qgsstyle.h

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/***************************************************************************
    qgsstyle.h
    ---------------------
    begin                : November 2009
    copyright            : (C) 2009 by Martin Dobias
    email                : wonder dot sk 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 QGSSTYLE_H
#define QGSSTYLE_H
 
#include "qgis_core.h"
#include "qgis.h"
#include <QMap>
#include <QMultiMap>
#include <QString>
 
#include <sqlite3.h>
 
#include "qgssqliteutils.h"
#include "qgssymbollayerutils.h" // QgsStringMap
#include "qgstextformat.h"
#include "qgspallabeling.h"
#include "layertree/qgslegendpatchshape.h"
 
class QgsSymbol;
class QgsSymbolLayer;
class QgsColorRamp;
class QgsStyleEntityInterface;
 
class QDomDocument;
class QDomElement;
 
typedef QMap<QString, QgsColorRamp * > QgsVectorColorRampMap;
typedef QMap<int, QString> QgsSymbolGroupMap;
 
typedef QMap<QString, QgsTextFormat > QgsTextFormatMap;
 
typedef QMap<QString, QgsPalLayerSettings > QgsLabelSettingsMap;
 
/*
 * Constants used to describe copy-paste MIME types
 */
#define QGSCLIPBOARD_STYLE_MIME "application/qgis.style"
 
typedef QMultiMap<QString, QString> QgsSmartConditionMap;
 
// enumerators representing sqlite DB columns
 
enum SymbolTable
{
  SymbolId, 
  SymbolName, 
  SymbolXML, 
  SymbolFavoriteId, 
};
 
enum TagTable
{
  TagId, 
  TagName, 
};
 
enum TagmapTable
{
  TagmapTagId, 
  TagmapSymbolId, 
};
 
enum ColorrampTable
{
  ColorrampId, 
  ColorrampName, 
  ColorrampXML, 
  ColorrampFavoriteId, 
};
 
enum TextFormatTable
{
  TextFormatId, 
  TextFormatName, 
  TextFormatXML, 
  TextFormatFavoriteId, 
};
 
enum LabelSettingsTable
{
  LabelSettingsId, 
  LabelSettingsName, 
  LabelSettingsXML, 
  LabelSettingsFavoriteId, 
};
 
enum SmartgroupTable
{
  SmartgroupId, 
  SmartgroupName, 
  SmartgroupXML, 
};
 
class CORE_EXPORT QgsStyle : public QObject
{
    Q_OBJECT
 
  public:
 
    QgsStyle();
    ~QgsStyle() override;
 
    enum StyleEntity
    {
      SymbolEntity, 
      TagEntity, 
      ColorrampEntity, 
      SmartgroupEntity, 
      TextFormatEntity, 
      LabelSettingsEntity, 
      LegendPatchShapeEntity, 
    };
 
    bool addEntity( const QString &name, const QgsStyleEntityInterface *entity, bool update = false );
 
    bool addSymbol( const QString &name, QgsSymbol *symbol SIP_TRANSFER, bool update = false );
 
    bool addColorRamp( const QString &name, QgsColorRamp *colorRamp SIP_TRANSFER, bool update = false );
 
    bool addTextFormat( const QString &name, const QgsTextFormat &format, bool update = false );
 
    bool addLabelSettings( const QString &name, const QgsPalLayerSettings &settings, bool update = false );
 
    bool addLegendPatchShape( const QString &name, const QgsLegendPatchShape &shape, bool update = false );
 
    int addTag( const QString &tagName );
 
    int addSmartgroup( const QString &name, const QString &op, const QgsSmartConditionMap &conditions ) SIP_SKIP;
 
    int addSmartgroup( const QString &name, const QString &op, const QStringList &matchTag, const QStringList &noMatchTag,
                       const QStringList &matchName, const QStringList &noMatchName );
 
    QStringList tags() const;
 
    void clear();
 
