[gtk+/wip/baedert/gtkimageview: 17/31] GtkImageView: Replace zoom-mode with fit-allocation



commit 9aff130faa5839249e621ede41693dfc8dc33377
Author: Timm Bäder <mail baedert org>
Date:   Tue Jul 7 19:54:19 2015 +0200

    GtkImageView: Replace zoom-mode with fit-allocation

 demos/gtk-demo/image_view.c  |   27 +-----
 demos/gtk-demo/image_view.ui |   10 +--
 gtk/gtkimageview.c           |  228 ++++++++++++++++++++++++------------------
 gtk/gtkimageview.h           |   20 +---
 4 files changed, 141 insertions(+), 144 deletions(-)
---
diff --git a/demos/gtk-demo/image_view.c b/demos/gtk-demo/image_view.c
index 0d6f95c..7fd3af4 100644
--- a/demos/gtk-demo/image_view.c
+++ b/demos/gtk-demo/image_view.c
@@ -37,23 +37,6 @@ load_button_cb ()
 }
 
 void
-zoom_mode_changed_cb (GtkComboBox *widget,
-                      gpointer     user_data)
-{
-  const gchar *new_id = gtk_combo_box_get_active_id (widget);
-
-  if (g_strcmp0 (new_id, "fit") == 0)
-    gtk_image_view_set_zoom_mode (GTK_IMAGE_VIEW (image_view),
-                                  GTK_IMAGE_VIEW_ZOOM_MODE_FIT);
-  else if (g_strcmp0 (new_id, "original") == 0)
-    gtk_image_view_set_zoom_mode (GTK_IMAGE_VIEW (image_view),
-                                  GTK_IMAGE_VIEW_ZOOM_MODE_ORIGINAL);
-  else
-    g_error (new_id);
-
-}
-
-void
 angle_changed_cb (GtkRange *range,
                   gpointer  user_data)
 {
@@ -142,8 +125,8 @@ do_image_view (GtkWidget *do_widget)
          image_view   = GTK_WIDGET (gtk_builder_get_object (builder, "image_view"));
           uri_entry   = GTK_WIDGET (gtk_builder_get_object (builder, "uri_entry"));
   GtkWidget *box      = GTK_WIDGET (gtk_builder_get_object (builder, "box"));
-  GtkWidget *zoom_mode_combo   = GTK_WIDGET (gtk_builder_get_object (builder, "zoom_mode_combo"));
   GtkWidget *snap_angle_button = GTK_WIDGET (gtk_builder_get_object (builder, "snap_angle_check_button"));
+  GtkWidget *fit_allocation_button = GTK_WIDGET (gtk_builder_get_object (builder, 
"fit_allocation_check_button"));
   GtkWidget *header_bar = gtk_header_bar_new ();
   gtk_header_bar_set_show_close_button (GTK_HEADER_BAR (header_bar), TRUE);
   gtk_window_set_titlebar (GTK_WINDOW (window), header_bar);
@@ -157,14 +140,10 @@ do_image_view (GtkWidget *do_widget)
                           G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
   g_object_bind_property (image_view, "snap-angle", snap_angle_button, "active",
                           G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
+  g_object_bind_property (image_view, "fit-allocation", fit_allocation_button, "active",
+                          G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
 
 
-
-  if (gtk_image_view_get_zoom_mode (GTK_IMAGE_VIEW (image_view)) == GTK_IMAGE_VIEW_ZOOM_MODE_FIT)
-    gtk_combo_box_set_active_id (GTK_COMBO_BOX (zoom_mode_combo), "fit");
-  else if (gtk_image_view_get_zoom_mode (GTK_IMAGE_VIEW (image_view)) == GTK_IMAGE_VIEW_ZOOM_MODE_ORIGINAL)
-    gtk_combo_box_set_active_id (GTK_COMBO_BOX (zoom_mode_combo), "original");
-
   gtk_container_add (GTK_CONTAINER (window), box);
   gtk_builder_connect_signals (builder, NULL);
 
diff --git a/demos/gtk-demo/image_view.ui b/demos/gtk-demo/image_view.ui
index 99233c7..28df6df 100644
--- a/demos/gtk-demo/image_view.ui
+++ b/demos/gtk-demo/image_view.ui
@@ -67,15 +67,9 @@
 
