qgstextpreview.h

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/***************************************************************************
    qgstextpreview.h
    ----------------
    begin                : October 2016
    copyright            : (C) 2016 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 QGSTEXTPREVIEW_H
#define QGSTEXTPREVIEW_H

#include "qgstextrenderer.h"
#include "qgsrendercontext.h"

#include <QLabel>
#include "qgis_gui.h"

class GUI_EXPORT QgsTextPreview : public QLabel
{
    Q_OBJECT

    Q_PROPERTY( QgsTextFormat format READ format WRITE setFormat )
    Q_PROPERTY( double scale READ scale WRITE setScale )
    Q_PROPERTY( QgsUnitTypes::DistanceUnit mapUnits READ mapUnits WRITE setMapUnits )

  public:

    QgsTextPreview( QWidget *parent = nullptr );

    void paintEvent( QPaintEvent *e ) override;

    void setFormat( const QgsTextFormat &format );

    QgsTextFormat format() const { return mFormat; }

    void setScale( double scale );

    double scale() const { return mScale; }

    void setMapUnits( QgsUnitTypes::DistanceUnit unit );

    QgsUnitTypes::DistanceUnit mapUnits() const { return mMapUnits; }

  private:
    QgsTextFormat mFormat;
    QgsRenderContext mContext;
    double mScale = -1;
    QgsUnitTypes::DistanceUnit mMapUnits = QgsUnitTypes::DistanceMeters;
    void updateContext();
};

#endif // QGSTEXTPREVIEW_H