Always grow the stack in push_new_viewport()

We didn't grow the stack if the new vbox would be the same as the last
one (i.e. when the passed vbox == None).  Now we always grow the
stack.  The idea is that eventually we'll be able to automatically
restore the last viewport's transform on Drop.

1 files changed, 3 insertions, 3 deletions

diff --git a/rsvg_internals/src/drawing_ctx.rs b/rsvg_internals/src/drawing_ctx.rs
index 73bbb4b8..bd6cc3f3 100644
--- a/rsvg_internals/src/drawing_ctx.rs
+++ b/rsvg_internals/src/drawing_ctx.rs
@@ -380,10 +380,10 @@ impl DrawingCtx {
                     if let Some(ClipMode::ClipToVbox) = clip_mode {
                         clip_to_rectangle(&self.cr, &*vbox);
                     }
-                    self.push_view_box(vbox.width(), vbox.height())
-                } else {
-                    self.get_view_params()
                 }
+
+                let vbox = vbox.unwrap_or_else(|| self.get_top_viewbox());
+                self.push_view_box(vbox.width(), vbox.height())
             })
     }