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[eog] Bug 491197 – Avoiding zoom-in blurriness

commit 5fb71180039a1bc7992c7d2271f9c66a8811b2f3
Author: Brad Greco <grecobrad gmail com>
Date:   Tue May 12 12:47:47 2009 +0200

    Bug 491197 â?? Avoiding zoom-in blurriness
    
    Split the antialiasing setting up into interpolation and extrapolation.
    This way it can be disabled on zoom-in independently from the zoom-out
    setting and vice versa.
    UI changes by Evert Verhellen.
---
 ChangeLog                         |   20 ++++++++++
 data/eog-preferences-dialog.glade |   63 ++++++++++++++++++++++++++++++--
 data/eog-preferences-dialog.ui    |   60 +++++++++++++++++++++++++++++--
 data/eog.schemas.in               |   16 ++++++++-
 src/eog-config-keys.h             |    1 +
 src/eog-preferences-dialog.c      |   16 ++++++++
 src/eog-scroll-view.c             |   73 +++++++++++++++++++++++++++++++------
 src/eog-scroll-view.h             |    2 +
 src/eog-window.c                  |   64 +++++++++++++++++++++++++++------
 9 files changed, 285 insertions(+), 30 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 3c1fda8..71ad905 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,23 @@
+2009-05-12  Felix Riemann  <friemann svn gnome org>
+
+	* data/eog-preferences-dialog.glade:
+	* data/eog-preferences-dialog.ui:
+	* data/eog.schemas.in:
+	* src/eog-config-keys.h:
+	* src/eog-preferences-dialog.c
+	(eog_preferences_dialog_constructor):
+	* src/eog-scroll-view.c (is_zoomed_in), (is_zoomed_out),
+	(paint_iteration_idle), (request_paint_area),
+	(eog_scroll_view_set_antialiasing_in),
+	(eog_scroll_view_set_antialiasing_out),
+	(eog_scroll_view_set_image), (eog_scroll_view_init):
+	* src/eog-scroll-view.h:
+	* src/eog-window.c (eog_window_interp_in_type_changed_cb),
+	(eog_window_interp_out_type_changed_cb), (eog_window_construct_ui),
+	(eog_window_init):
+	Split the antialiasing setting to be able to disable smoothing when
+	zooming in. Fixes bug #491197 (Brad Greco, Evert Verhellen).
+
 2009-05-08  Felix Riemann  <friemann svn gnome org>
 
 	* src/eog-window.c (eog_window_cmd_about):
diff --git a/data/eog-preferences-dialog.glade b/data/eog-preferences-dialog.glade
index 31ec030..3ca79de 100644
--- a/data/eog-preferences-dialog.glade
+++ b/data/eog-preferences-dialog.glade
@@ -115,13 +115,13 @@
 		  </child>
 
 		  <child>
-		    <widget class="GtkHBox" id="hbox3">
+		    <widget class="GtkHBox" id="hbox_interpolate">
 		      <property name="visible">True</property>
 		      <property name="homogeneous">False</property>
 		      <property name="spacing">0</property>
 
