text: // Copyright 2021 The VGC Developers
  // See the COPYRIGHT file at the top-level directory of this distribution
  // and at https://github.com/vgc/vgc/blob/master/COPYRIGHT
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #include <vgc/widgets/dialog.h>
  
  namespace vgc {
  namespace widgets {
  
  Dialog::Dialog(QWidget* parent) :
      QDialog(parent),
      isGeometrySaved_(false)
  {
      connect(this, &QDialog::finished, this, &Dialog::onFinished_);
  }
  
  void Dialog::closeEvent(QCloseEvent* event)
  {
      saveGeometry_();
      QDialog::closeEvent(event);
  }
  
  void Dialog::hideEvent(QHideEvent* event)
  {
      saveGeometry_();
      QDialog::hideEvent(event);
  }
  
  void Dialog::showEvent(QShowEvent* event)
  {
      restoreGeometry_();
      QDialog::showEvent(event);
  }
  
  void Dialog::onFinished_(int)
  {
      saveGeometry_();
  }
  
  void Dialog::saveGeometry_()
  {
      isGeometrySaved_ = true;
      savedGeometry_ = geometry();
  }
  
  void Dialog::restoreGeometry_()
  {
      if (isGeometrySaved_)
          setGeometry(savedGeometry_);
  }
  
  } // namespace widgets
  } // namespace vgc
  