C++ TilesetView::tilesetModel方法代码示例

void TilesetDock::removeTiles()
{
    TilesetView *view = currentTilesetView();
    if (!view)
        return;
    if (!view->selectionModel()->hasSelection())
        return;

    const QModelIndexList indexes = view->selectionModel()->selectedIndexes();
    const TilesetModel *model = view->tilesetModel();
    QList<Tile*> tiles;

    for (const QModelIndex &index : indexes)
        if (Tile *tile = model->tileAt(index))
            tiles.append(tile);

    auto matchesAnyTile = [&tiles] (const Cell &cell) {
        if (Tile *tile = cell.tile)
            return tiles.contains(tile);
        return false;
    };
    const bool inUse = hasTileReferences(mMapDocument, matchesAnyTile);

    // If the tileset is in use, warn the user and confirm removal
    if (inUse) {
        QMessageBox warning(QMessageBox::Warning,
                            tr("Remove Tiles"),
                            tr("One or more of the tiles to be removed are "
                               "still in use by the map!"),
                            QMessageBox::Yes | QMessageBox::No,
                            this);
        warning.setDefaultButton(QMessageBox::Yes);
        warning.setInformativeText(tr("Remove all references to these tiles?"));

        if (warning.exec() != QMessageBox::Yes)
            return;
    }

    QUndoStack *undoStack = mMapDocument->undoStack();
    undoStack->beginMacro(tr("Remove Tiles"));

    if (inUse)
        removeTileReferences(mMapDocument, matchesAnyTile);

    Tileset *tileset = view->tilesetModel()->tileset();
    undoStack->push(new RemoveTiles(mMapDocument, tileset, tiles));

    undoStack->endMacro();

    // Clear the current tiles, will be referencing the removed tiles
    setCurrentTiles(nullptr);
    setCurrentTile(nullptr);
}

/**
 * Synchronizes the selection with the given stamp. Ignored when the stamp is
 * changing because of a selection change in the TilesetDock.
 */
void TilesetDock::selectTilesInStamp(const TileStamp &stamp)
{
    if (mEmittingStampCaptured)
        return;

    QSet<Tile*> processed;
    QMap<QItemSelectionModel*, QItemSelection> selections;

    for (const TileStampVariation &variation : stamp.variations()) {
        const TileLayer &tileLayer = *variation.tileLayer();
        for (const Cell &cell : tileLayer) {
            if (Tile *tile = cell.tile) {
                if (processed.contains(tile))
                    continue;

                processed.insert(tile); // avoid spending time on duplicates

                Tileset *tileset = tile->tileset();
                int tilesetIndex = mTilesets.indexOf(tileset->sharedPointer());
                if (tilesetIndex != -1) {
                    TilesetView *view = tilesetViewAt(tilesetIndex);
                    if (!view->model()) // Lazily set up the model
                        setupTilesetModel(view, tileset);

                    const TilesetModel *model = view->tilesetModel();
                    const QModelIndex modelIndex = model->tileIndex(tile);
                    QItemSelectionModel *selectionModel = view->selectionModel();
                    selections[selectionModel].select(modelIndex, modelIndex);
                }
            }
        }
    }

    if (!selections.isEmpty()) {
        mSynchronizingSelection = true;

        // Mark captured tiles as selected
        for (auto i = selections.constBegin(); i != selections.constEnd(); ++i) {
            QItemSelectionModel *selectionModel = i.key();
            const QItemSelection &selection = i.value();
            selectionModel->select(selection, QItemSelectionModel::SelectCurrent);
        }

        // Show/edit properties of all captured tiles
        mMapDocument->setSelectedTiles(processed.toList());

        // Update the current tile (useful for animation and collision editors)
        auto first = selections.begin();
        QItemSelectionModel *selectionModel = first.key();
        const QItemSelection &selection = first.value();
        const QModelIndex currentIndex = selection.first().topLeft();
        if (selectionModel->currentIndex() != currentIndex)
            selectionModel->setCurrentIndex(currentIndex, QItemSelectionModel::NoUpdate);
        else
            currentChanged(currentIndex);

        mSynchronizingSelection = false;
    }
}

void TilesetDock::tileImageSourceChanged(Tile *tile)
{
    int tilesetIndex = mTilesets.indexOf(tile->tileset()->sharedPointer());
    if (tilesetIndex != -1) {
        TilesetView *view = tilesetViewAt(tilesetIndex);
        if (TilesetModel *model = view->tilesetModel())
            model->tileChanged(tile);
    }
}

void TilesetDock::tilesetChanged(Tileset *tileset)
{
    // Update the affected tileset model, if it exists
    const int index = indexOf(mTilesets, tileset);
    if (index < 0)
        return;

