[eog/wip/baedert/gtkimageview: 58/75] Render the background correctly

[Timm Bäder <baedert src gnome org>]

commit 06ca7c499396576a911fededdbe44370eba0e432
Author: Timm Bäder <mail baedert org>
Date:   Thu Mar 17 12:02:00 2016 +0100

    Render the background correctly

 src/eog-scroll-view.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/src/eog-scroll-view.c b/src/eog-scroll-view.c
index 7f8c548..6f06ddc 100644
--- a/src/eog-scroll-view.c
+++ b/src/eog-scroll-view.c
@@ -1108,7 +1108,8 @@ display_draw (GtkWidget *widget, cairo_t *cr, gpointer data)
        EogScrollViewPrivate *priv;
        GtkAllocation allocation;
        int scaled_width, scaled_height;
-       int xofs = 0, yofs = 0;
+       double scale;
+       int xofs, yofs;
 
        g_return_val_if_fail (EOG_IS_SCROLL_VIEW (data), FALSE);
 
@@ -1119,8 +1120,17 @@ display_draw (GtkWidget *widget, cairo_t *cr, gpointer data)
        if (priv->image == NULL)
                return TRUE;
 
-       /* Paint the background */
+
+       scale = gtk_image_view_get_scale (GTK_IMAGE_VIEW (priv->display));
+       scaled_width = (int)(scale * gtk_abstract_image_get_width (GTK_ABSTRACT_IMAGE (priv->image)));
+       scaled_height = (int)(scale * gtk_abstract_image_get_height (GTK_ABSTRACT_IMAGE (priv->image)));
+
        gtk_widget_get_allocation (priv->display, &allocation);
+
+       xofs = (allocation.width / 2)  - (scaled_width / 2);
+       yofs = (allocation.height / 2) - (scaled_height / 2);
+
+       /* Paint the background */
        cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
        if (priv->transp_style != EOG_TRANSP_BACKGROUND)
                cairo_rectangle (cr, MAX (0, xofs), MAX (0, yofs),