 		      <child>
-			<widget class="GtkLabel" id="label7">
+			<widget class="GtkLabel" id="label_interpolate">
 			  <property name="visible">True</property>
 			  <property name="label">    </property>
 			  <property name="use_underline">False</property>
@@ -149,7 +149,64 @@
 			<widget class="GtkCheckButton" id="interpolate_check">
 			  <property name="visible">True</property>
 			  <property name="can_focus">True</property>
-			  <property name="label" translatable="yes">Smooth images when _zoomed</property>
+			  <property name="label" translatable="yes">Smooth images when zoomed-_out</property>
+			  <property name="use_underline">True</property>
+			  <property name="relief">GTK_RELIEF_NORMAL</property>
+			  <property name="focus_on_click">True</property>
+			  <property name="active">False</property>
+			  <property name="inconsistent">False</property>
+			  <property name="draw_indicator">True</property>
+			</widget>
+			<packing>
+			  <property name="padding">0</property>
+			  <property name="expand">False</property>
+			  <property name="fill">False</property>
+			</packing>
+		      </child>
+		    </widget>
+		    <packing>
+		      <property name="padding">0</property>
+		      <property name="expand">True</property>
+		      <property name="fill">True</property>
+		    </packing>
+		  </child>
+
+		  <child>
+		    <widget class="GtkHBox" id="hbox_extrapolate">
+		      <property name="visible">True</property>
+		      <property name="homogeneous">False</property>
+		      <property name="spacing">0</property>
+
+		      <child>
+			<widget class="GtkLabel" id="label_extrapolate">
+			  <property name="visible">True</property>
+			  <property name="label">    </property>
+			  <property name="use_underline">False</property>
+			  <property name="use_markup">False</property>
+			  <property name="justify">GTK_JUSTIFY_LEFT</property>
+			  <property name="wrap">False</property>
+			  <property name="selectable">False</property>
+			  <property name="xalign">0.5</property>
+			  <property name="yalign">0.5</property>
+			  <property name="xpad">0</property>
+			  <property name="ypad">0</property>
+			  <property name="ellipsize">PANGO_ELLIPSIZE_NONE</property>
+			  <property name="width_chars">-1</property>
+			  <property name="single_line_mode">False</property>
+			  <property name="angle">0</property>
+			</widget>
+			<packing>
+			  <property name="padding">0</property>
+			  <property name="expand">False</property>
+			  <property name="fill">False</property>
+			</packing>
+		      </child>
+
+		      <child>
+			<widget class="GtkCheckButton" id="extrapolate_check">
+			  <property name="visible">True</property>
+			  <property name="can_focus">True</property>
+			  <property name="label" translatable="yes">Smooth images when zoomed-_in</property>
 			  <property name="use_underline">True</property>
 			  <property name="relief">GTK_RELIEF_NORMAL</property>
 			  <property name="focus_on_click">True</property>
diff --git a/data/eog-preferences-dialog.ui b/data/eog-preferences-dialog.ui
index 198865f..09cc25b 100644
--- a/data/eog-preferences-dialog.ui
+++ b/data/eog-preferences-dialog.ui
@@ -110,12 +110,12 @@
                       </packing>
                     </child>
                     <child>
-                      <object class="GtkHBox" id="hbox3">
+                      <object class="GtkHBox" id="hbox_interpolate">
                         <property name="visible">True</property>
                         <property name="homogeneous">False</property>
                         <property name="spacing">0</property>
                         <child>
-                          <object class="GtkLabel" id="label7">
+                          <object class="GtkLabel" id="label_interpolate">
                             <property name="visible">True</property>
                             <property name="label">    </property>
                             <property name="use_underline">False</property>
@@ -142,7 +142,61 @@
                           <object class="GtkCheckButton" id="interpolate_check">
                             <property name="visible">True</property>
                             <property name="can_focus">True</property>
-                            <property name="label" translatable="yes">Smooth images when _zoomed</property>
+                            <property name="label" translatable="yes">Smooth images when zoomed-_out</property>
+                            <property name="use_underline">True</property>
+                            <property name="relief">GTK_RELIEF_NORMAL</property>
+                            <property name="focus_on_click">True</property>
+                            <property name="active">False</property>
+                            <property name="inconsistent">False</property>
+                            <property name="draw_indicator">True</property>
+                          </object>
+                          <packing>
+                            <property name="padding">0</property>
+                            <property name="expand">False</property>
+                            <property name="fill">False</property>
+                          </packing>
+                        </child>
+                      </object>
+                      <packing>
+                        <property name="padding">0</property>
+                        <property name="expand">True</property>
+                        <property name="fill">True</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="GtkHBox" id="hbox_extrapolate">
+                        <property name="visible">True</property>
+                        <property name="homogeneous">False</property>
+                        <property name="spacing">0</property>
+                        <child>
+                          <object class="GtkLabel" id="label_extrapolate">
+                            <property name="visible">True</property>
+                            <property name="label">    </property>
+                            <property name="use_underline">False</property>
+                            <property name="use_markup">False</property>
+                            <property name="justify">GTK_JUSTIFY_LEFT</property>
+                            <property name="wrap">False</property>
+                            <property name="selectable">False</property>
+                            <property name="xalign">0.5</property>
+                            <property name="yalign">0.5</property>
+                            <property name="xpad">0</property>
+                            <property name="ypad">0</property>
+                            <property name="ellipsize">PANGO_ELLIPSIZE_NONE</property>
+                            <property name="width_chars">-1</property>
+                            <property name="single_line_mode">False</property>
+                            <property name="angle">0</property>
+                          </object>
+                          <packing>
+                            <property name="padding">0</property>
+                            <property name="expand">False</property>
+                            <property name="fill">False</property>
+                          </packing>
+                        </child>
+                        <child>
+                          <object class="GtkCheckButton" id="extrapolate_check">
+                            <property name="visible">True</property>
+                            <property name="can_focus">True</property>
+                            <property name="label" translatable="yes">Smooth images when zoomed-_in</property>
                             <property name="use_underline">True</property>
                             <property name="relief">GTK_RELIEF_NORMAL</property>
                             <property name="focus_on_click">True</property>
diff --git a/data/eog.schemas.in b/data/eog.schemas.in
index 46be04e..7fff4c5 100644
--- a/data/eog.schemas.in
+++ b/data/eog.schemas.in
@@ -21,13 +21,27 @@
       <default>1</default>
       <locale name="C">
 	<short>Interpolate Image</short>
-	<long>Whether the image should be interpolated on zoom or not.
+	<long>Whether the image should be interpolated on zoom-out or not.
 	This leads to better quality but is somewhat slower than non 
         interpolated images.</long>
       </locale>
     </schema>
 
