BSEQuencer-1.8.10/src/ScaleEditor.hpp

/* B.SEQuencer
 * MIDI Step Sequencer LV2 Plugin
 *
 * Copyright (C) 2018, 2019 by Sven Jähnichen
 *
 * 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 3, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef SCALEEDITOR_HPP_
#define SCALEEDITOR_HPP_

#include <utility>
#include "definitions.h"
#include "BScale.hpp"
#include "ScaleMap.hpp"
#include "BWidgets/Widget.hpp"
#include "BWidgets/ValueWidget.hpp"
#include "BWidgets/HPianoRoll.hpp"
#include "BWidgets/Label.hpp"
#include "BWidgets/PopupListBox.hpp"
#include "BWidgets/TextButton.hpp"
#include "BWidgets/ImageIcon.hpp"

#ifdef LOCALEFILE
#include LOCALEFILE
#else
#include "Locale_EN.hpp"
#endif

class ScaleEditor : public BWidgets::ValueWidget
{
public:
	ScaleEditor ();
	ScaleEditor (const double x, const double y, const double width, const double height,
		     const std::string& name, const std::string& pluginPath,
		     const int mapNr, const ScaleMap& scaleMap, const BScale& scale);

	virtual void resize (double width, double height) override;
	void setScaleMap (const ScaleMap& scaleMap);
	ScaleMap getScaleMap () const;
	void setScale (const BScale& scale);
	BScale getScale () const;
	void setMapNr (const int nr);
	int getMapNr () const;

protected:
	void szScaleEditor ();
	void updateAltSymbol (int nr);
	static void symbolDragCallback (BEvents::Event* event);
	static void symbolListboxValueChangedCallback (BEvents::Event* event);
	static void noteListboxValueChangedCallback (BEvents::Event* event);
	static void buttonClickCallback (BEvents::Event* event);
	static void labelClickCallback (BEvents::Event* event);
	static void labelMessageCallback (BEvents::Event* event);
	static void pianoClickCallback (BEvents::Event* event);

	BWidgets::Label nameLabel;
	BWidgets::Label scaleNameLabel;
	BWidgets::Label rowLabel;
	BWidgets::Label symbolLabel;
	BWidgets::Label noteLabel;
	BWidgets::Label altSymbolLabel;
	std::array<BWidgets::ImageIcon, ROWS> drumSymbol;
	std::array<BWidgets::ImageIcon, ROWS>noteSymbol;
	std::array<BWidgets::Label, ROWS> nrLabel;
	std::array<BWidgets::PopupListBox, ROWS> nrSymbolListbox;
	std::array<BWidgets::PopupListBox, ROWS> nrNoteListbox;
	std::array<BWidgets::Label, ROWS> nrNoteLabel;
	std::array<BWidgets::Label, ROWS> nrAltSymbolLabel;
	BWidgets::HPianoRoll piano;
	BWidgets::TextButton cancelButton;
	BWidgets::TextButton applyButton;

	int pianoRoot;
	BScale scale;
	ScaleMap scaleMap;
	int mapNr;

	double sz;

	cairo_surface_t* bgSurface;

