EffectSelectDialog.h

Go to the documentation of this file.

/*
 * EffectSelectDialog.h - dialog to choose effect plugin
 *
 * Copyright (c) 2006-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
 * Copyright (c) 2023 Lost Robot <r94231/at/gmail.com>
 *
 * This file is part of LMMS - https://lmms.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program (see COPYING); if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA.
 *
 */
 
#ifndef LMMS_GUI_EFFECT_SELECT_DIALOG_H
#define LMMS_GUI_EFFECT_SELECT_DIALOG_H
 
#include "Effect.h"
 
#include <QDialog>
#include <QRegularExpression>
#include <QSortFilterProxyModel>
#include <QStandardItemModel>
 
class QScrollArea;
class QTableView;
class QLineEdit;
 
namespace lmms::gui
{
 
class DualColumnFilterProxyModel : public QSortFilterProxyModel
{
        Q_OBJECT
public:
        DualColumnFilterProxyModel(QObject* parent = nullptr) : QSortFilterProxyModel(parent)
        {
        }
 
        void setEffectTypeFilter(const QString& filter)
        {
                m_effectTypeFilter = filter;
                invalidateFilter();
        }
 
protected:
        bool filterAcceptsRow(int source_row, const QModelIndex& source_parent) const override
        {
                QModelIndex nameIndex = sourceModel()->index(source_row, 0, source_parent);
                QModelIndex typeIndex = sourceModel()->index(source_row, 1, source_parent);
 
                QString name = sourceModel()->data(nameIndex, Qt::DisplayRole).toString();
                QString type = sourceModel()->data(typeIndex, Qt::DisplayRole).toString();
 
                QRegularExpression nameRegularExpression(filterRegularExpression());
                nameRegularExpression.setPatternOptions(QRegularExpression::CaseInsensitiveOption);
                
                bool nameFilterPassed = nameRegularExpression.match(name).capturedStart() != -1;
 
                bool typeFilterPassed = type.contains(m_effectTypeFilter, Qt::CaseInsensitive);
 
                return nameFilterPassed && typeFilterPassed;
        }
 
private:
        QString m_effectTypeFilter;
};
 
 
class EffectSelectDialog : public QDialog
{
        Q_OBJECT
public:
        EffectSelectDialog(QWidget* parent);
 
        Effect* instantiateSelectedPlugin(EffectChain* parent);
 
protected slots:
        void acceptSelection();
        void rowChanged(const QModelIndex&, const QModelIndex&);
        void updateSelection();
        
        bool eventFilter(QObject* obj, QEvent* event) override;
 
private:
        EffectKeyList m_effectKeys;
        EffectKey m_currentSelection;
 
        QStandardItemModel m_sourceModel;
        DualColumnFilterProxyModel m_model;
        QWidget* m_descriptionWidget;
        QTableView* m_pluginList;
        QScrollArea* m_scrollArea;
        QLineEdit* m_filterEdit;
};
 
} // namespace lmms::gui
 
#endif