[nautilus] canvas-item: don't use the root window to create drag surface

[Cosimo Cecchi <cosimoc src gnome org>]

commit 1019cdd0668a3fc67531187671ac39fce6b1f025
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Feb 20 22:54:27 2013 -0500

    canvas-item: don't use the root window to create drag surface
    
    There's no reason to.

 libnautilus-private/nautilus-canvas-item.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/libnautilus-private/nautilus-canvas-item.c b/libnautilus-private/nautilus-canvas-item.c
index 0f4a312..9747349 100644
--- a/libnautilus-private/nautilus-canvas-item.c
+++ b/libnautilus-private/nautilus-canvas-item.c
@@ -433,7 +433,6 @@ nautilus_canvas_item_get_drag_surface (NautilusCanvasItem *item)
 {
        cairo_surface_t *surface;
        EelCanvas *canvas;
-       GdkScreen *screen;
        int width, height;
        int item_offset_x, item_offset_y;
        EelIRect icon_rect;
@@ -444,7 +443,6 @@ nautilus_canvas_item_get_drag_surface (NautilusCanvasItem *item)
        g_return_val_if_fail (NAUTILUS_IS_CANVAS_ITEM (item), NULL);
 
        canvas = EEL_CANVAS_ITEM (item)->canvas;
-       screen = gtk_widget_get_screen (GTK_WIDGET (canvas));
        context = gtk_widget_get_style_context (GTK_WIDGET (canvas));
 
        gtk_style_context_save (context);
@@ -465,9 +463,8 @@ nautilus_canvas_item_get_drag_surface (NautilusCanvasItem *item)
        width = EEL_CANVAS_ITEM (item)->x2 - EEL_CANVAS_ITEM (item)->x1;
        height = EEL_CANVAS_ITEM (item)->y2 - EEL_CANVAS_ITEM (item)->y1;
 
-        surface = gdk_window_create_similar_surface (gdk_screen_get_root_window (screen),
-                                                     CAIRO_CONTENT_COLOR_ALPHA,
-                                                     width, height);
+        surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+                                             width, height);
 
        cr = cairo_create (surface);