	BColors::ColorSet txColors = {{{0.167, 0.37, 0.80, 1.0}, {0.33, 0.5, 0.85, 1.0}, {0.0, 0.0, 0.25, 1.0}, {0.0, 0.0, 0.0, 0.0}}};
	BColors::ColorSet bgColors = {{{0.15, 0.15, 0.15, 1.0}, {0.3, 0.3, 0.3, 1.0}, {0.05, 0.05, 0.05, 1.0}, {0.0, 0.0, 0.0, 1.0}}};
	BStyles::Border border = {{BColors::white, 1.0}, 0.0, 2.0, 0.0};
	BStyles::Border menuBorder = {{BColors::darkgrey, 1.0}, 0.0, 0.0, 0.0};
	BStyles::Border labelborder = {BStyles::noLine, 4.0, 0.0, 0.0};
	BStyles::Fill scaleEditorBg = BStyles::blackFill;
	BStyles::Fill menuBg = BStyles::Fill (BColors::Color (0.0, 0.0, 0.05, 1.0));
	BStyles::Font ctLabelFont = BStyles::Font ("Sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL, 12.0,
						   BStyles::TEXT_ALIGN_CENTER, BStyles::TEXT_VALIGN_MIDDLE);
	BStyles::Font lfLabelFont = BStyles::Font ("Sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL, 12.0,
						   BStyles::TEXT_ALIGN_LEFT, BStyles::TEXT_VALIGN_MIDDLE);
	BStyles::StyleSet defaultStyles = {"default", {{"background", STYLEPTR (&BStyles::noFill)},
					  {"border", STYLEPTR (&BStyles::noBorder)}}};
	BStyles::StyleSet labelStyles = {"labels", {{"background", STYLEPTR (&BStyles::noFill)},
						   {"border", STYLEPTR (&BStyles::noBorder)},
						   {"textcolors", STYLEPTR (&txColors)},
						   {"font", STYLEPTR (&ctLabelFont)}}};

	BStyles::Theme theme = BStyles::Theme ({
		defaultStyles,
		{"scaleeditor", 	{{"background", STYLEPTR (&scaleEditorBg)},
					{"border", STYLEPTR (&border)}}},
		{"widget", 		{{"uses", STYLEPTR (&defaultStyles)}}},
		{"ctlabel",	 	{{"uses", STYLEPTR (&labelStyles)},
					 {"font", STYLEPTR (&ctLabelFont)}}},
		{"lflabel",	 	{{"uses", STYLEPTR (&labelStyles)},
					 {"font", STYLEPTR (&lfLabelFont)}}},
		{"button", 		{{"font", STYLEPTR (&ctLabelFont)}}},
		{"xsymbol",	 	{{"uses", STYLEPTR (&defaultStyles)},
					 {"fgcolors", STYLEPTR (&BColors::whites)},
					 {"font", STYLEPTR (&ctLabelFont)}}},
		{"menu",	 	{{"border", STYLEPTR (&menuBorder)},
					 {"background", STYLEPTR (&menuBg)}}},
		{"menu/item",	 	{{"uses", STYLEPTR (&defaultStyles)},
					 {"border", STYLEPTR (&labelborder)},
					 {"textcolors", STYLEPTR (&BColors::whites)},
					 {"font", STYLEPTR (&lfLabelFont)}}},
		{"menu/button",	 	{{"border", STYLEPTR (&menuBorder)},
					 {"background", STYLEPTR (&menuBg)},
					 {"bgcolors", STYLEPTR (&bgColors)}}},
		{"menu/listbox",	{{"border", STYLEPTR (&menuBorder)},
					 {"background", STYLEPTR (&menuBg)}}},
		{"menu/listbox/item",	{{"uses", STYLEPTR (&defaultStyles)},
					 {"border", STYLEPTR (&labelborder)},
					 {"textcolors", STYLEPTR (&BColors::whites)},
					 {"font", STYLEPTR (&lfLabelFont)}}},
		{"menu/listbox//button",{{"border", STYLEPTR (&menuBorder)},
					 {"background", STYLEPTR (&menuBg)},
					 {"bgcolors", STYLEPTR (&bgColors)}}}
	});

};

ScaleEditor::ScaleEditor() : ScaleEditor (0, 0, 0, 0, "editor", "", 0, ScaleMap (), BScale (0, defaultScale)) {}

