Implement Drag and Drop in Movie Archive

Well, this was actually a bit of a drag. You have read the docs very
carefully to get it right. For one, don't construct the drag object in
mousePressEvent if you also want a double click, otherwise you end up
with very weird behavior.

Same goes for the receiving end. Differentiate between dragEnterEvent
and dragMoveEvent, otherwise you'll only be able to drop items if you
hit the right row on entering.

There are some artefacts during the drag, but I guess that's a Qt bug.
Didn't bother to look into it.

1 files changed, 14 insertions, 0 deletions

diff --git a/archiveview.h b/archiveview.h
index f1b9029..dbe0e8f 100644
--- a/archiveview.h
+++ b/archiveview.h
@@ -33,6 +33,8 @@ class QCompleter;
 class QStandardItemModel;
 class QSpinBox;
 class QToolBar;
+class QMouseEvent;
+class QDragEnterEvent;
 
 class ArchiveView : public QWidget {
     Q_OBJECT
@@ -96,6 +98,11 @@ class ArchiveTree : public SmTreeView {
         void deleteFromTree();
         void newPart();
 
+    protected:
+        virtual void dragEnterEvent(QDragEnterEvent *e);
+        virtual void dragMoveEvent(QDragMoveEvent *e);
+        virtual void dropEvent(QDropEvent *e);
+
     private:
         void impossible(const QString msg = tr("Unable to perform function!"));
         QModelIndex firstSelected();
@@ -106,6 +113,13 @@ class ArchiveTree : public SmTreeView {
 class ArchiveFiles : public SmTreeView {
     public:
         explicit ArchiveFiles(const QString &headerSettings = "afilesheaders", QWidget *parent = 0);
+
+    protected:
+        virtual void mousePressEvent(QMouseEvent *e);
+        virtual void mouseMoveEvent(QMouseEvent *e);
+
+    private:
+        QPoint mDragStartPos;
 };
 
 class ArchiveProxy : public QSortFilterProxyModel {