thumbview.h

/*
 *  Copyright (C) 2013 Ofer Kashayov <oferkv@live.com>
 *  This file is part of Phototonic Image Viewer.
 *
 *  Phototonic is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Phototonic 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Phototonic.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef THUMBVIEW_H
#define THUMBVIEW_H

#include <QListView>
#include <QDir>
#include <QDebug>
#include <QStandardItem>
#include <QTreeView>
#include <QImageReader>
#include <QMainWindow>
#include <QWidget>
#include <QDrag>
#include <QApplication>
#include <QScrollBar>
#include <QMimeData>
#include <QDragEnterEvent>
#include <QDateTime>
#include <QItemDelegate>
#include <QDirIterator>
#include <exiv2/exiv2.hpp>
#include <QTimer>
#include "global.h"
#include "infoview.h"

class ThumbView : public QListView
{
	Q_OBJECT

public:
	InfoView *infoView;
	QDir *thumbsDir;
	QStringList *fileFilters;
	QList<QStandardItem*> *thumbList;
	QStandardItemModel *thumbViewModel;
	QString currentViewDir;
	QDir::SortFlags thumbsSortFlags;
	int thumbSize;
	int thumbWidth;
	int thumbHeight;
	QString filterStr;

	enum UserRoles
	{
		FileNameRole = Qt::UserRole + 1,
		SortRole,
		LoadedRole
	};

	enum ThumbnailLayouts
	{
		Classic,
		Compact,
		Squares
	};

	ThumbView(QWidget *parent);
	void load(QString &cliImageName);
	void setNeedScroll(bool needScroll)
	{
		isNeedScroll = needScroll;
	}
	void setThumbColors();
	void setCurrentIndexByName(QString &FileName);
	void selectCurrentIndex();
	int getNextRow();
	int getPrevRow();
	int getLastRow();
	int getRandomRow();
	int getCurrentRow();
	void setCurrentRow(int row);
	void setImageviewWindowTitle();
	QString getSingleSelectionFilename();
	void addThumb(QString &imageFullPath);
	void abort();

protected:
	void startDrag(Qt::DropActions);
	void wheelEvent(QWheelEvent *event);
	void mousePressEvent(QMouseEvent *event);
	
private:
	QFileInfo thumbFileInfo;
	QFileInfoList thumbFileInfoList;
	QImage emptyImg;
	QModelIndex currentIndex;
	QImageReader imageInfoReader;
	QWidget *mainWindow;
	
	bool abortOp;
	int newIndex;
	bool thumbLoaderActive;
	bool isNeedScroll;
	int currentRow;
	bool scrolledForward;
	int thumbsRangeFirst;
	int thumbsRangeLast;

	void initThumbs();
	int getFirstVisibleThumb();
	int getLastVisibleThumb();
	bool isThumbVisible(QModelIndex idx);
	void updateThumbsCount();
	void updateExifInfo(QString imageFullPath);

signals:
	void unsetBusy();
	void setStatus(QString state);

public slots:
	void loadVisibleThumbs(int value = 0);
	void handleSelectionChanged(const QItemSelection& selection);
	void invertSelection();

private slots:
	void loadThumbsRange();
};

class FSTree : public QTreeView
{
	Q_OBJECT

public:
	FSTree(QWidget *parent);
	QModelIndex getCurrentIndex();

protected:
	void dragEnterEvent(QDragEnterEvent *event);
	void dragMoveEvent(QDragMoveEvent *event);
	void dropEvent(QDropEvent *event);

signals:
	void dropOp(Qt::KeyboardModifiers keyMods, bool dirOp, QString cpMvDirPath);

private:
	QModelIndex dndOrigSelection;

private slots:
	void resizeTreeColumn(const QModelIndex &);
};

#endif // THUMBVIEW_H