ScaleEditor::ScaleEditor(const double x, const double y, const double width, const double height, const std::string& name,
						 const std::string& pluginPath, const int mapNr, const ScaleMap& scaleMap, const BScale& scale) :
		BWidgets::ValueWidget (x, y, width, height, name, 0.0),
		nameLabel (20, 60, 80, 20, "lflabel", BSEQUENCER_LABEL_SCALE_NAME ":"),
		scaleNameLabel (120, 60, 320, 20, "lflabel", scaleMap.name),
		rowLabel (20, 100, 80, 20, "lflabel", BSEQUENCER_LABEL_ROW),
		symbolLabel (70, 100, 48, 20, "ctlabel", BSEQUENCER_LABEL_MODE),
		noteLabel (148, 100, 80, 20, "ctlabel", BSEQUENCER_LABEL_NOTE),
		altSymbolLabel (248, 100, 80, 20, "ctlabel", BSEQUENCER_LABEL_SYMBOL),
		piano (50, 620, 260, 60, "widget", 0, 35),
		cancelButton (60, 720, 60, 20, "button", BSEQUENCER_LABEL_CANCEL),
		applyButton (240, 720, 60, 20, "button", BSEQUENCER_LABEL_APPLY),
		pianoRoot (0), scale (scale), scaleMap (scaleMap), mapNr (mapNr),
		sz (width / 360 < height / 760 ? width / 360 : height / 760)


{
	setDraggable (true);
	setFocusable (true);	// Only to block underlying pads callback
	setStacking (BWidgets::STACKING_CATCH);

	bgSurface = cairo_image_surface_create_from_png ((pluginPath + "ScaleEditor.png").c_str());
	scaleEditorBg.loadFillFromCairoSurface(bgSurface);

	scaleNameLabel.setEditable (true);
	scaleNameLabel.setCallbackFunction(BEvents::BUTTON_PRESS_EVENT, labelClickCallback);
	scaleNameLabel.setCallbackFunction(BEvents::MESSAGE_EVENT, labelMessageCallback);

	// Create note symbols (for nrListbox)
	BScale sc = BScale(0, {CROMATICSCALE});
	std::list<BItems::Item> noteNameItems;
	for (int i = 0; i < 120; ++i)
	{
		int octave = (i / 12) - 1;
		std::string strNote = std::to_string(i) + " (" + sc.getSymbol (i) + (octave != 0 ? std::to_string(octave) : "") + ")";
		noteNameItems.push_back (BItems::Item (i, strNote));
	}

	// Init nr widgets
	for (int i = 0; i < ROWS; ++i)
	{

		drumSymbol[i] = BWidgets::ImageIcon (0, 0, 48, 24, "widget", pluginPath + "DrumSymbol.png");
		drumSymbol[i].rename ("widget");
		drumSymbol[i].applyTheme (theme);
		noteSymbol[i] = BWidgets::ImageIcon (0, 0, 48, 24, "widget", pluginPath + "NoteSymbol.png");
		noteSymbol[i].rename ("widget");
		noteSymbol[i].applyTheme (theme);

		BItems::ItemList il;
		il.push_back (BItems::Item (0, &noteSymbol[i]));
		il.push_back (BItems::Item (1, &drumSymbol[i]));

		nrSymbolListbox[i] =  BWidgets::PopupListBox (60, 580 - i * 30, 68, 24, 68, 68, "menu", il, 0);
		nrSymbolListbox[i].setCallbackFunction(BEvents::VALUE_CHANGED_EVENT, symbolListboxValueChangedCallback);
		nrSymbolListbox[i].rename ("menu");
		nrSymbolListbox[i].applyTheme (theme);
		add (nrSymbolListbox[i]);

		nrLabel[i] = BWidgets::Label (20, 580 - i * 30, 30, 24, "lflabel", std::to_string (i + 1));
		nrLabel[i].rename ("lflabel");
		nrLabel[i].applyTheme (theme);
		add (nrLabel[i]);

		if (i >= 6) nrNoteListbox[i] = BWidgets::PopupListBox (148, 580 - i * 30, 80, 24, 80, 240, "menu", noteNameItems, 0);
		else nrNoteListbox[i] = BWidgets::PopupListBox (148, 580 - i * 30, 80, 24, 0, -240, 80, 240, "menu", noteNameItems, 0);
		nrNoteListbox[i].setCallbackFunction(BEvents::VALUE_CHANGED_EVENT, noteListboxValueChangedCallback);
		nrNoteListbox[i].rename ("menu");
		nrNoteListbox[i].applyTheme (theme);
		add (nrNoteListbox[i]);

