push2: first somewhat operational versions of menus

[ardour.git] / libs / surfaces / push2 / menu.h

diff --git a/libs/surfaces/push2/menu.h b/libs/surfaces/push2/menu.h
new file mode 100644 (file)
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+++ b/libs/surfaces/push2/menu.h
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+/*
+    Copyright (C) 2016 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.
+*/
+
+#ifndef __ardour_push2_menu_h__
+#define __ardour_push2_menu_h__
+
+#include <cairomm/context.h>
+#include <cairomm/surface.h>
+#include <pangomm/layout.h>
+
+#include "pbd/signals.h"
+
+namespace ArdourSurface {
+
+class Push2Menu {
+   public:
+       Push2Menu (Cairo::RefPtr<Cairo::Context>);
+
+       void redraw (Cairo::RefPtr<Cairo::Context>) const;
+       bool dirty () const { return _dirty; }
+
+       void fill_column (int col, std::vector<std::string>);
+       void set_active (int col, int index);
+       void step_active (int col, int dir);
+       int get_active (int col);
+
+       PBD::Signal0<void> ActiveChanged;
+       PBD::Signal0<void> Selected;
+
+   private:
+       struct Column {
+               std::vector<std::string> text;
+               Glib::RefPtr<Pango::Layout> layout;
+               int top;
+               int active;
+       };
+
+       Column  columns[8];
+
+       void scroll (int col, int dir);
+       void set_text (int col, int top);
+
+       int nrows;
+       double baseline;
+
+       mutable bool _dirty;
+};
+
+} // namespace
+
+#endif /* __ardour_push2_menu_h__ */