statusbar->length_format_str,
+                           title,
+                           gimp_pixels_to_units (value, shell->unit, resolution),
+                           help);
+    }
+}
+
+void
+gimp_statusbar_replace (GimpStatusbar *statusbar,
+                        const gchar   *context,
+                        const gchar   *icon_name,
+                        const gchar   *format,
+                        ...)
+{
+  va_list args;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (context != NULL);
+  g_return_if_fail (format != NULL);
+
+  va_start (args, format);
+  gimp_statusbar_replace_valist (statusbar, context, icon_name, format, args);
+  va_end (args);
+}
+
+void
+gimp_statusbar_replace_valist (GimpStatusbar *statusbar,
+                               const gchar   *context,
+                               const gchar   *icon_name,
+                               const gchar   *format,
+                               va_list        args)
+{
+  guint context_id;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (context != NULL);
+  g_return_if_fail (format != NULL);
+
+  context_id = gimp_statusbar_get_context_id (statusbar, context);
+
+  gimp_statusbar_add_message (statusbar,
+                              context_id,
+                              icon_name, format, args,
+                              /*  move_to_front =  */ FALSE);
+}
+
+const gchar *
+gimp_statusbar_peek (GimpStatusbar *statusbar,
+                     const gchar   *context)
+{
+  GSList *list;
+  guint   context_id;
+
+  g_return_val_if_fail (GIMP_IS_STATUSBAR (statusbar), NULL);
+  g_return_val_if_fail (context != NULL, NULL);
+
+  context_id = gimp_statusbar_get_context_id (statusbar, context);
+
+  for (list = statusbar->messages; list; list = list->next)
+    {
+      GimpStatusbarMsg *msg = list->data;
+
+      if (msg->context_id == context_id)
+        {
+          return msg->text;
+        }
+    }
+
+  return NULL;
+}
+
+void
+gimp_statusbar_pop (GimpStatusbar *statusbar,
+                    const gchar   *context)
+{
+  guint context_id;
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (context != NULL);
+
+  context_id = gimp_statusbar_get_context_id (statusbar, context);
+
+  gimp_statusbar_remove_message (statusbar,
+                                 context_id);
+}
+
+void
+gimp_statusbar_push_temp (GimpStatusbar       *statusbar,
+                          GimpMessageSeverity  severity,
+                          const gchar         *icon_name,
+                          const gchar         *format,
+                          ...)
+{
+  va_list args;
+
+  va_start (args, format);
+  gimp_statusbar_push_temp_valist (statusbar, severity, icon_name, format, args);
+  va_end (args);
+}
+
+void
+gimp_statusbar_push_temp_valist (GimpStatusbar       *statusbar,
+                                 GimpMessageSeverity  severity,
+                                 const gchar         *icon_name,
+                                 const gchar         *format,
+                                 va_list              args)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+  g_return_if_fail (severity <= GIMP_MESSAGE_WARNING);
+  g_return_if_fail (format != NULL);
+
+  /*  don't accept a message if we are already displaying a more severe one  */
+  if (statusbar->temp_timeout_id && statusbar->temp_severity > severity)
+    return;
+
+  if (statusbar->temp_timeout_id)
+    g_source_remove (statusbar->temp_timeout_id);
+
+  statusbar->temp_timeout_id =
+    g_timeout_add (MESSAGE_TIMEOUT,
+                   (GSourceFunc) gimp_statusbar_temp_timeout, statusbar);
+
+  statusbar->temp_severity = severity;
+
+  gimp_statusbar_add_message (statusbar,
+                              statusbar->temp_context_id,
