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// SPDX-License-Identifier: GPL-2.0
#include "qt-models/divepicturemodel.h"
#include "core/dive.h"
#include "core/metrics.h"
#include "core/divelist.h"
#include "core/imagedownloader.h"
#include "core/qthelper.h"
#include <QFileInfo>
DivePictureModel *DivePictureModel::instance()
{
static DivePictureModel *self = new DivePictureModel();
return self;
}
DivePictureModel::DivePictureModel() : rowDDStart(0),
rowDDEnd(0),
zoomLevel(0.0),
defaultSize(Thumbnailer::defaultThumbnailSize())
{
connect(Thumbnailer::instance(), &Thumbnailer::thumbnailChanged,
this, &DivePictureModel::updateThumbnail, Qt::QueuedConnection);
}
void DivePictureModel::updateDivePicturesWhenDone(QList<QFuture<void>> futures)
{
Q_FOREACH (QFuture<void> f, futures) {
f.waitForFinished();
}
updateDivePictures();
}
void DivePictureModel::setZoomLevel(int level)
{
zoomLevel = level / 10.0;
// zoomLevel is bound by [-1.0 1.0], see comment below.
if (zoomLevel < -1.0)
zoomLevel = -1.0;
if (zoomLevel > 1.0)
zoomLevel = 1.0;
updateZoom();
layoutChanged();
}
void DivePictureModel::updateZoom()
{
size = Thumbnailer::thumbnailSize(zoomLevel);
}
void DivePictureModel::updateThumbnails()
{
updateZoom();
for (PictureEntry &entry: pictures)
entry.image = Thumbnailer::instance()->fetchThumbnail(entry);
}
void DivePictureModel::updateDivePictures()
{
beginResetModel();
if (!pictures.isEmpty()) {
pictures.clear();
rowDDStart = rowDDEnd = 0;
Thumbnailer::instance()->clearWorkQueue();
}
int i;
struct dive *dive;
for_each_dive (i, dive) {
if (dive->selected) {
if (dive->id == displayed_dive.id)
rowDDStart = pictures.count();
FOR_EACH_PICTURE(dive)
pictures.push_back({picture, picture->filename, {}, picture->offset.seconds});
if (dive->id == displayed_dive.id)
rowDDEnd = pictures.count();
}
}
updateThumbnails();
endResetModel();
}
int DivePictureModel::columnCount(const QModelIndex&) const
{
return 2;
}
QVariant DivePictureModel::data(const QModelIndex &index, int role) const
{
QVariant ret;
if (!index.isValid())
return ret;
const PictureEntry &entry = pictures.at(index.row());
if (index.column() == 0) {
switch (role) {
case Qt::ToolTipRole:
ret = entry.filename;
break;
case Qt::DecorationRole:
ret = entry.image.scaled(size, size, Qt::KeepAspectRatio);
break;
case Qt::UserRole: // Used by profile widget to access bigger thumbnails
ret = entry.image.scaled(defaultSize, defaultSize, Qt::KeepAspectRatio);
break;
case Qt::DisplayRole:
ret = QFileInfo(entry.filename).fileName();
break;
case Qt::DisplayPropertyRole:
ret = QFileInfo(entry.filename).filePath();
}
} else if (index.column() == 1) {
switch (role) {
case Qt::UserRole:
ret = QVariant::fromValue(entry.offsetSeconds);
break;
case Qt::DisplayRole:
ret = entry.filename;
}
}
return ret;
}
// Return true if we actually removed a picture
static bool removePictureFromSelectedDive(const char *fileUrl)
{
int i;
struct dive *dive;
for_each_dive (i, dive) {
if (dive->selected && dive_remove_picture(dive, fileUrl))
return true;
}
return false;
}
// Calculate how many items of a range are before the given index
static int rangeBefore(int rangeFrom, int rangeTo, int index)
{
if (rangeTo <= rangeFrom)
return 0;
return std::min(rangeTo, index) - std::min(rangeFrom, index);
}
void DivePictureModel::removePictures(const QVector<QString> &fileUrls)
{
bool removed = false;
for (const QString &fileUrl: fileUrls)
removed |= removePictureFromSelectedDive(qPrintable(fileUrl));
if (!removed)
return;
copy_dive(current_dive, &displayed_dive);
mark_divelist_changed(true);
for (int i = 0; i < pictures.size(); ++i) {
// Find range [i j) of pictures to remove
if (std::find(fileUrls.begin(), fileUrls.end(), pictures[i].filename) == fileUrls.end())
continue;
int j;
for (j = i + 1; j < pictures.size(); ++j) {
if (std::find(fileUrls.begin(), fileUrls.end(), pictures[j].filename) == fileUrls.end())
break;
}
// Qt's model-interface is surprisingly idiosyncratic: you don't pass [first last), but [first last] ranges.
// For example, an empty list would be [0 -1].
beginRemoveRows(QModelIndex(), i, j - 1);
pictures.erase(pictures.begin() + i, pictures.begin() + j);
endRemoveRows();
// After removing pictures, we have to adjust rowDDStart and rowDDEnd.
// Calculate the part of the range that is before rowDDStart and rowDDEnd,
// respectively and subtract accordingly.
rowDDStart -= rangeBefore(i, j, rowDDStart);
rowDDEnd -= rangeBefore(i, j, rowDDEnd);
}
}
int DivePictureModel::rowCount(const QModelIndex&) const
{
return pictures.count();
}
int DivePictureModel::findPictureId(const QString &filename)
{
for (int i = 0; i < pictures.size(); ++i)
if (pictures[i].filename == filename)
return i;
return -1;
}
void DivePictureModel::updateThumbnail(QString filename, QImage thumbnail)
{
int i = findPictureId(filename);
if (i >= 0) {
pictures[i].image = thumbnail;
emit dataChanged(createIndex(i, 0), createIndex(i, 1));
}
}
void DivePictureModel::updateDivePictureOffset(const QString &filename, int offsetSeconds)
{
int i = findPictureId(filename);
if (i >= 0) {
pictures[i].offsetSeconds = offsetSeconds;
emit dataChanged(createIndex(i, 0), createIndex(i, 1));
}
}
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