MIDI transform dialog.

1 files changed, 140 insertions, 0 deletions

diff --git a/gtk2_ardour/transform_dialog.h b/gtk2_ardour/transform_dialog.h
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+++ b/gtk2_ardour/transform_dialog.h
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+/*
+   Copyright (C) 2009-2014 Paul Davis
+   Author: David Robillard
+
+   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 __transform_dialog_h__
+#define __transform_dialog_h__
+
+#include <list>
+#include <string>
+
+#include <gtkmm/combobox.h>
+#include <gtkmm/liststore.h>
+#include <gtkmm/treemodel.h>
+#include <gtkmm/spinbutton.h>
+
+#include "ardour/midi_model.h"
+#include "ardour/transform.h"
+#include "ardour/types.h"
+#include "evoral/types.hpp"
+
+#include "ardour_dialog.h"
+
+/** Dialog for building a MIDI note transformation.
+ *
+ * This can build transformations with any number of operations, but is limited
+ * in power and can't build arbitrary transformations since there is no way to do
+ * conceptually parenthetical things (i.e. push things to the stack).
+ *
+ * With this, it is possible to build transformations that process a single
+ * value in a series of steps starting with a seed, like: "value = seed OP
+ * value OP value ..." where OP is +, -, *, or /, left associative with no
+ * precedence.  This is simple and pretty clear to the user what's going to
+ * happen, though a bit limited.  It would be nice if the GUI could build
+ * fancier transformations, but it's not obvious how to do this without making
+ * things more confusing.
+ */
+class TransformDialog : public ArdourDialog
+{
+public:
+	TransformDialog();
+
+	ARDOUR::Transform::Program get();
+
+private:
+	typedef ARDOUR::MidiModel::NoteDiffCommand::Property Property;
+	typedef ARDOUR::Transform::Value                     Value;
+	typedef ARDOUR::Transform::Value::Source             Source;
+	typedef ARDOUR::Transform::Operation::Operator       Operator;
+	typedef ARDOUR::Transform::Operation                 Operation;
+
+	struct SourceCols : public Gtk::TreeModelColumnRecord {
+		SourceCols() { add(source); add(label); }
+
+		Gtk::TreeModelColumn<Source>      source;
+		Gtk::TreeModelColumn<std::string> label;
+	};
+
+	struct PropertyCols : public Gtk::TreeModelColumnRecord {
+		PropertyCols() { add(property); add(label); }
+
+		Gtk::TreeModelColumn<Property>    property;
+		Gtk::TreeModelColumn<std::string> label;
+	};
+
+	struct OperatorCols : public Gtk::TreeModelColumnRecord {
+		OperatorCols() { add(op); add(label); }
+
+		Gtk::TreeModelColumn<Operator>    op;
+		Gtk::TreeModelColumn<std::string> label;
+	};
+
+	struct Model {
+		Model();
+
+		SourceCols                   source_cols;
+		Glib::RefPtr<Gtk::ListStore> source_list;
+		PropertyCols                 property_cols;
+		Glib::RefPtr<Gtk::ListStore> property_list;
+		OperatorCols                 operator_cols;
+		Glib::RefPtr<Gtk::ListStore> operator_list;
+	};
+
+	struct ValueChooser : public Gtk::HBox {
+		ValueChooser(const Model& model);
+
+		/** Append code to `ops` that pushes value to stack. */
+		void get(std::list<Operation>& ops);
+
+		void set_target_property(Property prop);
+		void source_changed();
+
+		const Model&    model;            ///< Models for combo boxes
+		Property        target_property;  ///< Property on source
+		Gtk::ComboBox   source_combo;     ///< Value source chooser
+		Gtk::ComboBox   property_combo;   ///< Property chooser
+		Gtk::SpinButton value_spinner;    ///< Value or minimum for RANDOM
+		Gtk::Label      to_label;         ///< "to" label for RANDOM
+		Gtk::SpinButton max_spinner;      ///< Maximum for RANDOM
+	};
+
+	struct OperationChooser : public Gtk::HBox {
+		OperationChooser(const Model& model);
+
+		/** Append operations to `ops`. */
+		void get(std::list<Operation>& ops);
+
+		void remove_clicked();
+
+		const Model&  model;
+		Gtk::ComboBox operator_combo;
+		ValueChooser  value_chooser;
+		Gtk::Button   remove_button;
+	};
+
+	void property_changed();
+	void add_clicked();
+
+	Model         _model;
+	Gtk::ComboBox _property_combo;
+	ValueChooser* _seed_chooser;
+	Gtk::VBox     _operations_box;
+	Gtk::Button   _add_button;
+};
+
+#endif /* __transform_dialog_h__ */