     <schema>
+      <key>/schemas/apps/eog/view/extrapolate</key>
+      <applyto>/apps/eog/view/extrapolate</applyto>
+      <owner>eog</owner>
+      <type>bool</type>
+      <default>1</default>
+      <locale name="C">
+	<short>Extrapolate Image</short>
+	<long>Whether the image should be extrapolated on zoom-in or not.
+	This leads to blurry quality and is somewhat slower than non 
+        extrapolated images.</long>
+      </locale>
+    </schema>
+
+    <schema>
       <key>/schemas/apps/eog/view/transparency</key>
       <applyto>/apps/eog/view/transparency</applyto>
       <owner>eog</owner>
diff --git a/src/eog-config-keys.h b/src/eog-config-keys.h
index 2ffd3fe..f4da034 100644
--- a/src/eog-config-keys.h
+++ b/src/eog-config-keys.h
@@ -34,6 +34,7 @@
 #define EOG_CONF_DESKTOP_CAN_SETUP_PAGE 	"/desktop/gnome/lockdown/disable_print_setup"
 
 #define EOG_CONF_VIEW_INTERPOLATE		"/apps/eog/view/interpolate"
+#define EOG_CONF_VIEW_EXTRAPOLATE		"/apps/eog/view/extrapolate"
 #define EOG_CONF_VIEW_SCROLL_WHEEL_ZOOM		"/apps/eog/view/scroll_wheel_zoom"
 #define EOG_CONF_VIEW_ZOOM_MULTIPLIER		"/apps/eog/view/zoom_multiplier"
 #define EOG_CONF_VIEW_AUTOROTATE                "/apps/eog/view/autorotate"
diff --git a/src/eog-preferences-dialog.c b/src/eog-preferences-dialog.c
index d7e8757..75276ac 100644
--- a/src/eog-preferences-dialog.c
+++ b/src/eog-preferences-dialog.c
@@ -191,6 +191,7 @@ eog_preferences_dialog_constructor (GType type,
 	EogPreferencesDialogPrivate *priv;
 	GtkWidget *dlg;
 	GtkWidget *interpolate_check;
+	GtkWidget *extrapolate_check;
 	GtkWidget *autorotate_check;
 	GtkWidget *color_radio;
 	GtkWidget *checkpattern_radio;
@@ -217,6 +218,7 @@ eog_preferences_dialog_constructor (GType type,
 	eog_dialog_get_controls (EOG_DIALOG (object),
 			         "eog_preferences_dialog", &dlg,
 			         "interpolate_check", &interpolate_check,
+			         "extrapolate_check", &extrapolate_check,
 			         "autorotate_check", &autorotate_check,
 			         "color_radio", &color_radio,
 			         "checkpattern_radio", &checkpattern_radio,
@@ -238,15 +240,29 @@ eog_preferences_dialog_constructor (GType type,
 							     EOG_CONF_VIEW_INTERPOLATE,
 							     NULL));
 
+	gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (extrapolate_check),
+				      gconf_client_get_bool (priv->client,
+							     EOG_CONF_VIEW_EXTRAPOLATE,
+							     NULL));
+
 	g_object_set_data (G_OBJECT (interpolate_check),
 			   GCONF_OBJECT_KEY,
 			   EOG_CONF_VIEW_INTERPOLATE);
 
