mirror of https://github.com/OpenMW/openmw.git
Dropped plugins now retain their selection so you can see where they went
Pieter van der Kloet
14 years ago
parent
8b50cd48f5
commit
410229e521
@ -0,0 +1,148 @@
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#include <QMimeData>
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#include <QBitArray>
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#include <QDebug>
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#include "pluginsmodel.hpp"
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PluginsModel::PluginsModel(QObject *parent) : QStandardItemModel(parent)
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{
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}
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void decodeDataRecursive(QDataStream &stream, QStandardItem *item)
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{
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int colCount, childCount;
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stream >> *item;
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stream >> colCount >> childCount;
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item->setColumnCount(colCount);
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int childPos = childCount;
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while(childPos > 0) {
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childPos--;
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QStandardItem *child = new QStandardItem();
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decodeDataRecursive(stream, child);
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item->setChild( childPos / colCount, childPos % colCount, child);
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}
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}
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bool PluginsModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
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int row, int column, const QModelIndex &parent)
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{
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// Code largely based on QStandardItemModel::dropMimeData
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// check if the action is supported
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if (!data || !(action == Qt::CopyAction || action == Qt::MoveAction))
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return false;
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// check if the format is supported
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QString format = QLatin1String("application/x-qstandarditemmodeldatalist");
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if (!data->hasFormat(format))
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return QAbstractItemModel::dropMimeData(data, action, row, column, parent);
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if (row > rowCount(parent))
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row = rowCount(parent);
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if (row == -1)
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row = rowCount(parent);
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if (column == -1)
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column = 0;
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// decode and insert
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QByteArray encoded = data->data(format);
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QDataStream stream(&encoded, QIODevice::ReadOnly);
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//code based on QAbstractItemModel::decodeData
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// adapted to work with QStandardItem
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int top = INT_MAX;
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int left = INT_MAX;
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int bottom = 0;
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int right = 0;
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QVector<int> rows, columns;
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QVector<QStandardItem *> items;
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while (!stream.atEnd()) {
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int r, c;
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QStandardItem *item = new QStandardItem();
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stream >> r >> c;
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decodeDataRecursive(stream, item);
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rows.append(r);
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columns.append(c);
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items.append(item);
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top = qMin(r, top);
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left = qMin(c, left);
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bottom = qMax(r, bottom);
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right = qMax(c, right);
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}
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// insert the dragged items into the table, use a bit array to avoid overwriting items,
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// since items from different tables can have the same row and column
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int dragRowCount = 0;
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int dragColumnCount = right - left + 1;
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// Compute the number of continuous rows upon insertion and modify the rows to match
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QVector<int> rowsToInsert(bottom + 1);
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for (int i = 0; i < rows.count(); ++i)
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rowsToInsert[rows.at(i)] = 1;
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for (int i = 0; i < rowsToInsert.count(); ++i) {
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if (rowsToInsert[i] == 1){
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rowsToInsert[i] = dragRowCount;
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++dragRowCount;
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}
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}
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for (int i = 0; i < rows.count(); ++i)
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rows[i] = top + rowsToInsert[rows[i]];
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QBitArray isWrittenTo(dragRowCount * dragColumnCount);
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// make space in the table for the dropped data
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int colCount = columnCount(parent);
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if (colCount < dragColumnCount + column) {
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insertColumns(colCount, dragColumnCount + column - colCount, parent);
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colCount = columnCount(parent);
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}
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insertRows(row, dragRowCount, parent);
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row = qMax(0, row);
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column = qMax(0, column);
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QStandardItem *parentItem = itemFromIndex (parent);
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if (!parentItem)
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parentItem = invisibleRootItem();
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QVector<QPersistentModelIndex> newIndexes(items.size());
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// set the data in the table
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for (int j = 0; j < items.size(); ++j) {
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int relativeRow = rows.at(j) - top;
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int relativeColumn = columns.at(j) - left;
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int destinationRow = relativeRow + row;
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int destinationColumn = relativeColumn + column;
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int flat = (relativeRow * dragColumnCount) + relativeColumn;
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// if the item was already written to, or we just can't fit it in the table, create a new row
