--- /dev/null
+/*
+ Copyright (C) 2011-2013 Paul Davis
+ Author: Carl Hetherington <cth@carlh.net>
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __CANVAS_WIDGET_H__
+#define __CANVAS_WIDGET_H__
+
+#include "canvas/visibility.h"
+#include "canvas/item.h"
+
+#include "gtkmm2ext/cairo_widget.h"
+
+namespace ArdourCanvas
+{
+
+class LIBCANVAS_API Widget : virtual public Item
+{
+public:
+ Widget (Group *, CairoWidget&);
+
+ void render (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
+ void compute_bounding_box () const;
+
+ CairoWidget const & get () const {
+ return _widget;
+ }
+
+private:
+ CairoWidget& _widget;
+ bool event_proxy (GdkEvent*);
+};
+
+}
+
+#endif
--- /dev/null
+/*
+ Copyright (C) 2014 Paul Davis
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <iostream>
+#include <cairomm/context.h>
+#include "pbd/stacktrace.h"
+#include "pbd/compose.h"
+
+#include "canvas/canvas.h"
+#include "canvas/widget.h"
+#include "canvas/debug.h"
+#include "canvas/utils.h"
+
+using namespace std;
+using namespace ArdourCanvas;
+
+Widget::Widget (Group* parent, CairoWidget& w)
+ : Item (parent)
+ , _widget (w)
+{
+ Event.connect (sigc::mem_fun (*this, &Widget::event_proxy));
+}
+
+bool
+Widget::event_proxy (GdkEvent* ev)
+{
+ return _widget.event (ev);
+}
+
+void
+Widget::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
+{
+ std::cerr << "Render widget\n";
+
+ if (!_bounding_box) {
+ std::cerr << "no bbox\n";
+ return;
+ }
+
+ Rect self = item_to_window (_bounding_box.get());
+ boost::optional<Rect> r = self.intersection (area);
+
+ if (!r) {
+ std::cerr << "no intersection\n";
+ return;
+ }
+
+ Rect draw = r.get ();
+ cairo_rectangle_t crect;
+ crect.x = draw.x0;
+ crect.y = draw.y0;
+ crect.height = draw.height();
+ crect.width = draw.width();
+
+ std::cerr << "will draw " << draw << "\n";
+ context->save ();
+ context->translate (-draw.x0, -draw.y0);
+ //context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
+ // context->clip ();
+
+ _widget.render (context->cobj(), &crect);
+
+ context->restore ();
+}
+
+void
+Widget::compute_bounding_box () const
+{
+ std::cerr << "cbbox for widget\n";
+
+ GtkRequisition req;
+ Gtk::Allocation alloc;
+
+ _widget.size_request (req);
+
+ std::cerr << "widget wants " << req.width << " x " << req.height << "\n";
+
+ _bounding_box = Rect (0, 0, req.width, req.height);
+
+ /* make sure the widget knows that it got what it asked for */
+ alloc.set_x (0);
+ alloc.set_y (0);
+ alloc.set_width (req.width);
+ alloc.set_height (req.height);
+
+ _widget.size_allocate (alloc);
+
+ _bounding_box_dirty = false;
+}
+