qgslayoutitemmapoverview.h

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/***************************************************************************
                         qgslayoutitemmapoverview.h
                         --------------------
    begin                : October 2017
    copyright            : (C) 2017 by Nyall Dawson
    email                : nyall dot dawson at gmail dot 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 QgsLayoutItemMapOVERVIEW_H
#define QgsLayoutItemMapOVERVIEW_H

#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgslayoutitemmapitem.h"
#include "qgssymbol.h"
#include <QString>
#include <QObject>
#include <QPainter>

class QDomDocument;
class QDomElement;
class QgsLayoutItemMapOverview;

class CORE_EXPORT QgsLayoutItemMapOverviewStack : public QgsLayoutItemMapItemStack
{
  public:

    QgsLayoutItemMapOverviewStack( QgsLayoutItemMap *map );

    void addOverview( QgsLayoutItemMapOverview *overview SIP_TRANSFER );

    void removeOverview( const QString &overviewId );

    void moveOverviewUp( const QString &overviewId );

    void moveOverviewDown( const QString &overviewId );

    QgsLayoutItemMapOverview *overview( const QString &overviewId ) const;

    QgsLayoutItemMapOverview *overview( int index ) const;

    QgsLayoutItemMapOverview &operator[]( int index );

    QList< QgsLayoutItemMapOverview * > asList() const;
    bool readXml( const QDomElement &elem, const QDomDocument &doc, const QgsReadWriteContext &context ) override;

    QList< QgsMapLayer * > modifyMapLayerList( const QList< QgsMapLayer * > &layers );

};

class CORE_EXPORT QgsLayoutItemMapOverview : public QgsLayoutItemMapItem
{
    Q_OBJECT

  public:

    QgsLayoutItemMapOverview( const QString &name, QgsLayoutItemMap *map );
    ~QgsLayoutItemMapOverview() override;

    void draw( QPainter *painter ) override;
    bool writeXml( QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context ) const override;
    bool readXml( const QDomElement &itemElem, const QDomDocument &doc, const QgsReadWriteContext &context ) override;
    void finalizeRestoreFromXml() override;
    bool usesAdvancedEffects() const override;

    void setLinkedMap( QgsLayoutItemMap *map );

    QgsLayoutItemMap *linkedMap();

    void setFrameSymbol( QgsFillSymbol *symbol SIP_TRANSFER );

    QgsFillSymbol *frameSymbol();

    const QgsFillSymbol *frameSymbol() const; SIP_SKIP

    QPainter::CompositionMode blendMode() const { return mBlendMode; }

    void setBlendMode( QPainter::CompositionMode mode );

    bool inverted() const { return mInverted; }

    void setInverted( bool inverted );

    bool centered() const { return mCentered; }

    void setCentered( bool centered );

    void connectSignals();

    QgsVectorLayer *asMapLayer();

    bool accept( QgsStyleEntityVisitorInterface *visitor ) const override;

  public slots:

    void overviewExtentChanged();

  private:

    QgsLayoutItemMapOverview() = delete;

    QString mFrameMapUuid;
    QPointer< QgsLayoutItemMap > mFrameMap;

    std::unique_ptr< QgsFillSymbol > mFrameSymbol;

    QPainter::CompositionMode mBlendMode = QPainter::CompositionMode_SourceOver;

    bool mInverted = false;

    bool mCentered = false;

    std::unique_ptr< QgsVectorLayer > mExtentLayer;

    void createDefaultFrameSymbol();

};

#endif // QgsLayoutItemMapOVERVIEW_H