    TilesetView *view = tilesetViewAt(index);

    if (TilesetModel *model = view->tilesetModel()) {
        view->updateBackgroundColor();
        model->tilesetChanged();
    }
}

void TilesetEditor::removeTiles()
{
    TilesetView *view = currentTilesetView();
    if (!view)
        return;
    if (!view->selectionModel()->hasSelection())
        return;

    const QModelIndexList indexes = view->selectionModel()->selectedIndexes();
    const TilesetModel *model = view->tilesetModel();
    QList<Tile*> tiles;

    for (const QModelIndex &index : indexes)
        if (Tile *tile = model->tileAt(index))
            tiles.append(tile);

    auto matchesAnyTile = [&tiles] (const Cell &cell) {
        if (Tile *tile = cell.tile())
            return tiles.contains(tile);
        return false;
    };

    QList<MapDocument *> mapsUsingTiles;
    for (MapDocument *mapDocument : mCurrentTilesetDocument->mapDocuments())
        if (hasTileReferences(mapDocument, matchesAnyTile))
            mapsUsingTiles.append(mapDocument);

    // If the tileset is in use, warn the user and confirm removal
    if (!mapsUsingTiles.isEmpty()) {
        QMessageBox warning(QMessageBox::Warning,
                            tr("Remove Tiles"),
                            tr("Tiles to be removed are in use by open maps!"),
                            QMessageBox::Yes | QMessageBox::No,
                            mMainWindow->window());
        warning.setDefaultButton(QMessageBox::Yes);
        warning.setInformativeText(tr("Remove all references to these tiles?"));

        if (warning.exec() != QMessageBox::Yes)
            return;
    }

    for (MapDocument *mapDocument : mapsUsingTiles)
        removeTileReferences(mapDocument, matchesAnyTile);

    mCurrentTilesetDocument->undoStack()->push(new RemoveTiles(mCurrentTilesetDocument, tiles));

    // todo: make sure any current brushes are no longer referring to removed tiles
    setCurrentTile(nullptr);
}

void TilesetDock::updateActions()
{
    bool external = false;
    TilesetView *view = 0;
    const int index = mTabBar->currentIndex();
    if (index > -1) {
        view = tilesetViewAt(index);
        if (view) {
            mViewStack->setCurrentWidget(view);
            external = view->tilesetModel()->tileset()->isExternal();
        }
    }

    mRenameTileset->setEnabled(view && !external);
    mImportTileset->setEnabled(view && external);
    mExportTileset->setEnabled(view && !external);
    mPropertiesTileset->setEnabled(view && !external);
    mDeleteTileset->setEnabled(view);
}

void TilesetDock::updateCurrentTiles()
{
    TilesetView *view = currentTilesetView();
    if (!view)
        return;

    const QItemSelectionModel *s = view->selectionModel();
    if (!s)
        return;

    const QModelIndexList indexes = s->selection().indexes();
    if (indexes.isEmpty())
        return;

    const QModelIndex &first = indexes.first();
    int minX = first.column();
    int maxX = first.column();
    int minY = first.row();
    int maxY = first.row();

    for (const QModelIndex &index : indexes) {
        if (minX > index.column()) minX = index.column();
        if (maxX < index.column()) maxX = index.column();
        if (minY > index.row()) minY = index.row();
        if (maxY < index.row()) maxY = index.row();
    }

    // Create a tile layer from the current selection
    TileLayer *tileLayer = new TileLayer(QString(), 0, 0,
                                         maxX - minX + 1,
                                         maxY - minY + 1);

    const TilesetModel *model = view->tilesetModel();
    for (const QModelIndex &index : indexes) {
        tileLayer->setCell(index.column() - minX,
                           index.row() - minY,
                           Cell(model->tileAt(index)));
    }

    setCurrentTiles(tileLayer);
}

void TilesetEditor::selectionChanged()
{
    TilesetView *view = currentTilesetView();
    if (!view)
        return;

    updateAddRemoveActions();

    const QItemSelectionModel *s = view->selectionModel();
    const QModelIndexList indexes = s->selection().indexes();
    if (indexes.isEmpty())
        return;

    const TilesetModel *model = view->tilesetModel();
    QList<Tile*> selectedTiles;

    for (const QModelIndex &index : indexes)
        if (Tile *tile = model->tileAt(index))
            selectedTiles.append(tile);

    mCurrentTilesetDocument->setSelectedTiles(selectedTiles);
}

void TilesetEditor::indexPressed(const QModelIndex &index)
{
    TilesetView *view = currentTilesetView();
    if (Tile *tile = view->tilesetModel()->tileAt(index))
        mCurrentTilesetDocument->setCurrentObject(tile);
}