[gthumb] dragger: make sure the widget is redrawn after changing the image

[Paolo Bacchilega <paobac src gnome org>]

commit fb3446e5e93d2ca6bc6c6778f1236d04f9b8a503
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Nov 3 18:28:13 2013 +0100

    dragger: make sure the widget is redrawn after changing the image

 gthumb/gth-image-dragger.c |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)
---
diff --git a/gthumb/gth-image-dragger.c b/gthumb/gth-image-dragger.c
index a457901..649b1dd 100644
--- a/gthumb/gth-image-dragger.c
+++ b/gthumb/gth-image-dragger.c
@@ -495,15 +495,21 @@ _gth_image_dragger_update_scaled_image (GthImageDragger *self)
        if (self->priv->viewer == NULL)
                return;
 
-       if (gth_image_viewer_is_animation (self->priv->viewer))
+       if (gth_image_viewer_is_animation (self->priv->viewer)) {
+               gtk_widget_queue_draw (GTK_WIDGET (self->priv->viewer));
                return;
+       }
 
        image = gth_image_viewer_get_current_image (self->priv->viewer);
-       if ((image == NULL) || (cairo_surface_status (image) != CAIRO_STATUS_SUCCESS))
+       if ((image == NULL) || (cairo_surface_status (image) != CAIRO_STATUS_SUCCESS)) {
+               gtk_widget_queue_draw (GTK_WIDGET (self->priv->viewer));
                return;
+       }
 
-       if (gth_image_viewer_get_zoom_quality (self->priv->viewer) == GTH_ZOOM_QUALITY_LOW)
+       if (gth_image_viewer_get_zoom_quality (self->priv->viewer) == GTH_ZOOM_QUALITY_LOW) {
+               gtk_widget_queue_draw (GTK_WIDGET (self->priv->viewer));
                return;
+       }
 
        zoom_from_original = gth_image_viewer_get_zoom (self->priv->viewer);
        gth_image_viewer_get_original_size (self->priv->viewer, &original_width, &original_height);
@@ -513,8 +519,10 @@ _gth_image_dragger_update_scaled_image (GthImageDragger *self)
        image_height = cairo_image_surface_get_height (image);
        zoom_from_image = (double) new_width / image_width;
 
-       if (zoom_from_image >= 1.0)
+       if (zoom_from_image >= 1.0) {
+               gtk_widget_queue_draw (GTK_WIDGET (self->priv->viewer));
                return;
+       }
 
        if (image_width * image_height <= SIZE_TOO_BIG_FOR_SCALE_BILINEAR) {
                self->priv->scaled = _cairo_image_surface_scale_bilinear (image, new_width, new_height);