From 210702481b234b7b1404cd8aa110e3be556c9f0a Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Mon, 19 Nov 2018 11:32:11 -0500
Subject: [PATCH] add required virtual method to Push2Canvas

---
 libs/surfaces/push2/canvas.cc | 10 ++++++++++
 libs/surfaces/push2/canvas.h  |  1 +
 2 files changed, 11 insertions(+)

diff --git a/libs/surfaces/push2/canvas.cc b/libs/surfaces/push2/canvas.cc
index b05888e701..40c4f4bd63 100644
--- a/libs/surfaces/push2/canvas.cc
+++ b/libs/surfaces/push2/canvas.cc
@@ -69,9 +69,19 @@ Push2Canvas::~Push2Canvas ()
 	device_sample_buffer = 0;
 }
 
+void
+Push2Canvas::queue_resize ()
+{
+	/* nothing to do here, for now */
+}
+
 bool
 Push2Canvas::vblank ()
 {
+	if (_root.resize_queued()) {
+		_root.layout ();
+	}
+
 	/* re-render dirty areas, if any */
 
 	if (expose ()) {
diff --git a/libs/surfaces/push2/canvas.h b/libs/surfaces/push2/canvas.h
index 3894a6a314..a1046128b0 100644
--- a/libs/surfaces/push2/canvas.h
+++ b/libs/surfaces/push2/canvas.h
@@ -48,6 +48,7 @@ class Push2Canvas : public ArdourCanvas::Canvas
 
 	void request_redraw ();
 	void request_redraw (ArdourCanvas::Rect const &);
+	void queue_resize ();
 	bool vblank ();
 
 	Cairo::RefPtr<Cairo::Context> image_context() { return context; }