[mutter] boxes: Crop rectangle converting to integer with grow strategy

[Marco Trevisan <marcotrevi src gnome org>]

commit 8b09542fd912b2d97ff9ad1d86ce6f576e67cb69
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Fri Mar 1 02:58:13 2019 +0100

    boxes: Crop rectangle converting to integer with grow strategy
    
    Reuse meta_rectangle_from_clutter_rect with growing strategy to properly cast
    the clutter floating rectangle to integer MetaRectangle.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/3

 src/core/boxes.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)
---
diff --git a/src/core/boxes.c b/src/core/boxes.c
index 7b693e1b1..4ab07d273 100644
--- a/src/core/boxes.c
+++ b/src/core/boxes.c
@@ -2191,10 +2191,13 @@ meta_rectangle_crop_and_scale (const MetaRectangle *rect,
                                int                  dst_height,
                                MetaRectangle       *dest)
 {
-  dest->x = floorf (rect->x * (src_rect->size.width / dst_width) +
-                    src_rect->origin.x);
-  dest->y = floorf (rect->y * (src_rect->size.height / dst_height) +
-                    src_rect->origin.y);
-  dest->width  = ceilf (rect->width * (src_rect->size.width / dst_width));
-  dest->height = ceilf (rect->height * (src_rect->size.height / dst_height));
+  ClutterRect tmp = CLUTTER_RECT_INIT (rect->x, rect->y,
+                                       rect->width, rect->height);
+
+  clutter_rect_scale (&tmp,
+                      src_rect->size.width / dst_width,
+                      src_rect->size.height / dst_height);
+  clutter_rect_offset (&tmp, src_rect->origin.x, src_rect->origin.y);
+
+  meta_rectangle_from_clutter_rect (&tmp, META_ROUNDING_STRATEGY_GROW, dest);
 }