qgsstackeddiagramproperties.h

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/***************************************************************************
  qgsstackeddiagramproperties.h
  Properties for stacked diagram layers
  -------------------
         begin                : August 2024
         copyright            : (C) Germán Carrillo
         email                : german at opengis dot ch
 
 ***************************************************************************
 *                                                                         *
 *   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 QGSSTACKEDDIAGRAMPROPERTIES_H
#define QGSSTACKEDDIAGRAMPROPERTIES_H
 
// We don't want to expose this in the public API
#define SIP_NO_FILE
 
#include "ui_qgsstackeddiagrampropertiesbase.h"
 
#include "qgis_gui.h"
#include "qgsdiagramrenderer.h"
#include "qgsproxystyle.h"
 
#include <QDialog>
#include <QDialogButtonBox>
#include <QWidget>
 
class QgsVectorLayer;
class QgsMapCanvas;
class QgsDiagramProperties;
class QgsDiagramRenderer;
 

class GUI_EXPORT QgsStackedDiagramPropertiesModel : public QAbstractTableModel
{
    Q_OBJECT
 
  public:
    QgsStackedDiagramPropertiesModel( QObject *parent = nullptr );
 
    ~QgsStackedDiagramPropertiesModel() override;
 
    Qt::ItemFlags flags( const QModelIndex &index ) const override;
    QVariant data( const QModelIndex &index, int role = Qt::DisplayRole ) const override;
    QVariant headerData( int section, Qt::Orientation orientation, int role = Qt::DisplayRole ) const override;
    int rowCount( const QModelIndex & = QModelIndex() ) const override;
    int columnCount( const QModelIndex & = QModelIndex() ) const override;
 
    // editing support
    bool setData( const QModelIndex &index, const QVariant &value, int role = Qt::EditRole ) override;
    bool removeRows( int row, int count, const QModelIndex &parent = QModelIndex() ) override;
 
    // drag'n'drop support
    Qt::DropActions supportedDropActions() const override;
    QStringList mimeTypes() const override;
    QMimeData *mimeData( const QModelIndexList &indexes ) const override;
    bool dropMimeData( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent ) override;
 
    // new methods
    QgsDiagramRenderer *subDiagramForIndex( const QModelIndex &index ) const;

    void insertSubDiagram( const int index, QgsDiagramRenderer *newSubDiagram );
    void updateSubDiagram( const QModelIndex &index, QgsDiagramRenderer *dr );

    QList<QgsDiagramRenderer *> subRenderers() const;

    QgsDiagramLayerSettings diagramLayerSettings() const;

    void updateDiagramLayerSettings( QgsDiagramLayerSettings dls );
 
  signals:
    void subDiagramsMoved();
 
  protected:
    QList<QgsDiagramRenderer *> mRenderers;
    QgsDiagramLayerSettings mDiagramLayerSettings;
};

class QgsStackedDiagramsViewStyle : public QgsProxyStyle
{
    Q_OBJECT
 
  public:
    explicit QgsStackedDiagramsViewStyle( QWidget *parent );
 
    void drawPrimitive( PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr ) const override;
};

class GUI_EXPORT QgsStackedDiagramProperties : public QgsPanelWidget, private Ui::QgsStackedDiagramPropertiesBase
{
    Q_OBJECT
 
  public:
    explicit QgsStackedDiagramProperties( QgsVectorLayer *layer, QWidget *parent, QgsMapCanvas *canvas );

    void syncToLayer();
 
  signals:
    void auxiliaryFieldCreated();
 
  public slots:
    void apply();

    void clearCurrentIndex();
 
  private slots:

    void addSubDiagramRenderer();

    void appendSubDiagramRenderer( QgsDiagramRenderer *dr );

    void editSubDiagramRenderer();

    void editSubDiagramRenderer( const QModelIndex &index );

    void removeSubDiagramRenderer();
 
  private:
    QgsVectorLayer *mLayer = nullptr;
    QgsMapCanvas *mMapCanvas = nullptr;
 
    QgsStackedDiagramPropertiesModel *mModel = nullptr;

    bool couldBeFirstSubDiagram( const QModelIndex &index ) const;
 
  private slots:
    void subDiagramWidgetPanelAccepted( QgsPanelWidget *panel );
    void liveUpdateSubDiagramFromPanel();
};

class GUI_EXPORT QgsStackedDiagramPropertiesDialog : public QDialog
{
    Q_OBJECT
 
  public:
    QgsStackedDiagramPropertiesDialog( QgsVectorLayer *layer, QWidget *parent = nullptr, QgsMapCanvas *mapCanvas = nullptr );

    void syncToRenderer( const QgsDiagramRenderer *dr ) const;

    void syncToSettings( const QgsDiagramLayerSettings *dls ) const;

    QgsDiagramRenderer *renderer();

    QgsDiagramLayerSettings diagramLayerSettings() const;

    void setAllowedToEditDiagramLayerSettings( bool allowed ) const;

    bool isAllowedToEditDiagramLayerSettings() const;
 
  public slots:

    void accept() override;
 
  private slots:
    void showHelp();
 
  private:
    QgsDiagramProperties *mPropsWidget = nullptr;
    std::unique_ptr<QgsDiagramRenderer> mRenderer;
    QgsDiagramLayerSettings mDiagramLayerSettings;
    QDialogButtonBox *buttonBox = nullptr;
};
 
#endif // QGSSTACKEDDIAGRAMPROPERTIES_H