    QgsColorRamp *colorRamp( const QString &name ) const SIP_FACTORY;
 
    int colorRampCount();
 
    QStringList colorRampNames() const;
 
    const QgsColorRamp *colorRampRef( const QString &name ) const;
 
    int colorrampId( const QString &name );
 
    QgsTextFormat textFormat( const QString &name ) const;
 
    int textFormatCount() const;
 
    QStringList textFormatNames() const;
 
    int textFormatId( const QString &name );
 
    QgsPalLayerSettings labelSettings( const QString &name ) const;
 
    QgsLegendPatchShape legendPatchShape( const QString &name ) const;
 
    int legendPatchShapesCount() const;
 
    QgsSymbol::SymbolType legendPatchShapeSymbolType( const QString &name ) const;
 
    QgsWkbTypes::GeometryType labelSettingsLayerType( const QString &name ) const;
 
    int labelSettingsCount() const;
 
    QStringList labelSettingsNames() const;
 
    int labelSettingsId( const QString &name );
 
    static QgsStyle *defaultStyle();
 
    static void cleanDefaultStyle() SIP_SKIP;
 
    bool tagSymbol( StyleEntity type, const QString &symbol, const QStringList &tags );
 
    bool detagSymbol( StyleEntity type, const QString &symbol, const QStringList &tags );
 
    bool detagSymbol( StyleEntity type, const QString &symbol );
 
    bool removeSymbol( const QString &name );
 
    bool renameEntity( StyleEntity type, const QString &oldName, const QString &newName );
 
    bool renameSymbol( const QString &oldName, const QString &newName );
 
    QgsSymbol *symbol( const QString &name ) SIP_FACTORY;
 
    const QgsSymbol *symbolRef( const QString &name ) const;
 
    int symbolCount();
 
    QStringList symbolNames() const;
 
    int symbolId( const QString &name );
 
    int entityId( StyleEntity type, const QString &name );
 
    int tagId( const QString &tag );
    int smartgroupId( const QString &smartgroup );
 
    QStringList allNames( StyleEntity type ) const;
 
    QStringList symbolsOfFavorite( StyleEntity type ) const;
 
    QStringList symbolsWithTag( StyleEntity type, int tagid ) const;
 
    bool addFavorite( StyleEntity type, const QString &name );
 
    bool removeFavorite( StyleEntity type, const QString &name );
 
    bool rename( StyleEntity type, int id, const QString &newName );
 
    bool remove( StyleEntity type, int id );
 
    bool removeEntityByName( StyleEntity type, const QString &name );
 
    bool saveSymbol( const QString &name, QgsSymbol *symbol, bool favorite, const QStringList &tags );
 
    bool saveColorRamp( const QString &name, QgsColorRamp *ramp, bool favorite, const QStringList &tags );
 
    bool removeColorRamp( const QString &name );
 
    bool renameColorRamp( const QString &oldName, const QString &newName );
 
    bool saveTextFormat( const QString &name, const QgsTextFormat &format, bool favorite, const QStringList &tags );
 
    bool removeTextFormat( const QString &name );
 
    bool renameTextFormat( const QString &oldName, const QString &newName );
 
    bool saveLabelSettings( const QString &name, const QgsPalLayerSettings &settings, bool favorite, const QStringList &tags );
 
    bool removeLabelSettings( const QString &name );
 
    bool renameLabelSettings( const QString &oldName, const QString &newName );
 
    bool saveLegendPatchShape( const QString &name, const QgsLegendPatchShape &shape, bool favorite, const QStringList &tags );
 
    bool renameLegendPatchShape( const QString &oldName, const QString &newName );
 
    QStringList legendPatchShapeNames() const;
 
    const QgsSymbol *previewSymbolForPatchShape( const QgsLegendPatchShape &shape ) const;
 
    QgsLegendPatchShape defaultPatch( QgsSymbol::SymbolType type, QSizeF size ) const;
 
