NSGLView: default to hidden, add API to un/hide

2 files changed, 31 insertions, 0 deletions

diff --git a/libs/gtkmm2ext/gtkmm2ext/nsglview.h b/libs/gtkmm2ext/gtkmm2ext/nsglview.h
index 8a175f3322..5b579f1a47 100644
--- a/libs/gtkmm2ext/gtkmm2ext/nsglview.h
+++ b/libs/gtkmm2ext/gtkmm2ext/nsglview.h
@@ -1,3 +1,21 @@
+/*
+ * Copyright (C) 2017 Robin Gareus <robin@gareus.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
 #ifndef __CANVAS_NSGLVIEW_H__
 #define __CANVAS_NSGLVIEW_H__
 
@@ -11,5 +29,6 @@ namespace Gtkmm2ext
 	void  nsglview_overlay (void*, GdkWindow*);
 	void  nsglview_resize (void*, int x, int y, int w, int h);
 	void  nsglview_queue_draw (void*, int x, int y, int w, int h);
+	void  nsglview_set_visible (void*, bool);
 }
 #endif
diff --git a/libs/gtkmm2ext/nsglview.mm b/libs/gtkmm2ext/nsglview.mm
index a9842935e7..9f6ae629a1 100644
--- a/libs/gtkmm2ext/nsglview.mm
+++ b/libs/gtkmm2ext/nsglview.mm
@@ -258,6 +258,7 @@ Gtkmm2ext::nsglview_create (Gtkmm2ext::CairoCanvas* canvas)
 		return 0;
 	}
 	[gl_view setCairoCanvas:canvas];
+	[gl_view setHidden:YES];
 	return gl_view;
 }
 
@@ -282,3 +283,14 @@ Gtkmm2ext::nsglview_queue_draw (void* glv, int x, int y, int w, int h)
 	ArdourCanvasOpenGLView* gl_view = (ArdourCanvasOpenGLView*) glv;
 	[gl_view setNeedsDisplayInRect:NSMakeRect(x, y, w, h)];
 }
+
+void
+Gtkmm2ext::nsglview_set_visible (void* glv, bool vis)
+{
+	ArdourCanvasOpenGLView* gl_view = (ArdourCanvasOpenGLView*) glv;
+	if (vis) {
+		[gl_view setHidden:NO];
+	} else {
+		[gl_view setHidden:YES];
+	}
+}