Move DivePictureModel to qt-models

This class will surely be used on the mobile version, and it was very
tangled inside divepicturewidget.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-models/divepicturemodel.h

@@ -0,0 +1,41 @@
+#ifndef DIVEPICTUREMODEL_H
+#define DIVEPICTUREMODEL_H
+
+#include <QAbstractTableModel>
+#include <QImage>
+#include <QFuture>
+
+typedef QPair<QString, QByteArray> SHashedFilename;
+
+class SHashedImage : public QImage {
+public:
+	SHashedImage(struct picture *picture);
+};
+
+
+struct PhotoHelper {
+	QImage image;
+	int offsetSeconds;
+};
+
+class DivePictureModel : public QAbstractTableModel {
+	Q_OBJECT
+public:
+	static DivePictureModel *instance();
+	virtual int columnCount(const QModelIndex &parent = QModelIndex()) const;
+	virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+	virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
+	void updateDivePictures();
+	void updateDivePicturesWhenDone(QList<QFuture<void> >);
+	void removePicture(const QString& fileUrl);
+
+private:
+	DivePictureModel();
+	int numberOfPictures;
+	// Currently, load the images on the fly
+	// Later, use a thread to load the images
+	// Later, save the thumbnails so we don't need to reopen every time.
+	QHash<QString, PhotoHelper> stringPixmapCache;
+};
+
+#endif