 
         <child>
-          <object class="GtkComboBoxText" id="zoom_mode_combo">
+          <object class="GtkCheckButton" id="fit_allocation_check_button">
             <property name="visible">true</property>
-            <signal name="changed" handler="zoom_mode_changed_cb" />
-
-            <items>
-              <item id="fit">ZOOM_MODE_FIT</item>
-              <item id="original">ZOOM_MODE_ORIGINAL</item>
-            </items>
-
+            <property name="label" translatable="yes">Fit Allocation</property>
           </object>
           <packing>
             <property name="left_attach">0</property>
diff --git a/gtk/gtkimageview.c b/gtk/gtkimageview.c
index 5c4865c..849b687 100644
--- a/gtk/gtkimageview.c
+++ b/gtk/gtkimageview.c
@@ -22,14 +22,13 @@
 
 #define TRANSITION_DURATION (200.0 * 1000.0)
 
-
-
 struct _GtkImageViewPrivate
 {
   double   scale;
   double   angle;
-  int      zoom_mode;
   gboolean snap_angle;
+  gboolean fit_allocation;
+  gboolean scale_set;
 
   GtkGesture *rotate_gesture;
   GtkGesture *zoom_gesture;
@@ -58,11 +57,12 @@ struct _GtkImageViewPrivate
 enum
 {
   PROP_SCALE = 1,
+  PROP_SCALE_SET,
   PROP_ANGLE,
-  PROP_ZOOM_MODE,
   PROP_ROTATE_ENABLED,
   PROP_ZOOM_ENABLED,
   PROP_SNAP_ANGLE,
+  PROP_FIT_ALLOCATION,
   LAST_WIDGET_PROPERTY,
   PROP_HADJUSTMENT,
   PROP_VADJUSTMENT,
@@ -97,7 +97,8 @@ gtk_image_view_init (GtkImageView *image_view)
   priv->scale = 1.0;
   priv->angle = 0.0;
   priv->snap_angle = FALSE;
-  priv->zoom_mode = GTK_IMAGE_VIEW_ZOOM_MODE_FIT;
+  priv->fit_allocation = FALSE;
+  priv->scale_set = FALSE;
   priv->rotate_gesture = gtk_gesture_rotate_new ((GtkWidget *)image_view);
   priv->zoom_gesture = gtk_gesture_zoom_new ((GtkWidget *)image_view);
 
@@ -223,15 +224,20 @@ static void
 gtk_image_view_compute_bounding_box (GtkImageView *image_view,
                                      int          *width,
                                      int          *height,
-                                     double       *scale)
+                                     double       *scale_out)
 {
-  // XXX Rework this to have less code duplication
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   GtkAllocation alloc;
   int image_width;
   int image_height;
   int bb_width  = 0;
   int bb_height = 0;
+  double upper_right_degrees;
+  double upper_left_degrees;
+  double r;
+  int upper_right_x, upper_right_y;
+  int upper_left_x, upper_left_y;
+  double scale;
 
 
   if (!priv->image_surface)
@@ -245,59 +251,61 @@ gtk_image_view_compute_bounding_box (GtkImageView *image_view,
   image_width  = cairo_image_surface_get_width (priv->image_surface);
   image_height = cairo_image_surface_get_height (priv->image_surface);
 
-  if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_FIT ||
-      priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_ORIGINAL)
-    {
-      int final_width  = image_width;
-      int final_height = image_height;
+  upper_right_degrees = DEG_TO_RAD (priv->angle) + atan ((double)image_height / (double)image_width);
+  upper_left_degrees  = DEG_TO_RAD (priv->angle) + atan ((double)image_height / -(double)image_width);
+  r = sqrtf ((image_width / 2) * (image_width / 2) + (image_height / 2) * (image_height / 2));
 
