[gthumb] always use CAIRO_FILTER_FAST for painting the surface

[Paolo Bacchilega <paobac src gnome org>]

commit b3783b6e8f200e409154d1d5e4b8c276bfe16946
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Dec 8 19:48:58 2014 +0100

    always use CAIRO_FILTER_FAST for painting the surface
    
    the high quality scaling is not perfomed by cairo

 gthumb/gth-image-dragger.c |    4 ++--
 gthumb/gth-image-viewer.c  |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gthumb/gth-image-dragger.c b/gthumb/gth-image-dragger.c
index 58273c3..304d4dd 100644
--- a/gthumb/gth-image-dragger.c
+++ b/gthumb/gth-image-dragger.c
@@ -281,7 +281,7 @@ gth_image_dragger_draw (GthImageViewerTool *self,
                                               viewer->image_area.x,
                                               viewer->image_area.y,
                                               &viewer->visible_area,
-                                              gth_image_viewer_get_zoom_quality_filter (viewer));
+                                              CAIRO_FILTER_FAST);
 
        gth_image_viewer_apply_painters (viewer, cr);
 }
@@ -506,7 +506,7 @@ _gth_image_dragger_update_scaled_image (GthImageDragger *self)
                return;
        }
 
-       if (gth_image_viewer_get_zoom_quality (self->priv->viewer) == GTH_ZOOM_QUALITY_LOW) {
+       if (gth_image_viewer_get_zoom_quality_filter (self->priv->viewer) == CAIRO_FILTER_FAST) {
                gtk_widget_queue_draw (GTK_WIDGET (self->priv->viewer));
                return;
        }
diff --git a/gthumb/gth-image-viewer.c b/gthumb/gth-image-viewer.c
index a72de02..8c5ebc5 100644
--- a/gthumb/gth-image-viewer.c
+++ b/gthumb/gth-image-viewer.c
@@ -2095,7 +2095,7 @@ gth_image_viewer_get_zoom_quality_filter (GthImageViewer *viewer)
        else
                filter = CAIRO_FILTER_BEST;
 
-       if (gth_image_viewer_get_zoom (viewer) == 1.0)
+       if (gth_image_viewer_get_zoom (viewer) >= 1.0)
                filter = CAIRO_FILTER_FAST;
 
        return filter;