I/Qmitk/QmitkMapPropertyDelegate.cpp

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/*============================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.

Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.

============================================================================*/

#ifndef NOMINMAX
#define NOMINMAX
#endif

#include "QmitkMapPropertyDelegate.h"

#include <QmitkCustomVariants.h>

#include <mitkRenderingManager.h>

#include <QApplication>
#include <QCheckBox>
#include <QColorDialog>
#include <QComboBox>
#include <QDoubleSpinBox>
#include <QLabel>
#include <QMessageBox>
#include <QPainter>
#include <QPen>
#include <QPushButton>
#include <QStringList>
#include <bitset>

QmitkMapPropertyDelegate::QmitkMapPropertyDelegate(QObject * /*parent*/)
{
}

void QmitkMapPropertyDelegate::paint(QPainter *painter,
                                     const QStyleOptionViewItem &option,
                                     const QModelIndex &index) const
{
  QVariant data = index.data(Qt::DisplayRole);

  QString name = data.value<QString>();

  QStyledItemDelegate::paint(painter, option, index);
}

QWidget *QmitkMapPropertyDelegate::createEditor(QWidget *parent,
                                                const QStyleOptionViewItem &option,
                                                const QModelIndex &index) const
{
  QVariant data = index.data(Qt::EditRole);
  QVariant displayData = index.data(Qt::DisplayRole);
  QString name = index.model()->data(index.model()->index(index.row(), index.column() - 1)).value<QString>();

  if (data.isValid())
  {
    QWidget *editorWidget = nullptr;

    if (data.type() == QVariant::Int)
    {
      QSpinBox *spinBox = new QSpinBox(parent);
      spinBox->setSingleStep(1);
      spinBox->setMinimum(std::numeric_limits<int>::min());
      spinBox->setMaximum(std::numeric_limits<int>::max());
      editorWidget = spinBox;
    }
    // see qt documentation. cast is correct, it would be obsolete if we
    // store doubles
    else if (static_cast<QMetaType::Type>(data.type()) == QMetaType::Float)
    {
      QDoubleSpinBox *spinBox = new QDoubleSpinBox(parent);
      spinBox->setDecimals(5);
      spinBox->setSingleStep(0.1);
      spinBox->setMinimum(std::numeric_limits<float>::min());
      spinBox->setMaximum(std::numeric_limits<float>::max());

      editorWidget = spinBox;
    }
    else if (data.type() == QVariant::StringList)
    {
      QStringList entries = data.value<QStringList>();
      QComboBox *comboBox = new QComboBox(parent);
      comboBox->setEditable(false);
      comboBox->addItems(entries);

      editorWidget = comboBox;
    }
    else
    {
      editorWidget = QStyledItemDelegate::createEditor(parent, option, index);
    }

    if (editorWidget)
    {
      // install event filter
      editorWidget->installEventFilter(const_cast<QmitkMapPropertyDelegate *>(this));
    }

    return editorWidget;
  }
  else
    return new QLabel(displayData.toString(), parent);
}

void QmitkMapPropertyDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{
  QVariant data = index.data(Qt::EditRole);
  QVariant displayData = index.data(Qt::DisplayRole);

  std::cout << "Set EDITOR DATA : " << data.toDouble() << std::endl;

  if (data.isValid())
  {
    if (data.type() == QVariant::Int)
    {
      QSpinBox *spinBox = qobject_cast<QSpinBox *>(editor);
      spinBox->setValue(data.toInt());
    }
    // see qt documentation. cast is correct, it would be obsolete if we
    // store doubles
    else if (static_cast<QMetaType::Type>(data.type()) == QMetaType::Float)
    {
      QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox *>(editor);
      spinBox->setValue(data.toDouble());

      std::cout << "Set EDITOR DATA : " << spinBox->value() << std::endl;
    }

    else if (data.type() == QVariant::StringList)
    {
      QComboBox *comboBox = qobject_cast<QComboBox *>(editor);
      QString displayString = displayData.value<QString>();
      comboBox->setCurrentIndex(comboBox->findData(displayString));
    }

    else
      return QStyledItemDelegate::setEditorData(editor, index);
  }
}

void QmitkMapPropertyDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
{
  QVariant data = index.data(Qt::EditRole);
  QVariant displayData = index.data(Qt::DisplayRole);

  if (data.isValid())
  {
    if (data.type() == QVariant::Color)
    {
      QWidget *colorBtn = qobject_cast<QWidget *>(editor);
      QVariant colorVariant;
      colorVariant.setValue<QColor>(colorBtn->palette().color(QPalette::Button));
      model->setData(index, colorVariant);
    }

    else if (data.type() == QVariant::Int)
    {
      QSpinBox *spinBox = qobject_cast<QSpinBox *>(editor);
      int intValue = spinBox->value();

      QVariant intValueVariant;
      intValueVariant.setValue<float>(static_cast<float>(intValue));
      model->setData(index, intValueVariant);
    }

    else if (static_cast<QMetaType::Type>(data.type()) == QMetaType::Float)
    {
      QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox *>(editor);
      double doubleValue = spinBox->value();

      std::cout << "SET MODEL DATA << FLOAT : " << doubleValue << std::endl;

      QVariant doubleValueVariant;
      doubleValueVariant.setValue<float>(static_cast<float>(doubleValue));
      std::cout << "SET MODEL DATA << Variant : " << doubleValue << std::endl;
      model->setData(index, doubleValueVariant);
    }

    else if (data.type() == QVariant::StringList)
    {
      QString displayData = data.value<QString>();

      QComboBox *comboBox = qobject_cast<QComboBox *>(editor);
      QString comboBoxValue = comboBox->currentText();

      QVariant comboBoxValueVariant;
      comboBoxValueVariant.setValue<QString>(comboBoxValue);
      model->setData(index, comboBoxValueVariant);
    }

    else
      QStyledItemDelegate::setModelData(editor, model, index);
  }
}

void QmitkMapPropertyDelegate::commitAndCloseEditor()
{
  QWidget *editor = nullptr;
  if (QPushButton *pushBtn = qobject_cast<QPushButton *>(sender()))
  {
    editor = pushBtn;
  }

  if (editor)
  {
    emit commitData(editor);
    emit closeEditor(editor);
  }
}

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

void QmitkMapPropertyDelegate::ComboBoxCurrentIndexChanged(int /*index*/)
{
  if (QComboBox *comboBox = qobject_cast<QComboBox *>(sender()))
  {
    emit commitData(comboBox);
    emit closeEditor(comboBox);
  }
}

void QmitkMapPropertyDelegate::SpinBoxValueChanged(const QString & /*value*/)
{
  QAbstractSpinBox *spinBox = nullptr;
  if ((spinBox = qobject_cast<QSpinBox *>(sender())) || (spinBox = qobject_cast<QDoubleSpinBox *>(sender())))
  {
    emit commitData(spinBox);
    emit closeEditor(spinBox);
  }
}

void QmitkMapPropertyDelegate::showColorDialog()
{
}

bool QmitkMapPropertyDelegate::eventFilter(QObject *o, QEvent *e)
{
  // filter all kind of events on our editor widgets
  // when certain events occur, repaint all render windows, because rendering relevant properties might have changed
  switch (e->type())
  {
    case QEvent::KeyRelease:
    case QEvent::MouseButtonRelease:
    case QEvent::MouseButtonDblClick:
    case QEvent::Wheel:
    case QEvent::FocusIn:
    {
      if (QWidget *editor = dynamic_cast<QWidget *>(o))
      {
        emit commitData(editor);
      }
      break;
    }
    default:
    {
      break;
    }
  }

  return false;
}