+                              icon_name, format, args,
+                              /*  move_to_front =  */ TRUE);
+
+  if (severity >= GIMP_MESSAGE_WARNING)
+    gimp_widget_blink (statusbar->label);
+}
+
+void
+gimp_statusbar_pop_temp (GimpStatusbar *statusbar)
+{
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  if (statusbar->temp_timeout_id)
+    {
+      g_source_remove (statusbar->temp_timeout_id);
+      statusbar->temp_timeout_id = 0;
+
+      gimp_statusbar_remove_message (statusbar,
+                                     statusbar->temp_context_id);
+    }
+}
+
+void
+gimp_statusbar_update_cursor (GimpStatusbar       *statusbar,
+                              GimpCursorPrecision  precision,
+                              gdouble              x,
+                              gdouble              y)
+{
+  GimpDisplayShell *shell;
+  GimpImage        *image;
+  gchar             buffer[CURSOR_LEN];
+
+  g_return_if_fail (GIMP_IS_STATUSBAR (statusbar));
+
+  shell = statusbar->shell;
+  image = gimp_display_get_image (shell->display);
+
+  if (! image                            ||
+      x <  0                             ||
+      y <  0                             ||
+      x >= gimp_image_get_width  (image) ||
+      y >= gimp_image_get_height (image))
+    {
+      gtk_widget_set_sensitive (statusbar->cursor_label, FALSE);
+    }
+  else
+    {
+      gtk_widget_set_sensitive (statusbar->cursor_label, TRUE);
+    }
+
+  switch (precision)
+    {
+    case GIMP_CURSOR_PRECISION_PIXEL_CENTER:
+      x = (gint) x;
+      y = (gint) y;
+      break;
+
+    case GIMP_CURSOR_PRECISION_PIXEL_BORDER:
+      x = RINT (x);
+      y = RINT (y);
+      break;
+
+    case GIMP_CURSOR_PRECISION_SUBPIXEL:
+      break;
+    }
+
+  if (shell->unit == GIMP_UNIT_PIXEL)
+    {
+      if (precision == GIMP_CURSOR_PRECISION_SUBPIXEL)
+        {
+          g_snprintf (buffer, sizeof (buffer),
+                      statusbar->cursor_format_str_f,
+                      "", x, ", ", y, "");
+        }
+      else
+        {
+          g_snprintf (buffer, sizeof (buffer),
+                      statusbar->cursor_format_str,
+                      "", (gint) RINT (x), ", ", (gint) RINT (y), "");
+        }
+    }
+  else /* show real world units */
+    {
+      GtkTreeModel  *model;
+      GimpUnitStore *store;
+
+      model = gtk_combo_box_get_model (GTK_COMBO_BOX (statusbar->unit_combo));
+      store = GIMP_UNIT_STORE (model);
+
+      gimp_unit_store_set_pixel_values (store, x, y);
+      gimp_unit_store_get_values (store, shell->unit, &x, &y);
+
+      g_snprintf (buffer, sizeof (buffer),
+                  statusbar->cursor_format_str,
+                  "", x, ", ", y, "");
+    }
+
+  gtk_label_set_text (GTK_LABEL (statusbar->cursor_label), buffer);
+}
+
+void
+gimp_statusbar_clear_cursor (GimpStatusbar *statusbar)
+{
+  gtk_label_set_text (GTK_LABEL (statusbar->cursor_label), "");
+  gtk_widget_set_sensitive (statusbar->cursor_label, TRUE);
+}
+
+
+/*  private functions  */
+
+static gboolean
+gimp_statusbar_label_expose (GtkWidget      *widget,
+                             GdkEventExpose *event,
+                             GimpStatusbar  *statusbar)
+{
+  if (statusbar->icon)
+    {
+      cairo_t        *cr;
+      PangoRectangle  rect;
+      gint            x, y;
+
+      cr = gdk_cairo_create (event->window);
+
+      gdk_cairo_region (cr, event->region);
+      cairo_clip (cr);
+
+      gtk_label_get_layout_offsets (GTK_LABEL (widget), &x, &y);
+
+      pango_layout_index_to_pos (gtk_label_get_layout (GTK_LABEL (widget)), 0,
+                                 &rect);
+
+      /*  the rectangle width is negative when rendering right-to-left  */
+      x += PANGO_PIXELS (rect.x) + (rect.width < 0 ?