    QList< QList< QPolygonF > > defaultPatchAsQPolygonF( QgsSymbol::SymbolType type, QSizeF size ) const;
 
    bool createDatabase( const QString &filename );
 
    bool createMemoryDatabase();
 
    void createTables();
 
    bool load( const QString &filename );
 
    bool save( QString filename = QString() );
 
    QString errorString() { return mErrorString; }
 
    QString fileName() { return mFileName; }
 
    QStringList findSymbols( StyleEntity type, const QString &qword );
 
    QStringList tagsOfSymbol( StyleEntity type, const QString &symbol );
 
    bool isFavorite( StyleEntity type, const QString &name );
 
    bool symbolHasTag( StyleEntity type, const QString &symbol, const QString &tag );
 
    QString tag( int id ) const;
 
    QgsSymbolGroupMap smartgroupsListMap();
 
    QStringList smartgroupNames() const;
 
    QgsSmartConditionMap smartgroup( int id );
 
    QString smartgroupOperator( int id );
 
    QStringList symbolsOfSmartgroup( StyleEntity type, int id );
 
    bool exportXml( const QString &filename );
 
    bool importXml( const QString &filename );
 
    static bool isXmlStyleFile( const QString &path );
 
  signals:
 
    void symbolSaved( const QString &name, QgsSymbol *symbol );
 
    void symbolChanged( const QString &name );
 
    void groupsModified();
 
    void entityTagsChanged( QgsStyle::StyleEntity entity, const QString &name, const QStringList &newTags );
 
    void favoritedChanged( QgsStyle::StyleEntity entity, const QString &name, bool isFavorite );
 
    void entityAdded( QgsStyle::StyleEntity entity, const QString &name );
 
    void entityRemoved( QgsStyle::StyleEntity entity, const QString &name );
 
    void entityRenamed( QgsStyle::StyleEntity entity, const QString &oldName, const QString &newName );
 
    void entityChanged( QgsStyle::StyleEntity entity, const QString &name );
 
    void symbolRemoved( const QString &name );
 
    void symbolRenamed( const QString &oldName, const QString &newName );
 
    void rampRenamed( const QString &oldName, const QString &newName );
 
    void rampAdded( const QString &name );
 
    void rampRemoved( const QString &name );
 
    void rampChanged( const QString &name );
 
 
    void textFormatRenamed( const QString &oldName, const QString &newName );
 
    void textFormatAdded( const QString &name );
 
    void textFormatRemoved( const QString &name );
 
    void textFormatChanged( const QString &name );
 
    void labelSettingsRenamed( const QString &oldName, const QString &newName );
 
    void labelSettingsAdded( const QString &name );
 
    void labelSettingsRemoved( const QString &name );
 
    void labelSettingsChanged( const QString &name );
 
  private:
 
    QgsSymbolMap mSymbols;
    QgsVectorColorRampMap mColorRamps;
    QgsTextFormatMap mTextFormats;
    QgsLabelSettingsMap mLabelSettings;
    QMap<QString, QgsLegendPatchShape > mLegendPatchShapes;
 
    QHash< QgsStyle::StyleEntity, QHash< QString, QStringList > > mCachedTags;
    QHash< QgsStyle::StyleEntity, QHash< QString, bool > > mCachedFavorites;
 
    QString mErrorString;
    QString mFileName;
 
    sqlite3_database_unique_ptr mCurrentDB;
 
    std::unique_ptr< QgsSymbol > mPatchMarkerSymbol;
    std::unique_ptr< QgsSymbol > mPatchLineSymbol;
    std::unique_ptr< QgsSymbol > mPatchFillSymbol;
 
    mutable QHash< QgsSymbol::SymbolType, QHash< QSizeF, QgsLegendPatchShape > > mDefaultPatchCache;
    mutable QHash< QgsSymbol::SymbolType, QHash< QSizeF, QList< QList< QPolygonF > > > > mDefaultPatchQPolygonFCache;
 
    static QgsStyle *sDefaultStyle;
 
    bool openDatabase( const QString &filename );
 
    bool importXml( const QString &filename, int sinceVersion );
 
    bool runEmptyQuery( const QString &query );
 
    int getId( const QString &table, const QString &name );
 
