/** -*- mode: c++ ; c-basic-offset: 2 -*-
 * @file   MainWindow.h
 * @author Sebastien Fourey
 * @date   July 2010
 * @brief  Declaration of the class ImageFilter
 *
 * This file is part of the ZArt software's source code.
 *
 * Copyright Sebastien Fourey / GREYC Ensicaen (2010-...)
 *
 *                    https://foureys.users.greyc.fr/
 *
 * This software is a computer program whose purpose is to demonstrate
 * the possibilities of the GMIC image processing language by offering the
 * choice of several manipulations on a video stream aquired from a webcam. In
 * other words, ZArt is a GUI for G'MIC real-time manipulations on the output
 * of a webcam.
 *
 * This software is governed by the CeCILL  license under French law and
 * abiding by the rules of distribution of free software.  You can  use,
 * modify and/ or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL
 * "http://www.cecill.info". See also the directory "Licence" which comes
 * with this source code for the full text of the CeCILL license.
 *
 * As a counterpart to the access to the source code and  rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
 * liability.
 *
 * In this respect, the user's attention is drawn to the risks associated
 * with loading,  using,  modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean  that it is complicated to manipulate,  and  that  also
 * therefore means  that it is reserved for developers  and  experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systems and/or
 * data to be ensured and,  more generally, to use and operate it in the
 * same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 */
#ifndef _MAINWINDOW_H_
#define _MAINWINDOW_H_

#include <QtXml>
#include <QMainWindow>
#include <QTimer>
#include <QTime>
#include <QLineEdit>
#include <QDomNode>
#include <QVector>
#include "ui_MainWindow.h"
#include "WebcamSource.h"
#include "StillImageSource.h"
#include "VideoFileSource.h"
#include "FilterThread.h"
#include <QMutex>
#include <QSemaphore>
#include <QVector>


class QScrollArea;
class ImageView;
class QSpinBox;
class QComboBox;
class QNetworkReply;
class QNetworkAccessManager;
class QMenu;
class TreeWidgetPresetItem;
class FullScreenWidget;

class MainWindow : public QMainWindow, public Ui::MainWindow {
  Q_OBJECT
public:

  MainWindow( QWidget * parent = 0 );
  ~MainWindow();
  QString getPreset( const QString & name );

  enum Source { Webcam, StillImage, Video };
  enum DisplayMode { InWindow, FullScreen };

public slots:

  void play();
  void stop();
  void onImageAvailable();
  void onEndOfSource();
  void onPlayAction(bool);
  void commandModified();
  void presetClicked( QTreeWidgetItem * item, int column );

  void imageViewMouseEvent( QMouseEvent * );
  void snapshot();
  void about();
  void license();
  void visitGMIC();
  void setWebcamSkipFrames(int );
  void setVideoSkipFrames(int );
  void setImageFPS(int );
  void setVideoFPS(int );
  void setPresetsFile( const QString & = QString() );
  void savePresetsFile();

  void onWebcamComboChanged( int index );
  void onWebcamResolutionComboChanged(int i );
  void onUseBuiltinPresets( bool );
  void onReloadPresets();
  void onPreviewModeChanged( int index );
  void onRightPanel( bool );
  void onComboSourceChanged( int );
  void onOpenImageFile();
  void onOpenVideoFile();
  void updateWindowTitle();
  void onVideoFileLoop(bool);
  void changePlayButtonAppearence(bool);
  void onFilterThreadFinished();
  void onCommandParametersChanged();
  void enterFullScreenMode();
  void leaveFullScreenMode();
  void onRefreshCameraResolutions();
  void onDetectCameras();
  void initGUIFromCameraList(const QList<int> & camList);

private:

  void setPresets( const QDomElement & );
  void addPresets( const QDomElement &,
                   TreeWidgetPresetItem *,
                   TreeWidgetPresetItem * );
  void setCurrentPreset( QDomNode node );
  void showOneSourceImage();
  void updateCameraResolutionCombo();

  int _firstWebcamIndex;
  int _secondWebcamIndex;
  FilterThread * _filterThread;
  Source _source;
  WebcamSource _webcam;
  StillImageSource _stillImage;
  VideoFileSource _videoFile;
  ImageSource * _currentSource;
  QDomDocument _presets;
  QDomNode _currentPresetNode;
  QString _currentDir;
  QString _imageFilters;
  QButtonGroup * _bgZoom;
  QString _filtersPath;
  QAction * _builtInPresetsAction;
  QAction * _startStopAction;
  DisplayMode _displayMode;
  FullScreenWidget * _fullScreenWidget;
  QSemaphore _filterThreadSemaphore;
  bool _zeroFPS;
  int _presetsCount;
  QVector<int> _cameraDefaultResolutionsIndexes;
};

#endif