+                                    PANGO_PIXELS (rect.width) : 0);
+      y += PANGO_PIXELS (rect.y / ICON_SIZE);
+
+      gdk_cairo_set_source_pixbuf (cr, statusbar->icon, x, y);
+      cairo_paint (cr);
+
+      cairo_destroy (cr);
+    }
+
+  return FALSE;
+}
+
+static void
+gimp_statusbar_shell_scaled (GimpDisplayShell *shell,
+                             GimpStatusbar    *statusbar)
+{
+  static PangoLayout *layout = NULL;
+
+  GimpImage    *image = gimp_display_get_image (shell->display);
+  GtkTreeModel *model;
+  const gchar  *text;
+  gint          image_width;
+  gint          image_height;
+  gdouble       image_xres;
+  gdouble       image_yres;
+  gint          width;
+
+  if (image)
+    {
+      image_width  = gimp_image_get_width  (image);
+      image_height = gimp_image_get_height (image);
+      gimp_image_get_resolution (image, &image_xres, &image_yres);
+    }
+  else
+    {
+      image_width  = shell->disp_width;
+      image_height = shell->disp_height;
+      image_xres   = shell->display->config->monitor_xres;
+      image_yres   = shell->display->config->monitor_yres;
+    }
+
+  g_signal_handlers_block_by_func (statusbar->scale_combo,
+                                   gimp_statusbar_scale_changed, statusbar);
+  gimp_scale_combo_box_set_scale (GIMP_SCALE_COMBO_BOX (statusbar->scale_combo),
+                                  gimp_zoom_model_get_factor (shell->zoom));
+  g_signal_handlers_unblock_by_func (statusbar->scale_combo,
+                                     gimp_statusbar_scale_changed, statusbar);
+
+  model = gtk_combo_box_get_model (GTK_COMBO_BOX (statusbar->unit_combo));
+  gimp_unit_store_set_resolutions (GIMP_UNIT_STORE (model),
+                                   image_xres, image_yres);
+
+  g_signal_handlers_block_by_func (statusbar->unit_combo,
+                                   gimp_statusbar_unit_changed, statusbar);
+  gimp_unit_combo_box_set_active (GIMP_UNIT_COMBO_BOX (statusbar->unit_combo),
+                                  shell->unit);
+  g_signal_handlers_unblock_by_func (statusbar->unit_combo,
+                                     gimp_statusbar_unit_changed, statusbar);
+
+  if (shell->unit == GIMP_UNIT_PIXEL)
+    {
+      g_snprintf (statusbar->cursor_format_str,
+                  sizeof (statusbar->cursor_format_str),
+                  "%%s%%d%%s%%d%%s");
+      g_snprintf (statusbar->cursor_format_str_f,
+                  sizeof (statusbar->cursor_format_str_f),
+                  "%%s%%.1f%%s%%.1f%%s");
+      g_snprintf (statusbar->length_format_str,
+                  sizeof (statusbar->length_format_str),
+                  "%%s%%d%%s");
+    }
+  else /* show real world units */
+    {
+      gint w_digits;
+      gint h_digits;
+
+      w_digits = gimp_unit_get_scaled_digits (shell->unit, image_xres);
+      h_digits = gimp_unit_get_scaled_digits (shell->unit, image_yres);
+
+      g_snprintf (statusbar->cursor_format_str,
+                  sizeof (statusbar->cursor_format_str),
+                  "%%s%%.%df%%s%%.%df%%s",
+                  w_digits, h_digits);
+      strcpy (statusbar->cursor_format_str_f, statusbar->cursor_format_str);
+      g_snprintf (statusbar->length_format_str,
+                  sizeof (statusbar->length_format_str),
+                  "%%s%%.%df%%s", MAX (w_digits, h_digits));
+    }
+
+  gimp_statusbar_update_cursor (statusbar, GIMP_CURSOR_PRECISION_SUBPIXEL,
+                                -image_width, -image_height);
+
+  text = gtk_label_get_text (GTK_LABEL (statusbar->cursor_label));
+
+  /* one static layout for all displays should be fine */
+  if (! layout)
+    layout = gtk_widget_create_pango_layout (statusbar->cursor_label, NULL);
+
+  pango_layout_set_text (layout, text, -1);
+  pango_layout_get_pixel_size (layout, &width, NULL);
+
+  gtk_widget_set_size_request (statusbar->cursor_label, width, -1);
+
+  gimp_statusbar_clear_cursor (statusbar);
+}
+
+static void
+gimp_statusbar_shell_rotated (GimpDisplayShell *shell,
+                              GimpStatusbar    *statusbar)
+{
+  if (shell->rotate_angle != 0.0)
+    {
+      /* Degree symbol U+00B0. There are no spaces between the value and the
+       * unit for angular rotation.
