subsurface/qt-models/divepicturemodel.h
Berthold Stoeger f47f2773fd Dive pictures: don't repopulate DivePictureModel on deletion
On deletion of a single or multiple pictures, the whole DivePictureModel
was repopulated, which was clearly visible in the UI, owing to the
reconstructing of all images in the profile plot.

To avoid this vexing behavior, implement proper deletion routines in
DivePictureModel and ProfileWidget2. Since this needs sensible erase()
semantics the QList<PictureEntry> member of DivePictureModel was
replaced by a QVector. A QVector should be the default anyway, unless
there are very specific reasons to use a QList (which actually is
a deque, not a classical linked list).

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-05-21 22:17:28 +03:00

42 lines
1.2 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#ifndef DIVEPICTUREMODEL_H
#define DIVEPICTUREMODEL_H
#include <QAbstractTableModel>
#include <QImage>
#include <QFuture>
struct PictureEntry {
struct picture *picture;
QString filename;
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;
virtual void updateDivePictures();
void updateDivePicturesWhenDone(QList<QFuture<void>>);
void removePictures(const QVector<QString> &fileUrls);
int rowDDStart, rowDDEnd;
void updateDivePictureOffset(const QString &filename, int offsetSeconds);
public slots:
void setZoomLevel(int level);
void updateThumbnail(QString filename, QImage thumbnail);
private:
DivePictureModel();
QVector<PictureEntry> pictures;
int findPictureId(const QString &filename); // Return -1 if not found
double zoomLevel; // -1.0: minimum, 0.0: standard, 1.0: maximum
int size;
int defaultSize;
void updateThumbnails();
void updateZoom();
};
#endif