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/* -*- Mode: c++ -*- */
/***************************************************************************
* labeledcontrol.h
*
* Fri Jun 8 11:56:50 CEST 2018
* Copyright 2018 André Nusser
* andre.nusser@googlemail.com
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include "label.h"
#include "widget.h"
#include <iomanip>
#include <sstream>
#include <functional>
namespace GUI
{
class LabeledControl
: public Widget
{
public:
using ValueTransformationFunction =
std::function<std::string(float, float, float)>;
LabeledControl(Widget* parent, const std::string& name)
: Widget(parent)
{
layout.setResizeChildren(false);
layout.setHAlignment(HAlignment::center);
layout.setSpacing(2);
caption.setText(name);
caption.resize(100, 20);
caption.setAlignment(TextAlignment::center);
layout.addItem(&caption);
}
void setControl(Knob* control)
{
layout.addItem(control);
CONNECT(control, valueChangedNotifier, this, &LabeledControl::setValue);
setValue(control->value());
value.resize(100, 20);
value.setAlignment(TextAlignment::center);
layout.addItem(&value);
}
void setValueTransformationFunction(ValueTransformationFunction function)
{
value_transformation_func = function;
}
float offset{0.0f};
float scale{1.0f};
private:
VBoxLayout layout{this};
Label caption{this};
Label value{this};
ValueTransformationFunction value_transformation_func;
void setValue(float new_value)
{
if(value_transformation_func)
{
value.setText(value_transformation_func(new_value, scale, offset));
return;
}
//TODO: Surely this could be the "default transformation function"?
new_value *= scale;
new_value += offset;
std::stringstream stream;
stream << std::fixed << std::setprecision(2) << new_value;
value.setText(stream.str());
}
};
}
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