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if (destinationColumn >= colCount || isWrittenTo.testBit(flat)) {
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destinationColumn = qBound(column, destinationColumn, colCount - 1);
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destinationRow = row + dragRowCount;
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insertRows(row + dragRowCount, 1, parent);
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flat = (dragRowCount * dragColumnCount) + relativeColumn;
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isWrittenTo.resize(++dragRowCount * dragColumnCount);
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}
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if (!isWrittenTo.testBit(flat)) {
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newIndexes[j] = index(destinationRow, destinationColumn, parentItem->index());
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isWrittenTo.setBit(flat);
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}
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}
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for(int k = 0; k < newIndexes.size(); k++) {
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if (newIndexes.at(k).isValid()) {
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parentItem->setChild(newIndexes.at(k).row(), newIndexes.at(k).column(), items.at(k));
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} else {
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delete items.at(k);
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}
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}
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// The important part, tell the view what is dropped
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emit indexesDropped(newIndexes);
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return true;
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}
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@ -0,0 +1,21 @@
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#ifndef PLUGINSMODEL_H
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#define PLUGINSMODEL_H
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#include <QStandardItemModel>
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class PluginsModel : public QStandardItemModel
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{
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Q_OBJECT
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public:
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PluginsModel(QObject *parent = 0);
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~PluginsModel() {};
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bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent);
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signals:
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void indexesDropped(QVector<QPersistentModelIndex> indexes);
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};
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#endif
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@ -0,0 +1,56 @@
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#include "pluginsview.hpp"
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#include <QDebug>
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#include <QSortFilterProxyModel>
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PluginsView::PluginsView(QWidget *parent) : QTableView(parent)
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{
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setSelectionBehavior(QAbstractItemView::SelectRows);
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setSelectionMode(QAbstractItemView::ExtendedSelection);
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setEditTriggers(QAbstractItemView::NoEditTriggers);
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setAlternatingRowColors(true);
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setDragEnabled(true);
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setDragDropMode(QAbstractItemView::InternalMove);
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setDropIndicatorShown(true);
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setDragDropOverwriteMode(false);
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//viewport()->setAcceptDrops(true);
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setContextMenuPolicy(Qt::CustomContextMenu);
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}
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void PluginsView::startDrag(Qt::DropActions supportedActions)
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{
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selectionModel()->select( selectionModel()->selection(),
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QItemSelectionModel::Select | QItemSelectionModel::Rows );
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QAbstractItemView::startDrag( supportedActions );
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}
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void PluginsView::setModel(PluginsModel *model)
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{
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/*QTableView::setModel(model);
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qRegisterMetaType< QVector<QPersistentModelIndex> >();
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connect(model, SIGNAL(indexesDropped(QVector<QPersistentModelIndex>)),
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this, SLOT(selectIndexes(QVector<QPersistentModelIndex>)), Qt::QueuedConnection);*/
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}
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void PluginsView::setModel(QSortFilterProxyModel *model)
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{
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QTableView::setModel(model);
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qRegisterMetaType< QVector<QPersistentModelIndex> >();
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connect(model->sourceModel(), SIGNAL(indexesDropped(QVector<QPersistentModelIndex>)),
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this, SLOT(selectIndexes(QVector<QPersistentModelIndex>)), Qt::QueuedConnection);
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}
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void PluginsView::selectIndexes( QVector<QPersistentModelIndex> aIndexes )
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{
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selectionModel()->clearSelection();
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foreach( QPersistentModelIndex pIndex, aIndexes )
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selectionModel()->select( pIndex, QItemSelectionModel::Select | QItemSelectionModel::Rows );
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}
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@ -0,0 +1,30 @@
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#ifndef PLUGINSVIEW_H
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#define PLUGINSVIEW_H
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#include <QTableView>
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#include "pluginsmodel.hpp"
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class QSortFilterProxyModel;
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class PluginsView : public QTableView
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{
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Q_OBJECT
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public:
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PluginsView(QWidget *parent = 0);
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PluginsModel* model() const
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{ return qobject_cast<PluginsModel*>(QAbstractItemView::model()); }
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void startDrag(Qt::DropActions supportedActions);
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void setModel(PluginsModel *model);
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void setModel(QSortFilterProxyModel *model);
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public slots:
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void selectIndexes(QVector<QPersistentModelIndex> aIndexes);
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};
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Q_DECLARE_METATYPE(QVector<QPersistentModelIndex>);
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#endif
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