From d24f813f3f2a05c112e803e4256b53535895fc98 Mon Sep 17 00:00:00 2001
From: Jedidiah Barber <contact@jedbarber.id.au>
Date: Wed, 14 Jul 2021 11:49:10 +1200
Subject: Initial mirror commit

---
 src/dic-options/DraggableListModel.cpp | 83 ++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 src/dic-options/DraggableListModel.cpp

(limited to 'src/dic-options/DraggableListModel.cpp')

diff --git a/src/dic-options/DraggableListModel.cpp b/src/dic-options/DraggableListModel.cpp
new file mode 100644
index 0000000..2ea0523
--- /dev/null
+++ b/src/dic-options/DraggableListModel.cpp
@@ -0,0 +1,83 @@
+#include "DraggableListModel.h"
+#include "../dictionary/CardPack.h"
+#include "../dictionary/Field.h"
+
+#include <QMimeData>
+
+Qt::ItemFlags DraggableListModel::flags(const QModelIndex &index) const
+    {
+    Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);
+    if (index.isValid())
+        return Qt::ItemIsDragEnabled | defaultFlags;
+    else
+        return Qt::ItemIsDropEnabled | defaultFlags;
+    }
+
+Qt::DropActions DraggableListModel::supportedDropActions() const
+    {
+    return Qt::MoveAction;
+    }
+
+QStringList DraggableListModel::mimeTypes() const
+    {
+    QStringList types;
+    types << "application/octet-stream";
+    return types;
+    }
+
+QMimeData *DraggableListModel::mimeData(const QModelIndexList &indexes) const
+    {
+    QStringList list;
+    QModelIndexList validIndexes;
+    foreach (QModelIndex index, indexes)
+        if (index.isValid() && index.column() == 0)
+            validIndexes << index;
+    qSort(validIndexes);
+
+    int num = validIndexes.size();
+    QByteArray encodedData;
+    QDataStream stream( &encodedData, QIODevice::WriteOnly );
+    const void** ptrs = new const void*[num];
+    int i=0;
+    foreach (QModelIndex index, validIndexes)
+        ptrs[i++] = dataPtr( index );
+    stream.writeBytes( (char*)ptrs, num*sizeof(void*) );
+    delete ptrs;
+    QMimeData *mimeData = new QMimeData();
+    mimeData->setData( "application/octet-stream", encodedData );
+    return mimeData;
+    }
+
+bool DraggableListModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
+    int row, int /*column*/, const QModelIndex &parent)
+    {
+    if (action == Qt::IgnoreAction)
+        return true;
+    if (!data->hasFormat("application/octet-stream"))
+        return false;
+
+    int beginRow;
+    if (row != -1)
+        beginRow = row;
+    else if (parent.isValid())
+        beginRow = parent.row();
+    else
+        beginRow = rowCount(QModelIndex());
+
+    QByteArray encodedData = data->data("application/octet-stream");
+    QDataStream stream( &encodedData, QIODevice::ReadOnly );
+    void** ptrs = new void*[ rowCount() ];
+    uint num;
+    stream.readBytes( (char*&)ptrs, num );   //TODO: Avoid converting pointer to other types
+    num /= sizeof(void*);
+
+    QList<QPersistentModelIndex> movedIndexes;
+    for(uint i=0; i<num; i++)
+        {
+        insertPointer( beginRow + i, ptrs[i] );
+        movedIndexes << QPersistentModelIndex( index(beginRow + i, 0, QModelIndex()) );
+        }
+    delete ptrs;
+    emit indexesDropped( movedIndexes );
+    return true;
+    }
-- 
cgit