Drag and Drop Images

Now that we have the possibility to add images without meaningful
time stamps to a dive, we should let the user provide that time
offset manually. This patch allowed pictures to be dragged from
the image list to the profile.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

2 files changed, 33 insertions, 0 deletions

diff --git a/desktop-widgets/divepicturewidget.cpp b/desktop-widgets/divepicturewidget.cpp
index d095929ad..a3a3c7a65 100644
--- a/desktop-widgets/divepicturewidget.cpp
+++ b/desktop-widgets/divepicturewidget.cpp
@@ -14,6 +14,7 @@
 #include <mainwindow.h>
 #include <qthelper.h>
 #include <QStandardPaths>
+#include <QtWidgets>
 
 DivePictureWidget::DivePictureWidget(QWidget *parent) : QListView(parent)
 {
@@ -25,3 +26,32 @@ void DivePictureWidget::doubleClicked(const QModelIndex &index)
 	QString filePath = model()->data(index, Qt::DisplayPropertyRole).toString();
 	emit photoDoubleClicked(localFilePath(filePath));
 }
+
+
+void DivePictureWidget::mousePressEvent(QMouseEvent *event)
+{
+
+	QPixmap pixmap = model()->data(indexAt(event->pos()), Qt::DecorationRole).value<QPixmap>();
+
+	QString filename = model()->data(indexAt(event->pos()), Qt::DisplayPropertyRole).toString();
+
+	QByteArray itemData;
+	QDataStream dataStream(&itemData, QIODevice::WriteOnly);
+	dataStream << filename << event->pos();
+
+	QMimeData *mimeData = new QMimeData;
+	mimeData->setData("application/x-subsurfaceimagedrop", itemData);
+
+	QDrag *drag = new QDrag(this);
+	drag->setMimeData(mimeData);
+	drag->setPixmap(pixmap);
+	drag->setHotSpot(event->pos() - rectForIndex(indexAt(event->pos())).topLeft());
+
+	QPixmap tempPixmap = pixmap;
+	QPainter painter;
+	painter.begin(&tempPixmap);
+	painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
+	painter.end();
+
+	drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction);
+}
diff --git a/desktop-widgets/divepicturewidget.h b/desktop-widgets/divepicturewidget.h
index 3dc9767f1..87e8eec33 100644
--- a/desktop-widgets/divepicturewidget.h
+++ b/desktop-widgets/divepicturewidget.h
@@ -10,6 +10,9 @@ class DivePictureWidget : public QListView {
 	Q_OBJECT
 public:
 	DivePictureWidget(QWidget *parent);
+protected:
+	void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
+
 signals:
 	void photoDoubleClicked(const QString filePath);
 private