[gtk+/gtk-3-14] image: Optimize non-resize changes

[Matthias Clasen <matthiasc src gnome org>]

commit 78475606c9b311580eef126ff3d88fe0f751293a
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jan 30 23:32:50 2015 -0500

    image: Optimize non-resize changes
    
    When the image content is changed, only queue a resize
    if the size is actually changing, otherwise just a
    redraw. Suggested by Owen in
    
    https://bugzilla.gnome.org/show_bug.cgi?id=613833

 gtk/gtkimage.c |  107 +++++++++++++++++++++++++++++++++++++++++++++++---------
 1 files changed, 90 insertions(+), 17 deletions(-)
---
diff --git a/gtk/gtkimage.c b/gtk/gtkimage.c
index 80b514d..fd1c4c7 100644
--- a/gtk/gtkimage.c
+++ b/gtk/gtkimage.c
@@ -149,6 +149,9 @@ static gint gtk_image_draw                 (GtkWidget    *widget,
 static void gtk_image_unmap                (GtkWidget    *widget);
 static void gtk_image_realize              (GtkWidget    *widget);
 static void gtk_image_unrealize            (GtkWidget    *widget);
+static void gtk_image_get_preferred_size   (GtkImage     *image,
+                                            gint         *width_out,
+                                            gint         *height_out);
 static void gtk_image_get_preferred_width  (GtkWidget    *widget,
                                             gint         *minimum,
                                             gint         *natural);
@@ -927,8 +930,8 @@ gtk_image_set_from_file   (GtkImage    *image,
   priv = image->priv;
 
   g_object_freeze_notify (G_OBJECT (image));
-  
-  gtk_image_clear (image);
+
+  gtk_image_reset (image);
 
   if (filename == NULL)
     {
@@ -941,9 +944,7 @@ gtk_image_set_from_file   (GtkImage    *image,
 
   if (anim == NULL)
     {
-      gtk_image_set_from_icon_name (image,
-                                    "image-missing",
-                                    DEFAULT_ICON_SIZE);
+      gtk_image_set_from_icon_name (image, "image-missing", DEFAULT_ICON_SIZE);
       g_object_thaw_notify (G_OBJECT (image));
       return;
     }
@@ -964,7 +965,21 @@ gtk_image_set_from_file   (GtkImage    *image,
   g_object_unref (anim);
 
   priv->filename = g_strdup (filename);
-  
+
+  if (gtk_widget_get_visible (GTK_WIDGET (image)))
+    {
+      gint width, height;
+
+      gtk_image_get_preferred_size (image, &width, &height);
+      if (width != gtk_widget_get_allocated_width (GTK_WIDGET (image)) ||
+          height != gtk_widget_get_allocated_height (GTK_WIDGET (image)))
+        gtk_widget_queue_resize (GTK_WIDGET (image));
+      else
+        gtk_widget_queue_draw (GTK_WIDGET (image));
+    }
+
+  g_object_notify (G_OBJECT (image), "file");
+
   g_object_thaw_notify (G_OBJECT (image));
 }
 
@@ -1001,9 +1016,7 @@ gtk_image_set_from_resource (GtkImage    *image,
 
   if (animation == NULL)
     {
-      gtk_image_set_from_icon_name (image,
-                                    "image-missing",
-                                    DEFAULT_ICON_SIZE);
+      gtk_image_set_from_icon_name (image, "image-missing", DEFAULT_ICON_SIZE);
       g_object_thaw_notify (G_OBJECT (image));
       return;
     }
@@ -1039,18 +1052,29 @@ gtk_image_set_from_pixbuf (GtkImage  *image,
   GtkImagePrivate *priv;
 
   g_return_if_fail (GTK_IS_IMAGE (image));
-  g_return_if_fail (pixbuf == NULL ||
-                    GDK_IS_PIXBUF (pixbuf));
+  g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));
 
   priv = image->priv;
 
   g_object_freeze_notify (G_OBJECT (image));
-  
-  gtk_image_clear (image);
+
+  gtk_image_reset (image);
 
   if (pixbuf != NULL)
     _gtk_icon_helper_set_pixbuf (priv->icon_helper, pixbuf);
 