		nrNoteLabel[i] = BWidgets::Label (148, 580 - i * 30, 80, 24, "ctlabel", "(" BSEQUENCER_LABEL_USES_SCALE ")");
		nrNoteLabel[i].rename ("ctlabel");
		nrNoteLabel[i].applyTheme (theme);
		add (nrNoteLabel[i]);
		nrNoteLabel[i].hide ();

		nrAltSymbolLabel[i] = BWidgets::Label (248, 580 - i * 30, 80, 24, "ctlabel", "");
		nrAltSymbolLabel[i].rename ("ctlabel");
		nrAltSymbolLabel[i].setEditable (true);
		nrAltSymbolLabel[i].setCallbackFunction(BEvents::BUTTON_PRESS_EVENT, labelClickCallback);
		nrAltSymbolLabel[i].setCallbackFunction(BEvents::MESSAGE_EVENT, labelMessageCallback);
		updateAltSymbol (i);
		nrAltSymbolLabel[i].applyTheme (theme);
		add (nrAltSymbolLabel[i]);
	}

	cancelButton.setCallbackFunction(BEvents::BUTTON_CLICK_EVENT, buttonClickCallback);
	applyButton.setCallbackFunction(BEvents::BUTTON_CLICK_EVENT, buttonClickCallback);

	piano.setKeysToggleable (true);
	piano.setCallbackFunction(BEvents::BUTTON_PRESS_EVENT, pianoClickCallback);
	piano.setCallbackFunction(BEvents::BUTTON_RELEASE_EVENT, pianoClickCallback);
	piano.setCallbackFunction(BEvents::POINTER_DRAG_EVENT, pianoClickCallback);

	setScale (scale);
	setScaleMap (scaleMap);

	nameLabel.applyTheme (theme);
	scaleNameLabel.applyTheme (theme);
	rowLabel.applyTheme (theme);
	symbolLabel.applyTheme (theme);
	noteLabel.applyTheme (theme);
	altSymbolLabel.applyTheme (theme);
	cancelButton.applyTheme (theme);
	applyButton.applyTheme (theme);
	piano.applyTheme (theme);
	applyTheme (theme);

	add (nameLabel);
	add (scaleNameLabel);
	add (rowLabel);
	add (symbolLabel);
	add (noteLabel);
	add (altSymbolLabel);
	add (cancelButton);
	add (applyButton);
	add (piano);

	if (sz != 1.0) szScaleEditor();
}

void ScaleEditor::resize (double width, double height)
{
	double wf = width / 360;
	double hf = height / 760;
	double newsz = (wf < hf ? wf : hf);
	if (sz != newsz)
	{
		sz = newsz;
		szScaleEditor ();
	}
}

void ScaleEditor::szScaleEditor ()
{
	// Scale Fonts
	ctLabelFont.setFontSize (12 * sz);
	lfLabelFont.setFontSize (12 * sz);

	// Scale background
	cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 360 * sz, 760 * sz);
	cairo_t* cr = cairo_create (surface);
	cairo_scale (cr, sz, sz);
	cairo_set_source_surface(cr, bgSurface, 0, 0);
	cairo_paint(cr);
	scaleEditorBg.loadFillFromCairoSurface(surface);
	cairo_destroy (cr);
	cairo_surface_destroy (surface);

	nameLabel.moveTo (20 * sz, 60 * sz); nameLabel.resize (80 * sz, 20 * sz);
	scaleNameLabel.moveTo (120 * sz, 60 * sz); scaleNameLabel.resize(320 * sz, 20 * sz);
	rowLabel.moveTo (20 * sz, 100 * sz); rowLabel.resize (80 * sz, 20 * sz);
	symbolLabel.moveTo (70 * sz, 100 * sz); symbolLabel.resize (48 * sz, 20 * sz);
	noteLabel.moveTo (148 * sz, 100 * sz); noteLabel.resize (80 * sz, 20 * sz);
	altSymbolLabel.moveTo (248 * sz, 100 * sz); altSymbolLabel.resize (80 * sz, 20 * sz);
	cancelButton.moveTo (60 * sz, 720 * sz); cancelButton.resize (60 * sz, 20 * sz);
	applyButton.moveTo (240 * sz, 720 * sz); applyButton.resize (60 * sz, 20 * sz);
	piano.moveTo (50 * sz, 620 * sz); piano.resize (260 * sz, 60 * sz);