-      double upper_right_degrees = DEG_TO_RAD (priv->angle) + atan ((double)final_height / 
(double)final_width);
-      double upper_left_degrees  = DEG_TO_RAD (priv->angle) + atan ((double)final_height / 
-(double)final_width);
-      double r = sqrtf ((final_width / 2) * (final_width / 2) + (final_height / 2) * (final_height / 2));
+  upper_right_x = r * cos (upper_right_degrees);
+  upper_right_y = r * sin (upper_right_degrees);
 
-      int upper_right_x = r * cos (upper_right_degrees);
-      int upper_right_y = r * sin (upper_right_degrees);
+  upper_left_x = r * cos (upper_left_degrees);
+  upper_left_y = r * sin (upper_left_degrees);
 
-      int upper_left_x = r * cos (upper_left_degrees);
-      int upper_left_y = r * sin (upper_left_degrees);
 
+  //
+  bb_width  = MAX (fabs (upper_right_x), fabs (upper_left_x)) * 2;
+  bb_height = MAX (fabs (upper_right_y), fabs (upper_left_y)) * 2;
 
-      //
-      bb_width  = MAX (fabs (upper_right_x), fabs (upper_left_x)) * 2;
-      bb_height = MAX (fabs (upper_right_y), fabs (upper_left_y)) * 2;
 
+  if (!priv->scale_set)
+    {
       double scale_x = (double)alloc.width / (double)bb_width;
       double scale_y = (double)alloc.height / (double)bb_height;
 
-      if (scale)
-        *scale = MIN (MIN (scale_x, scale_y), 1.0);
+      scale = MIN (MIN (scale_x, scale_y), 1.0);
+    }
+  else
+    scale = priv->scale;
+
+
+  if (scale_out)
+    {
+    // XXX Care about scale_set
+      *scale_out = scale;
+    }
 
-      priv->scale = *scale;
+  if (priv->fit_allocation)
+    {
+      priv->scale = scale;
       g_object_notify_by_pspec ((GObject *)image_view,
                                 widget_props[PROP_SCALE]);
 
-      if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_FIT)
+      *width  = bb_width * scale;
+      *height = bb_height * scale;
+    }
+  else
+    {
+      if (priv->scale_set)
         {
-          *width = bb_width * *scale;
-          *height = bb_height * *scale;
+          *width  = bb_width * scale;
+          *height = bb_height * scale;
         }
-      else if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_ORIGINAL)
+      else
         {
-          *width = bb_width * *scale;
-          *height = bb_height * *scale;
+          *width  = bb_width;
+          *height = bb_height;
         }
-
-      return;
     }
-  else
-    {
-    }
-
-  *width  = image_width;
-  *height = image_height;
-
-  if (scale)
-    *scale  = 1.0;
 }
 
 static void
@@ -317,8 +325,12 @@ gtk_image_view_update_adjustments (GtkImageView *image_view)
 
 
 
-
-  if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_ORIGINAL)
+  if (priv->fit_allocation)
+    {
+      gtk_adjustment_set_upper (priv->vadjustment, 0);
+      gtk_adjustment_set_upper (priv->hadjustment, 0);
+    }
+  else
     {
       int width, height;
       gtk_image_view_compute_bounding_box (image_view,
@@ -327,16 +339,10 @@ gtk_image_view_update_adjustments (GtkImageView *image_view)
                                            NULL);
       gtk_adjustment_set_upper (priv->hadjustment, width);
       gtk_adjustment_set_upper (priv->vadjustment, height);
-    }
-  else if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_FIT)
-    {
-      gtk_adjustment_set_upper (priv->vadjustment,
-                                gtk_widget_get_allocated_width ((GtkWidget *)image_view));
 
-      gtk_adjustment_set_upper (priv->hadjustment,
-                                gtk_widget_get_allocated_height((GtkWidget *)image_view));
     }
 