+	g_object_set_data (G_OBJECT (extrapolate_check),
+			   GCONF_OBJECT_KEY,
+			   EOG_CONF_VIEW_EXTRAPOLATE);
+
 	g_signal_connect (G_OBJECT (interpolate_check),
 			  "toggled",
 			  G_CALLBACK (pd_check_toggle_cb),
 			  priv->client);
 
+	g_signal_connect (G_OBJECT (extrapolate_check),
+			  "toggled",
+			  G_CALLBACK (pd_check_toggle_cb),
+			  priv->client);
+
 	gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (autorotate_check),
 				      gconf_client_get_bool (priv->client,
 							     EOG_CONF_VIEW_AUTOROTATE,
diff --git a/src/eog-scroll-view.c b/src/eog-scroll-view.c
index e9d54c8..6972077 100644
--- a/src/eog-scroll-view.c
+++ b/src/eog-scroll-view.c
@@ -105,8 +105,11 @@ struct _EogScrollViewPrivate {
 	/* handler ID for paint idle callback */
 	guint idle_id;
 
-	/* Interpolation type */
-	GdkInterpType interp_type;
+	/* Interpolation type when zoomed in*/
+	GdkInterpType interp_type_in;
+
+	/* Interpolation type when zoomed out*/
+	GdkInterpType interp_type_out;
 
 	/* Scroll wheel zoom */
 	gboolean scroll_wheel_zoom;
@@ -428,6 +431,26 @@ is_unity_zoom (EogScrollView *view)
 	return DOUBLE_EQUAL (priv->zoom, 1.0);
 }
 
+/* Returns whether the image is zoomed in */
+static gboolean
+is_zoomed_in (EogScrollView *view)
+{
+	EogScrollViewPrivate *priv;
+
+	priv = view->priv;
+	return priv->zoom - 1.0 > DOUBLE_EQUAL_MAX_DIFF;
+}
+
+/* Returns whether the image is zoomed out */
+static gboolean
+is_zoomed_out (EogScrollView *view)
+{
+	EogScrollViewPrivate *priv;
+
+	priv = view->priv;
+	return DOUBLE_EQUAL_MAX_DIFF + priv->zoom - 1.0 < 0.0;
+}
+
 /* Returns wether the image is movable, that means if it is larger then
  * the actual visible area.
  */
@@ -734,9 +757,15 @@ paint_iteration_idle (gpointer data)
 	if (eog_irect_empty (&rect)) {
 		eog_uta_free (priv->uta);
 		priv->uta = NULL;
-	} else
-		paint_rectangle (view, &rect, priv->interp_type);
-
+	} else {
+		if (is_zoomed_in (view))
+			paint_rectangle (view, &rect, priv->interp_type_in);
+		else if (is_zoomed_out (view))
+			paint_rectangle (view, &rect, priv->interp_type_out);
+		else
+			paint_rectangle (view, &rect, GDK_INTERP_NEAREST);
+	}
+		
 	if (!priv->uta) {
 		priv->idle_id = 0;
 		return FALSE;
@@ -774,7 +803,8 @@ request_paint_area (EogScrollView *view, GdkRectangle *area)
 		return;
 
 	/* Do nearest neighbor, 1:1 zoom or active progressive loading synchronously for speed.  */
-	if (priv->interp_type == GDK_INTERP_NEAREST ||
+	if ((is_zoomed_in (view) && priv->interp_type_in == GDK_INTERP_NEAREST) ||
+	    (is_zoomed_out (view) && priv->interp_type_out == GDK_INTERP_NEAREST) ||
 	    is_unity_zoom (view) ||
 	    priv->progressive_state == PROGRESSIVE_LOADING) {
 		paint_rectangle (view, &r, GDK_INTERP_NEAREST);
@@ -1664,7 +1694,25 @@ eog_scroll_view_set_zoom_upscale (EogScrollView *view, gboolean upscale)
 }
 
