[gimp/gtk3-port: 460/460] app: remove GimpScaleButton, it has not been used in ages

[Michael Natterer <mitch src gnome org>]

commit eb8393c3fe651fc68020a6cad044d7faf6f65e25
Author: Michael Natterer <mitch gimp org>
Date:   Sun May 20 02:19:26 2018 +0200

    app: remove GimpScaleButton, it has not been used in ages

 app/widgets/Makefile.am       |    2 -
 app/widgets/gimppropwidgets.c |  110 -----------------------
 app/widgets/gimppropwidgets.h |    2 -
 app/widgets/gimpscalebutton.c |  195 -----------------------------------------
 app/widgets/gimpscalebutton.h |   53 -----------
 5 files changed, 0 insertions(+), 362 deletions(-)
---
diff --git a/app/widgets/Makefile.am b/app/widgets/Makefile.am
index cc8b84b..13a64d0 100644
--- a/app/widgets/Makefile.am
+++ b/app/widgets/Makefile.am
@@ -328,8 +328,6 @@ libappwidgets_a_sources = \
        gimpsamplepointeditor.h         \
        gimpsavedialog.c                \
        gimpsavedialog.h                \
-       gimpscalebutton.c               \
-       gimpscalebutton.h               \
        gimpsearchpopup.c               \
        gimpsearchpopup.h               \
        gimpselectiondata.c             \
diff --git a/app/widgets/gimppropwidgets.c b/app/widgets/gimppropwidgets.c
index 4675f06..51eedde 100644
--- a/app/widgets/gimppropwidgets.c
+++ b/app/widgets/gimppropwidgets.c
@@ -46,7 +46,6 @@
 #include "gimplanguagecombobox.h"
 #include "gimplanguageentry.h"
 #include "gimplayermodebox.h"
-#include "gimpscalebutton.h"
 #include "gimpspinscale.h"
 #include "gimpview.h"
 #include "gimppolar.h"
@@ -441,115 +440,6 @@ gimp_prop_color_button_notify (GObject    *config,
 }
 
 
-/******************/
-/*  scale button  */
-/******************/
-
-static void   gimp_prop_scale_button_callback (GtkWidget  *widget,
-                                               gdouble     value,
-                                               GObject    *config);
-static void   gimp_prop_scale_button_notify   (GObject    *config,
-                                               GParamSpec *param_spec,
-                                               GtkWidget  *button);
-
-/**
- * gimp_prop_scale_button_new:
- * @config:        #GimpConfig object to which property is attached.
- * @property_name: Name of gdouble property
- *
- * Creates a #GimpScaleButton to set and display the value of a
- * gdouble property in a very space-efficient way.
- *
- * Return value:  A new #GimpScaleButton widget.
- *
- * Since GIMP 2.6
- */
-GtkWidget *
-gimp_prop_scale_button_new (GObject     *config,
-                            const gchar *property_name)
-{
-  GParamSpec *param_spec;
-  GtkWidget  *button;
-  gdouble     value;
-
-  param_spec = check_param_spec_w (config, property_name,
-                                   G_TYPE_PARAM_DOUBLE, G_STRFUNC);
-
-  if (! param_spec)
-    return NULL;
-
-  g_object_get (config,
-                param_spec->name, &value,
-                NULL);
-
-  button = gimp_scale_button_new (value,
-                                  G_PARAM_SPEC_DOUBLE (param_spec)->minimum,
-                                  G_PARAM_SPEC_DOUBLE (param_spec)->maximum);
-
-  set_param_spec (G_OBJECT (button), button, param_spec);
-
-  g_signal_connect (button, "value-changed",
-                    G_CALLBACK (gimp_prop_scale_button_callback),
-                    config);
-
-  connect_notify (config, property_name,
-                  G_CALLBACK (gimp_prop_scale_button_notify),
-                  button);
-
-  return button;
-}
-
-static void
-gimp_prop_scale_button_callback (GtkWidget *button,
-                                 gdouble    value,
-                                 GObject   *config)
-{
-  GParamSpec *param_spec;
-  gdouble     v;
-
-  param_spec = get_param_spec (G_OBJECT (button));
-  if (! param_spec)
-    return;
-
-  g_object_get (config, param_spec->name, &v, NULL);
-
-  if (v != value)
-    {
-      g_signal_handlers_block_by_func (config,
-                                       gimp_prop_scale_button_notify,
-                                       button);
-
-      g_object_set (config, param_spec->name, value, NULL);
-
-      g_signal_handlers_unblock_by_func (config,
-                                         gimp_prop_scale_button_notify,
-                                         button);
-    }
-}
-
-static void
-gimp_prop_scale_button_notify (GObject    *config,
-                               GParamSpec *param_spec,
-                               GtkWidget  *button)
-{
-  gdouble value;
-
-  g_object_get (config,
-                param_spec->name, &value,
-                NULL);
-
-  g_signal_handlers_block_by_func (button,
-                                   gimp_prop_scale_button_callback,
-                                   config);
-
-  gtk_scale_button_set_value (GTK_SCALE_BUTTON (button), value);
-
-  g_signal_handlers_unblock_by_func (button,
-                                     gimp_prop_scale_button_callback,
-                                     config);
-}
-
-
 /*****************/
 /*  adjustments  */
 /*****************/
diff --git a/app/widgets/gimppropwidgets.h b/app/widgets/gimppropwidgets.h
index 6393b10..3836fa1 100644
--- a/app/widgets/gimppropwidgets.h
+++ b/app/widgets/gimppropwidgets.h
@@ -57,8 +57,6 @@ GtkWidget * gimp_prop_color_button_new      (GObject       *config,
 
 /*  GParamDouble  */
 
-GtkWidget * gimp_prop_scale_button_new      (GObject       *config,
-                                             const gchar   *property_name);
 GtkWidget * gimp_prop_spin_scale_new        (GObject       *config,
                                              const gchar   *property_name,
                                              const gchar   *label,