qgsprojectstylesettings.h

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/***************************************************************************
    qgsprojectstylesettings.h
    ---------------------------
    begin                : May 2022
    copyright            : (C) 2022 by Mathieu Pellerin
    email                : nirvn dot asia 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 QGSPROJECTSTYLESETTINGS_H
#define QGSPROJECTSTYLESETTINGS_H
 
#include "qgis_core.h"
#include "qgstextformat.h"
#include "qgswkbtypes.h"
 
#include <memory.h>
#include <QAbstractListModel>
#include <QSortFilterProxyModel>
#include <QPointer>
 
class QDomElement;
class QgsReadWriteContext;
class QDomDocument;
class QgsProject;
class QgsSymbol;
class QgsColorRamp;
class QgsStyle;
class QgsCombinedStyleModel;
 
class CORE_EXPORT QgsProjectStyleSettings : public QObject
{
    Q_OBJECT
 
  public:
 
    QgsProjectStyleSettings( QgsProject *project = nullptr );
 
    ~QgsProjectStyleSettings() override;
 
    QgsSymbol *defaultSymbol( Qgis::SymbolType symbolType ) const SIP_FACTORY;
 
    void setDefaultSymbol( Qgis::SymbolType symbolType, QgsSymbol *symbol );
 
    QgsColorRamp *defaultColorRamp() const SIP_FACTORY;
 
    void setDefaultColorRamp( QgsColorRamp *colorRamp );
 
    QgsTextFormat defaultTextFormat() const;
 
    void setDefaultTextFormat( const QgsTextFormat &textFormat );
 
    bool randomizeDefaultSymbolColor() const { return mRandomizeDefaultSymbolColor; }
 
    void setRandomizeDefaultSymbolColor( bool randomized ) { mRandomizeDefaultSymbolColor = randomized; }
 
    double defaultSymbolOpacity() const { return mDefaultSymbolOpacity; }
 
    void setDefaultSymbolOpacity( double opacity ) { mDefaultSymbolOpacity = opacity; }
 
    void reset();
 
    void setProjectStyle( QgsStyle *style SIP_TRANSFER );
 
    QgsStyle *projectStyle();
 
    bool readXml( const QDomElement &element, const QgsReadWriteContext &context, Qgis::ProjectReadFlags flags = Qgis::ProjectReadFlags() );
 
    QDomElement writeXml( QDomDocument &doc, const QgsReadWriteContext &context ) const;
 
    QStringList styleDatabasePaths() const { return mStyleDatabases; }
 
    QList< QgsStyle * > styles() const;
 
    QgsStyle *styleAtPath( const QString &path );
 
    void addStyleDatabasePath( const QString &path );
 
    void setStyleDatabasePaths( const QStringList &paths );
 
    QgsCombinedStyleModel *combinedStyleModel();
 
  signals:
 
    void styleDatabasesChanged();
 
#ifndef SIP_RUN
 
    void styleDatabaseAboutToBeAdded( const QString &path );
 
    void styleDatabaseAdded( const QString &path );
 
    void styleDatabaseAboutToBeRemoved( const QString &path );
 
    void styleDatabaseRemoved( const QString &path );
 
    void projectStyleChanged();
 
#endif
  private:
 
    QgsProject *mProject = nullptr;
 
    std::unique_ptr< QgsSymbol > mDefaultMarkerSymbol;
    std::unique_ptr< QgsSymbol > mDefaultLineSymbol;
    std::unique_ptr< QgsSymbol > mDefaultFillSymbol;
    std::unique_ptr< QgsColorRamp > mDefaultColorRamp;
    QgsTextFormat mDefaultTextFormat;
 
    bool mRandomizeDefaultSymbolColor = true;
    double mDefaultSymbolOpacity = 1.0;
 
    QgsStyle *mProjectStyle = nullptr;
    QStringList mStyleDatabases;
    QList< QPointer< QgsStyle > > mStyles;
 
    QgsCombinedStyleModel *mCombinedStyleModel = nullptr;
 
    void loadStyleAtPath( const QString &path );
    void clearStyles();
 
};
 
class CORE_EXPORT QgsProjectStyleDatabaseModel : public QAbstractListModel
{
    Q_OBJECT
 
  public:
 
    enum Role
    {
      StyleRole = Qt::UserRole + 1, 
      PathRole, 
    };
 
    explicit QgsProjectStyleDatabaseModel( QgsProjectStyleSettings *settings, QObject *parent SIP_TRANSFERTHIS = nullptr );
 
    int rowCount( const QModelIndex &parent ) const override;
    QVariant data( const QModelIndex &index, int role ) const override;
 
    QgsStyle *styleFromIndex( const QModelIndex &index ) const;
 
    QModelIndex indexFromStyle( QgsStyle *style ) const;
 
    void setShowDefaultStyle( bool show );
 
    bool showDefaultStyle() const { return mShowDefault; }
 
  private slots:
    void styleDatabaseAboutToBeAdded( const QString &path );
    void styleDatabaseAboutToBeRemoved( const QString &path );
    void styleDatabaseAdded( const QString &path );
    void styleDatabaseRemoved( const QString &path );
 
    void setProjectStyle( QgsStyle *style );
    void projectStyleAboutToBeDestroyed();
    void projectStyleDestroyed();
    void projectStyleChanged();
 
  private:
    QgsProjectStyleSettings *mSettings = nullptr;
    bool mShowDefault = false;
    QPointer< QgsStyle > mProjectStyle;
};
 
class CORE_EXPORT QgsProjectStyleDatabaseProxyModel : public QSortFilterProxyModel
{
    Q_OBJECT
 
  public:
 
    enum class Filter
    {
      FilterHideReadOnly = 1 << 0, 
    };
    Q_ENUM( Filter )
    Q_DECLARE_FLAGS( Filters, Filter )
    Q_FLAG( Filters )
 
    
    QgsProjectStyleDatabaseProxyModel( QgsProjectStyleDatabaseModel *model, QObject *parent SIP_TRANSFERTHIS = nullptr );
 
    bool filterAcceptsRow( int sourceRow, const QModelIndex &sourceParent ) const override;
 
    QgsProjectStyleDatabaseProxyModel::Filters filters() const;
 
    void setFilters( QgsProjectStyleDatabaseProxyModel::Filters filters );
 
  private:
 
    QgsProjectStyleDatabaseProxyModel::Filters mFilters;
 
};
Q_DECLARE_OPERATORS_FOR_FLAGS( QgsProjectStyleDatabaseProxyModel::Filters )
 
 
#endif // QGSPROJECTSTYLESETTINGS_H