 void
-eog_scroll_view_set_antialiasing (EogScrollView *view, gboolean state)
+eog_scroll_view_set_antialiasing_in (EogScrollView *view, gboolean state)
+{
+	EogScrollViewPrivate *priv;
+	GdkInterpType new_interp_type;
+
+	g_return_if_fail (EOG_IS_SCROLL_VIEW (view));
+
+	priv = view->priv;
+
+	new_interp_type = state ? GDK_INTERP_BILINEAR : GDK_INTERP_NEAREST;
+
+	if (priv->interp_type_in != new_interp_type) {
+		priv->interp_type_in = new_interp_type;
+		gtk_widget_queue_draw (GTK_WIDGET (priv->display));
+	}
+}
+
+void
+eog_scroll_view_set_antialiasing_out (EogScrollView *view, gboolean state)
 {
 	EogScrollViewPrivate *priv;
 	GdkInterpType new_interp_type;
@@ -1675,8 +1723,8 @@ eog_scroll_view_set_antialiasing (EogScrollView *view, gboolean state)
 
 	new_interp_type = state ? GDK_INTERP_BILINEAR : GDK_INTERP_NEAREST;
 
-	if (priv->interp_type != new_interp_type) {
-		priv->interp_type = new_interp_type;
+	if (priv->interp_type_out != new_interp_type) {
+		priv->interp_type_out = new_interp_type;
 		gtk_widget_queue_draw (GTK_WIDGET (priv->display));
 	}
 }
@@ -1874,8 +1922,8 @@ eog_scroll_view_set_image (EogScrollView *view, EogImage *image)
 			gtk_widget_queue_draw (GTK_WIDGET (priv->display));
 
 		}
-		else if (priv->interp_type != GDK_INTERP_NEAREST &&
-			 !is_unity_zoom (view))
+		else if ((is_zoomed_in (view) && priv->interp_type_in != GDK_INTERP_NEAREST) ||
+			 (is_zoomed_out (view) && priv->interp_type_out != GDK_INTERP_NEAREST))
 		{
 			/* paint antialiased image version */
 			priv->progressive_state = PROGRESSIVE_POLISHING;
@@ -1916,7 +1964,8 @@ eog_scroll_view_init (EogScrollView *view)
 	priv->zoom_mode = ZOOM_MODE_FIT;
 	priv->upscale = FALSE;
 	priv->uta = NULL;
-	priv->interp_type = GDK_INTERP_BILINEAR;
+	priv->interp_type_in = GDK_INTERP_BILINEAR;
+	priv->interp_type_out = GDK_INTERP_BILINEAR;
 	priv->scroll_wheel_zoom = FALSE;
 	priv->zoom_multiplier = IMAGE_VIEW_ZOOM_MULTIPLIER;
 	priv->image = NULL;
diff --git a/src/eog-scroll-view.h b/src/eog-scroll-view.h
index 2771071..1e77f69 100644
--- a/src/eog-scroll-view.h
+++ b/src/eog-scroll-view.h
@@ -46,6 +46,8 @@ void     eog_scroll_view_set_scroll_wheel_zoom (EogScrollView *view, gboolean sc
 void     eog_scroll_view_set_zoom_upscale (EogScrollView *view, gboolean upscale);
 void     eog_scroll_view_set_zoom_multiplier (EogScrollView *view, gdouble multiplier);
 void     eog_scroll_view_set_antialiasing (EogScrollView *view, gboolean state);
+void     eog_scroll_view_set_antialiasing_in (EogScrollView *view, gboolean state);
+void     eog_scroll_view_set_antialiasing_out (EogScrollView *view, gboolean state);
 void     eog_scroll_view_set_transparency (EogScrollView *view, EogTransparencyStyle style, GdkColor *color);
 gboolean eog_scroll_view_scrollbars_visible (EogScrollView *view);
 void	 eog_scroll_view_set_popup (EogScrollView *view, GtkMenu *menu);
diff --git a/src/eog-window.c b/src/eog-window.c
index e0deaa3..58db63d 100644
--- a/src/eog-window.c
+++ b/src/eog-window.c
@@ -117,6 +117,7 @@ static gint signals[SIGNAL_LAST];
 /* GConfNotifications */
 enum {
 	EOG_WINDOW_NOTIFY_INTERPOLATE,
+	EOG_WINDOW_NOTIFY_EXTRAPOLATE,
 	EOG_WINDOW_NOTIFY_SCROLLWHEEL_ZOOM,
 	EOG_WINDOW_NOTIFY_ZOOM_MULTIPLIER,
 	EOG_WINDOW_NOTIFY_TRANSPARENCY,
@@ -223,13 +224,13 @@ eog_window_error_quark (void)
 }
 
 static void
-eog_window_interp_type_changed_cb (GConfClient *client,
-				   guint       cnxn_id,
-				   GConfEntry  *entry,
-				   gpointer    user_data)
+eog_window_interp_in_type_changed_cb (GConfClient *client,
+				      guint       cnxn_id,
+				      GConfEntry  *entry,
+				      gpointer    user_data)
 {
 	EogWindowPrivate *priv;
-	gboolean interpolate = TRUE;
+	gboolean interpolate_in = TRUE;
 
 	eog_debug (DEBUG_PREFERENCES);
 