    QString getName( const QString &table, int id ) const;
 
    bool updateSymbol( StyleEntity type, const QString &name );
 
    void clearCachedTags( StyleEntity type, const QString &name );
 
 
    void upgradeIfRequired();
 
    static QString entityTableName( StyleEntity type );
 
    static QString tagmapTableName( StyleEntity type );
 
    static QString tagmapEntityIdFieldName( StyleEntity type );
 
    Q_DISABLE_COPY( QgsStyle )
};
 
class CORE_EXPORT QgsStyleEntityInterface
{
 
#ifdef SIP_RUN
    SIP_CONVERT_TO_SUBCLASS_CODE
    switch ( sipCpp->type() )
    {
      case QgsStyle::SymbolEntity:
        sipType = sipType_QgsStyleSymbolEntity;
        break;
 
      case QgsStyle::ColorrampEntity:
        sipType = sipType_QgsStyleColorRampEntity;
        break;
 
      case QgsStyle::TextFormatEntity:
        sipType = sipType_QgsStyleTextFormatEntity;
        break;
 
      case QgsStyle::LabelSettingsEntity:
        sipType = sipType_QgsStyleLabelSettingsEntity;
        break;
 
      case QgsStyle::SmartgroupEntity:
      case QgsStyle::TagEntity:
        sipType = 0;
        break;
    }
    SIP_END
#endif
 
  public:
 
    virtual ~QgsStyleEntityInterface() = default;
 
    virtual QgsStyle::StyleEntity type() const = 0;
 
};
 
class CORE_EXPORT QgsStyleSymbolEntity : public QgsStyleEntityInterface
{
  public:
 
    QgsStyleSymbolEntity( const QgsSymbol *symbol )
      : mSymbol( symbol )
    {}
 
    QgsStyle::StyleEntity type() const override;
 
    const QgsSymbol *symbol() const { return mSymbol; }
 
  private:
 
    const QgsSymbol *mSymbol = nullptr;
 
};
 
class CORE_EXPORT QgsStyleColorRampEntity : public QgsStyleEntityInterface
{
  public:
 
    QgsStyleColorRampEntity( const QgsColorRamp *ramp )
      : mRamp( ramp )
    {}
 
    QgsStyle::StyleEntity type() const override;
 
    const QgsColorRamp *ramp() const { return mRamp; }
 
  private:
 
    const QgsColorRamp *mRamp = nullptr;
};
 
class CORE_EXPORT QgsStyleTextFormatEntity : public QgsStyleEntityInterface
{
  public:
 
    QgsStyleTextFormatEntity( const QgsTextFormat &format )
      : mFormat( format )
    {}
 
    QgsStyle::StyleEntity type() const override;
 
    QgsTextFormat format() const { return mFormat; }
 
  private:
 
    QgsTextFormat mFormat;
 
};
 
class CORE_EXPORT QgsStyleLabelSettingsEntity : public QgsStyleEntityInterface
{
  public:
 
    QgsStyleLabelSettingsEntity( const QgsPalLayerSettings &settings )
      : mSettings( settings )
    {}
 
    QgsStyle::StyleEntity type() const override;
 
 
    const QgsPalLayerSettings &settings() const { return mSettings; }
 
  private:
 
    QgsPalLayerSettings mSettings;
};
 
class CORE_EXPORT QgsStyleLegendPatchShapeEntity : public QgsStyleEntityInterface
{
  public:
 
    QgsStyleLegendPatchShapeEntity( const QgsLegendPatchShape &shape )
      : mShape( shape )
    {}
 
    QgsStyle::StyleEntity type() const override;
 
 
    const QgsLegendPatchShape &shape() const { return mShape; }
 
  private:
 
    QgsLegendPatchShape mShape;
};
 
#endif