From 60a0b8f6458b15fd6f1a282010ad8d1b2aabf86a Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 20 Mar 2017 16:31:42 +0100
Subject: Forward un/map events to NSGLView

---
 libs/canvas/canvas.cc       | 29 +++++++++++++++++++++++++++++
 libs/canvas/canvas/canvas.h |  6 ++++--
 2 files changed, 33 insertions(+), 2 deletions(-)

(limited to 'libs/canvas')

diff --git a/libs/canvas/canvas.cc b/libs/canvas/canvas.cc
index 6ad4200cc1..9e47792758 100644
--- a/libs/canvas/canvas.cc
+++ b/libs/canvas/canvas.cc
@@ -1111,6 +1111,35 @@ GtkCanvas::on_leave_notify_event (GdkEventCrossing* ev)
 	return true;
 }
 
+void
+GtkCanvas::on_map ()
+{
+	Gtk::EventBox::on_map();
+#ifdef __APPLE__
+	if (_nsglview) {
+		Gtkmm2ext::nsglview_set_visible (_nsglview, true);
+		Gtk::Allocation a = get_allocation();
+		gint xx, yy;
+		gtk_widget_translate_coordinates(
+				GTK_WIDGET(gobj()),
+				GTK_WIDGET(get_toplevel()->gobj()),
+				0, 0, &xx, &yy);
+		Gtkmm2ext::nsglview_resize (_nsglview, xx, yy, a.get_width(), a.get_height());
+	}
+#endif
+}
+
+void
+GtkCanvas::on_unmap ()
+{
+	Gtk::EventBox::on_unmap();
+#ifdef __APPLE__
+	if (_nsglview) {
+		Gtkmm2ext::nsglview_set_visible (_nsglview, false);
+	}
+#endif
+}
+
 /** Called to request a redraw of our canvas.
  *  @param area Area to redraw, in window coordinates.
  */
diff --git a/libs/canvas/canvas/canvas.h b/libs/canvas/canvas/canvas.h
index 3e554cacf2..60e75bf8bf 100644
--- a/libs/canvas/canvas/canvas.h
+++ b/libs/canvas/canvas/canvas.h
@@ -221,8 +221,10 @@ public:
 	bool on_button_press_event (GdkEventButton *);
 	bool on_button_release_event (GdkEventButton* event);
 	bool on_motion_notify_event (GdkEventMotion *);
-        bool on_enter_notify_event (GdkEventCrossing*);
-        bool on_leave_notify_event (GdkEventCrossing*);
+	bool on_enter_notify_event (GdkEventCrossing*);
+	bool on_leave_notify_event (GdkEventCrossing*);
+	void on_map();
+	void on_unmap();
 
 	void on_realize ();
 
-- 
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