	for (int i = 0; i < ROWS; ++i)
	{
		nrLabel[i].moveTo (20 * sz, (580 - i * 30) * sz); nrLabel[i].resize (30 * sz, 24 * sz);
		nrSymbolListbox[i].moveTo (60 * sz, (580 - i * 30) * sz); nrSymbolListbox[i].resize (68 * sz, 24 * sz);
		nrSymbolListbox[i].resizeListBox (BUtilities::Point (68 * sz, 68 * sz));

		nrNoteListbox[i].moveTo (148 * sz, (580 - i * 30) * sz ); nrNoteListbox[i].resize (80 * sz, 24 * sz);
		nrNoteListbox[i].resizeListBox (BUtilities::Point (80 * sz, 240 * sz));
		if (i < 6) nrNoteListbox[i].moveListBox(BUtilities::Point (0, -240 * sz));
		nrNoteListbox[i].resizeListBoxItems (BUtilities::Point (80 * sz, 24 * sz));

		nrNoteLabel[i].moveTo (148 * sz, (580 - i * 30) * sz); nrNoteLabel[i].resize (80 * sz, 24 * sz);
		nrAltSymbolLabel[i].moveTo (248 * sz, (580 - i * 30) * sz); nrAltSymbolLabel[i].resize (80 * sz, 24 * sz);
	}

	nameLabel.applyTheme (theme);
	scaleNameLabel.applyTheme (theme);
	rowLabel.applyTheme (theme);
	symbolLabel.applyTheme (theme);
	noteLabel.applyTheme (theme);
	altSymbolLabel.applyTheme (theme);
	cancelButton.applyTheme (theme);
	applyButton.applyTheme (theme);
	piano.applyTheme (theme);

	for (int i = 0; i < ROWS; ++i)
	{
		nrLabel[i].applyTheme (theme);
		nrSymbolListbox[i].applyTheme (theme);
		nrNoteListbox[i].applyTheme (theme);
		nrNoteLabel[i].applyTheme (theme);
		nrAltSymbolLabel[i].applyTheme (theme);
	}

	applyTheme (theme);
	Widget::resize (360 * sz, 760 * sz);
}

void ScaleEditor::setScaleMap (const ScaleMap& scaleMap)
{
	this->scaleMap = scaleMap;

	scaleNameLabel.setText(scaleMap.name);

	// Set nr widgets
	for (int i = 0; i < ROWS; ++i)
	{
		if (scaleMap.elements[i] & 0x0100)
		{
			nrSymbolListbox[i].setValue (1);
			nrNoteLabel[i].hide ();
			nrNoteListbox[i].setValue (scaleMap.elements[i] & 0x0FF);
			nrNoteListbox[i].show ();
		}

		else
		{
			nrSymbolListbox[i].setValue (0);
			nrNoteListbox[i].hide ();
			nrNoteLabel[i].show ();
		}

		updateAltSymbol (i);
	}
}

ScaleMap ScaleEditor::getScaleMap () const {return scaleMap;}

void ScaleEditor::setScale (const BScale& scale)
{
	this->scale = scale;
	for (int i = 0; i < ROWS; ++i) updateAltSymbol (i);

	// Set piano
	int pianoRoot = this->scale.getRoot() % 12;
	if (pianoRoot < 6) pianoRoot +=12;
	std::vector<bool> acKeys;
	std::vector<bool> prKeys;

	for (int i = 0; i < 36; ++i)
	{
		if ((i >= pianoRoot) && (i < pianoRoot + 12)) acKeys.push_back (true);
		else acKeys.push_back (false);

		if (this->scale.getElement (i/* + this->scale.getRoot()*/) != ENOTE) prKeys.push_back (true);
		else prKeys.push_back (false);
	}