+
   gtk_adjustment_set_page_size (priv->hadjustment,
                                 gtk_widget_get_allocated_width ((GtkWidget *)image_view));
   gtk_adjustment_set_page_size (priv->vadjustment,
@@ -407,8 +413,6 @@ gtk_image_view_draw (GtkWidget *widget, cairo_t *ct)
     draw_y = (alloc.height - image_height) / 2;
 
 
-  /*cairo_rectangle (ct, draw_x, draw_y, draw_width, draw_height);*/
-
   /* Rotate around the center */
   cairo_translate (ct, draw_x + (image_width / 2.0), draw_y + (image_height / 2.0));
   cairo_rotate (ct, DEG_TO_RAD (priv->angle));
@@ -489,12 +493,20 @@ gtk_image_view_set_scale (GtkImageView *image_view,
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
 
-  /*g_message ("Want to set new scale: %f", scale);*/
-
   priv->scale = scale;
-  /*gtk_image_view_set_zoom_mode (image_view, GTK_IMAGE_VIEW_ZOOM_MODE_NONE);*/
   g_object_notify_by_pspec ((GObject *)image_view,
                             widget_props[PROP_SCALE]);
+  priv->scale_set = TRUE;
+  g_object_notify_by_pspec ((GObject *)image_view,
+                            widget_props[PROP_SCALE_SET]);
+
+  if (priv->fit_allocation)
+    {
+      priv->fit_allocation = FALSE;
+      g_object_notify_by_pspec ((GObject *)image_view,
+                                widget_props[PROP_SCALE_SET]);
+    }
+
   gtk_widget_queue_resize ((GtkWidget *)image_view);
 }
 
@@ -524,6 +536,7 @@ gtk_image_view_set_angle (GtkImageView *image_view,
   g_object_notify_by_pspec ((GObject *)image_view,
                             widget_props[PROP_ANGLE]);
 
+  gtk_widget_queue_draw ((GtkWidget *)image_view);
   gtk_widget_queue_resize ((GtkWidget *)image_view);
 }
 
@@ -539,63 +552,74 @@ gtk_image_view_get_angle (GtkImageView *image_view)
 
 
 void
-gtk_image_view_set_zoom_mode (GtkImageView         *image_view,
-                              GtkImageViewZoomMode  zoom_mode)
+gtk_image_view_set_snap_angle (GtkImageView *image_view,
+                               gboolean     snap_angle)
 {
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
 
-  if (priv->zoom_mode == zoom_mode)
+  snap_angle = !!snap_angle;
+
+  if (snap_angle == priv->snap_angle)
     return;
 
-  priv->zoom_mode = zoom_mode;
+  priv->snap_angle = snap_angle;
   g_object_notify_by_pspec ((GObject *)image_view,
-                            widget_props[PROP_ANGLE]);
+                            widget_props[PROP_SNAP_ANGLE]);
 
-  gtk_widget_queue_resize ((GtkWidget *)image_view);
+  if (priv->snap_angle)
+    gtk_image_view_do_snapping (image_view, priv->angle);
 }
 
-GtkImageViewZoomMode
-gtk_image_view_get_zoom_mode (GtkImageView *image_view)
+gboolean
+gtk_image_view_get_snap_angle (GtkImageView *image_view)
 {
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
 
-  return priv->zoom_mode;
+  return priv->snap_angle;
 }
 
 
 
 void
-gtk_image_view_set_snap_angle (GtkImageView *image_view,
-                               gboolean     snap_angle)
+gtk_image_view_set_fit_allocation (GtkImageView *image_view,
+                                   gboolean      fit_allocation)
 {
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
 
-  snap_angle = !!snap_angle;
+  fit_allocation = !!fit_allocation;
 
-  if (snap_angle == priv->snap_angle)
+  if (fit_allocation == priv->fit_allocation)
     return;
 
-  priv->snap_angle = snap_angle;
+  priv->fit_allocation = fit_allocation;
   g_object_notify_by_pspec ((GObject *)image_view,
-                            widget_props[PROP_SNAP_ANGLE]);
+                            widget_props[PROP_FIT_ALLOCATION]);
 
