Dive pictures: implement FindMovedImagesDialog

Move the find-moved-images functions into a new translation unit
and present the user with the identified matches before applying
them.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 49 insertions, 0 deletions

diff --git a/desktop-widgets/findmovedimagesdialog.h b/desktop-widgets/findmovedimagesdialog.h
new file mode 100644
index 000000000..9cae6e8fd
--- /dev/null
+++ b/desktop-widgets/findmovedimagesdialog.h
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef FINDMOVEDIMAGES_H
+#define FINDMOVEDIMAGES_H
+
+#include "ui_findmovedimagesdialog.h"
+#include <QFutureWatcher>
+#include <QVector>
+#include <QMap>
+#include <QAtomicInteger>
+
+class FindMovedImagesDialog : public QDialog {
+	Q_OBJECT
+public:
+	FindMovedImagesDialog(QWidget *parent = 0);
+private
+slots:
+	void on_scanButton_clicked();
+	void apply();
+	void on_buttonBox_rejected();
+	void setProgress(double progress, QString path);
+	void searchDone();
+private:
+	struct Match {
+		QString originalFilename;
+		QString localFilename;
+		int matchingPathItems;
+	};
+	struct ImageMatch {
+		QString localFilename;
+		int score;
+	};
+	struct ImagePath {
+		QString fullPath;
+		QString	filenameUpperCase;
+		ImagePath() = default;		// For some reason QVector<...>::reserve() needs a default constructor!?
+		ImagePath(const QString &path);
+		inline bool operator<(const ImagePath &path2) const;
+	};
+	Ui::FindMovedImagesDialog ui;
+	QFutureWatcher<QVector<Match>> watcher;
+	QVector<Match> matches;
+	QAtomicInt stopScanning;
+	QScopedPointer<QFontMetrics> fontMetrics;		// Needed to format elided paths
+
+	void learnImage(const QString &filename, QMap<QString, ImageMatch> &matches, const QVector<ImagePath> &imagePaths);
+	QVector<Match> learnImages(const QString &dir, int maxRecursions, QVector<QString> imagePaths);
+};
+
+#endif