OperationalDelegate.cpp

//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//

#include <QDoubleSpinBox>
#include <QModelIndex>

#include "OperationalDelegate.h"
#include "MainWindow.h"

OperationalDelegate::OperationalDelegate(QObject* parent) :
	QItemDelegate(parent)
{
}

OperationalDelegate::~OperationalDelegate()
{
}

QWidget*
OperationalDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
	QDoubleSpinBox* editor = new QDoubleSpinBox(parent);
	
	editor->setMaximum(std::numeric_limits<double>::max());
	editor->setMinimum(-std::numeric_limits<double>::max());
	
	switch (index.column())
	{
	case 0:
	case 1:
	case 2:
		editor->setSingleStep(0.01);
		break;
	case 3:
	case 4:
	case 5:
		editor->setSingleStep(1.0);
		break;
	default:
		break;
	}
	
	QObject::connect(editor, SIGNAL(valueChanged(double)), this, SLOT(valueChanged(double)));
	
	return editor;
}

void
OperationalDelegate::setEditorData(QWidget* editor, const QModelIndex& index) const
{
	QDoubleSpinBox* doubleSpinBox = static_cast<QDoubleSpinBox*>(editor);
	doubleSpinBox->setValue(index.model()->data(index, Qt::DisplayRole).toDouble());
}

void
OperationalDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const
{
	QDoubleSpinBox* doubleSpinBox = static_cast<QDoubleSpinBox*>(editor);
	doubleSpinBox->interpretText();
	
	if (!model->setData(index, doubleSpinBox->value(), Qt::EditRole))
	{
		doubleSpinBox->setValue(index.model()->data(index, Qt::DisplayRole).toDouble());
	}
}

void
OperationalDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
	editor->setGeometry(option.rect);
}	

void
OperationalDelegate::valueChanged(double d)
{
	emit commitData(static_cast<QWidget*>(QObject::sender()));
}