-  if (priv->snap_angle)
-    gtk_image_view_do_snapping (image_view, priv->angle);
+  priv->scale_set = FALSE;
+  g_object_notify_by_pspec ((GObject *)image_view,
+                            widget_props[PROP_SCALE_SET]);
+
+  if (!priv->fit_allocation && !priv->scale_set)
+    {
+      priv->scale = 1.0;
+      g_object_notify_by_pspec ((GObject *)image_view,
+                                widget_props[PROP_SCALE]);
+    }
+
+  gtk_widget_queue_resize ((GtkWidget *)image_view);
 }
 
 gboolean
-gtk_image_view_get_snap_angle (GtkImageView *image_view)
+gtk_image_view_get_fit_allocation (GtkImageView *image_view)
 {
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
 
-  return priv->snap_angle;
+  return priv->fit_allocation;
 }
-
-
 /* }}} */
 
 
@@ -617,8 +641,11 @@ gtk_image_view_realize (GtkWidget *widget)
   attributes.height = allocation.height;
   attributes.window_type = GDK_WINDOW_CHILD;
   attributes.event_mask = gtk_widget_get_events (widget) |
-                           GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_POINTER_MOTION_MASK |
-                           GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK;
+                          GDK_POINTER_MOTION_MASK |
+                          GDK_BUTTON_PRESS_MASK |
+                          GDK_BUTTON_RELEASE_MASK |
+                          GDK_SMOOTH_SCROLL_MASK |
+                          GDK_SCROLL_MASK;
   attributes.wclass = GDK_INPUT_OUTPUT;
 
   window = gdk_window_new (gtk_widget_get_parent_window (widget),
@@ -663,14 +690,13 @@ gtk_image_view_get_preferred_height (GtkWidget *widget,
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
 
   int width, height;
-  double scale;
   gtk_image_view_compute_bounding_box (image_view,
                                        &width,
                                        &height,
-                                       &scale);
+                                       NULL);
 
 
-  if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_FIT)
+  if (priv->fit_allocation)
     {
       *minimal = 0;
       *natural = height;
@@ -690,13 +716,12 @@ gtk_image_view_get_preferred_width (GtkWidget *widget,
   GtkImageView *image_view  = (GtkImageView *)widget;
   GtkImageViewPrivate *priv = gtk_image_view_get_instance_private (image_view);
   int width, height;
-  double scale;
   gtk_image_view_compute_bounding_box (image_view,
                                        &width,
                                        &height,
-                                       &scale);
+                                       NULL);
 
-  if (priv->zoom_mode == GTK_IMAGE_VIEW_ZOOM_MODE_FIT)
+  if (priv->fit_allocation)
     {
       *minimal = 0;
       *natural = width;
@@ -729,12 +754,12 @@ gtk_image_view_set_property (GObject      *object,
       case PROP_ANGLE:
         gtk_image_view_set_angle (image_view, g_value_get_double (value));
         break;
-      case PROP_ZOOM_MODE:
-        gtk_image_view_set_zoom_mode (image_view, g_value_get_enum (value));
-        break;
       case PROP_SNAP_ANGLE:
         gtk_image_view_set_snap_angle (image_view, g_value_get_boolean (value));
         break;
+      case PROP_FIT_ALLOCATION:
+        gtk_image_view_set_fit_allocation (image_view, g_value_get_boolean (value));
+        break;
       case PROP_HADJUSTMENT:
         gtk_image_view_set_hadjustment (image_view, g_value_get_object (value));
         break;
@@ -769,12 +794,12 @@ gtk_image_view_get_property (GObject    *object,
       case PROP_ANGLE:
         g_value_set_double (value, priv->angle);
         break;
-      case PROP_ZOOM_MODE:
-        g_value_set_enum (value, priv->zoom_mode);
-        break;
       case PROP_SNAP_ANGLE:
         g_value_set_boolean (value, priv->snap_angle);
         break;
+      case PROP_FIT_ALLOCATION:
+        g_value_set_boolean (value, priv->fit_allocation);
+        break;
       case PROP_HADJUSTMENT:
         g_value_set_object (value, priv->hadjustment);
         break;
@@ -840,6 +865,12 @@ gtk_image_view_class_init (GtkImageViewClass *view_class)
                                                   0.0,
                                                   GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
 
