Picture handling: cleaning up the mess

We had pointers to data structures on the stack which we frequently
reallocated. These data structure contain basically a filename and an
offset. We then create a hash of the pointers to those datastructures with
the filename being the key. And then we passed those pointers around
through a Qt model(!!!) only in order to then later look up by filename
what the offset might be.

I am at a loss for words for the lunacy behind this design.

How about we just remember the offsets and pass the integers around?

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

3 files changed, 7 insertions, 8 deletions

diff --git a/qt-ui/divepicturewidget.cpp b/qt-ui/divepicturewidget.cpp
index b1078b42b..b44212470 100644
--- a/qt-ui/divepicturewidget.cpp
+++ b/qt-ui/divepicturewidget.cpp
@@ -49,7 +49,7 @@ void DivePictureModel::updateDivePictures()
 	stringPixmapCache.clear();
 	QStringList pictures;
 	FOR_EACH_PICTURE (&displayed_dive) {
-		stringPixmapCache[QString(picture->filename)].picture = picture;
+		stringPixmapCache[QString(picture->filename)].offsetSeconds = picture->offset.seconds;
 		pictures.push_back(QString(picture->filename));
 	}
 
@@ -89,7 +89,7 @@ QVariant DivePictureModel::data(const QModelIndex &index, int role) const
 	} else if (index.column() == 1) {
 		switch (role) {
 		case Qt::UserRole:
-			ret = QVariant::fromValue((void *)stringPixmapCache[key].picture);
+			ret = QVariant::fromValue((int)stringPixmapCache[key].offsetSeconds);
 		break;
 		case Qt::DisplayRole:
 			ret = key;
@@ -100,7 +100,7 @@ QVariant DivePictureModel::data(const QModelIndex &index, int role) const
 
 void DivePictureModel::removePicture(const QString &fileUrl)
 {
-	dive_remove_picture(stringPixmapCache[fileUrl].picture);
+	dive_remove_picture(fileUrl.toUtf8().data());
 	copy_dive(current_dive, &displayed_dive);
 	updateDivePictures();
 	mark_divelist_changed(true);
diff --git a/qt-ui/divepicturewidget.h b/qt-ui/divepicturewidget.h
index 6f53bee09..aa524e1a6 100644
--- a/qt-ui/divepicturewidget.h
+++ b/qt-ui/divepicturewidget.h
@@ -5,10 +5,9 @@
 #include <QListView>
 #include <QThread>
 
-struct picture;
 struct PhotoHelper {
 	QImage image;
-	struct picture *picture;
+	int offsetSeconds;
 };
 
 class DivePictureModel : public QAbstractTableModel {
diff --git a/qt-ui/profile/profilewidget2.cpp b/qt-ui/profile/profilewidget2.cpp
index 3b37e4115..c3a289dfa 100644
--- a/qt-ui/profile/profilewidget2.cpp
+++ b/qt-ui/profile/profilewidget2.cpp
@@ -1360,17 +1360,17 @@ void ProfileWidget2::plotPictures()
 	double x, y, lastX = -1.0, lastY = -1.0;
 	DivePictureModel *m = DivePictureModel::instance();
 	for (int i = 0; i < m->rowCount(); i++) {
-		struct picture *pic  = (struct picture*) m->index(i,1).data(Qt::UserRole).value<void*>();
+		int offsetSeconds = m->index(i,1).data(Qt::UserRole).value<int>();
 		// it's a correct picture, but doesn't have a timestamp: only show on the widget near the
 		// information area.
-		if (!pic->offset.seconds)
+		if (!offsetSeconds)
 			continue;
 		DivePictureItem *item = new DivePictureItem();
 		item->setPixmap(m->index(i,0).data(Qt::DecorationRole).value<QPixmap>());
 		item->setFileUrl(m->index(i,1).data().toString());
 		// let's put the picture at the correct time, but at a fixed "depth" on the profile
 		// not sure this is ideal, but it seems to look right.
-		x = timeAxis->posAtValue(pic->offset.seconds);
+		x = timeAxis->posAtValue(offsetSeconds);
 		if (i == 0)
 			y = 10;
 		else if (fabs(x - lastX) < 4)