qgsstyleitemslistwidget.h

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/***************************************************************************
 qgsstyleitemslistwidget.h
 -------------------------
 begin                : June 2019
 copyright            : (C) 2019 by Nyall Dawson
 email                : nyall dot dawson at gmail.com
 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSSTYLEITEMSLISTWIDGET_H
#define QGSSTYLEITEMSLISTWIDGET_H
 
#include "ui_qgsstyleitemslistwidgetbase.h"
 
#include "qgis_gui.h"
#include "qgsstylemodel.h"
 
#include <QStyledItemDelegate>
#include <QWidget>
 
class QgsStyle;
class QMenu;
class QgsCombinedStyleModel;
 
 
#ifndef SIP_RUN
class QgsReadOnlyStyleModel : public QgsStyleProxyModel
{
    Q_OBJECT
  public:
    explicit QgsReadOnlyStyleModel( QgsStyleModel *sourceModel, QObject *parent = nullptr );
    explicit QgsReadOnlyStyleModel( QgsStyle *style, QObject *parent = nullptr );
    explicit QgsReadOnlyStyleModel( QgsCombinedStyleModel *style, QObject *parent = nullptr );
 
    Qt::ItemFlags flags( const QModelIndex &index ) const override;
    QVariant data( const QModelIndex &index, int role ) const override;
};

class QgsStyleModelDelegate : public QStyledItemDelegate
{
    Q_OBJECT
 
  public:
    QgsStyleModelDelegate( QObject *parent );
 
    QSize sizeHint( const QStyleOptionViewItem &option, const QModelIndex &index ) const override;
    void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const override;
};
 
#endif

class GUI_EXPORT QgsStyleItemsListWidget : public QWidget, private Ui::QgsStyleItemsListWidgetBase
{
    Q_OBJECT
 
  public:
    QgsStyleItemsListWidget( QWidget *parent SIP_TRANSFERTHIS );

    void setStyle( QgsStyle *style );

    void setEntityType( QgsStyle::StyleEntity type );

    void setEntityTypes( const QList<QgsStyle::StyleEntity> &filters ) SIP_SKIP;

    void setSymbolType( Qgis::SymbolType type );

    void setLayerType( Qgis::GeometryType type );

    QString currentTagFilter() const;
 
#ifndef SIP_RUN

    QMenu *advancedMenu();

    void setAdvancedMenu( QMenu *menu );

    void showAdvancedButton( bool enabled );
#endif

    QString currentItemName() const;

    QgsStyle::StyleEntity currentEntityType() const;
 
  protected:
    void showEvent( QShowEvent *event ) override;
 
  signals:

    void selectionChanged( const QString &name, QgsStyle::StyleEntity type );

    void selectionChangedWithStylePath( const QString &name, QgsStyle::StyleEntity type, const QString &stylePath );

    void saveEntity();
 
  private slots:
    void groupsCombo_currentIndexChanged( int index );
    void updateModelFilters();
    void onSelectionChanged( const QModelIndex &index, const QModelIndex &previous );
    void populateGroups();
    void openStyleManager();
 
  private:
    QgsStyle *mStyle = nullptr;
    QgsStyleProxyModel *mModel = nullptr;
    QgsStyleModelDelegate *mDelegate = nullptr;
    bool mUpdatingGroups = false;
};
 
#endif //QGSSTYLEITEMSLISTWIDGET_H