+  widget_props[PROP_SCALE_SET] = g_param_spec_boolean ("scale-set",
+                                                       P_("Foo"),
+                                                       P_("fooar"),
+                                                       TRUE,
+                                                       GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
+
   widget_props[PROP_ANGLE] = g_param_spec_double ("angle",
                                                   P_("angle"),
                                                   P_("angle"),
@@ -848,13 +879,6 @@ gtk_image_view_class_init (GtkImageViewClass *view_class)
                                                   0.0,
                                                   GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
 
-  widget_props[PROP_ZOOM_MODE] = g_param_spec_enum("zoom-mode",
-                                                   P_("zoom mode"),
-                                                   P_("zoommode"),
-                                                   GTK_TYPE_IMAGE_VIEW_ZOOM_MODE,
-                                                   GTK_IMAGE_VIEW_ZOOM_MODE_NONE,
-                                                   GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
-
   widget_props[PROP_ROTATE_ENABLED] = g_param_spec_boolean ("rotate-gesture-enabled",
                                                             P_("Foo"),
                                                             P_("fooar"),
@@ -873,6 +897,14 @@ gtk_image_view_class_init (GtkImageViewClass *view_class)
                                                         GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
 
 
+  widget_props[PROP_FIT_ALLOCATION] = g_param_spec_boolean ("fit-allocation",
+                                                            P_("Foo"),
+                                                            P_("fooar"),
+                                                            FALSE,
+                                                            GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
+
+
+
 
   widget_signals[PREPARE_IMAGE] = g_signal_new (I_("prepare-image"),
                                                 G_TYPE_FROM_CLASS (object_class),
diff --git a/gtk/gtkimageview.h b/gtk/gtkimageview.h
index bcc3109..f3caf13 100644
--- a/gtk/gtkimageview.h
+++ b/gtk/gtkimageview.h
@@ -35,13 +35,6 @@ struct _GtkImageViewClass
   void (* prepare_image) (cairo_surface_t *image);
 };
 
-typedef enum
-{
-  GTK_IMAGE_VIEW_ZOOM_MODE_ORIGINAL,
-  GTK_IMAGE_VIEW_ZOOM_MODE_FIT,
-  GTK_IMAGE_VIEW_ZOOM_MODE_NONE
-} GtkImageViewZoomMode;
-
 
 GDK_AVAILABLE_IN_3_18
 GType         gtk_image_view_get_type (void) G_GNUC_CONST;
@@ -90,21 +83,20 @@ double gtk_image_view_get_angle (GtkImageView *image_view);
 
 
 GDK_AVAILABLE_IN_3_18
-void gtk_image_view_set_zoom_mode (GtkImageView         *image_view,
-                                   GtkImageViewZoomMode  zoom_mode);
+gboolean gtk_image_get_view_snap_angle (GtkImageView *image_view);
 
 GDK_AVAILABLE_IN_3_18
-GtkImageViewZoomMode gtk_image_view_get_zoom_mode (GtkImageView *image_view);
+void gtk_image_view_set_snap_angle (GtkImageView *image_view,
+                                    gboolean      snap_rotation);
 
 
 
 GDK_AVAILABLE_IN_3_18
-gboolean gtk_image_view_snap_angle (GtkImageView *image_view);
+gboolean gtk_image_view_get_fit_allocation (GtkImageView *image_view);
 
 GDK_AVAILABLE_IN_3_18
-void gtk_image_view_set_snap_angle (GtkImageView *image_view,
-                                    gboolean      snap_rotation);
-
+void gtk_image_view_set_fit_allocation (GtkImageView *image_view,
+                                        gboolean      fit_allocation);
 
 
 // XXX Adding a gtk_image_view_set_pixbuf would work, but we are working with animations internally...


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