How do I make items in qlistview (iconmode) align neatly?

Fundies

All I want is for my QImages in my model to align neatly after drag and drop. How do I make things align nicely after drop? Also when I drop one Image upon another it gets deleted. I want it to push the images over not delete. I've looked at the examples but I can't figure this out... Anyone know how to fix this?

I want: good
But I am getting:
bad

AnimationView::AnimationView(QWidget* parent) : QListView(parent)
{
    setSelectionMode(QAbstractItemView::ExtendedSelection);
    setViewMode(QListView::IconMode);
    resize(800, 600);
    setDragEnabled(true);
    setDragDropMode(QAbstractItemView::InternalMove);
    setDropIndicatorShown(true);
    setDefaultDropAction(Qt::MoveAction);
    setAcceptDrops(true);
    setDragDropOverwriteMode(false);
}

#include "spritemodel.h"

#include <QDebug>

SpriteModel::SpriteModel() : QAbstractListModel()
{
}

void SpriteModel::setContents(QList<QPair<QImage, QOpenGLTexture*>> &newList)
{
    beginInsertRows(QModelIndex(), 0, newList.size());
    imageList = newList;
    endInsertRows();
}

int SpriteModel::rowCount(const QModelIndex & parent) const
{
    Q_UNUSED(parent);
    return imageList.size();
}

QVariant SpriteModel::data(const QModelIndex & index, int role) const
{
    if (role == Qt::DecorationRole)
        return imageList[index.row()].first;
    else if (role == Qt::DisplayRole)
        return "";
    else
        return QVariant();
}

Qt::DropActions SpriteModel::supportedDropActions() const
{
    return Qt::CopyAction | Qt::MoveAction;
}

Qt::ItemFlags SpriteModel::flags(const QModelIndex &index) const
{
    Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);

    if (index.isValid())
        return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | defaultFlags;
    else
        return Qt::ItemIsDropEnabled | defaultFlags;
}

bool SpriteModel::removeRows(int position, int rows, const QModelIndex &parent)
{
    beginRemoveRows(QModelIndex(), position, position+rows-1);

    for (int row = 0; row < rows; ++row) {
        imageList.removeAt(position);
    }

    endRemoveRows();
    return true;
}

bool SpriteModel::insertRows(int position, int rows, const QModelIndex &parent)
{
    beginInsertRows(QModelIndex(), position, position+rows-1);

    QImage img(imageList[0].first.width(), imageList[0].first.height(), imageList[0].first.format());
    QOpenGLTexture *texture = new QOpenGLTexture(img);

    for (int row = 0; row < rows; ++row) {
        imageList.insert(position, qMakePair(img, texture));
    }

    endInsertRows();
    return true;
}

bool SpriteModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    QImage img = value.value<QImage>();
    QOpenGLTexture *texture = new QOpenGLTexture(img);

    if (index.isValid() && role == Qt::EditRole) {

        imageList.replace(index.row(), qMakePair(img, texture));
        emit dataChanged(index, index);
        return true;
    }
    return false;
}