	piano.activateKeys (acKeys);
	piano.pressKeys (prKeys);
}

BScale ScaleEditor::getScale () const {return scale;}

void ScaleEditor::setMapNr (const int nr) {mapNr = nr;}

int ScaleEditor::getMapNr () const {return mapNr;}

void ScaleEditor::updateAltSymbol (int nr)
{
	std::string symbol;
	if (scaleMap.altSymbols[nr] != "") symbol = scaleMap.altSymbols[nr];
	else if (!(scaleMap.elements[nr] & 0x0100)) symbol = scale.getSymbol (scaleMap.elements[nr]);
	nrAltSymbolLabel[nr].setText (symbol);
}

void ScaleEditor::symbolListboxValueChangedCallback (BEvents::Event* event)
{
	if ((!event) || (!event->getWidget()) || (!event->getWidget()->getParent())) return;

	BWidgets::PopupListBox* listbox = (BWidgets::PopupListBox*)(event->getWidget());
	ScaleEditor* scaleEditor = (ScaleEditor*)(listbox->getParent());
	int nr = -1;
	int value = ((BEvents::ValueChangedEvent*)event)->getValue ();

	for (int i = 0; i < ROWS; ++i)
	{
		if (listbox == &(scaleEditor->nrSymbolListbox[i]))
		{
			nr = i;
			break;
		}
	}

	if (nr >= 0)
	{
		if (value)
		{
			scaleEditor->scaleMap.elements[nr] = ((int(scaleEditor->nrNoteListbox[nr].getValue())) | 0x0100);
			scaleEditor->nrNoteListbox[nr].show ();
			scaleEditor->nrNoteLabel[nr].hide ();
			BWidgets::Label* l = (BWidgets::Label*) scaleEditor->nrNoteListbox[nr].getItem()->getWidget ();
			if (l) scaleEditor->scaleMap.altSymbols[nr] = l->getText ();
			scaleEditor->updateAltSymbol (nr);
		}

		else
		{
			scaleEditor->scaleMap.elements[nr] = 0;		// Will be substituted by auto numbering later
			scaleEditor->nrNoteListbox[nr].hide ();
			scaleEditor->nrNoteLabel[nr].show ();
		}

		// Update auto numbering of scale map elements
		for (int i = 0, count = 0; i < ROWS; ++i)
		{
			if (!(scaleEditor->scaleMap.elements[i] & 0x0100))
			{
				scaleEditor->scaleMap.elements[i] = count;
				scaleEditor->scaleMap.altSymbols[i] = "";
				++count;
			}
			scaleEditor->updateAltSymbol (i);
		}
	}
}

void ScaleEditor::noteListboxValueChangedCallback (BEvents::Event* event)
{
	if ((!event) || (!event->getWidget()) || (!event->getWidget()->getParent())) return;

	BWidgets::PopupListBox* listbox = (BWidgets::PopupListBox*)(event->getWidget());
	ScaleEditor* scaleEditor = (ScaleEditor*)(listbox->getParent());
	int nr = -1;

	for (int i = 0; i < ROWS; ++i)
	{
		if (listbox == &(scaleEditor->nrNoteListbox[i]))
		{
			nr = i;
			break;
		}
	}

	if ((nr >=0 ) && (scaleEditor->scaleMap.elements[nr] & 0x0100))
	{
		scaleEditor->scaleMap.elements[nr] = (((int)(scaleEditor->nrNoteListbox[nr].getValue())) | 0x0100);
		BWidgets::Label* l = (BWidgets::Label*) scaleEditor->nrNoteListbox[nr].getItem()->getWidget ();
		if (l) scaleEditor->scaleMap.altSymbols[nr] = l->getText ();
		scaleEditor->updateAltSymbol (nr);
	}
}

void ScaleEditor::buttonClickCallback (BEvents::Event* event)
{
	if ((event) && (event->getEventType() == BEvents::BUTTON_CLICK_EVENT) && (event->getWidget()))
	{
		BWidgets::TextButton* button = (BWidgets::TextButton*) event->getWidget();
		if (button->getParent())
		{
			ScaleEditor* scaleEditor = (ScaleEditor*)(button->getParent());