@@ -240,11 +241,36 @@ eog_window_interp_type_changed_cb (GConfClient *client,
 	g_return_if_fail (EOG_IS_SCROLL_VIEW (priv->view));
 
 	if (entry->value != NULL && entry->value->type == GCONF_VALUE_BOOL) {
-		interpolate = gconf_value_get_bool (entry->value);
+		interpolate_in = gconf_value_get_bool (entry->value);
 	}
 
-	eog_scroll_view_set_antialiasing (EOG_SCROLL_VIEW (priv->view),
-					  interpolate);
+	eog_scroll_view_set_antialiasing_in (EOG_SCROLL_VIEW (priv->view),
+					  interpolate_in);
+}
+
+static void
+eog_window_interp_out_type_changed_cb (GConfClient *client,
+				       guint       cnxn_id,
+				       GConfEntry  *entry,
+				       gpointer    user_data)
+{
+	EogWindowPrivate *priv;
+	gboolean interpolate_out = TRUE;
+
+	eog_debug (DEBUG_PREFERENCES);
+
+	g_return_if_fail (EOG_IS_WINDOW (user_data));
+
+	priv = EOG_WINDOW (user_data)->priv;
+
+	g_return_if_fail (EOG_IS_SCROLL_VIEW (priv->view));
+
+	if (entry->value != NULL && entry->value->type == GCONF_VALUE_BOOL) {
+		interpolate_out = gconf_value_get_bool (entry->value);
+	}
+
+	eog_scroll_view_set_antialiasing_out (EOG_SCROLL_VIEW (priv->view),
+					  interpolate_out);
 }
 
 static void
@@ -4127,11 +4153,21 @@ eog_window_construct_ui (EogWindow *window)
 
 	gtk_box_pack_end (GTK_BOX (priv->cbox), priv->layout, TRUE, TRUE, 0);
 
+
+	entry = gconf_client_get_entry (priv->client,
+					EOG_CONF_VIEW_EXTRAPOLATE,
+					NULL, TRUE, NULL);
+	if (entry != NULL) {
+		eog_window_interp_in_type_changed_cb (priv->client, 0, entry, window);
+		gconf_entry_unref (entry);
+		entry = NULL;
+	}
+
 	entry = gconf_client_get_entry (priv->client,
 					EOG_CONF_VIEW_INTERPOLATE,
 					NULL, TRUE, NULL);
 	if (entry != NULL) {
-		eog_window_interp_type_changed_cb (priv->client, 0, entry, window);
+		eog_window_interp_out_type_changed_cb (priv->client, 0, entry, window);
 		gconf_entry_unref (entry);
 		entry = NULL;
 	}
@@ -4222,10 +4258,16 @@ eog_window_init (EogWindow *window)
 	gconf_client_add_dir (window->priv->client, EOG_CONF_DIR,
 			      GCONF_CLIENT_PRELOAD_RECURSIVE, NULL);
 
+	priv->client_notifications[EOG_WINDOW_NOTIFY_EXTRAPOLATE] =
+		gconf_client_notify_add (window->priv->client,
+				 	EOG_CONF_VIEW_EXTRAPOLATE,
+					 eog_window_interp_in_type_changed_cb,
+					 window, NULL, NULL);
+
 	priv->client_notifications[EOG_WINDOW_NOTIFY_INTERPOLATE] =
 		gconf_client_notify_add (window->priv->client,
-				 	EOG_CONF_VIEW_INTERPOLATE,
-					 eog_window_interp_type_changed_cb,
+				 	 EOG_CONF_VIEW_INTERPOLATE,
+					 eog_window_interp_out_type_changed_cb,
 					 window, NULL, NULL);
 
 	priv->client_notifications[EOG_WINDOW_NOTIFY_SCROLLWHEEL_ZOOM] =
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