+       */
+      gchar *text = g_strdup_printf (" %.2f\xC2\xB0", shell->rotate_angle);
+
+      gtk_label_set_text (GTK_LABEL (statusbar->rotate_label), text);
+      g_free (text);
+
+      gtk_widget_show (statusbar->rotate_widget);
+    }
+  else
+    {
+      gtk_widget_hide (statusbar->rotate_widget);
+    }
+
+  if (shell->flip_horizontally)
+    gtk_widget_show (statusbar->horizontal_flip_icon);
+  else
+    gtk_widget_hide (statusbar->horizontal_flip_icon);
+
+  if (shell->flip_vertically)
+    gtk_widget_show (statusbar->vertical_flip_icon);
+  else
+    gtk_widget_hide (statusbar->vertical_flip_icon);
+}
+
+static void
+gimp_statusbar_shell_status_notify (GimpDisplayShell *shell,
+                                    const GParamSpec *pspec,
+                                    GimpStatusbar    *statusbar)
+{
+  gimp_statusbar_replace (statusbar, "title",
+                          NULL, "%s", shell->status);
+}
+
+static void
+gimp_statusbar_unit_changed (GimpUnitComboBox *combo,
+                             GimpStatusbar    *statusbar)
+{
+  gimp_display_shell_set_unit (statusbar->shell,
+                               gimp_unit_combo_box_get_active (combo));
+}
+
+static void
+gimp_statusbar_scale_changed (GimpScaleComboBox *combo,
+                              GimpStatusbar     *statusbar)
+{
+  gimp_display_shell_scale (statusbar->shell,
+                            GIMP_ZOOM_TO,
+                            gimp_scale_combo_box_get_scale (combo),
+                            GIMP_ZOOM_FOCUS_BEST_GUESS);
+}
+
+static void
+gimp_statusbar_scale_activated (GimpScaleComboBox *combo,
+                                GimpStatusbar     *statusbar)
+{
+  gtk_widget_grab_focus (statusbar->shell->canvas);
+}
+
+static gboolean
+gimp_statusbar_rotate_pressed (GtkWidget     *event_box,
+                               GdkEvent      *event,
+                               GimpStatusbar *statusbar)
+{
+  GimpImageWindow *window = gimp_display_shell_get_window (statusbar->shell);
+  GimpUIManager   *manager = gimp_image_window_get_ui_manager (window);
+
+  gimp_ui_manager_activate_action (manager, "view", "view-rotate-other");
+  return FALSE;
+}
+
+static gboolean
+gimp_statusbar_horiz_flip_pressed (GtkWidget     *event_box,
+                                   GdkEvent      *event,
+                                   GimpStatusbar *statusbar)
+{
+  GimpImageWindow *window = gimp_display_shell_get_window (statusbar->shell);
+  GimpUIManager   *manager = gimp_image_window_get_ui_manager (window);
+
+  gimp_ui_manager_activate_action (manager, "view", "view-flip-horizontally");
+
+  return FALSE;
+}
+
+static gboolean
+gimp_statusbar_vert_flip_pressed (GtkWidget     *event_box,
+                                  GdkEvent      *event,
+                                  GimpStatusbar *statusbar)
+{
+  GimpImageWindow *window = gimp_display_shell_get_window (statusbar->shell);
+  GimpUIManager   *manager = gimp_image_window_get_ui_manager (window);
+
+  gimp_ui_manager_activate_action (manager, "view", "view-flip-vertically");
+
+  return FALSE;
+}
+
+static guint
+gimp_statusbar_get_context_id (GimpStatusbar *statusbar,
+                               const gchar   *context)
+{
+  guint id = GPOINTER_TO_UINT (g_hash_table_lookup (statusbar->context_ids,
+                                                    context));
+
+  if (! id)
+    {
+      id = statusbar->seq_context_id++;
+
+      g_hash_table_insert (statusbar->context_ids,
+                           g_strdup (context), GUINT_TO_POINTER (id));
+    }
+
+  return id;
+}
+
+static gboolean
+gimp_statusbar_temp_timeout (GimpStatusbar *statusbar)
+{
+  gimp_statusbar_pop_temp (statusbar);
+
+  return FALSE;
+}
+
+static void
+gimp_statusbar_add_message (GimpStatusbar *statusbar,
+                            guint          context_id,
+                            const gchar   *icon_name,
+                            const gchar   *format,
+                            va_list        args,
+                            gboolean       move_to_front)
+{
+  gchar            *message;
+  GSList           *list;
