[gthumb] do not load a better quality a new image has been requested

[Paolo Bacchilega <paobac src gnome org>]

commit 6a1393f3bbff1f0fab1a7d5e54275e4e686ec12e
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Sep 15 10:41:20 2013 +0200

    do not load a better quality a new image has been requested

 extensions/image_viewer/gth-image-viewer-page.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/extensions/image_viewer/gth-image-viewer-page.c b/extensions/image_viewer/gth-image-viewer-page.c
index 7d16fdf..31db8a8 100644
--- a/extensions/image_viewer/gth-image-viewer-page.c
+++ b/extensions/image_viewer/gth-image-viewer-page.c
@@ -51,6 +51,7 @@ struct _GthImageViewerPagePrivate {
        guint              hide_mouse_timeout;
        guint              motion_signal;
        gboolean           image_changed;
+       gboolean           loading_image;
        GFile             *last_loaded;
        gboolean           can_paste;
 };
@@ -296,7 +297,7 @@ update_image_quality_if_required (GthImageViewerPage *self)
 {
        double zoom;
 
-       if (self->priv->image_changed)
+       if (self->priv->image_changed || self->priv->loading_image)
                return;
 
        zoom = gth_image_viewer_get_zoom (GTH_IMAGE_VIEWER (self->priv->viewer));
@@ -902,6 +903,8 @@ preloader_load_ready_cb (GObject    *source_object,
        int                 original_height;
        GError             *error = NULL;
 
+       self->priv->loading_image = FALSE;
+
        if (! gth_image_preloader_load_finish (GTH_IMAGE_PRELOADER (source_object),
                                               result,
                                               &requested,
@@ -996,6 +999,7 @@ gth_image_viewer_page_real_view (GthViewerPage *base,
        _g_object_unref (self->priv->file_data);
        self->priv->file_data = gth_file_data_dup (file_data);
        self->priv->image_changed = FALSE;
+       self->priv->loading_image = TRUE;
 
        for (i = 0; i < N_PRELOADERS; i++) {
                next_file_data[i] = NULL;
@@ -1527,6 +1531,7 @@ gth_image_viewer_page_init (GthImageViewerPage *self)
        self->priv->history = gth_image_history_new ();
        self->priv->last_loaded = NULL;
        self->priv->image_changed = FALSE;
+       self->priv->loading_image = FALSE;
        self->priv->can_paste = FALSE;
        self->priv->viewer_merge_id = 0;
        self->priv->browser_merge_id = 0;