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ThumbsViewer.h
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ThumbsViewer.h
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/*
* Copyright (C) 2013 Ofer Kashayov <[email protected]>
* 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 THUMBS_VIEWER_H
#define THUMBS_VIEWER_H
#include <QtWidgets>
#include <exiv2/exiv2.hpp>
#include "Settings.h"
#include "FileSystemTree.h"
#include "Bookmarks.h"
#include "InfoViewer.h"
#include "Tags.h"
#include "MetadataCache.h"
#include "ImagePreview.h"
class Phototonic;
class ImageViewer;
#define BAD_IMAGE_SIZE 64
#define WINDOW_ICON_SIZE 48
class ImageTags;
struct DuplicateImage
{
QString filePath;
int duplicates;
int id = 0;
};
struct Histogram
{
float red[256]{};
float green[256]{};
float blue[256]{};
inline float compareChannel(const float hist1[256], const float hist2[256])
{
float len1 = 0.f, len2 = 0.f, corr = 0.f;
for (uint16_t i=0; i<256; i++) {
len1 += hist1[i];
len2 += hist2[i];
corr += std::sqrt(hist1[i] * hist2[i]);
}
const float part1 = 1.f / std::sqrt(len1 * len2);
return std::sqrt(1.f - part1 * corr);
}
inline float compare(const Histogram &other)
{
return compareChannel(red, other.red) +
compareChannel(green, other.green) +
compareChannel(blue, other.blue);
}
};
Q_DECLARE_METATYPE(Histogram);
class ThumbsViewer : public QListView {
Q_OBJECT
public:
enum UserRoles {
FileNameRole = Qt::UserRole + 1,
SortRole,
LoadedRole,
BrightnessRole,
TypeRole,
SizeRole,
TimeRole,
HistogramRole
};
enum ThumbnailLayouts {
Classic,
Squares,
Compact
};
ThumbsViewer(QWidget *parent, const std::shared_ptr<MetadataCache> &metadataCache);
void loadPrepare();
void applyFilter();
void reLoad();
void loadDuplicates();
void loadFileList();
void loadSubDirectories();
void setThumbColors();
bool setCurrentIndexByName(QString &fileName);
bool setCurrentIndexByRow(int row);
void setCurrentRow(int row);
void setImageViewerWindowTitle();
void setNeedToScroll(bool needToScroll);
void selectCurrentIndex();
QStandardItem *addThumb(QString &imageFullPath);
void abort(bool permanent = false);
void selectThumbByRow(int row);
void selectByBrightness(qreal min, qreal max);
int getNextRow();
int getPrevRow();
int getLastRow();
int getRandomRow();
int getCurrentRow();
QStringList getSelectedThumbsList();
QString getSingleSelectionFilename();
void setImageViewer(ImageViewer *imageViewer);
void sortBySimilarity();
InfoView *infoView;
ImagePreview *imagePreview;
ImageTags *imageTags;
QDir thumbsDir;
QStringList fileFilters;
QStandardItemModel *thumbsViewerModel;
QDir::SortFlags thumbsSortFlags;
int thumbSize;
QString filterString;
bool isBusy;
protected:
void startDrag(Qt::DropActions) override;
void mousePressEvent(QMouseEvent *event) override;
private:
void initThumbs();
bool loadThumb(int row);
void findDupes(bool resetCounters);
int getFirstVisibleThumb();
int getLastVisibleThumb();
void updateThumbsCount();
void updateFoundDupesState(int duplicates, int filesScanned, int originalImages);
void updateImageInfoViewer(int row);
QSize itemSizeHint() const;
QString thumbnailFileName(const QString &path) const;
QString locateThumbnail(const QString &path) const;
void storeThumbnail(const QString &originalPath, QImage thumbnail, const QSize &originalSize) const;
QFileInfo thumbFileInfo;
QFileInfoList thumbFileInfoList;
QList<Histogram> histograms;
QList<QString> histFiles;
QPixmap emptyImg;
QModelIndex currentIndex;
Phototonic *phototonic;
std::shared_ptr<MetadataCache> metadataCache;
ImageViewer *imageViewer;
QHash<QBitArray, DuplicateImage> dupImageHashes;
bool isAbortThumbsLoading = false;
bool isClosing = false;
bool isNeedToScroll = false;
int currentRow = 0;
bool scrolledForward = false;
int thumbsRangeFirst;
int thumbsRangeLast;
QTimer m_selectionChangedTimer;
QTimer m_loadThumbTimer;
public slots:
void loadVisibleThumbs(int scrollBarValue = 0);
void onSelectionChanged();
void invertSelection();
private slots:
void loadThumbsRange();
void loadAllThumbs();
};
#endif // THUMBS_VIEWER_H