+  GimpStatusbarMsg *msg;
+  gint              position;
+
+  message = gimp_statusbar_vprintf (format, args);
+
+  for (list = statusbar->messages; list; list = g_slist_next (list))
+    {
+      msg = list->data;
+
+      if (msg->context_id == context_id)
+        {
+          gboolean is_front_message = (list == statusbar->messages);
+
+          if ((is_front_message || ! move_to_front) &&
+              strcmp (msg->text, message) == 0      &&
+              g_strcmp0 (msg->icon_name, icon_name) == 0)
+            {
+              g_free (message);
+              return;
+            }
+
+          if (move_to_front)
+            {
+              statusbar->messages = g_slist_remove (statusbar->messages, msg);
+              gimp_statusbar_msg_free (msg);
+
+              break;
+            }
+          else
+            {
+              g_free (msg->icon_name);
+              msg->icon_name = g_strdup (icon_name);
+
+              g_free (msg->text);
+              msg->text = message;
+
+              if (is_front_message)
+                gimp_statusbar_update (statusbar);
+
+              return;
+            }
+        }
+    }
+
+  msg = g_slice_new (GimpStatusbarMsg);
+
+  msg->context_id = context_id;
+  msg->icon_name  = g_strdup (icon_name);
+  msg->text       = message;
+
+  /*  find the position at which to insert the new message  */
+  position = 0;
+  /*  progress messages are always at the front of the list  */
+  if (! (statusbar->progress_active &&
+         context_id == gimp_statusbar_get_context_id (statusbar, "progress")))
+    {
+      if (statusbar->progress_active)
+        position++;
+
+      /*  temporary messages are in front of all other non-progress messages  */
+      if (statusbar->temp_timeout_id &&
+          context_id != statusbar->temp_context_id)
+        position++;
+    }
+
+  statusbar->messages = g_slist_insert (statusbar->messages, msg, position);
+
+  if (position == 0)
+    gimp_statusbar_update (statusbar);
+}
+
+static void
+gimp_statusbar_remove_message (GimpStatusbar *statusbar,
+                               guint          context_id)
+{
+  GSList   *list;
+  gboolean  needs_update = FALSE;
+
+  for (list = statusbar->messages; list; list = g_slist_next (list))
+    {
+      GimpStatusbarMsg *msg = list->data;
+
+      if (msg->context_id == context_id)
+        {
+          needs_update = (list == statusbar->messages);
+
+          statusbar->messages = g_slist_remove (statusbar->messages, msg);
+          gimp_statusbar_msg_free (msg);
+
+          break;
+        }
+    }
+
+  if (needs_update)
+    gimp_statusbar_update (statusbar);
+}
+
+static void
+gimp_statusbar_msg_free (GimpStatusbarMsg *msg)
+{
+  g_free (msg->icon_name);
+  g_free (msg->text);
+
+  g_slice_free (GimpStatusbarMsg, msg);
+}
+
+static gchar *
+gimp_statusbar_vprintf (const gchar *format,
+                        va_list      args)
+{
+  gchar *message;
+  gchar *newline;
+
+  message = g_strdup_vprintf (format, args);
+
+  /*  guard us from multi-line strings  */
+  newline = strchr (message, '\r');
+  if (newline)
+    *newline = '\0';
+
+  newline = strchr (message, '\n');
+  if (newline)
+    *newline = '\0';
+
+  return message;
+}
+
+static GdkPixbuf *
+gimp_statusbar_load_icon (GimpStatusbar *statusbar,
+                          const gchar   *icon_name)
+{
+  GdkPixbuf *icon;
+
+  if (G_UNLIKELY (! statusbar->icon_hash))
+    {
+      statusbar->icon_hash =
+        g_hash_table_new_full (g_str_hash,
+                               g_str_equal,
+                               (GDestroyNotify) g_free,
+                               (GDestroyNotify) g_object_unref);
+    }
+
+  icon = g_hash_table_lookup (statusbar->icon_hash, icon_name);
+
+  if (icon)
+    return g_object_ref (icon);
+
+  icon = gimp_widget_load_icon (statusbar->label, icon_name, ICON_SIZE);
+
+  /* this is not optimal but so what */
+  if (g_hash_table_size (statusbar->icon_hash) > 16)
+    g_hash_table_remove_all (statusbar->icon_hash);
+
+  g_hash_table_insert (statusbar->icon_hash,
+                       g_strdup (icon_name), g_object_ref (icon));
+
+  return icon;
+}