			if (button == &(scaleEditor->cancelButton)) scaleEditor->setValue (-1.0);
			else if (button == &(scaleEditor->applyButton)) scaleEditor->setValue (1.0);
			scaleEditor->postCloseRequest ();
		}
	}
}

void ScaleEditor::labelClickCallback (BEvents::Event* event)
{
	if ((event) && (event->getEventType() == BEvents::BUTTON_PRESS_EVENT) && (event->getWidget()))
	{
		BWidgets::Label* label = (BWidgets::Label*) event->getWidget();
		if (label->getParent ())
		{
			ScaleEditor* scaleEditor = (ScaleEditor*)(label->getParent());

			// Switch off edit mode for all other editable labels
			if (label == &scaleEditor->scaleNameLabel)
			{
				for (BWidgets::Label& l : scaleEditor->nrAltSymbolLabel)
				{
					if (l.getEditMode ()) l.applyEdit ();
				}
			}

			else
			{
				if (scaleEditor->scaleNameLabel.getMainWindow ())
				{
					scaleEditor->scaleNameLabel.getMainWindow ()->getKeyGrabStack()->remove (&scaleEditor->scaleNameLabel);
				}
				scaleEditor->scaleNameLabel.setEditMode (false);
				for (BWidgets::Label& l : scaleEditor->nrAltSymbolLabel)
				{
					if ((label != &l) && l.getEditMode ()) l.applyEdit ();
				}
			}
		}
	}
}

void ScaleEditor::labelMessageCallback (BEvents::Event* event)
{
	if ((event) && (event->getEventType() == BEvents::MESSAGE_EVENT) && (event->getWidget()))
	{
		BEvents::MessageEvent* me = (BEvents::MessageEvent*) event;

		if (me->getName () == BWIDGETS_LABEL_TEXT_CHANGED_MESSAGE)
		{
			BWidgets::Label* label = (BWidgets::Label*) event->getWidget();
			if (label->getParent ())
			{
				ScaleEditor* scaleEditor = (ScaleEditor*)(label->getParent());

				if (label == &scaleEditor->scaleNameLabel) scaleEditor->scaleMap.name = scaleEditor->scaleNameLabel.getText ();

				else for (size_t i = 0; i < ROWS; ++i)
				{
					BWidgets::Label* l = &scaleEditor->nrAltSymbolLabel[i];
					if (label == l)
					{
						scaleEditor->scaleMap.altSymbols[i] = l->getText ();
						break;
					}
				}
			}
		}
	}
}

void ScaleEditor::pianoClickCallback (BEvents::Event* event)
{
	if ((event) && (event->getWidget()))
	{
		BWidgets::HPianoRoll* piano = (BWidgets::HPianoRoll*)(event->getWidget());
		if (piano->getParent())
		{
			ScaleEditor* scaleEditor = (ScaleEditor*)(piano->getParent());
			std::vector<bool> pressedKeys = piano->getPressedKeys();
			BScale* scale = &(scaleEditor->scale);
			int pianoRoot = scale->getRoot() % 12;
			if (pianoRoot < 6) pianoRoot +=12;

			// Build new BScale elementarray from piano
			BScaleNotes newScaleNotes;
			newScaleNotes.fill (ENOTE);
			for (int i = 0, count = 0; i < 12; ++i)
			{
				if (pressedKeys[i + pianoRoot])
				{
					newScaleNotes[count] = i;
					++count;
				}
			}

			// Something changed?
			if (newScaleNotes != scale->getScale())
			{
				scale->setScale (newScaleNotes);

				// Update auto numbering of scale map elements
				for (int i = 0, count = 0; i < ROWS; ++i)
				{
					if (!(scaleEditor->scaleMap.elements[i] & 0x0100))
					{
						scaleEditor->scaleMap.elements[i] = count;
						scaleEditor->scaleMap.altSymbols[i] = "";
						++count;
					}
					scaleEditor->updateAltSymbol (i);
				}
			}
		}
	}
}

#endif /* SCALEEDITOR_HPP_ */