qgsextentbufferdialog.h

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/***************************************************************************
    qgsextentbufferdialog.h
    ---------------------
    begin                : December 2024
    copyright            : (C) 2024 by Juho Ervasti
    email                : juho dot ervasti at gispo dot fi
 ***************************************************************************
 *                                                                         *
 *   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 QGSEXTENTBUFFERDIALOG_H
#define QGSEXTENTBUFFERDIALOG_H
 
 
#include "ui_qgsextentbufferdialogbase.h"
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgssymbol.h"
#include "qgssymbolwidgetcontext.h"
 
#include <QDialog>
 
#define SIP_NO_FILE
 
class QgsVectorLayer;

class GUI_EXPORT QgsExtentBufferWidget : public QgsPanelWidget, public QgsExpressionContextGenerator, private Ui::QgsExtentBufferDialogBase
{
    Q_OBJECT
  public:
    QgsExtentBufferWidget( QgsSymbol *symbol, QgsVectorLayer *layer, QWidget *parent SIP_TRANSFERTHIS = nullptr );

    double extentBuffer() const;

    QgsProperty dataDefinedProperty() const;

    void setContext( const QgsSymbolWidgetContext &context );

    QgsSymbolWidgetContext context() const;

    Qgis::RenderUnit sizeUnit() const;
 
  private:
    QgsSymbol *mSymbol = nullptr;
    QgsVectorLayer *mLayer = nullptr;
    QgsSymbolWidgetContext mContext;
 
    QgsExpressionContext createExpressionContext() const override;

    void registerDataDefinedButton( QgsPropertyOverrideButton *button, QgsSymbol::Property key );
};

class GUI_EXPORT QgsExtentBufferDialog : public QDialog
{
    Q_OBJECT
  public:
    QgsExtentBufferDialog( QgsSymbol *symbol, QgsVectorLayer *layer, QWidget *parent SIP_TRANSFERTHIS = nullptr );

    double extentBuffer() const;

    Qgis::RenderUnit sizeUnit() const;

    QgsProperty dataDefinedProperty() const;

    QgsExtentBufferWidget *widget() const;

    void setContext( const QgsSymbolWidgetContext &context );
 
  private:
    QgsExtentBufferWidget *mWidget;
 
  private slots:
 
    void showHelp();
};
 
#endif // QGSEXTENTBUFFERDIALOG_H