1 files changed, 87 insertions, 0 deletions
diff --git a/libs/surfaces/maschine2/canvas.h b/libs/surfaces/maschine2/canvas.h
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+++ b/libs/surfaces/maschine2/canvas.h
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+/*
+ * Copyright (C) 2016 Paul Davis
+ * Copyright (C) 2016 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, 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 _ardour_maschine2_canvas_h_
+#define _ardour_maschine2_canvas_h_
+
+#include <cairomm/refptr.h>
+#include <glibmm/threads.h>
+
+#include "canvas/canvas.h"
+
+namespace Cairo {
+	class ImageSurface;
+	class Context;
+	class Region;
+}
+
+namespace ArdourSurface {
+
+class M2Device;
+class Maschine2;
+
+/* A canvas which renders to the Push2 display */
+
+class Maschine2Canvas : public ArdourCanvas::Canvas
+{
+  public:
+	Maschine2Canvas (Maschine2&, M2Device*);
+	~Maschine2Canvas();
+
+	void request_redraw ();
+	void request_redraw (ArdourCanvas::Rect const &);
+	bool vblank ();
+
+	Cairo::RefPtr<Cairo::Context> image_context() { return context; }
+
+	ArdourCanvas::Coord width() const { return _width; }
+	ArdourCanvas::Coord height() const { return _height; }
+
+	void request_size (ArdourCanvas::Duple);
+	ArdourCanvas::Rect visible_area () const;
+
+	/* API that does nothing since we have no input events */
+	void ungrab () {}
+	void grab (ArdourCanvas::Item*) {}
+	void focus (ArdourCanvas::Item*) {}
+	void unfocus (ArdourCanvas::Item*) {}
+	void re_enter() {}
+	void pick_current_item (int) {}
+	void pick_current_item (ArdourCanvas::Duple const &, int) {}
+	bool get_mouse_position (ArdourCanvas::Duple&) const { return false; }
+
+	Glib::RefPtr<Pango::Context> get_pango_context ();
+
+  private:
+	int _width;
+	int _height;
+
+	Cairo::RefPtr<Cairo::Context> context;
+	Cairo::RefPtr<Cairo::Region> expose_region;
+	Glib::RefPtr<Pango::Context> pango_context;
+
+	Maschine2& m2;
+	PBD::ScopedConnection vblank_connections;
+
+	bool expose ();
+};
+
+} /* namespace ArdourSurface */
+
+#endif