+  if (gtk_widget_get_visible (GTK_WIDGET (image)))
+    {
+      gint width, height;
+
+      gtk_image_get_preferred_size (image, &width, &height);
+      if (width != gtk_widget_get_allocated_width (GTK_WIDGET (image)) ||
+          height != gtk_widget_get_allocated_height (GTK_WIDGET (image)))
+        gtk_widget_queue_resize (GTK_WIDGET (image));
+      else
+        gtk_widget_queue_draw (GTK_WIDGET (image));
+    }
+
   g_object_notify (G_OBJECT (image), "pixbuf");
   
   g_object_thaw_notify (G_OBJECT (image));
@@ -1164,7 +1188,7 @@ gtk_image_set_from_animation (GtkImage           *image,
   if (animation)
     g_object_ref (animation);
 
-  gtk_image_clear (image);
+  gtk_image_reset (image);
 
   if (animation != NULL)
     {
@@ -1172,6 +1196,18 @@ gtk_image_set_from_animation (GtkImage           *image,
       g_object_unref (animation);
     }
 
+  if (gtk_widget_get_visible (GTK_WIDGET (image)))
+    {
+      gint width, height;
+
+      gtk_image_get_preferred_size (image, &width, &height);
+      if (width != gtk_widget_get_allocated_width (GTK_WIDGET (image)) ||
+          height != gtk_widget_get_allocated_height (GTK_WIDGET (image)))
+        gtk_widget_queue_resize (GTK_WIDGET (image));
+      else
+        gtk_widget_queue_draw (GTK_WIDGET (image));
+    }
+
   g_object_notify (G_OBJECT (image), "pixbuf-animation");
   
   g_object_thaw_notify (G_OBJECT (image));
@@ -1202,7 +1238,8 @@ gtk_image_set_from_icon_name  (GtkImage       *image,
   g_object_freeze_notify (G_OBJECT (image));
 
   new_name = g_strdup (icon_name);
-  gtk_image_clear (image);
+
+  gtk_image_reset (image);
 
   if (new_name)
     {
@@ -1210,6 +1247,18 @@ gtk_image_set_from_icon_name  (GtkImage       *image,
       g_free (new_name);
     }
 
+  if (gtk_widget_get_visible (GTK_WIDGET (image)))
+    {
+      gint width, height;
+
+      gtk_image_get_preferred_size (image, &width, &height);
+      if (width != gtk_widget_get_allocated_width (GTK_WIDGET (image)) ||
+          height != gtk_widget_get_allocated_height (GTK_WIDGET (image)))
+        gtk_widget_queue_resize (GTK_WIDGET (image));
+      else
+        gtk_widget_queue_draw (GTK_WIDGET (image));
+    }
+
   g_object_notify (G_OBJECT (image), "icon-name");
   g_object_notify (G_OBJECT (image), "icon-size");
   
@@ -1242,7 +1291,7 @@ gtk_image_set_from_gicon  (GtkImage       *image,
   if (icon)
     g_object_ref (icon);
 
-  gtk_image_clear (image);
+  gtk_image_reset (image);
 
   if (icon)
     {
@@ -1250,6 +1299,18 @@ gtk_image_set_from_gicon  (GtkImage       *image,
       g_object_unref (icon);
     }
 
+  if (gtk_widget_get_visible (GTK_WIDGET (image)))
+    {
+      gint width, height;
+
+      gtk_image_get_preferred_size (image, &width, &height);
+      if (width != gtk_widget_get_allocated_width (GTK_WIDGET (image)) ||
+          height != gtk_widget_get_allocated_height (GTK_WIDGET (image)))
+        gtk_widget_queue_resize (GTK_WIDGET (image));
+      else
+        gtk_widget_queue_draw (GTK_WIDGET (image));
+    }
+
   g_object_notify (G_OBJECT (image), "gicon");
   g_object_notify (G_OBJECT (image), "icon-size");
   
@@ -1280,7 +1341,7 @@ gtk_image_set_from_surface (GtkImage       *image,
   if (surface)
     cairo_surface_reference (surface);
 
-  gtk_image_clear (image);
+  gtk_image_reset (image);
 
   if (surface)
     {
@@ -1288,6 +1349,18 @@ gtk_image_set_from_surface (GtkImage       *image,
       cairo_surface_destroy (surface);
     }
 
+  if (gtk_widget_get_visible (GTK_WIDGET (image)))
+    {
+      gint width, height;
+
+      gtk_image_get_preferred_size (image, &width, &height);
+      if (width != gtk_widget_get_allocated_width (GTK_WIDGET (image)) ||
+          height != gtk_widget_get_allocated_height (GTK_WIDGET (image)))
+        gtk_widget_queue_resize (GTK_WIDGET (image));
+      else
+        gtk_widget_queue_draw (GTK_WIDGET (image));
+    }
+
   g_object_notify (G_OBJECT (image), "surface");
   
   g_object_thaw_notify (G_OBJECT (image));