[gnome-desktop] gnome-bg: Handle EXIF orientations

[Bastien Nocera <hadess src gnome org>]

commit d4fa2488aecfe0bedc5c495333ac82fbee8c8e45
Author: Silvère Latchurié <slatchurie gmail com>
Date:   Tue May 30 18:18:33 2017 +0200

    gnome-bg: Handle EXIF orientations
    
    Apply the orientation of the images provided as metadata in the EXIF
    tags when loading images for display as background images (such as
    in gnome-control-center's Background panel).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=516177

 libgnome-desktop/gnome-bg.c |   21 +++++++++++++++++++--
 1 files changed, 19 insertions(+), 2 deletions(-)
---
diff --git a/libgnome-desktop/gnome-bg.c b/libgnome-desktop/gnome-bg.c
index 749ff6a..82b2785 100644
--- a/libgnome-desktop/gnome-bg.c
+++ b/libgnome-desktop/gnome-bg.c
@@ -910,6 +910,14 @@ draw_once (GnomeBG   *bg,
 
        pixbuf = get_pixbuf_for_size (bg, num_monitor, rect.width, rect.height);
        if (pixbuf) {
+               GdkPixbuf *rotated;
+
+               rotated = gdk_pixbuf_apply_embedded_orientation (pixbuf);
+               if (rotated != NULL) {
+                       g_object_unref (pixbuf);
+                       pixbuf = rotated;
+               }
+
                draw_image_area (bg,
                                 num_monitor,
                                 pixbuf,
@@ -2554,8 +2562,17 @@ create_thumbnail_for_filename (GnomeDesktopThumbnailFactory *factory,
        else {
                orig = gdk_pixbuf_new_from_file (filename, NULL);
                if (orig) {
-                       int orig_width = gdk_pixbuf_get_width (orig);
-                       int orig_height = gdk_pixbuf_get_height (orig);
+                       int orig_width, orig_height;
+                       GdkPixbuf *rotated;
+
+                       rotated = gdk_pixbuf_apply_embedded_orientation (orig);
+                       if (rotated != NULL) {
+                               g_object_unref (orig);
+                               orig = rotated;
+                       }
+
+                       orig_width = gdk_pixbuf_get_width (orig);
+                       orig_height = gdk_pixbuf_get_height (orig);
                        
                        result = pixbuf_scale_to_fit (orig, THUMBNAIL_SIZE, THUMBNAIL_SIZE);